HOME STAKE OIL & GAS CO
8-K, EX-2, 2000-10-10
OIL & GAS FIELD EXPLORATION SERVICES
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                                                                   EXHIBIT 2




                                    AGREEMENT

                                       AND

                                 PLAN OF MERGER








                                      Among



                       Cortez Oil & Gas, Inc. ("Parent"),


                    Cortez Acquisition Company ("Merger Sub")


                                       And


                    Home-Stake Oil & Gas Company ("Company")









                                 October 3, 2000



<PAGE>




                                TABLE OF CONTENTS

                                                                           Page

ARTICLE 1

  DEFINITIONS.................................................................2
  1.1      Defined Terms......................................................2
  1.2      References and Titles.............................................10

ARTICLE 2

  THE MERGER.................................................................11
  2.1      The Merger........................................................11
  2.2      Effect of the Merger..............................................11
  2.3      Governing Instruments, Directors and Officers of the
             Surviving Corporation...........................................11
  2.4      Effect on Securities..............................................11
  2.5      Exchange of Certificates/Option Agreements/Severance
             and Bonus Payments..............................................13
  2.6      Closing...........................................................15
  2.7      Effective Time of the Merger......................................15
  2.8      Taking of Necessary Action; Further Action........................15

ARTICLE 3

  REPRESENTATIONS AND WARRANTIES OF THE COMPANY..............................15
  3.1      Organization......................................................15
  3.2      Other Equity Interests............................................16
  3.3      Authority and Enforceability......................................16
  3.4      No Violations.....................................................16
  3.5      Consents and Approvals............................................17
  3.6      SEC Documents.....................................................17
  3.7      Capital Structure.................................................18
  3.8      No Undisclosed Liabilities........................................18
  3.9      Indemnification...................................................19
  3.10     Absence of Certain Changes or Events..............................19
  3.11     Compliance with Laws, Material Agreements and Permits.............21
  3.12     Governmental Regulation ..........................................21
  3.13     Litigation........................................................22
  3.14     No Restrictions...................................................22
  3.15     Audits and Settlements............................................22
  3.16     Taxes.............................................................23
  3.17     Employment Benefit Plans..........................................24
  3.18     Company Material Agreements.......................................26
  3.19     Labor and Employment Matters......................................26
  3.20     Accounts Receivable...............................................27
  3.21     Insurance.........................................................27

                                       -i-

<PAGE>

  3.22     Intangible Property...............................................28
  3.23     Title to Assets ..................................................28
  3.24     Company Engineering Report........................................28
  3.25     Oil and Gas Operations............................................28
  3.26     Hydrocarbon Sales and Purchase Agreements.........................29
  3.27     Financial and Commodity Hedging...................................30
  3.28     Environmental Matters.............................................30
  3.29     Books and Records.................................................32
  3.30     Brokers...........................................................32
  3.31     Powers of Attorney; Authorized Signatories........................32
  3.32     Vote Required.....................................................32
  3.33     Fairness Opinion..................................................33
  3.34     Disclosure and Investigation......................................33
  3.35     Real Property.....................................................33
  3.36     Expiring Acreage..................................................33
  3.37     Other Fees........................................................33
  3.38     Key Employee Incentive Bonus Plan.................................33

ARTICLE 4

  REPRESENTATIONS AND WARRANTIES OF PARENT AND MERGER SUB....................33
  4.1      Organization......................................................33
  4.2      Authority and Enforceability......................................34
  4.3      No Violations.....................................................34
  4.4      Consents and Approvals............................................34
  4.5      Interim Operations of Merger Sub..................................35
  4.6      Financing.........................................................35
  4.7      Brokers...........................................................35
  4.8      Disclosure and Investigation......................................35

ARTICLE 5

  COVENANTS..................................................................36
  5.1      Conduct of Business by the Company Pending Closing................36
  5.2      Access to Assets, Personnel and Information.......................38
  5.3      No Solicitation...................................................40
  5.4      Third-Party Standstill Agreements ................................40
  5.5      Shareholders Meeting..............................................41
  5.6      Proxy Statement...................................................41
  5.7      Additional Arrangements...........................................42
  5.8      Public Announcements..............................................42
  5.9      Notification of Certain Matters...................................42
  5.10     Payment of Expenses...............................................43
  5.11     Indemnification and Insurance.....................................43
  5.12     Shareholder Litigation............................................45

