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<SEC-DOCUMENT>0000950129-01-001592.txt : 20010326
<SEC-HEADER>0000950129-01-001592.hdr.sgml : 20010326
ACCESSION NUMBER:		0000950129-01-001592
CONFORMED SUBMISSION TYPE:	10-K
PUBLIC DOCUMENT COUNT:		14
CONFORMED PERIOD OF REPORT:	20001231
FILED AS OF DATE:		20010323

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			APACHE CORP
		CENTRAL INDEX KEY:			0000006769
		STANDARD INDUSTRIAL CLASSIFICATION:	CRUDE PETROLEUM & NATURAL GAS [1311]
		IRS NUMBER:				410747868
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		10-K
		SEC ACT:		
		SEC FILE NUMBER:	001-04300
		FILM NUMBER:		1576997

	BUSINESS ADDRESS:	
		STREET 1:		2000 POST OAK BLVD
		STREET 2:		ONE POST OAK CENTER STE 100
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77056-4400
		BUSINESS PHONE:		7132966000

	MAIL ADDRESS:	
		STREET 1:		2000 POST OAK BLVD
		STREET 2:		STE 100
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77056-4400

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	APACHE OIL CORP
		DATE OF NAME CHANGE:	19660830
</SEC-HEADER>
<DOCUMENT>
<TYPE>10-K
<SEQUENCE>1
<FILENAME>h84997e10-k.txt
<DESCRIPTION>APACHE CORPORATION - 12/31/2000
<TEXT>

<PAGE>   1

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- --------------------------------------------------------------------------------

                UNITED STATES SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM 10-K

(MARK ONE)
[X]               ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

                  FOR THE FISCAL YEAR ENDED DECEMBER 31, 2000,

                                       OR

[ ]             TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934

                FOR THE TRANSITION PERIOD FROM        TO

                         COMMISSION FILE NUMBER 1-4300

                               APACHE CORPORATION

<TABLE>
<S>                                              <C>
             A DELAWARE CORPORATION                        IRS EMPLOYER NO. 41-0747868
</TABLE>

                              ONE POST OAK CENTRAL
                       2000 POST OAK BOULEVARD, SUITE 100
                           HOUSTON, TEXAS 77056-4400
                        TELEPHONE NUMBER (713) 296-6000

          Securities Registered Pursuant to Section 12(b) of the Act:

<TABLE>
<CAPTION>
                                                              NAME OF EACH EXCHANGE
              TITLE OF EACH CLASS                              ON WHICH REGISTERED
              -------------------                             ---------------------
<S>                                              <C>
         Common Stock, $1.25 par Value                       New York Stock Exchange
                                                              Chicago Stock Exchange
        Preferred Stock Purchase Rights                      New York Stock Exchange
                                                              Chicago Stock Exchange
  Automatically Convertible Equity Securities                New York Stock Exchange
      Conversion Preferred Stock, Series C                    Chicago Stock Exchange
              9.25% Notes due 2002                           New York Stock Exchange
       Apache Finance Canada Corporation                     New York Stock Exchange
              7.75% Notes Due 2029
        Irrevocably and Unconditionally
        Guaranteed by Apache Corporation
</TABLE>

        Securities Registered Pursuant to Section 12(g) of the Act: NONE

     Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days.  Yes [X]  No [ ]

     Indicate by check mark if disclosure of delinquent filers pursuant to Item
405 of Regulation S-K is not contained herein, and will not be contained, to the
best of registrant's knowledge, in definitive proxy or information statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K.  [ ]

<TABLE>
<S>                                                           <C>
Aggregate market value of the voting stock held by
  non-affiliates of registrant as of February 28, 2001......  $7,262,751,772
Number of shares of registrant's common stock outstanding as
  of February 28, 2001......................................     123,726,606
</TABLE>

                      DOCUMENTS INCORPORATED BY REFERENCE:

     Portions of registrant's proxy statement relating to registrant's 2001
annual meeting of stockholders have been incorporated by reference into Part III
hereof.

- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>   2

                               TABLE OF CONTENTS

                                  DESCRIPTION

<TABLE>
<CAPTION>
ITEM                                                                   PAGE
- ----                                                                   ----
<C>      <S>                                                           <C>
                                  PART I

 1.      BUSINESS....................................................    1
 2.      PROPERTIES..................................................   11
 3.      LEGAL PROCEEDINGS...........................................   15
 4.      SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.........   15

                                  PART II

 5.      MARKET FOR THE REGISTRANT'S COMMON EQUITY AND RELATED
         STOCKHOLDER MATTERS.........................................   15
 6.      SELECTED FINANCIAL DATA.....................................   17
 7.      MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION
         AND RESULTS OF OPERATIONS...................................   18
7A.      QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET
         RISK........................................................   27
 8.      FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA.................   29
 9.      CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING
         AND FINANCIAL DISCLOSURE....................................   29

                                 PART III

10.      DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT..........   29
11.      EXECUTIVE COMPENSATION......................................   29
12.      SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND
         MANAGEMENT..................................................   29
13.      CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS..............   29

                                  PART IV

14.      EXHIBITS, FINANCIAL STATEMENT SCHEDULES, AND REPORTS ON
         FORM 8-K....................................................   30
</TABLE>

     All defined terms under Rule 4-10(a) of Regulation S-X shall have their
statutorily prescribed meanings when used in this report. Quantities of natural
gas are expressed in this report in terms of thousand cubic feet (Mcf), million
cubic feet (MMcf) or billion cubic feet (Bcf). Oil is quantified in terms of
barrels (bbls); thousands of barrels (Mbbls) and millions of barrels (MMbbls).
Natural gas is compared to oil in terms of barrels of oil equivalent (boe) or
million barrels of oil equivalent (MMboe). Oil and natural gas liquids are
compared with natural gas in terms of million cubic feet equivalent (MMcfe) and
billion cubic feet equivalent (Bcfe). One barrel of oil is the energy equivalent
of six Mcf of natural gas. Daily oil and gas production is expressed in terms of
barrels of oil per day (b/d) and thousands or millions of cubic feet of gas per
day (Mcf/d and MMcf/d, respectively) or millions of British thermal units per
day (MMBtu/d). Gas sales volumes may be expressed in terms of one million
British thermal units (MMBtu), which is approximately, equal to one Mcf. With
respect to information relating to the Company's working interest in wells or
acreage, "net" oil and gas wells or acreage is determined by multiplying gross
wells or acreage by the Company's working interest therein. Unless otherwise
specified, all references to wells and acres are gross.
<PAGE>   3

                                     PART I

ITEM 1. BUSINESS

GENERAL

     Apache Corporation (Apache or the Company), a Delaware corporation formed
in 1954, is an independent energy company that explores for, develops and
produces natural gas, crude oil and natural gas liquids. In North America,
Apache's exploration and production interests are focused on the Gulf of Mexico,
the Anadarko Basin, the Permian Basin, the Gulf Coast and the Western
Sedimentary Basin of Canada. Outside of North America, Apache has exploration
and production interests offshore Western Australia and in Egypt, and
exploration interests in Poland and offshore The People's Republic of China
(China). Apache common stock, par value $1.25 per share, has been listed on the
New York Stock Exchange since 1969, and on the Chicago Stock Exchange since
1960.

     Apache holds interests in many of its U.S., Canadian and international
properties through operating subsidiaries, such as Apache Canada Ltd., DEK
Energy Company (DEKALB, formerly known as DEKALB Energy Company), Apache Energy
Limited (formerly known as Hadson Energy Limited), Apache International, Inc.,
and Apache Overseas, Inc. Properties referred to in this document may be held by
those subsidiaries. Apache treats all operations as one line of business.

2000 RESULTS

     Apache had its best year ever in 2000 with record income attributable to
common stock of $693.1 million, or $5.87 per share, on total revenues of $2.3
billion. Net cash provided by operating activities during 2000 was $1.5 billion,
a 140 percent increase from 1999. Both historically high commodity prices and
record production contributed to the outstanding results.

     Apache reported its 23rd consecutive year of production growth (up 27
percent) and 13th consecutive year of oil and gas reserves growth (up 35
percent) in 2000. Apache's average daily production was 121.8 Mbbls of oil and
natural gas liquids and 831 MMcf of natural gas for the year. Giving effect to
2000 production, acquisitions, dispositions, revisions and drilling activity,
the Company's estimated proved reserves increased by 279.2 MMboe in 2000 over
the prior year to 1,086.4 MMboe, of which approximately 52 percent was natural
gas. Based on 807.2 MMboe of proved reserves reported at year-end 1999, Apache's
reserve additions (including revisions) during the year reflect replacement of
396 percent of the Company's 2000 production. Apache's drilling and
production-enhancement program yielded 455 new producing wells out of 590
attempts and involved 950 major North American workover and recompletion
projects during the year.

     At December 31, 2000, Apache held interests in approximately 6,371 net oil
and gas wells and 3,101,812 net developed acres of oil and gas properties
worldwide. In addition, the Company had 1,007,685 net undeveloped acres under
North American leases and 17,203,835 net undeveloped acres under international
exploration and production rights.

APACHE'S GROWTH STRATEGY

     Apache's growth strategy is to increase oil and gas reserves, production,
cash flow and earnings through a combination of exploratory drilling,
development of its inventory of existing projects, and property acquisitions
meeting defined financial parameters. Apache prefers to operate its properties
so that it can best influence their development, as a result, we operate
properties accounting for over 80 percent of our production.

     For our existing assets, Apache seeks to maximize value by increasing
production and reserves while reducing operating costs. Achieving these
objectives requires rigorous pursuit of production enhancement opportunities and
moderate risk drilling, while divesting marginal and non-strategic properties
and pursuing other activities to reduce costs. In acquiring new assets, Apache
tries to obtain appropriate prices by generally avoiding auctions where the
Company would have to compete against other buyers. Our aim is to follow each
acquisition with a cycle of reserve enhancement, property consolidation and cash
flow acceleration, facilitating asset growth and debt reduction.

                                        1
<PAGE>   4

     Apache's international exploration activities are an emerging component of
our long-term growth strategy. Apache seeks to concentrate our exploratory
investments in a select number of international areas and to become the dominant
operator in those regions. Apache believes that these investments, although
higher-risk, offer potential for significant reserve additions, and complement
our North American operations, which are more development oriented.

2000 ACQUISITIONS AND DISPOSITIONS

     On January 24, 2000, Apache completed the acquisition of producing
properties in Western Oklahoma and the Texas Panhandle, formerly owned by a
subsidiary of Repsol YPF (Repsol), for approximately $118.7 million, plus
assumed liabilities of approximately $29.8 million. The acquisition included
estimated proved reserves of approximately 28.7 MMboe as of the acquisition
date.

     On June 30, 2000, Apache completed the acquisition of long-lived producing
properties in the Permian Basin and South Texas from Collins & Ware, Inc.
(Collins & Ware) for approximately $320.7 million. The acquisition included
estimated proved reserves of approximately 83.7 MMboe as of the acquisition
date. One-third of the reserves are liquid hydrocarbons.

     On August 17, 2000, Apache completed the acquisition of a Delaware limited
liability company owned by subsidiaries of Occidental Petroleum Corporation
(Occidental) and the related natural gas production for approximately $321.2
million, plus future payments of approximately $44.0 million over four years.
The Occidental properties are located in 32 fields on 93 blocks on the Outer
Continental Shelf of the Gulf of Mexico. The acquisition included estimated
proved reserves of approximately 53.1 MMboe as of the acquisition date.

     On December 29, 2000, Apache completed the acquisition of Canadian
properties from Canadian affiliates of Phillips Petroleum Company (Phillips) for
approximately $490.3 million. The acquisition included estimated proved reserves
of approximately 70.0 MMboe as of the acquisition date. The properties comprise
approximately 212,000 net developed acres and 275,000 net undeveloped acres, 786
square miles of 3-D seismic and 4,155 miles of 2-D seismic located in the Zama
area of Northwest Alberta. The assets also include three sour gas plants with
total throughput capacity of 150 MMcf per day, 13 compressor stations and 150
miles of owned and operated gas gathering lines.

     In 2000, the Company also completed tactical regional acquisitions for cash
consideration totaling $104.0 million. These acquisitions added approximately
18.3 MMboe to the Company's proved reserves.

     During 2000, Apache sold proprietary rights to certain Canadian seismic
data and non-strategic oil and gas properties, collecting cash of $26.3 million.

EXPLORATION AND PRODUCTION

     The Company's North American exploration and production activities are
diversified among four operating regions: Offshore, Midcontinent, Southern and
Canada. Approximately 80 percent of the Company's proved reserves are located in
these North American regions. Egypt and Australia are the Company's most
important international regions. The Company's Egyptian operations are
headquartered in Cairo, and Apache conducts its Australian exploration and
production operations from Perth. Information concerning the amount of revenue,
operating income (loss) and total assets attributable to U.S., Canadian and
international operations is set forth in Note 12 to the Company's consolidated
financial statements under Item 8 below.

     Offshore.  The Offshore region comprises the Company's interests in the
Gulf of Mexico, offshore Louisiana and Texas. In 2000, the Offshore region was
Apache's leading region for production and production revenues contributing
approximately $771 million in revenues from production of 28.5 MMboe for the
year. The Company performed 188 workover and recompletion operations during 2000
in the offshore region and participated in drilling 35 wells, 22 of which were
completed as producers. As of December 31, 2000, the region encompassed 600,546
net acres, and accounted for 190.2 MMboe, or 18 percent, of the Company's
year-end 2000 total estimated proved reserves.

                                        2
<PAGE>   5

     Midcontinent.  Apache's Midcontinent region operates in Oklahoma, eastern
and northern Texas, Arkansas and northern Louisiana. The region has focused
operations on its sizable position in the Anadarko Basin of western Oklahoma.
Apache has drilled and operated in the Anadarko Basin for over four decades,
developing an extensive database of geologic information and a substantial
acreage position. In 2000, the Midcontinent region produced approximately 12.1
MMboe, generating $292 million in revenue for the Company.

     At December 31, 2000, Apache held an interest in 697,892 net acres in the
region, which accounted for approximately 125.8 MMboe, or 12 percent, of
Apache's total estimated proved reserves. Apache participated in drilling 210
wells in the Midcontinent region during the year, 164 of which were completed as
producing wells. The Company performed 68 workover and recompletion operations
in the region during 2000.

     Southern.  The Southern region includes assets in the Permian Basin of
western Texas and New Mexico, the San Juan Basin of New Mexico, central Texas,
and the Texas and Louisiana coasts. In 2000, the Southern region produced
approximately 15.5 MMboe and generated $409 million in production revenue. At
December 31, 2000, the Company held 758,746 net acres in the region, which
accounted for 320.1 MMboe, or 29 percent, of the Company's total estimated
proved reserves. Apache participated in drilling 149 wells in the Southern
region, 139 of which were productive wells. Apache performed 490 workovers and
recompletions in the Southern region during the year.

     Canada.  Exploration and development activity in the Canadian region is
concentrated in the Provinces of Alberta and British Columbia. The region
produced approximately 13.8 MMboe and generated $332 million in production
revenue in 2000. Apache participated in drilling 114 wells in this region during
the year, 87 of which were completed as producers. The Company performed 204
workovers and recompletions on operated wells during 2000. At December 31, 2000,
the region encompassed approximately 1,113,031 net acres, and accounted for
228.7 MMboe, or 21 percent, of the Company's year-end 2000 total estimated
proved reserves.

     In February 2001, certain subsidiaries of the Company and Murphy Oil
Corporation (Murphy) filed a lawsuit in Canada charging Predator Corporation
(Predator) and others with misappropriation and misuse of confidential well data
to obtain acreage offsetting a significant natural gas discovery in northeast
British Columbia. The lawsuit charges that a wireline service company working
for Apache and Murphy compromised itself by passing on to Predator highly
confidential information on a large natural gas discovery Apache and Murphy made
last year in the Ladyfern area of British Columbia, and that Predator personnel
and their agents trespassed on the discovery well site to obtain additional
confidential well data. Predator has filed a counterclaim seeking more than CN$6
billion. Apache believes that the counterclaim is without merit and that the
amount claimed by Predator is frivolous.

     Egypt.  At year end, Apache held 11,222,914 net acres in Egypt with 68.2
MMboe of estimated proved reserves or six percent of Apache's total estimated
proved reserves. In 2000, Apache had 13.0 MMboe of production in Egypt, which
generated $361 million in production revenues. Apache owns a 75 percent interest
in the Qarun Block and a 40 percent interest in the Khalda Block, both located
in the Western Desert of Egypt. Production of gas from Khalda is delivered for
sale to the Egyptian General Petroleum Corporation (EGPC) at a point west of
Alexandria, Egypt, via a 34-inch gas pipeline. Additional gas will be delivered
via a southern line expected to be completed by mid-year 2001. The costs of
building the pipeline were borne by Apache, the other Khalda participants and
the owners of a neighboring block, and are recoverable from oil and gas
production from the Khalda Block.

     In addition to the Qarun and Khalda Blocks, Apache holds interests in the
East Beni Suef and Asyout Blocks to the south of the Qarun Block, and three
other blocks in the Western Desert of Egypt, the North East Abu Gharadig Block,
the East Bahariya Block, and the West Mediterranean Block No. 1 (partly onshore
and partly offshore). Apache is also acquiring interests in the Matruh
Development lease from Shell, which is not currently producing. In late 1999,
Apache acquired from Amoco Egypt 100 percent of the working interest in the
WD-19 area in the Western Desert. Apache drilled additional wells and has tied
them into adjoining Qarun facilities.

                                        3
<PAGE>   6

     Both the Khalda and Qarun Concession Agreements provide that Apache and its
partners in the concessions will pay all of the operating and capital costs for
developing the concessions, while the production will be split between EGPC and
the partners. Up to 40 percent of the oil and gas produced from each of the
concessions is available to the Company and its partners to recover operating
and capital costs for the applicable concession. To the extent eligible costs
exceed 40 percent of the oil and gas produced and sold from a concession in any
given quarter, such excess costs may be carried into future quarters without
limit. The remaining 60 percent of all oil and gas produced from the concessions
is divided between EGPC and Apache and its partners, with the percentage
received by Apache and its partners being reduced as the gross daily average of
oil and gas produced on a quarterly basis increases. Under the Khalda Agreement,
capital costs are amortized over four years, while the Qarun agreement provides
for five-year amortization.

     After year-end 2000, Apache agreed to acquire all of Repsol's interest in
the Khalda Block (50 percent), the Ras Kanayes Block (32 percent), the Ras El
Hekma Block (50 percent), the North East Abu Gharadig Block (24 percent) and the
portion of the West Mediterranean Block onshore and offshore up to 100 meters
water depth (33 percent). Included in the transaction is Repsol's 50 percent
interest in the Umbarka Development lease, a mature producing area, and 100
percent interest in the South Umbarka Block which also produces oil and gas.
Apache will become operator of all these areas except North East Abu Gharadig.

     The terms of the concessions are similar, except for Umbarka, which
provides for payment of a tax and royalty totaling together 50 percent of
Apache's net profits from that area, and does not involve the traditional
"sharing" of production.

     Australia.  Western Australia became an important region for Apache after
the 1993 acquisition of Hadson Energy Resources Corporation. In 2000, natural
gas production in the region increased by 42 percent from the prior year to
approximately 108 MMcf/d. Apache acts as operator for most of its Western
Australian properties through its wholly-owned subsidiary, Apache Energy Limited
(AEL). During 2000, Apache had 12.3 MMboe of production generating $223.5
million of production revenue. Estimated proven reserves in Australia increased
by two percent to 153.5 MMboe, or 14 percent of the Company's year-end total
estimated proven reserves. The increase reflects additions to oil and gas
reserves in the Harriet Joint Venture. As of December 31, 2000, Apache held
259,240 net developed acres and 1,765,630 net undeveloped acres offshore Western
Australia. Through AEL and its subsidiaries, Apache also operates the Varanus
Island gas hub, with a throughput capacity of 240 MMcf/d, and two 60-mile
(12-inch and 16-inch) pipelines from Varanus Island to connections with the
Dampier to Bunbury and Goldfields Gas Transmission pipelines. See "Oil and
Natural Gas Marketing."

     Other International Operations.  Outside of Canada, Egypt and Australia,
Apache currently has exploration interests in Poland and offshore China.

     Apache obtained its first acreage position in Poland in 1997, when the
Company assumed operatorship and a 50 percent interest in over 5.5 million gross
acres in Poland from FX Energy, Inc. (FX Energy). The Company has 4,891,228 net
undeveloped acres in Poland as of December 31, 2000. A 1999 well, known as the
Wilga-2 well, tested at a combined rate of 16.9 MMcf of gas and 570 barrels of
condensate per day, and a well drilling at yearend, the Tuchola 108-2 well of
the Pomeranian Concession, has also tested at 9.5 MMcf per day. The Wilga-2 well
is located on Block 255 of the Vistula Concession in the Lublin basin. Apache's
operations in Poland are headquartered in Warsaw.

     Apache is also the operator, with a 24.5 percent interest, of the Zhao Dong
Block in Bohai Bay, offshore China. In 1994 and 1995, discovery wells tested at
rates between 1,300 and 4,000 b/d of oil. In early 1997, one well tested at
rates up to 11,571 b/d of oil and another tested at rates up to 15,359 b/d. An
overall development plan for the C and D Fields in the Zhao Dong Block was
approved by Chinese authorities in December 2000, and work is expected to
commence in 2001.

     In June 2000, our subsidiary, Apache China Corporation LDC (Apache China),
filed a lawsuit against PetroChina Company Limited (PetroChina), China National
Petroleum Corporation and China National Oil and Gas Exploration and Development
Corporation in connection with certain of our Chinese operations in the Zhao
Dong Block of the Bohai Bay in China. The Company filed seeking damages and
injunctive relief to

                                        4
<PAGE>   7

prevent the Chinese parties from declaring that Apache and XCL-China had
relinquished some of our Chinese exploratory acreage, and other claims. The
lawsuit was filed in the U.S. Bankruptcy Court in Opelousas, Louisiana, in
connection with bankruptcy proceedings of XCL-China, Ltd., a co-owner in the
Zhao Dong Block. On June 30, 2000, Apache and PetroChina announced having
reached agreement to resolve the outstanding issues associated with development
of the Zhao Dong Block. The agreement called for PetroChina and the China
National Petroleum Corporation to obtain various governmental approvals
including approval of the overall development plan. By the middle of February
2001, all of the agreed actions had occurred, including all of the required
governmental approvals, and Apache China's lawsuit was dismissed with prejudice.
Apache and the other participants in the Zhao Dong Block are preparing to begin
the construction of production facilities and development drilling in accordance
with the approved overall development plan.

OIL AND NATURAL GAS MARKETING

     On October 27, 1995, wholly owned affiliates of each of Apache, Oryx Energy
Company and Parker & Parsley Petroleum Company (Parker & Parsley) formed
Producers Energy Marketing LLC (ProEnergy), a Delaware limited liability
company. ProEnergy became fully operational on April 1, 1996, and marketed
substantially all of its members' domestic natural gas pursuant to member gas
purchase agreements having an initial term of 10 years, subject to early
termination following specified events. The price of gas purchased by ProEnergy
from its members was based upon agreed to published indexes. Effective January
1, 1998, Parker & Parsley withdrew from ProEnergy. In June 1998, Apache sold its
interest in ProEnergy to Cinergy Corp. (Cinergy) and formed a strategic alliance
with Cinergy to market substantially all the Company's natural gas production
from North America. ProEnergy, renamed Cinergy Marketing & Trading, LLC in June
1999, will continue to market Apache's North American natural gas production for
10 years, with an option to terminate after six years, under an amended and
restated gas purchase agreement effective July 1, 1998. During this period,
Apache is generally obligated to deliver most of its North American gas
production to Cinergy and, under certain circumstances, may have to make
payments to Cinergy if certain gas throughput thresholds are not met.

     Separate from its arrangements with Cinergy, Apache is also delivering
natural gas under several long-term supply agreements with terms greater than
one year.

     Apache assumed its own U.S. crude oil marketing operations in 1992. Most of
Apache's U.S. crude oil production is sold through lease-level marketing to
refiners, traders and transporters, generally less than 30 day contracts that
renew automatically until canceled. Oil produced from Canadian properties is
sold to crude oil purchasers or refiners at market prices, which depend on
worldwide crude prices adjusted for transportation and crude quality. Natural
gas produced from Canadian properties is sold to major aggregators of natural
gas, gas marketers and direct users under long-term and short-term contracts.
The oil and gas contracts provide for sales at specified prices, or at prices
that are subject to change due to market conditions.

     The Company diversifies the markets for its Canadian gas production not
presently committed to Cinergy by selling directly or indirectly to customers
through aggregators and brokers in the United States and Canada. Apache
transports natural gas via the Company's firm transportation contracts to
California (12 MMcf/d) and to the Province of Ontario, Canada (four MMcf/d)
through end-users' firm transportation contracts. Pursuant to an agreement
entered into in 1994, the Company is also selling five MMcf/d of natural gas to
the Hermiston Cogeneration Project, located in the Pacific Northwest of the
United States. In 1996, the Company entered into an agreement with Westcoast Gas
Services, Inc. for the sale of 5,000 MMBtu/d for delivery in the United States
for a 10-year term.

     In Australia, the Company entered into two gas sales contracts during 2000,
bringing its total to 20 contracts. Spot sales continued to two buyers and
short-term additional quantities were agreed with another buyer. In total, AEL
committed a further 21.4 Bcf for delivery over the next six to eight years.
Apache's total Australian delivery rates are expected to average 116 MMcf/d in
2001, excluding spot sales.

     In Egypt, oil from the Qarun Block is delivered by pipeline to tanks at the
Dashour pumping station northeast of the Qarun Block or by truck to the Tebbin
refinery south of Alexandria, Egypt. At the discretion
                                        5
<PAGE>   8

of the operator of the pipelines, oil from the Qarun Block is put into the two
42-inch diameter SUMED pipelines, which transport significant quantities of
Egyptian and other crude oil from the Gulf of Suez to Sidi Kherir, west of
Alexandria, Egypt, on the Mediterranean Coast. All Qarun and Khalda crude oil is
currently sold to EGPC. In 1996, the Company and its partners in the Khalda
Block entered into a take or pay contract with EGPC, which obligates EGPC to pay
for 75 percent of 200 MMcf/d of future production of gas from the Khalda Block.
Sales of gas under the contract began in 1999 upon completion of a gas pipeline
from the Khalda Block. In late 1997, the same sellers entered into a supplement
to the contract with EGPC to sell an additional 50 MMcf/d through a southern gas
line being constructed by the Company and its partners in the Khalda Block to a
point near the Qarun Block to tie into an existing gas pipeline. This southern
line is expected to complete tie-in by mid-year 2001. The Repsol transaction
referred to above will transfer operatorship of the Khalda gas processing plants
and the Southern gas line to Apache.

OIL AND NATURAL GAS PRICES

     Natural gas prices during 2000 experienced a strong upward trend with
Apache's realized prices ranging from $2.37 per Mcf in January to $5.60 per Mcf
in December. Fluctuations are largely due to market perceptions about natural
gas supply and demand. Apache's average realized gas price of $3.59 per Mcf for
2000 was up 66 percent from the prior-year average of $2.16 per Mcf, and its
1999 average realized natural gas price was 12 percent higher than the 1998
average price of $1.93 per Mcf.

     As a result of minimum price contracts which escalate at an average of 80
percent of the Australian consumer price index, AEL's natural gas production in
Western Australia is not subject to price volatility as is Apache's U.S. and
Canadian gas production; however, natural gas sales under such Australian
minimum price contracts represented less than five percent of the Company's
total natural gas sales for 2000. Total Australian gas sales in 2000, including
long-term contracts and spot sales, averaged $1.34 per Mcf, 11 percent lower
than the 1999 average of $1.51. The decline from 1999 was primarily due to a
lower currency exchange rate.

     In Egypt, all oil production from the East Beni Suef, Khalda, West
Mediterranean, WD-19 and Qarun Blocks is currently sold to EGPC on a spot basis
at a "Western Desert" price, which is applied to virtually all production from
the area and is announced periodically by EGPC. In 2000, the average price was
$27.81 per barrel. Gas sales from the Khalda Block commenced in 1999 based on a
contract price that is equivalent to 85 percent of the price of Suez Blend crude
oil, FOB Mediterranean.

     The price for certain quantities of gas sold and produced in Egypt was
reduced in 2000 to a price based on crude oil with a maximum of $2.65 per Mcf,
following discussions and agreements between EGPC and certain other producers.
These latest agreements do not impact any of Apache's existing gas sales
contracts; however, any new gas sales contracts may be impacted.

     Oil prices remained subject to unpredictable political and economic forces
during 2000 and experienced fluctuations similar to those seen in natural gas
prices for the year, and also showed a significant upward trend. Apache believes
that oil prices will continue to fluctuate in response to changes in the
policies of the Organization of Petroleum Exporting Countries (OPEC), worldwide
demand, events in the Middle East and other factors associated with the world
political and economic environment. As a result of the many uncertainties
associated with levels of production maintained by OPEC and other oil producing
countries, the availability of worldwide energy supplies, and the competitive
relationships and consumer perceptions of various energy sources, the Company is
unable to predict what changes will occur in crude oil and natural gas prices.

     In 2000, Apache's realized worldwide crude oil price ranged from $22.56 per
barrel in April to $32.54 per barrel in September. The average crude oil price
of $27.37 per barrel in 2000 was up 48 percent from the average price of $18.45
per barrel in 1999, and was 116 percent higher than the average price of $12.70
per barrel in 1998. The Company's average crude oil price for its Australian
production was $29.99 per barrel in 2000, 52 percent more than the average price
in 1999.

                                        6
<PAGE>   9

     From time to time, Apache buys or sells contracts to hedge a limited
portion of its future oil and gas production against exposure to spot market
price changes. See Note 9 to the Company's consolidated financial statements
under Item 8 below.

     The Company's business has been and will continue to be affected by future
worldwide changes in oil and gas prices and the relationship between the prices
of oil and gas. No assurance can be given as to the trend in, or level of,
future oil and gas prices.

WRITE-DOWNS UNDER THE FULL COST CEILING TEST RULES

     Under the full cost accounting rules of the Securities and Exchange
Commission (SEC), the Company reviews the carrying value of its proved oil and
gas properties each quarter on a country-by-country basis. Under these rules,
capitalized costs of proved oil and gas properties, net of accumulated
depreciation, depletion and amortization, and deferred income taxes, may not
exceed the present value of estimated future net cash flows from proved oil and
gas reserves, discounted at 10 percent, plus the lower of cost or fair value of
unproved properties included in the costs being amortized, net of related tax
effects. These rules generally require pricing future oil and gas production at
the unescalated oil and gas prices in effect at the end of each fiscal quarter
and require a write-down if the "ceiling" is exceeded, even if prices declined
for only a short period of time. The Company had no write-downs due to ceiling
test limitations in 2000. Given the volatility of oil and gas prices, it is
reasonably possible that the Company's estimate of discounted future net cash
flows from proved oil and gas reserves could change in the near term. If oil and
gas prices decline significantly in the future, even if only for a short period
of time, it is possible that write-downs of oil and gas properties could occur.
Write-downs required by these rules do not impact cash flow from operating
activities.

VOLATILE PRICES CAN MATERIALLY AFFECT THE COMPANY

     The Company continually analyzes forecasts and updates its estimates of
energy prices for its internal use in planning, budgeting, and estimating and
valuing reserves. The Company's future financial condition and results of
operations will depend upon the prices received for the Company's oil and
natural gas production and the costs of acquiring, finding, developing and
producing reserves. Prices for oil and natural gas are subject to fluctuations
in response to relatively minor changes in supply, market uncertainty and a
variety of additional factors that are beyond the control of the Company. These
factors include worldwide political instability (especially in the Middle East
and other oil-producing regions), the foreign supply of oil and gas, the price
of foreign imports, the level of drilling activity, the level of consumer
product demand, government regulations and taxes, the price and availability of
alternative fuels and the overall economic environment. A substantial or
extended decline in oil and gas prices would have a material adverse effect on
the Company's financial position, results of operations, quantities of oil and
gas that may be economically produced, and access to capital. Oil and natural
gas prices have historically been and are likely to continue to be volatile.
This volatility makes it difficult to estimate with precision the value of
producing properties in acquisitions and to budget and project the return on
exploration and development projects involving the Company's oil and gas
properties. In addition, unusually volatile prices often disrupt the market for
oil and gas properties, as buyers and sellers have more difficulty agreeing on
the purchase price of properties.

UNCERTAINTY IN CALCULATING RESERVES; RATES OF PRODUCTION; DEVELOPMENT
EXPENDITURES; CASH FLOWS

     There are numerous uncertainties inherent in estimating quantities of oil
and natural gas reserves of any category and in projecting future rates of
production and timing of development expenditures, which underlie the reserve
estimates, including many factors beyond the Company's control. Reserve data
represent only estimates. In addition, the estimates of future net cash flows
from the Company's proved reserves and their present value are based upon
various assumptions about future production levels, prices and costs that may
prove to be incorrect over time. Any significant variance from the assumptions
could result in the actual quantity of the Company's reserves and future net
cash flows from them being materially different from the estimates. In addition,
the Company's estimated reserves may be subject to downward or upward revision
based upon production history, results of future exploration and development,
prevailing oil and gas prices, operating and development costs and other
factors.
                                        7
<PAGE>   10

ACQUISITION OR DISCOVERIES OF ADDITIONAL RESERVES IS NEEDED TO AVOID A MATERIAL
DECLINE IN RESERVES AND PRODUCTION

     The rate of production from oil and gas properties generally declines as
reserves are depleted. Except to the extent that the Company acquires additional
properties containing proved reserves, conducts successful exploration and
development activities or, through engineering studies, identifies additional
behind-pipe zones or secondary recovery reserves, the Company's proved reserves
will decline materially as reserves are produced. Future oil and gas production
is, therefore, highly dependent upon the Company's level of success in acquiring
or finding additional reserves.

SUBSTANTIAL COSTS INCURRED TO CONFORM TO GOVERNMENT REGULATION OF THE OIL AND
GAS INDUSTRY

     The Company's exploration, production and marketing operations are
regulated extensively at the federal, state and local levels, as well as by
other countries in which the Company does business. The Company has made and
will continue to make large expenditures in its efforts to comply with the
requirements of environmental and other regulations. Further, the oil and gas
regulatory environment could change in ways that might substantially increase
these costs. Hydrocarbon-producing states regulate conservation practices and
the protection of correlative rights. These regulations affect the Company's
operations and limit the quantity of hydrocarbons the Company may produce and
sell. In addition, at the U.S. federal level, the Federal Energy Regulatory
Commission regulates interstate transportation of natural gas under the Natural
Gas Act. Other regulated matters include marketing, pricing, transportation and
valuation of royalty payments.

SUBSTANTIAL COSTS INCURRED RELATED TO ENVIRONMENTAL MATTERS

     The Company, as an owner or lessee and operator of oil and gas properties,
is subject to various federal, provincial, state, local and foreign country laws
and regulations relating to discharge of materials into, and protection of, the
environment. These laws and regulations may, among other things, impose
liability on the lessee under an oil and gas lease for the cost of pollution
clean-up resulting from operations, subject the lessee to liability for
pollution damages, and require suspension or cessation of operations in affected
areas.

     The Company maintains insurance coverage, which it believes is customary in
the industry, although it is not fully insured against all environmental risks.
The Company is not aware of any environmental claims existing as of December 31,
2000, which would have a material impact upon the Company's financial position
or results of operations.

     The Company has made and will continue to make expenditures in its efforts
to comply with these requirements, which it believes are necessary business
costs in the oil and gas industry. The Company has established policies for
continuing compliance with environmental laws and regulations, including
regulations applicable to its operations in Canada, Australia and other
countries. Apache also has established operational procedures and training
programs designed to minimize the environmental impact of its field facilities.
The costs incurred by these policies and procedures are inextricably connected
to normal operating expenses such that the Company is unable to separate the
expenses related to environmental matters; however, the Company does not believe
any such additional expenses are material to its financial position or results
of operations.

     Although environmental requirements have a substantial impact upon the
energy industry, generally these requirements do not appear to affect Apache any
differently, or to any greater or lesser extent, than other companies in the
industry. The Company does not believe that compliance with federal, state,
local or foreign country provisions regulating the discharge of materials into
the environment, or otherwise relating to the protection of the environment,
will have a material adverse effect upon the capital expenditures, earnings or
competitive position of the Company or its subsidiaries; however, there is no
assurance that changes in or additions to laws or regulations regarding the
protection of the environment will not have such an impact.

                                        8
<PAGE>   11

COMPETITION WITH OTHER COMPANIES COULD HARM THE COMPANY

     The oil and gas industry is highly competitive. The Company's business
could be harmed by competition with other companies. Because oil and gas are
fungible commodities, the Company's principal form of competition is price
competition. The Company strives to maintain the lowest finding and production
costs possible to maximize profits. In addition, as an independent oil and gas
company, Apache frequently competes for reserve acquisitions, exploration
leases, licenses, concessions and marketing agreements against companies with
financial and other resources substantially larger than the Company possesses.
Many of the Company's competitors have established strategic long-term positions
and maintain strong governmental relationships in countries in which the Company
may seek new entry.

INSURANCE DOES NOT COVER ALL RISKS

     Exploration for and production of oil and natural gas can be hazardous,
involving unforeseen occurrences such as blowouts, cratering, fires and loss of
well control, which can result in damage to or destruction of wells or
production facilities, injury to persons, loss of life, or damage to property or
the environment. The Company maintains insurance against certain losses or
liabilities arising from its operations in accordance with customary industry
practices and in amounts that management believes to be prudent; however,
insurance is not available to the Company against all operational risks.

HEDGING MAY PREVENT THE COMPANY FROM FULLY BENEFITING FROM PRICE INCREASES

     To the extent that the Company engages in hedging activities, that protect
against price deterioration, it may be prevented from realizing the benefits of
price increases above the levels of the hedges. In addition, the Company is
subject to basis risk when it engages in hedging transactions, particularly
where transportation constraints restrict the Company's ability to deliver oil
and gas volumes at the delivery point to which the hedging transaction is
indexed.

RISKS ARISING FROM THE FAILURE TO FULLY IDENTIFY POTENTIAL PROBLEMS RELATED TO
ACQUIRED RESERVES OR TO PROPERLY ESTIMATE THOSE RESERVES

     The Company from time to time acquires oil and gas properties. Although the
Company performs a review of the acquired properties that it believes is
consistent with industry practices, such reviews are inherently incomplete. It
generally is not feasible to review in depth every individual property involved
in each acquisition. Ordinarily the Company will focus its review efforts on the
higher-value properties and will sample the remainder. However, even a detailed
review of records and properties may not necessarily reveal existing or
potential problems, nor will it permit a buyer to become sufficiently familiar
with the properties to assess fully their deficiencies and potential.
Inspections may not always be performed on every well, and environmental
problems, such as ground water contamination, are not necessarily observable
even when an inspection is undertaken. Even when problems are identified, the
Company often assumes certain environmental and other risks and liabilities in
connection with acquired properties. There are numerous uncertainties inherent
in estimating quantities of proved oil and gas reserves and actual future
production rates and associated costs with respect to acquired properties, and
actual results may vary substantially from those assumed in the estimates (see
above). In addition, there can be no assurance that acquisitions will not have
an adverse effect upon the Company's operating results, particularly during the
periods in which the operations of acquired businesses are being integrated into
the Company's ongoing operations.

GENERAL ECONOMIC CONDITIONS

     Virtually all of the Company's operations are subject to the risks and
uncertainties of adverse changes in general economic conditions (domestically,
in specific regions of the United States and Canada, and internationally), the
outcome of pending and/or potential legal or regulatory proceedings, changes in
environmental, tax, labor and other laws and regulations to which the Company is
subject, and the condition of the capital markets utilized by the Company to
finance its operations.

                                        9
<PAGE>   12

RISKS OF NON-U.S. OPERATIONS

     The Company's non-U.S. oil and natural gas exploration, development and
production activities are subject to political and economic uncertainties,
including, among others, changes, sometimes frequent or marked, in governmental
energy policies or the personnel administering them; expropriation of property;
cancellation or modification of contract rights; foreign exchange restrictions;
currency fluctuations; risks of loss due to civil strife, acts of war, guerrilla
activities and insurrection; royalty and tax increases; and other risks arising
out of foreign governmental sovereignty over the areas in which the Company's
operations are conducted. These risks may be higher in the developing countries
in which the Company conducts its exploration, development and production
activities. Consequently, the Company's non-U.S. exploration, development and
production activities may be substantially affected by factors beyond the
Company's control, any of which could materially adversely affect the Company's
financial position or results of operations. Furthermore, in the event of a
dispute arising from non-U.S. operations, the Company may be subject to the
exclusive jurisdiction of courts outside the United States or may not be
successful in subjecting non-U.S. persons to the jurisdiction of the courts in
the United States, which could adversely affect the outcome of the dispute.

EFFECT OF CHANGES IN FOREIGN EXCHANGE RATES ON THE COMPANY'S CASH FLOW

     The Company's cash flow stream relating to certain international operations
is based on the U.S. dollar equivalent of cash flows measured in foreign
currencies. Australian gas production is sold under fixed-price Australian
dollar contracts and over half the costs incurred are paid in Australian
dollars. Revenue and disbursement transactions denominated in Australian dollars
are converted to U.S. dollar equivalents based on the exchange rate as of the
transaction date. Reported cash flow relating to Canadian operations is based on
cash flows measured in Canadian dollars converted to the U.S. dollar equivalent
based on the average of the Canadian and U.S. dollar exchange rates for the
period reported. Substantially all of the Company's international transactions,
outside of Canada and Australia, are denominated in U.S. dollars. The Company's
Polish and Australian subsidiaries have net financial assets that are
denominated in a currency other than the functional reporting currency of the
subsidiaries. The Company considers its current risk exposure to exchange rate
movements, based on net cash flows, to be immaterial.

EMPLOYEES

     On December 31, 2000, Apache had 1,546 employees.

OFFICES

     Apache's principal executive offices are located at One Post Oak Central,
2000 Post Oak Boulevard, Suite 100, Houston, Texas 77056-4400. At year-end 2000,
the Company maintained regional exploration and/or production offices in Tulsa,
Oklahoma; Houston, Texas; Calgary, Alberta; Cairo, Egypt; Perth, Western
Australia; Beijing, China; and Warsaw, Poland.

                                        10
<PAGE>   13

ITEM 2. PROPERTIES

OIL AND GAS EXPLORATION AND PRODUCTION PROPERTIES AND RESERVES

  Acreage

     The undeveloped and developed acreage including both domestic leases and
international production and exploration rights that Apache held as of December
31, 2000, are as follows:

<TABLE>
<CAPTION>
                                           UNDEVELOPED ACREAGE         DEVELOPED ACREAGE
                                         ------------------------   -----------------------
                                         GROSS ACRES   NET ACRES    GROSS ACRES   NET ACRES
                                         -----------   ----------   -----------   ---------
<S>                                      <C>           <C>          <C>           <C>
OFFSHORE
Alabama................................          --            --       10,919          546
Louisiana..............................     184,540       125,473      622,568      323,120
Texas..................................      45,403        24,320      263,199      127,087
                                         ----------    ----------    ---------    ---------
          Total........................     229,943       149,793      896,686      450,753
                                         ----------    ----------    ---------    ---------
MIDCONTINENT
Arkansas...............................         738           290        4,351        3,230
Kansas.................................         240            90           40           40
Louisiana..............................       8,363         5,923       41,599       28,360
Michigan...............................       3,181         2,712           --           --
Oklahoma...............................     194,402        61,339      764,082      332,794
Pennsylvania...........................          --            --          796           38
Texas..................................      85,658        41,915      614,908      221,161
                                         ----------    ----------    ---------    ---------
          Total........................     292,582       112,269    1,425,776      585,623
                                         ----------    ----------    ---------    ---------
SOUTHERN
Alaska.................................      14,262            --           --           --
Colorado...............................      13,333        11,908       10,979       10,715
Illinois...............................         140            56           --           --
Louisiana..............................      71,424        67,763       78,012       60,856
New Mexico.............................      86,392        48,337      118,087       56,969
Texas..................................     171,560        84,889      670,114      398,708
Wyoming................................      25,319        18,532           40           13
                                         ----------    ----------    ---------    ---------
          Total........................     382,430       231,485      877,232      527,261
                                         ----------    ----------    ---------    ---------
          Total United States..........     904,955       493,547    3,199,694    1,563,637
                                         ----------    ----------    ---------    ---------
INTERNATIONAL
Australia..............................   3,219,730     1,765,630      445,050      259,240
Canada.................................     780,587       514,138      794,735      598,893
China..................................       5,314         2,657        5,911        1,448
Egypt..................................  20,835,291    10,544,320    1,011,055      678,594
Poland.................................   9,782,456     4,891,228           --           --
                                         ----------    ----------    ---------    ---------
          Total International..........  34,623,378    17,717,973    2,256,751    1,538,175
                                         ----------    ----------    ---------    ---------
          Total Company................  35,528,333    18,211,520    5,456,445    3,101,812
                                         ==========    ==========    =========    =========
</TABLE>

                                        11
<PAGE>   14

  Productive Oil and Gas Wells

     The number of productive oil and gas wells, operated and non-operated, in
which Apache had an interest as of December 31, 2000, is set forth below:

<TABLE>
<CAPTION>
                                                              GAS             OIL
                                                         -------------   -------------
                                                         GROSS    NET    GROSS    NET
                                                         -----   -----   -----   -----
<S>                                                      <C>     <C>     <C>     <C>
Offshore...............................................    354     184     490     314
Midcontinent...........................................  2,743   1,188     653     229
Southern...............................................  1,018     601   6,182   2,321
Canada.................................................    871     665   1,094     769
Australia..............................................      6       4      19      10
Egypt..................................................     21       8     160      78
                                                         -----   -----   -----   -----
          Total........................................  5,013   2,650   8,598   3,721
                                                         =====   =====   =====   =====
</TABLE>

  Gross Wells Drilled

     The following table sets forth the number of gross exploratory and gross
development wells drilled in which the Company participated during the last
three fiscal years. The number of wells drilled refers to the number of wells
commenced at any time during the respective fiscal year. "Productive" wells are
either producing wells or wells capable of commercial production. At December
31, 2000, the Company was participating in 75 wells in the U.S., 13 Canadian
wells, four Egyptian wells, two Australian wells and two Polish wells in the
process of drilling.

