1
                                                                    EXHIBIT 2.3

[THIS AGREEMENT HAS CONFIDENTIAL PORTIONS OMITTED, WHICH PORTIONS HAVE BEEN
FILED SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION. OMITTED PORTIONS
ARE INDICATED IN THIS AGREEMENT WITH "[TEXT OMITTED - CONFIDENTIAL TREATMENT
REQUESTED]."










                           PURCHASE AND SALE AGREEMENT


                                 BY AND BETWEEN


                             MCFARLAND ENERGY, INC.


                                       AND


                           BARGO PETROLEUM CORPORATION



                             DATED FEBRUARY 22, 2000

                         EFFECTIVE DATE: JANUARY 1, 2000









   2
                                TABLE OF CONTENTS


PART ONE

                                                                                                              
   SUBJECT MATTER, DEFINITIONS AND RULES OF CONSTRUCTION..........................................................1
     1.1     Subject Matter                                                                                       1
     1.2     Defined Terms                                                                                        1
        Affiliate.................................................................................................1
        Agreed Rate...............................................................................................1
        Agreement.................................................................................................2
        Applicable Law............................................................................................2
        Assets....................................................................................................2
        Assumed Obligations.......................................................................................2
        Beneficial Interests......................................................................................2
        Burdens...................................................................................................2
        Business Day..............................................................................................2
        Closing...................................................................................................2
        Closing Date..............................................................................................3
        Code......................................................................................................3
        [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
        Contemplated Transactions.................................................................................3
        Contracts.................................................................................................3
        Corporate Documents.......................................................................................3
        Easements.................................................................................................3
        [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
        [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
        [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
        Excluded Assets...........................................................................................4
        Excluded Obligations......................................................................................6
        Fee Interests.............................................................................................6
        [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
        Governmental Body.........................................................................................6
        HSR Act...................................................................................................6
        Hydrocarbons..............................................................................................6
        Knowledge.................................................................................................7
        Leases....................................................................................................7
        Losses....................................................................................................7
        [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
        Other Property............................................................................................7
        Permitted Encumbrances....................................................................................8
        Person....................................................................................................9
        [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
        Properties...............................................................................................10
        Taxes....................................................................................................10
        TEPI.....................................................................................................10
        TEPI PSA.................................................................................................10
        [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
     1.3     Other Definitions in the Agreement                                                                  11
     1.4     Rules of Construction                                                                               12

PART TWO

   SALE AND PURCHASE.............................................................................................13
     2.1     Purchase and Sale                                                                                   13
        [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
- -------------------------------------------------------------------------------------------------------------------


                                       i
   3

        [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
                                                                                                           
     [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
     2.5     Closing and Payment of Purchase Price                                                               14
     2.6     Method of Payment                                                                                   14

PART THREE

   REPRESENTATIONS AND WARRANTIES................................................................................14
     3.1     Seller                                                                                              14
     3.2     Buyer                                                                                               17
     3.3     Disclaimer and Notifications                                                                        18

PART FOUR

   COVENANTS.....................................................................................................21
     4.1     Covenants of Seller                                                                                 21
     4.2     Covenants of Buyer                                                                                  22
     4.3     Covenants of Seller and Buyer                                                                       24

PART FIVE

   CONDITIONS TO CLOSING.........................................................................................33
     5.1     Seller's Closing Conditions                                                                         33
     5.2     Buyer's Closing Conditions                                                                          35
        [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]


PART SIX

        [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
        [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]

PART SEVEN

   TAXES.........................................................................................................38
     7.1     Payment and Apportionment of Real Property Taxes and Personal Property Taxes                        38
     7.2     Other Taxes                                                                                         38
     7.3     Sales Taxes                                                                                         38
     7.4     Cooperation                                                                                         39
     7.5     Tax Proceedings                                                                                     39
     7.6     Purchase Price Allocation                                                                           39
     7.7     Reservation of Section 29 Credits                                                                   39
     7.8     Reservation of Section 43 Credits                                                                   39

PART EIGHT

        [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
        [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
        [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
        [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
        [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
        [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
        [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]

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

                                       ii
   4

PART NINE

                                                                                                            
   MISCELLANEOUS.................................................................................................43
     9.1     Successors and Assigns                                                                              43
     9.2     Waivers and Amendments                                                                              43
     9.3     Notices                                                                                             44
     9.4     Counterparts                                                                                        44
     9.5     Entire Agreement                                                                                    44
     9.6     Seller's Option to Elect a Tax Deferred Exchange                                                    45
     9.7     Severability                                                                                        45
     9.8     Applicable Law                                                                                      45
     9.9     Expenses                                                                                            45
     9.10    Laws and Regulations                                                                                45
     9.11    Public Announcements                                                                                45
     9.12    Assignability                                                                                       45
     9.13    Provisions Survive Closing                                                                          46
     9.14    Dispute Resolution                                                                                  46
        [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]


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                                      iii

   5


     SCHEDULES AND EXHIBITS

SCHEDULES
- ---------

      A           Contracts
      B           Easements
      C           Included Equipment
      D           Excluded Assets
      E           Leases
      F           Fee Interests
      G           Properties and Imbalances
      2.4         Purchase Price Allocation
      3.1(g)      Litigation
      3.1(h)      Consents and Preferential Rights
      3.1(j)      Permits
      3.1(k)      Notices on Leases and Contract
   [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
      3.1(n)      AFE's
      4.3(v)      Joint Use Agreements
      9.14        Dispute Resolution

EXHIBITS
- --------

      A                      Assignments
      B-1 through B-2        Deeds
      C                      Oil and Gas Leases
      D                      Officer's Certificate -  Buyer
      E                      Officer's Certificate  - Seller
      F                      [intentionally left blank]
      G                      [intentionally left blank]
      H                      [intentionally left blank]
      I                      [intentionally left blank]
      J                      [intentionally left blank]
      K                      [intentionally left blank]
      L                      Geophysical License Agreement (2D)



- --------------------------------------------------------------------------------
                                       iv
   6

                           PURCHASE AND SALE AGREEMENT


         This agreement is made and entered into this 22nd day of February,
2000, by and between McFarland Energy, Inc., a Delaware corporation (hereinafter
"Seller"), and Bargo Petroleum Corporation, a Texas corporation, (hereinafter
"Buyer"). Seller and Buyer are sometimes separately referred to herein as a
"Party" and collectively as "Parties."


                                    PART ONE

              SUBJECT MATTER, DEFINITIONS AND RULES OF CONSTRUCTION

         1.1 SUBJECT MATTER. The subject matter of this Agreement is the sale by
Seller to Buyer of the Assets, the purchase of the Assets and the assumption of
the Assumed Obligations by Buyer, and the terms and conditions upon which all of
the foregoing shall take place.

         1.2 DEFINED TERMS. For purposes of this Agreement, including the
Exhibits and Schedules hereto, except as otherwise expressly provided or unless
the context otherwise requires, the terms defined in this Section 1.2 have the
meanings assigned to them herein and the capitalized terms defined elsewhere in
the Agreement by inclusion in quotation marks and parentheses have the meanings
so ascribed to them.

                  "AFFILIATE" means, with respect to any Person, any other
         Person directly or indirectly controlling or controlled by, or under
         common control with, such Person. For purposes of this definition, the
         term "control" (including, with correlative meanings, the terms
         "controlling," "controlled by" and "under common control with") as
         applied to any Person, means the possession, directly or indirectly, of
         the power to direct or cause the direction of the management of such
         Person, whether through ownership of voting securities, by contract or
         otherwise, and specifically with respect to a corporation or
         partnership, means direct or indirect ownership of fifty percent (50%)
         or more of the voting stock in such corporation or of the voting
         interest as a partner in such partnership. In addition, Seller's
         Affiliates shall include Equilon Enterprises LLC, Motiva Enterprises
         LLC, Equiva Services LLC and Equiva Trading Company LLC.

                  "AGREED RATE" means a rate per annum calculated on a 360-day
         basis which is equal to the lesser of (a) a rate which is one percent
         (1%) above the prime rate of interest of Chase Manhattan Bank, New
         York, New York, as announced or published by such bank from time to
         time (adjusted from time to time to reflect any changes in such rate
         determined hereunder), or (b) the maximum rate from time to time
         permitted by Applicable Law.
- --------------------------------------------------------------------------------
                                       1
   7

                  "AGREEMENT" means this Purchase and Sale Agreement, including
         the Exhibits and Schedules.

                  "APPLICABLE LAW" means all laws, statutes, treaties, rules,
         codes, ordinances, regulations, certificates, orders, interpretations,
         licenses and permits of any Governmental Body, including the common or
         civil law, (including, without limitation, those pertaining to
         occupational health and safety, consumer product safety, employee
         benefits, the environment, securities or zoning) and all judgments,
         decrees, injunctions, writs, orders or like action of any court,
         arbitrator or other Governmental Body of competent jurisdiction.

                  "ASSETS" means collectively the Contracts, the Easements, the
         Leases, the Fee Interests, the Beneficial Interests and the Other
         Property, except to the extent constituting Excluded Assets.

                  "ASSUMED OBLIGATIONS" means, except as constitutes Excluded
         Obligations (i) all liabilities, duties, and obligations that arise
         from the ownership or operation of the Assets after the Effective Date;
         (ii) all liabilities and obligations with respect to Plugging and
         Abandonment; (iii) all duties, liabilities and obligations under the
         Contracts, the Leases and the Easements arising after and in existence
         as of the Effective Date; (iv) the Environmental Obligations and (v)
         all other duties, liabilities, and obligations assumed by Buyer under
         this Agreement.

                  "BENEFICIAL INTERESTS" means any and all rights, titles and
         interests owned by Seller in, under or derived from all of the
         presently existing pooling, unitization and communitization agreements
         or other operating agreements and the units created thereby (including
         without limitation, all units formed under orders, regulations, rules
         or other official acts of any Governmental Body having jurisdiction)
         not evidenced by Seller's ownership of lease or fee interests,
         including all of Seller's rights, titles and interests to such
         Contracts as set forth on Schedule A.

                  "BURDENS" means royalties (including both lessors' royalties
         and nonparticipating royalty interests), overriding royalties, net
         profits interests, production payments, and other similar obligations
         and burdens payable out of production.

                  "BUSINESS DAY" means a day on which commercial banks are
         generally open for regular business in Houston, Texas.

                  "CLOSING" means the closing of the Contemplated Transactions
         at 10:00 a.m. local time at Seller's offices at 1111 Bagby, Houston,
         Texas, on the Closing Date or at such other time or place as the
         Parties may mutually agree upon in writing.

                  "CLOSING DATE" means March 30, 2000 or such other date as the
         Parties may agree in writing.
- --------------------------------------------------------------------------------
                                       2
   8

                  "CODE" means the Internal Revenue Code of 1986, as amended, or
         any successor law, and regulations or rules issued under any of the
         foregoing.

                  [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]

                  "CONTEMPLATED TRANSACTIONS" means each and all of the
         transactions contemplated by the Agreement.

                  "CONTRACTS" means, to the extent they are assignable, all of
         Seller's right, title and interest in and to all valid and existing,
         farmout agreements, unitization agreements, pooling agreements, unit
         declarations, gas sales or purchase contracts, operating agreements and
         other contracts attributable to the Assets, or other agreements and
         instruments (including all amendments thereto and any agreements
         settling claims asserted thereunder) to the extent and only to the
         extent that the same relate, pertain or are incidental to the
         Easements, the Leases, the Fee Interests, the Beneficial Interests or
         the Other Property, including, without limitation, those listed on
         Schedule A, but specifically excluding the Easements and Leases.