                                      -ii-
<PAGE>


  5.13     Opinion of Financial Advisor......................................45
  5.14     Resignations of Officers and Directors of the Company.............45
  5.15     Other Agreements..................................................45
  5.16     Option Surrender Agreements.......................................45
  5.17     Financing.........................................................45
  5.18     Separation Agreements.............................................46
  5.19     Retirement Agreement..............................................46
  5.20     Deferred Compensation Agreements..................................46

ARTICLE 6

  CONDITIONS.................................................................46
  6.1      Conditions to Each Party's Obligation to Effect the Merger........46
  6.2      Conditions to Obligations of Parent and Merger Sub. ..............47
  6.3      Conditions to Obligation of the Company...........................48

ARTICLE 7

  TERMINATION................................................................48
  7.1      Termination Rights................................................48
  7.2      Effect of Termination.............................................49
  7.3      Fees and Expenses.................................................50

ARTICLE 8

  MISCELLANEOUS..............................................................50
  8.1      Nonsurvival of Representations and Warranties. ...................50
  8.2      Amendment. .......................................................50
  8.3      Notices...........................................................50
  8.4      Counterparts. ....................................................51
  8.5      Severability......................................................52
  8.6      Entire Agreement; No Third Party Beneficiaries....................52
  8.7      Applicable Law. ..................................................52
  8.8      No Remedy in Certain Circumstances. ..............................52
  8.9      Assignment........................................................52
  8.10     Waivers...........................................................52
  8.11     Confidentiality Agreement.........................................53
  8.12     No Recourse Against Others........................................53
  8.13     Incorporation.....................................................53
  8.14     Specific Performance..............................................53
  8.15     Section 1090.3....................................................53

                                      -iii-
<PAGE>

EXHIBIT A -- Form of Stock Voting Agreement
EXHIBIT B-1 -- Form of Separation Agreement for Robert C. Simpson
EXHIBIT B-2 -- Form of Separation  Agreement for Chris K. Corcoran
EXHIBIT C -- Form of Rights Agreement  Amendment
EXHIBIT D  --  Supplemental   Summary  Pages  of  Company Engineering Report*
EXHIBIT E -- Company Hedging Program*


SCHEDULES
         Parent Disclosure Schedule*
         Company Disclosure Schedule*

* Omitted.  The Registrant  agrees to furnish  supplementally a copy of any such
omitted schedules or exhibits to the Securities and Exchange Commission upon its
request.

                                      -iv-

<PAGE>


                          AGREEMENT AND PLAN OF MERGER

         This  Agreement  and  Plan of  Merger  (this  "Agreement")  is made and
entered into as of the 3rd day of October, 2000, by and among Cortez Oil & Gas,
Inc., a Delaware corporation ("Parent"); Cortez Acquisition Company, an Oklahoma
corporation  ("Merger  Sub");  and  Home-Stake  Oil & Gas  Company,  an Oklahoma
corporation (the "Company").


                                    RECITALS

     A. Parent and the Company  desire to effect a merger of Merger Sub with and
into the Company (the "Merger").

     B. The board of directors of the Company has determined it advisable and in
the best interests of the Company's  shareholders to consummate the Merger, upon
the terms and subject to the conditions set forth herein.

     C. The boards of  directors  of Parent and  Merger Sub have  determined  it
advisable and in the best  interests of Parent's and Merger Sub's  shareholders,
respectively,  to  consummate  the  Merger,  upon the terms and  subject  to the
conditions set forth herein.

     D. As a condition  and an inducement to Parent and Merger Sub entering into
this Agreement and incurring the obligations set forth herein, concurrently with
the execution and delivery of this Agreement,  certain officers and directors of
the  Company,  who own an aggregate of  approximately  21.1% of the  outstanding
shares of  Company  Common  Stock,  are  entering  into  separate  Stock  Voting
Agreements (the "Stock Voting Agreements") with Parent in the form of Exhibit A.

     E. As a condition  and an inducement to Parent and Merger Sub entering into
this Agreement and incurring the obligations set forth herein, concurrently with
the  execution  and  delivery of this  Agreement,  each of Robert C. Simpson and
Chris  K.  Corcoran  of  the  Company  are  entering  into  separate  Separation
Agreements (the "Separation Agreements") with the Company in the form of Exhibit
B-1 and Exhibit B-2, respectively.