<TABLE>
<CAPTION>
                                                  EXPLORATORY               DEVELOPMENTAL
                                            ------------------------   ------------------------
                                            PRODUCTIVE   DRY   TOTAL   PRODUCTIVE   DRY   TOTAL
                                            ----------   ---   -----   ----------   ---   -----
<S>                                         <C>          <C>   <C>     <C>          <C>   <C>
2000
United States.............................      11       15      26       314       54     368
Canada....................................       3       11      14        84       16     100
Australia.................................      10       10      20        21        3      24
Egypt.....................................       2       24      26        10       --      10
Other International.......................      --        2       2        --       --      --
                                                --       --     ---       ---       --     ---
          Total...........................      26       62      88       429       73     502
                                                ==       ==     ===       ===       ==     ===
1999
United States.............................      11       13      24        97        9     106
Canada....................................       2        3       5        30       14      44
Australia.................................       2       12      14         5        1       6
Egypt.....................................       3        2       5        38        3      41
Other International.......................      --        5       5         2       --       2
                                                --       --     ---       ---       --     ---
          Total...........................      18       35      53       172       27     199
                                                ==       ==     ===       ===       ==     ===
1998
United States.............................      20       16      36       163       34     197
Canada....................................      17       12      29        30        7      37
Australia.................................       7        8      15        --       --      --
Egypt.....................................      11       24      35        27        5      32
Other International.......................      --        1       1         1       --       1
                                                --       --     ---       ---       --     ---
          Total...........................      55       61     116       221       46     267
                                                ==       ==     ===       ===       ==     ===
</TABLE>

                                        12
<PAGE>   15

  Net Wells Drilled

     The following table sets forth, for each of the last three fiscal years,
the number of net exploratory and net developmental wells drilled by Apache:

<TABLE>
<CAPTION>
                                                EXPLORATORY                DEVELOPMENTAL
                                         -------------------------   -------------------------
                                         PRODUCTIVE   DRY    TOTAL   PRODUCTIVE   DRY    TOTAL
                                         ----------   ----   -----   ----------   ----   -----
<S>                                      <C>          <C>    <C>     <C>          <C>    <C>
2000
United States..........................      5.8       9.1   14.9      201.0      41.6   242.6
Canada.................................      1.0       7.0    8.0       58.7      11.7    70.4
Australia..............................      5.0       5.8   10.8        9.7       1.6    11.3
Egypt..................................      1.4      13.7   15.1        4.3        --     4.3
Other International....................       --        .9     .9         --        --      --
                                            ----      ----   ----      -----      ----   -----
          Total........................     13.2      36.5   49.7      273.7      54.9   328.6
                                            ====      ====   ====      =====      ====   =====
1999
United States..........................      4.1       8.2   12.3       59.1       4.8    63.9
Canada.................................      1.3       2.3    3.6       26.2      12.1    38.3
Australia..............................      2.0       5.4    7.4        2.6        .2     2.8
Egypt..................................      1.6       1.2    2.8       15.6       1.2    16.8
Other International....................       --       1.6    1.6         .5        --      .5
                                            ----      ----   ----      -----      ----   -----
          Total........................      9.0      18.7   27.7      104.0      18.3   122.3
                                            ====      ====   ====      =====      ====   =====
1998
United States..........................      9.9      11.1   21.0       64.0      18.8    82.8
Canada.................................     16.2      11.0   27.2       28.3       6.1    34.4
Australia..............................      3.5       3.4    6.9         --        --      --
Egypt..................................      5.6      13.5   19.1       11.9       2.8    14.7
Other International....................       --        .2     .2         .2        --      .2
                                            ----      ----   ----      -----      ----   -----
          Total........................     35.2      39.2   74.4      104.4      27.7   132.1
                                            ====      ====   ====      =====      ====   =====
</TABLE>

  Production and Pricing Data

     The following table describes, for each of the last three fiscal years,
oil, natural gas liquids (NGL) and gas production for the Company, average
production costs (excluding severance taxes) and average sales prices.

<TABLE>
<CAPTION>
                                  PRODUCTION                                  AVERAGE SALES PRICE
                          ---------------------------     AVERAGE      ---------------------------------
                            OIL       NGL       GAS      PRODUCTION       OIL         NGL         GAS
YEAR ENDED DECEMBER 31,   (MBBLS)   (MBBLS)   (MMCF)    COST PER BOE   (PER BBL)   (PER BBL)   (PER MCF)
- -----------------------   -------   -------   -------   ------------   ---------   ---------   ---------
<S>                       <C>       <C>       <C>       <C>            <C>         <C>         <C>
2000....................  41,920     2,648    303,980      $2.68        $27.37      $19.19       $3.59
1999....................  33,223     1,437    239,484       2.56         18.45        9.42        2.16
1998....................  26,611     1,052    215,389       2.87         12.70        7.94        1.93
</TABLE>

  Estimated Reserves and Reserve Value Information

     The following information relating to estimated reserve quantities, reserve
values and discounted future net revenues is derived from, and qualified in its
entirety by reference to, the more complete reserve and revenue information and
assumptions included in the Company's Supplemental Oil and Gas Disclosures under
Item 8 below. The Company's estimates of proved reserve quantities of its U.S.,
Canadian and international properties have been subject to review by Ryder Scott
Company, L.P., Petroleum Consultants. There are numerous uncertainties inherent
in estimating quantities of proved reserves and projecting future rates of
production and timing of development expenditures. The following reserve
information represents estimates only and should not be construed as being
exact.

                                        13
<PAGE>   16

     The following table sets forth the Company's estimated proved developed and
undeveloped reserves as of December 31, 2000, 1999 and 1998:

<TABLE>
<CAPTION>
                                                                         OIL, NGL
                                                              NATURAL      AND
                                                                GAS     CONDENSATE
                                                               (BCF)     (MMBBLS)
                                                              -------   ----------
<S>                                                           <C>       <C>
2000
Developed...................................................  2,664.8     354.0
Undeveloped.................................................    718.9     168.5
                                                              -------     -----
          Total.............................................  3,383.7     522.5
                                                              =======     =====
1999
Developed...................................................  1,873.7     302.0
Undeveloped.................................................    477.9     113.2
                                                              -------     -----
          Total.............................................  2,351.6     415.2
                                                              =======     =====
1998
Developed...................................................  1,450.1     178.0
Undeveloped.................................................    722.1      73.0
                                                              -------     -----
          Total.............................................  2,172.2     251.0
                                                              =======     =====
</TABLE>

     The following table sets forth the estimated future net cash flows of all
the Company's proved reserves, and proved developed reserves, as of December 31,
2000, 1999 and 1998. Future cash inflows are based on year-end prices except in
those instances where the sale of gas and oil is covered by physical contract
terms providing for higher or lower amounts. Operating costs, production and ad
valorem taxes, and future development costs are based on current costs with no
escalations.

<TABLE>
<CAPTION>
                                                               PRESENT VALUE OF ESTIMATED
                                                                  FUTURE NET CASH FLOWS
                                       ESTIMATED FUTURE            BEFORE INCOME TAXES
                                        NET CASH FLOWS         (DISCOUNTED AT 10 PERCENT)
                                   -------------------------   ---------------------------
                                                   PROVED                        PROVED
DECEMBER 31,                         PROVED       DEVELOPED       PROVED       DEVELOPED
- ------------                       -----------   -----------   ------------   ------------
                                                       (IN THOUSANDS)
<S>                                <C>           <C>           <C>            <C>
2000.............................  $31,238,877   $24,740,047   $17,725,205    $14,285,437
1999.............................   10,392,116     8,638,015     6,068,013      4,890,340
1998.............................    3,994,612     2,793,698     2,395,888      1,764,887
</TABLE>

     At December 31, 2000, estimated future net cash flows related to the
Company's proved reserves and proved developed reserves were as follows:

<TABLE>
<CAPTION>
                                                                             PROVED
DECEMBER 31,                                                   PROVED       DEVELOPED
- ------------                                                 -----------   -----------
                                                                  (IN THOUSANDS)
<S>                                                          <C>           <C>
2001.......................................................  $ 3,330,103   $ 3,288,889
2002.......................................................    3,271,279     2,863,843
2003.......................................................    3,041,370     2,308,585
Thereafter.................................................   21,596,125    16,278,730
                                                             -----------   -----------
          Total............................................  $31,238,877   $24,740,047
                                                             ===========   ===========
</TABLE>

     The Company believes that no major discovery or other favorable or adverse
event has occurred since December 31, 2000, which would cause a significant
change in the estimated proved reserves reported herein. The estimates above are
based on year-end pricing in accordance with the SEC guidelines and do not
reflect current prices. Since January 1, 2001, no oil or gas reserve information
has been filed with, or included in any report to, any U.S. authority or agency
other than the SEC and the Energy Information Administration

                                        14
<PAGE>   17

(EIA). The basis of reporting reserves to the EIA for the Company's reserves is
identical to that set forth in the foregoing table.

  Title to Interests

     The Company believes that its title to the various interests set forth
above is satisfactory and consistent with the standards generally accepted in
the oil and gas industry, subject only to immaterial exceptions which do not
detract substantially from the value of the interests or materially interfere
with their use in the Company's operations. The interests owned by the Company
may be subject to one or more royalty, overriding royalty and other outstanding
interests customary in the industry. The interests may additionally be subject
to obligations or duties under applicable laws, ordinances, rules, regulations
and orders of arbitral or governmental authorities. In addition, the interests
may be subject to burdens such as net profits interests, liens incident to
operating agreements and current taxes, development obligations under oil and
gas leases and other encumbrances, easements and restrictions, none of which
detract substantially from the value of the interests or materially interfere
with their use in the Company's operations.

ITEM 3. LEGAL PROCEEDINGS

     The information set forth under the caption "Litigation" in Note 10 to the
Company's financial statements under Item 8 below is incorporated herein by
reference.

ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

     No matters were submitted for a vote of security holders during the fourth
quarter of 2000.

                                    PART II

ITEM 5. MARKET FOR THE REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER
MATTERS

     Apache's common stock, par value $1.25 per share, is traded on the New York
Stock Exchange and the Chicago Stock Exchange under the symbol APA. The table
below provides certain information regarding Apache common stock for 2000 and
1999. Prices shown are from the New York Stock Exchange Composite Transactions
Reporting System.

<TABLE>
<CAPTION>
                                           2000                                      1999
                           ------------------------------------      ------------------------------------
                                                DIVIDENDS PER                             DIVIDENDS PER
                             PRICE RANGE           SHARE(1)            PRICE RANGE            SHARE
                           ----------------    ----------------      ----------------    ----------------
                            HIGH      LOW      DECLARED    PAID       HIGH      LOW      DECLARED   PAID
                           ------    ------    --------    ----      ------    ------    --------   ----
<S>                       <C>        <C>         <C>       <C>      <C>        <C>         <C>      <C>
First Quarter............ $51 1/2    $32 1/8     $.07      $.07     $28 9/16   $17 5/8     $.07     $.07
Second Quarter...........  61 1/2     44           --       .07      39 7/8     25 1/16     .07      .07
Third Quarter............  67 11/16   46 3/8      .14        --      49 15/16   37          .07      .07
Fourth Quarter...........  74 3/16    51 1/2       --       .14      44         30          .07      .07
</TABLE>

     The closing price per share of Apache common stock, as reported on the New
York Stock Exchange Composite Transactions Reporting System for February 28,
2001, was $58.70. At December 31, 2000, there were 123,634,748 shares of Apache
common stock outstanding held by approximately 10,000 shareholders of record and
62,000 beneficial owners.

- ---------------

(1) The Company paid dividends of $.28 per share in 2000, of which $.21 was
    declared in 2000 and $.07 was declared in the fourth quarter of 1999, as a
    result of changing its dividend payment schedule from a quarterly basis to
    an annual basis.
                                        15
<PAGE>   18

     The Company has paid cash dividends on its common stock for 34 consecutive
years through December 31, 2000, and expects to continue the payment of
dividends at current levels. During 2000, the Company implemented a change in
the payment schedule for dividends on its common stock from a quarterly basis to
an annual basis. When, and if, declared by the Company's board of directors,
future dividend payments will depend upon the Company's level of earnings,
financial requirements and other relevant factors.

     In December 1995, the Company declared a dividend of one right (a Right)
for each share of Apache common stock outstanding on January 31, 1996. Each
Right entitles the registered holder to purchase from the Company one
ten-thousandth (1/10,000) of a share of Series A Preferred Stock at a price of
$100 per one ten-thousandth of a share, subject to adjustment. The Rights are
exercisable 10 calendar days following a public announcement that certain
persons or groups have acquired 20 percent or more of the outstanding shares of
Apache common stock or 10 business days following commencement of an offer for
30 percent or more of the outstanding shares of Apache common stock. In
addition, if a person or group becomes the beneficial owner of 20 percent or
more of Apache's outstanding common stock (flip in event), each Right will
become exercisable for shares of Apache's common stock at 50 percent of the then
market price of the common stock. If a 20 percent shareholder of Apache acquires
Apache, by merger or otherwise, in a transaction where Apache does not survive
or in which Apache's common stock is changed or exchanged (flip over event), the
Rights become exercisable for shares of the common stock of the company
acquiring Apache at 50 percent of the then market price for Apache common stock.
Any Rights that are or were beneficially owned by a person who has acquired 20
percent or more of the outstanding shares of Apache common stock and who engages
in certain transactions or realizes the benefits of certain transactions with
the Company will become void. The Company may redeem the Rights at $.01 per
Right at any time until 10 business days after public announcement of a flip in
event. The Rights will expire on January 31, 2006, unless earlier redeemed by
the Company. Unless the Rights have been previously redeemed, all shares of
Apache common stock issued by the Company after January 31, 1996 will include
Rights. Unless and until the Rights become exercisable, they will be transferred
with and only with the shares of Apache common stock.

     In August 1998, the Company issued 100,000 shares of 5.68 percent Series B
Cumulative Preferred Stock (the Series B Preferred Stock) in the form of one
million depositary shares, each representing one-tenth (1/10) of a share of
Series B Preferred Stock. Neither the shares of Series B Preferred Stock nor the
depositary shares are traded on any stock exchange. The shares of Series B
Preferred Stock are not convertible into common equity. Holders of the
depositary shares are entitled to receive cumulative cash dividends at an annual
rate of $5.68 per depositary share when, and if, declared by the Company's board
of directors.

     In May 1999, the Company issued 140,000 shares of 6.5 percent Automatically
Convertible Equity Securities, Conversion Preferred Stock, Series C (Series C
Preferred Stock) in the form of seven million depositary shares each
representing 1/50th of a share of Series C Preferred Stock. The depositary
shares are traded on the New York Stock Exchange and the Chicago Stock Exchange.
The Series C Preferred Stock is not subject to a sinking fund or mandatory
redemption. On May 15, 2002, each depositary share will automatically convert,
subject to adjustments, into not more than one share and not less than 0.8197 of
a share of the Company's common stock, depending on the market price of the
common stock at that time. In 2000, Apache bought back 75,900 depository shares
at an average price of $34.42 per share. The excess of the purchase price to
reacquire the depository shares over the original issuance price is reflected as
a preferred stock dividend in the accompanying statement of consolidated
operations. At any time prior to May 15, 2002, holders of the depositary shares
may elect to convert each of their shares, subject to adjustments, into not less
than 0.8197 of a share of the Company's common stock (5,675,685 common shares).
Holders of the depositary shares are entitled to receive cumulative cash
dividends at an annual rate of $2.015 per depositary share when, and if,
declared by the Company's board of directors.

     On August 2, 2000, the Company completed the public offering of 9.2 million
shares of Apache common stock, including 1.2 million shares for the
underwriters' over-allotment option, for net proceeds of approximately $433.9
million. The proceeds were used to fund a portion of the acquisitions made
during 2000 and repay indebtedness under Apache's commercial paper program.

                                        16
<PAGE>   19

ITEM 6. SELECTED FINANCIAL DATA

     The following table sets forth selected financial data of the Company and
its consolidated subsidiaries for each of the years in the five-year period
ended December 31, 2000, which information has been derived from the Company's
audited financial statements. This information should be read in connection
with, and is qualified in its entirety by, the more detailed information in the
Company's financial statements under Item 8 below.

<TABLE>
<CAPTION>
                                                   AS OF OR FOR THE YEAR ENDED DECEMBER 31,
                                        --------------------------------------------------------------
                                         2000(1)      1999(2)      1998(3)      1997(4)      1996(5)
                                        ----------   ----------   ----------   ----------   ----------
                                                   (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
<S>                                     <C>          <C>          <C>          <C>          <C>
INCOME STATEMENT DATA
Total revenues........................  $2,283,904   $1,146,553   $  760,470   $  980,979   $  836,968
Net income (loss).....................     713,056      200,855     (129,387)     154,896      121,427
Income (loss) attributable to common
  stock...............................     693,068      186,406     (131,391)     154,896      121,427
Net income (loss) per common share:
  Basic...............................        5.87         1.73        (1.34)        1.71         1.42
  Diluted.............................        5.67         1.72        (1.34)        1.65         1.38
Cash dividends per common share(6)....         .28          .28          .28          .28          .28

BALANCE SHEET DATA
Working capital (deficit).............  $   76,673   $    6,290   $  (78,804)  $    4,546   $  (41,501)
Total assets..........................   7,481,950    5,502,543    3,996,062    4,138,633    3,432,430
Long-term debt........................   2,193,258    1,879,650    1,343,258    1,501,380    1,235,706
Shareholders' equity..................   3,754,640    2,669,427    1,801,833    1,729,177    1,518,516
Common shares outstanding at end of
  year................................     123,635      113,996       97,769       93,305       90,059
</TABLE>

     For a discussion of significant acquisitions, reference is made to Item 7,
"Management's Discussion and Analysis of Financial Condition and Results of
Operations" and to Note 2 to the Company's consolidated financial statements
under Item 8 below.

- ---------------

(1) Includes the results of the acquisitions of certain oil and gas properties
    from Repsol, Collins & Ware, Occidental and Phillips after January 24, 2000,
    June 30, 2000, August 17, 2000 and December 29, 2000, respectively.

(2) Includes the results of the acquisitions of certain oil and gas properties
    from Petsec Energy Inc. (Petsec), Shell Offshore Inc. and affiliated Shell
    entities (Shell Offshore), British-Borneo Oil & Gas Plc (British-Borneo) and
    Shell Canada Limited (Shell Canada) after February 1, 1999, May 18, 1999,
    June 18, 1999 and November 30, 1999, respectively.

(3) Includes the results of the acquisitions of certain subsidiaries and oil and
    gas properties from Novus Petroleum Limited (Novus) after December 18, 1998.
    Also includes a $243.2 million pre-tax ($158.1 million net of tax) non-cash
    write-down of the carrying value of the Company's U.S. proved oil and gas
    properties due to ceiling test limitations.

(4) Includes financial data after November 20, 1997, relating to the acquisition
    from Mobil Exploration & Producing Australia Pty Ltd (Mobil) of three
    companies owning interests in certain oil and gas properties and production
    facilities offshore Western Australia (the Ampolex Group Transaction).

(5) Includes financial data after May 20, 1996, for Apache PHN Company, Inc.
    (Phoenix, formerly known as The Phoenix Resource Companies, Inc.).

(6) The Company paid dividends of $.28 per share in 2000, of which $.21 was
    declared in 2000 and $.07 was declared in the fourth quarter of 1999, as a
    result of changing its dividend payment schedule from a quarterly basis to
    an annual basis.
                                        17
<PAGE>   20

ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
OF OPERATIONS

OVERVIEW

     Apache's 2000 results were unprecedented in its 46-year history. Record
setting fourth quarter results capped an outstanding year. Driven by the 23rd
consecutive year of production growth and historically high oil and gas
commodity prices, income attributable to common stock of $693.1 million in 2000
exceeded Apache's cumulative retained earnings of the previous 45 years.
Stockholders were rewarded with a year-end closing price of $70.0625 per share,
yielding a market capitalization of approximately $8.7 billion and a shareholder
return of 90 percent for 2000.

     Apache's financial position entering the new millennium is its strongest in
history. In mid-December 2000, Moody's Investor Service, Inc. upgraded Apache's
senior unsecured long-term debt rating to A3 from Baa1. In late January 2001,
Standard & Poor's Corporate Ratings Group upgraded Apache's senior unsecured
long-term debt rating to A- from BBB+. Debt as a percentage of total
capitalization declined to 37 percent from 41 percent at the end of 1999,
despite outlays for acquisitions and exploration and development activities
exceeding $2 billion during 2000. Apache is one of only two independent oil and
gas companies with a single-A rating from both Moody's and Standard & Poor's
rating agencies.

     Following are several performance achievements for the year:

     - Driven by the Company's acquisition and exploitation strategy, oil and
       natural gas production averaged 115 Mbbls of oil per day and 831 MMcf of
       natural gas per day for the year, 26 percent and 27 percent higher,
       respectively, than 1999's record production rates.

     - The Company added 377 MMboe to its proved reserves through acquisitions,
       drilling and revisions at a worldwide finding cost of $5.65 per boe. The
       35 percent increase in proved reserves enabled proved reserves to cross
       the one billion boe mark, transforming Apache into a larger, stronger and
       more profitable company.

     - Oil and gas production revenues more than doubled to $2.3 billion from
       $1.1 billion in 1999. Surging oil and natural gas prices contributed
       $296.5 million and $343.2 million, respectively, to the increase in
       revenues, with production growth accounting for the remainder.

     - Net cash provided by operating activities of $1.5 billion increased 140
       percent from record levels in 1999.

     - Income attributable to common stock of $693.1 million, nearly quadrupled
       1999's record. This equates to a 22 percent return on average
       shareholders' equity. Income attributable to common stock in 2000 alone
       exceeded the retained earnings accumulated over our first 45 years.

     - Basic net income per common share of $5.87 rose 239 percent over record
       1999 levels.

     Apache's outlook for 2001 is favorable given the Company's rising
production profile and current indications for strong product prices. On
December 29, 2000, the Company completed its acquisition of Phillips' Zama
assets located in Western Canada. During the first quarter of 2001, the Company
plans to close acquisitions of Fletcher Challenge Energy subsidiaries with
properties located in Western Canada and Argentina, and substantially all of
Repsol's oil and gas concession interests in Egypt. These three transactions
bring increased net production and are projected to be additive to per share
earnings and net cash provided by operating activities beginning in 2001.

     Commodity Prices -- Apache's average realized oil price increased $8.92 per
barrel from $18.45 per barrel in 1999 to $27.37 per barrel in 2000, increasing
revenues by $296.5 million. The average realized price for natural gas increased
$1.43 per Mcf from $2.16 per Mcf in 1999 to $3.59 per Mcf in 2000, positively
impacting revenues by $343.2 million.

     Production -- Oil production increased 26 percent in 2000 compared to the
prior year. The increase was primarily due to a full year of production from
properties acquired from Shell Offshore and Shell Canada in 1999, properties
acquired from Occidental in 2000 and production from the Stag field in
Australia. The

                                        18
<PAGE>   21

increase in oil production positively impacted revenues by $238.1 million. Gas
production increased due to the aforementioned acquisitions, the 1999
British-Borneo acquisition in Australia, production from the properties acquired
from Repsol in 2000, a full year of production from the Khalda concession in
Egypt and the commencement of sales through the Western Desert Gas Pipeline
which became operational in August 1999. The increase in gas production
positively impacted revenues by $231.8 million. Natural gas liquids production
increased 84 percent in 2000 compared to the prior year, which increase was
primarily due to U.S. and Canadian property acquisitions. The increase in
natural gas liquids production positively impacted revenues by $23.2 million.

RESULTS OF OPERATIONS

     Apache reported 2000 income attributable to common stock of $693.1 million,
up from $186.4 million in 1999. A significant increase in oil and gas production
revenues was partially offset by higher recurring depreciation, depletion and
amortization (DD&A) expense, lease operating costs, administrative, selling and
other (G&A) expense and interest expense. Basic net income per common share was
$5.87 for 2000, as compared to $1.73 in 1999. Income attributable to common
stock of $186.4 million was reported in 1999 as compared to a loss attributable
to common stock of $131.4 million in 1998. The 1998 loss resulted from a non-
cash, full-cost ceiling test write-down at year-end caused by sharp declines in
oil and gas prices. Basic net income per common share was $1.73 for 1999, as
compared to basic net loss per common share of $1.34 in 1998.

     Oil and gas production revenues doubled in 2000 to $2.3 billion as compared
to $1.1 billion in 1999. The increase resulted from a 48 percent increase in the
average realized oil price, a 66 percent increase in the average realized
natural gas price, a 26 percent increase in oil production and a 27 percent
increase in natural gas production. Crude oil, including natural gas liquids,
contributed 52 percent and natural gas contributed 48 percent of oil and gas
production revenues during 2000. Oil and gas production revenues increased 50
percent in 1999 to $1.1 billion as compared to $761.2 million in 1998. The
increased revenues resulted from a 45 percent increase in the average realized
oil price, a 12 percent increase in the average realized price for natural gas,
a 25 percent increase in oil production and an 11 percent increase in natural
gas production. Crude oil, including natural gas liquids, contributed 55 percent
and natural gas contributed 45 percent of oil and gas production revenues during
1999.

                                        19
<PAGE>   22

  Revenues

     The table below presents, for the years indicated, the oil and gas
production revenues, production and average prices received from sales of
natural gas, oil and natural gas liquids.

<TABLE>
<CAPTION>
                                                             FOR THE YEAR ENDED DECEMBER 31,
                                                            ----------------------------------
                                                               2000         1999        1998
                                                            ----------   ----------   --------
<S>                                                         <C>          <C>          <C>
Revenues (in thousands):
  Natural gas.............................................  $1,092,552   $  517,582   $414,887
  Oil.....................................................   1,147,386      612,829    337,946
  Natural gas liquids.....................................      50,821       13,535      8,355
                                                            ----------   ----------   --------
          Total...........................................  $2,290,759   $1,143,946   $761,188
                                                            ==========   ==========   ========
Natural Gas Volume -- Mcf per day:
  United States...........................................     544,703      461,444    432,059
  Canada..................................................     130,485       99,791    105,871
  Egypt...................................................      47,464       15,916      1,554
  Australia...............................................     107,894       76,220     50,624
  Ivory Coast.............................................          --        2,749         --
                                                            ----------   ----------   --------
          Total...........................................     830,546      656,120    590,108
                                                            ==========   ==========   ========
Average Natural Gas Price -- Per Mcf:
  United States...........................................  $     3.98   $     2.32   $   2.11
  Canada..................................................        3.52         1.73       1.36
  Egypt...................................................        4.51         3.45       1.91
  Australia...............................................        1.34         1.51       1.51
  Ivory Coast.............................................          --         1.72         --
          Total...........................................        3.59         2.16       1.93
Oil Volume -- Barrels per day:
  United States...........................................      56,521       45,556     34,067
  Canada..................................................      14,720        3,053      2,090
  Egypt...................................................      27,745       31,751     27,911
  Australia...............................................      15,551       10,624      8,838
  Ivory Coast.............................................          --           37         --
                                                            ----------   ----------   --------
          Total...........................................     114,537       91,021     72,906
                                                            ==========   ==========   ========
Average Oil Price -- Per barrel:
  United States...........................................  $    27.77   $    17.97   $  12.72
  Canada..................................................       22.25        19.35      12.55
  Egypt...................................................       27.81        18.63      12.57
  Australia...............................................       29.99        19.70      13.07
  Ivory Coast.............................................          --        15.68         --
          Total...........................................       27.37        18.45      12.70
NGL Volume -- Barrels per day:
  United States...........................................       6,030        3,308      2,267
  Canada..................................................       1,204          630        616
                                                            ----------   ----------   --------
          Total...........................................       7,234        3,938      2,883
                                                            ==========   ==========   ========
Average NGL Price -- Per barrel:
  United States...........................................  $    19.36   $     9.37   $   8.38
  Canada..................................................       18.36         9.64       6.32
          Total...........................................       19.19         9.42       7.94
</TABLE>

                                        20
<PAGE>   23

     The Company's future financial condition and results of operations will
depend upon prices received for its oil and natural gas production and the costs
of finding, acquiring, developing and producing reserves. A substantial portion
of the Company's production is sold under market-sensitive contracts. Prices for
oil and natural gas are subject to fluctuations in response to changes in
supply, market uncertainty and a variety of other factors beyond the Company's
control. These factors include worldwide political instability (especially in
the Middle East), the foreign supply of oil and natural gas, the price of
foreign imports, the level of consumer demand, and the price and availability of
alternative fuels.

     Natural gas revenues increased by 111 percent from 1999 to 2000 as a result
of increased production volumes and realized prices. The average realized gas
price increased 66 percent in 2000 positively affecting revenues by $343.2
million. U.S. natural gas production, which comprised 66 percent of the
Company's worldwide gas production, sold at an average price of $3.98 per Mcf,
72 percent higher than in 1999, positively impacting natural gas sales by $279.6
million. The Company periodically engages in hedging activities, including
fixed-price physical contracts and financial contracts. Losses under long-term
fixed-price physical contracts decreased the gas price by $.16 per Mcf in 2000
while realized gains from hedging positions positively impacted the gas price by
$.09 per Mcf in 2000.

     Natural gas production increased 174.4 MMcf/d, or 27 percent, on a
worldwide basis, favorably impacting revenue by $231.8 million in 2000. In the
United States, gas production increased 83.3 MMcf/d due to acquisition
activities in 2000 and full-year production from acquisitions in 1999.
Development activities and the impact of producing property acquisitions during
1999 increased natural gas production in Canada by 30.7 MMcf/d during 2000.
Egyptian gas production nearly tripled in 2000 reflecting a full year of
deliveries into the northern portion of the Western Desert Gas Pipeline in the
Khalda concession. Natural gas production in Australia increased 31.7 MMcf/d,
primarily due to completion of a second pipeline that increased deliverability
plus additional sales from contracts and the spot market.

     Natural gas revenues increased by 25 percent from 1998 to 1999 as a result
of increased production volumes and realized prices. The average realized gas
price increased 12 percent in 1999, positively affecting revenues by $50.6
million. The Company periodically engages in hedging activities, including
fixed-price physical contracts and financial contracts. Gains under long-term
fixed-price physical contracts increased the gas price by $.02 per Mcf in 1999
while realized losses from hedging positions negatively impacted the gas price
by $.01 per Mcf in 1999.

     Natural gas production increased 11 percent from 1998 to 1999, favorably
impacting revenues by $52.1 million. In the United States, gas production
increased 29.4 MMcf/d due to acquisition activities, primarily the Shell
Offshore acquisition in 1999. Development activities and the impact of producing
property acquisitions during late 1998 increased natural gas production in
Australia by 25.6 MMcf/d. Egyptian gas production increased tenfold in 1999 as a
result of the completion of the northern portion of the Western Desert Gas
Pipeline in the Khalda concession, where first sales commenced in August 1999.

     Crude oil revenues totaled $1.1 billion in 2000, an 87 percent increase
from 1999 due to higher average realized oil prices and production increases. On
a worldwide basis, average oil prices increased 48 percent to $27.37 per barrel
positively impacting oil sales by $296.5 million. Realized losses from hedging
positions negatively impacted the oil price by $1.62 per barrel in 2000. Oil
production increased 23,516 barrels per day, or 26 percent, in 2000. Domestic
oil production increased 10,965 barrels per day, or 24 percent, primarily due to
a full year of production from properties acquired from Shell Offshore in 1999
and production from the Collins & Ware and Occidental acquisitions in 2000.
Canada's oil production increased 382 percent to 14,720 barrels per day,
primarily due to a full year of production from properties acquired from Shell
Canada in 1999. Australian oil production increased 4,927 barrels per day, or 46
percent, over 1999 due to strong performance from the Stag field. Egyptian oil
production decreased 4,006 barrels per day, or 13 percent, as a result of the
price-driven dynamics of certain production sharing contracts.

     Crude oil revenues totaled $612.8 million in 1999, an 81 percent increase
from 1998 due to higher average realized oil prices and production increases. On
a worldwide basis, average oil prices increased 45 percent to $18.45 per barrel
positively impacting oil revenues by $152.9 million. Realized losses from
hedging positions negatively impacted the oil price by $.16 per barrel in 1999.
Oil production increased 18,115 barrels
                                        21
<PAGE>   24

per day or 25 percent, in 1999 primarily due to increases in the United States.
Domestic oil production increased 11,489 barrels per day, or 34 percent,
primarily due to the acquisition from Shell Offshore. Australian oil production
increased 1,786 barrels per day, or 20 percent, over 1998 with additional
full-year production from the Stag field. Egyptian oil production increased
3,840 barrels per day, or 14 percent, as a result of the price-driven dynamics
of certain production sharing contracts and development activity.

     Natural gas liquids revenues in 2000 increased 275 percent from 1999.
Natural gas liquids production increased 3,296 barrels per day, or 84 percent
and natural gas liquids prices increased by $9.77 per barrel, or 104 percent,
due to improved market conditions. Natural gas liquids revenues increased 62
percent in 1999 as compared to 1998. Natural gas liquids production increased
1,055 barrels per day, or 37 percent and natural gas liquids prices increased by
$1.48 per barrel, or 19 percent, due to improved market conditions.

  Operating Expenses

     Recurring DD&A expense increased to $583.5 million in 2000 from $442.8
million in 1999. On an equivalent barrel basis, recurring full cost DD&A expense
increased $.18 per boe, from $5.57 per boe in 1999 to $5.75 per boe in 2000. The
increase in the overall DD&A rate was primarily the result of the $6.74 per boe
paid to acquire Gulf of Mexico properties from Occidental. The Company's
recurring DD&A expense increased to $442.8 million in 1999 from $382.8 million
in 1998. On an equivalent barrel basis, recurring full cost DD&A expense
decreased $.09 per boe, from $5.66 per boe in 1998 to $5.57 per boe in 1999. The
decrease in the overall DD&A rate was the result of the ceiling test write-down
in 1998, which lowered the carrying amount of those properties being depleted.

     Apache limits, on a country-by-country basis, the capitalized cost of oil
and gas properties, net of accumulated DD&A and deferred income taxes, to
estimated future net cash flows from proved oil and gas reserves discounted at
10 percent, net of related tax effects, plus the lower of cost or fair value of
unproved properties included in the costs being amortized. As a result of low
oil and gas prices in the United States at December 31, 1998, Apache's
capitalized costs of oil and gas properties exceeded the ceiling limitation and
the Company reported a $243.2 million pre-tax ($158.1 million net of tax)
non-cash write-down as additional DD&A expense. No additional DD&A expense was
recorded during 2000 or 1999.

     Lease operating expense (LOE) increased from $190.6 million in 1999 to
$255.3 million in 2000. On an equivalent barrel basis, LOE for 2000 averaged
$2.68 per boe, a $.12 increase from $2.56 per boe in 1999. Domestic and Canadian
per unit costs increased, reflecting the addition of crude oil production from
the Offshore and Canadian regions. These properties typically have higher
operating costs. LOE increased from $182.1 million in 1998 to $190.6 million in
1999. On an equivalent barrel basis, LOE for 1999 averaged $2.56 per boe, a $.31
decline from $2.87 per boe in 1998. Domestic per unit costs were significantly
reduced due to lower Southern region repairs, maintenance, power and fuel costs
resulting from the sale of marginal properties, partially offset by increases in
the Offshore region due to workover costs associated with acquired properties
located in the Gulf of Mexico from Petsec and Shell Offshore. Severance and
other taxes increased from 1998 to 1999 and from 1999 to 2000 primarily due to
increased severance taxes, which generally are based on a percentage of oil and
gas production revenues, resulting from higher oil and gas prices during those
periods.

     G&A expense increased $21.7 million, or 40 percent, from 1999 to 2000. The
Company's overall infrastructure was enlarged to properly handle increased
responsibilities associated with 1999 and 2000 producing property acquisitions.
On an equivalent barrel basis, G&A expense increased 10 percent to $.79 per boe
in 2000 compared to $.72 per boe in 1999. Incentive compensation was higher in
2000 than 1999 based on the Company's performance. G&A expense increased $13.2
million, or 32 percent from 1998 to 1999. On an equivalent barrel basis, G&A
expense increased 13 percent to $.72 per boe compared to $.64 per boe in 1998.
The increase in G&A was primarily due to enlarging the Company's overall
infrastructure to properly handle increased responsibilities associated with
1999 North American producing property acquisitions.

     Net financing costs for 2000 increased $24.4 million, or 30 percent, from
1999 primarily due to higher interest expense, partially offset by higher
capitalized interest. Gross interest expense increased $35.1 million resulting
from higher average outstanding debt (up $402 million) in 2000. The weighted
average interest rate
                                        22
<PAGE>   25

on outstanding debt was 7.5 percent at December 31, 2000 and 1999. The increase
in capitalized interest was due to additional unproved properties acquired from
Shell Canada, Repsol, Collins & Ware and Occidental. Net financing costs for
1999 increased $11.7 million, or 17 percent, from 1998 primarily due to higher
interest expense and lower interest income, partially offset by higher
capitalized interest. Gross interest expense increased $13.3 million resulting
from higher average outstanding debt in 1999. The weighted average interest rate
on outstanding debt increased to 7.5 percent at December 31, 1999, from 7.2
percent at December 31, 1998. The increase in capitalized interest was
associated with Egyptian pipeline projects under construction. The decrease in
interest income was due to a lower average cash balance during 1999.

CASH FLOW, LIQUIDITY AND CAPITAL RESOURCES

  Capital Commitments

     Apache's primary needs for cash are for exploration, development and
acquisition of oil and gas properties, repayment of principal and interest on
outstanding debt, payment of dividends, and capital obligations for affiliated
ventures. The Company funds its exploration and development activities primarily
through internally generated cash flows. Apache budgets capital expenditures
based upon projected cash flows. The Company routinely adjusts its capital
expenditures in response to changes in oil and natural gas prices and cash flow.
The Company cannot accurately predict future oil and gas prices.

     Capital Expenditures -- Apache's oil and gas capital expenditures over the
last three years are summarized below:

<TABLE>
<CAPTION>
                                                         YEAR ENDED DECEMBER 31,
                                                    ----------------------------------
                                                       2000         1999        1998
                                                    ----------   ----------   --------
                                                              (IN THOUSANDS)
<S>                                                 <C>          <C>          <C>
Exploration and Development:
  United States...................................  $  495,803   $  217,476   $222,750
  Canada..........................................     135,627       45,691     69,757
  Egypt...........................................      84,949       59,808    105,431
  Australia.......................................      73,835       60,976     80,099
  Ivory Coast.....................................          --        2,553     23,527
  Other International.............................      18,077       18,835     39,856
                                                    ----------   ----------   --------
                                                       808,291      405,339    541,420
  Capitalized Interest............................      62,000       45,722     49,279
                                                    ----------   ----------   --------
          Total...................................  $  870,291   $  451,061   $590,699
                                                    ==========   ==========   ========
Acquisitions of Oil and Gas Properties............  $1,324,427   $1,391,206   $ 58,402
                                                    ==========   ==========   ========
</TABLE>

     Expenditures for exploration and development totaled $808.3 million in 2000
compared to $405.3 million in 1999. Apache's drilling program in 2000 added
123.5 MMboe of proved reserves (including revisions) and replaced 130 percent of
production. In the United States, Apache completed 325 gross wells as producers
out of 394 gross wells drilled during the year, compared with 108 gross
producers out of 130 gross wells drilled in 1999. In Canada, Apache completed 87
gross wells as producers out of 114 gross wells drilled during the year,
compared with 32 gross producers out of 49 gross wells drilled in 1999.

     Internationally, the Company completed 43 gross producers out of 82 gross
wells drilled in 2000, compared to 50 gross producers out of 73 gross wells in
1999. Successful international wells drilled in 2000 included 12 in Egypt and 31
in Australia.

     Total capital expenditures budgeted for 2001 is approximately $1 billion
(excluding acquisitions), including $750.6 million for North America. Estimated
North American exploration and development expenditures include $143.6 million
in the Southern region, $111.7 million in the Midcontinent region, $250.2
million in the Offshore region and $245.1 million in Canada. The Company has
estimated its other international exploration and development expenditures in
2001, exclusive of facilities, to total approximately

                                        23
<PAGE>   26

$295.7 million. Capital expenditures will be reviewed and possibly adjusted
throughout the year in light of changing industry conditions.

     On January 24, 2000, Apache completed the acquisition of producing
properties in Western Oklahoma and the Texas Panhandle, formerly owned by a
subsidiary of Repsol, for approximately $118.7 million, plus assumed liabilities
of approximately $29.8 million. The acquisition included estimated proved
reserves of approximately 28.7 MMboe as of the acquisition date.

     On June 30, 2000, Apache completed the acquisition of long-lived producing
properties in the Permian Basin and South Texas from Collins & Ware for
approximately $320.7 million. The acquisition included estimated proved reserves
of approximately 83.7 MMboe as of the acquisition date. One-third of the
reserves are liquid hydrocarbons.

     On August 17, 2000, Apache completed the acquisition of a Delaware limited
liability company owned by subsidiaries of Occidental and the related natural
gas production for approximately $321.2 million, plus future payments of
approximately $44.0 million over four years. The Occidental properties are
located in 32 fields on 93 blocks on the Outer Continental Shelf of the Gulf of
Mexico. The acquisition included estimated proved reserves of approximately 53.1
MMboe as of the acquisition date.

     On December 29, 2000, Apache completed the acquisition of Canadian
properties from Canadian affiliates of Phillips for approximately $490.3
million. The acquisition included estimated proved reserves of approximately
70.0 MMboe as of the acquisition date. The properties comprise approximately
212,000 net developed acres and 275,000 net undeveloped acres, 786 square miles
of 3-D seismic and 4,155 miles of 2-D seismic located in the Zama area of
Northwest Alberta. The assets also include three sour gas plants with a total
capacity of 150 MMcf per day, 13 compressor stations and 150 miles of owned and
operated gas gathering lines.

     In 2000, the Company also completed tactical regional acquisitions for cash
consideration totaling $104.0 million. These acquisitions added approximately
18.3 MMboe to the Company's proved reserves.

     In February 1999, the Company acquired oil and gas properties located in
the Gulf of Mexico from Petsec for an adjusted purchase price of $67.7 million.
The Petsec transaction included estimated proved reserves of approximately 10.2
MMboe as of the acquisition date.

     In May 1999, Apache acquired from Shell Offshore its interest in 22
producing fields and 16 undeveloped blocks located in the Gulf of Mexico. The
Shell Offshore acquisition also included certain production-related assets and
proprietary 2-D and 3-D seismic data covering approximately 1,000 blocks in the
Gulf of Mexico. The purchase price was $687.7 million in cash and one million
shares of Apache common stock (valued at $28.125 per share). The Shell Offshore
acquisition included approximately 123.2 MMboe of proved reserves as of the
acquisition date.

     In June 1999, the Company acquired a 10 percent interest in the East Spar
Joint Venture and an 8.4 percent interest in the Harriet Joint Venture, both
located in the Carnarvon Basin (offshore Western Australia), from British-Borneo
in exchange for $83.6 million cash and working interests in 11 leases in the
Gulf of Mexico. The British-Borneo transaction included approximately 16.8 MMboe
of proved reserves as of the acquisition date.

     In November 1999, Apache acquired from Shell Canada producing properties
and other assets for C$761 million (US$517.8 million). The producing properties
consist of 150,400 net acres and comprise 20 fields with an average working
interest of 55 percent and proved reserves of 87.2 MMboe as of the acquisition
date. Apache also acquired 294,294 net acres of undeveloped leaseholdings, 100
percent interest in a gas processing plant with a potential throughput capacity
of 160 MMcf/d, and 52,700 square miles of 2-D seismic and 884 square miles of
3-D seismic.

     In 1999, the Company also completed tactical regional acquisitions for cash
consideration totaling $17.7 million. These acquisitions added approximately 8.8
MMboe to the Company's proved reserves.

                                        24
<PAGE>   27

     In November 1998, the Company entered into agreements to acquire certain
oil and gas interests and companies holding oil and gas interests in the
Carnarvon Basin, offshore Western Australia, from subsidiaries of Novus for
approximately $55 million. The interests have proved reserves of approximately
5.8 MMboe and daily production of 2,400 barrels of oil equivalent. They are
within the Apache-operated Harriet Joint Venture (which includes production,
processing and pipeline infrastructure associated with the Varanus Island hub),
the Airlie Joint Venture (in which the Company held a prior interest and became
operator) and three other exploration permit areas. The transaction closed in
two stages, in December 1998 for approximately $49 million and in January 1999
for approximately $6 million.

     In 1998, the Company also completed tactical regional acquisitions for cash
consideration totaling $19.4 million. These acquisitions added approximately 9.1
MMboe to the Company's reserves.

     Pending Acquisitions -- On October 9, 2000, Apache and Shell Overseas
Holdings (Shell) signed a definitive agreement to acquire Fletcher Challenge
Energy (Fletcher). Apache's share of the transaction includes Fletcher
subsidiaries with properties in Canada's Western Sedimentary Basin and Argentina
with proved reserves of 713 Bcfe for approximately $627 million. A portion of
the acquired gas production has been hedged by Fletcher. The transaction is
scheduled to close in the first quarter of 2001, with an effective date of July
1, 2000. In a related transaction, Shell will purchase 1.64 million restricted
shares of Apache common stock for $100 million. Proceeds from this sale are
intended to be used to fund the acquisition, with the remainder to be provided
by debt.

     On January 23, 2001, Apache announced the acquisition of substantially all
of Repsol's oil and gas concession interests in Egypt for approximately $410
million with an effective date of January 1, 2001. The properties include
interests in seven Western Desert concessions. The Company already holds
interests in six of the seven concessions. The transaction will be funded with
debt and is expected to close in the first half of 2001.

     Debt and Interest Commitments -- At December 31, 2000, Apache had
outstanding debt of $680.1 million under its credit and commercial paper
facilities and an aggregate of $1.5 billion of other debt. This other debt
included notes and debentures maturing in the years 2002 through 2096. Debt
outstanding at December 31, 2000 of $2.2 billion was higher as compared to the
$1.9 billion outstanding at December 31, 1999, due to the Company's significant
acquisition activity during 2000. Even so, the Company's debt-to-capitalization
ratio improved from 41.4 percent at December 31, 1999 to 37.1 percent at
December 31, 2000. Interest payments on the Company's debt for 2001 are
projected to be $179.5 million (using weighted average balances for floating
rate obligations). Anticipated principal payments for 2001 total $25.0 million.

     Dividend Payments -- Apache paid a total of $19.7 million in dividends
during 2000 on its Series B Preferred Stock issued in August 1998 and its Series
C Preferred Stock issued in May 1999, up 56 percent from 1999, due to a full
year of dividends on the Series C Preferred Stock. Common dividends paid during
2000 totaled $33.2 million, up 12 percent from 1999, due to the increased number
of common shares outstanding. In 2000, the Company changed the dividend payment
schedule for its common stock from a quarterly basis to an annual basis, with
payment in mid-December to shareholders of record in mid-November. The Company
has paid cash dividends on its common stock for 34 consecutive years through
December 31, 2000. The Company expects to continue payment of dividends at
current levels on an annual basis. Future dividend payments will depend on the
Company's level of earnings, financial requirements and other relevant factors.

  Capital Resources and Liquidity

     The Company's primary capital resources are net cash provided by operating
activities, proceeds from financing activities and sales of non-strategic
assets.

     Net Cash Provided by Operating Activities -- Apache's net cash provided by
operating activities during 2000 totaled $1.5 billion, an increase of 140
percent over the $638.2 million reported in 1999. This increase was due
primarily to higher realized oil and gas prices as compared to 1999 and higher
oil and gas production as a result of full-year production from 1999 property
acquisitions and properties acquired in 2000. Net cash

                                        25
<PAGE>   28

provided by operating activities during 1999 increased $166.7 million from 1998
due primarily to higher oil and gas production and prices in 1999.

     Credit Facility -- On July 14, 2000, Apache entered into a new $500
million, 364-day revolving credit agreement with a group of banks. The terms of
this new facility are substantially the same as those of Apache's global credit
facility. The new facility will be used, along with the U.S. portion of the
global credit facility, to support Apache's commercial paper program, which was
increased from $700 million to $1.2 billion in late July 2000.

     Stock Transactions -- In the first quarter of 2000, the Company bought back
75,900 depository shares, each representing one-fiftieth ( 1/50) of a share of
Series C Preferred Stock, at an average price of $34.42 per share. The excess of
the purchase price to reacquire the depository shares over the original issuance
price is reflected as a preferred stock dividend in the accompanying statement
of consolidated operations.

     During 2000, the Company repurchased 478,100 shares of common stock to be
held in treasury at an average price of $37.08 per share.

     On August 2, 2000, the Company completed the public offering of 9.2 million
shares of Apache common stock, including 1.2 million shares for the
underwriters' over-allotment option, for net proceeds of approximately $433.9
million. The proceeds were used to fund a portion of the acquisitions made
during 2000 and repay indebtedness under Apache's commercial paper program.

     Asset Sales -- During 2000, Apache sold proprietary rights to certain
Canadian seismic data and various non-strategic oil and gas properties,
collecting cash of $26.3 million.

     Liquidity -- The Company had $37.2 million in cash and cash equivalents on
hand at December 31, 2000, up from $13.2 million at December 31, 1999. Apache's
ratio of current assets to current liabilities increased from 1.02:1 at December
31, 1999, to 1.14:1 at December 31, 2000.