                  "CORPORATE DOCUMENTS" means with respect to a Delaware
         corporation the Certificate of Incorporation and By-Laws or the
         equivalent documents of a corporation organized under the laws of
         another jurisdiction.

                  "EASEMENTS" means Seller's non-exclusive or exclusive, as the
         case may be, rights to the use and occupancy of the surface, including,
         without limitation, tenements, authorizations, variances,
         appurtenances, surface leases, easements, permits, licenses,
         servitudes, rights-of-way and similar rights and interests in any way
         appertaining, belonging, affixed or incidental to or used in connection
         with the ownership or operation of the Leases, Fee Interests,
         Beneficial Interests or Other Property, including, without limitation,
         those listed on Schedule B hereto, except to the extent constituting
         Excluded Assets.

                  [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]


                  [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]


                  [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]




         [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]

- --------------------------------------------------------------------------------
                                       3
   9

                  "EXCLUDED ASSETS" means the following:

                           (a) all (i) trade credits, accounts receivable (other
                  than those specifically included in the definition of Other
                  Property), notes receivable and other receivables attributable
                  to Seller's interest in the Assets with respect to any period
                  of time prior to the Effective Date, (ii) deposits, cash,
                  checks in process of collection, cash equivalents and funds
                  attributable to Seller's interest in the Assets with respect
                  to any period of time prior to the Effective Date, and (iii)
                  funds attributable to third Persons for production prior to
                  the Effective Date but suspended or impounded by Seller;

                           (b) all corporate, financial, and tax records of
                  Seller;

                           (c) all claims and causes of action of Seller (i)
                  arising from acts, omissions or events, or damage to or
                  destruction of property occurring prior to the Effective Date,
                  and (ii) affecting any of the excluded assets set forth in (a)
                  through (s) of this definition;

                           (d) all rights, titles, claims and interests of
                  Seller accruing prior to the Effective Date (i) under any
                  policy or agreement of insurance or indemnity, (ii) under any
                  bond, or (iii) to any insurance or condemnation proceeds or
                  awards;

                           (e) all Hydrocarbons produced from or attributable to
                  the Assets with respect to all periods prior to the Effective
                  Date including all merchantable liquids in stock or sales
                  tanks or associated flowlines, together with all proceeds from
                  or of such Hydrocarbons;

                           (f) claims of Seller for refund of, or loss carry
                  forwards with respect to income or franchise taxes or any
                  other Taxes attributable to: (i) any period prior to the
                  Effective Date, or (ii) any of the excluded assets set forth
                  in (a) through (s) of this definition;

                           (g) all amounts due or payable to Seller as
                  adjustments or refunds under any contracts or agreements
                  affecting the Assets, with respect to periods prior to the
                  Effective Date, specifically including, without limitation,
                  amounts recoverable from audits under operating agreements;




- --------------------------------------------------------------------------------
                                       4
   10

                           (h) all amounts due or payable to Seller as
                  adjustments to insurance premiums related to the Assets with
                  respect to any period prior to the Effective Date;

                           (i) all proceeds, benefits, income or revenues
                  accruing (and any security or other deposits made) with
                  respect to (i) the Assets prior to the Effective Date; and
                  (ii) any of the excluded assets set forth in (a) through (s)
                  of this definition;

                           (j) all legal files; attorney-client communications
                  or attorney work product; records and documents subject to
                  confidentiality provisions, claims of privilege or other
                  restrictions (including, without limitation, contractual
                  obligations to third Persons) on access; and auditor's
                  reports;

                           (k) reserve information and reports; seismic,
                  geochemical, and geophysical information and data, or other
                  proprietary information relating thereto, whether owned or
                  licensed by Seller, and any interpretive data except for
                  certain 2D seismic data licensed to Buyer pursuant to the
                  Geophysical License Agreement attached hereto as Exhibit L;

                           (l) all other bids received by Seller for the Assets
                  or any portion thereof;

                           (m) all of Seller's or Seller's Affiliates'
                  intellectual property, including but not limited to
                  proprietary computer software, patents, trade secrets,
                  copyrights, names, marks, and logos;

                           (n) all of Seller's vehicles, trucks (including
                  associated tools), boats, house trailers, tools, pulling
                  machines, warehouse stocks, microwave equipment, office
                  computer equipment, remote terminal units, equipment or
                  material temporarily located on the Assets, except those
                  listed on Schedule C;

                           (o) any pipelines, easements, fixtures, tanks, LACT
                  units or equipment located on the Assets which belong to third
                  Persons, including lessors and Affiliates of Seller;

                           (p) all of Seller's interest in the equipment,
                  facilities and other assets as more fully described on
                  Schedule D hereto;

                           (q) all of Seller's interest in any oil, gas or
                  mineral leases, mineral or surface fee or lands which (i) are
                  not set forth on Schedule E and Schedule F or (ii) cover or
                  pertain to lands or depths other than the particular lands or
                  depths described in the Leases and Fee Interests specifically
                  referenced on Schedule E and Schedule F or such depths which
                  are specifically excepted or reserved on Schedule E and
                  Schedule F;




- --------------------------------------------------------------------------------
                                       5
   11

                           (r) all of Seller's interest in any Assets which are
                  not conveyed to Buyer pursuant to the terms of this Agreement
                  due to a Title Defect, Material Environmental Condition or
                  other condition; and

                           (s) all real or personal property held or owned by
                  Seller's Affiliates or any third Persons.


                  "EXCLUDED OBLIGATIONS" means, with respect to any Asset,
         except as constitutes Environmental Obligations, any liabilities and
         obligations of Seller (i) due, accrued or owed prior to the Effective
         Date; (ii) due, accrued or owed prior to the Effective Date with
         respect to the payment of Burdens and Taxes; (iii) to third Persons
         arising from property damage or personal injury sustained prior to the
         Effective Date; (iv) arising from any existing litigation or demands
         made as of the Effective Date; (v) arising from or attributable to any
         Excluded Asset, and (vi) to be retained by Seller as expressly provided
         in this Agreement.

                  "FEE INTERESTS" means all rights, titles and interests of
         Seller owned as of the Effective Date and the Closing Date, or acquired
         pursuant to Seller's rights as of the Effective Date and Closing Date
         under the terms of an existing Contract, in all the fee and mineral fee
         interests described on Schedule F, insofar and only insofar as such Fee
         Interests cover the lands and depths set forth in Schedule F. The Fee
         Interests shall include all of Seller's right, title and interest to
         all depths unless specifically limited on Schedule F.

                  [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]






                  "GOVERNMENTAL BODY" means any Federal, state, tribal, county,
         parish, municipal, or other federal, state or local governmental
         authority or judicial or regulatory agency, board, body, department,
         bureau, commission, instrumentality, court, tribunal or
         quasi-governmental authority in any jurisdiction (domestic or foreign).

                  "HSR ACT" means the Hart-Scott-Rodino Antitrust Improvement
         Act of 1976, and all regulations thereunder.

                  "HYDROCARBONS" means crude oil, natural gas, casinghead gas,
         condensate, sulphur, natural gas liquids, plant products and other
         liquid or gaseous hydrocarbons (including without limitation, coalbed
         gas and CO2) and shall also refer to all other minerals of every kind
         and character which may be covered by or included in the Assets.




- --------------------------------------------------------------------------------
                                       6
   12

                  "KNOWLEDGE" means the actual knowledge of a Party's current
         corporate officers and business unit managers.

                  "LEASES" means, except to the extent constituting Excluded
         Assets, any and all rights, titles and interests of Seller owned as of
         the Effective Date and the Closing Date, or acquired pursuant to
         Seller's rights as of the Effective Date and the Closing Date under the
         terms of an existing Contract, in all of the oil, gas or mineral
         leases, fees, and other interests described on Schedule E to the
         Agreement, insofar and only insofar as such Leases pertain to the lands
         and interests described in said Schedule. The Leases shall include all
         of Seller's right, title and interest to all depths unless specifically
         limited on Schedule E.

                  "LOSSES" means any and all losses, liabilities, claims,
         demands, penalties, fines, settlements, damages, actions, or suits of
         whatsoever kind and nature (but expressly excluding consequential
         damages), whether or not subject to litigation, including, without
         limitation (i) claims or penalties arising from products liability,
         negligence, statutory liability or violation of any Applicable Law or
         in tort (strict, absolute or otherwise) and (ii) loss of or damage to
         any property, and all reasonable out-of-pocket costs, disbursements and
         expenses (including, without limitation, legal, accounting, consulting
         and investigation expenses and litigation costs).

                  [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]


















                  "OTHER PROPERTY" means, except to the extent constituting
         Excluded Assets,

                           (a) all of Seller's interest in all wells (including,
                  without limitation, all oil, gas, injection, disposal and
                  other wells, whether active or inactive, productive or
                  non-productive, plugged and abandoned or temporarily
                  abandoned), platforms,
- --------------------------------------------------------------------------------
                                       7
   13



                  equipment, facilities and personal property of any kind
                  including but not limited to tubing, casing, wellheads,
                  pumping units, production units, compressors, valves, meters,
                  flowlines, pipelines, gathering systems, tanks, heaters,
                  separators, dehydrators, pumps and injection units which are
                  located on or connected with the Leases, Fee Interests, the
                  Beneficial Interests or Easements and which are used solely
                  and exclusively in connection with the production, treatment,
                  gathering or transportation of Hydrocarbons from the Leases,
                  Properties or Easements;

                           (b) [intentionally left blank]

                           [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]








                           [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]





                           (e) subject to Section 4.3(b), all rights,
                  obligations, interests and benefits to gas imbalances with
                  respect to the Assets; and

                           (f) all licenses, authorizations, permits, variances
                  and similar rights and interests related to the Leases, Fee
                  Interests, Beneficial Interests, Easements and Contracts and
                  personal property to be conveyed hereunder.