     F. As a condition  and an inducement to Parent and Merger Sub entering into
this Agreement and incurring the obligations set forth herein, concurrently with
the  execution and delivery of this  Agreement,  the Company is entering into an
amendment (the "Rights Agreement  Amendment") to the Rights Agreement,  dated as
of January 3, 2000,  by and between the  Company and UMB Bank,  N.A.,  as rights
agent (the "Rights Agreement"), with Parent in the form of Exhibit C.

     G.  Parent,  Merger  Sub and the  Company  (the  "Parties")  desire to make
certain representations, warranties, covenants and agreements in connection with
the Merger and also to prescribe various conditions to the Merger.

     NOW,  THEREFORE,  for and in  consideration  of the Recitals and the mutual
covenants and agreements set forth in this  Agreement,  the Parties hereby agree
as follows:

                                       1
<PAGE>

                                    ARTICLE 1

                                   DEFINITIONS

     1.1 Defined Terms. As used in this  Agreement,  each of the following terms
has the meaning given in this Section 1.1 or in the Section referred to below:

     "Affiliate"  means,  with  respect to any  Person,  each other  Person that
directly  or  indirectly  (through  one or  more  intermediaries  or  otherwise)
controls,  is controlled  by, or is under common  control with such Person.  The
term "control"  (including the terms  "controlled  by" and "under common control
with")  means the  possession,  directly or  indirectly,  of the actual power to
direct or cause the direction of the  management  policies of a Person,  whether
through the ownership of stock, by contract, credit arrangement or otherwise.

     "Agreement"   means  this  Agreement  and  Plan  of  Merger,   as  amended,
supplemented and/or modified from time to time.

     "Acquisition Proposal" has the meaning specified in Section 5.3(b).

     "CERCLA" means the Comprehensive  Environmental Response,  Compensation and
Liability Act of 1980, as amended,  and any successor federal and state statutes
and any  regulations  promulgated  thereunder,  and  any  foreign  statutes  and
regulations modeled thereon.

     "CERCLIS" means the Comprehensive Environmental Response,  Compensation and
Liability Information System List.

     "Certificate  of Merger"  means the  certificate  of merger,  prepared  and
executed in accordance  with the applicable  provisions of the OGCA,  filed with
the Secretary of State of the State of Oklahoma to effect the Merger.

     "Claim" has the meaning specified in Section 5.11(b).

     "Closing" means the closing of the Merger and the consummation of the other
transactions contemplated by this Agreement.

     "Closing Date" means the date on which the Closing occurs.

     "Code" means the Internal Revenue Code of 1986, as amended.

     "Company" has the meaning set forth in the introductory paragraph hereof.

                                       2

<PAGE>

    "Company Bank Credit  Agreement"  means the Special Loan  Agreement,  dated
November 8, 1999, between the Company, as borrower, and Bank of Oklahoma,  N.A.,
as lender (as amended and supplemented).

     "Company Benefit Program or Agreement" has the meaning specified in Section
3.17(a).

     "Company  Certificate"  means  a  certificate  representing  shares  of the
Company Common Stock.

     "Company Common Stock" means the common stock, par value $.01 per share, of
the Company.

     "Company  Disclosure   Schedule"  means  the  Company  Disclosure  Schedule
attached hereto and any documents listed on such Company Disclosure Schedule and
expressly incorporated therein by reference.

     "Company  Employee  Benefit  Plans" has the  meaning  specified  in Section
3.17(a).

     "Company  Engineering  Report"  means the reserve  report  effective  as of
January 1, 2000, covering the Ownership Interests and prepared by the Company as
set forth  originally in the data books  provided to Parent via Stephens Inc. on
or about May 8, 2000, and as updated in the supplemental  data books provided to
Parent on or about July 14,  2000,  a copy of the most recent  summary  pages of
which is attached hereto as Exhibit D.

     "Company ERISA Affiliate" has the meaning specified in Section 3.17(a).

     "Company Financial Statements" has the meaning specified in Section 3.6.