     Management believes that cash on hand, net cash generated from operations
and unused committed borrowing capacity under its credit facilities will be
adequate to satisfy the Company's financial obligations to meet future liquidity
needs for at least the next two fiscal years. As of December 31, 2000, Apache's
available borrowing capacity under its global credit facility and 364-day
revolving credit facility was $894.9 million.

CHINA

     In June 2000, the Company's subsidiary, Apache China, filed a lawsuit
against PetroChina, China National Petroleum Corporation and China National Oil
and Gas Exploration and Development Corporation in connection with certain of
the Company's Chinese operations in the Zhao Dong Block of the Bohai Bay in
China. The Company filed seeking damages and injunctive relief to prevent the
Chinese parties from declaring that Apache and XCL-China, Ltd. had relinquished
some of the Company's Chinese exploratory acreage, and other claims. The lawsuit
was filed in the U.S. Bankruptcy Court in Opelousas, Louisiana, in connection
with bankruptcy proceedings of XCL-China, Ltd., a co-owner in the Zhao Dong
Block. On June 30, 2000, Apache and PetroChina announced having reached
agreement to resolve the outstanding issues associated with development of the
Zhao Dong Block. The agreement called for PetroChina and the China National
Petroleum Corporation to obtain various governmental approvals including
approval of the overall development plan. By the middle of February 2001, all of
the agreed actions had occurred, including all of the required governmental
approvals, and Apache-China's lawsuit was dismissed with prejudice. Apache and
the other participants in the Zhao Dong Block are preparing to begin the
construction of production facilities and development drilling in accordance
with the approved overall development plan.

                                        26
<PAGE>   29

FUTURE TRENDS

     Apache's strategy is to increase its oil and gas reserves, production, cash
flow and earnings through a balanced growth program that involves:

     - exploiting our existing asset base;

     - acquiring properties to which we can add incremental value; and

     - investing in high-potential exploration prospects.

  Exploiting Existing Asset Base

     Apache seeks to maximize the value of our existing asset base by increasing
production and reserves while reducing operating costs per unit. In order to
achieve these objectives, we rigorously pursue production enhancement
opportunities such as workovers, recompletions, and moderate risk drilling,
while divesting marginal and non-strategic properties and other activities to
reduce costs. Given the large number of transactions completed over the last two
years, Apache's inventory of exploitation opportunities has never been larger as
evidenced by our $1 billion capital plan for year 2001, which is largely
directed at exploitation activity.

  Acquiring Properties to Which We Can Add Incremental Value

     Apache seeks to purchase reserves at appropriate prices by generally
avoiding auction processes where we are competing against other buyers. Our aim
is to follow each acquisition with a cycle of reserve enhancement, property
consolidation and cash flow acceleration, facilitating asset growth and debt
reduction. In general, recent high prices and Apache's reputation for getting
deals done, have created more opportunities to negotiate for properties than was
the case several years ago. Transactions made throughout 2000 coupled with those
scheduled to close in the first half of 2001 assure that Apache will achieve its
24th consecutive year of production growth at a time that indicated product
prices for the year are strong.

  Investing in High-Potential Exploration Prospects

     Apache seeks to concentrate our exploratory investments in a select number
of international areas and to become the dominant operator in those regions. We
believe that these investments, although higher-risk, offer potential for
attractive investment returns and significant reserve additions. Our
international investments and exploration activities are a significant component
of our long-term growth strategy. They complement our North American operations,
which are more development oriented.

     A critical component in implementing our three-pronged growth strategy is
maintenance of significant financial flexibility. Apache's recent senior
unsecured long-term debt upgrades by Moody's and Standard & Poor's illustrate
our commitment to preserving a strong balance sheet and gives us a solid
foundation and competitive advantage with which to pursue our growth
initiatives.

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

COMMODITY RISK

     The Company's major market risk exposure is in the pricing applicable to
its oil and gas production. Realized pricing is primarily driven by the
prevailing worldwide price for crude oil and spot prices applicable to its
United States and Canadian natural gas production. Historically, prices received
for oil and gas production have been volatile and unpredictable and price
volatility is expected to continue. Monthly oil price realizations ranged from a
low of $22.56 per barrel to a high of $32.54 per barrel during 2000. Gas price
realizations ranged from a monthly low of $2.37 per Mcf to a monthly high of
$5.60 per Mcf during the same period.

     The Company periodically enters into hedging activities on a portion of its
projected oil and natural gas production through a variety of financial and
physical arrangements intended to support oil and natural gas

                                        27
<PAGE>   30

prices at targeted levels and to manage its exposure to oil and gas price
fluctuations. Apache may use futures contracts, swaps, options and fixed-price
physical contracts to hedge its commodity prices. Realized gains or losses from
the Company's price risk management activities are recognized in oil and gas
production revenues when the associated production occurs. Apache does not
generally hold or issue derivative instruments for trading purposes. In 2000,
Apache recognized a net loss of $90.9 million from hedging activities that
decreased oil and gas production revenues. This includes losses of $42.1 million
in derivatives and $48.8 million from fixed-price physical gas contracts. Gains
or losses on derivative contracts are expected to continue to be offset by sales
at the spot market price or to preserve the margin on existing physical gas
contracts.

     At December 31, 2000, the Company had open natural gas price swap positions
with a positive fair value of $117.5 million. A 10 percent increase in natural
gas prices would increase the fair value by $28.0 million. A 10 percent decrease
in prices would decrease the fair value by $28.0 million. The Company also had
open oil price swap positions at December 31, 2000 with a fair value of $(26.9)
million. A 10 percent increase in oil prices would change the fair value by
$(11.2) million. A 10 percent decrease in oil prices would change the fair value
by $11.2 million. Discount rates used in arriving at fair values range from 6.0
percent for 2001 to 5.9 percent for 2008.

     At December 31, 2000, the Company also had natural gas commodity collars
with a fair value of $(94.3) million and oil commodity collars with a fair value
of $9.0 million. A 10 percent increase in oil and gas prices would change the
fair values of the gas collars and the oil collars by $(42.6) million and
$(12.2) million, respectively. A 10 percent decrease in oil and gas prices would
change the fair values of the gas collars and the oil collars by $39.2 million
and $12.8 million, respectively. The model used to arrive at the fair values for
the commodity collars is based on the Black commodity pricing model. Changes in
fair value, assuming 10 percent price changes, assume non-constant volatility
with volatility based on prevailing market parameters at December 29, 2000.

     Notional volumes associated with the Company's derivative contracts are
shown in Note 9 to the Company's consolidated financial statements.

INTEREST RATE RISK

     The Company considers its interest rate risk exposure to be minimal as a
result of fixing interest rates on approximately 69 percent of the Company's
debt. At December 31, 2000, total debt included $680.1 million of floating-rate
debt. As a result, Apache's annual interest costs in 2001 will fluctuate based
on short-term interest rates on approximately 31 percent of its total debt
outstanding at December 31, 2000. The impact on annual cash flow of a 10 percent
change in the floating rate (approximately 74 basis points) would be
approximately $5.0 million. The Company did not have any open derivative
contracts relating to interest rates at December 31, 2000.

FOREIGN CURRENCY RISK

     The Company's cash flow stream relating to certain international operations
is based on the U.S. dollar equivalent of cash flows measured in foreign
currencies. Australian gas production is sold under fixed-price Australian
dollar contracts and over half the costs incurred are paid in Australian
dollars. Revenue and disbursement transactions denominated in Australian dollars
are converted to U.S. dollar equivalents based on the exchange rate as of the
transaction date. Reported cash flow relating to Canadian operations is based on
cash flows measured in Canadian dollars converted to the U.S. dollar equivalent
based on the average of the Canadian and U.S. dollar exchange rates for the
period reported. Substantially all of the Company's international transactions,
outside of Canada and Australia, are denominated in U.S. dollars.

     The Company's Polish and Australian subsidiaries have net financial assets
that are denominated in a currency other than the functional reporting currency
of the subsidiaries. A decrease in value of 10 percent in the Australian dollar
and Polish zloty relative to the U.S. dollar from the year-end exchange rates
would result in a foreign currency loss of approximately $11.3 million, based on
December 31, 2000 amounts. The Company considers its current risk exposure to
exchange rate movements, based on net cash flows, to be

                                        28
<PAGE>   31

immaterial. The Company did not have any open derivative contracts relating to
foreign currencies at December 31, 2000.

FORWARD-LOOKING STATEMENTS AND RISK

     Certain statements in this report, including statements of the future
plans, objectives, and expected performance of the Company, are forward-looking
statements that are dependent upon certain events, risks and uncertainties that
may be outside the Company's control, and which could cause actual results to
differ materially from those anticipated. Some of these include, but are not
limited to, the market prices of oil and gas, economic and competitive
conditions, inflation rates, legislative and regulatory changes, financial
market conditions, political and economic uncertainties of foreign governments,
future business decisions, and other uncertainties, all of which are difficult
to predict.

     There are numerous uncertainties inherent in estimating quantities of
proved oil and gas reserves and in projecting future rates of production and the
timing of development expenditures. The total amount or timing of actual future
production may vary significantly from reserves and production estimates. The
drilling of exploratory wells can involve significant risks, including those
related to timing, success rates and cost overruns. Lease and rig availability,
complex geology and other factors can affect these risks. Although Apache makes
use of futures contracts, swaps, options and fixed-price physical contracts to
mitigate risk, fluctuations in oil and gas prices, or a prolonged period of low
prices, may substantially adversely affect the Company's financial position,
results of operations and cash flows.

ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

     The financial statements and supplementary financial information required
to be filed under this item are presented on pages F-1 through F-38 of this Form
10-K, and are incorporated herein by reference.

ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
FINANCIAL DISCLOSURE

     None.

                                    PART III

ITEM 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

     The information set forth under the captions "Nominees for Election as
Directors," "Continuing Directors," "Executive Officers of the Company," and
"Securities Ownership and Principal Holders" in the proxy statement relating to
the Company's 2001 annual meeting of stockholders (the Proxy Statement) is
incorporated herein by reference.

ITEM 11. EXECUTIVE COMPENSATION

     The information set forth under the captions "Summary Compensation Table,"
"Option/SAR Grants Table," "Option/SAR Exercises and Year-End Value Table,"
"Long-Term Incentive Plans -- Awards in Last Fiscal Year," "Employment Contracts
and Termination of Employment and Change-in-Control Arrangements" and "Director
Compensation" in the Proxy Statement is incorporated herein by reference.

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

     The information set forth under the caption "Securities Ownership and
Principal Holders" in the Proxy Statement is incorporated herein by reference.

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

     The information set forth under the caption "Certain Business Relationships
and Transactions" in the Proxy Statement is incorporated herein by reference.

                                        29
<PAGE>   32

                                    PART IV

ITEM 14. EXHIBITS, FINANCIAL STATEMENT SCHEDULES, AND REPORTS ON FORM 8-K

     (a) Documents included in this report:

        1. Financial Statements

<TABLE>
<S>                                                            <C>
Report of management........................................    F-1
Report of independent public accountants....................    F-2
Statement of consolidated operations for each of the three
  years in the period ended December 31, 2000...............    F-3
Statement of consolidated cash flows for each of the three
  years in the period ended December 31, 2000...............    F-4
Consolidated balance sheet as of December 31, 2000 and
  1999......................................................    F-5
Statement of consolidated shareholders' equity for each of
  the three years in the period ended December 31, 2000.....    F-6
Notes to consolidated financial statements..................    F-7
Supplemental oil and gas disclosures........................   F-32
Supplemental quarterly financial data.......................   F-38
</TABLE>

        2. Financial Statement Schedules

          Financial statement schedules have been omitted because they are
     either not required, not applicable or the information required to be
     presented is included in the Company's financial statements and related
     notes.

          3. Exhibits

<TABLE>
<CAPTION>
EXHIBIT
NO.                                              DESCRIPTION
- -------                                          -----------
<C>                      <S>
          2.1            -- Purchase and Sale Agreement by and between Texaco
                            Exploration and Production Inc., as seller, and
                            Registrant, as buyer, dated December 22, 1994
                            (incorporated by reference to Exhibit 99.3 to
                            Registrant's Current Report on Form 8-K, dated November
                            29, 1994, SEC File No. 1- 4300).
          2.2            -- Amended and Restated Agreement and Plan of Merger among
                            Registrant, XPX Acquisitions, Inc and DEKALB Energy
                            Company, dated December 21, 1994 (incorporated by
                            reference to Exhibit 2.1 to Amendment No. 3 to
                            Registrant's Registration Statement on Form S-4,
                            Registration No. 33-57321, filed April 14, 1995).
          2.3            -- Agreement and Plan of Merger among Registrant, YPY
                            Acquisitions, Inc. and The Phoenix Resource Companies,
                            Inc., dated March 27, 1996 (incorporated by reference to
                            Exhibit 2.1 to Registrant's Registration Statement on
                            Form S-4, Registration No. 333-02305, filed April 5,
                            1996).
          3.1            -- Restated Certificate of Incorporation of Registrant,
                            dated December 16, 1999, as filed with the Secretary of
                            State of Delaware on December 17, 1999 (incorporated by
                            reference to Exhibit 99.1 to Registrant's Current Report
                            on Form 8-K, dated December 17, 1999, SEC File No.
                            1-4300).
          3.2            -- Bylaws of Registrant, as amended May 4, 2000
                            (incorporated by reference to Exhibit 3.1 to Registrant's
                            Quarterly Report on Form 10-Q for the quarter ended March
                            31, 2000, SEC File No. 1-4300).
          4.1            -- Form of Certificate for Registrant's Common Stock
                            (incorporated by reference to Exhibit 4.1 to Registrant's
                            Annual Report on Form 10-K for year ended December 31,
                            1995, SEC File No. 1-4300).
</TABLE>

                                        30
<PAGE>   33

<TABLE>
<CAPTION>
EXHIBIT
NO.                                              DESCRIPTION
- -------                                          -----------
<C>                      <S>
          4.2            -- Form of Certificate for Registrant's 5.68% Cumulative
                            Preferred Stock, Series B (incorporated by reference to
                            Exhibit 4.2 to Amendment No. 2 on Form 8-K/A to
                            Registrant's Current Report on Form 8-K, dated August 18,
                            1998, SEC File No. 1-4300).
          4.3            -- Form of Certificate for Registrant's Automatically
                            Convertible Equity Securities, Conversion Preferred
                            Stock, Series C (incorporated by reference to Exhibit
                            99.8 to Amendment No. 1 on Form 8-K/A to Registrant's
                            Current Report on Form 8-K, dated April 29, 1999, SEC
                            File No. 1-4300).
          4.4            -- Rights Agreement, dated January 31, 1996, between
                            Registrant and Norwest Bank Minnesota, N.A., rights
                            agent, relating to the declaration of a rights dividend
                            to Registrant's common shareholders of record on January
                            31, 1996 (incorporated by reference to Exhibit (a) to
                            Registrant's Registration Statement on Form 8-A, dated
                            January 24, 1996, SEC File No. 1-4300).
         10.1            -- Credit Agreement, dated June 12, 1997, among the
                            Registrant, the lenders named therein, Morgan Guaranty
                            Trust Company, as Global Documentation Agent and U.S.
                            Syndication Agent, The First National Bank of Chicago, as
                            U.S. Documentation Agent, NationsBank of Texas, N.A., as
                            Co-Agent, Union Bank of Switzerland, Houston Agency, as
                            Co-Agent, and The Chase Manhattan Bank, as Global
                            Administrative Agent (incorporated by reference to
                            Exhibit 10.1 to Registrant's Current Report on Form 8-K,
                            dated June 13, 1997, SEC File No. 1-4300).
         10.2            -- Credit Agreement, dated June 12, 1997, among Apache
                            Canada Ltd., a wholly-owned subsidiary of the Registrant,
                            the lenders named therein, Morgan Guaranty Trust Company,
                            as Global Documentation Agent, Royal Bank of Canada, as
                            Canadian Documentation Agent, The Chase Manhattan Bank of
                            Canada, as Canadian Syndication Agent, Bank of Montreal,
                            as Canadian Administrative Agent, and The Chase Manhattan
                            Bank, as Global Administrative Agent (incorporated by
                            reference to Exhibit 10.2 to Registrant's Current Report
                            on Form 8-K, dated June 13, 1997, SEC File No. 1-4300).
         10.3            -- Credit Agreement, dated June 12, 1997, among Apache
                            Energy Limited and Apache Oil Australia Pty Limited,
                            wholly-owned subsidiaries of the Registrant, the lenders
                            named therein, Morgan Guaranty Trust Company, as Global
                            Documentation Agent, Bank of America National Trust and
                            Savings Association, Sydney Branch, as Australian
                            Documentation Agent, The Chase Manhattan Bank, as
                            Australian Syndication Agent, Citisecurities Limited, as
                            Australian Administrative Agent, and The Chase Manhattan
                            Bank, as Global Administrative Agent (incorporated by
                            reference to Exhibit 10.3 to Registrant's Current Report
                            on Form 8-K, dated June 13, 1997, SEC File No. 1-4300).
         10.4            -- Fiscal Agency Agreement, dated January 4, 1995, between
                            Registrant and Chemical Bank, as fiscal agent, relating
                            to Registrant's 6% Convertible Subordinated Debentures
                            due 2002 (incorporated by reference to Exhibit 99.2 to
                            Registrant's Current Report on Form 8-K, dated December
                            6, 1994, SEC File No. 1-4300).
         10.5            -- Concession Agreement for Petroleum Exploration and
                            Exploitation in the Khalda Area in Western Desert of
                            Egypt by and among Arab Republic of Egypt, the Egyptian
                            General Petroleum Corporation and Phoenix Resources
                            Company of Egypt, dated April 6, 1981 (incorporated by
                            reference to Exhibit 19(g) to Phoenix's Annual Report on
                            Form 10-K for year ended December 31, 1984, SEC File No.
                            1-547).
</TABLE>

                                        31
<PAGE>   34

<TABLE>
<CAPTION>
EXHIBIT
NO.                                              DESCRIPTION
- -------                                          -----------
<C>                      <S>
         10.6            -- Amendment, dated July 10, 1989, to Concession Agreement
                            for Petroleum Exploration and Exploitation in the Khalda
                            Area in Western Desert of Egypt by and among Arab
                            Republic of Egypt, the Egyptian General Petroleum
                            Corporation and Phoenix Resources Company of Egypt
                            incorporated by reference to Exhibit 10(d)(4) to
                            Phoenix's Quarterly Report on Form 10-Q for quarter ended
                            June 30, 1989, SEC File No. 1-547).
         10.7            -- Farmout Agreement, dated September 13, 1985 and relating
                            to the Khalda Area Concession, by and between Phoenix
                            Resources Company of Egypt and Conoco Khalda
                            Inc(incorporated by reference to Exhibit 10.1 to
                            Phoenix's Registration Statement on Form S-1,
                            Registration No. 33-1069, filed October 23, 1985).
         10.8            -- Amendment, dated March 30, 1989, to Farmout Agreement
                            relating to the Khalda Area Concession, by and between
                            Phoenix Resources Company of Egypt and Conoco Khalda
                            Inc(incorporated by reference to Exhibit 10(d)(5) to
                            Phoenix's Quarterly Report on Form 10-Q for quarter ended
                            June 30, 1989, SEC File No. 1-547).
         10.9            -- Amendment, dated May 21, 1995, to Concession Agreement
                            for Petroleum Exploration and Exploitation in the Khalda
                            Area in Western Desert of Egypt between Arab Republic of
                            Egypt, the Egyptian General Petroleum Corporation, Repsol
                            Exploracion Egipto S.A., Phoenix Resources Company of
                            Egypt and Samsung Corporation (incorporated by reference
                            to exhibit 10.12 to Registrant's Annual Report on Form
                            10-K for year ended December 31, 1997, SEC File No.
                            1-4300).
         10.10           -- Concession Agreement for Petroleum Exploration and
                            Exploitation in the Qarun Area in Western Desert of
                            Egypt, between Arab Republic of Egypt, the Egyptian
                            General Petroleum Corporation, Phoenix Resources Company
                            of Qarun and Apache Oil Egypt, Inc., dated May 17, 1993
                            (incorporated by reference to Exhibit 10(b) to Phoenix's
                            Annual Report on Form 10-K for year ended December 31,
                            1993, SEC File No. 1-547).
         10.11           -- Agreement for Amending the Gas Pricing Provisions under
                            the Concession Agreement for Petroleum Exploration and
                            Exploitation in the Qarun Area, effective June 16, 1994
                            (incorporated by reference to Exhibit 10.18 to
                            Registrant's Annual Report on Form 10-K for year ended
                            December 31, 1996, SEC File No. 1-4300).
        +10.12           -- Apache Corporation Corporate Incentive Compensation Plan
                            A (Senior Officers' Plan), dated July 16, 1998
                            (incorporated by reference to Exhibit 10.13 to
                            Registrant's Annual Report on Form 10-K for year ended
                            December 31, 1998, SEC File No. 1-4300).
        +10.13           -- Apache Corporation Corporate Incentive Compensation Plan
                            B (Strategic Objectives Format), dated July 16, 1998
                            (incorporated by reference to Exhibit 10.14 to
                            Registrant's Annual Report on Form 10-K for year ended
                            December 31, 1998, SEC File No. 1-4300).
        +10.14           -- Apache Corporation 401(k) Savings Plan, dated August 1,
                            1997, effective January 1, 1997 (incorporated by
                            reference to Exhibit 10.1 to Registrant's Current Report
                            on Form 8-K, dated August 8, 1997, SEC File No. 1-4300).
        +10.15           -- Amendments to Apache Corporation 401(k) Savings Plan,
                            dated October 21, 1999, effective as of January 1, 1997
                            and 1999.
</TABLE>

                                        32
<PAGE>   35

<TABLE>
<CAPTION>
EXHIBIT
NO.                                              DESCRIPTION
- -------                                          -----------
<C>                      <S>
        +10.16           -- Apache Corporation Money Purchase Retirement Plan, dated
                            December 31, 1997, effective January 1, 1997
                            (incorporated by reference to Exhibit 10.19 to
                            Registrant's Annual Report on Form 10-K for year ended
                            December 31, 1997, SEC File No. 1-4300).
        +10.17           -- Amendments to Apache Corporation Money Purchase
                            Retirement Plan, dated October 21, 1999, effective as of
                            January 1, 1997 and 1998.
        +10.18           -- Non-Qualified Retirement/Savings Plan of Apache
                            Corporation, restated as of January 1, 1997, and
                            amendments effective as of January 1, 1997, January 1,
                            1998 and January 1, 1999 (incorporated by reference to
                            Exhibit 10.17 to Registrant's Annual Report on Form 10-K
                            for year ended December 31, 1998, SEC File No. 1-4300).
        +10.19           -- Amendment to Non-Qualified Retirement/Savings Plan of
                            Apache Corporation, dated February 22, 2000, effective as
                            of January 1, 1999 (incorporated by reference to Exhibit
                            4.7 to Registrant's Registration Statement on Form S-8,
                            Registration No. 333-31092, filed February 25, 2000); and
                            Amendment dated July 27, 2000 (incorporated by reference
                            to Exhibit 4.8 to Amendment No. 1 to Registrant's
                            Registration Statement on Form S-8, Registration No.
                            333-31092, filed August 18, 2000).
       +*10.20           -- Apache Corporation 1990 Stock Incentive Plan, as amended
                            and restated December 14, 2000, effective March 1, 2001.
       +*10.21           -- Apache Corporation 1995 Stock Option Plan, as amended and
                            restated December 14, 2000, effective March 1, 2001.
       +*10.22           -- Apache Corporation 2000 Share Appreciation Plan, dated
                            December 19, 2000, effective October 12, 2000.
       +*10.23           -- Apache Corporation 1996 Performance Stock Option Plan, as
                            amended and restated December 14, 2000, effective March
                            1, 2001.
       +*10.24           -- Apache Corporation 1998 Stock Option Plan, as amended and
                            restated December 14, 2000, effective March 1, 2001.
       +*10.25           -- Apache Corporation 2000 Stock Option Plan, as amended and
                            restated December 14, 2000, effective March 1, 2001.
        +10.26           -- 1990 Employee Stock Option Plan of The Phoenix Resource
                            Companies, Inc., as amended through September 29, 1995,
                            effective April 9, 1990 (incorporated by reference to
                            Exhibit 10.33 to Registrant's Annual Report on Form 10-K
                            for year ended December 31, 1996, SEC File No. 1-4300).
        +10.27           -- Apache Corporation Income Continuance Plan, as amended
                            and restated February 24, 1988 (incorporated by reference
                            to Exhibit 10.19 to Registrant's Annual Report on Form
                            10-K for year ended December 31, 1990, SEC File No.
                            1-4300).
       +*10.28           -- Apache Corporation Deferred Delivery Plan, as amended and
                            restated December 14, 2000.
        +10.29           -- Apache Corporation Non-Employee Directors' Compensation
                            Plan, as amended and restated December 17, 1998
                            (incorporated by reference to Exhibit 10.26 to
                            Registrant's Annual Report on Form 10-K for year ended
                            December 31, 1998, SEC File No. 1-4300).
       +*10.30           -- Apache Corporation Outside Directors' Retirement Plan, as
                            amended and restated February 8, 2001.
</TABLE>

                                        33
<PAGE>   36

<TABLE>
<CAPTION>
EXHIBIT
NO.                                              DESCRIPTION
- -------                                          -----------
<C>                      <S>
       +*10.31           -- Apache Corporation Equity Compensation Plan for
                            Non-Employee Directors, as amended and restated September
                            14, 2000.
        +10.32           -- Amended and Restated Employment Agreement, dated December
                            5, 1990, between Registrant and Raymond Plank
                            (incorporated by reference to Exhibit 10.39 to
                            Registrant's Annual Report on Form 10-K for year ended
                            December 31, 1996, SEC File No. 1-4300).
        +10.33           -- First Amendment, dated April 4, 1996, to Restated
                            Employment Agreement between Registrant and Raymond Plank
                            (incorporated by reference to Exhibit 10.40 to
                            Registrant's Annual Report on Form 10-K for year ended
                            December 31,1996, SEC File No. 1-4300).
        +10.34           -- Amended and Restated Employment Agreement, dated December
                            20, 1990, between Registrant and John A. Kocur
                            (incorporated by reference to Exhibit 10.10 to
                            Registrant's Annual Report on Form 10-K for year ended
                            December 31, 1990, SEC File No. 1-4300).
        +10.35           -- Employment Agreement, dated June 6, 1988, between
                            Registrant and G. Steven Farris (incorporated by
                            reference to Exhibit 10.6 to Registrant's Annual Report
                            on Form 10-K for year ended December 31, 1989, SEC File
                            No. 1-4300).
        +10.36           -- Conditional Stock Grant Agreement, dated December 17,
                            1998, between Registrant and G. Steven Farris
                            (incorporated by reference to Exhibit 10.33 to
                            Registrant's Annual Report on Form 10-K for year ended
                            December 31, 1998, SEC File No. 1-4300).
         10.37           -- Amended and Restated Gas Purchase Agreement, effective
                            July 1, 1998, by and among Registrant and MW Petroleum
                            Corporation, as Seller, and Producers Energy Marketing,
                            LLC, as Buyer (incorporated by reference to Exhibit 10.1
                            to Registrant's Current Report on Form 8-K, dated June
                            18, 1998, SEC File No. 1-4300).
        *12.1            -- Statement of Computation of Ratios of Earnings to Fixed
                            Charges and Combined Fixed Charges and Preferred Stock
                            Dividends
        *21.1            -- Subsidiaries of Registrant
        *23.1            -- Consent of Arthur Andersen LLP
        *23.2            -- Consent of Ryder Scott Company L.P., Petroleum
                            Consultants
        *24.1            -- Power of Attorney (included as a part of the signature
                            pages to this report)
</TABLE>

- ---------------

* Filed herewith.

+ Management contracts or compensatory plans or arrangements required to be
  filed herewith pursuant to Item 14 hereof.

          NOTE: Debt instruments of the Registrant defining the rights of
     long-term debt holders in principal amounts not exceeding 10 percent of the
     Registrant's consolidated assets have been omitted and will be provided to
     the Commission upon request.

     (b) Reports on Form 8-K

     There were no current reports on Form 8-K filed by Apache during the fiscal
quarter ended December 31, 2000.

                                        34
<PAGE>   37

                                   SIGNATURES

     Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed on
its behalf by the undersigned, thereunto duly authorized.

                                            APACHE CORPORATION

                                                    /s/ RAYMOND PLANK
                                            ------------------------------------
                                                       Raymond Plank
                                            Chairman and Chief Executive Officer

Dated: March 22, 2001

                               POWER OF ATTORNEY

     The officers and directors of Apache Corporation, whose signatures appear
below, hereby constitute and appoint Raymond Plank, G. Steven Farris, Z. S.
Kobiashvili and Roger B. Plank, and each of them (with full power to each of
them to act alone), the true and lawful attorney-in-fact to sign and execute, on
behalf of the undersigned, any amendment(s) to this report and each of the
undersigned does hereby ratify and confirm all that said attorneys shall do or
cause to be done by virtue thereof.

     Pursuant to the requirements of the Securities Exchange Act of 1934, this
report has been signed below by the following persons on behalf of the
registrant and in the capacities and on the dates indicated.

<TABLE>
<CAPTION>
                        NAME                           TITLE                                 DATE
                        ----                           -----                                 ----
<C>                                                    <S>                              <C>
                  /s/ RAYMOND PLANK                    Chairman and Chief Executive     March 22, 2001
- -----------------------------------------------------  Officer (Principal Executive
                    Raymond Plank                      Officer)

                   /s/ ROGER PLANK                     Executive Vice President and     March 22, 2001
- -----------------------------------------------------  Chief Financial Officer
                     Roger Plank                       (Principal Financial Officer)

               /s/ THOMAS L. MITCHELL                  Vice President and Controller    March 22, 2001
- -----------------------------------------------------  (Principal Accounting Officer)
                 Thomas L. Mitchell
</TABLE>
<PAGE>   38

<TABLE>
<CAPTION>
                        NAME                           TITLE                                 DATE
                        ----                           -----                                 ----
<C>                                                    <S>                              <C>
               /s/ FREDERICK M. BOHEN                  Director                         March 22, 2001
- -----------------------------------------------------
                 Frederick M. Bohen

                /s/ G. STEVEN FARRIS                   Director                         March 22, 2001
- -----------------------------------------------------
                  G. Steven Farris

               /s/ RANDOLPH M. FERLIC                  Director                         March 22, 2001
- -----------------------------------------------------
                 Randolph M. Ferlic

               /s/ EUGENE C. FIEDOREK                  Director                         March 22, 2001
- -----------------------------------------------------
                 Eugene C. Fiedorek

               /s/ A. D. FRAZIER, JR.                  Director                         March 22, 2001
- -----------------------------------------------------
                 A. D. Frazier, Jr.

                  /s/ JOHN A. KOCUR                    Director                         March 22, 2001
- -----------------------------------------------------
                    John A. Kocur

             /s/ GEORGE D. LAWRENCE, JR.               Director                         March 22, 2001
- -----------------------------------------------------
               George D. Lawrence, Jr.

                 /s/ MARY RALPH LOWE                   Director                         March 22, 2001
- -----------------------------------------------------
                   Mary Ralph Lowe

                  /s/ F. H. MERELLI                    Director                         March 22, 2001
- -----------------------------------------------------
                    F. H. Merelli

                /s/ RODMAN D. PATTON                   Director                         March 22, 2001
- -----------------------------------------------------
                  Rodman D. Patton

                /s/ CHARLES J. PITMAN                  Director                         March 22, 2001
- -----------------------------------------------------
                  Charles J. Pitman
</TABLE>
<PAGE>   39

                              REPORT OF MANAGEMENT

     The financial statements and related financial information of Apache
Corporation and subsidiaries were prepared by and are the responsibility of
management. The statements have been prepared in conformity with accounting
principles generally accepted in the United States and include amounts that are
based on management's best estimates and judgments.

     Management maintains and places reliance on systems of internal control
designed to provide reasonable assurance, weighing the costs with the benefits
sought, that all transactions are properly recorded in the Company's books and
records, that policies and procedures are adhered to, and that assets are
safeguarded. The systems of internal controls are supported by written policies
and guidelines, internal audits and the selection and training of qualified
personnel.

     The consolidated financial statements of Apache Corporation and
subsidiaries have been audited by Arthur Andersen LLP, independent public
accountants. Their audits included developing an overall understanding of the
Company's accounting systems, procedures and internal controls and conducting
tests and other auditing procedures sufficient to support their opinion on the
fairness of the consolidated financial statements.

     The Apache Corporation Board of Directors exercises its oversight
responsibility for the financial statements through its Audit Committee,
composed solely of directors who are not current or former employees of Apache.
The Audit Committee meets periodically with management, internal auditors and
the independent public accountants to ensure that they are successfully
completing designated responsibilities. The internal auditors and independent
public accountants have open access to the Audit Committee to discuss auditing
and financial reporting issues.

                                            Raymond Plank
                                            Chairman of the Board
                                            and Chief Executive Officer

                                            Roger B. Plank
                                            Executive Vice President
                                            and Chief Financial Officer

                                            Thomas L. Mitchell
                                            Vice President and Controller
                                            (Chief Accounting Officer)

Houston, Texas
March 12, 2001

                                       F-1
<PAGE>   40

                    REPORT OF INDEPENDENT PUBLIC ACCOUNTANTS

To the Shareholders of Apache Corporation:

     We have audited the accompanying consolidated balance sheet of Apache
Corporation (a Delaware corporation) and subsidiaries as of December 31, 2000
and 1999, and the related consolidated statements of operations, shareholders'
equity, and cash flows for each of the three years in the period ended December
31, 2000. These financial statements are the responsibility of the Company's
management. Our responsibility is to express an opinion on these financial
statements based on our audits.

     We conducted our audits in accordance with auditing standards generally
accepted in the United States. Those standards require that we plan and perform
the audit to obtain reasonable assurance about whether the financial statements
are free of material misstatement. An audit includes examining, on a test basis,
evidence supporting the amounts and disclosures in the financial statements. An
audit also includes assessing the accounting principles used and significant
estimates made by management, as well as evaluating the overall financial
statement presentation. We believe that our audits provide a reasonable basis
for our opinion.

     In our opinion, the consolidated financial statements referred to above
present fairly, in all material respects, the financial position of Apache
Corporation and subsidiaries as of December 31, 2000 and 1999, and the results
of their operations and their cash flows for each of the three years in the
period ended December 31, 2000, in conformity with accounting principles
generally accepted in the United States.

     As explained in Note 1 to the consolidated financial statements, effective
January 1, 2000 the Company changed its method of accounting for crude oil
inventories.

                                            ARTHUR ANDERSEN LLP

Houston, Texas
March 12, 2001

                                       F-2
<PAGE>   41

                      APACHE CORPORATION AND SUBSIDIARIES

                      STATEMENT OF CONSOLIDATED OPERATIONS

<TABLE>
<CAPTION>
                                                                 FOR THE YEAR ENDED DECEMBER 31,
                                                           --------------------------------------------
                                                               2000            1999            1998
                                                           -------------   -------------   ------------
                                                           (IN THOUSANDS, EXCEPT PER COMMON SHARE DATA)
<S>                                                        <C>             <C>             <C>
REVENUES:
  Oil and gas production revenues........................   $2,290,759      $1,143,946      $ 761,188
  Equity in income (loss) of affiliates..................          862             153         (1,558)
  Other revenues.........................................       (7,717)          2,454            840
                                                            ----------      ----------      ---------
                                                             2,283,904       1,146,553        760,470
                                                            ----------      ----------      ---------
OPERATING EXPENSES:
  Depreciation, depletion and amortization:
     Recurring...........................................      583,546         442,844        382,807
     Additional..........................................           --              --        243,178
  Lease operating costs..................................      255,251         190,576        182,138
  Severance and other taxes..............................       59,173          32,400         28,642
  Administrative, selling and other......................       75,615          53,894         40,731
  Financing costs:
     Interest expense....................................      168,121         132,986        119,703
     Amortization of deferred loan costs.................        2,726           4,854          4,496
     Capitalized interest................................      (62,000)        (53,231)       (49,279)
     Interest income.....................................       (2,209)         (2,343)        (4,383)
                                                            ----------      ----------      ---------
                                                             1,080,223         801,980        948,033
                                                            ----------      ----------      ---------
INCOME (LOSS) BEFORE INCOME TAXES........................    1,203,681         344,573       (187,563)
  Provision (benefit) for income taxes...................      483,086         143,718        (58,176)
                                                            ----------      ----------      ---------
INCOME (LOSS) BEFORE CHANGE IN ACCOUNTING PRINCIPLE......      720,595         200,855       (129,387)
  Cumulative effect of change in accounting principle,
     net of income tax...................................       (7,539)             --             --
                                                            ----------      ----------      ---------
NET INCOME (LOSS)........................................      713,056         200,855       (129,387)
  Preferred stock dividends..............................       19,988          14,449          2,004
                                                            ----------      ----------      ---------
INCOME (LOSS) ATTRIBUTABLE TO COMMON
  STOCK..................................................   $  693,068      $  186,406      $(131,391)
                                                            ==========      ==========      =========

BASIC NET INCOME (LOSS) PER COMMON SHARE:
  Before change in accounting principle..................   $     5.94      $     1.73      $   (1.34)
  Cumulative effect of change in accounting principle....         (.07)             --             --
                                                            ----------      ----------      ---------
                                                            $     5.87      $     1.73      $   (1.34)
                                                            ==========      ==========      =========
DILUTED NET INCOME (LOSS) PER COMMON SHARE:
  Before change in accounting principle..................   $     5.73      $     1.72      $   (1.34)
  Cumulative effect of change in accounting principle....         (.06)             --             --
                                                            ----------      ----------      ---------
                                                            $     5.67      $     1.72      $   (1.34)
                                                            ==========      ==========      =========
</TABLE>

The accompanying notes to consolidated financial statements are an integral part
                               of this statement.
                                       F-3
<PAGE>   42

                      APACHE CORPORATION AND SUBSIDIARIES

                      STATEMENT OF CONSOLIDATED CASH FLOWS

<TABLE>
<CAPTION>
                                                                 FOR THE YEAR ENDED DECEMBER 31,
                                                              -------------------------------------
                                                                 2000          1999         1998
                                                              -----------   -----------   ---------
                                                                         (IN THOUSANDS)
<S>                                                           <C>           <C>           <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
  Net income (loss).........................................  $   713,056   $   200,855   $(129,387)
  Adjustments to reconcile net income (loss) to net cash
    provided by operating activities:
      Depreciation, depletion and amortization..............      583,546       442,844     625,985
      Provision (benefit) for deferred income taxes.........      350,703        77,494     (81,856)
      Amortization of deferred loan costs...................        2,726         4,854       4,496
      Cumulative effect of change in accounting principle...        7,539            --          --
      Other.................................................        9,719         1,533          --
  Other non-operating activities............................        8,251          (387)      1,887
  Changes in operating assets and liabilities, net of
    effects of acquisitions:
    (Increase) decrease in receivables......................     (253,721)     (103,167)     65,487
    (Increase) decrease in advances to oil and gas ventures
      and other.............................................       (6,167)      (15,330)      3,879
    (Increase) decrease in deferred charges and other.......       (1,562)       (2,356)     13,238
    Increase (decrease) in payables.........................      111,841        24,912     (65,851)
    Increase (decrease) in accrued expenses.................       45,281        26,233     (12,161)
    Increase (decrease) in advances from gas purchasers.....      (27,850)      (24,512)     50,922
    Increase (decrease) in deferred credits and noncurrent
      liabilities...........................................      (13,976)        5,201      (5,128)
                                                              -----------   -----------   ---------
         NET CASH PROVIDED BY OPERATING ACTIVITIES..........    1,529,386       638,174     471,511
                                                              -----------   -----------   ---------
CASH FLOWS FROM INVESTING ACTIVITIES:
  Additions to property and equipment.......................   (1,010,528)     (591,316)   (699,509)
  Non-cash portion of net oil and gas property additions....       42,934       (19,884)     38,774
  Acquisition of Phillips properties........................     (490,250)           --          --
  Acquisition of Occidental properties......................     (321,206)           --          --
  Acquisition of Collins & Ware properties..................     (320,682)           --          --
  Acquisition of Repsol properties..........................     (118,678)           --          --
  Acquisition of Shell Offshore properties..................           --      (687,677)         --
  Acquisition of Shell Canada properties....................           --      (517,815)         --
  Acquisition of British-Borneo interests, net of cash
    acquired................................................           --       (83,590)         --
  Acquisition of Novus subsidiaries, net of cash acquired...           --        (5,758)    (48,499)
  Proceeds from sales of oil and gas properties.............       26,271       155,226     194,147
  Other, net................................................      (36,875)      (18,937)      2,967
                                                              -----------   -----------   ---------
         NET CASH USED IN INVESTING ACTIVITIES..............   (2,229,014)   (1,769,751)   (512,120)
                                                              -----------   -----------   ---------
CASH FLOWS FROM FINANCING ACTIVITIES:
  Long-term borrowings......................................    1,125,981     1,602,871     551,897
  Payments on long-term debt................................     (793,531)   (1,075,821)   (556,141)
  Dividends paid............................................      (52,945)      (42,264)    (28,204)
  Issuance (repurchase) of preferred stock..................       (2,613)      210,490      98,630
  Issuance of common stock..................................      465,306       455,381       1,240
  Payments to acquire treasury stock........................      (17,730)      (15,603)    (21,418)
  Cost of debt and equity transactions......................         (838)       (4,843)       (544)
                                                              -----------   -----------   ---------
         NET CASH PROVIDED BY FINANCING ACTIVITIES..........      723,630     1,130,211      45,460
                                                              -----------   -----------   ---------
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS........       24,002        (1,366)      4,851
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR..............       13,171        14,537       9,686
                                                              -----------   -----------   ---------
CASH AND CASH EQUIVALENTS AT END OF YEAR....................  $    37,173   $    13,171   $  14,537
                                                              ===========   ===========   =========
</TABLE>

The accompanying notes to consolidated financial statements are an integral part
                               of this statement.
                                       F-4
<PAGE>   43

                      APACHE CORPORATION AND SUBSIDIARIES

                           CONSOLIDATED BALANCE SHEET

<TABLE>
<CAPTION>
                                                                    DECEMBER 31,
                                                              -------------------------
                                                                 2000          1999
                                                              -----------   -----------
                                                                   (IN THOUSANDS)
<S>                                                           <C>           <C>
                                        ASSETS
CURRENT ASSETS:
  Cash and cash equivalents.................................  $    37,173   $    13,171
  Receivables...............................................      506,723       259,530
  Inventories...............................................       54,764        45,113
  Advances to oil and gas ventures and other................       31,360        25,254
                                                              -----------   -----------
                                                                  630,020       343,068
                                                              -----------   -----------
PROPERTY AND EQUIPMENT:
  Oil and gas, on the basis of full cost accounting:
    Proved properties.......................................    9,423,922     7,409,787
    Unproved properties and properties under development,
     not being amortized....................................      977,491       869,108
  Gas gathering, transmission and processing facilities.....      573,621       442,437
  Other.....................................................      119,590       105,635
                                                              -----------   -----------
                                                               11,094,624     8,826,967
  Less: Accumulated depreciation, depletion and
    amortization............................................   (4,282,162)   (3,711,109)
                                                              -----------   -----------
                                                                6,812,462     5,115,858
                                                              -----------   -----------
OTHER ASSETS:
  Deferred charges and other................................       39,468        43,617
                                                              -----------   -----------
                                                              $ 7,481,950   $ 5,502,543
                                                              ===========   ===========

                         LIABILITIES AND SHAREHOLDERS' EQUITY
CURRENT LIABILITIES:
  Current maturities of long-term debt......................  $    25,000   $     6,158
  Accounts payable..........................................      259,120       148,309
  Accrued operating expense.................................       23,893        18,226
  Accrued exploration and development.......................      143,916       101,490
  Accrued compensation and benefits.........................       34,695        22,631
  Accrued interest..........................................       25,947        28,118
  Other accrued expenses....................................       40,776        11,846
                                                              -----------   -----------
                                                                  553,347       336,778
                                                              -----------   -----------
LONG-TERM DEBT..............................................    2,193,258     1,879,650
                                                              -----------   -----------
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES:
  Income taxes..............................................      699,833       360,324
  Advances from gas purchasers..............................      153,106       180,956
  Other.....................................................      127,766        75,408
                                                              -----------   -----------
                                                                  980,705       616,688
                                                              -----------   -----------
COMMITMENTS AND CONTINGENCIES (Note 10)
SHAREHOLDERS' EQUITY:
  Preferred stock, no par value, 5,000,000 shares
    authorized --
    Series B, 5.68% Cumulative Preferred Stock,
      100,000 shares issued and outstanding.................       98,387        98,387
    Series C, 6.5% Conversion Preferred Stock, 138,482 and
      140,000 shares issued and outstanding, respectively...      208,207       210,490
  Common stock, $1.25 par, 215,000,000 shares authorized
    126,500,776 and 116,403,013 shares issued,
    respectively............................................      158,126       145,504
  Paid-in capital...........................................    2,173,183     1,717,027
  Retained earnings.........................................    1,226,531       558,721
  Treasury stock, at cost, 2,866,028 and 2,406,549 shares,
    respectively............................................      (69,562)      (52,256)
  Accumulated other comprehensive loss......................      (40,232)       (8,446)
                                                              -----------   -----------
                                                                3,754,640     2,669,427
                                                              -----------   -----------
                                                              $ 7,481,950   $ 5,502,543
                                                              ===========   ===========
</TABLE>

The accompanying notes to consolidated financial statements are an integral part
                               of this statement.