                  "PERMITTED ENCUMBRANCES" means:

                           (a) all Leases, operating agreements, operator liens
                  and working interest owner liens for obligations incurred
                  after the Effective Date, unit, communitization and pooling
                  agreements, farmout agreements, subleases and farmin
                  agreements and other Contracts described on Schedule A insofar
                  as same do not operate to increase the working interest of the
                  Seller set forth on Schedule G without a corresponding
                  increase in the net revenue interest and that do not operate
                  to decrease the Seller's net revenue interest set forth on
                  Schedule G;



- --------------------------------------------------------------------------------
                                       8
   14

                           (b) all Applicable Laws, and all rights reserved or
                  vested in any Governmental Body to control or regulate the
                  Assets in any manner including, without limitation, any
                  adjustment to Seller's net revenue interest or gross working
                  interest in a particular Property, caused by, or as the result
                  of, any action of a Governmental Body which is not the result
                  of any claims for under-payment of royalties owed to such
                  Governmental Body nor the negligent act or omission of Seller;

                           (c) liens for Taxes or assessments arising after the
                  Effective Date not yet due and payable or not yet delinquent,
                  or if delinquent, that are being contested in good faith by
                  appropriate action brought in the normal course of business
                  and to the extent covered by Seller's indemnity under Sections
                  8.1 and 8.5 hereof;

                           (d) reversionary interests arising under farmout and
                  farmin agreements, subleases, and the non-consent provisions
                  of applicable operating agreements insofar as same do not
                  operate to increase the working interest of the Seller set
                  forth on Schedule G without a corresponding increase in the
                  net revenue interest and that do not operate to decrease the
                  Seller's net revenue interest set forth on Schedule G;

                           (e) liens imposed by Applicable Law, such as
                  carriers', warehousemen's and mechanics' liens and other
                  similar liens arising in the ordinary course of business which
                  secure payment of obligations arising after the Effective Date
                  or that are not more than sixty (60) days past due or which
                  are being contested in good faith to the extent covered by
                  Seller's indemnity under Sections 8.1 and 8.5 hereof;

                           (f) defects that have been cured by possession under
                  applicable statutes of limitation, and

                           (g) other minor defects or irregularities generally
                  waived by prudent purchasers of oil and gas properties which
                  (i) do not materially interfere with the operation, value or
                  use of any of the Assets, (ii) do not prevent Buyer from
                  receiving the proceeds of production from any of the Assets,
                  (iii) do not operate to increase the working interest of the
                  Seller set forth on Schedule G without a corresponding
                  increase in the net revenue interest and (iv) do not operate
                  to decrease the Seller's net revenue interest set forth on
                  Schedule G.

                  "PERSON" means any natural person, corporation, division of a
         corporation, association, company, estate, trust, partnership, joint
         venture, unincorporated organization, Governmental Body, or any other
         entity.

                  [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]


- --------------------------------------------------------------------------------
                                       9
   15

[TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]




                  "PROPERTIES" means an accounting unit described on Schedule G
         which is utilized by Seller for an allocation of revenue and expenses
         from the Assets.

                  "PROPERTY PACKAGES" means the East Texas Properties, the
         Mid-Continent Properties and the Permian Basin Properties as identified
         in Schedule 2.4.

                  "TAXES" shall mean any and all fees (including, without
         limitation, documentation, license, recording, filing and registration
         fees), taxes (including without limitation, production, gross receipts,
         ad valorem, value added, windfall profit tax, environmental tax,
         turnover, sales, use, personal property (tangible and intangible),
         stamp, leasing, lease, user, leasing use, excise, franchise, transfer,
         heating value, fuel, excess profits, occupational, interest
         equalization, lifting, oil, gas, or mineral production or severance,
         and other taxes), levies, imposts, duties, charges or withholdings of
         any nature whatsoever, imposed by any Governmental Body or taxing
         authority thereof, domestic or foreign, together with any and all
         penalties, fines, additions to tax and interest thereon, whether or not
         such tax shall be existing or hereafter adopted.

                  "TEPI" shall mean Texaco Exploration and Production Inc.

                  "TEPI PSA" shall mean that certain Purchase and Sale Agreement
         of even date herewith by and between Buyer and TEPI.

                  [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]


                           [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]


                           [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]


                           [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]



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                                       10
   16

                           [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]

















                           [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]


         [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]

                   "TRANSITION AGREEMENT" means the transition agreement between
TEPI and Buyer.

         1.3 OTHER DEFINITIONS IN THE AGREEMENT.The following terms shall have
the respective meanings ascribed to them in the Sections of the Agreement set
forth below opposite such terms:

               AFEs.................................................3.1(n)
               Allocated Value......................................2.4
               Assignments..........................................2.5
               Buyer................................................Preamble
               [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
               [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
               Deeds................................................2.5
               [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
               [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
               Employees............................................4.3(s)
               [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
               [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
               [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]

               [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
- --------------------------------------------------------------------------------
                                       11
   17

               [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
               [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
               [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
               [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
               Millennium Compliant ................................3.3(d)
               Oil and Gas Leases...................................2.5
               Party................................................Preamble
               Performance Deposit..................................2.3
               Permits..............................................3.1(j)
               Purchase Price.......................................2.2
               Real and Personal Property Taxes.....................7.1(a)
               Records..............................................1.2
               Rejection Notice.....................................4.3(m)(iii)
               [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
               Reserve Report.......................................3.1(o)
               Seller...............................................Preamble
               [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
               [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]

         1.4      RULES OF CONSTRUCTION.  For purposes of this Agreement:

                  (a) GENERAL. Unless the context otherwise requires, (i) "or"
         is not exclusive; (ii) an accounting term not otherwise defined has the
         meaning assigned to it in accordance with accounting principles that
         are generally accepted in the United States of America; (iii) words in
         the singular include the plural and words in the plural include the
         singular; (iv) words in the masculine include the feminine and words in
         the feminine include the masculine; (v) any date specified for any
         action that is not a Business Day shall be deemed to mean the first
         Business Day after such date; (vi) a reference to a Person includes its
         successors and assigns; and (vii) the use of the word "include" or
         "including" when following any general statement, term or matter, shall
         not be construed to limit such statement, term or matter to the
         specific items or matters set forth immediately following such word or
         to similar items or matters, whether or not non-limiting language (such
         as "without limitation" or "but not limited to" or words of similar
         import) is used with reference thereto, but rather shall be deemed to
         refer to all other items or matters that could reasonably fall within
         the broadest possible scope of such general statement, term or matter.

                  (b) PARTS AND SECTIONS. References to Parts and Sections are,
         unless otherwise specified, to Parts and Sections of the Agreement.
         Neither the captions to Parts or Sections hereof nor the Table of
         Contents shall be deemed to be a part of the Agreement.

                  (c) EXHIBITS AND SCHEDULES. The Exhibits and Schedules form
         part of this Agreement and shall have the same force and effect as if
         set out in the body of this Agreement.

                  (d) OTHER AGREEMENTS. References herein to any agreement or
         other instrument shall, unless the context otherwise requires (or the
         definition thereof otherwise
- --------------------------------------------------------------------------------
                                       12
   18




         specifies), be deemed references to that agreement or instrument as it
         may from time to time be changed, amended or extended.

                                    PART TWO

                                SALE AND PURCHASE

         2.1 PURCHASE AND SALE. At the Closing, Seller shall sell, assign and
convey to the Buyer and Buyer shall purchase and pay for the Assets and assume
the Assumed Obligations as provided in 4.2(a) and the Material Environmental
Conditions as set forth in Section 4.2(b).

         [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]





         [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]



                  EXCEPT AS PROVIDED UNDER SECTION 9.15, IF BUYER FAILS TO
                  COMPLETE THE TRANSACTION SET FORTH IN THIS AGREEMENT, THE
                  PARTIES AGREE THAT SELLER SHALL RETAIN, AS SELLER'S SOLE
                  REMEDY, THE PERFORMANCE DEPOSIT AS LIQUIDATED DAMAGES, WHICH
                  THE PARTIES AGREE IS A REASONABLE SUM CONSIDERING ALL THE
                  CIRCUMSTANCES EXISTING ON THE DATE OF THIS AGREEMENT,
                  INCLUDING THE RELATIONSHIP OF THE SUM OF THE RANGE OF HARM TO
                  SELLER THAT REASONABLY COULD BE ANTICIPATED AND THE
                  ANTICIPATION THAT PROOF OF ACTUAL DAMAGES WOULD BE COSTLY OR
                  INCONVENIENT. IN PLACING THEIR INITIALS BELOW, EACH PARTY
                  SPECIFICALLY CONFIRMS THE ACCURACY OF THE STATEMENTS MADE
                  ABOVE AND THE FACT THAT EACH PARTY WAS REPRESENTED BY COUNSEL
                  WHO EXPLAINED THE CONSEQUENCES OF THIS LIQUIDATED DAMAGES
                  PROVISION AT THE TIME THIS AGREEMENT WAS MADE.
                           Seller                          Buyer
                           Initial___________              Initial_____________




- --------------------------------------------------------------------------------
                                       13
   19

               [TEXT OMITTED -- CONFIDENTIAL TREATMENT REQUESTED]

         2.5 CLOSING AND PAYMENT OF PURCHASE PRICE. Subject to the terms and
conditions contained herein, this sale and purchase shall close on the Closing
Date. At Closing, Buyer will pay Seller the remaining unpaid portion of the
Purchase Price, adjusted pursuant to the terms of this Agreement, by wire
transfer of collected funds payable to Seller as set forth below. At Closing,
Seller shall deliver to Buyer assignments and bills of sale in the form attached
hereto as Exhibit A (the "Assignments"), deeds in the forms attached hereto as
Exhibits B-1 and B-2 (the "Deeds"), oil and gas leases in the form attached
hereto as Exhibit C (the "Oil and Gas Leases") as well as such certificates or
other documents as are required to effect the transfer of the Assets, or the
subsequent operation thereof.

         2.6 METHOD OF PAYMENT. Any amount payable under this Agreement shall be
payable in immediately available funds by means of a wire transfer, if to
Seller, to the care of Texaco Exploration and Production Inc. at TEPI's account
at Chase Manhattan Bank, 1 Chase Plaza, New York, New York, ABA #021000021,
account number 9102582567 (with immediate telephone notice to Luci Romano, (914)
253-6071), or to such other account number as Seller may by written notice
direct, or if to Buyer, to Buyer's account as may be designated by Buyer.


                                   PART THREE

                         REPRESENTATIONS AND WARRANTIES

         3.1 SELLER. Seller represents and warrants to Buyer that, as of the
Effective Date:

                  (a) ORGANIZATION AND STANDING. Seller has been duly organized
         and is validly existing in good standing under the laws of the State of
         Delaware, and is duly qualified to do business and is in good standing
         as a foreign corporation in all jurisdictions where the nature of its
         properties or business requires it.

                  (b) AUTHORITY AND NO VIOLATION. The Seller has the corporate
         power and authority to execute, deliver and perform its obligations
         under this Agreement. The execution, delivery and performance of this
         Agreement (a) has been duly authorized by all requisite corporate or
         shareholder action and (b) does not conflict with or result in a
         violation or breach of the Corporate Documents of the Seller or of any
         agreement,
- --------------------------------------------------------------------------------
                                       14
   20



         instrument, statute, regulation, rule, order, writ, judgment or decree
         to which the Seller or its property is directly or indirectly a party
         or is directly or indirectly subject.

                  (c) VALIDITY OF AGREEMENT. This Agreement is a legal, valid
         and binding obligation of Seller, enforceable against Seller in
         accordance with the terms of the Agreement, except as enforcement may
         be limited by bankruptcy, insolvency, reorganization or other similar
         Applicable Laws affecting the enforcement of creditor's rights
         generally. The enforceability of Seller's obligations under the
         Agreement is subject to general principles of equity (regardless of
         whether such enforceability is considered in a proceeding in equity or
         at law).

                  (d) NO BANKRUPTCY. There are no bankruptcy, reorganization or
         receivership proceedings pending, being contemplated by, or to the
         actual Knowledge of Seller, threatened against Seller.

                  (e) BROKERS' FEES. Seller has not incurred any liability,
         contingent or otherwise, for brokers' or finders' fees relating to the
         Contemplated Transactions for which Buyer shall be liable.

                  (f) STATUS. Seller is not a non-resident alien, foreign
         corporation, foreign partnership, foreign trust or foreign estate (as
         those terms are defined in the Code and in the regulations promulgated
         pursuant thereto.