     "Company Material Agreement(s)" means (a) the Company Bank Credit Agreement
and any other  agreement with respect to  indebtedness  of the Company;  (b) any
agreement or contract,  written or oral,  between the Company and any  Affiliate
thereof;  (c) any hedging  agreement to which the Company is a party or by which
any of  its  assets  is  bound;  (d)  any  agreement,  contract,  commitment  or
understanding,  written or oral, granting any Person  registration,  purchase or
sale rights with  respect to any  security of the  Company;  (e) any  agreement,
contract,  commitment or understanding,  written or oral,  granting any Person a
right of indemnification  and/or contribution by the Company;  (f) any voting or
other  agreement  relating to any security of the Company;  (g) any  employment,
severance,  retention,  termination or consulting  agreement between the Company
and any other Person; (h) any office leases to which the Company is a party; (i)
any  operating  bonds and letters of credit with respect to which the Company is
liable or contingently  liable;  (j) any agreements  with investment  bankers or
financial  advisors  to which the  Company is a party;  (k) any  indemnification
agreements between the Company and its employees, officers or directors; (l) any
insurance  policy,  binder,  or other agreement to which the Company is a party;
(m) any  guaranties  pursuant  to which the  Company  is  obligated;  or (n) any
agreement  that would be required by Item 601 of Regulation S-B to be filed with
the SEC as an exhibit to the Company's Annual Report on Form 10-KSB for the year
ended December 31, 1999.

                                       3

<PAGE>

     "Company  Meeting"  means the  meeting of the  shareholders  of the Company
called for the  purpose of voting on the  Company  Proposal  or any  adjournment
thereof.

     "Company Option" means an option (issued and outstanding  immediately prior
to the  Effective  Time) to  acquire  shares of  Company  Common  Stock  granted
pursuant to the Company's 1997 Incentive Stock Plan, as amended.

     "Company Permits" has the meaning specified in Section 3.11.

     "Company Plan" has the meaning specified in Section 3.17(a).

     "Company  Preferred  Stock" means the preferred  stock, par value $1.00 per
share, of the Company.

     "Company  Proposal"  means the proposal to approve this  Agreement  and the
Merger,  which proposal is to be presented to the shareholders of the Company in
the Proxy Statement.

     "Company  Representative"  means any director,  officer,  employee,  agent,
advisor (including legal, accounting and financial advisors), Affiliate or other
representative of the Company.

     "Company SEC Documents" has the meaning specified in Section 3.6.

     "Company Stock Equivalents" means all rights, warrants,  options (including
the Company  Options),  convertible  securities  or  indebtedness,  exchangeable
securities  or other  instruments,  or other  rights  that are  outstanding  and
exercisable  for or convertible or  exchangeable  into,  directly or indirectly,
shares of Company  Common  Stock at the time of  issuance or upon the passage of
time or occurrence of some future event.

     "Confidentiality  Agreement"  means the letter  agreement  dated  April 27,
2000,  between the Company and Parent  relating to the  Company's  furnishing of
information to Parent in connection with Parent's  evaluation of the possibility
of the Merger.

     "Debt Commitments" has the meaning specified in Section 4.6.

     "Defensible  Title"  means  such  right,  title  and  interest  that is (a)
evidenced by an instrument or instruments filed of record in accordance with the
conveyance  and  recording  laws of the  applicable  jurisdiction  to the extent
necessary to prevail against  competing claims of bona fide purchasers for value
without notice, and (b) subject to Permitted Encumbrances, free and clear of all
Liens, claims, infringements, burdens and other defects.

     "Disclosure Schedule" means, as applicable, the Company Disclosure Schedule
or the Parent Disclosure Schedule.

     "Dissenting  Shareholder"  means a holder of Company  Common  Stock who has
validly perfected appraisal rights under Section 1091 of the OGCA.

                                       4

<PAGE>

     "Effective Time" has the meaning specified in Section 2.7.

     "Environmental  Law" means any federal,  state,  local or foreign  statute,
code, ordinance, rule, regulation, policy, guideline, permit, consent, approval,
license,  judgment,  order,  writ,  decree,  common  law,  injunction  or  other
authorization  in  effect  on the date  hereof,  at the  Closing  Date,  or at a
previous  time  applicable  to the  operations  of the Company:  (a) relating to
emissions,  discharges,  releases or threatened  releases of Hazardous Materials
into the natural environment,  including into ambient air, soil, sediments, land
surface or  subsurface,  buildings or facilities,  surface  water,  groundwater,
publicly-owned  treatment  works,  septic  systems or land;  (b) relating to the
generation,   treatment,   storage,  disposal,  use,  handling,   manufacturing,
recycling,  transportation or shipment of Hazardous  Materials;  (c) relating to
occupational  health and safety;  or (d) otherwise  relating to the pollution of
the  environment,  solid waste  handling  treatment  or  disposal,  operation or
reclamation  of oil and gas  operations  or mines,  reclamation  or  remediation
activities, or protection of environmentally sensitive areas.