                                       F-5
<PAGE>   44

                      APACHE CORPORATION AND SUBSIDIARIES

                 STATEMENT OF CONSOLIDATED SHAREHOLDERS' EQUITY
<TABLE>
<CAPTION>

                                                              SERIES B    SERIES C
                                              COMPREHENSIVE   PREFERRED   PREFERRED    COMMON     PAID-IN      RETAINED    TREASURY
                                                 INCOME         STOCK       STOCK      STOCK      CAPITAL      EARNINGS     STOCK
                                              -------------   ---------   ---------   --------   ----------   ----------   --------
                                                                                 (IN THOUSANDS)
<S>                                           <C>             <C>         <C>         <C>        <C>          <C>          <C>
BALANCE, DECEMBER 31, 1997...................                  $    --    $     --    $118,098   $1,085,063   $  561,981   $(15,506)
  Comprehensive income:
    Net loss.................................   $(129,387)          --          --          --           --     (129,387)        --
    Currency translation adjustments.........     (12,745)          --          --          --           --           --         --
                                                ---------
  Comprehensive loss.........................   $(142,132)
                                                =========
  Dividends:
    Preferred................................                       --          --          --           --       (2,004)        --
    Common ($.28 per share)..................                       --          --          --           --      (27,492)        --
  Preferred shares issued....................                   98,387          --          --           --           --         --
  Common shares issued.......................                       --          --       6,640      160,675           --         --
  Treasury shares purchased, net.............                       --          --          --           --           --    (21,418)
                                                               -------    --------    --------   ----------   ----------   --------
BALANCE, DECEMBER 31, 1998...................                   98,387          --     124,738    1,245,738      403,098    (36,924)
  Comprehensive income:
    Net income...............................   $ 200,855           --          --          --           --      200,855         --
    Currency translation adjustments.........      24,543           --          --          --           --           --         --
    Unrealized gain on marketable securities,
      net of applicable income tax of $129...         215           --          --          --           --           --         --
                                                ---------
  Comprehensive income.......................   $ 225,613
                                                =========
  Dividends:
    Preferred................................                       --          --          --           --      (14,449)        --
    Common ($.28 per share)..................                       --          --          --           --      (30,783)        --
  Preferred shares issued....................                       --     210,490          --           --           --         --
  Common shares issued.......................                       --          --      20,766      471,289           --         --
  Treasury shares purchased, net.............                       --          --          --           --           --    (15,332)
                                                               -------    --------    --------   ----------   ----------   --------
BALANCE, DECEMBER 31, 1999...................                   98,387     210,490     145,504    1,717,027      558,721    (52,256)
  Comprehensive income:
    Net income...............................   $ 713,056           --          --          --           --      713,056         --
    Currency translation adjustments.........     (31,389)          --          --          --           --           --         --
    Unrealized loss on marketable securities,
      net of applicable income tax benefit of
      $223...................................        (397)          --          --          --           --           --         --
                                                ---------
  Comprehensive income.......................   $ 681,270
                                                =========
  Dividends:
    Preferred................................                       --          --          --           --      (19,658)        --
    Common ($.21 per share)..................                       --          --          --           --      (25,258)        --
  Preferred stock repurchased................                       --      (2,283)         --           --         (330)        --
  Common shares issued.......................                       --          --      12,622      455,728           --         --
  Treasury shares purchased, net.............                       --          --          --          428           --    (17,306)
                                                               -------    --------    --------   ----------   ----------   --------
BALANCE, DECEMBER 31, 2000...................                  $98,387    $208,207    $158,126   $2,173,183   $1,226,531   $(69,562)
                                                               =======    ========    ========   ==========   ==========   ========

<CAPTION>
                                               ACCUMULATED
                                                  OTHER           TOTAL
                                              COMPREHENSIVE   SHAREHOLDERS'
                                              INCOME (LOSS)       EQUITY
                                              -------------   --------------
                                                      (IN THOUSANDS)
<S>                                           <C>             <C>
BALANCE, DECEMBER 31, 1997...................   $(20,459)       $1,729,177
  Comprehensive income:
    Net loss.................................         --          (129,387)
    Currency translation adjustments.........    (12,745)          (12,745)
  Comprehensive loss.........................
  Dividends:
    Preferred................................         --            (2,004)
    Common ($.28 per share)..................         --           (27,492)
  Preferred shares issued....................         --            98,387
  Common shares issued.......................         --           167,315
  Treasury shares purchased, net.............         --           (21,418)
                                                --------        ----------
BALANCE, DECEMBER 31, 1998...................    (33,204)        1,801,833
  Comprehensive income:
    Net income...............................         --           200,855
    Currency translation adjustments.........     24,543            24,543
    Unrealized gain on marketable securities,
      net of applicable income tax of $129...        215               215
  Comprehensive income.......................
  Dividends:
    Preferred................................         --           (14,449)
    Common ($.28 per share)..................         --           (30,783)
  Preferred shares issued....................         --           210,490
  Common shares issued.......................         --           492,055
  Treasury shares purchased, net.............         --           (15,332)
                                                --------        ----------
BALANCE, DECEMBER 31, 1999...................     (8,446)        2,669,427
  Comprehensive income:
    Net income...............................         --           713,056
    Currency translation adjustments.........    (31,389)          (31,389)
    Unrealized loss on marketable securities,
      net of applicable income tax benefit of
      $223...................................       (397)             (397)
  Comprehensive income.......................
  Dividends:
    Preferred................................         --           (19,658)
    Common ($.21 per share)..................         --           (25,258)
  Preferred stock repurchased................         --            (2,613)
  Common shares issued.......................         --           468,350
  Treasury shares purchased, net.............         --           (16,878)
                                                --------        ----------
BALANCE, DECEMBER 31, 2000...................   $(40,232)       $3,754,640
                                                ========        ==========
</TABLE>

The accompanying notes to consolidated financial statements are an integral part
                               of this statement.

                                      F-6
<PAGE>   45

                      APACHE CORPORATION AND SUBSIDIARIES

                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

     Nature of Operations -- Apache Corporation (Apache or the Company) is an
independent energy company that explores for, develops and produces natural gas,
crude oil and natural gas liquids. The Company's North American exploration and
production activities are divided into three U.S. operating regions (Offshore,
Southern and Midcontinent) and a Canadian region. Approximately 80 percent of
the Company's proved reserves are located in North America. Internationally,
Apache has exploration and production interests in Egypt and offshore Western
Australia, and exploration interests in Poland and offshore The People's
Republic of China (China).

     Apache holds interests in many of its U.S., Canadian and international
properties through operating subsidiaries, such as Apache Canada Ltd., DEK
Energy Company (DEKALB, formerly known as DEKALB Energy Company), Apache Energy
Limited (formerly known as Hadson Energy Limited), Apache International, Inc.,
and Apache Overseas, Inc.

     The Company's future financial condition and results of operations will
depend upon prices received for its oil and natural gas production and the costs
of finding, acquiring, developing and producing reserves. A substantial portion
of the Company's production is sold under market-sensitive contracts. Prices for
oil and natural gas are subject to fluctuations in response to changes in
supply, market uncertainty and a variety of other factors beyond the Company's
control. These factors include worldwide political instability (especially in
the Middle East), the foreign supply of oil and natural gas, the price of
foreign imports, the level of consumer demand, and the price and availability of
alternative fuels. With natural gas accounting for 53 percent of Apache's 2000
production on an energy equivalent basis, the Company is affected more by
fluctuations in natural gas prices than in oil prices.

     Principles of Consolidation -- The accompanying consolidated financial
statements include the accounts of Apache and its subsidiaries after elimination
of intercompany balances and transactions. The Company's interests in oil and
gas exploration and production ventures and partnerships are proportionately
consolidated. Apache's investment in Producers Energy Marketing LLC (ProEnergy)
and a pipeline partnership in Western Australia were accounted for using the
equity method for the periods of ownership.

     Beginning in the first quarter 2000, the portion of gathering, processing
and marketing margin related to oil and gas production revenues has been
reported as a net addition to oil and gas production revenues and the portion
related to gathering fee income has been reported as a reduction to operating
costs in the accompanying statement of consolidated operations.
Reclassifications have been made to reflect this change in the prior year
statements of consolidated operations.

     Cash Equivalents -- The Company considers all highly liquid debt
instruments purchased with an original maturity of three months or less to be
cash equivalents. These investments are carried at cost, which approximates
market.

     Inventories -- Inventories consist principally of tubular goods and
production equipment, stated at the lower of weighted average cost or market,
and oil produced but not sold, stated at the lower of cost (a combination of
production costs and depreciation, depletion and amortization (DD&A) expense) or
market.

     Property and Equipment -- The Company uses the full cost method of
accounting for its investment in oil and gas properties. Under this method, the
Company capitalizes all acquisition, exploration and development costs incurred
for the purpose of finding oil and gas reserves, including salaries, benefits
and other internal costs directly attributable to these activities. Exclusive of
field-level costs, Apache capitalized $22.6 million, $14.2 million and $12.2
million of internal costs in 2000, 1999 and 1998, respectively. Costs associated
with production and general corporate activities are expensed in the period
incurred. Internal costs attributable to the management of the Company's
producing properties, before recoveries from industry partners, totaled $29.4
million, $24.4 million and $23.1 million in 2000, 1999 and 1998, respectively,
and are

                                       F-7
<PAGE>   46
                      APACHE CORPORATION AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

included in operating costs in the Company's statement of consolidated
operations. Interest costs related to unproved properties and properties under
development are also capitalized to oil and gas properties. Unless a significant
portion of the Company's proved reserve quantities in a particular country are
sold (greater than 25 percent), proceeds from the sale of oil and gas properties
are accounted for as a reduction to capitalized costs, and gains and losses are
not recognized.

     Apache computes the provision for recurring DD&A of oil and gas properties
on a quarterly basis using the unit-of-production method based upon production
and estimates of proved reserve quantities. Unevaluated costs and related
capitalized interest costs are excluded from the amortization base until the
properties associated with these costs are evaluated. The amortizable base
includes estimated future development costs and dismantlement, restoration and
abandonment costs, net of estimated salvage values. These future costs are
generally estimated by engineers employed by Apache.

     Apache limits, on a country-by-country basis, the capitalized costs of
proved oil and gas properties, net of accumulated DD&A and deferred income
taxes, to the estimated future net cash flows from proved oil and gas reserves
discounted at 10 percent, net of related tax effects, plus the lower of cost or
fair value of unproved properties included in the costs being amortized. If
capitalized costs exceed this limit, the excess is charged to additional DD&A
expense. Included in the estimated future net cash flows are Canadian provincial
tax credits expected to be realized beyond the date at which the legislation,
under its provisions, could be repealed. To date, the Canadian provincial
government has not indicated an intention to repeal this legislation.

     As a result of low oil and gas prices at December 31, 1998, Apache's
capitalized costs of U.S. oil and gas properties exceeded the ceiling limitation
and the Company recorded a $243.2 million pre-tax ($158.1 million net of tax)
non-cash write-down in 1998. The write-down is reflected as additional DD&A
expense in the accompanying statement of consolidated operations. Given the
volatility of oil and gas prices, it is reasonably possible that the Company's
estimate of discounted future net cash flows from proved oil and gas reserves
could change in the near term. If oil and gas prices decline significantly, even
if only for a short period of time, it is possible that additional write-downs
of oil and gas properties could occur in the future.

     The costs of certain unevaluated leasehold acreage and wells being drilled
are not being amortized. Costs not being amortized are periodically assessed for
possible impairments or reductions in value. If a reduction in value has
occurred, costs being amortized are increased or a charge is made against
earnings for those international operations where a reserve base is not yet
established.

     Buildings, equipment and gas gathering, transmission and processing
facilities are depreciated on a straight-line basis over the estimated useful
lives of the assets, which range from 3 to 20 years. Accumulated depreciation
for these assets totaled $131.2 million and $97.4 million at December 31, 2000
and 1999, respectively.

     Accounts Payable -- Included in accounts payable at December 31, 2000 and
1999, are liabilities of approximately $55.5 million and $41.6 million,
respectively, representing the amount by which checks issued, but not presented
to the Company's banks for collection, exceeded balances in applicable bank
accounts.

     Revenue Recognition -- Apache uses the sales method of accounting for
natural gas revenues. Under this method, revenues are recognized based on actual
volumes of gas sold to purchasers. The volumes of gas sold may differ from the
volumes to which Apache is entitled based on its interests in the properties.
Differences between volumes sold and entitled volumes create gas imbalances
which are generally reflected as adjustments to reported proved gas reserves and
future cash flows in the Company's supplemental oil and gas disclosures.
Adjustments for gas imbalances totaled less than one percent of Apache's proved
gas reserves at December 31, 2000. Revenue is deferred and a liability is
recorded for those properties where the estimated remaining reserves will not be
sufficient to enable the underproduced owner to recoup its entitled share
through production.

                                       F-8
<PAGE>   47
                      APACHE CORPORATION AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

     Derivative Instruments and Hedging Activities -- Apache periodically enters
into commodity derivatives contracts and fixed-price physical contracts to
manage its exposure to oil and gas price volatility. Commodity derivatives
contracts, which are usually placed with major financial institutions that the
Company believes are minimal credit risks, may take the form of futures
contracts, swaps or options. The oil and gas reference prices upon which these
commodity derivatives contracts are based reflect various market indices that
have a high degree of historical correlation with actual prices received by the
Company. The Company accounts for its commodity derivatives contracts using the
hedge (or deferral) method of accounting. Under this method, realized gains and
losses from the Company's price risk management activities are recognized in oil
and gas production revenues when the associated production occurs and the
resulting cash flows are reported as cash flows from operating activities. Gains
and losses on commodity derivatives contracts that are closed before the hedged
production occurs are deferred until the production month originally hedged. In
the event of a loss of correlation between changes in oil and gas reference
prices under a commodity derivatives contract and actual oil and gas prices, a
gain or loss is recognized currently to the extent the commodity derivatives
contract has not offset changes in actual oil and gas prices.

     In June 1998, the Financial Accounting Standards Board (FASB) issued
Statement of Financial Accounting Standards (SFAS) No. 133, "Accounting for
Derivative Instruments and Hedging Activities." SFAS No. 133 establishes
accounting and reporting standards requiring that derivative instruments
(including certain derivative instruments embedded in other contracts), as
defined, be recorded in the balance sheet as either an asset or liability
measured at fair value, and requires that changes in fair value be recognized
currently in earnings unless specific hedge accounting criteria are met. Special
accounting for qualifying hedges allows unrealized gains and losses to be
deferred in other comprehensive income (for the effective portion of the hedge)
until such time as the hedged transaction occurs, and requires that a company
formally document, designate, and assess the effectiveness of derivative
instruments that receive hedge accounting treatment.

     Apache adopted SFAS No. 133 on January 1, 2001. The Company recognized a
derivative asset of $121.5 million reflecting the fair value of gas price swaps
entered into in connection with the advances from gas purchasers described in
Note 6. A liability in the same amount was recorded to reflect the obligation to
deliver gas at current forward market prices in excess of the contractual prices
at the inception of the transactions. All other derivative instruments, as
discussed in Note 9, were recorded at fair value representing a net liability of
$116.2 million on the date of adoption. The offset to this liability is a charge
of $71.3 million, net of income taxes, reported in other comprehensive income in
the consolidated balance sheet. However, the FASB continues to deliberate the
appropriate accounting for the portion of the transition adjustment associated
with the time value component of option contracts (zero-cost collars) used by
the Company to manage its exposure to oil and gas price volatility. If the FASB
determines that the time value component of option contracts should be recorded
in earnings at transition, the Company would be required to record a cumulative
effect-type loss to earnings on January 1, 2001 of $21.2 million, net of income
taxes.

     Income Taxes -- The Company follows the liability method of accounting for
income taxes under which deferred tax assets and liabilities are recognized for
the future tax consequences of (i) temporary differences between the tax bases
of assets and liabilities and their reported amounts in the financial statements
and (ii) operating loss and tax credit carryforwards for tax purposes. Deferred
tax assets are reduced by a valuation allowance when, based upon management's
estimates, it is more likely than not that a portion of the deferred tax assets
will not be realized in a future period.

     Foreign Currency Translation -- The U.S. dollar is considered the
functional currency for each of the Company's international operations, except
for its Canadian subsidiary whose functional currency is the Canadian dollar.
Translation adjustments resulting from translating the Canadian subsidiary's
foreign currency

                                       F-9
<PAGE>   48
                      APACHE CORPORATION AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

financial statements into U.S. dollar equivalents are reported separately and
accumulated in other comprehensive income. For other international operations,
transaction gains and losses are recognized in net income.

     Net Income (Loss) Per Common Share -- Basic and diluted net income (loss)
per common share have been computed in accordance with SFAS No. 128, "Earnings
per Share." Basic net income (loss) per common share is computed by dividing
income (loss) attributable to common stock by the weighted average number of
common shares outstanding for the period. Diluted net income per common share
reflects the potential dilution that could occur if securities or other
contracts to issue common stock were exercised or converted into common stock.
Diluted net loss per common share does not reflect dilution from potential
common shares, because to do so would be antidilutive. Calculations of basic and
diluted net income (loss) per common share are illustrated in Note 7.

     Stock-Based Compensation -- The Company accounts for employee stock-based
compensation using the intrinsic value method prescribed by Accounting
Principles Board (APB) Opinion No. 25, "Accounting for Stock Issued to
Employees" and related interpretations. Nonemployee stock-based compensation is
accounted for using the fair value method in accordance with SFAS No. 123,
"Accounting for Stock-Based Compensation."

     Use of Estimates -- The preparation of financial statements in conformity
with accounting principles generally accepted in the U.S. requires management to
make estimates and assumptions that affect the reported amounts of assets and
liabilities and disclosure of contingent assets and liabilities at the date of
the financial statements and the reported amounts of revenues and expenses
during the reporting period. Actual results could differ from those estimates.
Significant estimates with regard to these financial statements include the
estimate of proved oil and gas reserve quantities and the related present value
of estimated future net cash flows therefrom (see Supplemental Oil and Gas
Disclosures).

     Change in Accounting Principle -- In December 2000, the staff of the
Securities and Exchange Commission (SEC) announced that commodity inventories
should be carried at cost, not market value, despite longstanding industry
practice. As a result, Apache changed its accounting for crude oil inventories
in the fourth quarter of 2000, retroactive to the beginning of the year, and
recognized a non-cash cumulative-effect charge to earnings effective January 1,
2000 of $7.5 million, net of income tax, to value crude oil inventory at cost.
Quarterly results for 2000 also were restated to reflect this change in
accounting (see Supplemental Quarterly Financial Data).

2. ACQUISITIONS AND DIVESTITURES

  Acquisitions

     On January 24, 2000, Apache completed the acquisition of producing
properties in Western Oklahoma and the Texas Panhandle, formerly owned by a
subsidiary of Repsol YPF (Repsol), for approximately $118.7 million, plus
assumed liabilities of approximately $29.8 million. The acquisition included
estimated proved reserves of approximately 28.7 million barrels of oil
equivalent (MMboe) as of the acquisition date.

     On June 30, 2000, Apache completed the acquisition of long-lived producing
properties in the Permian Basin and South Texas from Collins & Ware, Inc.
(Collins & Ware) for approximately $320.7 million. The acquisition included
estimated proved reserves of approximately 83.7 MMboe as of the acquisition
date. One-third of the reserves are liquid hydrocarbons.

     On August 17, 2000, Apache completed the acquisition of a Delaware limited
liability company (LLC) owned by subsidiaries of Occidental Petroleum
Corporation (Occidental) and the related natural gas production for
approximately $321.2 million, plus future payments of approximately $44.0
million over four years. The Occidental properties are located in 32 fields on
93 blocks on the Outer Continental Shelf of the

                                       F-10
<PAGE>   49
                      APACHE CORPORATION AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

Gulf of Mexico. The acquisition included estimated proved reserves of
approximately 53.1 MMboe as of the acquisition date.

     On December 29, 2000, Apache completed the acquisition of Canadian
properties from Canadian affiliates of Phillips Petroleum Company (Phillips) for
approximately $490.3 million. The acquisition included estimated proved reserves
of approximately 70.0 MMboe as of the acquisition date. The properties comprise
approximately 212,000 net developed acres and 275,000 net undeveloped acres, 786
square miles of 3-D seismic and 4,155 miles of 2-D seismic located in the Zama
area of Northwest Alberta. The assets also include three sour gas plants with a
total capacity of 150 million cubic feet (MMcf) per day, 13 compressor stations
and 150 miles of owned and operated gas gathering lines.

     In 2000, the Company also completed tactical regional acquisitions for cash
consideration totaling $104.0 million. These acquisitions added approximately
18.3 MMboe to the Company's proved reserves.

     On February 1, 1999, the Company acquired oil and gas properties located in
the Gulf of Mexico from Petsec Energy Inc. (Petsec) for an adjusted purchase
price of $67.7 million. The Petsec transaction included estimated proved
reserves of approximately 10.2 MMboe as of the acquisition date.

     On May 18, 1999, Apache acquired from Shell Offshore Inc. and affiliated
Shell entities (Shell Offshore) its interest in 22 producing fields and 16
undeveloped blocks located in the Gulf of Mexico. The Shell Offshore acquisition
also included certain production-related assets and proprietary 2-D and 3-D
seismic data covering approximately 1,000 blocks in the Gulf of Mexico. The
purchase price was $687.7 million in cash and one million shares of Apache
common stock (valued at $28.125 per share). The Shell Offshore acquisition
included approximately 123.2 MMboe of proved reserves as of the acquisition
date.

     On June 18, 1999, the Company acquired a 10 percent interest in the East
Spar Joint Venture and an 8.4 percent interest in the Harriet Joint Venture,
both located in the Carnarvon Basin (offshore Western Australia), from
British-Borneo Oil and Gas Plc (British-Borneo) in exchange for $83.6 million
cash and working interests in 11 leases in the Gulf of Mexico. The
British-Borneo transaction included approximately 16.8 MMboe of proved reserves
as of the acquisition date.

     The purchase price was allocated to the assets purchased and the
liabilities assumed in the British-Borneo transaction based upon the fair values
on the date of acquisition, as follows (in thousands):

<TABLE>
<S>                                                           <C>
Value of properties acquired, including gathering and
  transportation facilities.................................  $ 98,582
Value of Gulf of Mexico leases..............................    (3,209)
Working capital acquired, net...............................     4,123
Deferred income tax liability...............................   (15,906)
                                                              --------
Cash paid, net of cash acquired.............................  $ 83,590
                                                              ========
</TABLE>

     On November 30, 1999, Apache acquired from Shell Canada Limited (Shell
Canada) producing properties and other assets for C$761 million (US$517.8
million). The producing properties consisted of 150,400 net acres and comprised
20 fields with an average working interest of 55 percent and proved reserves of
87.2 MMboe as of the acquisition date. Apache also acquired 294,294 net acres of
undeveloped leaseholdings, a 100 percent interest in a gas processing plant with
a potential throughput capacity of 160 MMcf per day, and 52,700 square miles of
2-D seismic and 884 square miles of 3-D seismic.

     The following unaudited pro forma information shows the effect on the
Company's consolidated results of operations as if the Shell Offshore and Shell
Canada acquisitions occurred on January 1, 1998, and the

                                       F-11
<PAGE>   50
                      APACHE CORPORATION AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

Collins & Ware, Occidental and Phillips acquisitions occurred on January 1,
1999. The pro forma information is based on numerous assumptions and is not
necessarily indicative of future results of operations.

<TABLE>
<CAPTION>
                                                    FOR THE YEAR ENDED DECEMBER 31,
                             ------------------------------------------------------------------------------
                                       2000                       1999                       1998
                             ------------------------   ------------------------   ------------------------
                             AS REPORTED   PRO FORMA    AS REPORTED   PRO FORMA    AS REPORTED   PRO FORMA
                             -----------   ----------   -----------   ----------   -----------   ----------
(UNAUDITED)                                   (IN THOUSANDS, EXCEPT PER COMMON SHARE DATA)
<S>                          <C>           <C>          <C>           <C>          <C>           <C>
Revenues...................  $2,283,904    $2,576,941   $1,146,553    $1,620,301    $ 760,470    $1,104,700
Net income (loss)..........     713,056       771,047      200,855       243,946     (129,387)      (81,206)
Preferred stock
  dividends................      19,988        19,988       14,449        19,738        2,004        16,109
Income (loss) attributable
  to common stock..........     693,068       751,059      186,406       224,208     (131,391)      (97,315)
Net income (loss) per
  common share:
  Basic....................  $     5.87    $     6.09   $     1.73    $     1.82    $   (1.34)   $     (.85)
  Diluted..................        5.67          5.88         1.72          1.81        (1.34)         (.85)
Average common shares
  outstanding..............     117,979       123,358      107,936       123,123       98,066       114,016
</TABLE>

     In 1999, the Company also completed tactical regional acquisitions for cash
consideration totaling $17.7 million. These acquisitions added approximately 8.8
MMboe to the Company's proved reserves.

     In November 1998, the Company entered into agreements to acquire certain
oil and gas interests and companies holding oil and gas interests in the
Carnarvon Basin, offshore Western Australia, from subsidiaries of Novus
Petroleum Limited (Novus) for approximately $55 million. The interests have
estimated proved reserves of approximately 5.8 MMboe and daily production of
2,400 barrels of oil equivalent. They are within the Apache-operated Harriet
Joint Venture (which includes production, processing and pipeline infrastructure
associated with the Varanus Island hub), the Airlie Joint Venture (in which the
Company held a prior interest and became operator) and three other exploration
permit areas. The transaction closed in two stages, in December 1998
(approximately $49 million) and in January 1999 (approximately $6 million).
Under the terms of an agreement with Novus, the Company may be required to make
additional payments to Novus based on proved and probable recoverable oil and
condensate reserves, as determined by independent engineers, on a defined
geological structure in the Gipsy-Rose-Lee area, offshore Western Australia. If
required, such payments would be calculated using $2.50 for each barrel of
proved and $1.25 for each barrel of probable oil and condensate reserves. A
payment becomes due if and when a decision is made to construct facilities for
the production of oil or condensate from the designated area.

     The total purchase price for the two stages of the Novus transaction was
allocated to the assets purchased and the liabilities assumed based upon the
fair values on the date of acquisition, as follows (in thousands):

<TABLE>
<S>                                                           <C>
Value of properties acquired, including gathering and
  transportation facilities.................................  $ 62,657
Working capital acquired, net...............................     2,658
Deferred income tax liability...............................   (11,058)
                                                              --------
Cash paid, net of cash acquired.............................  $ 54,257
                                                              ========
</TABLE>

     In 1998, the Company also completed tactical regional acquisitions for cash
consideration totaling $19.4 million. These acquisitions added approximately 9.1
MMboe to the Company's proved reserves.

     Each transaction described above has been accounted for using the purchase
method of accounting and has been included in the financial statements of Apache
since the date of acquisition.

                                       F-12
<PAGE>   51
                      APACHE CORPORATION AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

  Pending Acquisitions

     On October 9, 2000, Apache and Shell Overseas Holdings (Shell) signed a
definitive agreement to acquire Fletcher Challenge Energy (Fletcher). Apache's
share of the transaction includes Fletcher subsidiaries with properties in
Canada's Western Sedimentary Basin and Argentina with proved reserves of 713
billion cubic feet of natural gas equivalent for approximately $627 million,
subject to normal post closing adjustments. A portion of the acquired gas
production has been hedged by Fletcher. The transaction is scheduled to close in
the first quarter of 2001, with an effective date of July 1, 2000. In a related
transaction, Shell will purchase 1.64 million restricted shares of Apache common
stock for $100 million. Proceeds from this sale are intended to be used to fund
the acquisition, with the remainder to be provided by debt.

     On January 23, 2001, Apache announced the acquisition of substantially all
of Repsol's oil and gas concession interests in Egypt for approximately $410
million with an effective date of January 1, 2001. The properties include
interests in seven Western Desert concessions. The Company already holds
interests in six of the seven concessions. The transaction will be funded with
debt and is expected to close in the first half of 2001.

  Divestitures

     During 2000, Apache sold proprietary rights to certain Canadian seismic
data and various non-strategic oil and gas properties, collecting cash of $26.3
million.

     On September 3, 1999, Apache sold its holdings in the Ivory Coast by
selling its wholly-owned subsidiary, Apache Cote d'Ivoire Petroleum LDC, for a
total sales price of $46.1 million to a consortium consisting of Mondoil Cote
d'Ivoire LLC and Saur Energie Cote d'Ivoire. The sale consisted of 13.7 MMboe of
proved reserves and a gain was recorded to other revenues in the accompanying
statement of consolidated operations.

     Additionally, during 1999, Apache sold 27.9 MMboe of proved reserves in
several transactions from largely marginal North American properties for $110
million.

     In 1998, Apache sold marginal properties, primarily in North America,
containing 29.6 MMboe of proved reserves, for $131.1 million. Apache used the
sales proceeds to reduce bank debt.

3. INVESTMENTS IN EQUITY SECURITIES

     Apache has certain investments in equity securities which are classified as
"available for sale" pursuant to SFAS No. 115, "Accounting for Certain
Investments in Debt and Equity Securities." The aggregate cost basis totaled
$1.3 million and $2.3 million at December 31, 2000 and 1999, respectively. The
aggregate fair value approximated $987,000 and the unrealized loss was
approximately $276,000 at December 31, 2000. The aggregate fair value
approximated $2.6 million and the unrealized gain was approximately $300,000 at
December 31, 1999. At December 31, 1998, Apache had no investments in equity
securities.

     The Company realized an aggregate gain from the sale of equity securities
totaling $752,000 during 2000, gains totaling $234,000 during 1999 and losses of
$364,000 during 1998. Apache utilizes the average cost method in computing
realized gains or losses, which are included in other revenues in the
accompanying statement of consolidated operations.

                                       F-13
<PAGE>   52
                      APACHE CORPORATION AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

4. DEBT

  Long-Term Debt

<TABLE>
<CAPTION>
                                                                   DECEMBER 31,
                                                              -----------------------
                                                                 2000         1999
                                                              ----------   ----------
                                                                  (IN THOUSANDS)
<S>                                                           <C>          <C>
Apache:
  Money market lines of credit..............................  $   25,000   $    6,158
  Commercial paper, expected to be refinanced...............     510,100           --
  9.25-percent notes due 2002, net of discount..............      99,926       99,882
  7-percent notes due 2018, net of discount.................     148,339      148,291
  7.625-percent notes due 2019, net of discount.............     149,085      149,063
  7.7-percent notes due 2026, net of discount...............      99,650       99,646
  7.95-percent notes due 2026, net of discount..............     178,577      178,560
  7.375-percent debentures due 2047, net of discount........     147,998      147,993
  7.625-percent debentures due 2096, net of discount........     149,175      149,175
                                                              ----------   ----------
                                                               1,507,850      978,768
                                                              ----------   ----------
Subsidiary and other obligations:
  Global credit facility -- Australia.......................      95,000      116,000
  Revolving credit facility -- Egypt........................      50,000      196,590
  DEKALB 9.875-percent notes due 2000.......................          --       29,225
  Apache Finance Australia 6.5-percent notes due 2007, net
     of discount............................................     169,023      168,916
  Apache Finance Australia 7-percent notes due 2009, net of
     discount...............................................      99,425       99,376
  Apache Finance Canada 7.75-percent notes due 2029, net of
     discount...............................................     296,960      296,933
                                                              ----------   ----------
                                                                 710,408      907,040
                                                              ----------   ----------
Total debt..................................................   2,218,258    1,885,808
Less: current maturities....................................     (25,000)      (6,158)
                                                              ----------   ----------
Long-term debt..............................................  $2,193,258   $1,879,650
                                                              ==========   ==========
</TABLE>

     On July 14, 2000, Apache entered into a new $500 million, 364-day revolving
credit facility with a group of banks. The terms of this new facility are
substantially the same as those of Apache's global credit facility. The new
facility will be used, along with the U.S. portion of the global credit
facility, to support Apache's commercial paper program.

     In June 1997, Apache replaced its $1 billion global borrowing-base credit
facility with a new $1 billion global corporate credit facility (global credit
facility). The global credit facility consists of three separate bank
facilities: a $700 million facility in the United States; a $175 million
facility in Australia; and a $125 million facility in Canada. The global credit
facility enables Apache to draw on the entire $1 billion facility without
restrictions tied to periodic revaluation of the Company's oil and gas reserves.
Under the financial covenants of the global credit facility, the Company must
(i) maintain a consolidated tangible net worth, as defined, of at least $1.5
billion as of December 31, 2000, which is adjusted for subsequent earnings, and
(ii) maintain a ratio of debt to capitalization of not greater than 60 percent
at the end of any fiscal quarter. The Company was in compliance with all
financial covenants at December 31, 2000.

     As of December 31, 2000, the global credit facility was scheduled to mature
on June 12, 2002, in the amount of $30 million and the remaining $970 million on
June 12, 2003. In February 2001, the $30 million of commitments scheduled to
mature on June 12, 2002, were extended one year, resulting in the entire credit
facility maturing on June 12, 2003. At the Company's option, the interest rate
is based on (i) the greater of (a) The Chase Manhattan Bank's prime rate or (b)
the federal funds rate plus one-half of one percent,

                                       F-14
<PAGE>   53
                      APACHE CORPORATION AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

(ii) the London Interbank Offered Rate (LIBOR) plus a margin determined by the
Company's senior long-term debt rating, or (iii) a margin that is determined by
competitive bids from the participating banks. At December 31, 2000, the margin
over LIBOR for committed loans was .17 percent. The Company also pays a
quarterly facility fee of .08 percent on the total amount of each of the three
facilities, which fee varies based upon the Company's senior long-term debt
rating.

     As of December 31, 2000, Apache's available borrowing capacity under its
global credit facility and 364-day revolving credit facility was $894.9 million.

     At December 31, 2000, the Company also had certain uncommitted money market
lines of credit which are used from time to time for working capital purposes.
As of December 31, 2000, an aggregate of $25 million was outstanding under such
credit lines.

     In January 1997, the Company established a $300 million commercial paper
program which enables Apache to borrow funds for up to 270 days at competitive
interest rates. In June 1997, Apache expanded its commercial paper program to
$700 million from $300 million to provide access to additional low-cost, short-
term funds. In July 2000, the Company further expanded its commercial paper
program to $1.2 billion. The commercial paper balance at December 31, 2000, was
classified as long-term debt in the accompanying consolidated balance sheet as
the Company has the ability and intent to refinance such amounts on a long-term
basis through either the rollover of commercial paper or available borrowing
capacity under the U.S. portion of the global credit facility and 364-day
revolving credit facility. The weighted average interest rate for commercial
paper was 6.56 percent in 2000.

     In January 1998, approximately 90 percent, or $155.6 million, of the
Company's 6-percent convertible subordinated debentures was converted into
approximately 5.1 million shares of Apache common stock at a conversion price of
$30.68 per share. The remaining $16.9 million of principal amount was redeemed
for $17.4 million in cash, plus accrued and unpaid interest. The Company
recorded a $.8 million loss on the early extinguishment of debt in January 1998.

     In May 1992, Apache issued $100 million of 9.25-percent notes which mature
in June 2002. The Company does not have the right to redeem the notes prior to
maturity.

     In February 1998, Apache issued $150 million principal amount, $148.2
million net of discount, of senior unsecured 7-percent notes maturing on
February 1, 2018. The Company does not have the right to redeem the notes prior
to maturity.

     In June 1999, the Company issued $150 million principal amount, $149.1
million net of discount, of senior unsecured 7.625-percent notes due July 1,
2019. The Company does not have the right to redeem the notes prior to maturity.

     In February 1996, Apache issued $100 million principal amount, $99.6
million net of discount, of senior unsecured 7.7-percent notes due March 15,
2026. In April 1996, the Company issued $180 million principal amount, $178.5
million net of discount, of senior unsecured 7.95-percent notes maturing on
April 15, 2026. The notes are not redeemable prior to maturity; however, under
certain conditions, Apache has the right to advance maturity of these notes.

     In August 1997, Apache issued $150 million principal amount, $148 million
net of discount, of senior unsecured 7.375-percent debentures maturing on August
15, 2047. The debentures are not redeemable prior to maturity; however, Apache
has the right to advance maturity, under certain conditions.

     In November 1996, Apache issued $150 million principal amount, $149.2
million net of discount, of senior unsecured 7.625-percent debentures maturing
on November 1, 2096. The debentures are not redeemable prior to maturity;
however, under certain conditions, Apache has the right to advance maturity of
these debentures.

                                       F-15
<PAGE>   54
                      APACHE CORPORATION AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

     Upon certain changes in control, the debt instruments described in the
preceding six paragraphs would be subject to mandatory repurchase.

     In October 1997, three of the Company's Egyptian subsidiaries entered into
a secured, revolving credit facility with a group of banks. The facility
originally provided for total commitments of $250 million, with availability
determined by a borrowing base formula predicated upon those subsidiaries' oil
and gas reserve quantities, forecast rates of production, and future oil and gas
prices. The borrowing base is $151 million at December 31, 2000 and will be
redetermined semi-annually. In May 2000, the commitments under the facility
began a scheduled reduction by set increments every six months. The commitments
at December 31, 2000, totaled $212.5 million. The facility is presently secured
solely by assets associated with the Company's Qarun and Khalda concessions and
shares of stock of the Company's subsidiaries holding those concessions, with
provisions that will permit the inclusion of other of the Company's Egyptian
subsidiaries as borrowers with security interests on such subsidiaries' assets
and shares of stock. Interest is assessed at LIBOR plus a margin of .375
percent, which increased to .625 percent on January 3, 2001. A quarterly fee of
 .375 percent is payable on the available portion of the commitments, while a
quarterly fee of .1875 percent is payable on the difference between the
borrowing base and the total amount of commitments under the facility. The
facility is scheduled to mature on January 3, 2003.

     In December 1997, Apache Finance Pty Ltd (Apache Finance Australia), the
Company's Australian finance subsidiary, issued $170 million principal amount,
$168.7 million net of discount, of senior unsecured 6.5-percent notes due
December 15, 2007.

     In March 1999, Apache Finance Australia issued $100 million principal
amount, $99.3 million net of discount, of senior unsecured 7-percent notes due
March 15, 2009.

     In December 1999, Apache Finance Canada Corporation (Apache Finance
Canada), the Company's Canadian finance subsidiary, issued $300 million
principal amount, $296.9 million net of discount, of senior unsecured
7.75-percent notes due December 15, 2029.

     The Apache Finance Australia and Apache Finance Canada notes are
irrevocably and unconditionally guaranteed by Apache. Under certain conditions
related to changes in relevant tax laws, Apache Finance Australia and Apache
Finance Canada have the right to redeem the notes prior to maturity. In the case
of the 6.5-percent notes, Apache Finance Australia may also redeem the notes at
its option subject to an adjustment to keep investors whole. Also, upon certain
changes in control, these notes would be subject to mandatory repurchase.

     In December 2000, Moody's Investor Service, Inc. upgraded the Company's
senior unsecured long-term debt rating from Baa1 to A3 and confirmed its
commercial paper rating of Prime-2. In January 2001, Standard & Poor's Corporate
Ratings Group upgraded the Company's senior unsecured long-term debt rating from
BBB+ to A- and confirmed its commercial paper rating of A-2. The Fitch, Inc.
senior unsecured long-term debt rating of A- and commercial paper rating of F-2
also were confirmed.

     As of December 31, 2000 and 1999, the Company had approximately $15.4
million and $16.8 million, respectively, of unamortized costs associated with
its various debt obligations. These costs are reflected as deferred charges in
the accompanying consolidated balance sheet and are being amortized over the
life of the related debt.

     The indentures for the notes described above place certain restrictions on
the Company, including limits on Apache's ability to incur debt secured by
certain liens and its ability to enter into certain sale and leaseback
transactions.

                                       F-16
<PAGE>   55
                      APACHE CORPORATION AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

  Aggregate Maturities of Debt

<TABLE>
<CAPTION>
                                                         (IN THOUSANDS)
<S>                                                      <C>
2001...................................................    $   25,000
2002...................................................       149,926
2003...................................................       605,100
2004...................................................            --
2005...................................................            --
Thereafter.............................................     1,438,232
                                                           ----------
                                                           $2,218,258
                                                           ==========
</TABLE>

5. INCOME TAXES

     Income (loss) before income taxes is composed of the following:

<TABLE>
<CAPTION>
                                                      FOR THE YEAR ENDED DECEMBER 31,
                                                     ---------------------------------
                                                        2000        1999       1998
                                                     ----------   --------   ---------
                                                              (IN THOUSANDS)
<S>                                                  <C>          <C>        <C>
United States......................................  $  654,136   $143,680   $(241,861)
International......................................     549,545    200,893      54,298
                                                     ----------   --------   ---------
          Total....................................  $1,203,681   $344,573   $(187,563)
                                                     ==========   ========   =========
</TABLE>

     The total provision (benefit) for income taxes consists of the following:

<TABLE>
<CAPTION>
                                                        FOR THE YEAR ENDED DECEMBER 31,
                                                       ---------------------------------
                                                         2000        1999        1998
                                                       ---------   ---------   ---------
                                                                (IN THOUSANDS)
<S>                                                    <C>         <C>         <C>
Current taxes:
  Federal............................................  $ 12,000    $     --    $     --
  Foreign............................................   120,383      66,224      23,680
Deferred taxes.......................................   350,703      77,494     (81,856)
                                                       --------    --------    --------
          Total......................................  $483,086    $143,718    $(58,176)
                                                       ========    ========    ========
</TABLE>

     The deferred income tax provision shown above includes amounts related to
the compensation component of non-qualified stock options exercised in each year
for which the benefit was credited directly to shareholders' equity.

     A reconciliation of the federal statutory income tax amounts to the
effective amounts is shown below:

<TABLE>
<CAPTION>
                                                        FOR THE YEAR ENDED DECEMBER 31,
                                                       ---------------------------------
                                                         2000        1999        1998
                                                       ---------   ---------   ---------
                                                                (IN THOUSANDS)
<S>                                                    <C>         <C>         <C>
Statutory income tax.................................  $421,288    $120,601    $(65,647)
State income tax, less federal benefit...............     9,650       8,482          38
Taxation of foreign operations.......................    52,354      24,519       8,710
Decrease in Australia corporate income tax rate......        --     (16,979)         --
U.S. taxes on repatriation of Egyptian earnings......        --       7,136          --
All other, net.......................................      (206)        (41)     (1,277)
                                                       --------    --------    --------
                                                       $483,086    $143,718    $(58,176)
                                                       ========    ========    ========
</TABLE>

                                       F-17
<PAGE>   56
                      APACHE CORPORATION AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

     The net deferred tax liability is comprised of the following:

<TABLE>
<CAPTION>
                                                                  DECEMBER 31,
                                                              --------------------
                                                                2000       1999
                                                              --------   ---------
                                                                 (IN THOUSANDS)
<S>                                                           <C>        <C>
Deferred tax assets:
  Deferred income...........................................  $ (1,799)  $  (6,238)
  Federal net operating loss carryforwards..................        --     (81,047)
  State net operating loss carryforwards....................    (9,481)     (8,989)
  Statutory depletion carryforwards.........................    (4,075)     (4,075)
  Alternative minimum tax credits...........................   (13,118)     (9,141)
  Accrued expenses and liabilities..........................    (8,413)     (6,970)
  Other.....................................................    (6,201)    (13,332)
                                                              --------   ---------
          Total deferred tax assets.........................   (43,087)   (129,792)
Valuation allowance.........................................     1,649       1,704
                                                              --------   ---------
     Net deferred tax assets................................   (41,438)   (128,088)
                                                              --------   ---------
Deferred tax liabilities:
  Depreciation, depletion and amortization..................   738,132     485,428
  Other.....................................................     3,139       2,984
                                                              --------   ---------
          Total deferred tax liabilities....................   741,271     488,412
                                                              --------   ---------
Net deferred income tax liability...........................  $699,833   $ 360,324
                                                              ========   =========
</TABLE>

     U.S. deferred taxes have not been provided on foreign earnings totaling
$904.3 million, which are permanently reinvested abroad. Presently, limited
foreign tax credits are available to reduce the U.S. taxes on such amounts if
repatriated.

     At December 31, 2000, the Company had U.S. and foreign statutory depletion
carryforwards totaling $10.9 million that can be carried forward indefinitely.
The Company has alternative minimum tax (AMT) credit carryforwards of $13.1
million that can be carried forward indefinitely, but which can be used only to
reduce regular tax liabilities in excess of AMT liabilities. The Company has
investment and other tax credit carryforwards of $1.6 million that most likely
will be utilized or expire in 2001, which have been fully reserved through a
valuation allowance.

6. ADVANCES FROM GAS PURCHASERS

     In July 1998, Apache received $71.8 million from a purchaser as an advance
payment for future natural gas deliveries ranging from 6,726 MMBtu per day to
24,669 MMBtu per day, for a total of 45,330,949 MMBtu, over a ten-year period
commencing August 1998. As a condition of the arrangement with the purchaser,
Apache entered into three gas price swap contracts with a third party under
which Apache became a fixed price payor for identical volumes at prices ranging
from $2.34 per MMBtu to $2.56 per MMBtu. In addition, the purchaser pays Apache
a monthly fee of $.08 per MMBtu on the contracted volumes. The net result of
these related transactions is that gas delivered to the purchaser is reported as
revenue at prevailing spot prices with Apache realizing a premium associated
with the monthly fee paid by the purchaser.

     In August 1997, Apache received $115.2 million from a purchaser as an
advance payment for future natural gas deliveries of 20,000 MMBtu per day over a
ten-year period commencing September 1997. As a condition of the arrangement
with the purchaser, Apache entered into two gas price swap contracts with a
third party under which Apache became a fixed price payor for identical volumes
at average prices starting at $2.19 per MMBtu in 1997 and escalating to $2.59
per MMBtu in 2007. In addition, the purchaser pays

                                       F-18
<PAGE>   57
                      APACHE CORPORATION AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

Apache a monthly fee of $.07 per MMBtu on the contracted volumes. The net result
of these related transactions is that gas delivered to the purchaser is reported
as revenue at prevailing spot prices with Apache realizing a premium associated
with the monthly fee paid by the purchaser.

     In December 1994, Apache received $67.4 million from a purchaser as an
advance payment for future natural gas deliveries of 20,000 MMBtu per day over a
six-year period commencing January 1995. As a condition of the arrangement with
the purchaser, Apache entered into a gas price swap contract with a third party
under which Apache became a fixed price payor for identical volumes at prices
starting at $1.81 per MMBtu in 1995 and escalating at $.10 per MMBtu per year
through 2000. The net result of these related transactions is that gas delivered
to the purchaser is reported as revenue at prevailing spot prices with Apache
realizing a $.05 per MMBtu premium associated with a monthly fee paid by the
purchaser. This agreement expired at the end of 2000.

     Contracted volumes relating to these arrangements are included in the
Company's supplemental oil and gas disclosures.

     These advance payments have been classified as advances from gas purchasers
in the accompanying consolidated balance sheet and are being reduced as gas is
delivered to the purchasers under the terms of the contracts. At December 31,
2000 and 1999, advances of $153.1 and $181.0 million, respectively, were
outstanding. Gas volumes delivered to the purchaser are reported as revenue at
prices used to calculate the amount advanced, before imputed interest, plus or
minus amounts paid or received by Apache applicable to the price swap
agreements. Interest expense is recorded based on a rate of 8 percent on the
1998 and 1997 advances, and 9.5 percent on the 1994 advances.

7. CAPITAL STOCK

  Common Stock Outstanding

<TABLE>
<CAPTION>
                                                            2000          1999          1998
                                                         -----------   -----------   ----------
<S>                                                      <C>           <C>           <C>
Balance, beginning of year.............................  113,996,464    97,769,122   93,304,541
Treasury shares acquired, net..........................     (459,479)     (385,334)    (846,968)
Shares issued for:
  Public offering(1)...................................    9,200,000    14,950,000           --
  Acquisition of Shell Offshore properties.............           --     1,000,000           --
  Conversion of 6-percent convertible debentures.......           --            --    5,070,914
  Acquisition of oil and gas property interests........           --            --      176,836
  Dividend reinvestment plan...........................           --        12,436           --
  401(k) savings plan..................................           --        24,988       10,477
  Stock option plans...................................      897,763       625,252       53,322
                                                         -----------   -----------   ----------
Balance, end of year...................................  123,634,748   113,996,464   97,769,122
                                                         ===========   ===========   ==========
</TABLE>

- ---------------

(1) In August 2000, Apache completed a public offering of 9.2 million shares of
    common stock, including 1.2 million shares for the underwriters'
    over-allotment option, for net proceeds of $433.9 million. In May 1999,
    Apache completed a public offering of approximately 15.0 million shares of
    common stock for net proceeds of $444.3 million.

                                       F-19
<PAGE>   58
                      APACHE CORPORATION AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

     Net Income (Loss) Per Common Share -- A reconciliation of the components of
basic and diluted net income (loss) per common share for the years ended
December 31, 2000, 1999 and 1998 is presented in the table below:

<TABLE>
<CAPTION>
                                             2000                             1999                             1998
                                ------------------------------   ------------------------------   ------------------------------
                                 INCOME    SHARES    PER SHARE    INCOME    SHARES    PER SHARE    INCOME     SHARES   PER SHARE
                                --------   -------   ---------   --------   -------   ---------   ---------   ------   ---------
                                                            (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
<S>                             <C>        <C>       <C>         <C>        <C>       <C>         <C>         <C>      <C>
Basic:
  Income (loss) attributable
    to common stock...........  $693,068   117,979     $5.87     $186,406   107,936     $1.73     $(131,391)  98,066    $(1.34)
                                                       =====                            =====                           ======
Effect of Dilutive Securities:
  Stock options and other.....        --     1,046                     --       418                      --       --
  Series C Preferred Stock....    14,307     5,691                     --        --                      --       --
                                --------   -------               --------   -------               ---------   ------
Diluted:
  Income (loss) attributable
    to common stock, including
    assumed conversions.......  $707,375   124,716     $5.67     $186,406   108,354     $1.72     $(131,391)  98,066    $(1.34)
                                ========   =======     =====     ========   =======     =====     =========   ======    ======
</TABLE>

     The effect of the Series C Preferred Stock was not included in the
computation of diluted net income per common share during 1999 because to do so
would have been antidilutive.

     Stock Option Plans -- At December 31, 2000, officers and certain key
employees had been granted options to purchase the Company's common stock under
employee stock option plans adopted in 1990, 1995, 1998 and 2000 (collectively,
the Stock Option Plans). Under the Stock Option Plans, the exercise price of
each option equals the market price of Apache's common stock on the date of
grant. Options generally become exercisable ratably over a four-year period and
expire after 10 years.