                  (g) LITIGATION. Except as set forth on Schedule 3.1(g), with
         respect to those Assets operated by Seller, there are no actions,
         suits, or proceedings pending [TEXT OMITTED - CONFIDENTIAL TREATMENT
         REQUESTED]









                  (h) NO CONSENTS REQUIRED. Except as set forth in Section
         4.3(n) and on Schedule 3.1(h) or consents required from Governmental
         Bodies as part of an ordinary course transfer, no preferential purchase
         rights, consents, approvals or other action by, or filing with any
         Person or Governmental Body is required in connection with the
         execution, delivery and performance by Seller of the Agreement.

                  (i) [this section intentionally left blank].



- --------------------------------------------------------------------------------
                                       15
   21

                  (j) PERMITS. Except as set forth on Schedule 3.1(j), as to
         those Assets operated by Seller, Seller has obtained all material
         permits, licenses, and certificates required by Applicable Law in
         connection with the ownership and operation of Assets (the "Permits")
         and such Permits are in full force and effect. Except as set forth on
         Schedule 3.1(j), to Seller's Knowledge as to those Assets not operated
         by Seller, all Permits in connection with the ownership and operation
         of such Assets have been obtained and are in full force and effect.
         Except as set forth on Schedule 3.1(j), to Seller's Knowledge there are
         no outstanding violations with respect to such Permits and no judicial,
         administrative or arbitral proceeding is pending or threatened with
         respect to such Permits

                  (k) LEASES. To Seller's Knowledge, (i) all material Leases,
         unit agreements, pooling agreements, communization agreements and other
         Contracts creating interests comprising the Properties are in full
         force and effect, (ii) except as set forth on Schedule 3.1(k) or
         3.1(g), since January 1, 1998, Seller has not received any written
         notice from any third Person which is still pending claiming any
         material violation or repudiation of the material Leases, unit
         agreements, pooling agreements, communization agreements and other
         Contracts creating interests comprising the Properties, and (iii)
         Seller is entitled to be paid, and is being paid, its interests in the
         Properties without indemnity or guarantee other than those customarily
         found in division orders and other similar agreements and documents.

                  (l) IMBALANCES. To Seller's Knowledge and except for Lease
         obligations for the delivery of gas for residential use, the only
         Contracts pursuant to which Hydrocarbons produced from the Assets are
         being sold are described on Schedule A and there are no (i) gas
         imbalances except as set forth on Schedule G (which may be supplemented
         from time to time before the Closing) and as of the date shown on
         Schedule G which date shall not be more than 120 days prior to Closing,
         or (ii) take-or-pay or other prepayments, failure of purchasers to pay
         on a current basis or refund obligations for which Buyer would be
         liable that would have a material, adverse affect on Buyer's right to
         market production.

                  [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]





                  (n) CURRENT COMMITMENTS. With respect to the Assets operated
         by Seller, Schedule 3.1(n) contains a complete and accurate list as of
         the date of this Agreement of (i) all authorities for expenditures
         ("AFEs") in excess of $50,000 to drill or rework wells or for capital
         expenditures pursuant to any of the Contracts that have been proposed
         by Seller or any third Person on or after the Effective Date, whether
         or not accepted by Seller or any other third Person, and (ii) all AFEs
         and commitments, other than those which have been terminated or
         expired, in excess of $50,000 to drill or rework wells or for other
         capital


- --------------------------------------------------------------------------------
                                       16
   22

         expenditures pursuant to any of the Contacts for which all of the
         activities anticipated in such AFEs or commitments have not been
         completed by the date of this Agreement.


                   [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]


                  (p) CONTRACTS. As to those Assets operated by Seller, there
         are no Contracts, other than those Contracts set forth on Schedule A
         that as of the Closing Date inhibit or preclude Buyer from realizing
         the material benefits of the Assets or under which Seller or any other
         party thereto is in default. To Seller's Knowledge, other than those
         Contracts set forth on Schedule A as to those Assets which are not
         operated by Seller, there are no material Contracts under which Seller
         or any other party thereto is in default.

                  (q) TAXES. All ad valorem, property, production, severance and
         other taxes based on or measured by the ownership of the Properties or
         the production of Hydrocarbons from the Properties have been properly
         and timely paid except those disputed in ordinary course of business if
         any, for which Seller has indemnified Buyer under Section 8.1 and 8.5
         below.

                  (r) LIMITATION. The foregoing representations and warranties
         are given by Seller to Buyer and are not intended to be given or used
         by any other Person not a Party to this Agreement.

         3.2 BUYER. Buyer represents and warrants to Seller that, as of the
Effective Date:

                  (a) ORGANIZATION AND STANDING. Buyer has been duly organized
         and is validly existing in good standing under the laws of the State of
         Texas, and is duly qualified to do business and is in good standing as
         a foreign corporation in all jurisdictions where the nature of its
         properties or business requires it.

                  (b) AUTHORITY AND NO VIOLATION. The Buyer has the corporate
         power and authority to execute, deliver and perform its obligations
         under this Agreement. The execution, delivery and performance of this
         Agreement (i) has been duly authorized by all requisite corporate or
         shareholder action and (ii) does not conflict with or result in a
         violation or breach of the Corporate Documents of the Buyer or of any
         agreement, instrument, statute, regulation, rule, order, writ, judgment
         or decree to which the Buyer or its property is directly or indirectly
         a party or is directly or indirectly subject.

                  (c) VALIDITY OF AGREEMENT. This Agreement is a legal, valid
         and binding obligation of Buyer, enforceable against Buyer in
         accordance with the terms of the Agreement, except as enforcement may
         be limited by bankruptcy, insolvency,


- --------------------------------------------------------------------------------
                                       17
   23

         reorganization or other similar Applicable Laws affecting the
         enforcement of creditor's rights generally. The enforceability of
         Buyer's obligations under the Agreement is subject to general
         principles of equity (regardless of whether such enforceability is
         considered in a proceeding in equity or at law).

                  (d) NO BANKRUPTCY. There are no bankruptcy, reorganization or
         receivership proceedings pending, being contemplated by, or to the
         actual Knowledge of Buyer, threatened against Buyer.

                  (e) BROKERS' FEES. Buyer has not incurred any liability,
         contingent or otherwise, for brokers' or finders' fees relating to the
         Contemplated Transactions for which Seller shall be liable.

                  (f) KNOWLEDGEABLE INVESTOR. Buyer is an experienced and
         knowledgeable investor and operator in the oil and gas business. In
         making its decision to participate in this Agreement and the
         Contemplated Transactions, Buyer has relied solely on its own
         independent investigation, analysis and evaluation of the Assets.

                  (g) SECURITIES REPRESENTATION. Buyer is acquiring the Assets
         for its own account and not with a view to, or for offer of resale in
         connection with, a distribution thereof, within the meaning of the
         Securities Act of 1933, 15 U.S.C. Section 77a et seq., or any other
         Applicable Laws pertaining to the distribution of securities.

                  (h) FUNDING. Buyer has arranged to have available by the
         Closing Date sufficient funds, to enable the Buyer to pay in full the
         Purchase Price as herein provided and otherwise to perform its
         obligations under this Agreement.

                  (i) OPERATOR STATUS. Buyer is, or will be as of the Closing, a
         qualified operator in good standing with all Governmental Bodies having
         jurisdiction over the Assets.

                  (j) GOVERNMENTAL BODY APPROVAL. To Buyer's Knowledge, there
         are no facts or conditions with respect to the Assets that may cause
         any Governmental Body to withhold its unconditional approval of the
         Assignments or Deeds.

                  (k) LIMITATION. The foregoing representations and warranties
         are given by Buyer to Seller and are not intended to be given or used
         by any other Person not a Party to this Agreement.

         3.3 DISCLAIMER AND NOTIFICATIONS. THERE ARE NO WARRANTIES,
REPRESENTATIONS OR IMPLIED COVENANTS BETWEEN THE PARTIES EXCEPT THE MATTERS
EXPRESSLY PROVIDED FOR IN THIS AGREEMENT. THE PARTIES RESPECTIVELY DISCLAIM ANY
OTHER WARRANTIES OR REPRESENTATIONS INCLUDING, WITHOUT LIMITATION, ANY
WARRANTIES AND REPRESENTATIONS IMPLIED UNDER APPLICABLE LAW.

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                                       18
   24

                  (a) NO IMPLIED REPRESENTATIONS. IT IS EXPRESSLY UNDERSTOOD BY
         THE PARTIES HERETO THAT SELLER DOES NOT MAKE ANY REPRESENTATIONS OR
         WARRANTIES, EXPRESS OR IMPLIED, AS TO TITLE (EVEN FOR THE RETURN OF THE
         PURCHASE PRICE PAID) OR THE CONDITION OR STATE OF REPAIR OF THE ASSETS,
         THEIR VALUE, QUALITY, MERCHANTABILITY, SUITABILITY OR FITNESS FOR ANY
         USES OR PURPOSES, NOR AS TO THE CURRENT VOLUME, NATURE, QUALITY,
         CLASSIFICATION, OR VALUE OF THE OIL, GAS OR OTHER MINERAL RESERVES
         THEREUNDER OR COVERED THEREBY, NOR WITH RESPECT TO ANY APPURTENANCES
         THERETO BELONGING OR IN ANY WISE APPERTAINING TO SAID ASSETS, OR
         OTHERWISE. Seller has advised Buyer and Buyer has acknowledged that
         certain spills of Hydrocarbons, produced water and chemicals from oil
         and gas exploration, development, production or processing have
         occurred, or may have occurred, upon the Assets, which could have
         resulted in contamination of the soil, water, ground water, or
         improvements on the Assets. Furthermore, Seller has cautioned Buyer to
         thoroughly examine and inspect the Assets for any such conditions or
         violations and generally as to the condition of the Assets and its
         improvements, including a recommendation by Seller to Buyer that Buyer
         engage an environmental consulting firm to make an environmental survey
         of the Assets, and Buyer hereby acknowledges such obligations and
         assumes all liabilities associated therewith.