     "Equity Commitments" has the meaning specified in Section 4.6.

     "ERISA"  means the Employee  Retirement  Income  Security  Act of 1974,  as
amended.

     "Exchange Act" means the Securities Exchange Act of 1934, as amended.

     "Exchange Agent" has the meaning specified in Section 2.5(a).

     "Exchange Fund" has the meaning specified in Section 2.5(a).

     "Financing" has the meaning specified in Section 4.6.

     "Financing Commitments" has the meaning specified in Section 4.6.

     "Financing Termination Notice" has the meaning specified in Section 5.17.

     "GAAP" means generally accepted accounting principles, as recognized by the
U.S.  Financial   Accounting   Standards  Board  (or  any  generally  recognized
successor).

     "Governmental  Action"  means  any  authorization,  application,  approval,
consent,  exemption,  filing,  license,  notice,  registration,  permit or other
requirement of, to or with any Governmental Authority.

     "Governmental  Authority"  means any national,  state,  county or municipal
government,  domestic or foreign, any agency, board, bureau, commission,  court,
department or other instrumentality of any such government, or any arbitrator in
any case that has  jurisdiction  over the Company or the Parent Companies or any
of their respective properties or assets.

     "Hazardous  Material" means:  (a) any "hazardous  substance," as defined by
CERCLA; (b) any "hazardous waste" or "solid waste," in either case as defined by
the  Resource  Conservation  and  Recovery  Act, as amended,  and any  successor
federal and state statutes and any regulations promulgated  thereunder,  and any

                                       5
<PAGE>


foreign  statutes and regulations  modeled  thereon;  (c) any solid,  hazardous,
dangerous or toxic chemical, material, waste or substance, within the meaning of
and regulated by any Environmental Law; (d) any radioactive material,  including
any  naturally  occurring  radioactive  material,  and any  source,  special  or
byproduct  material as defined in 42 U.S.C.  2011 et seq. and any  amendments or
authorizations  thereof;  (e) any  asbestos-containing  materials in any form or
condition;  (f) any polychlorinated  biphenyls in any form or condition;  or (g)
petroleum, petroleum hydrocarbons or any fraction or byproducts thereof.

     "Hydrocarbons" means oil, condensate,  gas, casinghead gas and other liquid
or gaseous hydrocarbons.

     "Hydrocarbon  Agreement" means any of the Hydrocarbon  Sales Agreements and
Hydrocarbon Purchase Agreements.

     "Hydrocarbon  Purchase  Agreement"  means  any  material  sales  agreement,
purchase contract,  or marketing agreement that is currently in effect and under
which the Company is a buyer of  Hydrocarbons  for resale  (other than  purchase
agreements  entered into in the ordinary course of business with a term of three
months or less,  terminable  without  penalty on 30 days' notice or less,  which
provide for a price not greater  than the market  value price that would be paid
pursuant  to an  arm's-length  contract  for the same term with an  unaffiliated
third-party  seller,  and  which  do not  obligate  the  purchaser  to take  any
specified  quantity of Hydrocarbons or to pay for any deficiencies in quantities
of Hydrocarbons not taken).

     "Hydrocarbon Sales Agreement" means any material sales agreement,  purchase
contract, or marketing agreement that is currently in effect and under which the
Company is a seller of Hydrocarbons  (other than "spot" sales agreements entered
into in the  ordinary  course of business  with a term of three  months or less,
terminable  without  penalty on 30 days' notice or less, and which provide for a
price not less than the market value price that would be received pursuant to an
arm's-length  contract  for the  same  term  with an  unaffiliated  third  party
purchaser).

     "Indemnified Parties" has the meaning specified in Section 5.11(b).

     "Lien"  means any  lien,  mortgage,  security  interest,  pledge,  deposit,
production payment, restriction,  burden, encumbrance, right of purchase, rights
of a vendor under any title retention or conditional sale agreement, or lease or
other arrangement substantially equivalent thereto.