     On October 31, 1996, the Company established the 1996 Performance Stock
Option Plan (the Performance Plan) for substantially all full-time employees,
excluding officers and certain key employees. Under the Performance Plan, the
exercise price of each option equals the market price of Apache common stock on
the date of grant. All options become exercisable after nine and one-half years
and expire ten years from the date of grant; however, exercisability would have
been accelerated if certain share price goals had been attained before January
1, 2000. These share price goals were not attained and no acceleration will
occur. Under the terms of the Performance Plan, no grants were made after
December 31, 1998.

                                       F-20
<PAGE>   59
                      APACHE CORPORATION AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

     A summary of the status of the plans described above as of December 31,
2000, 1999 and 1998, and changes during the years then ended, is presented in
the table and narrative below (shares in thousands):

<TABLE>
<CAPTION>
                                                2000                1999                1998
                                          -----------------   -----------------   -----------------
                                                   WEIGHTED            WEIGHTED            WEIGHTED
                                          SHARES   AVERAGE    SHARES   AVERAGE    SHARES   AVERAGE
                                          UNDER    EXERCISE   UNDER    EXERCISE   UNDER    EXERCISE
                                          OPTION    PRICE     OPTION    PRICE     OPTION    PRICE
                                          ------   --------   ------   --------   ------   --------
<S>                                       <C>      <C>        <C>      <C>        <C>      <C>
Outstanding, beginning of year..........   4,524    $33.49     4,421    $32.15     3,629    $32.20
Granted.................................     884     49.66       849     37.41     1,243     32.53
Exercised...............................    (884)    31.46      (533)    28.53       (20)    26.68
Forfeited...............................    (184)    38.02      (213)    33.31      (431)    33.98
                                          ------              ------              ------
Outstanding, end of year(1).............   4,340     37.04     4,524     33.49     4,421     32.15
                                          ======              ======              ======
Exercisable, end of year................   1,398     32.60     1,392     30.64     1,223     28.86
                                          ======              ======              ======
Available for grant, end of year........   1,478               1,276               2,006
                                          ======              ======              ======
Weighted average fair value of options
  granted during the year(2)............  $20.85              $13.93              $10.87
                                          ======              ======              ======
</TABLE>

     The following table summarizes information about stock options covered by
the plans described above that are outstanding at December 31, 2000 (shares in
thousands):

<TABLE>
<CAPTION>
                                                   OPTIONS OUTSTANDING             OPTIONS EXERCISABLE
                                           ------------------------------------   ----------------------
                                            NUMBER OF     WEIGHTED                 NUMBER OF
                                             SHARES        AVERAGE     WEIGHTED     SHARES      WEIGHTED
                                              UNDER       REMAINING    AVERAGE       UNDER      AVERAGE
                                           OUTSTANDING   CONTRACTUAL   EXERCISE   EXERCISABLE   EXERCISE
RANGE OF EXERCISE PRICES                     OPTIONS        LIFE        PRICE       OPTIONS      PRICE
- ------------------------                   -----------   -----------   --------   -----------   --------
<S>                                        <C>           <C>           <C>        <C>           <C>
$13.750 -- $29.875.......................       676         5.80        $27.20         488       $27.25
 30.250 --  37.875.......................     2,349         6.69         34.41         748        33.76
 40.000 --  49.125.......................     1,231         8.96         46.19         162        43.35
 53.188 --  63.630.......................        84         9.56         55.68          --           --
                                              -----                                  -----
                                              4,340                                  1,398
                                              =====                                  =====
</TABLE>

- ---------------

(1) Excludes 142,500, 219,000 and 449,625 shares as of December 31, 2000, 1999
    and 1998, respectively, issuable under stock options assumed by Apache in
    connection with the 1996 merger with The Phoenix Resource Companies, Inc.

(2) The fair value of each option is estimated as of the date of grant using the
    Black-Scholes option-pricing model with the following weighted-average
    assumptions used for grants in 2000, 1999 and 1998, respectively: (i)
    risk-free interest rates of 6.74, 5.65 and 5.46 percent; (ii) expected lives
    of five years for the Stock Option Plans, and 2.5 years for the Performance
    Plan; (iii) expected volatility of 37.42, 33.87 and 31.17 percent, and (iv)
    expected dividend yields of .57, .75 and .88 percent.

                                       F-21
<PAGE>   60
                      APACHE CORPORATION AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

     In October 2000, the Company adopted the 2000 Share Appreciation Plan (the
Share Appreciation Plan) under which grants were made to the Company's officers
and substantially all full-time employees. The Share Appreciation Plan provides
for conditional grants of up to an aggregate of 3.5 million shares of Apache
common stock, based on attainment of one or more of three share price goals (the
Share Price Goals) and/or a separate production goal (the Production Goal).
Generally, shares will be issued in three installments over 24 months after
achievement of each goal. When and if the goals are achieved, the Company will
recognize compensation expense over the 24-month vesting period equal to the
value of the stock on the date the particular goal is achieved. The shares of
Apache common stock contingently issuable under the Share Appreciation Plan will
be excluded from the computation of income per common share until the stated
goals are met.

     The Share Price Goals are based on achieving a share price of $100, $120
and $180 per share before January 1, 2005. A summary of the number of shares
contingently issuable under the Share Price Goals as of December 31, 2000 is
presented in the table below (shares in thousands):

<TABLE>
<CAPTION>
                                                       SHARES SUBJECT TO
                                                       CONDITIONAL GRANTS
                                                       ------------------
<S>                                                    <C>
Outstanding, beginning of year......................             --
Granted.............................................          2,496
                                                             ------
Outstanding, end of year(1).........................          2,496
                                                             ======
Exercisable, end of year............................             --
                                                             ======
Weighted average fair value of conditional grants --
  Share Price Goals(2)..............................         $40.26
                                                             ======
</TABLE>

     The Production Goal will be attained if and when the Company's average
daily production equals or exceeds 1.54 barrels of oil equivalent per diluted
share (calculated on an annualized basis) during any fiscal quarter ending
before January 1, 2005. Such level of production is approximately twice the
Company's level of production at the time the Share Appreciation Plan was
adopted. Shares issuable in connection with the Production Goal will be a number
of shares of the Company's common stock equal to (a) 37.5 percent, 75 percent or
150 percent of a participant's annual base salary (at the time of attainment),
as applicable, divided by (b) the average daily per share closing price of the
Company's common stock for the fiscal quarter during which the Production Goal
is attained.

- ---------------

(1) Represents shares issuable upon attainment of $100, $120 and $180 per share
    price goals of 542,000, 1,353,000 and 601,000 shares, respectively.

(2) The fair value of each Share Price Goal conditional grant is estimated as of
    the date of grant using a Monte Carlo simulation with the following
    weighted-average assumptions used for grants in 2000: (i) risk-free interest
    rate of 5.95 percent; (ii) expected volatility of 44.69 percent; and (iii)
    expected dividend yield of .44 percent.

                                       F-22
<PAGE>   61
                      APACHE CORPORATION AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

     The Company accounts for its stock-based compensation plans under APB
Opinion No. 25 and related interpretations, under which, generally, no
compensation cost has been recognized for the Stock Option Plans, the
Performance Plan, or the Share Appreciation Plan. If compensation costs for
these plans had been determined in accordance with SFAS No. 123, the Company's
net income and net income per common share would approximate the following pro
forma amounts:

<TABLE>
<CAPTION>
                                                         2000          1999           1998
                                                      -----------   -----------   ------------
                                                      (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
<S>                                                   <C>           <C>           <C>
Income (Loss) Attributable to Common Stock:
  As reported......................................    $693,068      $186,406      $(131,391)
  Pro forma........................................     679,856       177,518       (141,306)
Net Income (Loss) per Common Share:
  Basic:
     As reported...................................    $   5.87      $   1.73      $   (1.34)
     Pro forma.....................................        5.76          1.64          (1.44)
  Diluted:
     As reported...................................    $   5.67      $   1.72      $   (1.34)
     Pro forma.....................................        5.58          1.64          (1.44)
</TABLE>

     The pro forma amounts shown above may not be representative of future
results, as the SFAS No. 123 method of accounting has not been applied to
options granted prior to January 1, 1995.

     In December 1998, the Company entered into a conditional stock grant
agreement with an executive of the Company which would award up to 100,000
shares of the Company's common stock in five annual installments. Each
installment has a five-year vesting period, 40 percent of the conditional grants
will be paid in cash at the market value of the stock on the date of payment and
the balance (60,000 shares) will be issued in Apache common stock.

  Preferred Stock

     The Company has five million shares of no par preferred stock authorized,
of which 25,000 shares have been "designated" as Series A Junior Participating
Preferred Stock (the Series A Preferred Stock), 100,000 shares have been
designated as the 5.68 percent Series B Cumulative Preferred Stock (the Series B
Preferred Stock) and 140,000 shares have been designated as Automatically
Convertible Equity Securities, Conversion Preferred Stock, Series C (the Series
C Preferred Stock). The shares of Series A Preferred Stock are authorized for
issuance pursuant to certain rights that trade with Apache common stock
outstanding and are reserved for issuance upon the exercise of the Rights as
defined and discussed below.

     Rights to Purchase Series A Preferred Stock -- In December 1995, the
Company declared a dividend of one right (a Right) for each share of Apache
common stock outstanding on January 31, 1996. Each Right entitles the registered
holder to purchase from the Company one ten-thousandth (1/10,000) of a share of
Series A Preferred Stock at a price of $100 per one ten-thousandth of a share,
subject to adjustment. The Rights are exercisable 10 calendar days following a
public announcement that certain persons or groups have acquired 20 percent or
more of the outstanding shares of Apache common stock or 10 business days
following commencement of an offer for 30 percent or more of the outstanding
shares of Apache common stock. In addition, if a person or group becomes the
beneficial owner of 20 percent or more of Apache's outstanding common stock
(flip in event), each Right will become exercisable for shares of Apache's
common stock at 50 percent of the then market price of the common stock. If a 20
percent shareholder of Apache acquires Apache, by merger or otherwise, in a
transaction where Apache does not survive or in which Apache's common stock is
changed or exchanged (flip over event), the Rights become exercisable for shares
of the common stock of the company acquiring Apache at 50 percent of the then
market price for Apache common

                                       F-23
<PAGE>   62
                      APACHE CORPORATION AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

stock. Any Rights that are or were beneficially owned by a person who has
acquired 20 percent or more of the outstanding shares of Apache common stock and
who engages in certain transactions or realizes the benefits of certain
transactions with the Company will become void. The Company may redeem the
Rights at $.01 per Right at any time until 10 business days after public
announcement of a flip in event. The Rights will expire on January 31, 2006,
unless earlier redeemed by the Company. Unless the Rights have been previously
redeemed, all shares of Apache common stock issued by the Company after January
31, 1996 will include Rights. Unless and until the Rights become exercisable,
they will be transferred with and only with the shares of Apache common stock.

     Series B Preferred Stock -- In August 1998, Apache issued 100,000 shares
($100 million) of Series B Preferred Stock in the form of one million depositary
shares, each representing one-tenth (1/10) of a share of Series B Preferred
Stock, for net proceeds of $98.4 million. The Series B Preferred Stock has no
stated maturity, is not subject to a sinking fund and is not convertible into
Apache common stock or any other securities of the Company. Apache has the
option to redeem the Series B Preferred Stock at $1,000 per share on or after
August 25, 2008. Holders of the shares are entitled to receive cumulative cash
dividends at an annual rate of $5.68 per depositary share when, and if, declared
by Apache's board of directors.

     Series C Preferred Stock -- In May 1999, Apache issued 140,000 shares ($217
million) of Series C Preferred Stock in the form of seven million depositary
shares each representing one-fiftieth (1/50) of a share of Series C Preferred
Stock, for net proceeds of $210.5 million. The Series C Preferred Stock is not
subject to a sinking fund or mandatory redemption. On May 15, 2002, each
depositary share will automatically convert, subject to adjustments, into not
more than one share and not less than 0.8197 of a share of Apache common stock,
depending on the market price of Apache common stock at that time.

     In 2000, Apache bought back 75,900 depository shares at an average price of
$34.42 per share. The excess of the purchase price to reacquire the depository
shares over the original issuance price is reflected as a preferred stock
dividend in the accompanying statement of consolidated operations.

     At any time prior to May 15, 2002, holders of the depositary shares may
elect to convert each of their shares, subject to adjustments, into not less
than 0.8197 of a share of Apache common stock (5,675,685 common shares). Holders
of the shares are entitled to receive cumulative cash dividends at an annual
rate of $2.015 per depositary share when, and if, declared by Apache's board of
directors.

     Comprehensive Income -- Components of accumulated other comprehensive
income (loss) consist of the following (in thousands):

<TABLE>
<CAPTION>
                                                        FOR THE YEAR ENDED DECEMBER 31,
                                                        --------------------------------
                                                          2000        1999       1998
                                                        ---------   --------   ---------
<S>                                                     <C>         <C>        <C>
Currency translation adjustments......................  $(40,050)   $(8,661)   $(33,204)
Unrealized gain (loss) on marketable securities.......      (182)       215          --
                                                        --------    -------    --------
Accumulated other comprehensive income (loss).........  $(40,232)   $(8,446)   $(33,204)
                                                        ========    =======    ========
</TABLE>

     The unrealized gain (loss) on marketable securities at December 31, 2000
and 1999 is net of income tax expense (benefit) of $(94,000) and $129,000,
respectively. The currency translation adjustments are not adjusted for income
taxes as they relate to an indefinite investment in a non-U.S. subsidiary.

                                       F-24
<PAGE>   63
                      APACHE CORPORATION AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

8. NON-CASH INVESTING AND FINANCING ACTIVITIES

     A summary of non-cash investing and financing activities is presented
below:

     In January 2000, the Company acquired producing properties formerly owned
by a subsidiary of Repsol for cash and the assumption of certain non-cash
liabilities. The accompanying financial statements include the amounts detailed
in Note 2.

     In August 2000, the Company acquired an LLC owned by subsidiaries of
Occidental for cash and future payments as discussed in Note 2. The accompanying
financial statements included a discounted liability of $36.8 million as of the
acquisition date for such payments.

     In June 1999, the Company acquired certain oil and gas interests from
British-Borneo for cash and the assumption of certain liabilities. The
accompanying financial statements include the amounts detailed in Note 2.

     In May 1999, the Company issued one million shares of Apache common stock
to Shell Offshore in connection with the transaction discussed in Note 2.

     In December 1998 and January 1999, the Company acquired certain oil and gas
interests from subsidiaries of Novus for cash and the assumption of certain
liabilities. The accompanying financial statements include the amounts detailed
in Note 2.

     In June 1998, Apache formed a strategic alliance with Cinergy Corp.
(Cinergy) and sold its 57 percent interest in ProEnergy for 771,258 shares of
Cinergy common stock valued at $26.5 million.

     In March 1998, Apache acquired certain oil and gas property interests for
approximately 177,000 shares of Apache common stock valued at $6.1 million.

     In January 1998, approximately 90 percent, or $155.6 million principal
amount, of the Company's 6-percent convertible subordinated debentures was
converted into approximately 5.1 million shares of Apache common stock at a
conversion price of $30.68 per share.

  Supplemental Disclosure of Cash Flow Information:

<TABLE>
<CAPTION>
                                                              FOR THE YEAR ENDED DECEMBER 31,
                                                              -------------------------------
                                                                2000        1999       1998
                                                              ---------   --------   --------
                                                                      (IN THOUSANDS)
<S>                                                           <C>         <C>        <C>
Cash paid during the year for:
  Interest, net of amounts capitalized......................  $108,292    $70,691    $71,968
  Income and other taxes, net of refunds....................   122,716     66,224     23,680
</TABLE>

                                       F-25
<PAGE>   64
                      APACHE CORPORATION AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

9. FINANCIAL INSTRUMENTS AND OFF-BALANCE-SHEET RISK

     The following table presents the carrying amounts and estimated fair values
of the Company's financial instruments at December 31, 2000 and 1999.

<TABLE>
<CAPTION>
                                                            2000                  1999
                                                     -------------------   -------------------
                                                     CARRYING     FAIR     CARRYING     FAIR
                                                      AMOUNT     VALUE      AMOUNT     VALUE
                                                     --------   --------   --------   --------
                                                                  (IN THOUSANDS)
<S>                                                  <C>        <C>        <C>        <C>
Cash and cash equivalents..........................  $ 37,173   $ 37,173   $ 13,171   $ 13,171
Long-term debt:
  Bank debt........................................   145,000    145,000    312,590    312,590
  Commercial paper.................................   510,100    510,100         --         --
  7.95-percent notes...............................   178,577    191,088    178,560    176,760
  7.625-percent debentures.........................   149,175    155,580    149,175    136,628
  7.625-percent notes..............................   149,085    154,800    149,063    144,075
  7-percent notes..................................   148,339    145,905    148,291    135,975
  7.375-percent debentures.........................   147,998    148,755    147,993    136,755
  9.25-percent notes...............................    99,926    104,060     99,882    104,170
  7.7-percent notes................................    99,650    103,280     99,646     95,470
  Money market lines of credit.....................    25,000     25,000      6,158      6,158
  Apache Finance Australia 6.5-percent notes.......   169,023    168,946    168,916    156,689
  Apache Finance Australia 7-percent notes.........    99,425    102,842     99,376     95,238
  DEKALB 9.875-percent notes.......................        --         --     29,225     29,655
  Apache Finance Canada 7.75-percent notes.........   296,960    302,610    296,933    283,380
Hedging financial instruments:
  Commodity price swaps:
     -- Natural gas (pay fixed)(1).................        --    121,453         --     11,073
     -- Natural gas (receive fixed)................        --     (3,924)        --     (1,547)
     -- Oil (receive fixed)........................        --    (26,948)        --     (9,369)
Commodity collars:
     -- Natural gas................................        --    (94,323)       183        846
     -- Oil........................................        --      8,966        425     (4,890)
</TABLE>

- ---------------

(1) The fair value of natural gas price swaps at December 31, 2000 and 1999
    reflects fixed-to-floating price swaps where there is an offsetting physical
    position valued at a negative $121.5 million. See Commodity Price Hedges
    below.

                                       F-26
<PAGE>   65
                      APACHE CORPORATION AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

     The following methods and assumptions were used to estimate the fair value
of the financial instruments summarized in the table above. The carrying values
of trade receivables and trade payables included in the accompanying
consolidated balance sheet approximated market value at December 31, 2000 and
1999.

     Cash and Cash Equivalents -- The carrying amounts approximated fair value
due to the short maturity of these instruments.

     Long-Term Debt -- The fair values of the 7.625-percent debentures and the
Apache Finance Australia 7-percent notes are based upon estimates provided to
the Company by independent investment banking firms. The fair values of all
other notes and debentures are based on the quoted market prices. The carrying
amount of the bank debt, commercial paper and money market lines of credit
approximated fair value because the interest rates are variable and reflective
of market rates.

     Commodity Price Hedges -- Apache periodically enters into commodity
derivative contracts and fixed-price physical contracts to manage its exposure
to oil and gas price volatility. Commodity derivatives contracts, which are
usually placed with major financial institutions that the Company believes are
minimal credit risks, may take the form of futures contracts, swaps or options.
The derivative contracts call for Apache to receive, or make, payments based
upon the differential between a fixed and a variable commodity price as
specified in the contract. As a result of these activities, Apache recognized
hedging losses of $42.1 million and $6.7 million in 2000 and 1999, respectively,
and hedging gains of $1.3 million in 1998. The hedging gains and losses are
included in oil and gas production revenues in the statement of consolidated
operations.

     The following table and note thereto cover the Company's pricing and
notional volumes on open commodity derivative contracts as of December 31, 2000:

<TABLE>
<CAPTION>
                                                      2001     2002     2003    2004    2005    THEREAFTER
                                                     ------   ------   ------   -----   -----   ----------
<S>                                                  <C>      <C>      <C>      <C>     <C>     <C>
Natural Gas Swap Positions:
  Pay fixed price -- January 2001 to July 2008
    (thousand MMBtu/d)(1).........................       30       30       30      30      32        31
  Average swap price, per MMBtu(1)................   $ 2.27   $ 2.31   $ 2.35   $2.39   $2.45     $2.53
Natural Gas Swap Positions:
  Receive fixed price -- January 2001 to June 2001
    (thousand MMBtu/d)............................        4       --       --      --      --        --
  Average swap price, per MMBtu...................   $ 1.58       --       --      --      --        --
Oil Swap Positions:
  Receive fixed price -- January 2001 to June 2002
    (Mbbl/d)......................................        9        8       --      --      --        --
  Average swap price, per bbl.....................   $18.82   $18.45       --      --      --        --
Oil Collar Positions:
  Volume -- January 2001 to December 2003
    (Mbbl/d)......................................       11       10        3      --      --        --
  Average ceiling price, per bbl..................   $30.96   $27.14   $27.40      --      --        --
  Average floor price, per bbl....................   $23.73   $22.11   $22.00      --      --        --
Gas Collar Positions:
  Volume -- January 2001 to December 2003
    (thousand MMBtu/d)............................      161      145       45      --      --        --
  Average ceiling price, per MMBtu................   $ 5.64   $ 4.67   $ 4.17      --      --        --
  Average floor price, per MMBtu..................   $ 3.03   $ 2.89   $ 2.59      --      --        --
</TABLE>

- ---------------

(1) The Company has various contracts to supply gas at fixed prices. In order to
    lock in a margin on a portion of the volumes, the Company is a fixed price
    payor on swap transactions. The average physical contract price ranges from
    $2.32 in 2001 to $2.56 in 2008. The fair value of these hedges was $121.5
    million at December 31, 2000, all of which is related to the arrangements
    discussed in Note 6.

                                       F-27
<PAGE>   66
                      APACHE CORPORATION AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

10. COMMITMENTS AND CONTINGENCIES

     Litigation -- The Company is involved in litigation and is subject to
governmental and regulatory controls arising in the ordinary course of business.
It is the opinion of the Company's management that all claims and litigation
involving the Company are not likely to have a material adverse effect on its
financial position or results of operations.

     Environmental -- Apache, as an owner and operator of oil and gas
properties, is subject to various federal, state, local and foreign country laws
and regulations relating to discharge of materials into, and protection of, the
environment. These laws and regulations may, among other things, impose
liability on the lessee under an oil and gas lease for the cost of pollution
clean-up resulting from operations and subject the lessee to liability for
pollution damages. Apache maintains insurance coverage, which it believes, is
customary in the industry, although it is not fully insured against all
environmental risks.

     As part of the Company's due diligence review for acquisitions, Apache
conducts an extensive environmental evaluation of purchased properties.
Depending on the extent of an identified environmental problem, the Company may
exclude a property from the acquisition, require the seller to remediate the
property to Apache's satisfaction, or agree to assume liability for remediation
of the property. As of December 31, 2000, Apache had a reserve for environmental
remediation of approximately $6.5 million. The Company is not aware of any
environmental claims existing as of December 31, 2000, which have not been
provided for or would otherwise have a material impact on its financial position
or results of operations. There can be no assurance, however, that current
regulatory requirements will not change, or past non-compliance with
environmental laws will not be discovered on the Company's properties.

     International Commitments -- The Company, through its subsidiaries, has
acquired or has been conditionally or unconditionally granted exploration rights
in Australia, Egypt, China and Poland. In order to comply with the contracts and
agreements granting these rights, the Company, through various wholly-owned
subsidiaries, is committed to expend approximately $103.5 million through 2004.

     Retirement and Deferred Compensation Plans -- The Company provides a 401(k)
savings plan for employees which allows participating employees to elect to
contribute up to 12 percent of their salaries, with Apache making matching
contributions up to a maximum of six percent of each employee's salary. In
addition, the Company annually contributes six percent of each participating
employee's compensation, as defined, to a money purchase retirement plan. The
401(k) plan and the money purchase retirement plan are subject to certain
annually-adjusted, government-mandated restrictions which limit the amount of
each employee's contributions.

     For certain eligible employees, the Company also provides a non-qualified
retirement/savings plan which allows the deferral of up to 50 percent of each
such employee's salary, and which accepts employee contributions and the
Company's matching contributions in excess of the above-referenced restrictions
on the 401(k) savings plan and money purchase retirement plan. Additionally,
Apache Energy Limited and Apache Canada Ltd. maintain separate retirement plans,
as required under the laws of Australia and Canada, respectively.

     Vesting in the Company's contributions to the 401(k) savings plan, the
money purchase retirement plan and the non-qualified retirement/savings plan
occurs at the rate of 20 percent per year. Total expenses under all plans were
$9.5 million, $7.8 million and $7.3 million for 2000, 1999 and 1998,
respectively. The unfunded liability for all plans has been accrued in the
consolidated balance sheet.

     China -- In June 2000, the Company's subsidiary, Apache China Corporation
LDC (Apache China), filed a lawsuit against PetroChina Company Limited
(PetroChina), China National Petroleum Corporation and China National Oil and
Gas Exploration and Development Corporation in connection with certain of the
Company's Chinese operations in the Zhao Dong Block of the Bohai Bay in China.
The Company filed

                                       F-28
<PAGE>   67
                      APACHE CORPORATION AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

seeking damages and injunctive relief to prevent the Chinese parties from
declaring that Apache and XCL-China, Ltd. had relinquished some of the Company's
Chinese exploratory acreage, and other claims. The lawsuit was filed in the U.S.
Bankruptcy Court in Opelousas, Louisiana, in connection with bankruptcy
proceedings of XCL-China, Ltd., a co-owner in the Zhao Dong Block. On June 30,
2000, Apache and PetroChina announced having reached agreement to resolve the
outstanding issues associated with development of the Zhao Dong Block. The
agreement called for PetroChina and the China National Petroleum Corporation to
obtain various governmental approvals including approval of the overall
development plan. By the middle of February 2001, all of the agreed actions had
occurred, including all of the required governmental approvals, and Apache
China's lawsuit was dismissed with prejudice. Apache and the other participants
in the Zhao Dong Block are preparing to begin the construction of production
facilities and development drilling in accordance with the approved overall
development plan.

     Lease Commitments -- The Company has leases for buildings, facilities and
equipment with varying expiration dates through 2008. Net rental expense was
$15.6 million, $11.5 million and $8.1 million for 2000, 1999 and 1998,
respectively.

     As of December 31, 2000, minimum rental commitments under long-term
operating leases, net of sublease rentals, and long-term pipeline transportation
commitments, ranging from one to 23 years, are as follows:

<TABLE>
<CAPTION>
                                                          NET MINIMUM
                                                          COMMITMENTS
                                                         --------------
                                                         (IN THOUSANDS)
<S>                                                      <C>
2001..................................................      $ 22,844
2002..................................................        23,700
2003..................................................        19,630
2004..................................................        16,956
2005..................................................        16,045
Thereafter............................................        62,922
                                                            --------
                                                            $162,097
                                                            ========
</TABLE>

11. TRANSACTIONS WITH RELATED PARTIES AND MAJOR CUSTOMERS

     Strategic Alliance with Cinergy Corp. -- In June 1998, Apache formed a
strategic alliance with Cinergy to market substantially all the Company's
natural gas production from North America and sold its 57 percent interest in
ProEnergy for 771,258 shares of Cinergy common stock subsequently sold for $26.1
million. ProEnergy, renamed Cinergy Marketing and Trading LLC, will continue to
market Apache's North American natural gas production for 10 years, with an
option to terminate after six years, under an amended and restated gas purchase
agreement effective July 1, 1998. During this period, Apache is generally
obligated to deliver most of its North American gas production to Cinergy and,
under certain circumstances, reimburse Cinergy if certain gas throughput
thresholds are not met. Accordingly, Apache recorded a deferred gain of $20.0
million, subject to adjustment, on the sale of ProEnergy that is being amortized
over six years.

     Related Parties -- F.H. Merelli, a member of the Company's board of
directors since July 1997, is chairman and chief executive officer of Key
Production Company, Inc. (Key). In the normal course of business, Key paid to
Apache approximately $2.7 million during 2000 for Key's proportionate share of
drilling and workover costs, mineral interests and routine expenses related to
392 oil and gas wells in which Key owns interests and for which Apache is the
operator. Key received approximately $9.9 million in 2000 for its proportionate
share of revenues from such interests, of which approximately $6.7 million was
paid directly to Key by Apache or related entities.

                                       F-29
<PAGE>   68
                      APACHE CORPORATION AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

     Major Purchasers -- In 2000, purchases by Cinergy and the Egyptian General
Petroleum Corporation (EGPC) accounted for 26 percent and 16 percent of the
Company's oil and gas production revenues, respectively. In 1999, purchases by
Cinergy and EGPC accounted for 29 percent and 21 percent of the Company's oil
and gas production revenues, respectively. In 1998, purchases by
Cinergy/ProEnergy and EGPC accounted for 38 percent and 17 percent of the
Company's oil and gas production revenues, respectively.

     Concentration of Credit Risk -- The Company's revenues are derived
principally from uncollateralized sales to customers in the oil and gas
industry; therefore, customers may be similarly affected by changes in economic
and other conditions within the industry. Apache has not experienced significant
credit losses on such sales. Sales of natural gas by Apache to Cinergy are
similarly uncollateralized.

12. BUSINESS SEGMENT INFORMATION

     Apache has five reportable segments which are primarily in the business of
crude oil and natural gas exploration and production. The accounting policies of
the segments are the same as those described in the summary of significant
accounting policies. The Company evaluates performance based on profit or loss
from oil and gas operations before income and expense items incidental to oil
and gas operations and income taxes. Apache's reportable segments are managed
separately because of their geographic locations. Financial information by
operating segment is presented below:

<TABLE>
<CAPTION>
                                                                                          OTHER
                                  UNITED STATES     CANADA      EGYPT     AUSTRALIA   INTERNATIONAL     TOTAL
                                  -------------   ----------   --------   ---------   -------------   ----------
                                                                  (IN THOUSANDS)
<S>                               <C>             <C>          <C>        <C>         <C>             <C>
2000
Oil and Gas Production
  Revenues......................   $1,374,941     $  331,503   $360,772   $223,543      $     --      $2,290,759
Operating Expenses:
  Depreciation, depletion and
     amortization...............      356,998         79,892     84,425     62,183            48         583,546
  Operating costs...............      216,001         39,559     28,328     30,536            --         314,424
                                   ----------     ----------   --------   --------      --------      ----------
Operating Income (Loss).........   $  801,942     $  212,052   $248,019   $130,824      $    (48)      1,392,789
                                   ==========     ==========   ========   ========      ========
Other Income (Expense):
  Equity in income of
     affiliates.................                                                                             862
  Other revenues................                                                                          (7,717)
  Administrative, selling and
     other......................                                                                         (75,615)
  Financing costs, net..........                                                                        (106,638)
                                                                                                      ----------
Income Before Income Taxes......                                                                      $1,203,681
                                                                                                      ==========
Total Long-Lived Assets.........   $3,643,439     $1,378,639   $854,531   $783,884      $151,969      $6,812,462
                                   ==========     ==========   ========   ========      ========      ==========
Total Assets....................   $4,022,749     $1,463,306   $965,733   $856,575      $173,587      $7,481,950
                                   ==========     ==========   ========   ========      ========      ==========
Additions to Long-Lived
  Assets........................   $1,461,479     $  649,804   $ 93,083   $117,248      $ 20,865      $2,342,479
                                   ==========     ==========   ========   ========      ========      ==========
</TABLE>

                                       F-30
<PAGE>   69
                      APACHE CORPORATION AND SUBSIDIARIES

           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)

<TABLE>
<CAPTION>
                                                                                          OTHER
                                  UNITED STATES     CANADA      EGYPT     AUSTRALIA   INTERNATIONAL     TOTAL
                                  -------------   ----------   --------   ---------   -------------   ----------
                                                                  (IN THOUSANDS)
<S>                               <C>             <C>          <C>        <C>         <C>             <C>
1999
Oil and Gas Production
  Revenues......................   $  700,649     $   86,901   $235,935   $118,524      $  1,937      $1,143,946
Operating Expenses:
  Depreciation, depletion and
     amortization...............      290,771         34,560     74,736     41,716         1,061         442,844
  Operating costs...............      150,505         19,962     26,444     25,216           849         222,976
                                   ----------     ----------   --------   --------      --------      ----------
Operating Income................   $  259,373     $   32,379   $134,755   $ 51,592      $     27         478,126
                                   ==========     ==========   ========   ========      ========
Other Income (Expense):
  Equity in income of
     affiliates.................                                                                             153
  Other revenues................                                                                           2,454
  Administrative, selling and
     other......................                                                                         (53,894)
  Financing costs, net..........                                                                         (82,266)
                                                                                                      ----------
Income Before Income Taxes......                                                                      $  344,573
                                                                                                      ==========
Total Long-Lived Assets.........   $2,548,413     $  861,829   $845,873   $728,592      $131,151      $5,115,858
                                   ==========     ==========   ========   ========      ========      ==========
Total Assets....................   $2,760,163     $  894,592   $908,502   $782,520      $156,766      $5,502,543
                                   ==========     ==========   ========   ========      ========      ==========
Additions to Long-Lived
  Assets........................   $1,053,285     $  577,455   $111,534   $175,848      $ 28,286      $1,946,408
                                   ==========     ==========   ========   ========      ========      ==========

1998
Oil and Gas Production
  Revenues......................   $  498,388     $   63,620   $129,123   $ 70,057      $     --      $  761,188
Operating Expenses:
  Depreciation, depletion and
     amortization...............
     Recurring..................      256,507         30,514     59,825     35,961            --         382,807
     Additional.................      243,178             --         --         --            --         243,178
  Operating costs...............      153,490         17,216     23,436     16,638            --         210,780
                                   ----------     ----------   --------   --------      --------      ----------
Operating Income (Loss).........   $ (154,787)    $   15,890   $ 45,862   $ 17,458      $     --         (75,577)
                                   ==========     ==========   ========   ========      ========
Other Income (Expense):
  Equity in loss of
     affiliates.................                                                                          (1,558)
  Other revenues................                                                                             840
  Administrative, selling and
     other......................                                                                         (40,731)
  Financing costs, net..........                                                                         (70,537)
                                                                                                      ----------
Loss Before Income Taxes........                                                                      $ (187,563)
                                                                                                      ==========
Total Long-Lived Assets.........   $1,892,020     $  290,341   $809,075   $592,979      $143,126      $3,727,541
                                   ==========     ==========   ========   ========      ========      ==========
Total Assets....................   $2,046,628     $  305,238   $853,561   $633,981      $156,654      $3,996,062
                                   ==========     ==========   ========   ========      ========      ==========
Additions to Long-Lived
  Assets........................   $  274,395     $   73,327   $219,162   $145,037      $ 70,251      $  782,172
                                   ==========     ==========   ========   ========      ========      ==========
</TABLE>

                                       F-31
<PAGE>   70

                      APACHE CORPORATION AND SUBSIDIARIES

                      SUPPLEMENTAL OIL AND GAS DISCLOSURES
                                  (UNAUDITED)

     Oil and Gas Operations -- The following table sets forth revenue and direct
cost information relating to the Company's oil and gas exploration and
production activities. Apache has no long-term agreements to purchase oil or gas
production from foreign governments or authorities.

<TABLE>
<CAPTION>
                                     UNITED                                         IVORY
                                     STATES        CANADA     EGYPT     AUSTRALIA   COAST      TOTAL
                                  -------------   --------   --------   ---------   ------   ----------
                                                             (IN THOUSANDS)
<S>                               <C>             <C>        <C>        <C>         <C>      <C>
2000
Oil and gas production
  revenues......................   $1,374,941     $331,503   $360,772   $223,543    $   --   $2,290,759
                                   ----------     --------   --------   --------    ------   ----------
Operating costs:
  Depreciation, depletion and
     amortization...............      345,624       76,286     84,302     61,358        --      567,570
  Lease operating expenses......      167,985       34,487     28,328     24,451        --      255,251
  Production taxes..............       46,509           --         --      6,086        --       52,595
  Income tax....................      305,559       98,489    119,108     44,760        --      567,916
                                   ----------     --------   --------   --------    ------   ----------
                                      865,677      209,262    231,738    136,655        --    1,443,332
                                   ----------     --------   --------   --------    ------   ----------
Results of operations...........   $  509,264     $122,241   $129,034   $ 86,888    $   --   $  847,427
                                   ==========     ========   ========   ========    ======   ==========
Amortization rate per boe(1)....   $     6.16     $   5.53   $   5.46   $   4.42    $   --   $     5.75
                                   ==========     ========   ========   ========    ======   ==========
1999
Oil and gas production
  revenues......................   $  700,649     $ 86,901   $235,935   $118,524    $1,937   $1,143,946
                                   ----------     --------   --------   --------    ------   ----------
Operating costs:
  Depreciation, depletion and
     amortization...............      280,033       33,671     74,695     40,952       309      429,660
  Lease operating expenses......      124,867       18,095     26,444     20,321       849      190,576
  Production taxes..............       23,212           --         --      4,895        --       28,107
  Income tax....................      102,201       15,677     64,702     18,848       273      201,701
                                   ----------     --------   --------   --------    ------   ----------
                                      530,313       67,443    165,841     85,016     1,431      850,044
                                   ----------     --------   --------   --------    ------   ----------
Results of operations...........   $  170,336     $ 19,458   $ 70,094   $ 33,508    $  506   $  293,902
                                   ==========     ========   ========   ========    ======   ==========
Amortization rate per boe(1)....   $     6.10     $   4.54   $   5.25   $   4.12    $ 1.72   $     5.57
                                   ==========     ========   ========   ========    ======   ==========
1998
Oil and gas production
  revenues......................   $  498,388     $ 63,620   $129,123   $ 70,057    $   --   $  761,188
                                   ----------     --------   --------   --------    ------   ----------
Operating costs:
  Depreciation, depletion and
     amortization
       Recurring................      246,994       29,967     59,825     35,219        --      372,005
       Additional...............      243,178           --         --         --        --      243,178
  Lease operating expenses......      128,811       16,419     23,436     13,472        --      182,138
  Production taxes..............       21,503           --         --      3,166        --       24,669
  Income tax (benefit)..........      (53,287)       7,686     22,014      6,552        --      (17,035)
                                   ----------     --------   --------   --------    ------   ----------
                                      587,199       54,072    105,275     58,409        --      804,955
                                   ----------     --------   --------   --------    ------   ----------
Results of operations...........   $  (88,811)    $  9,548   $ 23,848   $ 11,648    $   --   $  (43,767)
                                   ==========     ========   ========   ========    ======   ==========
Amortization rate per boe(1)....   $     6.21     $   4.03   $   5.22   $   4.86    $   --   $     5.66
                                   ==========     ========   ========   ========    ======   ==========
</TABLE>

- ---------------

(1) Amortization rate per boe reflects only depreciation, depletion and
    amortization (DD&A) of capitalized costs of proved oil and gas properties
    (and excludes the additional DD&A recorded in 1998).

                                       F-32
<PAGE>   71
                      APACHE CORPORATION AND SUBSIDIARIES

              SUPPLEMENTAL OIL AND GAS DISCLOSURES -- (CONTINUED)
                                  (UNAUDITED)

     Costs Not Being Amortized -- The following table sets forth a summary of
oil and gas property costs not being amortized at December 31, 2000, by the year
in which such costs were incurred:

<TABLE>
<CAPTION>
                                                                                        1997
                                           TOTAL       2000       1999       1998     AND PRIOR
                                          --------   --------   --------   --------   ---------
                                                             (IN THOUSANDS)
<S>                                       <C>        <C>        <C>        <C>        <C>
Property acquisition costs..............  $665,567   $189,481   $211,609   $ 55,619   $208,858
Exploration and development.............   311,924     96,536     43,416     78,639     93,333
                                          --------   --------   --------   --------   --------
          Total.........................  $977,491   $286,017   $255,025   $134,258   $302,191
                                          ========   ========   ========   ========   ========
</TABLE>

     Capitalized Costs Incurred -- The following table sets forth the
capitalized costs incurred in oil and gas producing activities:

<TABLE>
<CAPTION>
                                                                                                  OTHER
                              UNITED STATES    CANADA     EGYPT     AUSTRALIA   IVORY COAST   INTERNATIONAL     TOTAL
                              -------------   --------   --------   ---------   -----------   -------------   ----------
                                                                    (IN THOUSANDS)
<S>                           <C>             <C>        <C>        <C>         <C>           <C>             <C>
2000
Acquisition of proved
  properties(1).............   $  922,523     $401,904   $     --   $     --     $     --       $     --      $1,324,427
Acquisition of unproved
  properties................       10,712       11,548         --         --           --             --          22,260
Exploration.................       26,045       16,331     51,819     40,917           --         18,077         153,189
Development.................      459,046      107,748     33,130     32,918           --             --         632,842
Capitalized interest........       27,185       10,063     12,194      9,908           --          2,650          62,000
Property sales..............      (10,853)     (15,418)        --         --           --             --         (26,271)
                               ----------     --------   --------   --------     --------       --------      ----------
                               $1,434,658     $532,176   $ 97,143   $ 83,743     $     --       $ 20,727      $2,168,447
                               ==========     ========   ========   ========     ========       ========      ==========
1999
Acquisition of proved
  properties(1).............   $  801,157     $503,771   $     --   $ 86,278     $     --       $     --      $1,391,206
Acquisition of unproved
  properties................        9,044        5,464         --         --           --             --          14,508
Exploration.................       29,207       14,218     24,071     26,866           --         17,097         111,459
Development.................      179,225       26,009     35,737     34,110        2,553          1,738         279,372
Capitalized interest........       22,031        3,176      7,904      8,289          619          3,703          45,722
Property sales..............     (106,122)      (3,872)        --         --      (45,232)            --        (155,226)
                               ----------     --------   --------   --------     --------       --------      ----------
                               $  934,542     $548,766   $ 67,712   $155,543     $(42,060)      $ 22,538      $1,687,041
                               ==========     ========   ========   ========     ========       ========      ==========
1998
Acquisition of proved
  properties(1).............   $   13,240     $  1,034   $  2,249   $ 41,608     $    271       $     --      $   58,402
Acquisition of unproved
  properties................       20,819        5,458         --         --           --             --          26,277
Exploration.................       27,482       20,054     65,696     39,578           --         30,563         183,373
Development.................      174,449       44,245     39,735     40,521       23,527          9,293         331,770
Capitalized interest........       15,390        1,710     19,226      6,354          829          5,770          49,279
Property sales..............     (123,861)      (4,943)        --         --           --        (12,645)       (141,449)
                               ----------     --------   --------   --------     --------       --------      ----------
                               $  127,519     $ 67,558   $126,906   $128,061     $ 24,627       $ 32,981      $  507,652
                               ==========     ========   ========   ========     ========       ========      ==========
</TABLE>

- ---------------

(1) Acquisition of proved properties includes unevaluated costs of $125.1
    million, $256.4 million and $15.7 million for transactions completed in
    2000, 1999 and 1998, respectively.

                                       F-33
<PAGE>   72
                      APACHE CORPORATION AND SUBSIDIARIES

              SUPPLEMENTAL OIL AND GAS DISCLOSURES -- (CONTINUED)
                                  (UNAUDITED)

     Capitalized Costs -- The following table sets forth the capitalized costs
and associated accumulated depreciation, depletion and amortization, including
impairments, relating to the Company's oil and gas production, exploration and
development activities:

<TABLE>
<CAPTION>
                                                                                           OTHER
                                  UNITED STATES     CANADA       EGYPT     AUSTRALIA   INTERNATIONAL      TOTAL
                                  -------------   ----------   ---------   ---------   -------------   -----------
                                                                   (IN THOUSANDS)
<S>                               <C>             <C>          <C>         <C>         <C>             <C>
2000
Proved properties...............   $ 6,641,162    $1,414,598   $ 639,938   $ 677,999     $ 50,225      $ 9,423,922
Unproved properties.............       296,319       168,228     215,919     146,108      150,917          977,491
                                   -----------    ----------   ---------   ---------     --------      -----------
                                     6,937,481     1,582,826     855,857     824,107      201,142       10,401,413
Accumulated DD&A................    (3,342,791)     (326,621)   (245,741)   (185,543)     (50,225)      (4,150,921)
                                   -----------    ----------   ---------   ---------     --------      -----------
                                   $ 3,594,690    $1,256,205   $ 610,116   $ 638,564     $150,917      $ 6,250,492
                                   ===========    ==========   =========   =========     ========      ===========

1999
Proved properties...............   $ 5,291,247    $  939,979   $ 543,132   $ 585,204     $ 50,225      $ 7,409,787
Unproved properties.............       211,576       156,600     215,582     155,160      130,190          869,108
                                   -----------    ----------   ---------   ---------     --------      -----------
                                     5,502,823     1,096,579     758,714     740,364      180,415        8,278,895
Accumulated DD&A................    (2,997,167)     (260,573)   (174,431)   (131,296)     (50,225)      (3,613,692)
                                   -----------    ----------   ---------   ---------     --------      -----------
                                   $ 2,505,656    $  836,006   $ 584,283   $ 609,068     $130,190      $ 4,665,203
                                   ===========    ==========   =========   =========     ========      ===========
</TABLE>

                                       F-34
<PAGE>   73

               APACHE CORPORATION AND SUBSIDIARIES

       SUPPLEMENTAL OIL AND GAS DISCLOSURES -- (CONTINUED)
                           (UNAUDITED)

     Oil and Gas Reserve Information -- Proved oil and gas reserve quantities
are based on estimates prepared by the Company's engineers in accordance with
guidelines established by the Securities and Exchange Commission (SEC). The
Company's estimates of proved reserve quantities of its U.S., Canadian and
international properties are subject to review by Ryder Scott Company, L.P.
Petroleum Consultants, independent petroleum engineers.