                  (b) BUYER'S INSPECTION OF THE ASSETS. Further, Buyer certifies
         that the Assets (including, but not limited to, any oil, gas or other
         mineral reserves underlying the Assets) have been, or will be prior to
         Closing, carefully inspected by Buyer; that Buyer is, or will be prior
         to Closing, familiar with their condition and value thereof, and the
         improvements and appurtenances (including electric wiring and machinery
         installed thereon) located on the Assets, inclusive of any
         Hydrocarbons, other soil contaminants or waste substances, whether
         similar or dissimilar, that may be present in the soil, water and
         groundwater; that Buyer has engaged, or has had the opportunity to
         engage prior to Closing, such contractors or consultants as Buyer deems
         prudent for tests and surveys of the soil, water, groundwater, Other
         Property, and improvements on the Assets; and that Buyer assumes any
         and all obligations, risks and liabilities associated therewith. Buyer
         acknowledges that the Assets have been or may have been used in
         connection with oil, gas and other mineral exploration, development and
         operations, as well as with respect to processing and refining
         operations, and, as such, equipment, appurtenances, processing and
         other facilities, plants, buildings, structures, improvements,
         abandoned and other tanks and piping (including above ground and
         underground tanks and piping), storage facilities, gathering and
         distribution lines, wells and other petroleum production facilities and
         appurtenances which have not been excepted and excluded from this
         conveyance may be located thereon. Further, Buyer acknowledges that the
         Assets may also contain unplugged wells, wellbores or buried pipelines
         or other equipment, whether or not of a similar nature, the locations
         of which may not now be known by Seller or be readily apparent through
         a physical inspection of the Assets. Buyer further accepts the Assets
         (including, but not limited to, any oil, gas or other minerals and/or
         mineral reserves underlying said Assets) AS IS, WHERE IS, IN THEIR
         PRESENT

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                                       19
   25


         CONDITION AND STATE OF REPAIR, AND WITHOUT ANY REPRESENTATIONS,
         GUARANTIES, OR WARRANTIES, EXPRESS OR IMPLIED, AS TO THEIR TITLE (EVEN
         FOR THE RETURN OF THE PURCHASE PRICE PAID), VALUE, QUALITY,
         MERCHANTABILITY, OR THEIR SUITABILITY OR FITNESS FOR BUYER'S INTENDED
         USE, OR FOR ANY USES OR PURPOSES WHATSOEVER, OR THAT THE ASSETS HAVE
         BEEN RENDERED FREE FROM ANY DEFECTS, HAZARDS, OR DANGEROUS CONDITIONS.
         FURTHERMORE, BUYER WAIVES ITS RIGHTS UNDER THE TEXAS DECEPTIVE TRADE
         PRACTICES ACT - CONSUMER PROTECTION ACT, SECTION 17.41, ET SEQ.,
         BUSINESS AND COMMERCE CODE, A LAW THAT GIVES CONSUMERS SPECIAL RIGHTS
         AND PROTECTIONS. AFTER CONSULTATION WITH AN ATTORNEY OF ITS OWN
         SELECTION, BUYER VOLUNTARILY CONSENTS TO THIS WAIVER.

                          BUYER'S SIGNATURE

                          By: __________________________

                          Its: _________________________

                  (c) DISCLAIMER. Without limiting the generality of the
         foregoing, but in furtherance of same, SELLER DISCLAIMS ANY AND ALL
         LIABILITY ARISING IN CONNECTION WITH ANY ENVIRONMENTAL MATTERS
         INCLUDING, WITHOUT LIMITATION, ANY PRESENCE OF NATURALLY OCCURRING
         RADIOACTIVE MATERIAL (NORM) ON THE ASSETS. IN ADDITION, THERE ARE NO
         WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED, AS TO THE ACCURACY
         OR COMPLETENESS OF ANY DATA, INFORMATION OR MATERIALS HERETOFORE OR
         HEREAFTER FURNISHED IN CONNECTION WITH THE ASSETS OR AS TO THE QUALITY
         OR QUANTITY OF THE HYDROCARBONS AND ANY OTHER MINERAL RESERVES, IF ANY,
         ATTRIBUTABLE TO THE INTEREST CONVEYED HEREIN OR THE ABILITY OF THE
         ASSETS TO PRODUCE HYDROCARBONS OR ANY OTHER MINERALS, AND ANY AND ALL
         DATA, INFORMATION AND MATERIAL FURNISHED BY SELLER IS PROVIDED AS A
         CONVENIENCE ONLY AND ANY RELIANCE ON OR USE OF THE SAME IS AT BUYER'S
         SOLE RISK.

                  (d) YEAR 2000 DISCLAIMER. THE CONTEMPLATED TRANSACTION SHALL
         BE WITHOUT ANY EXPRESS OR IMPLIED WARRANTY OR REPRESENTATION THAT ANY
         ASSETS EXCHANGED HEREUNDER SHALL IN ANY WAY WHATSOEVER BE MILLENNIUM
         COMPLIANT. FOR PURPOSES OF THIS AGREEMENT, "MILLENNIUM COMPLIANT" MEANS
         THAT THE ASSETS WILL ACCURATELY: (A) HANDLE DATA BEFORE, DURING, AND
         AFTER JANUARY 1, 2000, INCLUDING, BUT NOT LIMITED TO, ACCEPTING DATE
         INPUT, PROVIDING DATE OUTPUT, AND PERFORMING CALCULATIONS ON DATES OR
         PORTIONS OF DATES; (B) FUNCTION WITHOUT INTERRUPTION

- --------------------------------------------------------------------------------
                                       20
   26

         BEFORE, DURING, AND AFTER JANUARY 1, 2000, WITHOUT ANY CHANGE IN
         OPERATIONS ASSOCIATED WITH THE ADVENT OF THE NEW CENTURY (INCLUDING THE
         FACT THAT THE YEAR 2000 IS A LEAP YEAR); (C) ACCOMMODATE FOUR-DIGIT
         YEAR INPUT OR RESPOND TO TWO-DIGIT YEAR-DATE INPUT IN A WAY THAT
         RESOLVES THE AMBIGUITY AS TO CENTURY IN A DISCLOSED, DEFINED, AND
         PREDETERMINED MANNER; AND (D) STORE AND PROVIDE OUTPUT OF DATE
         INFORMATION IN WAYS THAT ARE UNAMBIGUOUS AS TO CENTURY.



                                    PART FOUR

                                    COVENANTS

         4.1 COVENANTS OF SELLER. Seller covenants with the Buyer as follows:

                      (a) ACCESS. From the date of execution of this Agreement
         until Closing except for such of the Assets not operated by Seller,
         Seller shall afford Buyer and Buyer's representatives full and
         reasonable access to the Assets in the possession of Seller during
         normal working hours.

                      (b) FILES. From the date of execution of this Agreement
         until Closing, Seller shall permit Buyer and its representatives at
         reasonable times during normal business hours to examine, in Sellers'
         offices at their actual location, all abstracts of title, title
         opinions, title files, ownership maps, lease files, accounting files,
         assignments, division orders, payout statements, agreements and other
         Contracts pertaining to the Assets insofar as the same may now be in
         existence and in the possession of Seller, except those which
         constitute Excluded Assets. From the date of execution of this
         Agreement until Closing, Seller shall make available to Buyer for
         inspection by Buyer at reasonable times during normal business hours at
         their actual location, all production and engineering books, records
         and data in possession of Seller which are directly related to the
         Assets, and all other files, records, and data pertaining to the
         Assets, except those which may constitute Excluded Assets.

                         (c) CONSENTS. Subject to Section 4.3(n), Seller shall
         use reasonable efforts to obtain all necessary waivers, consents,
         approvals, permits and authorizations and actions of third Persons to
         complete the Contemplated Transactions prior to Closing.

                         (d) CONDUCT OF BUSINESS. From the date of execution of
         this Agreement and until the Closing, Seller shall (i) operate the
         Assets, to the extent Seller is the operator thereof, in substantially
         the same manner as heretofore operated; (ii) maintain books of account
         and records with regard to the Assets in accordance with Seller's past
         practices; and (iii) pay its share of all costs and expenses
         attributable to the Assets in accordance with past

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                                       21
   27


         practices subject to its rights under the Final Recap set forth in
         Section 4.3(g). Without limitation of the foregoing but subject to the
         limitation set forth below, after the execution of the Agreement and
         prior to Closing, Seller shall have the right to make any changes,
         repairs or modifications, or incur any expenditures necessary or
         desirable in Seller's reasonable opinion for the protection of the
         Assets, required under the Contracts, or to comply with any Applicable
         Law or other legal requirement relative to the premises or to prevent
         or react to an emergency or environmental incident. Seller shall have
         the right to effect such expenditure or action with or without the
         approval of Buyer, acting as would any prudent operator under similar
         circumstances. Notwithstanding the foregoing, Seller shall not
         undertake or authorize any project, activity or expenditure in excess
         of $25,000 with respect to any one project without Buyer's prior
         written approval except as may be required (i) to respond to an
         emergency, (ii) by any Governmental Body or (iii) by the terms of any
         applicable Contract or Lease. Unless Buyer and Seller otherwise agree,
         Seller shall not sell, dispose or materially alter the Assets (other
         than the use of supplies and consumables) or remove any improvements,
         equipment or property which comprise the Assets (other than the use of
         supplies and consumables).

                  [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]










         4.2      COVENANTS OF BUYER.  Buyer covenants with Seller as follows:

                  (a) ASSUMED OBLIGATIONS. At Closing, Buyer shall assume the
         Assumed Obligations.

                  [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]







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                                       22
   28

                  (c) BUYER'S RESPONSIBILITIES. Except as otherwise provided for
         in Section 4.3(x) and the Transition Agreement, Buyer shall be
         responsible for the payment of all necessary and reasonable capital
         costs, Taxes, expenses and Burdens incurred against or applicable to
         the operation and use of the Assets from and after the Effective Date,
         whether invoiced or not. All production of Hydrocarbons from the Assets
         occurring from and after the Effective Date and all proceeds from or
         attributable thereto shall be the property of and belong to Buyer as of
         the Effective Date.

                  (d) PAYMENT OF BURDENS. Except as otherwise provided in the
         Transition Agreement, Buyer shall commence the payment of Burdens for
         all Hydrocarbons produced beginning the first day of the month
         following the month in which Seller has delivered to Buyer
         substantially all of the Records including without limitations Records
         relating to accounting, accounts payables, division orders and joint
         interest billings necessary to administer such payments.

                  (e) CONFIDENTIALITY. In the event that this Agreement is
         terminated or, if not terminated, until the Closing, all information
         made available to Buyer under Section 4.1 shall be maintained
         confidential by Buyer pursuant to the terms of the Confidentiality
         Agreement. The Confidentiality Agreement shall continue in force until
         Closing, or, in case of termination, in accordance with its terms.
         Buyer shall take whatever reasonable steps as may be necessary to
         ensure that Buyer's employees, consultants and agents comply with the
         provisions of this Section 4.2(e) and the provisions of the
         Confidentiality Agreement.

                  (f) SIGNAGE. Buyer agrees that, within thirty (30) days after
         the Closing, it will remove or cause to be removed the names and marks
         used by Seller or TEPI and all variations and derivatives thereof and
         logos relating thereto from the Assets and will not thereafter make any
         use whatsoever of such names, marks and logos.

                  (g) COMPLIANCE WITH LAWS. Buyer hereby covenants that it will
         comply with all Applicable Laws in its ownership and operation of the
         Assets. Buyer specifically covenants that it will comply with all
         Applicable Laws with respect to (i) all exploration, drilling,
         production, Plugging and Abandonment, and (ii) the control, regulation
         and prevention of pollution, including, but not limited to, saltwater
         discharge and contamination.

                  (h) RECOUPMENT OF OVERPAYMENTS. Buyer expressly agrees, at
         Seller's cost and expense, to reasonably assist Seller in recouping any
         monies from third Persons due to overpayments of royalties made prior
         to the Effective Date.

                  [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]

                           [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]
                  [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]

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                                       23
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                  (j) INSURANCE. Buyer covenants that all insurance obtained by
         Buyer during its term of ownership of the Assets covering environmental
         damage, third Person property damage, personal injury or death shall
         name Seller as an additional insured to the extent of Buyer's liability
         and indemnification obligations assumed herein, and shall contain a
         waiver of subrogation against Seller.

                  (k) ACCESS. Buyer shall afford Seller the right to enter onto
         and use the Assets and such other resources, including but not limited
         to water and power, as are reasonably necessary for Seller to remedy
         any Material Environmental Condition pursuant to Section 6.1(a).