     "Material Adverse Effect" means: (a) when used with respect to the Company,
a result or  consequence  that (i) would  reasonably  be expected to  materially
adversely affect the condition (financial or otherwise),  prospects,  results of
operations or business of the Company or the aggregate value of its assets, (ii)
would reasonably be expected to materially  impair the ability of the Company to
own, hold, develop and operate its assets, or (iii) would reasonably be expected
to impair  the  Company's  ability  to  perform  its  obligations  hereunder  or
consummate the transactions  contemplated hereby; and (b) when used with respect
to Parent,  a result or  consequence  that (i) would  reasonably  be expected to
materially adversely affect the condition  (financial or otherwise),  prospects,
results of operations or business of the Parent  Companies (taken as a whole) or
the  aggregate  value of their  assets,  (ii) would  reasonably  be  expected to
materially impair the ability of the Parent Companies (taken as a whole) to own,

                                       6

<PAGE>


hold, develop and operate their assets, or (iii) would reasonably be expected to
impair  Parent's or Merger Sub's ability to perform its  respective  obligations
hereunder or consummate the transactions contemplated hereby; provided, however,
that if the  Company's  representations  contained  in Section 3.27 are true and
correct in all  respects,  then  "Material  Adverse  Effect"  shall not  include
results or consequences  from changes or trends,  including changes or trends in
commodity prices, generally prevalent in or affecting the oil and gas industry.

     "Material   Representations"   means  the  representations  and  warranties
contained in Sections 3.8 (the last  sentence  therein),  3.17(g),  3.27,  3.30,
3.33, 3.37 and 3.38 of this Agreement.

     "Merger" has the meaning specified in the Recitals to this Agreement.

     "Merger  Consideration" means the per share cash consideration to be issued
in connection with the Merger.

     "Merger  Sub" has the meaning  specified in the  introductory  paragraph of
this Agreement.

     "Merger Sub Common Stock" means the common stock, par value $.01 per share,
of Merger Sub.

     "NASDAQ" means the Nasdaq Small Cap Market.

     "OGCA" means the Oklahoma General Corporation Act, as amended.

     "Oil and Gas Interest(s)"  means: (a) direct and indirect  interests in and
rights with respect to oil, gas,  mineral and related  properties  and assets of
any kind and nature, direct or indirect, including, without limitation, working,
royalty  and  overriding   royalty  interests,   mineral  interests,   leasehold
interests,  production payments,  operating rights, net profits interests, other
non-working interests and non-operating  interests;  (b) interests in and rights
with  respect to  Hydrocarbons  and other  minerals  or revenues  therefrom  and
contracts in connection  therewith and claims and rights thereto  (including oil
and gas leases,  operating  agreements,  unitization and pooling  agreements and
orders,  division orders, transfer orders, mineral deeds, royalty deeds, oil and
gas sales,  exchange and processing  contracts and agreements and, in each case,
interests thereunder), surface interests, fee interests, reversionary interests,
reservations and concessions;  (c) easements,  rights of way, licenses, permits,
leases,  and other interests  associated with,  appurtenant to, or necessary for
the  operation of any of the  foregoing;  and (d)  interests  in  equipment  and
machinery  (including  well equipment and  machinery),  oil and gas  production,
gathering,   transmission,   compression,   treating,   processing  and  storage
facilities  (including tanks, tank batteries,  pipelines and gathering systems),
pumps,  water  plants,  electric  plants,  gasoline and gas  processing  plants,
refineries and other tangible  personal  property and fixtures  associated with,
appurtenant to, or necessary for the operation of any of the foregoing.

     "Option Surrender Agreement" has the meaning specified in Section 2.5(f).

     "Ownership  Interests" means the ownership  interests of the Company in the
Oil and Gas  Interests of the Company,  as set forth in the Company  Engineering
Report.

                                       7

<PAGE>

     "Parent" has the meaning  specified in the  introductory  paragraph of this
Agreement.

     "Parent Affiliate" has the meaning specified in Section 8.12.

     "Parent Companies" means Parent and Merger Sub.

     "Parent Disclosure  Schedule" means the Parent Disclosure Schedule attached
hereto and any documents listed on such Parent Disclosure Schedule and expressly
incorporated therein by reference.

     "Parent  Representative"  means any  director,  officer,  employee,  agent,
advisor (including legal, accounting and financial advisors), Affiliate or other
representative of any of the Parent Companies and any potential provider of debt
or equity financing to any of the Parent Companies.

     "Parties" has the meaning specified in the Recitals to this Agreement.