     There are numerous uncertainties inherent in estimating quantities of
proved reserves and projecting future rates of production and timing of
development expenditures. The following reserve data represents estimates only
and should not be construed as being exact.
<TABLE>
<CAPTION>
                                           CRUDE OIL, CONDENSATE AND NATURAL GAS LIQUIDS
                                    ------------------------------------------------------------

                                                       (THOUSANDS OF BARRELS)
                                     UNITED                                     IVORY
                                     STATES     CANADA     EGYPT    AUSTRALIA   COAST     TOTAL
                                    --------   --------   -------   ---------   ------   -------
<S>                                 <C>        <C>        <C>       <C>         <C>      <C>
PROVED DEVELOPED RESERVES:
 December 31, 1997................   133,035     11,313    42,714    15,690        393   203,145
 December 31, 1998................   107,306     10,962    33,705    24,674      1,352   177,999
 December 31, 1999................   186,962     50,401    30,719    33,887         --   301,969
 December 31, 2000................   232,361     66,484    26,028    29,124         --   353,997

TOTAL PROVED RESERVES:
Balance December 31,1997..........   167,617     11,328    54,696    39,744        393   273,778
 Extensions, discoveries and other
   additions......................    36,655      1,917     5,906    11,765        930    57,173
 Purchases of minerals in-place...     4,768         59        --     1,214         --     6,041
 Revisions of previous
   estimates......................   (40,868)      (155)    4,739    (3,121)        29   (39,376)
 Production.......................   (13,262)      (988)  (10,188)   (3,225)        --   (27,663)
 Sales of properties..............   (18,726)      (219)       --        --         --   (18,945)
                                    --------   --------   -------    ------     ------   -------
Balance December 31,1998..........   136,184     11,942    55,153    46,377      1,352   251,008
 Extensions, discoveries and other
   additions......................    23,370      1,114     5,327     4,056         --    33,867
 Purchases of minerals in-place...    76,493     70,640        --     4,686         --   151,819
 Revisions of previous
   estimates......................    27,615        772    (9,815)    3,225        (30)   21,767
 Production.......................   (17,836)    (1,344)  (11,589)   (3,878)       (13)  (34,660)
 Sales of properties..............    (7,169)       (81)       --        --     (1,309)   (8,559)
                                    --------   --------   -------    ------     ------   -------
Balance December 31,1999..........   238,657     83,043    39,076    54,466         --   415,242
 Extensions, discoveries and other
   additions......................    36,681      6,589     9,168     6,074         --    58,512
 Purchases of minerals in-place...    60,519     29,514        --        --         --    90,033
 Revisions of previous
   estimates......................     2,655        159     1,012       429         --     4,255
 Production.......................   (22,894)    (5,828)  (10,155)   (5,691)        --   (44,568)
 Sales of properties..............      (914)       (87)       --        --         --    (1,001)
                                    --------   --------   -------    ------     ------   -------
Balance December 31, 2000.........   314,704    113,390    39,101    55,278         --   522,473
                                    ========   ========   =======    ======     ======   =======

<CAPTION>
                                                              NATURAL GAS                                 TOTAL
                                    ----------------------------------------------------------------   -----------
                                                        (MILLIONS OF CUBIC FEET)                        (THOUSAND
                                                                                                       BARRELS OF
                                     UNITED                                       IVORY                    OIL
                                     STATES      CANADA     EGYPT    AUSTRALIA    COAST      TOTAL     EQUIVALENT)
                                    ---------   --------   -------   ---------   -------   ---------   -----------
<S>                                 <C>         <C>        <C>       <C>         <C>       <C>         <C>
PROVED DEVELOPED RESERVES:
 December 31, 1997................  1,009,080    326,237     8,825    183,962     26,208   1,554,312      462,197
 December 31, 1998................    869,464    322,576     4,790    173,764     79,515   1,450,109      419,684
 December 31, 1999................  1,004,844    397,704   106,830    364,369         --   1,873,747      614,260
 December 31, 2000................  1,579,865    660,334    93,205    331,390         --   2,664,794      798,129

TOTAL PROVED RESERVES:
Balance December 31,1997..........  1,131,749    328,208   144,246    241,410     26,208   1,871,821      585,748
 Extensions, discoveries and other
   additions......................    146,112     60,660    31,201    267,533     50,406     555,912      149,825
 Purchases of minerals in-place...     25,188        599        --     27,373         --      53,160       14,901
 Revisions of previous
   estimates......................    (43,778)    (7,812)   19,550        (76)     2,901     (29,215)     (44,245)
 Production.......................   (157,701)   (38,643)     (567)   (18,478)        --    (215,389)     (63,561)
 Sales of properties..............    (52,995)   (11,068)       --         --         --     (64,063)     (29,622)
                                    ---------   --------   -------    -------    -------   ---------   ----------
Balance December 31,1998..........  1,048,575    331,944   194,430    517,762     79,515   2,172,226      613,046
 Extensions, discoveries and other
   additions......................     34,804     13,015    11,725     10,837         --      70,381       45,597
 Purchases of minerals in-place...    393,716     99,535        --     72,770         --     566,021      246,156
 Revisions of previous
   estimates......................     27,221      1,835   (44,297)        40     (4,296)    (19,497)      18,518
 Production.......................   (168,428)   (36,424)   (5,809)   (27,820)    (1,003)   (239,484)     (74,574)
 Sales of properties..............   (121,001)    (2,852)       --         --    (74,216)   (198,069)     (41,571)
                                    ---------   --------   -------    -------    -------   ---------   ----------
Balance December 31,1999..........  1,214,887    407,053   156,049    573,589         --   2,351,578      807,172
 Extensions, discoveries and other
   additions......................    154,489     94,792    32,967     55,195         --     337,443      114,752
 Purchases of minerals in-place...    736,079    246,360        --         --         --     982,439      253,773
 Revisions of previous
   estimates......................     32,414     (8,397)    2,966         (6)        --      26,977        8,751
 Production.......................   (199,362)   (47,758)  (17,371)   (39,489)        --    (303,980)     (95,231)
 Sales of properties..............    (10,454)      (333)       --         --         --     (10,787)      (2,799)
                                    ---------   --------   -------    -------    -------   ---------   ----------
Balance December 31, 2000.........  1,928,053    691,717   174,611    589,289         --   3,383,670    1,086,418
                                    =========   ========   =======    =======    =======   =========   ==========
</TABLE>

                                      F-35
<PAGE>   74

                      APACHE CORPORATION AND SUBSIDIARIES

              SUPPLEMENTAL OIL AND GAS DISCLOSURES -- (CONTINUED)
                                  (UNAUDITED)

     Future Net Cash Flows -- Future cash inflows are based on year-end oil and
gas prices except in those instances where future natural gas or oil sales are
covered by physical contract terms providing for higher or lower amounts.
Operating costs, production and ad valorem taxes and future development costs
are based on current costs with no escalation.

     The following table sets forth unaudited information concerning future net
cash flows for oil and gas reserves, net of income tax expense. Income tax
expense has been computed using expected future tax rates and giving effect to
tax deductions and credits available, under current laws, and which relate to
oil and gas producing activities. This information does not purport to present
the fair market value of the Company's oil and gas assets, but does present a
standardized disclosure concerning possible future net cash flows that would
result under the assumptions used.

<TABLE>
<CAPTION>
                                      UNITED                                               IVORY
                                      STATES       CANADA(1)      EGYPT      AUSTRALIA     COAST        TOTAL
                                    -----------   -----------   ----------   ----------   --------   ------------
                                                                   (IN THOUSANDS)
<S>                                 <C>           <C>           <C>          <C>          <C>        <C>
2000
Cash inflows......................  $26,652,689   $ 8,865,939   $1,430,178   $2,133,073   $     --   $ 39,081,879
Production and development
  costs...........................   (5,549,309)   (1,343,831)    (298,711)    (651,151)        --     (7,843,002)
Income tax expense................   (7,132,257)   (2,194,511)    (375,112)    (385,953)        --    (10,087,833)
                                    -----------   -----------   ----------   ----------   --------   ------------
Net cash flows....................   13,971,123     5,327,597      756,355    1,095,969         --     21,151,044
10 percent discount rate..........   (6,148,566)   (2,478,102)    (238,985)    (337,741)        --     (9,203,394)
                                    -----------   -----------   ----------   ----------   --------   ------------
Discounted future net cash
  flows(2)........................  $ 7,822,557   $ 2,849,495   $  517,370   $  758,228   $     --   $ 11,947,650
                                    ===========   ===========   ==========   ==========   ========   ============
1999
Cash inflows......................  $ 8,559,045   $ 2,635,191   $1,529,575   $2,227,818   $     --   $ 14,951,629
Production and development
  costs...........................   (2,820,412)     (845,373)    (254,287)    (639,441)        --     (4,559,513)
Income tax expense................   (1,527,499)     (427,930)    (428,608)    (310,472)        --     (2,694,509)
                                    -----------   -----------   ----------   ----------   --------   ------------
Net cash flows....................    4,211,134     1,361,888      846,680    1,277,905         --      7,697,607
10 percent discount rate..........   (1,815,462)     (667,085)    (252,379)    (387,320)        --     (3,122,246)
                                    -----------   -----------   ----------   ----------   --------   ------------
Discounted future net cash
  flows(2)........................  $ 2,395,672   $   694,803   $  594,301   $  890,585   $     --   $  4,575,361
                                    ===========   ===========   ==========   ==========   ========   ============
1998
Cash inflows......................  $ 3,523,294   $   763,349   $  877,861   $1,208,235   $129,965   $  6,502,704
Production and development
  costs...........................   (1,496,382)     (240,166)    (263,199)    (479,627)   (28,718)    (2,508,092)
Income tax expense................     (327,470)     (127,405)    (166,751)    (156,409)   (29,211)      (807,246)
                                    -----------   -----------   ----------   ----------   --------   ------------
Net cash flows....................    1,699,442       395,778      447,911      572,199     72,036      3,187,366
10 percent discount rate..........     (675,035)     (165,220)    (127,723)    (209,448)   (45,889)    (1,223,315)
                                    -----------   -----------   ----------   ----------   --------   ------------
Discounted future net cash
  flows(2)........................  $ 1,024,407   $   230,558   $  320,188   $  362,751   $ 26,147   $  1,964,051
                                    ===========   ===========   ==========   ==========   ========   ============
</TABLE>

- ---------------

(1) Included in cash inflows is approximately $10.9 million, $30.8 million and
    $27.9 million ($3.3 million, $9.7 million and $9.1 million after discount at
    10 percent per annum) for 2000, 1999 and 1998, respectively, of Canadian
    provincial tax credits expected to be realized beyond the date at which the
    legislation, under its provisions, could be repealed.

(2) Estimated future net cash flows before income tax expense, discounted at 10
    percent per annum, totaled approximately $17.7 billion, $6.1 billion and
    $2.4 billion as of December 31, 2000, 1999 and 1998, respectively.
                                       F-36
<PAGE>   75
                      APACHE CORPORATION AND SUBSIDIARIES

              SUPPLEMENTAL OIL AND GAS DISCLOSURES -- (CONTINUED)
                                  (UNAUDITED)

     The following table sets forth the principal sources of change in the
discounted future net cash flows:

<TABLE>
<CAPTION>
                                                    FOR THE YEAR ENDED DECEMBER 31,
                                                ---------------------------------------
                                                   2000          1999          1998
                                                -----------   -----------   -----------
                                                            (IN THOUSANDS)
<S>                                             <C>           <C>           <C>
Sales, net of production costs................  $(2,064,471)  $  (923,068)  $  (551,457)
Net change in prices and production costs.....    4,693,840     2,619,118    (1,253,213)
Discoveries and improved recovery, net of
  related costs...............................    2,703,195       282,523       620,153
Change in future development costs............       67,442        82,853       251,638
Revision of quantities........................      135,669        90,221      (149,859)
Purchases of minerals in-place................    5,796,278     1,488,905        52,785
Accretion of discount.........................      606,801       239,589       327,262
Change in income taxes........................   (4,284,904)   (1,060,814)      277,518
Sales of properties...........................      (25,585)     (136,453)     (132,337)
Change in production rates and other..........     (255,976)      (71,564)      (41,701)
                                                -----------   -----------   -----------
                                                $ 7,372,289   $ 2,611,310   $  (599,211)
                                                ===========   ===========   ===========
</TABLE>

     Impact of Pricing -- The estimates of cash flows and reserve quantities
shown above are based on year-end oil and gas prices, except in those cases
where future natural gas or oil sales are covered by physical contracts at
specified prices. Price fluctuations are largely due to supply and demand
perceptions for natural gas and volatility in oil prices.

     Under the full cost accounting rules of the SEC, the Company reviews the
carrying value of its proved oil and gas properties each quarter on a
country-by-country basis. Under these rules, capitalized costs of proved oil and
gas properties, net of accumulated DD&A and deferred income taxes, may not
exceed the present value of estimated future net cash flows from proved oil and
gas reserves, discounted at 10 percent, plus the lower of cost or fair value of
unproved properties included in the costs being amortized, net of related tax
effects. These rules generally require pricing future oil and gas production at
the unescalated oil and gas prices at the end of each fiscal quarter and require
a write-down if the "ceiling" is exceeded. Given the volatility of oil and gas
prices, it is reasonably possible that the Company's estimate of discounted
future net cash flows from proved oil and gas reserves could change in the near
term. If oil and gas prices decline significantly, even if only for a short
period of time, it is possible that write-downs of oil and gas properties could
occur in the future.

                                       F-37
<PAGE>   76

                      APACHE CORPORATION AND SUBSIDIARIES

                     SUPPLEMENTAL QUARTERLY FINANCIAL DATA
                                  (UNAUDITED)

<TABLE>
<CAPTION>
                                             FIRST(1)   SECOND(1)   THIRD(1)    FOURTH      TOTAL
                                             --------   ---------   --------   --------   ----------
                                                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
<S>                                          <C>        <C>         <C>        <C>        <C>
2000
Revenues...................................  $448,191   $486,413    $618,513   $730,787   $2,283,904
Expenses, net..............................   331,195    342,181     416,265    473,668    1,563,309
                                             --------   --------    --------   --------   ----------
Income before change in accounting
  principle................................   116,996    144,232     202,248    257,119      720,595
Cumulative effect of change in accounting
  principle, net of income tax.............    (7,539)        --          --         --       (7,539)
                                             --------   --------    --------   --------   ----------
Net income.................................  $109,457   $144,232    $202,248   $257,119   $  713,056
                                             ========   ========    ========   ========   ==========
Income attributable to common stock........  $104,193   $139,324    $197,340   $252,211   $  693,068
                                             ========   ========    ========   ========   ==========
Basic net income per common shares(2):
  Before change in accounting principle....  $    .98   $   1.22    $   1.64   $   2.04   $     5.94
                                             ========   ========    ========   ========   ==========
  After change in accounting principle.....  $    .92   $   1.22    $   1.64   $   2.04   $     5.87
                                             ========   ========    ========   ========   ==========
Diluted net income per common share(2):
  Before change in accounting principle....  $    .96   $   1.18    $   1.58   $   1.96   $     5.73
                                             ========   ========    ========   ========   ==========
  After change in accounting principle.....  $    .90   $   1.18    $   1.58   $   1.96   $     5.67
                                             ========   ========    ========   ========   ==========
1999
Revenues...................................  $163,422   $246,418    $340,821   $395,892   $1,146,553
Expenses, net..............................   165,590    213,650     268,043    298,415      945,698
                                             --------   --------    --------   --------   ----------
Net income (loss)..........................  $ (2,168)  $ 32,768    $ 72,778   $ 97,477   $  200,855
                                             ========   ========    ========   ========   ==========
Income (loss) attributable to common
  stock....................................  $ (3,588)  $ 29,632    $ 67,831   $ 92,531   $  186,406
                                             ========   ========    ========   ========   ==========
Net income (loss) per common share(2):
  Basic....................................  $   (.04)  $    .28    $    .59   $    .81   $     1.73
                                             ========   ========    ========   ========   ==========
  Diluted..................................  $   (.04)  $    .28    $    .59   $    .80   $     1.72
                                             ========   ========    ========   ========   ==========
</TABLE>

- ---------------

(1) Prior quarters for 2000 have been restated to reflect a change in accounting
    principle, which was effective as of January 1, 2000 (see Note 1 to the
    consolidated financial statements).

(2) The sum of the individual quarterly net income (loss) per common share
    amounts may not agree with year-to-date net income (loss) per common share
    as each quarterly computation is based on the weighted average number of
    common shares outstanding during that period. In addition, certain
    potentially dilutive securities were not included in certain of the
    quarterly computations of diluted net income (loss) per common share because
    to do so would have been antidilutive.
                                       F-38
<PAGE>   77

BOARD OF DIRECTORS

FREDERICK M. BOHEN(3)(5)
Former Executive Vice President and
Chief Operating Officer
The Rockefeller University

G. STEVEN FARRIS
President and Chief Operating Officer
Apache Corporation

RANDOLPH M. FERLIC, M.D.(1)(2)(4)
Founder and Former President,
Surgical Services of the Great Plains, P.C.

EUGENE C. FIEDOREK(2)
Private Investor, Former Managing Director,
EnCap Investments L.C.

A. D. FRAZIER, JR.(3)(5)
President and Chief Executive Officer
Chicago Stock Exchange, Inc.

JOHN A. KOCUR(1)(3)(4)
Attorney at Law; Former Vice Chairman
of the Board,
Apache Corporation

GEORGE D. LAWRENCE JR.(1)(3)
Private Investor; Former Chief Executive Officer,
The Phoenix Resource Companies, Inc.

MARY RALPH LOWE(3)(4)(5)
President and Chief Executive Officer,
Maralo, LLC

F. H. MERELLI(1)(2)
Chairman of the Board and Chief Executive Officer,
Key Production Company, Inc.

RODMAN D. PATTON(2)
Former Managing Director,
Merrill Lynch Energy Group

CHARLES J. PITMAN(4)
Former Regional President -- Middle East/
Caspian/Egypt/India,
BP Amoco plc, and Sole Member,
Shaker Mountain Energy Associates, LLC

RAYMOND PLANK(1)(4)
Chairman of the Board and Chief Executive Officer
Apache Corporation

OFFICERS

RAYMOND PLANK
Chairman of the Board and Chief Executive Officer

G. STEVEN FARRIS
President and Chief Operating Officer

MICHAEL S. BAHORICH
Executive Vice President -- Exploration and
Production Technology

H. CRAIG CLARK
Executive Vice President -- U.S. Operations

JOHN A. CRUM
Executive Vice President -- Eurasia and New Ventures

ROGER B. PLANK
Executive Vice President and Chief Financial Officer

LISA A. STEWART
Executive Vice President --
Business Development and E&P Services

ZURAB S. KOBIASHVILI
Senior Vice President and General Counsel

JEFFREY M. BENDER
Vice President -- Human Resources

MATTHEW W. DUNDREA
Vice President and Treasurer

ROBERT J. DYE
Vice President -- Investor Relations

ERIC L. HARRY
Vice President and Associate General Counsel

ANTHONY R. LENTINI, JR.
Vice President -- Public and International Affairs

THOMAS L. MITCHELL
Vice President and Controller

CHERI L. PEPER
Corporate Secretary

- ---------------

(1) Executive Committee

(2) Audit Committee

(3) Management, Development & Compensation Committee

(4) Nominating Committee

(5) Stock Option Plan Committee
<PAGE>   78

SHAREHOLDER INFORMATION

STOCK DATA

<TABLE>
<CAPTION>
                                                DIVIDENDS
                           PRICE RANGE          PER SHARE*
                       -------------------   ----------------
                         HIGH       LOW      DECLARED   PAID
2000                   --------   --------   --------   -----
<S>                    <C>        <C>        <C>        <C>
First Quarter          $51.5000   $32.1250    $0.07     $0.07
Second Quarter         $61.5000   $44.0000       --     $0.07
Third Quarter          $67.6875   $46.3750    $0.14        --
Fourth Quarter         $74.1875   $51.5000       --     $0.14
1999
First Quarter          $28.5625   $17.6250    $0.07     $0.07
Second Quarter         $39.8750   $25.0625    $0.07     $0.07
Third Quarter          $49.9375   $37.0000    $0.07     $0.07
Fourth Quarter         $44.0000   $30.0000    $0.07     $0.07
</TABLE>

* The Company paid dividends of $0.28 per share in 2000, of which $0.21 was
declared in 2000 and $0.07 was declared in the fourth quarter of 1999, as a
result of changing its dividend payment schedule during 2000 from a quarterly
basis to an annual basis.

The Company has paid cash dividends on its common stock for 34 consecutive years
through December 31, 2000. Absent significant events, the Company expects to
maintain the current dividend level on its common stock. During 2000, the
Company changed the dividend payment schedule on its common stock from a
quarterly basis to an annual basis. Future dividend payments will depend upon
the Company's level of earnings, financial requirements and other relevant
factors. Apache common stock is listed on the New York and Chicago stock
exchanges (symbol APA). At December 31, 2000, the company's shares of common
stock outstanding were held by approximately 10,000 shareholders of record and
50,000 beneficial owners. Also listed on the New York Stock Exchange are:

- - the company's 9.25% notes, due 2002
  (symbol APA 02)
- - the company's $2.015 depositary shares
  (symbol APAPrC)
- - Apache Finance Canada's 7.75% notes, due 2029 (symbol APA 29)

CORPORATE OFFICES
One Post Oak Central
2000 Post Oak Boulevard
Suite 100
Houston, Texas 77056-4400
(713) 296-6000

INDEPENDENT PUBLIC ACCOUNTANTS
Arthur Andersen LLP
711 Louisiana
Suite 1300
Houston, Texas 77002

STOCK TRANSFER AGENT AND REGISTRAR
Wells Fargo Bank Minnesota, N.A.
(formerly known as Norwest Bank Minnesota, N.A.)
161 North Concord Exchange
P.O. Box 738
South St. Paul, Minnesota 55075
(651) 450-4064 or (800) 468-9716

Communications concerning the transfer of shares, lost certificates, dividend
checks, duplicate mailings or change of address should be directed to the stock
transfer agent.

DIVIDEND REINVESTMENT PLAN
Shareholders of record may invest their dividends automatically in additional
shares of Apache common stock at the market price. Participants may also invest
up to an additional $5,000 in Apache shares each quarter through this service.
All bank service fees and brokerage commissions on purchases are paid by Apache.
A prospectus describing the terms of the Plan and an authorization form may be
obtained from the Company's stock transfer agent, Wells Fargo Bank Minnesota,
N.A.

ANNUAL MEETING
Apache will hold its annual meeting of shareholders on Thursday, May 3, 2001, at
10 a.m. in the Ballroom, Doubletree Hotel at Post Oak, 2001 Post Oak Boulevard,
Houston, Texas. Apache plans to web cast the annual meeting live; connect
through the Apache web site: http://www.apachecorp.com

STOCK HELD IN "STREET NAME"
The Company maintains a direct mailing list to ensure that shareholders with
stock held in brokerage accounts receive information on a timely basis.
Shareholders wanting to be added to this list should direct their requests to
Apache's Public and International Affairs Department, 2000 Post Oak Boulevard,
Suite 100, Houston, Texas, 77056-4400, by calling (713) 296-6157 or by e-mail to
requests@apachecorp.com.

FORM 10-K REQUEST
Shareholders and other persons interested in obtaining, without cost, a copy of
the Company's Form 10-K filed with the Securities and Exchange Commission may do
so by writing to Cheri L. Peper, Corporate Secretary, 2000 Post Oak Boulevard,
Suite 100, Houston, Texas, 77056-4400.

INVESTOR RELATIONS
Shareholders, brokers, securities analysts or portfolio managers seeking
information about the Company are welcome to contact Robert J. Dye, Vice
President of Investor Relations, at (713) 296-6662.

Members of the news media and others seeking information about the Company
should contact Apache's Public and International Affairs Department at (713)
296-6107.

WEB SITE:  http://www.apachecorp.com
<PAGE>   79

                               INDEX TO EXHIBITS

<TABLE>
<CAPTION>
EXHIBIT
NO.                                              DESCRIPTION
- -------                                          -----------
<C>                      <S>
          2.1            -- Purchase and Sale Agreement by and between Texaco
                            Exploration and Production Inc., as seller, and
                            Registrant, as buyer, dated December 22, 1994
                            (incorporated by reference to Exhibit 99.3 to
                            Registrant's Current Report on Form 8-K, dated November
                            29, 1994, SEC File No. 1- 4300).
          2.2            -- Amended and Restated Agreement and Plan of Merger among
                            Registrant, XPX Acquisitions, Inc and DEKALB Energy
                            Company, dated December 21, 1994 (incorporated by
                            reference to Exhibit 2.1 to Amendment No. 3 to
                            Registrant's Registration Statement on Form S-4,
                            Registration No. 33-57321, filed April 14, 1995).
          2.3            -- Agreement and Plan of Merger among Registrant, YPY
                            Acquisitions, Inc. and The Phoenix Resource Companies,
                            Inc., dated March 27, 1996 (incorporated by reference to
                            Exhibit 2.1 to Registrant's Registration Statement on
                            Form S-4, Registration No. 333-02305, filed April 5,
                            1996).
          3.1            -- Restated Certificate of Incorporation of Registrant,
                            dated December 16, 1999, as filed with the Secretary of
                            State of Delaware on December 17, 1999 (incorporated by
                            reference to Exhibit 99.1 to Registrant's Current Report
                            on Form 8-K, dated December 17, 1999, SEC File No.
                            1-4300).
          3.2            -- Bylaws of Registrant, as amended May 4, 2000
                            (incorporated by reference to Exhibit 3.1 to Registrant's
                            Quarterly Report on Form 10-Q for the quarter ended March
                            31, 2000, SEC File No. 1-4300).
          4.1            -- Form of Certificate for Registrant's Common Stock
                            (incorporated by reference to Exhibit 4.1 to Registrant's
                            Annual Report on Form 10-K for year ended December 31,
                            1995, SEC File No. 1-4300).
          4.2            -- Form of Certificate for Registrant's 5.68% Cumulative
                            Preferred Stock, Series B (incorporated by reference to
                            Exhibit 4.2 to Amendment No. 2 on Form 8-K/A to
                            Registrant's Current Report on Form 8-K, dated August 18,
                            1998, SEC File No. 1-4300).
          4.3            -- Form of Certificate for Registrant's Automatically
                            Convertible Equity Securities, Conversion Preferred
                            Stock, Series C (incorporated by reference to Exhibit
                            99.8 to Amendment No. 1 on Form 8-K/A to Registrant's
                            Current Report on Form 8-K, dated April 29, 1999, SEC
                            File No. 1-4300).
          4.4            -- Rights Agreement, dated January 31, 1996, between
                            Registrant and Norwest Bank Minnesota, N.A., rights
                            agent, relating to the declaration of a rights dividend
                            to Registrant's common shareholders of record on January
                            31, 1996 (incorporated by reference to Exhibit (a) to
                            Registrant's Registration Statement on Form 8-A, dated
                            January 24, 1996, SEC File No. 1-4300).
         10.1            -- Credit Agreement, dated June 12, 1997, among the
                            Registrant, the lenders named therein, Morgan Guaranty
                            Trust Company, as Global Documentation Agent and U.S.
                            Syndication Agent, The First National Bank of Chicago, as
                            U.S. Documentation Agent, NationsBank of Texas, N.A., as
                            Co-Agent, Union Bank of Switzerland, Houston Agency, as
                            Co-Agent, and The Chase Manhattan Bank, as Global
                            Administrative Agent (incorporated by reference to
                            Exhibit 10.1 to Registrant's Current Report on Form 8-K,
                            dated June 13, 1997, SEC File No. 1-4300).
</TABLE>
<PAGE>   80

<TABLE>
<CAPTION>
EXHIBIT
NO.                                              DESCRIPTION
- -------                                          -----------
<C>                      <S>
         10.2            -- Credit Agreement, dated June 12, 1997, among Apache
                            Canada Ltd., a wholly-owned subsidiary of the Registrant,
                            the lenders named therein, Morgan Guaranty Trust Company,
                            as Global Documentation Agent, Royal Bank of Canada, as
                            Canadian Documentation Agent, The Chase Manhattan Bank of
                            Canada, as Canadian Syndication Agent, Bank of Montreal,
                            as Canadian Administrative Agent, and The Chase Manhattan
                            Bank, as Global Administrative Agent (incorporated by
                            reference to Exhibit 10.2 to Registrant's Current Report
                            on Form 8-K, dated June 13, 1997, SEC File No. 1-4300).
         10.3            -- Credit Agreement, dated June 12, 1997, among Apache
                            Energy Limited and Apache Oil Australia Pty Limited,
                            wholly-owned subsidiaries of the Registrant, the lenders
                            named therein, Morgan Guaranty Trust Company, as Global
                            Documentation Agent, Bank of America National Trust and
                            Savings Association, Sydney Branch, as Australian
                            Documentation Agent, The Chase Manhattan Bank, as
                            Australian Syndication Agent, Citisecurities Limited, as
                            Australian Administrative Agent, and The Chase Manhattan
                            Bank, as Global Administrative Agent (incorporated by
                            reference to Exhibit 10.3 to Registrant's Current Report
                            on Form 8-K, dated June 13, 1997, SEC File No. 1-4300).
         10.4            -- Fiscal Agency Agreement, dated January 4, 1995, between
                            Registrant and Chemical Bank, as fiscal agent, relating
                            to Registrant's 6% Convertible Subordinated Debentures
                            due 2002 (incorporated by reference to Exhibit 99.2 to
                            Registrant's Current Report on Form 8-K, dated December
                            6, 1994, SEC File No. 1-4300).
         10.5            -- Concession Agreement for Petroleum Exploration and
                            Exploitation in the Khalda Area in Western Desert of
                            Egypt by and among Arab Republic of Egypt, the Egyptian
                            General Petroleum Corporation and Phoenix Resources
                            Company of Egypt, dated April 6, 1981 (incorporated by
                            reference to Exhibit 19(g) to Phoenix's Annual Report on
                            Form 10-K for year ended December 31, 1984, SEC File No.
                            1-547).
         10.6            -- Amendment, dated July 10, 1989, to Concession Agreement
                            for Petroleum Exploration and Exploitation in the Khalda
                            Area in Western Desert of Egypt by and among Arab
                            Republic of Egypt, the Egyptian General Petroleum
                            Corporation and Phoenix Resources Company of Egypt
                            incorporated by reference to Exhibit 10(d)(4) to
                            Phoenix's Quarterly Report on Form 10-Q for quarter ended
                            June 30, 1989, SEC File No. 1-547).
         10.7            -- Farmout Agreement, dated September 13, 1985 and relating
                            to the Khalda Area Concession, by and between Phoenix
                            Resources Company of Egypt and Conoco Khalda
                            Inc(incorporated by reference to Exhibit 10.1 to
                            Phoenix's Registration Statement on Form S-1,
                            Registration No. 33-1069, filed October 23, 1985).
         10.8            -- Amendment, dated March 30, 1989, to Farmout Agreement
                            relating to the Khalda Area Concession, by and between
                            Phoenix Resources Company of Egypt and Conoco Khalda
                            Inc(incorporated by reference to Exhibit 10(d)(5) to
                            Phoenix's Quarterly Report on Form 10-Q for quarter ended
                            June 30, 1989, SEC File No. 1-547).
</TABLE>
<PAGE>   81

<TABLE>
<CAPTION>
EXHIBIT
NO.                                              DESCRIPTION
- -------                                          -----------
<C>                      <S>
         10.9            -- Amendment, dated May 21, 1995, to Concession Agreement
                            for Petroleum Exploration and Exploitation in the Khalda
                            Area in Western Desert of Egypt between Arab Republic of
                            Egypt, the Egyptian General Petroleum Corporation, Repsol
                            Exploracion Egipto S.A., Phoenix Resources Company of
                            Egypt and Samsung Corporation (incorporated by reference
                            to exhibit 10.12 to Registrant's Annual Report on Form
                            10-K for year ended December 31, 1997, SEC File No.
                            1-4300).
         10.10           -- Concession Agreement for Petroleum Exploration and
                            Exploitation in the Qarun Area in Western Desert of
                            Egypt, between Arab Republic of Egypt, the Egyptian
                            General Petroleum Corporation, Phoenix Resources Company
                            of Qarun and Apache Oil Egypt, Inc., dated May 17, 1993
                            (incorporated by reference to Exhibit 10(b) to Phoenix's
                            Annual Report on Form 10-K for year ended December 31,
                            1993, SEC File No. 1-547).
         10.11           -- Agreement for Amending the Gas Pricing Provisions under
                            the Concession Agreement for Petroleum Exploration and
                            Exploitation in the Qarun Area, effective June 16, 1994
                            (incorporated by reference to Exhibit 10.18 to
                            Registrant's Annual Report on Form 10-K for year ended
                            December 31, 1996, SEC File No. 1-4300).
        +10.12           -- Apache Corporation Corporate Incentive Compensation Plan
                            A (Senior Officers' Plan), dated July 16, 1998
                            (incorporated by reference to Exhibit 10.13 to
                            Registrant's Annual Report on Form 10-K for year ended
                            December 31, 1998, SEC File No. 1-4300).
        +10.13           -- Apache Corporation Corporate Incentive Compensation Plan
                            B (Strategic Objectives Format), dated July 16, 1998
                            (incorporated by reference to Exhibit 10.14 to
                            Registrant's Annual Report on Form 10-K for year ended
                            December 31, 1998, SEC File No. 1-4300).
        +10.14           -- Apache Corporation 401(k) Savings Plan, dated August 1,
                            1997, effective January 1, 1997 (incorporated by
                            reference to Exhibit 10.1 to Registrant's Current Report
                            on Form 8-K, dated August 8, 1997, SEC File No. 1-4300).
        +10.15           -- Amendments to Apache Corporation 401(k) Savings Plan,
                            dated October 21, 1999, effective as of January 1, 1997
                            and 1999.
        +10.16           -- Apache Corporation Money Purchase Retirement Plan, dated
                            December 31, 1997, effective January 1, 1997
                            (incorporated by reference to Exhibit 10.19 to
                            Registrant's Annual Report on Form 10-K for year ended
                            December 31, 1997, SEC File No. 1-4300).
        +10.17           -- Amendments to Apache Corporation Money Purchase
                            Retirement Plan, dated October 21, 1999, effective as of
                            January 1, 1997 and 1998.
        +10.18           -- Non-Qualified Retirement/Savings Plan of Apache
                            Corporation, restated as of January 1, 1997, and
                            amendments effective as of January 1, 1997, January 1,
                            1998 and January 1, 1999 (incorporated by reference to
                            Exhibit 10.17 to Registrant's Annual Report on Form 10-K
                            for year ended December 31, 1998, SEC File No. 1-4300).
        +10.19           -- Amendment to Non-Qualified Retirement/Savings Plan of
                            Apache Corporation, dated February 22, 2000, effective as
                            of January 1, 1999 (incorporated by reference to Exhibit
                            4.7 to Registrant's Registration Statement on Form S-8,
                            Registration No. 333-31092, filed February 25, 2000); and
                            Amendment dated July 27, 2000 (incorporated by reference
                            to Exhibit 4.8 to Amendment No. 1 to Registrant's
                            Registration Statement on Form S-8, Registration No.
                            333-31092, filed August 18, 2000).
</TABLE>
<PAGE>   82

<TABLE>
<CAPTION>
EXHIBIT
NO.                                              DESCRIPTION
- -------                                          -----------
<C>                      <S>
       +*10.20           -- Apache Corporation 1990 Stock Incentive Plan, as amended
                            and restated December 14, 2000, effective March 1, 2001.
       +*10.21           -- Apache Corporation 1995 Stock Option Plan, as amended and
                            restated December 14, 2000, effective March 1, 2001.
       +*10.22           -- Apache Corporation 2000 Share Appreciation Plan, dated
                            December 19, 2000, effective October 12, 2000.
       +*10.23           -- Apache Corporation 1996 Performance Stock Option Plan, as
                            amended and restated December 14, 2000, effective March
                            1, 2001.
       +*10.24           -- Apache Corporation 1998 Stock Option Plan, as amended and
                            restated December 14, 2000, effective March 1, 2001.
       +*10.25           -- Apache Corporation 2000 Stock Option Plan, as amended and
                            restated December 14, 2000, effective March 1, 2001.
        +10.26           -- 1990 Employee Stock Option Plan of The Phoenix Resource
                            Companies, Inc., as amended through September 29, 1995,
                            effective April 9, 1990 (incorporated by reference to
                            Exhibit 10.33 to Registrant's Annual Report on Form 10-K
                            for year ended December 31, 1996, SEC File No. 1-4300).
        +10.27           -- Apache Corporation Income Continuance Plan, as amended
                            and restated February 24, 1988 (incorporated by reference
                            to Exhibit 10.19 to Registrant's Annual Report on Form
                            10-K for year ended December 31, 1990, SEC File No.
                            1-4300).
       +*10.28           -- Apache Corporation Deferred Delivery Plan, as amended and
                            restated December 14, 2000.
        +10.29           -- Apache Corporation Non-Employee Directors' Compensation
                            Plan, as amended and restated December 17, 1998
                            (incorporated by reference to Exhibit 10.26 to
                            Registrant's Annual Report on Form 10-K for year ended
                            December 31, 1998, SEC File No. 1-4300).
       +*10.30           -- Apache Corporation Outside Directors' Retirement Plan, as
                            amended and restated February 8, 2001.
       +*10.31           -- Apache Corporation Equity Compensation Plan for
                            Non-Employee Directors, as amended and restated September
                            14, 2000.
        +10.32           -- Amended and Restated Employment Agreement, dated December
                            5, 1990, between Registrant and Raymond Plank
                            (incorporated by reference to Exhibit 10.39 to
                            Registrant's Annual Report on Form 10-K for year ended
                            December 31, 1996, SEC File No. 1-4300).
        +10.33           -- First Amendment, dated April 4, 1996, to Restated
                            Employment Agreement between Registrant and Raymond Plank
                            (incorporated by reference to Exhibit 10.40 to
                            Registrant's Annual Report on Form 10-K for year ended
                            December 31,1996, SEC File No. 1-4300).
        +10.34           -- Amended and Restated Employment Agreement, dated December
                            20, 1990, between Registrant and John A. Kocur
                            (incorporated by reference to Exhibit 10.10 to
                            Registrant's Annual Report on Form 10-K for year ended
                            December 31, 1990, SEC File No. 1-4300).
        +10.35           -- Employment Agreement, dated June 6, 1988, between
                            Registrant and G. Steven Farris (incorporated by
                            reference to Exhibit 10.6 to Registrant's Annual Report
                            on Form 10-K for year ended December 31, 1989, SEC File
                            No. 1-4300).
</TABLE>
<PAGE>   83

<TABLE>
<CAPTION>
EXHIBIT
NO.                                              DESCRIPTION
- -------                                          -----------
<C>                      <S>
        +10.36           -- Conditional Stock Grant Agreement, dated December 17,
                            1998, between Registrant and G. Steven Farris
                            (incorporated by reference to Exhibit 10.33 to
                            Registrant's Annual Report on Form 10-K for year ended
                            December 31, 1998, SEC File No. 1-4300).
         10.37           -- Amended and Restated Gas Purchase Agreement, effective
                            July 1, 1998, by and among Registrant and MW Petroleum
                            Corporation, as Seller, and Producers Energy Marketing,
                            LLC, as Buyer (incorporated by reference to Exhibit 10.1
                            to Registrant's Current Report on Form 8-K, dated June
                            18, 1998, SEC File No. 1-4300).
        *12.1            -- Statement of Computation of Ratios of Earnings to Fixed
                            Charges and Combined Fixed Charges and Preferred Stock
                            Dividends
        *21.1            -- Subsidiaries of Registrant
        *23.1            -- Consent of Arthur Andersen LLP
        *23.2            -- Consent of Ryder Scott Company L.P., Petroleum
                            Consultants
        *24.1            -- Power of Attorney (included as a part of the signature
                            pages to this report)
</TABLE>

- ---------------

* Filed herewith.

+ Management contracts or compensatory plans or arrangements required to be
  filed herewith pursuant to Item 14 hereof.
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-10.20
<SEQUENCE>2
<FILENAME>h84997ex10-20.txt
<DESCRIPTION>1990 STOCK INCENTIVE PLAN
<TEXT>

<PAGE>   1
                                                                   EXHIBIT 10.20













                               APACHE CORPORATION

                            1990 STOCK INCENTIVE PLAN

                   (AS AMENDED AND RESTATED DECEMBER 14, 2000;
                         EFFECTIVE AS OF MARCH 1, 2001)















<PAGE>   2



                               APACHE CORPORATION
                            1990 STOCK INCENTIVE PLAN

                   (AS AMENDED AND RESTATED DECEMBER 14, 2000;
                         EFFECTIVE AS OF MARCH 1, 2001)

                                    SECTION 1

                                  INTRODUCTION

1.1 Establishment. Apache Corporation, a Delaware corporation (hereinafter
referred to, together with its Affiliated Corporations (as defined in subsection
2.1(a)) as the "Company" except where the context otherwise requires), hereby
establishes the Apache Corporation 1990 Stock Incentive Plan (the "Plan") for
certain key employees of the Company. The Plan permits the grant of stock
options to certain key employees of the Company.

1.2 Purposes. The purposes of the Plan are to provide the key management
employees selected for participation in the Plan with added incentives to
continue in the long-term service of the Company and to create in such employees
a more direct interest in the future success of the operations of the Company by
relating incentive compensation to increases in shareholder value, so that the
income of the key management employees is more closely aligned with the income
of the Company's shareholders. The Plan is also designed to attract key
employees and to retain and motivate participating employees by providing an
opportunity for investment in the Company.

1.3 Effective Date. The Effective Date of the Plan (the "Effective Date") is
September 19, 1990. This Plan and each option granted hereunder is conditioned
on and shall be of no force or effect until approval of the Plan by the holders
of the shares of voting stock of the Company unless the Company, on the advice
of counsel, determines that shareholder approval is not necessary.

                                    SECTION 2

                                   DEFINITIONS

2.1 Definitions. The following terms shall have the meanings set forth below:

         (a) "Administrative Agent" means any designee or agent that may be
appointed by the Committee pursuant to Section 3.1(b) hereof.



                                      -1-
<PAGE>   3

         (b) "Affiliated Corporation" means any corporation or other entity
(including but not limited to a partnership) which is affiliated with Apache
Corporation through stock ownership or otherwise and is treated as a common
employer under the provisions of Sections 414(b) and (c) of the Internal Revenue
Code.

         (c) "Board" means the Board of Directors of the Company.

         (d) "Committee" means the Stock Option Plan Committee of the Board
which is empowered hereunder to take actions in the administration of the Plan.
The Committee shall be constituted at all times as to permit the Plan to comply
with Rule 16b-3 or any successor rule promulgated under the Securities Exchange
Act of 1934 (the "1934 Act"). Members of the Committee shall be appointed from
time to time by the Board, shall serve at the pleasure of the Board and may
resign at any time upon written notice to the Board.

         (e) "Deferred Delivery Plan" means the Company's Deferred Delivery
Plan, effective as of February 10, 2000 and as it may be amended from time to
time, or any successor plan.

         (f) "Depositary Shares" means the Depositary shares representing the
Company's preferred stock convertible into Stock.

         (g) "Effective Date" means the effective date of the Plan, September
19, 1990.

         (h) "Eligible Employees" means those full-time key employees
(including, without limitation, officers and directors who are also employees)
of the Company or any division thereof, upon whose judgment, initiative and
efforts the Company is, or will become, largely dependent for the successful
conduct of its business.

         (i) "Fair Market Value" means the per share closing price of the Stock
or Depositary Shares, as applicable, on the composite tape on a particular date.
If on such date there are no transactions in the Stock or Depositary Shares, as
applicable, the Fair Market Value shall be determined as of the immediately
preceding date on which there were transactions in the Stock or Depositary
Shares, as applicable.

         (j) "Internal Revenue Code" means the Internal Revenue Code of 1986, as
it may be amended from time to time.

         (k) "Option" means a right to purchase shares of Stock at a stated
price for a specified period of time. All Options granted under the Plan shall
be Options which are not "incentive stock options" as described in Section 422A
of the Internal Revenue Code.




                                      -2-
<PAGE>   4

         (l) "Option Price" means the price at which shares of Stock subject to
an Option may be purchased, determined in accordance with subsection 7.2(b).

         (m) "Participant" means an Eligible Employee designated by the
Committee from time to time during the term of the Plan to receive one or more
Options under the Plan.

         (n) "Stock" means the $1.25 par value Common Stock of the Company.

         (o) "Stock Units" means investment units under the Deferred Delivery
Plan, each of which is deemed to be equivalent to one share of Stock.

2.2 Gender and Number. Except when otherwise indicated by the context, the
masculine gender shall also include the feminine gender, and the definition of
any term herein in the singular shall also include the plural.

                                    SECTION 3

                               PLAN ADMINISTRATION

3.1      Administration by the Committee.

         (a) The Plan shall also be administered by the Committee. In accordance
with the provisions of the Plan, the Committee shall, in its sole discretion,
select the Participants from among the Eligible Employees, determine the Options
to be granted pursuant to the Plan, the number of shares of Stock to be issued
thereunder and the time at which such Options are to be granted, fix the Option
Price, and establish such other terms and requirements as the Committee may deem
necessary or desirable and consistent with the terms of the Plan. The Committee
shall determine the form or forms of the agreements with Participants which
shall evidence the particular provisions, terms, conditions, rights and duties
of the Company and the Participants with respect to Options granted pursuant to
the Plan, which provisions need not be identical except as may be provided
herein.

         (b) The Committee may from time to time adopt such rules and
regulations for carrying out the purposes of the Plan as it may deem proper and
in the best interests of the Company. The Committee may appoint an
Administrative Agent, who need not be a member of the Committee or an employee
of the Company, to assist the Committee in administration of the Plan and to
whom it may delegate such powers as the Committee deems appropriate, except that
the Committee shall determine any dispute. The Committee may correct any defect,
supply any omission or reconcile any inconsistency in the Plan or in any
agreement entered into hereunder in the manner and to the extent it





                                      -3-
<PAGE>   5

shall deem expedient and it shall be the sole and final judge of such
expediency. No member of the Committee shall be liable for any action or
determination made in good faith. The determination, interpretations and other
actions of the committee pursuant to the provisions of the Plan shall be binding
and conclusive for all purposes and on all persons.

                                    SECTION 4

                            STOCK SUBJECT TO THE PLAN

4.1 Number of Shares. Two Million Fifty Thousand (2,050,000) shares of Stock are
authorized for issuance under the Plan in accordance with the provisions of the
Plan and subject to such restrictions or other provisions as the Committee may
from time to time deem necessary. This authorization may be increased from time
to time by approval of the Board and by the shareholders of the Company if, on
the advice of counsel for the Company, such shareholder approval is required.
Shares of Stock which may be issued upon exercise of Options shall be applied to
reduce the maximum number of shares of Stock remaining available for use under
the Plan. The Company shall at all times during the term of the Plan and while
any Options are outstanding retain as authorized and unissued Stock, or as
treasury Stock, at least the number of shares from time to time required under
the provisions of the Plan, or otherwise assure itself of its ability to perform
its obligations hereunder.

4.2 Other Shares of Stock. Any shares of Stock that are subject to an Option
which expires or for any reason is terminated unexercised, and any shares of
Stock that for any other reason are not issued to an Eligible Employee or are
forfeited shall automatically become available for use under the Plan.

4.3 Adjustments for Stock Split, Stock Dividend, Etc. If the Company shall at
any time increase or decrease the number of its outstanding shares of Stock or
change in any way the rights and privileges of such shares by means of the
payment of a stock dividend or any other distribution upon such shares payable
in Stock, or through a stock split, subdivision, consolidation, combination,
reclassification or recapitalization involving the Stock, then in relation to
the Stock that is affected by one or more of the above events, the numbers,
rights and privileges of the following shall be increased, decreased or changed
in like manner as if they had been issued and outstanding, fully paid in
nonassessable at the time of such occurrence: (i) the shares of Stock as to
which Options may be granted under the Plan; and (ii) the shares of the Stock
then included in each outstanding Option granted hereunder.




                                      -4-
<PAGE>   6

4.4 Dividend Payable in Stock of Another Corporation, Etc. If the Company shall
at any time pay or make any dividend or other distribution upon the Stock
payable in securities or other property (except money or Stock), a proportionate
part of such securities or other property shall be set aside and delivered to
any Participant then holding an Option for the particular type of Stock for
which the dividend or other distribution was made, upon exercise thereof. Prior
to the time that any such securities or other property are delivered to a
Participant in accordance with the foregoing, the Company shall be the owner of
such securities or other property and shall have the right to vote the
securities, receive any dividends payable on such securities, and in all other
respects shall be treated as the owner. If securities or other property which
have been set aside by the Company in accordance with this Section are not
delivered to a Participant because an Option is not exercised, then such
securities or other property shall remain the property of the Company and shall
be dealt with by the Company as it shall determine in its sole discretion.

4.5 Other Changes in Stock. In the event there shall be any change, other than
as specified in Sections 4.3 and 4.4, in the number or kind of outstanding
shares of Stock or of any stock or other securities into which the Stock shall
be changed or for which it shall have been exchanged, and if the Committee shall
in its discretion determine that such change equitably requires an adjustment in
the number or kind of shares subject to outstanding Options or which have been
reserved for issuance pursuant to the Plan but are not then subject to an
Option, then such adjustments shall be made by the Committee and shall be
effective for all purposes of the Plan and on each outstanding Option that
involves the particular type of stock for which a change was effected.

4.6 Rights to Subscribe. If the Company shall at any time grant to the holders
of its Stock rights to subscribe pro rata for additional shares thereof or for
any other securities of the Company or of any other corporation, there shall be
reserved with respect to the shares then under Option to any Participant of the
particular class of Stock involved the Stock or other securities which the
Participant would have been entitled to subscribe for if immediately prior to
such grant the Participant had exercised his entire Option. If, upon exercise of
any such Option, the Participant subscribes for the additional shares of other
securities, the aggregate Option Price shall be increased by the amount of the
price that is payable by the Participant for such Stock or other securities.