                  (l) RADIO FREQUENCY. Buyer shall undertake as soon as is
         reasonably practical following the Closing to obtain a new pump-off
         controller radio frequencies.


         4.3 COVENANTS OF SELLER AND BUYER. Buyer and Seller agree as follows:

                  (a) PREFERENTIAL PURCHASE RIGHTS. With respect to preferential
         purchase rights:

                           (i) Within five (5) Business Days of Seller's receipt
                  from Buyer of Schedule 2.4, Seller shall send notice to the
                  holders of preferential purchase rights on the Assets. Seller
                  shall keep Buyer informed as receipt of responses from said

- --------------------------------------------------------------------------------
                                       24
   30

                  holders are received or the applicable exercise periods expire
                  without exercise or response from the holders.

                           (ii) To the extent any preferential purchase rights
                  are exercised to Seller's and Buyer's reasonable satisfaction,
                  then the Assets subject to such preferential purchase rights
                  shall not be sold to Buyer and shall be excluded from the
                  Agreement. The Purchase Price shall be adjusted by the portion
                  of the Allocated Value representing the portion of the Assets
                  subject to such exercised preferential right. In the event any
                  holder of a preferential right initially elects to exercise a
                  particular preferential right, but subsequently refuses or
                  elects not to consummate the purchase under the preferential
                  right and such refusal occurs prior to sixty (60) days
                  following the Closing Date, Buyer shall purchase such
                  interests covered by the preferential rights for its Allocated
                  Value as of the Effective Date and the closing of such
                  transaction shall take place on a date mutually acceptable to
                  Seller and Buyer not more than thirty (30) days following
                  Seller's notification to Buyer of such failure or refusal.

                           (iii) If a preferential purchase right has not been
                  waived or the time for exercise expired prior to Closing, the
                  Assets subject to such right shall be excluded from the Assets
                  conveyed at Closing and the Purchase Price reduced by the
                  Allocated Value of the affected Asset. If the time for
                  exercise expires or a waiver is obtained by the Seller within
                  60 days following the Closing, Buyer shall purchase the
                  affected Asset from Seller as of the Effective Date and the
                  closing of such transaction shall take place on a date
                  mutually acceptable to Seller and Buyer not more than thirty
                  (30) days following Seller's notification to Buyer for the
                  Allocated Value allocated to the affected Asset.

                           (iv) If the Seller has failed to offer a preferential
                  right to purchase and the holder of such right makes a timely
                  and enforceable demand upon Seller or Buyer to offer such
                  right, Buyer shall offer the preferential right to purchase to
                  such holder in accordance with the Contract creating such
                  preferential right to purchase.

                  (b) PRODUCT IMBALANCES. With respect to product imbalances
         from the Assets, the Parties agree as follows:

                           (i) UNDERPRODUCTION. The Purchase Price reflects
                  Seller's underproduced gas position (if any) under any
                  Contracts or wells included in the Assets as shown on Schedule
                  G. As of the Effective Date, Buyer shall assume all of
                  Seller's rights, obligations, liabilities and responsibilities
                  associated with Seller's underproduced gas position, including
                  any Taxes and royalties due or payable on the value of
                  Seller's underproduction and Seller shall have no further
                  rights or claims whatsoever with respect to the underproduced
                  gas. Seller and Buyer agree that the Purchase Price shall be
                  adjusted upward at the rate of $1.00 per mcf at Closing to
                  reflect the estimated value of any additional underproduction
                  not reflected on

- --------------------------------------------------------------------------------
                                       25
   31


                  Schedule G or any reduction in overproduction described in
                  Section 4.3(b)(ii). Any additional underproduced volumes or
                  reduction in overproduction accrued prior to the Effective
                  Date and identified after Closing shall be accounted for as
                  provided in Section 4.3(g) at the same rate of $1.00 per mcf.

                           (ii) OVERPRODUCTION. The Purchase Price reflects
                  Seller's overproduced gas position (if any) under any
                  Contracts or wells included in the Assets as shown on Schedule
                  G. As of the Effective Date, Buyer hereby agrees to and shall
                  assume all rights to Seller's overproduced gas position (but
                  not including the gas actually overproduced) including the
                  right to recoup Taxes and royalties associated with such
                  overproduction, as well as all of Seller's liabilities,
                  responsibilities and obligations to third Persons associated
                  with such overproduced gas position and Seller shall have no
                  further rights, liabilities, obligations or responsibilities
                  whatsoever with respect to the overproduced gas. Seller and
                  Buyer agree that the Purchase Price shall be adjusted downward
                  at the rate of $1.00 per mcf at Closing to reflect the
                  estimated value of any additional overproduction not reflected
                  on Schedule G or reduction in underproduction described in
                  4.3(b)(i). Any additional overproduced volumes or reductions
                  in underproduction accrued prior to the Effective Date and
                  identified after Closing shall be accounted for as provided in
                  Section 4.3(g) at the same rate of $1.00 per mcf.

                  (c) OPERATORSHIP. Unless otherwise provided in the Transition
         Agreement, Buyer shall assume Seller's obligations for operatorship of
         any Seller-operated Assets conveyed herein at 7:00 a.m. local time on
         April 1, 2000, and shall perform all duties required in the course of
         business, including, but not by the way of limitation, paying Burdens
         and Taxes, pumping and gauging wells, working over wells, drilling new
         wells, filing all necessary reports required by Applicable Law or
         otherwise, and performing maintenance and/or repair work on the Assets.
         To the extent required under any Contract that affects any Asset and
         only after Buyer has used its commercially reasonable efforts to assume
         operatorship of such Asset, Seller will continue to operate said Asset
         pursuant to the Transition Agreement until the new operator can be
         properly selected. Seller does not warrant or represent that Buyer
         shall succeed Seller as operator of any Asset; however, Seller shall
         recommend to its working interest owners that Buyer succeed as operator
         of such Properties operated by Seller.

                  (d)      [this section intentionally left blank].

                  [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]





[TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]

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                                       26
   32




































                  (i) BUYER'S RESPONSIBILITY. In the event Seller is required to
         continue to operate any of the Assets after the Closing Date pursuant
         to an applicable operating agreement or the Transition Agreement, Buyer
         shall be responsible for the payment of all necessary and reasonable
         capital costs, Taxes, expenses and Burdens incurred against or
         applicable to the operation and use of the Assets from and after the
         Effective Date, whether invoiced or not.

- --------------------------------------------------------------------------------
                                       27
   33

         Buyer shall be responsible for prorated estimates of ad valorem taxes
         in the absence of actuals. Further, all production from the wells
         located on or attributable to the Assets and all proceeds from or
         attributable to production from the Assets and sale thereof shall be
         the property of and belong to Buyer from and after the Effective Date.

                  (j) ACCESS TO DOCUMENTS. Each Party shall provide reasonable
         access to all relevant documents, data and other information which may
         be required by the other Party for the purpose of preparing tax returns
         and responding to any audit by any Governmental Body. Each Party shall
         cooperate with all reasonable requests of the other Party made in
         connection with contesting the imposition of Taxes. Notwithstanding
         anything to the contrary in this Agreement, neither Party shall be
         required at any time to disclose to the other Party any tax returns or
         other confidential tax information.


                  [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]










                  (l) FURTHER ASSURANCES. After Closing, Seller and Buyer agree
         to take such further actions and to execute, acknowledge and deliver
         all such further documents necessary or useful in carrying out the
         purposes of this Agreement or of any document delivered pursuant
         hereto.

                  [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]


                           [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]


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                                       28




   34



                  [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]

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                                       29
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                  (n) CERTAIN FILINGS, CONSENTS AND PERMITS. With respect to
         certain filings and consents required by any Governmental Body, the
         Parties agree that Buyer and Seller shall cooperate with one another to
         make all filings necessary and to obtain any necessary consents,
         permits, authorizations, approvals or waivers, including but not
         limited to filings with the Texas Railroad Commission, Oklahoma
         Corporation Commission, or such other state agency having jurisdiction
         over the Assets.

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                                       30
   36

                  Without limitation of the foregoing, Seller shall endeavor to
         obtain, and Buyer shall cooperate in connection with such endeavors,
         each consent set forth on Schedule 3.1 (h).

                  (O)      CONSENTS.

                           (i) If the holder of the right to consent or party to
                  a maintenance of uniform interest provision affirmatively
                  refuses to consent or waive prior to Closing, such refusal
                  shall be automatically considered a Title Defect without the
                  necessity of Buyer sending a Defect Notice to Seller as
                  required under Section 4.3 (m) (i) .

                           (ii) Except for approvals from Governmental Bodies
                  normally received subsequent to assignment, if Seller believes
                  a consent or waiver may be obtained subsequent to Closing, the
                  Property shall be excluded from the Assets conveyed at Closing
                  and the Purchase Price reduced by the Allocated Value (or
                  portion thereof) and held by Seller for the benefit of Buyer
                  after Closing and Seller shall provide Buyer with the economic
                  benefits thereof until such consent or waiver is received or
                  until sixty (60) days following Closing, if later. If Seller
                  obtains the consent or waiver on or before sixty (60) days
                  following Closing, then Seller shall deliver conveyances of
                  the Property to Buyer and Buyer shall pay to Seller the
                  Allocated Value (or portion thereof). If the consent or waiver
                  is not obtained or is affirmatively refused on or before sixty
                  (60) days following Closing, Buyer shall refund to Seller any
                  net revenues (revenues net of costs and Burdens) received by
                  Buyer in connection with such affected portion of the Property
                  and Seller's holding for the benefit of Buyer shall terminate,
                  unless Buyer waives the requirement for obtaining the consent
                  and agrees to accept the Asset and pay the value allocated to
                  the Asset pursuant to Schedule 2.4 in exchange for Seller's
                  conveyance of the Asset.

                  (p) RISK OF LOSS. If, prior to the Closing Date, all or any
         material portion of an Asset is damaged or destroyed by fire or other
         casualty, is taken in condemnation or under the right of eminent domain
         or proceedings for such purposes are pending or threatened, Buyer shall
         purchase such portion of the Assets, notwithstanding any such damage,
         destruction, taking or pending or threatened taking. Seller shall pay
         to Buyer (as an adjustment to the Purchase Price) all sums paid to
         Seller by third Persons by reason of the damage, destruction or taking
         of such portion of the Assets to be assigned to Buyer or to the extent
         Seller is self-insured an amount equal to the value of the damage or
         destruction, and shall assign, transfer and set over to Buyer all of
         the right, title and interest of Seller in and to any unpaid awards or
         other payments from third Persons arising out of the damage,
         destruction, taking or pending or threatened taking as to such
         interest. If prior to the Closing Date, the applicable Assets are
         damaged or destroyed by fire or other casualty and the sums transferred
         to Buyer pursuant to the foregoing sentence do not equal the amount
         necessary to replace or restore the pertinent Assets to the condition
         they were in prior to such fire or casualty (including, without
         limitation, those circumstances in which Seller is self-insured),
         Seller shall pay to Buyer, or the Purchase Price shall be reduced by
         the

- --------------------------------------------------------------------------------
                                       31
   37


         additional amount necessary to repair or replace all damaged or
         destroyed Assets or restore the Assets to their condition prior to the
         fire or casualty loss. If the sums that Seller would be responsible for
         pursuant to the foregoing sentence exceed fifty percent (50%) of the
         Allocated Value of the pertinent Asset, Seller may elect to remove the
         Asset from the sale and reduce the Purchase Price by the allocated
         value of the pertinent Asset. Seller shall not voluntarily compromise,
         settle or adjust any material amounts payable by reason of any material
         damage, destruction, taking or pending or threatened taking as to any
         Asset without first obtaining the written consent of Buyer, which shall
         not be unreasonably withheld.