4.7 General Adjustment Rules. No adjustment or substitution provided for in this
Section 4 shall require the Company to sell a fractional share of Stock under
any Option, or otherwise issue a fractional share of Stock, and the total
substitution or adjustment with respect to each Option shall be limited by
deleting any fractional share. In the case of any such substitution or
adjustment, the aggregate Option Price for the shares of Stock then subject to
the Option shall remain unchanged but the Option Price per share under each such
Option shall be equitably adjusted by the Committee to reflect the greater or
lesser





                                      -5-
<PAGE>   7

number of shares of Stock or other securities into which the Stock subject to
the Option may have been changed.

4.8 Determination by the Committee, Etc. Adjustments under this Section 4 shall
be made by the Committee, whose determinations with regard thereto shall be
final and binding upon all parties.

                                    SECTION 5

                          REORGANIZATION OR LIQUIDATION

In the event that the Company is merged or consolidated with another corporation
and the Company is not the surviving corporation, or if all or substantially all
of the assets or more than 20 percent of the outstanding voting stock of the
Company is acquired by any other corporation, business entity or person, or in
case of a reorganization (other than a reorganization under the United States
Bankruptcy Code) or liquidation of the Company, and if the provisions of Section
9 do not apply, the Committee, or the board of directors of any corporation
assuming the obligations of the Company, shall, as to the Plan and outstanding
Options either (i) make appropriate provision for the adoption and continuation
of the Plan by the acquiring or successor corporation and for the protection of
any such outstanding Options by the substitution on an equitable basis of
appropriate stock of the Company or of the merged, consolidated or otherwise
reorganized corporation which will be issuable with respect to the Stock,
provided that no additional benefits shall be conferred upon the Participants
holding such Options as a result of such substitution, and the excess of the
aggregate Fair Market Value of the shares subject to the Options immediately
after such substitution over the aggregate Option Price thereof is not more than
the excess of the aggregate Fair Market Value of the shares subject to such
Options immediately before such substitution over the aggregate Option Price
thereof, or (ii) upon written notice to the Participants, provide that all
unexercised Options must be exercised within a specified number of days of the
date of such notice or they will be terminated. In the latter event, the
Committee shall accelerate the vesting dates of outstanding Options so that all
Options become fully vested and exercisable prior to any such event.

                                    SECTION 6

                                  PARTICIPATION

Participants in the Plan shall be those Eligible Employees who, in the judgment
of the Committee, are performing, or during the term of their incentive
arrangement will perform, vital services in the management, operation and
development of the Company or







                                      -6-
<PAGE>   8

an Affiliated Corporation, and significantly contribute, or are expected to
significantly contribute, to the achievement of long-term corporate economic
objectives. Participants may be granted from time to time one or more Options;
provided, however, that the grant of each such Option shall be separately
approved by the Committee, and receipt of one such Option shall not result in
automatic receipt of any other Option. Upon determination by the Committee that
an Option is to be granted to a Participant, written notice shall be given to
such person, specifying the terms, conditions, rights and duties related
thereto. Each Participant shall, if required by the Committee, enter into an
agreement with the Company, in such form as the Committee shall determine and
which is consistent with the provisions of the Plan, specifying such terms,
conditions, rights and duties. Options shall be deemed to be granted as of the
date specified in the grant resolution of the Committee, which date shall be the
date of any related agreement with the Participant. In the event of any
inconsistency between the provisions of the Plan and any such agreement entered
into hereunder, the provisions of the Plan shall govern.

                                    SECTION 7

                                  STOCK OPTIONS

7.1 Grant of Stock Options. Coincident with or following designation for
participation in the Plan, a Participant may be granted one or more Options. In
no event shall the exercise of one Option affect the right to exercise any other
Option or affect the number of shares of Stock for which any other Option may be
exercised, except as provided in subsection 7.2(j).

7.2 Stock Option Agreements. Each Option granted under the Plan shall be
evidenced by a written stock option agreement which shall be entered into by the
Company and the Participant to whom the Option is granted (the "Option Holder"),
and which shall contain the following terms and conditions, as well as such
other terms and conditions, not inconsistent therewith, as the Committee may
consider appropriate in each case.

         (a) Number of Shares. Each stock option agreement shall state that it
covers a specified number of shares of the Stock, as determined by the
Committee.

         (b) Price. The price at which each share of Stock covered by an Option
may be purchased shall be determined in each case by the Committee and set forth
in the stock option agreement, but in no event shall the price be less than the
Fair Market Value of the Stock on the date the Option is granted.

         (c) Duration of Options; Employment Required For Exercise. Each stock
option agreement shall state the period of time, determined by the Committee,
within




                                      -7-
<PAGE>   9

which the Option may be exercised by the Option Holder (the "Option Period").
The Option Period must end, in all cases, not more than ten years from the date
an Option is granted. Except as otherwise provided in Sections 5 and 8 and
subsection 7.2(d)(iv) hereof, each Option granted under the Plan shall become
exercisable in increments such that 25 percent of the Option will become
exercisable on each of the four subsequent one-year anniversaries of the date
the Option is granted, but each such additional 25 percent increment shall
become exercisable only if the Option Holder has been continuously employed by
the Company from the date the Option is granted through the date on which each
such additional 25 percent increment becomes exercisable.

         (d) Termination of Employment, Death, Disability, Etc. Each stock
option agreement shall provide as follows with respect to the exercise of the
Option upon termination of the employment or the death of the Option Holder:

                  (i) If the employment of the Option Holder is terminated
within the Option Period for cause, as determined by the Company, the Option
shall thereafter be void for all purposes. As used in this subsection 7.2(d),
"cause" shall mean a gross violation, as determined by the Company, of the
Company's established policies and procedures, provided that the effect of this
subsection 7.2(d) (i) shall be limited to determining the consequences of a
termination and that nothing in this subsection 7.2(d) (i) shall restrict or
otherwise interfere with the Company's discretion with respect to the
termination of any employee.

                  (ii) If the Option Holder retires from employment by the
Company or its affiliates on or after attaining age 65, the Option may be
exercised by the Option Holder within 36 months following his or her retirement
(provided that such exercise must occur within the Option Period), but not
thereafter. In the event of the Option Holder's death during such 36-month
period, each Option may be exercised by those entitled to do so in the manner
referred to in (iv) below. In any such case, the Option may be exercised only as
to the shares as to which the Option had become exercisable on or before the
date of the Option Holder's retirement.

                  (iii) If the Option Holder becomes disabled (as determined
pursuant to the Company's Long-Term Disability Plan), during the Option Period
while still employed, or within the three-month period referred to in (v) below,
or within the 36-month period referred to in (ii) above, the Option may be
exercised by the Option Holder or by his or her guardian or legal
representative, within twelve months following the Option Holder's disability,
or within the 36-month period referred to in (ii) if applicable and if longer
(provided that such exercise must occur within the Option Period), but not
thereafter. In the event of the Option Holder's death during such twelve-month
period, each Option may be exercised by those entitled to do so in the manner
referred to in (iv) below. In any





                                      -8-
<PAGE>   10

such case, the Option may be exercised only as to the shares as to which the
Option had become exercisable on or before the date of the Option Holder's
disability.

                  (iv) In the event of the Option Holder's death while still
employed by the Company, each Option of the deceased Option Holder may be
exercised by those entitled to do so under the Option Holder's will or under the
laws of descent and distribution within twelve months following the Option
Holder's death (provided that in any event such exercise must occur within the
Option Period), but not thereafter, as to all shares of Stock which are subject
to such Option, including each 25 percent increment of the Option, if any, which
has not yet become exercisable at the time of the Option Holder's death. In the
event of the Option Holder's death within the 36-month period referred to in
(ii) above or within the twelve-month period referred to in (iii) above, each
Option of the deceased Option Holder that is exercisable at the time of death
may be exercised by those entitled to do so under the Option Holder's will or
under the laws of descent and distribution within twelve months following the
Option Holder's death or within the 36-month period referred to in (ii), if
applicable and if longer (provided that in any event such exercise must occur
within the Option Period). The provisions of this paragraph (iv) of subsection
7.2(d) shall be applicable to each Stock Option Agreement as if set forth
therein word for word. Each Stock Option Agreement executed by the Company prior
to the adoption of this provision shall be deemed amended to include the
provisions of this paragraph and all Options granted pursuant to such Stock
Option Agreements shall be exercisable as provided herein.

                  (v) If the employment of the Option Holder by the Company is
terminated (which for this purpose means that the Option Holder is no longer
employed by the Company or by an Affiliated Corporation) within the Option
Period for any reason other than cause, retirement on or after attaining age 65,
disability or the Option Holder's death, the Option may be exercised by the
Option Holder within three months following the date of such termination
(provided that such exercise must occur within the Option Period), but not
thereafter. In any such case, the Option may be exercised only as to the shares
as to which the Option had become exercisable on or before the date of
termination of employment.

         (e) Transferability. Each stock option agreement shall provide that the
Option granted therein is not transferable by the Option Holder except by will
or pursuant to the laws of descent and distribution, and that such Option is
exercisable during the Option Holder's lifetime only by him or her, or in the
event of disability or incapacity, by his or her guardian or legal
representative.

         (f) Agreement to Continue in Employment. Each stock option agreement
shall contain the Option Holder's agreement to remain in the employment of the
Company, at





                                      -9-
<PAGE>   11

the pleasure of the Company, for a continuous period of at least one year after
the date of such stock option agreement, at the salary rate in effect on the
date of such agreement or at such changed rate as may be fixed, from time to
time, by the Company.

         (g) Exercise, Payments, Etc.

                  (i) Each stock option agreement shall provide that the method
for exercising the Option granted therein shall be by delivery to the Office of
the Secretary of the Company or to the Administrative Agent of written notice
specifying the number of shares of Stock with respect to which such Option is
exercised and payment to the Company of the aggregate Option Price. Such notice
shall be in a form satisfactory to the Committee and shall specify the
particular Option (or portion thereof) which is being exercised and the number
of shares of Stock with respect to which the Option is being exercised. The
exercise of the Option shall be deemed effective upon receipt of such notice by
the Office of the Secretary or by the Administrative Agent and payment is made
to the Company of the aggregate Option Price (the "Exercise Date"); however, if
payment of the aggregate Option Price is made pursuant to a sale of shares of
Stock as contemplated by subsection 7.2(g)(iii)(F) below, the Exercise Date
shall be deemed to be the date of such sale. If requested by the Company, such
notice shall contain the Participant's representation that he or she is
purchasing the Stock for investment purposes only and his or her agreement not
to sell any stock so purchased in any manner that is in violation of the
Securities Act of 1933, as amended, or any applicable state law, and such
restriction, or notice thereof, shall be placed on the certificates representing
the Stock so purchased. The purchase of such Stock shall take place upon
delivery of such notice to the Office of the Secretary of the Company or to the
Administrative Agent, at which time the aggregate Option Price shall be paid in
full to the Company by any of the methods or any combination of the methods set
forth in 7.2(g)(iii) below.

                  (ii) Except as referenced below in connection with the
Deferred Delivery Plan, the shares of Stock to which the Participant is entitled
as a result of the exercise of the Option shall be issued by the Company and (A)
delivered by electronic means to an account designated by the Participant, or
(B) delivered to the Participant in the form of a properly executed certificate
or certificates representing such shares of Stock. If shares of Stock and/or
Depositary Shares are used to pay all or part of the aggregate Option Price, the
Company shall issue and deliver to the Participant the additional shares of
Stock, in excess of the aggregate Option Price or portion thereof paid using
shares of Stock or Depositary Shares, to which the Participant is entitled as a
result of the Option exercise. If the Participant exercising an Option (x) is
eligible for participation in the Deferred Delivery Plan, (y) pays the aggregate
Option Price pursuant to 7(g)(iii)(A), (B), (C), (D) or (E) below, and (z) has
made an irrevocable election at least six months prior to the Exercise Date as
required under the Deferred Delivery Plan, the income resulting from





                                      -10-
<PAGE>   12

the Option exercise shall be deferred into the Participant's Deferred Delivery
Plan account and no additional shares of Stock shall be delivered to the
Participant.

                  (iii) the aggregate Option Price shall be paid by any of the
following methods or any combination of the following methods:

                           (A) in cash, including the wire transfer of funds in
U.S. dollars to one of the Company's bank accounts located in the United States,
with such bank account to be designated from time to time by the Company;

                           (B) by personal, certified or cashier's check payable
in U.S. dollars to the order of the Company;

                           (C) by delivery to the Company or the Administrative
Agent of certificates representing a number of shares of Stock then owned by the
Participant, the aggregate Fair Market Value of which (as of the Exercise Date)
is not greater than the aggregate Option Price of the Option being exercised,
properly endorsed for transfer to the Company; provided that the shares of Stock
used for this purpose must have been owned by the Participant for a period of at
least six months;

                           (D) by certification or attestation to the Company or
the Administrative Agent of the Participant's ownership (as of the Exercise
Date) of the number of shares of Stock and/or Depositary Shares, the aggregate
Fair Market Value of which (as of the Exercise Date) is not greater than the
aggregate Option Price of the Option being exercised, provided that the shares
of Stock and/or Depositary Shares used for this purpose have been owned by the
Participant for a period of at least six months;

                           (E) if the income resulting from the Option exercise
is to be deferred into the Participant's Deferred Delivery Plan account, by
certification or attestation to the Company or the Administrative Agent of the
Participant's ownership (as of the Exercise Date) of a number of vested Stock
Units held in the Participant's Deferred Delivery Plan account, the equivalent
aggregate Fair Market Value of which (as of the Exercise Date) is not greater
than the aggregate Option Price of the Option being exercised, provided that the
Stock Units used for this purpose were vested as of the Exercise Date; or

                           (F) by delivery to the Company or the Administrative
Agent of a properly executed notice of exercise together with irrevocable
instructions to a broker to promptly deliver to the Company, by wire transfer or
check as noted in (A) and (B) above, the amount of the proceeds of the sale of
all or a portion of the Stock or of a loan from the broker to the Option Holder
necessary to pay the aggregate Option Price.




                                      -11-
<PAGE>   13

                  (iv) For purposes of the Plan, the income resulting from an
Option exercise shall be based on the Fair Market Value of the Stock for the
Exercise Date; however, if payment of the aggregate Option Price is made
pursuant to a sale of shares of Stock as contemplated by subsection
7.2(g)(iii)(F) hereof, the Fair Market Value shall be deemed to be the per share
sale price and the Exercise Date shall be deemed to be the date of such sale.

         (h) Date of Grant. An option shall be considered as having been granted
on the date specified in the grant resolution of the Committee.

         (i) Tax Withholding. Each Stock Option Agreement shall provide that,
upon exercise of the Option, the Participant shall make appropriate arrangements
with the Company to provide for the amount of tax withholding required by
Sections 3102 and 3402 or any successor section(s) of the Internal Revenue Code
and applicable state and local income tax laws, including payment of such taxes
in cash, by check or as provided in Section 13.2 hereof.

         (j) Adjustment of Options. Subject to the provisions of Sections 4, 5,
7, 8 and 12, the Committee may make any adjustment in the number of shares
covered by, or the terms of an outstanding Option and a subsequent granting of
an Option, by amendment or by substitution of an outstanding Option; however,
except as provided in Sections 4, 5, 8 and 12 hereof, the Committee may not
adjust the exercise price of any outstanding Option. Such amendment or
substitution may result in terms and conditions (including the number of shares
covered, vesting schedule or exercise period) that differ from the terms and
conditions of the original Option. The Committee may not, however, adversely
affect the rights of any Participant to previously granted Options without the
consent of such Participant. If such action is effected by amendment, the
effective date of such amendment will be the date of the original grant.

7.3 Shareholder Privileges. No Option Holder shall have any rights as a
shareholder with respect to any shares of Stock covered by an Option until the
Option Holder becomes the holder of record of such Stock, and no adjustments
shall be made for dividends or other distributions or other rights as to which
there is a record date preceding the date such Option Holder becomes the holder
of record of such Stock, except as provided in Section 4.




                                      -12-
<PAGE>   14



                                    SECTION 8

                                CHANGE IN CONTROL

8.1 In General. In the event of a change in control of the Company as defined in
Section 8.3, then the Committee may, in its sole discretion, without obtaining
shareholder approval, to the extent permitted in Section 12, take any or all of
the following actions: (a) accelerate the exercise dates of any outstanding
Options or make all such Options fully vested and exercisable; (b) grant a cash
bonus award to any Option Holder in an amount necessary to pay the aggregate
Option Price of all or any portion of the Options then held by such Option
Holder; (c) pay cash to any or all Option Holders in exchange for the
cancellation of their outstanding Options in an amount equal to the difference
between the exercise price of such Options and the greater of the tender offer
price for the underlying Stock or the Fair Market Value of the Stock on the date
of the cancellation of the Options; and (d) make any other adjustments or
amendments to the outstanding Options.

8.2 Limitation on Payments. If the provisions of this Section 8 would result in
the receipt by any Participant of a payment within the meaning of Section 280G
of the Internal Revenue Code and the regulations promulgated thereunder and if
the receipt of such payment by any Participant would, in the opinion of
independent tax counsel of recognized standing selected by the Company, result
in the payment by such Participant of any excise tax provided for in Sections
280G and 4999 of the Internal Revenue Code, then the amount of such payment
shall be reduced to the extent required, in the opinion of independent tax
counsel, to prevent the imposition of such excise tax; provided, however, that
the Committee, in its sole discretion, may authorize the payment of all or any
portion of the amount of such reduction to the Participant.

8.3 Definition. For purposes of the Plan, a "change in control" shall mean any
of the events specified in the Company's Income Continuance Plan which
constitute a change in control within the meaning of that Plan.

                                    SECTION 9

                        RIGHTS OF EMPLOYEES, PARTICIPANTS

9.1 Employment. Nothing contained in the Plan or in any Option granted under the
Plan shall confer upon any Participant any right with respect to the
continuation of his or her employment by the Company or any Affiliated
Corporation, or interfere in any way with the right of the Company or any
Affiliated Corporation, subject to the terms of any separate employment
agreement to the contrary, at any time to terminate such




                                      -13-
<PAGE>   15

employment or to increase or decrease the compensation of the Participant from
the rate in existence at the time of the grant of an Option. Whether an
authorized leave of absence, or absence in military or government service, shall
constitute a termination of employment shall be determined by the Committee at
the time.

9.2 Nontransferability. No right or interest of any Participant in an Option
granted pursuant to the Plan shall be assignable or transferable during the
lifetime of the Participant, either voluntarily or involuntarily, or subjected
to any lien, directly or indirectly, by operation of law, or otherwise,
including execution, levy, garnishment, attachment, pledge or bankruptcy. In the
event of a Participant's death, a Participant's rights and interests in Options
shall, to the extent provided in Section 7, be transferable by testamentary will
or the laws of descent and distribution, and payment of any amounts due under
the Plan shall be made to, and exercise of any Options may be made by, the
Participant's legal representatives, heirs or legatees. If, in the opinion of
the Committee, a person entitled to payments or to exercise rights with respect
to the Plan is disabled from caring for his affairs because of mental condition,
physical condition or age, payment due such person may be made to, and such
rights shall be exercised by, such person's guardian, conservator or other legal
personal representative upon furnishing the Committee with evidence of such
status satisfactory to the Committee.

                                   SECTION 10

                              GENERAL RESTRICTIONS

10.1 Investment Representations. The Company may require any person to whom an
Option is granted, as a condition of exercising such Option, to give written
assurances in substance and form satisfactory to the Company and its counsel to
the effect that such person is acquiring the Stock subject to the Option for his
own account for investment and not with any present intention of selling or
otherwise distributing the same, and to such other effects as the Company deems
necessary or appropriate in order to comply with Federal and applicable state
securities laws.

10.2 Compliance with Securities Laws. Each Option shall be subject to the
requirement that, if at any time counsel to the Company shall determine that the
listing, registration or qualification of the shares subject to such Option upon
any securities exchange or under any state or federal law, or the consent or
approval of any governmental or regulatory body, is necessary as a condition of,
or in connection with, the issuance or purchase of shares thereunder, such
Option may not be accepted or exercised in whole or in part unless such listing,
registration, qualification, consent or approval shall have been effected or
obtained on conditions acceptable to the Committee. Nothing herein shall be





                                      -14-
<PAGE>   16

deemed to require the Company to apply for or to obtain such listing,
registration or qualification.

                                   SECTION 11

                             OTHER EMPLOYEE BENEFITS

The amount of any income deemed to be received by a Participant as a result of
an Option exercise shall not constitute "earnings" or "compensation" with
respect to which any other employee benefits of such employee are determined
including, without limitation benefits under any pension, profit sharing, life
insurance or salary continuation plan.

                                   SECTION 12

                  PLAN AMENDMENT, MODIFICATION AND TERMINATION

The Board may at any time terminate, and from time to time may amend or modify
the Plan provided, however, that no amendment or modification may become
effective without approval of the amendment or modification by the shareholders
if shareholder approval is required to enable the Plan to satisfy any applicable
statutory or regulatory requirements unless the Company, on the advice of
counsel, determines that shareholder approval is otherwise necessary or
desirable.

No amendment, modification or termination of the Plan shall in any manner
adversely affect any Options theretofore granted under the Plan, without the
consent of the Participant holding such Options.

The Committee shall have the authority to adopt such modifications, procedures
and subplans as may be necessary or desirable to comply with the provisions of
the laws (including, but not limited to, tax laws and regulations) of countries
other than the United States in which the Company may operate, so as to assure
the viability of the benefits of the Plan to Participants employed in such
countries.

                                   SECTION 13

                                   WITHHOLDING

13.1 Withholding Requirement. The Company's obligations to deliver shares of
Stock upon the exercise of an Option, or to defer income resulting from an
Option exercise into the Deferred Delivery Plan, shall be subject to the
Participant's satisfaction of all applicable federal, state and local income and
other tax withholding requirements.




                                      -15-
<PAGE>   17

13.2 Satisfaction of Required Withholding. At the time the Committee grants an
Option, it may, in its sole discretion, grant the Participant an election to pay
all such amounts of required tax withholding, or any part thereof:

         (a) by the delivery to the Company or the Administrative Agent of a
number of shares of Stock then owned by the Participant, the aggregate Fair
Market Value of which (as of the Exercise Date) is not greater than the amount
required to be withheld, provided that such shares have been held by the
Participant for a period of at least six months;

         (b) by certification or attestation to the Company or the
Administrative Agent of the Participant's ownership (as of the Exercise Date) of
a number of shares of Stock and/or Depositary Shares, the aggregate Fair Market
Value of which (as of the Exercise Date) is not greater than the amount required
to be withheld, provided that such shares of Stock and/or Depositary Shares have
been owned by the Participant for a period of at least six months;

         (c) if the income resulting from the Option exercise is to be deferred
into the Participant's Deferred Delivery Plan account, by certification or
attestation to the Company or the Administrative Agent of the Participant's
ownership (as of the Exercise Date) of a number of vested Stock Units held in
the Participant's Deferred Delivery Plan account, the equivalent aggregate Fair
Market Value of which (as of the Exercise Date) is not greater than the amount
required to be withheld, provided that such Stock Units were vested as of the
Exercise Date; or

         (d) by the Company or the Administrative Agent withholding from the
shares of Stock otherwise issuable to the Participant upon exercise of the
Option, a number of shares of Stock, the aggregate Fair Market Value of which
(as of the Exercise Date) is not greater than the amount required to be
withheld. Any such elections by Participants to have shares of Stock withheld
for this purpose will be subject to the following restrictions:

         (i)      all elections shall be made on or prior to the Exercise Date;
                  and

         (ii)     all elections shall be irrevocable.

13.3 Excess Withholding. At the time the Committee grants an Option, it may, in
its sole discretion, grant the Participant an election to pay additional or
excess amounts of tax withholding, beyond the required amounts and up to the
Participant's marginal tax rate:



                                      -16-
<PAGE>   18

         (a) by delivery to the Company or the Administrative Agent of a number
of Shares of Stock then owned by the Participant, the aggregate Fair Market
Value of which (as of the Exercise Date) is not greater than such excess
withholding amount, provided that such shares of Stock have been owned by the
Participant for a period of at least six month; or

         (b) by certification or attestation to the Company or the
Administrative Agent of the Participant's ownership (as of the Exercise Date) of
a number of shares of Stock and/or Depositary Shares, the aggregate Fair Market
Value of which (as of the Exercise Date) is not greater than such excess
withholding amount, provided that such shares of Stock and/or Depositary Shares
have been owned by the Participant for a period of at least six months.

13.4 Section 16 Requirements. If the Participant is an officer or director of
the Company within the meaning of Section 16 or any successor section(s) of the
1934 Act ("Section 16"), the Participant must satisfy the requirements of such
Section 16 and any applicable rules and regulations thereunder with respect to
the use of shares of Stock, Depositary Shares and/or Stock Units to satisfy such
tax withholding obligation.

                                   SECTION 14

                               REQUIREMENTS OF LAW

14.1 Requirements of Law. The issuance of stock and the payment of cash pursuant
to the Plan shall be subject to all applicable laws, rules and regulations.

14.2 Federal Securities Law Requirements. If a Participant is an officer or
director of the Company within the meaning of Section 16, Options granted
hereunder shall be subject to all conditions required under Rule 16b-3, or any
successor rule promulgated under the 1934 Act, to qualify the Option for any
exception from the provisions of Section 16(b) of the 1934 Act available under
that Rule. Such conditions are hereby incorporated herein by reference and shall
be set forth in the Stock Option Agreement with the Participant which describes
the Option.

14.3 Governing Law. The Plan and all agreements hereunder shall be construed in
accordance with and governed by the laws of the State of Texas.




                                      -17-
<PAGE>   19



                                   SECTION 15

                              DURATION OF THE PLAN

The Plan shall terminate at such time as may be determined by the Board of
Directors, and no Option shall be granted after such termination. If not sooner
terminated under the preceding sentence, the Plan shall fully cease and expire
at midnight on September 18, 1995. Options outstanding at the time of the Plan
termination may continue to be exercisable in accordance with the Stock Option
Agreement pertaining to each such Option.


Dated:   December 14, 2000


                                            APACHE CORPORATION

ATTEST:

/s/ Cheri L. Peper                          By: /s/ Jeffrey M. Bender
- ---------------------------------               --------------------------------
Cheri L. Peper                                  Jeffrey M. Bender
Corporate Secretary                             Vice President, Human Resources




                                      -18-
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-10.21
<SEQUENCE>3
<FILENAME>h84997ex10-21.txt
<DESCRIPTION>1995 STOCK OPTION PLAN
<TEXT>

<PAGE>   1
                                                                   EXHIBIT 10.21

















                               APACHE CORPORATION

                             1995 STOCK OPTION PLAN

                   (AS AMENDED AND RESTATED DECEMBER 14, 2000;
                         EFFECTIVE AS OF MARCH 1, 2001)















<PAGE>   2




                               APACHE CORPORATION
                             1995 STOCK OPTION PLAN

                   (AS AMENDED AND RESTATED DECEMBER 14, 2000;
                         EFFECTIVE AS OF MARCH 1, 2001)


                                    SECTION 1

                                  INTRODUCTION

1.1 Establishment. Apache Corporation, a Delaware corporation (hereinafter
referred to, together with its Affiliated Corporations (as defined in Section
2.1 hereof) as the "Company" except where the context otherwise requires),
hereby establishes the Apache Corporation 1995 Stock Option Plan (the "Plan")
for certain key employees of the Company. The Plan permits the grant of stock
options to certain key employees of the Company.

1.2 Purposes. The purposes of the Plan are to provide the key management
employees selected for participation in the Plan with added incentives to
continue in the long-term service of the Company and to create in such employees
a more direct interest in the future success of the operations of the Company by
relating incentive compensation to increases in stockholder value, so that the
income of the key management employees is more closely aligned with the
interests of the Company's stockholders. The Plan is also designed to attract
key employees and to retain and motivate participating employees by providing an
opportunity for investment in the Company.

1.3 Effective Date. The Effective Date of the Plan (the "Effective Date") is May
4, 1995. This Plan and each option granted hereunder is conditioned on and shall
be of no force or effect until approval of the Plan by the holders of the shares
of voting stock of the Company unless the Company, on the advice of counsel,
determines that stockholder approval is not necessary. The Committee (as defined
in Section 2.1 hereof) may grant options the exercise of which shall be
expressly subject to the condition that the Plan shall have been approved by the
stockholders of the Company.

                                    SECTION 2

                                   DEFINITIONS

2.1 Definitions. The following terms shall have the meanings set forth below:




                                       1
<PAGE>   3




         (a) "Administrative Agent" means any designee or agent that may be
appointed by the Committee pursuant to Section 3.1(b) hereof.

         (b) "Affiliated Corporation" means any corporation or other entity
(including but not limited to a partnership) which is affiliated with Apache
Corporation through stock ownership or otherwise and is treated as a common
employer under the provisions of Sections 414(b) and (c) or any successor
section(s) of the Internal Revenue Code.

         (c) "Board" means the Board of Directors of the Company.

         (d) "Committee" means the Stock Option Plan Committee of the Board,
which is empowered hereunder to take actions in the administration of the Plan.
The Committee shall be constituted at all times as to permit the Plan to comply
with: (i) Rule 16b-3 or any successor rule(s) promulgated under the Securities
Exchange Act of 1934, as amended (the "1934 Act"), and (ii) Section 162(m) or
any successor section(s) of the Internal Revenue Code and the regulations
promulgated thereunder.

         (e) "Deferred Delivery Plan" means the Company's Deferred Delivery
Plan, effective as of February 10, 2000 and as it may be amended from time to
time, or any successor plan.

         (f) "Depositary Shares" means the depositary shares representing the
Company's preferred stock convertible into Stock.

         (g) "Eligible Employees" means those full-time key employees
(including, without limitation, officers and directors who are also employees)
of the Company or any division thereof, upon whose judgment, initiative and
efforts the Company is, or will become, largely dependent for the successful
conduct of its business.

         (h) "Fair Market Value" means the per share closing price of the Stock
or Depositary Shares, as applicable, as reported on the New York Stock Exchange,
Inc. Composite Transactions Reporting System for a particular date. If on such
date there are no transactions in the Stock or Depositary Shares, as applicable,
the Fair Market Value shall be determined as of the immediately preceding date
on which there were transactions in the Stock or Depositary Shares, as
applicable.

         (i) "Internal Revenue Code" means the Internal Revenue Code of 1986, as
it may be amended from time to time.

         (j) "Option" means a right to purchase shares of Stock at a stated
price for a specified period of time. All Options granted under the Plan shall
be Options which are




                                       2
<PAGE>   4

not "incentive stock options" as described in Section 422 or any successor
section(s) of the Internal Revenue Code.

         (k) "Option Price" means the price at which shares of Stock subject to
an Option may be purchased, determined in accordance with subsection 7.2(b)
hereof.

         (l) "Participant" means an Eligible Employee designated by the
Committee from time to time during the term of the Plan to receive one or more
Options under the Plan.

         (m) "Stock" means the $1.25 par value Common Stock of the Company.

         (n) "Stock Units" means investment units under the Deferred Delivery
Plan, each of which is deemed to be equivalent to one share of Stock.

2.2 Headings; Gender and Number. The headings contained in the Plan are for
reference purposes only and shall not affect in any way the meaning or
interpretation of the Plan. Except when otherwise indicated by the context, the
masculine gender shall also include the feminine gender, and the definition of
any term herein in the singular shall also include the plural.

                                    SECTION 3

                               PLAN ADMINISTRATION

3.1 Administration by the Committee.

         (a) The Plan shall be administered by the Committee. In accordance with
the provisions of the Plan, the Committee shall, in its sole discretion, select
the Participants from among the Eligible Employees, determine the Options to be
granted pursuant to the Plan, the number of shares of Stock to be issued
thereunder, the time at which such Options are to be granted, fix the Option
Price, and establish such other terms and requirements as the Committee may deem
necessary, or desirable and consistent with the terms of the Plan. The Committee
shall determine the form or forms of the agreements with Participants which
shall evidence the particular provisions, terms, conditions, rights and duties
of the Company and the Participants with respect to Options granted pursuant to
the Plan, which provisions need not be identical except as may be provided
herein.

         (b) The Committee may from time to time adopt such rules and
regulations for carrying out the purposes of the Plan as it may deem proper and
in the best interests of the Company. The Committee may appoint an
Administrative Agent, who need not be a member of the Committee or an employee
of the Company, to assist the Committee in




                                       3
<PAGE>   5

administration of the Plan and to whom it may delegate such powers as the
Committee deems appropriate, except that the Committee shall determine any
dispute. The Committee may correct any defect, supply any omission or reconcile
any inconsistency in the Plan, or in any agreement entered into hereunder, in
the manner and to the extent it shall deem expedient and it shall be the sole
and final judge of such expediency. No member of the Committee shall be liable
for any action or determination made in good faith. The determination,
interpretations and other actions of the Committee pursuant to the provisions of
the Plan shall be binding and conclusive for all purposes and on all persons.

3.2 Compliance with Section 162(m).

The Plan is intended to comply with the requirements of Section 162 or any
successor section(s) of the Internal Revenue Code ("Section 162") as to any
"covered employee" as defined in Section 162, and shall be administered,
interpreted and construed consistently therewith. In accordance with this
intent, the amount of income a Participant may receive from Options granted
under the Plan shall be based solely on an increase in the value of the Stock
after the date of the grant of the Option, or such other bases as may be
permitted by applicable law. The Committee is authorized to take such additional
action, if any, that may be required to ensure that the Plan satisfies the
requirements of Section 162 and the regulations promulgated or revenue rulings
published thereunder.

                                    SECTION 4

                            STOCK SUBJECT TO THE PLAN

4.1 Number of Shares. Subject to Section 7.1 and to adjustment pursuant to
Section 4.3 hereof, two million five hundred thousand (2,500,000) shares of
Stock are authorized for issuance under the Plan in accordance with the
provisions of the Plan and subject to such restrictions or other provisions as
the Committee may from time to time deem necessary. This authorization may be
increased from time to time by approval of the Board and the stockholders of the
Company if, on the advice of counsel for the Company, such stockholder approval
is required. Shares of Stock which may be issued upon exercise of Options shall
be applied to reduce the maximum number of shares of Stock remaining available
for use under the Plan. The Company shall at all times during the term of the
Plan and while any Options are outstanding retain as authorized and unissued
Stock, or as Stock in the Company's treasury, at least the number of shares from
time to time required under the provisions of the Plan, or otherwise assure
itself of its ability to perform its obligations hereunder.

4.2 Other Shares of Stock. Any shares of Stock that are subject to an Option
which expires, is forfeited, is cancelled, or for any reason is terminated
unexercised, and any





                                       4
<PAGE>   6

shares of Stock that for any other reason are not issued to a Participant or are
forfeited shall automatically become available for use under the Plan.

4.3 Adjustments for Stock Split, Stock Dividend, Etc. If the Company shall at
any time increase or decrease the number of its outstanding shares of Stock or
change in any way the rights and privileges of such shares by means of the
payment of a Stock dividend or any other distribution upon such shares payable
in Stock, or through a Stock split, subdivision, consolidation, combination,
reclassification or recapitalization involving the Stock, then in relation to
the Stock that is affected by one or more of the above events, the numbers,
rights and privileges of the following shall be increased, decreased or changed
in like manner as if they had been issued and outstanding, fully paid and
nonassessable at the time of such occurrence: (i) the shares of Stock as to
which Options may be granted under the Plan; and (ii) the shares of the Stock
then included in each outstanding Option granted hereunder.

4.4 Dividend Payable in Stock of Another Corporation, Etc. If the Company shall
at any time pay or make any dividend or other distribution upon the Stock
payable in securities or other property (except money or Stock), a proportionate
part of such securities or other property shall be set aside and delivered to
any Participant then holding an Option for the particular type of Stock for
which the dividend or other distribution was made, upon exercise thereof. Prior
to the time that any such securities or other property are delivered to a
Participant in accordance with the foregoing, the Company shall be the owner of
such securities or other property and shall have the right to vote the
securities, receive any dividends payable on such securities, and in all other
respects shall be treated as the owner. If securities or other property which
have been set aside by the Company in accordance with this Section are not
delivered to a Participant because an Option is not exercised, then such
securities or other property shall remain the property of the Company and shall
be dealt with by the Company as it shall determine in its sole discretion.

4.5 Other Changes in Stock. In the event there shall be any change, other than
as specified in Sections 4.3 and 4.4 hereof, in the number or kind of
outstanding shares of Stock or of any stock or other securities into which the
Stock shall be changed or for which it shall have been exchanged, and if the
Committee shall in its discretion determine that such change equitably requires
an adjustment in the number or kind of shares subject to outstanding Options or
which have been reserved for issuance pursuant to the Plan but are not then
subject to an Option, then such adjustments shall be made by the Committee and
shall be effective for all purposes of the Plan and on each outstanding Option
that involves the particular type of stock for which a change was effected.

4.6 Rights to Subscribe. If the Company shall at any time grant to the holders
of its Stock rights to subscribe pro rata for additional shares thereof or for
any other securities of the Company or of any other corporation, there shall be
reserved with respect to the




                                       5
<PAGE>   7

shares then under Option to any Participant of the particular class of Stock
involved the Stock or other securities which the Participant would have been
entitled to subscribe for if immediately prior to such grant the Participant had
exercised his entire Option. If, upon exercise of any such Option, the
Participant subscribes for the additional shares or other securities, the
aggregate Option Price shall be increased by the amount of the price that is
payable by the Participant for such additional shares or other securities.

4.7 General Adjustment Rules. No adjustment or substitution provided for in this
Section 4 shall require the Company to sell a fractional share of Stock under
any Option, or otherwise issue a fractional share of Stock, and the total
substitution or adjustment with respect to each Option shall be limited by
deleting any fractional share. In the case of any such substitution or
adjustment, the aggregate Option Price for the shares of Stock then subject to
the Option shall remain unchanged but the Option Price per share under each such
Option shall be equitably adjusted by the Committee to reflect the greater or
lesser number of shares of Stock or other securities into which the Stock
subject to the Option may have been changed.

4.8 Determination by the Committee, Etc. Adjustments under this Section 4 shall
be made by the Committee, whose determinations with regard thereto shall be
final and binding upon all parties.

                                    SECTION 5

                          REORGANIZATION OR LIQUIDATION

In the event that the Company is merged or consolidated with another corporation
and the Company is not the surviving corporation, or if all or substantially all
of the assets or more than 20 percent of the outstanding voting stock of the
Company is acquired by any other corporation, business entity or person, or in
case of a reorganization (other than a reorganization under the United States
Bankruptcy Code) or liquidation of the Company, and if the provisions of Section
8 hereof do not apply, the Committee, or the board of directors of any
corporation assuming the obligations of the Company, shall, as to the Plan and
outstanding Options either (i) make appropriate provision for the adoption and
continuation of the Plan by the acquiring or successor corporation and for the
protection of any such outstanding Options by the substitution on an equitable
basis of appropriate stock of the Company or of the merged, consolidated or
otherwise reorganized corporation which will be issuable with respect to the
Stock, provided that no additional benefits shall be conferred upon the
Participants holding such Options as a result of such substitution, and the
excess of the aggregate Fair Market Value of the shares subject to the Options
immediately after such substitution over the aggregate Option Price thereof is
not more than the excess of the aggregate Fair Market Value of the shares
subject to such Options immediately before such substitution over the aggregate
Option Price thereof, or





                                       6
<PAGE>   8

(ii) upon written notice to the Participants, provide that all unexercised
Options shall be exercised within a specified number of days of the date of such
notice or such Options will be terminated. In the latter event, the Committee
shall accelerate the vesting dates of outstanding Options so that all Options
become fully vested and exercisable prior to any such event.

                                    SECTION 6

                                  PARTICIPATION

Participants in the Plan shall be those Eligible Employees who, in the judgment
of the Committee, are performing, or during the term of their incentive
arrangement will perform, vital services in the management, operation and
development of the Company or an Affiliated Corporation, and significantly
contribute, or are expected to significantly contribute, to the achievement of
the Company's long-term corporate economic objectives. Participants may be
granted from time to time one or more Options; provided, however, that the grant
of each such Option shall be separately approved by the Committee, and receipt
of one such Option shall not result in automatic receipt of any other Option.
Upon determination by the Committee that an Option is to be granted to a
Participant, written notice shall be given to such person, specifying the terms,
conditions, rights and duties related thereto. Each Participant shall, if
required by the Committee, enter into an agreement with the Company, in such
form as the Committee shall determine and which is consistent with the
provisions of the Plan, specifying such terms, conditions, rights and duties.
Options shall be deemed to be granted as of the date specified in the grant
resolution of the Committee, which date shall be the date of any related
agreement with the Participant. In the event of any inconsistency between the
provisions of the Plan and any such agreement entered into hereunder, the
provisions of the Plan shall govern.

                                    SECTION 7

                                  STOCK OPTIONS

7.1 Grant of Stock Options. Coincident with or following designation for
participation in the Plan, an Eligible Employee may be granted one or more
Options. Grants of Options under the Plan shall be made by the Committee. In no
event shall the exercise of one Option affect the right to exercise any other
Option or affect the number of shares of Stock for which any other Option may be
exercised, except as provided in subsection 7.2(j) hereof. During the life of
the Plan, no Eligible Employee may be granted Options which in the aggregate
pertain to in excess of 25 percent of the total shares of Stock authorized under
the Plan.




                                       7
<PAGE>   9

7.2 Stock Option Agreements. Each Option granted under the Plan shall be
evidenced by a written stock option agreement which shall be entered into by the
Company and the Participant to whom the Option is granted (the "Stock Option
Agreement"), and which shall contain the following terms and conditions, as well
as such other terms and conditions, not inconsistent therewith, as the Committee
may consider appropriate in each case.

         (a) Number of Shares. Each Stock Option Agreement shall state that it
covers a specified number of shares of Stock, as determined by the Committee.

         (b) Price. The price at which each share of Stock covered by an Option
may be purchased shall be determined in each case by the Committee and set forth
in the Stock Option Agreement, but in no event shall the price be less than the
Fair Market Value of the Stock on the date the Option is granted.

         (c) Duration of Options; Employment Required For Exercise. Each Stock
Option Agreement shall state the period of time, determined by the Committee,
within which the Option may be exercised by the Participant (the "Option
Period"). The Option Period must end, in all cases, not more than ten years from
the date an Option is granted. Except as otherwise provided in Sections 5 and 8
and subsection 7.2(d)(iv) hereof, each Option granted under the Plan shall
become exercisable in increments such that 25 percent of the Option will become
exercisable on each of the four subsequent one-year anniversaries of the date
the Option is granted, but each such additional 25-percent increment shall
become exercisable only if the Participant has been continuously employed by the
Company from the date the Option is granted through the date on which each such
additional 25-percent increment becomes exercisable.

         (d) Termination of Employment, Death, Disability, Etc. Each Stock
Option Agreement shall provide as follows with respect to the exercise of the
Option upon termination of the employment or the death of the Participant:

                  (i) If the employment of the Participant by the Company is
terminated within the Option Period for cause, as determined by the Company, the
Option shall thereafter be void for all purposes. As used in this subsection
7.2(d), "cause" shall mean a gross violation, as determined by the Company, of
the Company's established policies and procedures, provided that the effect of
this subsection 7.2(d) shall be limited to determining the consequences of a
termination and that nothing in this subsection 7.2(d) shall restrict or
otherwise interfere with the Company's discretion with respect to the
termination of any employee.

                  (ii) If the Participant retires from employment by the Company
on or after attaining age 65, the Option may be exercised by the Participant
within 36 months





                                       8
<PAGE>   10

following his or her retirement (provided that such exercise must occur within
the Option Period), but not thereafter. In the event of the Participant's death
during such 36-month period, each Option may be exercised by those entitled to
do so in the manner referred to in (iv) below. In any such case the Option may
be exercised only as to the shares as to which the Option had become exercisable
on or before the date of the Participant's retirement.

                  (iii) If the Participant becomes disabled (as determined
pursuant to the Company's Long-Term Disability Plan or any successor plan),
during the Option Period while still employed, or within the three-month period
referred to in (v) below, or within the 36-month period referred to in (ii)
above, the Option may be exercised by the Participant or by his or her guardian
or legal representative, within twelve months following the Participant's
disability, or within the 36-month period referred to in (ii) if applicable and
if longer (provided that such exercise must occur within the Option Period), but
not thereafter. In the event of the Participant's death during such twelve-month
period, each Option may be exercised by those entitled to do so in the manner
referred to in (iv) below. In any such case, the Option may be exercised only as
to the shares of Stock as to which the Option had become exercisable on or
before the date of the Participant's disability.

                  (iv) In the event of the Participant's death while still
employed by the Company, each Option of the deceased Participant may be
exercised by those entitled to do so under the Participant's will or under the
laws of descent and distribution within twelve months following the
Participant's death (provided that in any event such exercise must occur within
the Option Period), but not thereafter, as to all shares of Stock which are
subject to such Option, including each 25-percent increment of the Option, if
any, which has not yet become exercisable at the time of the Participant's
death. In the event of the Participant's death within the 36-month period
referred to in (ii) above or within the twelve-month period referred to in (iii)
above, each Option of the deceased Participant that is exercisable at the time
of death may be exercised by those entitled to do so under the Participant's
will or under the laws of descent and distribution within twelve months
following the Participant's death or within the 36-month period referred to in
(ii), if applicable and if longer (provided that in any event such exercise must
occur within the Option Period). The provisions of this paragraph (iv) of
subsection 7.2(d) shall be applicable to each Stock Option Agreement as if set
forth therein word for word. Each Stock Option Agreement executed by the Company
prior to the adoption of this provision shall be deemed amended to include the
provisions of this paragraph and all Options granted pursuant to such Stock
Option Agreements shall be exercisable as provided herein.

                  (v) If the employment of the Participant by the Company is
terminated (which for this purpose means that the Participant is no longer
employed by the Company




                                       9
<PAGE>   11

or by an Affiliated Corporation) within the Option Period for any reason other
than cause, the Participant's retirement on or after attaining age 65, the
Participant's disability or death, the Option may be exercised by the
Participant within three months following the date of such termination (provided
that such exercise must occur within the Option Period), but not thereafter. In
any such case, the Option may be exercised only as to the shares as to which the
Option had become exercisable on or before the date of termination of the
Participant's employment.

         (e) Transferability. Each Stock Option Agreement shall provide that the
Option granted therein is not transferable by the Participant except by will or
pursuant to the laws of descent and distribution, and that such Option is
exercisable during the Participant's lifetime only by him or her, or in the
event of the Participant's disability or incapacity, by his or her guardian or
legal representative.

         (f) Agreement to Continue in Employment. Each Stock Option Agreement
shall contain the Participant's agreement to remain in the employment of the
Company, at the pleasure of the Company, for a continuous period of at least one
year after the date of such Stock Option Agreement, at the salary rate in effect
on the date of such agreement or at such changed rate as may be fixed, from time
to time, by the Company.

         (g) Exercise, Payments, Etc.

                  (i) Each Stock Option Agreement shall provide that the method
for exercising the Option granted therein shall be by delivery to the Office of
the Secretary of the Company or to the Administrative Agent of written notice
specifying the number of shares of Stock with respect to which such Option is
exercised and payment to the Company of the aggregate Option Price. Such notice
shall be in a form satisfactory to the Committee and shall specify the
particular Options (or portions thereof) which are being exercised and the
number of shares of Stock with respect to which the Options are being exercised.
The exercise of the Option shall be deemed effective on the date such notice is
received by the Office of the Secretary or by the Administrative Agent and
payment is made to the Company of the aggregate Option Price (the "Exercise
Date"); however, if payment of the aggregate Option Price is made pursuant to a
sale of shares of Stock as contemplated by subsection 7.2(g)(iii)(F) below, the
Exercise Date shall be deemed to be the date of such sale. If requested by the
Company, such notice shall contain the Participant's representation that he or
she is purchasing the Stock for investment purposes only and his or her
agreement not to sell any Stock so purchased in any manner that is in violation
of the Securities Act of 1933, as amended, or any applicable state law, and such
restriction, or notice thereof, shall be placed on the certificates representing
the Stock so purchased. The purchase of such Stock shall take place upon
delivery of such notice to the Office of the Secretary of the Company or to the
Administrative Agent, at which time







                                       10
<PAGE>   12

the aggregate Option Price shall be paid in full to the Company by any of the
methods or any combination of the methods set forth in 7.2(g)(iii) below.