                  (q) POST-CLOSING ACCESS. Except as otherwise expressly
         provided herein, from and after the Closing Date, Buyer and Seller
         shall reasonably cooperate and afford each other or cause to be
         afforded to their respective officers, employees, accountants and other
         representatives access, upon reasonable notice, during business hours
         with respect to the facility to which access has been requested, to
         review and copy the books, documents, databases or other records
         relating to the Assets not including the Excluded Assets (which books,
         documents, databases, records, or employees files or other information
         the Parties shall cooperate and assist one another in identifying and
         locating), interview, depose or seek testimony of employees with
         knowledge of the Assets, provide assistance in proceedings with
         employees with knowledge of the Assets as witnesses or advisors,
         investigate the physical premises, take photographs or videotapes,
         identify employees and contractors with knowledge of any matter which
         is the subject of a claim for which a Party has responsibility and make
         such employees available to such Party and provide reasonable office
         space to do any of the foregoing in connection with any matter
         affecting or alleged to affect the Party requesting such access.

                  (r) FILING AND RECORDING OF ASSIGNMENTS, ETC. Buyer shall be
         solely responsible for recording of the Deeds, Assignments and Oil and
         Gas Leases and any other documents related to the Assets and shall
         promptly provide Seller with recorded copies of same. Further, Buyer
         shall be responsible for any recording or filing fees and documentary
         or transfer Taxes resulting from the Contemplated Transactions.

                  (s) EMPLOYEE MATTERS. Buyer shall have no obligation, but
         shall have the right to solicit the field employees of Seller (and any
         other employees of Seller that Seller identifies in writing) who work
         directly on or in connection with the Assets ("Employees"), and shall
         have no obligation but shall have the right to offer employment to and
         hire any such Employees. If Buyer hires any Employee, the terms of
         employment shall be at Buyer's discretion. Seller is and shall be
         responsible for any and all employees not hired by Buyer to the extent
         any of Seller's employees are affected by the Contemplated
         Transactions.

                  (t) [this section intentionally left blank].

                  (u) [this section intentionally left blank].



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                                       32
   38

                  (v) JOINT USE AGREEMENTS. Buyer and Seller shall, from and
         after the date of this Agreement, use their reasonable best efforts to
         negotiate and execute on or before the Closing in the case of items
         identified five (5) days prior to Closing or as soon thereafter as
         reasonably practical, mutually agreeable joint use agreements for the
         use and management of (i) the facilities and other equipment identified
         in Schedule 4.3(v) and incorporating, among others, the terms and
         conditions set forth in Schedule 4.3(v) and (ii) any other facilities
         and equipment used immediately prior to the Effective Date to operate
         or produce both (A) assets and properties being retained by Seller and
         (B) the Assets operated by Seller and which are identified in writing
         by the Buyer within ninety (90) days after Buyer assumes operations of
         the affected Asset.

                  (w) [this section intentionally left blank]

                  (x) [this section intentionally left blank].

                  (y) HSR FILINGS. Buyer and Seller shall promptly make all
         filings required under the HSR Act.

                                    PART FIVE

                              CONDITIONS TO CLOSING

         5.1 SELLER'S CLOSING CONDITIONS. The obligations of Seller to
consummate the Contemplated Transactions are subject to the following
conditions:

                  (a) REPRESENTATIONS AND WARRANTIES TRUE AT CLOSING. The
         representations and warranties of Buyer contained in the Agreement or
         in connection with the Contemplated Transactions were true and correct
         when made, and shall be true and correct on and as of the Closing Date
         as though such representations and warranties were made at and as of
         such date except as otherwise expressly provided herein.

                  (b) COMPLIANCE WITH AGREEMENT. On and as of the Closing Date,
         Buyer shall have performed and complied with all agreements, covenants,
         and conditions required by this Agreement, the Four Star PSA and the
         TEPI PSA to be performed and complied with prior to or on the Closing
         Date.

                  (c) INJUNCTION. As of the Closing Date, no suit, action or
         other proceeding (excluding any such matter initiated by Seller) shall
         be pending or threatened before any court or governmental agency
         seeking to restrain Seller or prohibit the Closing or seeking damages
         against Seller as a result of the consummation of this Agreement or the
         Contemplated Transactions.

                  (d) CERTIFIED RESOLUTIONS AND OFFICERS' CERTIFICATE. Buyer
        shall have delivered to Seller (i) a certificate dated the Closing Date
        signed by the Secretary or an Assistant

- --------------------------------------------------------------------------------
                                       33
   39


         Secretary of Buyer with respect to the action of the Buyer's Board of
         Directors authorizing the transactions contemplated by the Agreement,
         and (ii) a certificate, dated the Closing Date and signed by the
         President or a Vice President of Buyer certifying in such detail as
         Seller may reasonably request to the fulfillment of the conditions
         specified in subparagraphs (a) and (b) of this Section 5.1, in the form
         attached as Exhibit D.

                  (e) APPROVAL OF PROCEEDINGS. All actions, proceedings,
         instruments and documents required of Buyer to carry out the Agreement,
         or incidental thereto, and all other related legal matters shall have
         been approved by Nanette J. Crawford, Esq., as counsel for Seller,
         which approval shall not be unreasonably withheld.

                  (f) [This section intentionally left blank].

                  (g) CONVEYANCE. Buyer shall execute, acknowledge and deliver
         to Seller the Assignments, Deeds and Oil and Gas Leases substantially
         in the form of Exhibits A, B-1, B-2 and C as well as change of operator
         forms required by Applicable Laws and such other documents as may be
         necessary to carry out the purposes of the Agreement.

                  (h) LETTERS IN LIEU. Buyer and Seller shall execute,
         acknowledge and deliver all letters in lieu as set forth in Section
         4.3(f).

                  (i) SECURITY. Any security required by Seller of Buyer
         contemplated in Section 4.2(i)(ii) shall have been obtained.

                  (j) [this section intentionally left blank].

                  (k) JOINT USE AGREEMENTS. Buyer and Seller shall have
         executed, acknowledge and delivered, on or before the Closing, certain
         joint use agreements as described in Section 4.3(v).

                  (l) [this section intentionally left blank].

                  [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]


                  (n) [this section intentionally left blank]

                  [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]




[TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]

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                                       34
   40

                  (p) [this section intentionally left blank].

                  (q) BARGO GUARANTY. Buyer shall have delivered to Seller, in a
         form mutually agreeable to both Buyer and Seller, the guaranty of Bargo
         Energy Company guaranteeing the performance of the Buyer under this
         Agreement.

                  (r) TRANSITION AGREEMENT. Buyer and TEPI shall have executed
         and delivered the Transition Agreement.

                  (s) HSR ACT. All necessary filings and notifications under the
         HSR Act shall have been made, including any required additional
         information or documents, and the waiting period referred to in such
         Act applicable to the transactions contemplated hereby shall have
         expired or been terminated.

         5.2 BUYER'S CLOSING CONDITIONS. The obligations of Buyer to consummate
the Contemplated Transactions are subject to the following conditions:

                  (a) REPRESENTATIONS AND WARRANTIES TRUE AT CLOSING. The
         representations and warranties of Seller contained in the Agreement or
         in connection with the Contemplated Transactions were true and correct
         when made, and shall be true and correct on and as of the Closing Date
         as though such representations and warranties were made at and as of
         such date except as otherwise expressly provided herein.

                  (b) COMPLIANCE WITH AGREEMENTS. On and as of the Closing Date,
         Seller shall have performed and complied with all agreements,
         covenants, and conditions required by the Agreement to be performed and
         complied with prior to or on the Closing Date. Four Star Oil & Gas
         Company and TEPI shall have performed and complied with all agreements,
         covenants and conditions required by the TEPI PSA and the Four Star
         PSA.

                  (c) INJUNCTION. As of the Closing Date, no suit, action or
         other proceeding (excluding any such matter initiated by Buyer) shall
         be pending or threatened before any court or governmental agency
         seeking to restrain Buyer or prohibit the Closing or seeking damages
         against Buyer as a result of the consummation of this Agreement or the
         Contemplated Transactions.

                  (d) CERTIFIED RESOLUTIONS AND OFFICERS' CERTIFICATE. Seller
        shall have delivered to Buyer (i) a certificate dated the Closing Date
        signed by the Secretary or an Assistant Secretary of Seller with respect
        to the action of the Seller's Board of Directors authorizing the
        transactions contemplated by the Agreement, and (ii) a certificate,
        dated the Closing Date and signed by the President or a Vice President
        of Seller certifying in such detail as Buyer may reasonably request to
        the fulfillment of the conditions specified in subparagraphs (a) and (b)
        of this Section 5.2 in the form attached as Exhibit E.


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                                       35
   41

                  (e) APPROVAL OF PROCEEDINGS. All actions, proceedings,
         instruments and documents required of Seller to carry out the
         Agreement, or incidental thereto, and all other related legal matters
         shall have been approved by Haynes and Boone, L.L.P., as counsel for
         Buyer, which approval shall not be unreasonably withheld.

                  (f) [This section intentionally left blank].

                  (g) CONVEYANCE. Seller shall execute, acknowledge and deliver
        to Buyer the Assignments, Deeds and Oil and Gas Leases substantially in
        the form of Exhibits A, B-1, B-2 and C, as well as change of operator
        forms required by Applicable Laws and such other documents as may be
        necessary to carry out the purposes of the Agreement.

                  (h) LETTERS IN LIEU. Buyer and Seller shall execute,
         acknowledge and deliver all letters in lieu as set forth in Section
         4.3(f).

                  (i) [This section intentionally left blank].

                  (j) JOINT USE AGREEMENTS. Buyer and Seller shall have
         executed, acknowledge and delivered, on or before the Closing, certain
         joint use agreements as described in Section 4.3(v).

                  (k) [This section intentionally left blank].

                  [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]


                  (m) [This section intentionally left blank].

                  (n) TRANSITION AGREEMENT. Buyer and TEPI shall have executed
         and delivered the Transition Agreement.

                  (o) HSR ACT. All necessary filings and notifications under the
         HSR Act shall have been made, including any required additional
         information or documents, and the waiting period referred to in such
         Act applicable to the transactions contemplated hereby shall have
         expired or been terminated.

          [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]





[TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]

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                                       36
   42







                                    PART SIX

                [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]

                [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]




                [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]

















                [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]



                [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]

                           [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]

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                                       37
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         [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]


         [TEXT OMITTED - CONFIDENTIAL TREATMENT REQUESTED]

                                   PART SEVEN

                                      TAXES

         Section 7.1 PAYMENT AND APPORTIONMENT OF REAL PROPERTY TAXES AND
PERSONAL PROPERTY TAXES. With respect to Taxes:

         (a) Real and Personal Property Taxes. Real property taxes and personal
property taxes ("Real and Personal Property Taxes") for the year in which the
Effective Date occurs shall be apportioned as of the Effective Date between
Seller and Buyer. Seller shall be liable for the portion of such Real and
Personal Property Taxes based upon the number of days in the year occurring
prior to the Effective Date, and Buyer shall be liable for the portion of such
taxes based upon the number of days in the year occurring on and after the
Effective Date. For any year in which an apportionment is required, Buyer shall
file all required reports and returns incident to these taxes and shall remit to
the appropriate taxing authorities all such taxes assessed for the year in which
the Effective Date occurs. Seller may pay to Buyer, at the time of Buyer's
remittance, Seller's share of such taxes.


         (b) Liability and Right to Pursue Claims. Seller shall retain liability
for all adjustments, examinations or claims relating to Taxes that are paid by
Seller and that are allocated to Seller pursuant to this Section 7.1. Seller
shall administer and defend any examination, claim or adjustments arising in
connection with Taxes to be paid by Buyer but which are allocated to Seller
pursuant to this Section 7.1.

         Section 7.2 OTHER TAXES. All excise, windfall profit and other Taxes
relating to production of Hydrocarbons attributable to the Assets prior to the
Effective Date shall be allocated to Seller, and all such Taxes relating to
production on or after the Effective Date shall be apportioned to Buyer.

         Section 7.3 SALES TAXES. The Purchase Price does not include any sales
Taxes or other transfer Taxes imposed in connection with the sale of the Assets.
Buyer shall pay any sales Tax




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or other transfer Tax, as well as any applicable conveyance, transfer and
recording fee, and real estate transfer stamps or taxes imposed on the transfer
of the Assets pursuant to the Agreement. If Buyer is of the opinion that it is
exempt from the payment of such sales Tax or other transfer Tax, Buyer shall
furnish to Seller the appropriate tax exemption certificate.

         Section 7.4 COOPERATION. Each Party to the Agreement shall provide the
other Party with reasonable access to all relevant documents, data and other
information which may be required by the other Party for the purpose of
preparing Tax returns, establishing or defending a Tax position and responding
to any audit by any taxing jurisdiction. Each Party to the Agreement shall
cooperate with all reasonable requests of the other Party made in connection
with contesting the imposition of Taxes. Notwithstanding anything to the
contrary in the Agreement, neither Party to the Agreement shall be required at
any time to disclose to the other Party any Tax returns or other confidential or
privileged Tax information.

         Section 7.5 TAX PROCEEDINGS. In the event Buyer receives notice of any
examination, claim, adjustment or other proceeding relating to the liability for
Taxes of or with respect to Seller for any period Seller is or may be liable
under the Agreement, Buyer shall within ten (10) days notify Seller in writing
thereof. As to any such Taxes for which Seller is or may be liable under the
Agreement, and Seller does not contest such liability as against Buyer, Seller
shall be entitled at Seller's expense to control or settle the contest of such
examination, claim, adjustment or other proceeding, provided Seller notifies
Buyer in writing within thirty (30) days after receipt of the notice described
in the preceding sentence that Seller desires to do so. The Parties shall
cooperate with each in the negotiations and settlement of any proceeding
described in this Section 7.5. Buyer shall provide, or cause to be provided, to
Seller necessary authorizations, including powers of attorney, to control any
proceeding which Seller is entitled to control pursuant to Part 7.

         Section 7.6 PURCHASE PRICE ALLOCATION. The allocation of Purchase Price
provided for in this Agreement is intended to comply with the allocation method
required by Section 1060 of the Code. Buyer and Seller shall cooperate to comply
with all substantive and procedural requirements of Section 1060 and regulations
thereunder. Buyer and Seller agree that each will not take for income Tax
purposes, or permit any Affiliate to take, any position inconsistent with the
allocation of Purchase Price prescribed in this Agreement.

         Section 7.7 RESERVATION OF SECTION 29 CREDITS. Seller retains the
right, at its option, to pursue Tax credits authorized by Section 29 of the
Code, if any, applicable to any production operations occurring prior to the
Closing Date. Buyer agrees to reasonably cooperate at Seller's cost and afford
Seller and its representatives, upon reasonable notice, during business hours,
time to review and copy any files, documents, databases, records, or other
information, necessary to establish or defend a claim for such Tax credits.

         Section 7.8 RESERVATION OF SECTION 43 CREDITS. Seller retains the
right, at its option, to pursue Tax credits authorized by Section 43 of the
Code, if any, applicable to any qualified projects occurring prior to the
Closing Date. Buyer agrees to reasonably cooperate at Seller's

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cost and afford Seller and its representatives, upon reasonable notice, during
business hours, time to review and copy any files, documents, databases,
records, or other information necessary to establish or defend a claim for such
Tax credits.




                                   PART EIGHT

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                                    PART NINE

                                  MISCELLANEOUS

         9.1 SUCCESSORS AND ASSIGNS. This Agreement shall inure to the benefit
of and be binding upon the successors and assigns of the respective Parties.

         9.2 WAIVERS AND AMENDMENTS. All amendments and other modifications
hereof shall be in writing and signed by each of the Parties. Any Party may by
written instrument (i) waive compliance by the other Party with, or modify any
of, the covenants or agreements made by the

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other Party in this Agreement or (ii) waive or modify performance of any of the
obligations or other acts of the other Party. The delay or failure on the part
of any Party to insist, in any one instance or more, upon strict performance of
any of the terms or conditions of this Agreement, or to exercise any right or
privilege herein conferred shall not be construed as a waiver of any such terms,
conditions, rights or privileges but the same shall continue and remain in full
force and effect. All rights and remedies are cumulative.

         9.3 NOTICES. All notices, consents and other communications under this
Agreement shall be in writing and shall be deemed to have been duly given (a)
when delivered by hand, (b) when sent by telecopier (with receipt confirmed),
provided that a copy is promptly thereafter mailed in the USA by first class
postage prepaid mail, (c) when received by the addressee, if sent by Express
Mail, Federal Express, other express delivery service (receipt requested) or by
such other means as the Parties may agree from time to time or (d) five (5)
Business Days after being mailed in the USA, by first class postage prepaid
registered or certified mail, return receipt requested; in each case to the
appropriate address and telecopier number set forth below (or to such other
address and telecopier number as a Party may designate as to itself by notice to
the other Party):

                           (i)      if to Seller:
                                            McFarland Energy, Inc.
                                            Attn:  Paula Gatens
                                            1111 Bagby
                                            Houston, Texas  77002
                                            Phone: 713-752-4619
                                            Fax:  713-752-7998

                           (ii)      if to the Buyer:
                                            Bargo Petroleum Corporation
                                            Attn:  Mr.  Jon Clarkson
                                            700 Louisiana, Suite 3700
                                            Houston, Texas 77002
                                            Phone: 713-236-9792
                                            Fax: 713-236-9799

Each Party shall have the right upon giving ten (10) Business Days prior written
notice to the other in the manner hereinabove provided, to change its address
for purposes of notice.

         9.4 COUNTERPARTS. This Agreement may be executed in one or more
counterparts, each of which shall be an original, but all of which together
shall constitute one and the same document.

         9.5 ENTIRE AGREEMENT. This Agreement, including the Exhibits and
Schedules hereto, contains the entire agreement between the Parties hereto with
respect to the subject matter hereof and supersedes all prior discussions,
understandings, agreements and undertakings between the Parties hereto relating
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consistent or inconsistent, oral or written which are intended to be part of the
Parties' understanding which have not been incorporated into this Agreement,
including the Exhibits and Schedules.

         9.6 SELLER'S OPTION TO ELECT A TAX DEFERRED EXCHANGE. Seller retains
the right to sell its interest in the Assets to Buyer as a non-simultaneous
like-kind property exchange for cash pursuant to Section 1031 of the Internal
Revenue Code of 1986. Seller shall have the right to elect this tax-deferred
exchange at any time prior to the date of Closing. Buyer agrees to execute
additional escrow instructions, documents, agreements, or instruments to effect
the exchange, provided that Buyer shall incur no material additional costs,
expenses, fees or liabilities as a result of or in connection with the exchange.

         9.7 SEVERABILITY. Every provision in this Agreement is intended to be
severable. If any term or provision hereof is held to be illegal or invalid for
any reason whatsoever, all other conditions and provisions of this Agreement
shall nevertheless remain in full force and effect so long as the economic or
legal substance of Contemplated Transactions is not affected in a materially
adverse manner with respect to either Party.

         9.8 APPLICABLE LAW. This Agreement shall be governed by and
interpreted, construed and enforced in accordance with the laws of the State of
Texas, except to the extent mandatorily governed by the laws of the state in
which the Assets are located

         9.9 EXPENSES. Except as specified herein and as the Parties may
otherwise agree, each Party shall be solely responsible for all expenses
incurred by it in connection with any and all Contemplated Transactions.

         9.10 LAWS AND REGULATIONS. This Agreement is subject to all Applicable
Laws.

         9.11 PUBLIC ANNOUNCEMENTS. The Parties hereto agree that prior to
making any public announcement or statement with respect to the Contemplated
Transaction, the Party desiring to make such public announcement or statement
shall provide the other Party with a copy of the proposed announcement or
statement at least seven (7) Business Days prior to the intended release date of
such announcement. The other Party shall thereafter consult with the Party
desiring to make the release, and the Parties shall exercise their reasonable
best efforts to (i) agree upon the text of a joint public announcement or
statement to be made by both such Parties or (ii) in the case of a statement to
be made solely by one Party, obtain approval of the other Party hereto to the
text of a public announcement or statement. Nothing contained in this paragraph
shall be construed to require either Party to obtain approval of the other Party
hereto to disclose information with respect to the Contemplated Transaction to
any Governmental Body to the extent required by Applicable Law or necessary to
comply with disclosure requirements of the New York Stock Exchange or any other
regulated stock exchange.

         9.12 ASSIGNABILITY. The rights and obligations created or assumed
hereunder shall not be assignable or delegable by either Party and any
assignment thereof shall be void ab initio.


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         9.13 PROVISIONS SURVIVE CLOSING. All representations and warranties
contained in the Agreement shall survive the Closing and continue with respect
to claims made on or before twelve months following the Closing Date. Except as
otherwise provided herein, the covenants, indemnities and agreements made
hereunder or pursuant hereto shall survive Closing and be and remain enforceable
and continue in full force and effect as to their terms and conditions following
Closing and shall not be deemed to have been merged into the Closing or into the
assignments or other closing documents.

         9.14 DISPUTE RESOLUTION. Any and all disputes, controversies or claims
relating to or arising out of the Contemplated Transactions shall be resolved in
accordance with the dispute resolution procedures outlined in Schedule 9.14
attached hereto and made a part hereof for all intents and purposes. The Parties
further agree that neither Party will institute litigation against the other
Party, their Affiliates and each of their respective officers, directors,
shareholders, agents and representatives relating to or arising out of the
Contemplated Transactions, except as provided in the attached Schedule 9.14 and
that the terms and provisions of this Section 9.14 shall survive the termination
of this Agreement.

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IN WITNESS WHEREOF, the Parties hereto have executed this Agreement as of the
date first above written.

                                     SELLER:

                                     McFARLAND ENERGY, INC.


                                     -----------------------------------
                                     NAME:  J. K. Hendrickson

                                     TITLE:  Attorney-in-Fact
                                     Tax ID: 95-2756635



                                     BUYER:
                                     BARGO PETROLEUM CORPORATION



                                     -----------------------------------
                                     NAME:

                                     TITLE:
                                     Tax ID: 75-2526762




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