                  (ii) Except as referenced below in connection with the
Deferred Delivery Plan, the shares of Stock to which the Participant is entitled
as a result of the exercise of the Option shall be issued by the Company and (A)
delivered by electronic means to an account designated by the Participant, or
(B) delivered to the Participant in the form of a properly executed certificate
or certificates representing such shares of Stock. If shares of Stock and/or
Depositary Shares are used to pay all or part of the aggregate Option Price, the
Company shall issue and deliver to the Participant the additional shares of
Stock, in excess of the aggregate Option Price or portion thereof paid using
shares of Stock or Depositary Shares, to which the Participant is entitled as a
result of the Option exercise. If the Participant exercising an Option (x) is
eligible for participation in the Deferred Delivery Plan, (y) pays the aggregate
Option Price pursuant to 7.2(g)(iii)(A), (B), (C), (D) or (E) below, and (z) has
made an irrevocable election at least six months prior to the Exercise Date as
required under the Deferred Delivery Plan, the income resulting from the Option
exercise shall be deferred into the Participant's Deferred Delivery Plan account
and no additional shares of Stock shall be delivered to the Participant.

                  (iii) the aggregate Option Price shall be paid by any of the
following methods or any combination of the following methods:

                           (A) in cash, including the wire transfer of funds in
U.S. dollars to one of the Company's bank accounts located in the United States,
with such bank account to be designated from time to time by the Company;

                           (B) by personal, certified or cashier's check payable
in U.S. dollars to the order of the Company;

                           (C) by delivery to the Company or the Administrative
Agent of certificates representing a number of shares of Stock then owned by the
Participant, the aggregate Fair Market Value of which (as of the Exercise Date)
is not greater than the aggregate Option Price of the Option being exercised,
properly endorsed for transfer to the Company; provided that the shares of Stock
used for this purpose must have been owned by the Participant for a period of at
least six months;

                           (D) by certification or attestation to the Company or
the Administrative Agent of the Participant's ownership as of the Exercise Date
of the number of shares of Stock and/or Depositary Shares, the aggregate Fair
Market Value of which (as of the Exercise Date) is not greater than the
aggregate Option Price of the Option being exercised, provided that the shares
of Stock and/or Depositary Shares used for this purpose have been owned by the
Participant for a period of at least six months;




                                       11
<PAGE>   13

                           (E) if the income resulting from the Option exercise
is to be deferred into the Participant's Deferred Delivery Plan account, by
certification or attestation to the Company or the Administrative Agent of the
Participant's ownership (as of the Exercise Date) of a number of vested Stock
Units held in the Participant's Deferred Delivery Plan account, the equivalent
aggregate Fair Market Value of which (as of the Exercise Date) is not greater
than the aggregate Option Price of the Option being exercised, provided that the
Stock Units used for this purpose were vested as of the Exercise Date; or

                           (F) by delivery to the Company or the Administrative
Agent of a properly executed notice of exercise together with irrevocable
instructions to a broker to promptly deliver to the Company, by wire transfer or
check as noted in (A) and (B) above, the amount of the proceeds of the sale of
all or a portion of the Stock or of a loan from the broker to the Participant
necessary to pay the aggregate Option Price.

                  (iv) For purposes of the Plan, the income resulting from an
Option exercise shall be based on the Fair Market Value of the Stock for the
Exercise Date; however, if payment of the aggregate Option Price is made
pursuant to a sale of shares of Stock as contemplated by subsection
7.2(g)(iii)(F) hereof, the Fair Market Value shall be deemed to be the per share
sale price and the Exercise Date shall be deemed to be the date of such sale.

         (h) Date of Grant. An Option shall be considered as having been granted
on the date specified in the grant resolution of the Committee.

         (i) Tax Withholding. Each Stock Option Agreement shall provide that,
upon exercise of the Option, the Participant shall make appropriate arrangements
with the Company to provide for the amount of tax withholding required by
Sections 3102 and 3402 or any successor section(s) of the Internal Revenue Code
and applicable state and local income tax laws, including payment of such taxes
in cash, by check or as provided in Section 13.2 hereof.

         (j) Adjustment of Options. Subject to the provisions of Sections 4, 5,
7, 8 and 12 hereof, the Committee may make any adjustment in the number of
shares of Stock covered by, or the terms of an outstanding Option and a
subsequent granting of an Option, by amendment or by substitution for an
outstanding Option; however, except as provided in Sections 4, 5, 8 and 12
hereof, the Committee may not adjust the Option Price of any outstanding Option.
Such amendment or substitution may result in terms and conditions (including the
number of shares of Stock covered, vesting schedule or Option Period) that
differ from the terms and conditions of the original Option. The Committee may
not, however, adversely affect the rights of any Participant to previously
granted





                                       12
<PAGE>   14

Options without the consent of such Participant. If such action is effected by
amendment, the effective date of such amendment will be the date of grant of the
original Option.

7.3 Stockholder Privileges. No Participant shall have any rights as a
stockholder with respect to any shares of Stock covered by an Option until the
Participant becomes the holder of record of such Stock. Except as provided in
Section 4 hereof, no adjustments shall be made for dividends or other
distributions or other rights as to which there is a record date preceding the
date on which such Participant becomes the holder of record of such Stock.

                                    SECTION 8

                                CHANGE IN CONTROL

8.1 In General. In the event of a change in control of the Company as defined in
Section 8.3 hereof, then the Committee may, in its sole discretion, without
obtaining stockholder approval, to the extent permitted in Section 12 hereof,
take any or all of the following actions: (a) accelerate the dates on which any
outstanding Options become exercisable or make all such Options fully vested and
exercisable; (b) grant a cash bonus award to any Participant in an amount
necessary to pay the aggregate Option Price of all or any portion of the Options
then held by such Participant; (c) pay cash to any or all Participants in
exchange for the cancellation of their outstanding Options in an amount equal to
the difference between the Option Price of such Options and the greater of the
tender offer price for the underlying Stock or the Fair Market Value of the
Stock on the date of the cancellation of the Options; and (d) make any other
adjustments or amendments to the outstanding Options.

8.2 Limitation on Payments. If the provisions of this Section 8 would result in
the receipt by any Participant of a payment within the meaning of Section 280G
or any successor section(s) of the Internal Revenue Code, and the regulations
promulgated thereunder, and if the receipt of such payment by any Participant
would, in the opinion of independent tax counsel of recognized standing selected
by the Company, result in the payment by such Participant of any excise tax
provided for in Sections 280G and 4999 or any successor section(s) of the
Internal Revenue Code, then the amount of such payment shall be reduced to the
extent required, in the opinion of independent tax counsel, to prevent the
imposition of such excise tax; provided, however, that the Committee, in its
sole discretion, may authorize the payment of all or any portion of the amount
of such reduction to the Participant.

8.3 Definition. For purposes of the Plan, a "change in control" shall mean any
of the events specified in the Company's Income Continuance Plan or any
successor plan which constitute a change in control within the meaning of such
plan.




                                       13
<PAGE>   15

                                    SECTION 9

                        RIGHTS OF EMPLOYEES, PARTICIPANTS

9.1 Employment. Nothing contained in the Plan or in any Option granted under the
Plan shall confer upon any Participant any right with respect to the
continuation of his or her employment by the Company or any Affiliated
Corporation, or interfere in any way with the right of the Company or any
Affiliated Corporation, subject to the terms of any separate employment
agreement to the contrary, at any time to terminate such employment or to
increase or decrease the level of the Participant's compensation from the level
in existence at the time of the grant of an Option. Whether an authorized leave
of absence, or absence in military or government service, shall constitute a
termination of employment shall be determined by the Committee at the time.

9.2 Nontransferability. No right or interest of any Participant in an Option
granted pursuant to the Plan shall be assignable or transferable during the
lifetime of the Participant, either voluntarily or involuntarily, or subjected
to any lien, directly or indirectly, by operation of law, or otherwise,
including execution, levy, garnishment, attachment, pledge or bankruptcy. In the
event of a Participant's death, a Participant's rights and interests in Options
shall, to the extent provided in Section 7 hereof, be transferable by
testamentary will or the laws of descent and distribution, and payment of any
amounts due under the Plan shall be made to, and exercise of any Options may be
made by, the Participant's legal representatives, heirs or legatees. If in the
opinion of the Committee, a person entitled to payments or to exercise rights
with respect to the Plan is disabled from caring for his or her affairs because
of mental condition, physical condition or age, payment due such person may be
made to, and such rights shall be exercised by, such person's guardian,
conservator or other legal personal representative upon furnishing the Committee
with evidence of such status satisfactory to the Committee.

                                   SECTION 10

                              GENERAL RESTRICTIONS

10.1 Investment Representations. The Company may require a Participant, as a
condition of exercising an Option, to give written assurances in substance and
form satisfactory to the Company and its counsel to the effect that such person
is acquiring the Stock subject to the Option for his own account for investment
and not with any present intention of selling or otherwise distributing the
same, and to such other effects as the Company deems necessary or appropriate in
order to comply with federal and applicable state securities laws.




                                       14
<PAGE>   16

10.2 Compliance with Securities Laws. Each Option shall be subject to the
requirement that, if at any time counsel to the Company shall determine that the
listing, registration or qualification of the shares of Stock subject to such
Option upon any securities exchange or under any state or federal law, or the
consent or approval of any governmental or regulatory body, is necessary as a
condition of, or in connection with, the issuance or purchase of shares of Stock
thereunder, such Option may not be accepted or exercised in whole or in part
unless such listing, registration, qualification, consent or approval shall have
been effected or obtained on conditions acceptable to the Committee. Nothing
herein shall be deemed to require the Company to apply for or to obtain such
listing, registration, qualification, consent or approval.

                                   SECTION 11

                             OTHER EMPLOYEE BENEFITS

The amount of any income deemed to be received by a Participant as a result of
an Option exercise shall not constitute "earnings" or "compensation" with
respect to which any other employee benefits of such Participant are determined
including, without limitation benefits under any pension, profit sharing, life
insurance or salary continuation plan.

                                   SECTION 12

                  PLAN AMENDMENT, MODIFICATION AND TERMINATION

The Board may at any time terminate, and from time to time may amend or modify
the Plan provided, however, that no amendment or modification may become
effective without approval of the amendment or modification by the Company's
stockholders if stockholder approval is required to enable the Plan to satisfy
any applicable statutory or regulatory requirements unless the Company, on the
advice of counsel, determines that stockholder approval is otherwise necessary
or desirable.

No amendment, modification or termination of the Plan shall in any manner
adversely affect any Option theretofore granted under the Plan, without the
consent of the Participant holding such Option.

The Committee shall have the authority to adopt such modifications, procedures
and subplans as may be necessary or desirable to comply with the provisions of
the laws (including, but not limited to, tax laws and regulations) of countries
other than the United States in which the Company may operate, so as to assure
the viability of the benefits of the Plan to Participants employed in such
countries.




                                       15
<PAGE>   17



                                   SECTION 13

                                   WITHHOLDING

13.1 Withholding Requirement. The Company's obligations to deliver shares of
Stock upon the exercise of an Option, or to defer income resulting from an
Option exercise into the Deferred Delivery Plan, shall be subject to the
Participant's satisfaction of all applicable federal, state and local income and
other tax withholding requirements.

13.2 Satisfaction of Required Withholding. At the time the Committee grants an
Option, it may, in its sole discretion, grant the Participant an election to pay
all such amounts of required tax withholding, or any part thereof:

         (a) by the delivery to the Company or the Administrative Agent of a
number of shares of Stock then owned by the Participant, the aggregate Fair
Market Value of which (as of the Exercise Date) is not greater than the amount
required to be withheld, provided that such shares have been held by the
Participant for a period of at least six months;

         (b) by certification or attestation to the Company or the
Administrative Agent of the Participant's ownership (as of the Exercise Date) of
a number of shares of Stock and/or Depositary Shares, the aggregate Fair Market
Value of which (as of the Exercise Date) is not greater than the amount required
to be withheld, provided that such shares of Stock and/or Depositary Shares have
been owned by the Participant for a period of at least six months;

         (c) if the income resulting from the Option exercise is to be deferred
into the Participant's Deferred Delivery Plan account, by certification or
attestation to the Company or the Administrative Agent of the Participant's
ownership (as of the Exercise Date) of a number of vested Stock Units held in
the Participant's Deferred Delivery Plan account, the equivalent aggregate Fair
Market Value of which (as of the Exercise Date) is not greater than the amount
required to be withheld, provided that such Stock Units were vested as of the
Exercise Date; or

         (d) by the Company or the Administrative Agent withholding from the
shares of Stock otherwise issuable to the Participant upon exercise of the
Option, a number of shares of Stock, the aggregate Fair Market Value of which
(as of the Exercise Date) is not greater than the amount required to be
withheld. Any such elections by Participants to have shares of Stock withheld
for this purpose will be subject to the following restrictions:



                                       16
<PAGE>   18


                  (i)      all elections shall be made on or prior to the
                           Exercise Date; and

                  (ii)     all elections shall be irrevocable.

13.3 Excess Withholding. At the time the Committee grants an Option, it may, in
its sole discretion, grant the Participant an election to pay additional or
excess amounts of tax withholding, beyond the required amounts and up to the
Participant's marginal tax rate:

         (a) by delivery to the Company or the Administrative Agent of a number
of Shares of Stock then owned by the Participant, the aggregate Fair Market
Value of which (as of the Exercise Date) is not greater than such excess
withholding amount, provided that such shares of Stock have been owned by the
Participant for a period of at least six months; or

         (b) by certification or attestation to the Company or the
Administrative Agent of the Participant's ownership (as of the Exercise Date) of
a number of shares of Stock and/or Depositary Shares, the aggregate Fair Market
Value of which (as of the Exercise Date) is not greater than such excess
withholding amount, provided that such shares of Stock and/or Depositary Shares
have been owned by the Participant for a period of at least six months.

13.4 Section 16 Requirements. If the Participant is an officer or director of
the Company within the meaning of Section 16 or any successor section(s) of the
1934 Act ("Section 16"), the Participant must satisfy the requirements of such
Section 16 and any applicable rules and regulations thereunder with respect to
the use of shares of Stock, Depositary Shares and/or Stock Units to satisfy such
tax withholding obligation.

                                   SECTION 14

                               REQUIREMENTS OF LAW

14.1 Requirements of Law. The issuance of Stock and the payment of cash pursuant
to the Plan shall be subject to all applicable laws, rules and regulations.

14.2 Federal Securities Laws Requirements. If a Participant is an officer or
director of the Company within the meaning of Section 16, Options granted
hereunder shall be subject to all conditions required under Rule 16b-3, or any
successor rule(s) promulgated under the 1934 Act, to qualify the Option for any
exception from the provisions of Section 16 available under such Rule. Such
conditions are hereby incorporated herein by reference and shall be set forth in
the Stock Option Agreement with the Participant which describes the Option.




                                       17
<PAGE>   19

14.3 Governing Law. The Plan and all Stock Option Agreements hereunder shall be
construed in accordance with and governed by the laws of the State of Texas.

                                   SECTION 15

                              DURATION OF THE PLAN

The Plan shall terminate at such time as may be determined by the Board, and no
Option shall be granted after such termination. If not sooner terminated under
the preceding sentence, the Plan shall fully cease and expire at midnight on May
4, 2000. Options outstanding at the time of the Plan termination shall continue
to be exercisable in accordance with the Stock Option Agreement pertaining to
each such Option.


Dated:    December 14, 2000


                                            APACHE CORPORATION

ATTEST:

/s/ Cheri L. Peper                          By: /s/ Jeffrey M. Bender
- -----------------------------------             --------------------------------
Cheri L. Peper                                  Jeffrey M. Bender
Corporate Secretary                             Vice President, Human Resources





                                       18
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-10.22
<SEQUENCE>4
<FILENAME>h84997ex10-22.txt
<DESCRIPTION>2000 SHARE APPRECIATION PLAN
<TEXT>

<PAGE>   1
                                                                   EXHIBIT 10.22














                               APACHE CORPORATION


                          2000 SHARE APPRECIATION PLAN

                                   120 BY '04




<PAGE>   2


                               TABLE OF CONTENTS

<TABLE>
<CAPTION>

                                                                           PAGE
                                                                           ----
<S>    <C>  <C>                                                            <C>
Section 1 - Introduction......................................................1

       1.1   Establishment....................................................1
       1.2   Purposes.........................................................1

Section 2 - Definitions.....................................................1-6

       2.1   Definitions....................................................1-6
       2.2   Headings; Gender and Number......................................6

Section 3 - Plan Administration...............................................6

Section 4 - Stock Subject to the Plan.........................................7

       4.1   Number of Shares.................................................7
       4.2   Other Shares of Stock............................................7
       4.3   Certain Adjustments..............................................7

Section 5 - Reorganization or Liquidation.....................................8

Section 6 - Grant of Plan Units............................................8-12

       6.1   Grants...........................................................8
       6.2   Grant Agreements.................................................9

             6.2.1    Grant Terms.............................................9
             6.2.2    Payment of Payout Amounts............................9-10

       6.3   Termination of Employment, Death, Disability, etc...............10
       6.4   Payment and Tax Withholding..................................11-12
       6.5   Subsequent Grant Agreements.....................................12
       6.6   Stockholder Privileges..........................................12
       6.7   Limitations on Stock Issuable to Officers and Directors.........12
       6.8   Deferral of Income..............................................12
</TABLE>

<PAGE>   3

<TABLE>

<S>    <C>  <C>                                                              <C>
Section 7 - Change in Control.................................................13

       7.1    In General......................................................13
       7.2    Limitation on Payments..........................................13
       7.3    Definition......................................................13

Section 8 - Rights of Employees, Participants.................................14

       8.1    Employment......................................................14
       8.2    Non-transferability.............................................14

Section 9 - Other Employee Benefits...........................................14

Section 10 - Plan Amendment, Modification and Termination.....................15

Section 11 - Requirements of Law..............................................15

       11.1   Requirements of Law.............................................15
       11.2   Section 16 Requirements.........................................15
       11.3   Governing Law...................................................15

Section 12 - Duration of the Plan.............................................16
</TABLE>



<PAGE>   4


                               APACHE CORPORATION

                          2000 SHARE APPRECIATION PLAN


                                    SECTION 1

                                  INTRODUCTION

1.1 Establishment. Apache Corporation, a Delaware corporation (hereinafter
referred to, together with its Affiliated Corporations (as defined below) as the
"Company" except where the context otherwise requires), hereby establishes the
Apache Corporation 2000 Share Appreciation Plan (the "Plan"), effective as of
October 12, 2000.

1.2 Purposes. The primary purpose of this Plan is to focus the energies of the
Company's employees on significantly increasing shareholder wealth through stock
price appreciation to share prices of $100, $120 and $180 and a doubling of the
Company's currently projected oil and gas production per share for calendar year
2000. The share price goals of this Plan seek to increase shareholder wealth by
approximately $5.2 to $7.8 billion dollars with the Company's employees sharing
in approximately three percent of the additional shareholder value created. The
production goal is designed to inspire the Company's employees to significantly
improve the one factor that is most within the control of the Company,
production, and that is involved in determining the Company's earnings per share
and cash flow per share. Additional purposes of this Plan include the retention
of existing key employees and as an additional inducement in the recruitment of
talented personnel in a competitive environment.

                                    SECTION 2

                                   DEFINITIONS

2.1 Definitions. The following terms shall have the meanings set forth below:


         "Affiliated Corporation" means any corporation or other entity
(including but not limited to a partnership) which is affiliated with Apache
Corporation through stock ownership or otherwise and is treated as a common
employer under the provisions of Sections 414(b) and (c) or any successor
section(s) of the Internal Revenue Code.


                                       1
<PAGE>   5


         "Base Salary" means, with regard to any Participant, such Participant's
base compensation as an employee of the Company at the date of award of a Plan
Unit (except for the calculation of the Independent Production Goal Amount, in
which case the date shall be the Independent Production Goal Date), without
regard to any bonus, pension, profit sharing, stock option, life insurance or
salary continuation plan which the Participant either receives or is otherwise
entitled to have paid on his behalf.

         "Board" means the Board of Directors of the Company.

         "Category" means one of the three groupings of Participants in the Plan
whose Plan Units represent the right to receive the same multiple of their base
salary for each Payout Amount.

         "Committee" means the Stock Option Plan Committee of the Board or such
other Committee of the Board that is empowered hereunder to administer the Plan.
The Committee shall be constituted at all times so as to permit the Plan to be
administered by "non-employee directors" (as defined in Rule 16b-3 of the
Securities Exchange Act of 1934, as amended).

         "Deferred Delivery Plan" means the Company's Deferred Delivery Plan,
effective as of February 10, 2000, as it may be amended from time to time, or
any successor plan.

         "Eligible Employees" means those full-time employees (including,
without limitation, the Company's executive officers), and certain part-time
employees, of the Company.

         "Fair Market Value" means the closing price of the Stock as reported on
The New York Stock Exchange, Inc. Composite Transactions Reporting System
("Composite Tape") for a particular date. If there are no Stock transactions on
such date, the Fair Market Value shall be determined as of the immediately
preceding date on which there were Stock transactions.

         "Final Amount" means with regard to any:

                  (a) Category I Participant, such number of shares of Stock
         (rounded down to the nearest full share) which equals two (2) times
         such Participant's Base Salary divided by $180;

                  (b) Category II Participant, such number of shares of Stock
         (rounded down to the nearest full share) which equals one (1) times
         such Participant's Base Salary divided by $180; and


                                       2
<PAGE>   6


                  (c) Category III Participant, such number of shares of Stock
         (rounded down to the nearest full share) which equals 50 percent (.50)
         times such Participant's Base Salary divided by $180;

         which amount, in each case, shall be fixed and not subject to
         adjustment due to market fluctuation.

         "Final Price Threshold Date" means the last of any 10 trading days
(which need not be consecutive) during any period of 30 consecutive trading days
occurring prior to January 1, 2005, but not thereafter, on each of which 10 days
the closing price of the Stock as reported on the Composite Tape equaled or
exceeded $180 per share. If the above trading criteria are met more than once,
the first occurrence shall be deemed to be the Final Price Threshold Date.

         "Final Plan Unit" means an investment unit convertible into the
applicable Final Amount for a Participant upon occurrence of the Final Price
Threshold Date.

         "Grant" has the meaning set forth in Section 6 hereof.

         "Grant Agreement" has the meaning set forth in Section 6 hereof.

         "Independent Production Goal Amount" means with regard to any:

                  (a) Category I Participant, such number of shares of Stock
         (rounded down to the nearest full share) which equals one and one half
         (1.5) times such Participant's Base Salary divided by the Independent
         Production Goal Price;

                  (b) Category II Participant, such number of shares of Stock
         (rounded down to the nearest full share) which equals 75 percent (.75)
         times such Participant's Base Salary divided by the Independent
         Production Goal Price; and

                  (c) Category III Participant, such number of shares of Stock
         (rounded down to the nearest full share) which equals 37.5 percent
         (.375) times such Participant's Base Salary divided by the Independent
         Production Goal Price;

         which amount, in each case, shall be fixed and not subject to
         adjustment due to market fluctuation.


                                       3
<PAGE>   7


         "Independent Production Goal Date" means the last day of any fiscal
quarter ending on or before December 31, 2004 during which fiscal quarter the
Company's average daily production (calculated on an annualized basis) equals or
exceeds 1.54 barrels of oil equivalent per outstanding share of Stock
(calculated on a fully diluted basis), as confirmed by the Company's independent
auditors. If the above production criterion is met more than once, the first
occurrence shall be deemed to be the Independent Production Goal Date.

         "Independent Production Goal Price" means the average daily closing
price of the Stock as reported on the Composite Tape for the quarter ending on
the Independent Production Goal Date.

         "Independent Production Goal Plan Unit" means an investment unit
convertible into the applicable Independent Production Goal Amount for a
Participant upon occurrence of the Independent Production Goal Date.

         "Initial Amount" means with regard to any:

                  (a) Category I Participant, such number of shares of Stock
         (rounded down to the nearest full share) which equals one (1) times
         such Participant's Base Salary divided by $100;

                  (b) Category II Participant, such number of shares of Stock
         (rounded down to the nearest full share) which equals 50 percent (.50)
         times such Participant's Base Salary divided by $100; and

                  (c) Category III Participant, such number of shares of Stock
         (rounded down to the nearest full share) which equals 25 percent (.25)
         times such Participant's Base Salary divided by $100;

         which amount, in each case, shall be fixed and not subject to
         adjustment due to market fluctuation.

         "Initial Price Threshold Date" means the last of any 10 trading days
(which need not be consecutive) during any period of 30 consecutive trading days
occurring prior to January 1, 2005, but not thereafter, on each of which 10 days
the closing price of the Stock as reported on the Composite Tape equaled or
exceeded $100 per share. If the above trading criteria are met more than once,
the first occurrence shall be deemed to be the Final Price Threshold Date.


                                       4
<PAGE>   8


         "Initial Plan Unit" means an investment unit convertible into the
applicable Initial Amount for a Participant upon occurrence of the Initial Price
Threshold Date.

         "Internal Revenue Code" means the Internal Revenue Code of 1986, as it
may be amended from time to time.

         "Participant" means an Eligible Employee designated by the Committee
from time to time during the term of the Plan to receive one or more grants of
Plan Units under the Plan.

         "Payout Amounts" means the Initial Amount, the Secondary Amount, the
Final Amount and/or the Independent Production Goal Amount.

         "Plan Units" means each of the Initial Plan Units, Secondary Plan
Units, Final Plan Units and/or Independent Production Goal Plan Units.

         "Price Threshold Date" means the Initial Price Threshold Date, the
Secondary Price Threshold Date, the Final Price Threshold Date and/or the
Independent Production Goal Date, as the context may require.

         "Secondary Amount" means with regard to any:

                  (a) Category I Participant, such number of shares of Stock
         (rounded down to the nearest full share) which equals three (3) times
         such Participant's Base Salary divided by $120;

                  (b) Category II Participant, such number of shares of Stock
         (rounded down to the nearest full share) which equals one and one half
         (1.5) times such Participant's Base Salary divided by $120; and

                  (c) Category III Participant, such number of shares of Stock
         (rounded down to the nearest full share) which equals 75 percent (.75)
         times such Participant's Base Salary divided by $120;

         which amount, in each case, shall be fixed and not subject to
         adjustment due to market fluctuation.


                                       5
<PAGE>   9


         "Secondary Price Threshold Date" means the last of any 10 trading days
(which need not be consecutive) during any period of 30 consecutive trading days
occurring prior to January 1, 2005, but not thereafter, on each of which 10 days
the closing price of the Stock as reported on the Composite Tape equaled or
exceeded $120 per share. If the above trading criteria are met more than once,
the first occurrence shall be deemed to be the Secondary Price Threshold Date.

         "Secondary Plan Unit" means an investment unit convertible into the
applicable Secondary Amount for a Participant upon occurrence of the Secondary
Price Threshold Date.

         "Stock" means the $1.25 par value Common Stock of the Company.

         "Stock Units" means investment units under the Deferred Delivery Plan,
each of which is deemed to be equivalent to one share of Stock.

2.2 Headings; Gender and Number. The headings contained in the Plan are for
reference purposes only and shall not affect in any way the meaning or
interpretation of the Plan. Except when otherwise indicated by the context, the
masculine gender shall also include the feminine gender, and the definition of
any term herein in the singular shall also include the plural.

                                    SECTION 3

                               PLAN ADMINISTRATION

The Plan shall be administered by the Committee. In accordance with the
provisions of the Plan, the Committee shall, in its sole discretion, adopt rules
and regulations for carrying out the purposes of the Plan, including, without
limitation, selecting the Participants from among the Eligible Employees and the
Category of participation for each Participant, appointing designees or agents
(who need not be members of the Committee or employees of the Company) to assist
the Committee with the administration of the Plan, and establish such other
terms and requirements as the Committee may deem necessary or desirable and
consistent with the terms of the Plan. No member of the Committee shall be
liable for any action or determination made in good faith. The determinations,
interpretations and other actions of the Committee pursuant to the provisions of
the Plan shall be binding and conclusive for all purposes and on all persons.


                                       6
<PAGE>   10


                                    SECTION 4

                            STOCK SUBJECT TO THE PLAN

4.1 Number of Shares. Subject to Sections 4.3 and Section 6.1 hereof, up to
three million five hundred thousand (3,500,000) shares of Stock are authorized
for issuance under the Plan upon conversion of any Plan Units in accordance with
the Plan's terms and subject to such restrictions or other provisions as the
Committee may from time to time deem necessary. Shares of Stock which may be
issued pursuant to the conversion of any Plan Units awarded hereunder shall be
applied to reduce the maximum number of shares of Stock remaining available for
use under the Plan. The Company shall at all times during the term of the Plan
and while any Plan Units are outstanding retain as authorized and unissued Stock
and/or Stock in the Company's treasury, at least the number of shares from time
to time required under the provisions of the Plan, or otherwise assure itself of
its ability to perform its obligations hereunder.

4.2 Other Shares of Stock. Any shares of Stock that are subject to issuance upon
conversion of a Plan Unit which expires, is forfeited, is cancelled, or for any
reason is terminated, and any shares of Stock that for any other reason are not
issued to a Participant or are forfeited shall automatically become available
for use under the Plan.

4.3 Certain Adjustments. If the Company shall at any time increase or decrease
the number of its outstanding shares of Stock (other than by way of issuing
Stock in a public or private offering for cash or property) or change in any way
the rights and privileges of such shares by means of a Stock dividend or any
other distribution upon such shares payable in Stock, or through a Stock split,
subdivision, consolidation, combination, reclassification or recapitalization
involving the Stock or a subscription for shares of Stock that has the effect of
diluting the Company's capital (hereinafter a "capital restructuring"), then for
purposes of determining the entitlement to payments under Section 6, (i) the
number of shares authorized for issuance under this Section 4, and (ii) the $100
per share amount, $120 per share amount and $180 per share amount referenced in
Section 1 and contained in the definitions set forth in Section 2 hereof and the
amount of production required to attain the Independent Production Goal shall
be, in each case, equitably and proportionally adjusted to take into account any
capital restructuring. Any adjustment under this Section shall be made by the
Committee, whose determination with regard thereto, including whether any
adjustment is needed, shall be final and binding upon all parties.


                                       7
<PAGE>   11


                                    SECTION 5

                          REORGANIZATION OR LIQUIDATION

In the event that the Company is merged or consolidated with another corporation
and the Company is not the surviving corporation, or if all or substantially all
of the assets or more than 20 percent of the outstanding voting stock of the
Company is acquired by any other corporation, business entity or person, or in
case of a reorganization (other than a reorganization under the United States
Bankruptcy Code) or liquidation of the Company, and if the provisions of Section
7 hereof do not apply, the Committee, or the board of directors of any
corporation assuming the obligations of the Company, shall, as to the Plan and
outstanding Plan Units either (i) make appropriate provision for the adoption
and continuation of the Plan by the acquiring or successor corporation and for
the protection of any holders of such outstanding Plan Units by the substitution
on an equitable basis of appropriate stock of the Company or of the merged,
consolidated or otherwise reorganized corporation which will be issuable with
respect to the Stock, provided that no additional benefits shall be conferred
upon the Participants holding such Plan Units as a result of such substitution,
or (ii) provided that a Price Threshold Date has occurred, upon written notice
to the Participants, the Committee may accelerate the vesting and payment dates
of the entitlement to receive cash and Stock under outstanding Plan Units so
that all such existing entitlements are paid prior to any such event. In the
latter event, such acceleration shall only apply to entitlements to cash and
Stock payable as the result of the occurrence of the most recent Price Threshold
Date and shall not by such acceleration, deem the occurrence of a Price
Threshold Date that has not occurred by the date of the notice.

                                    SECTION 6

                               GRANT OF PLAN UNITS

6.1 Grants. Each Participant may be awarded an initial grant (a "Grant") of Plan
Units under this Plan by the Committee, which Grant shall be composed of one
Initial Plan Unit, Secondary Plan Unit, Final Plan Unit and Independent
Production Goal Unit. The Committee, in its sole discretion, may award
additional Grants to any Participant in connection with such Participant's
receiving a significant increase in salary and/or a promotion within the
Company. Each Grant awarded by the Committee shall be evidenced by a written
agreement entered into by the Company and the Participant to whom the Grant is
awarded (the "Grant Agreement"), which shall contain the terms and conditions
set out in this Section 6, as well as such other terms and conditions as the
Committee may consider appropriate.


                                       8
<PAGE>   12


6.2 Grant Agreements. Each Grant Agreement entered into by the Company and each
Participant shall specify which Category applies for such Participant and
contain at least the following terms and conditions. In the event of any
inconsistency between the provisions of the Plan and any Grant Agreement, the
provisions of the Plan shall govern.

         6.2.1 Grant Terms. Each Grant Agreement shall evidence the Grant of
Plan Units and entitle the Participant to receive the indicated Plan Units which
shall convert into the right to receive a conditional payment of cash and
issuance of Stock upon the occurrence of one or more of the Price Threshold
Dates, all as set forth below.

         (a) If at any time prior to January 1, 2005, the Initial Price
Threshold Date occurs, the Participant may become entitled to receive a portion
or all of the Initial Amount payable to Participants in such Category, as
specified in the applicable Grant Agreement, in accordance with the payment
schedule and as otherwise set out in Section 6.2.2.

         (b) If at any time prior to January 1, 2005, the Secondary Price
Threshold Date occurs, the Participant may become entitled to receive a portion
or all of the Secondary Amount payable to Participants in such Category, as
specified in the applicable Grant Agreement, in accordance with the payment
schedule and as otherwise set out in Section 6.2.2.

         (c) If at any time prior to January 1, 2005, the Final Price Threshold
Date occurs, the Participant may become entitled to receive a portion or all of
the Final Amount payable to Participants in such Category, as specified in the
applicable Grant Agreement, in accordance with the payment schedule and as
otherwise set out in Section 6.2.2.

         (d) If at any time prior to January 1, 2005, the Independent Production
Goal Date occurs, the Participant may become entitled to receive a portion or
all of the Independent Production Goal Amount payable to Participants in the
same Category, as specified in the applicable Grant Agreement, in accordance
with the payment schedule and as otherwise set out in Section 6.2.2.

         6.2.2 Payment of Payout Amounts. Subject to the provisions of Section
6.3, the Payout Amounts shall be payable in increments strictly in accordance
with the following schedule:


                                       9
<PAGE>   13


         (a) The entitlement to receive the first one-third (1/3) of any Payout
Amount shall vest on the applicable Price Threshold Date and shall be paid by
the Company to the Participant within thirty (30) days of the applicable Price
Threshold Date in the manner set out in Section 6.4 below.

         (b) The entitlement to receive the remainder of any Payout Amount shall
vest and become payable in equal parts on the dates occurring, respectively, 12
months and 24 months after the applicable Price Threshold Date, in the same
proportions and amounts as set forth in Section 6.4 below, and shall be paid by
the Company to the Participant within thirty (30) days of such date. If any of
the above dates is not a business day during which the Company is open for
business, such date of vesting or payment shall be the first business date
occurring immediately thereafter.

         (c) No Payout Amount or portion thereof shall be payable under this
Section 6.2.2 if the applicable Price Threshold Date has not occurred prior to
January 1, 2005.

6.3 Termination of Employment, Death, Disability, etc. Except as set forth
below, each Grant Agreement shall state that each Grant, the Plan Units received
thereunder and the right to receive any payment thereunder upon conversion of
the Plan Units shall be subject to the condition that the Participant has
remained a full-time employee of the Company from the initial award of a Grant
until the applicable vesting date as follows:

         (a) If the Participant voluntarily leaves the employment of the
Company, or if the employment of the Participant is terminated by the Company
for cause or otherwise, any Plan Units not previously converted and the right to
receive any Payout Amounts not yet paid in accordance with Section 6.2.2 shall
thereafter be void and forfeited for all purposes.

         (b) If the Participant retires from employment with the Company on or
after attaining age 60, the retired Participant shall be entitled to receive the
payments in Stock and cash in accordance with Section 6.2.2, provided that (i)
such Participant has certified in writing to the Committee his commitment not to
enter into full-time employment or a consulting arrangement with a competitor of
the Company, and (ii) the applicable Price Threshold Date has occurred prior to
the Participant's last day of employment with the Company. Such retired
Participant shall not be entitled to any payment which may arise due to the
occurrence of a Price Threshold Date after the effective date of such
Participant's retirement. A failure of the Participant to comply with the
undertaking of clause (i) above shall void such Participant's right to payments
hereunder.


                                       10
<PAGE>   14


         (c) If the Participant dies, or if the Participant becomes disabled (as
determined pursuant to the Company's Long-Term Disability Plan or any successor
plan), while still employed, payment in Stock and cash in accordance with
Section 6.2.2 shall be made to the disabled Participant or to those entitled
under the Participant's will or by the laws of descent and distribution,
provided that the applicable Price Threshold Date has occurred prior to the
earlier of such Participant's disability or death. There shall be no entitlement
to any payment, which may arise due to the occurrence of a Price Threshold Date
after the earlier of such Participant's disability or death.

6.4 Payment and Tax Withholding. Each Grant Agreement shall provide that, upon
payment of any entitlement upon conversion of any Plan Units, the Participant
shall make appropriate arrangements with the Company to provide for the amount
of minimum tax withholding required by Sections 3102 and 3402 or any successor
section(s) of the Internal Revenue Code and applicable state and local income
and other tax laws, as follows:

         (a) If upon the achievement of a Threshold Date the credit rating of
the Company's long term, unsecured debt is at or above investment grade, then
each payment of the related Payout Amount shall be made in a proportion of cash
and shares of Stock, determined by the Committee, such that the cash portion
shall be sufficient to cover the withholding amount required by this Section.
The cash portion of any payment of a Payout Amount shall be based on the Fair
Market Value of the shares of Stock on the business day immediately preceding
the payment date. Such cash portion shall be withheld by the Company to satisfy
applicable tax withholding requirements.

         (b) If upon the achievement of a Threshold Date the Company's long
term, unsecured debt has a credit rating below investment grade, the Committee,
in its sole discretion, may either (i) provide for the payment of the
withholding amount required by this Section as set forth in Subsection (a) above
or (ii) specify that each payment of the related Payout Amount to a Participant
be made only after the Participant has made funds available to the Company
sufficient to cover the withholding amount required by this Section. The funds
required by this Subsection (b) may be obtained by the Participant by means of a
loan from a securities broker or dealer, in which case the Participant may
satisfy the requirements hereof by delivering to the Company an irrevocable
instruction to such broker or dealer to promptly deliver to the Company, by wire
transfer or certified or cashier's check, the funds necessary to meet the
Participant's obligations hereunder and such delivery instructions for the
shares issuable to the Participant as the broker or dealer may require. The
calculation of the funds to be provided by the Participant under this paragraph
shall be based on the Fair Market Value of the shares of Stock to be issued to
the Participant, on the business day immediately preceding the payment date.


                                       11
<PAGE>   15


         (c) Upon a request made to the Committee by a Participant, the
proportion of cash and Stock as set forth in Subsection (a) above may be, but
need not be, changed by the Committee, in its sole discretion, to provide for,
among other things, special or additional tax burdens on a Participant but, in
no event, shall the cash portion of any payment exceed fifty percent (50%).

6.5 Subsequent Grant Agreements. Following the award of Grants in 2000,
additional Participants may be designated by the Committee for grants of Plan
Units thereafter subject to the same terms and conditions set forth above for
initial grants except that the Committee, in its sole discretion, may reduce the
value of the Initial Amount, Secondary Amount, Final Amount or Independent
Production Goal Amount to which subsequent Participants may become entitled and
the applicable Grant Agreement shall be modified to reflect such reduction.

6.6 Stockholder Privileges. No Participant shall have any rights as a
stockholder with respect to any shares of Stock into which a Plan Unit is
convertible until the Participant becomes the holder of record of such Stock.

6.7 Limitations on Stock Issuable to Officers and Directors. Any provision of
the Plan notwithstanding, the total number of shares of Stock issuable to
Participants who are directors or officers of the Company (as defined for the
purposes of Section 16 of the Securities Exchange Act of 1934, as amended) shall
not exceed 49 percent of the total shares issuable under the Plan (the "D&O
Limitation"). If the total number of shares of Stock issuable to all of the
Company's directors and officers who are Participants in the Plan shall exceed
the D&O Limitation, then the total number of shares of Stock issuable to such
Participants shall be reduced to a number equal to the D&O Limitation and the
number of shares of Stock issuable to each such Participant upon conversion of
any Plan Unit shall be reduced pro rata.

6.8 Deferral of Income. For Participants eligible for participation in the
Deferred Delivery Plan, all or a portion of the income resulting from the
conversion of Plan Units into Payout Amounts is subject to deferral into the
Participant's Deferred Delivery Plan account, if the Participant has made an
irrevocable election to make such a deferral, as follows: (a) with respect to
the first payment to be made upon the occurrence of a Price Threshold Date, no
more than 30 days after the Participant executes the applicable Grant Agreement
and/or (b) with respect to any other payment to be made after the occurrence of
a Price Threshold Date, at least six months prior to the date such payment is to
be made by the Company. If the Participant has complied with the above
requirements, all or a portion of the income resulting from any payment upon the
conversion of Plan Units into Payout Amounts shall be deferred into the
Participant's Deferred Delivery Plan account and no additional cash or shares of
Stock shall be delivered to the Participant.


                                       12
<PAGE>   16


                                    SECTION 7

                                CHANGE IN CONTROL

7.1 In General. In the event of a change in control of the Company as defined in
Section 7.3 hereof, then the Committee may, in its sole discretion, without
obtaining stockholder approval, take any or all of the following actions
assuming the occurrence of a Price Threshold Date: (a) accelerate the vesting
and payment dates of the entitlement to receive cash and Stock upon conversion
of any Plan Units so that all existing entitlements become fully payable, which
acceleration may be conditional upon the occurrence of subsequent events
including, without limitation, a change in control, and may be made irrevocable,
either conditionally or unconditionally; (b) pay cash to all Participants in
exchange for the cancellation of their outstanding Plan Units in an amount equal
to the cash and the Fair Market Value of the Stock to which Participants have a
conditional entitlement under such Plan Units at the date of the cancellation of
the Plan Units; and (c) make any other adjustments or amendments to terms of the
outstanding Plan Units as the Committee deems appropriate.

7.2 Limitation on Payments. If the provisions of this Section 7 would result in
the receipt by any Participant of a payment within the meaning of Section 280G
or any successor section(s) of the Internal Revenue Code, and the regulations
promulgated thereunder, and if the receipt of such payment by any Participant
would, in the opinion of independent tax counsel of recognized standing selected
by the Company, result in the payment by such Participant of any excise tax
provided for in Sections 280G and 4999 or any successor section(s) of the
Internal Revenue Code, then the amount of such payment shall be reduced to the
extent required, in the opinion of independent tax counsel, to prevent the
imposition of such excise tax; provided, however, that the Committee, in its
sole discretion, may authorize the payment of all or any portion of the amount
of such reduction to the Participant.

7.3 Definition. For purposes of the Plan, a "change in control" shall mean any
of the events specified in the Company's Income Continuance Plan or any
successor plan which constitute a change in control within the meaning of such
plan.


                                       13
<PAGE>   17


                                    SECTION 8

                        RIGHTS OF EMPLOYEES, PARTICIPANTS

8.1 Employment. Neither anything contained in the Plan or any Grant Agreement
nor the granting of any Plan Units under the Plan shall confer upon any
Participant any right with respect to the continuation of his or her employment
by the Company or any Affiliated Corporation, or interfere in any way with the
right of the Company or any Affiliated Corporation, at any time to terminate
such employment or to increase or decrease the level of the Participant's
compensation from the level in existence at the time of the award of Plan Units.

8.2 Non-transferability. No right or interest of any Participant in a Plan Unit
granted pursuant to the Plan shall be assignable or transferable during the
lifetime of the Participant, either voluntarily or involuntarily, or subjected
to any lien, directly or indirectly, by operation of law, or otherwise,
including execution, levy, garnishment, attachment, pledge or bankruptcy. In the
event of a Participant's death, a Participant's rights and interests in any Plan
Unit shall, to the extent provided in Section 6.3 hereof, be transferable by
testamentary will or the laws of descent and distribution, and payment of any
entitlements due under the Plan shall be made to the Participant's legal
representatives, heirs or legatees. If in the opinion of the Committee a person
entitled to payments or to exercise rights with respect to the Plan is disabled
from caring for his or her affairs because of mental condition, physical
condition or age, payment due such person may be made to, and such rights shall
be exercised by, such person's guardian, conservator or other legal personal
representative upon furnishing the Committee with evidence satisfactory to the
Committee of such status.

                                    SECTION 9

                             OTHER EMPLOYEE BENEFITS

The amount of any income deemed to be received by a Participant as a result of
the payment upon conversion of a Plan Unit shall not constitute "earnings" or
"compensation" with respect to which any other employee benefits of such
Participant are determined, including without limitation benefits under any
pension, profit sharing, life insurance or salary continuation plan.

                                       14

<PAGE>   18


                                   SECTION 10

                  PLAN AMENDMENT, MODIFICATION AND TERMINATION

The Committee or the Board may at any time terminate, and from time to time may
amend or modify the Plan. No amendment, modification or termination of the Plan
shall in any manner adversely affect any Plan Unit theretofore awarded under the
Plan, without the consent of the Participant holding such Plan Unit.

The Committee shall have the authority to adopt such modifications, procedures
and subplans as may be necessary or desirable to comply with the provisions of
the laws (including, but not limited to, tax laws and regulations) of countries
other than the United States in which the Company may operate, so as to assure
the viability of the benefits of the Plan to Participants employed in such
countries.


                                   SECTION 11

                               REQUIREMENTS OF LAW

11.1 Requirements of Law. The issuance of Stock and the payment of cash pursuant
to the Plan shall be subject to all applicable laws, rules and regulations,
including applicable federal and state securities laws. The Company may require
a Participant, as a condition of receiving payment upon conversion of a Plan
Unit, to give written assurances in substance and form satisfactory to the
Company and its counsel to such effect as the Company deems necessary or
appropriate in order to comply with federal and applicable state securities
laws.

11.2 Section 16 Requirements. If a Participant is an officer or director of the
Company within the meaning of Section 16, Grants awarded hereunder shall be
subject to all conditions required under Rule 16b-3, or any successor rule(s)
promulgated under the Securities Exchange Act of 1934, as amended, to qualify
the Plan Units for any exemption from the provisions of Section 16 available
under such Rule. Such conditions are hereby incorporated herein by reference and
shall be set forth in the agreement with the Participant, which describes the
Grant.

11.3 Governing Law. The Plan and all Grant Agreements hereunder shall be
construed in accordance with and governed by the laws of the State of Texas.

                                       15

<PAGE>   19


                                   SECTION 12

                              DURATION OF THE PLAN

The Plan shall terminate at such time as may be determined by the Committee, and
no Plan Units shall be awarded after such termination. If not sooner terminated
under the preceding sentence, the Plan shall fully cease and expire at midnight
on December 31, 2004. Payout Amounts for which one or more of the Price
Threshold Dates has occurred and which remain outstanding at the time of the
Plan termination shall continue in accordance with the Grant Agreement
pertaining to such Plan Units.



Dated:    December 19, 2000



                                             APACHE CORPORATION

ATTEST:

/s/ Cheri L. Peper                       By: /s/ Jeffrey M. Bender
- ------------------------------------        ----------------------
Cheri L. Peper                              Jeffrey M. Bender
Corporate Secretary                         Vice President





                                       16
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-10.23
<SEQUENCE>5
<FILENAME>h84997ex10-23.txt
<DESCRIPTION>1996 PERFORMANCE STOCK PLAN
<TEXT>

<PAGE>   1