     "Permitted  Encumbrances" means: (a) Liens for Taxes,  assessments or other
governmental  charges or levies if the same shall not at the particular  time in
question be due and  delinquent  or (if  foreclosure,  distraint,  sale or other
similar  proceedings shall not have been commenced or, if commenced,  shall have
been stayed) are being contested in good faith by appropriate proceedings and if
the Company shall have set aside on its books such reserves  (segregated  to the
extent  required  by  sound  accounting  practices)  as  may be  required  by or
consistent with GAAP and,  whether  reserves are set aside or not, are listed on
the  applicable  Disclosure  Schedule;  (b)  Liens  of  carriers,  warehousemen,
mechanics,  laborers,  materialmen,  landlords,  vendors,  workmen and operators
arising by operation  of law in the ordinary  course of business or by a written
agreement  existing  as of the date  hereof and  necessary  or  incident  to the
exploration,  development,  operation and maintenance of Hydrocarbon  properties
and related  facilities  and assets for sums not yet due or being  contested  in
good faith by  appropriate  proceedings,  if the Company shall have set aside on
its books such reserves  (segregated to the extent required by sound  accounting
practices) as may be required by or consistent with GAAP and,  whether  reserves
are set aside or not, are listed on the applicable  Disclosure Schedule,  to the
extent that such are in existence as of the date hereof;  (c) Liens  incurred in
the  ordinary  course of  business in  connection  with  workers'  compensation,
unemployment  insurance and other social security legislation (other than ERISA)
which  would not and will not,  individually  or in the  aggregate,  result in a
Material  Adverse  Effect on the  Company;  (d) Liens  incurred in the  ordinary
course of business to secure the performance of bids, tenders,  trade contracts,
leases,  statutory  obligations,   surety  and  appeal  bonds,  performance  and
repayment bonds and other  obligations of a like nature which would not and will
not,  individually or in the aggregate,  result in a Material  Adverse Effect on
the Company;  (e) Liens,  easements,  rights-of-way,  restrictions,  servitudes,
permits,  conditions,  covenants,  exceptions,  reservations  and other  similar
encumbrances incurred in the ordinary course of business or existing on property
and not  materially  impairing  the  value  of the  assets  of the  Company,  or
interfering with the ordinary conduct of the business of the Company,  or rights
to any of its assets;  (f) Liens arising  pursuant to Section 9.319 of the Texas
Business and Commerce  Code and all other  similar  Liens  created or arising by
operation of law to secure a party's  obligations as a purchaser of oil and gas,
(g) all rights to consent  by,  required  notices  to,  filings  with,  or other
actions  by  Governmental   Authorities  to  the  extent  customarily   obtained

                                       8

<PAGE>

subsequent to closing; (h) farm-out,  carried working interest, joint operating,
unitization,  royalty, overriding royalty, sales and similar agreements relating
to the exploration or development of, or production from, Hydrocarbon properties
entered into in the ordinary  course of business and not in violation of Section
5.1,  provided the effect  thereof of any of such  agreements in existence as of
the date hereof on the working and net revenue interest of the Company, has been
properly reflected in its Ownership Interests;  (i) any defects,  irregularities
or  deficiencies  in title to  easements,  rights-of-way  or other  surface  use
agreements that do not materially adversely affect the value of any asset of the
Company by an amount in excess of $100,000;  (j) Liens  arising under or created
pursuant  to the Company  Bank  Credit  Agreement;  and (k) Liens  described  in
Section 3.16(c) of the Company Disclosure Schedule.

     "Person" means any natural person, corporation, company, limited or general
partnership, joint stock company, joint venture, association,  limited liability
company,  trust, bank, trust company, land trust, business trust or other entity
or organization, whether or not a Governmental Authority.

     "Proxy  Statement"  means a proxy  statement in definitive form relating to
the Company Meeting and the Company Proposal.

     "Reserve Data Value" means the 10% discounted present value (before tax) of
the proved reserves contained in the Company's Oil and Gas Interests as shown on
the Company Engineering Report.

     "Responsible   Officer"  means,  with  respect  to  any  corporation,   the
President,  the Chief Executive Officer,  the Chief Operating Officer, the Chief
Financial Officer, or any Vice President or other member of executive management
of such corporation.

     "Rights  Agreement"  has the  meaning  specified  in the  Recitals  to this
Agreement.

     "Rights  Agreement  Amendment" has the meaning specified in the Recitals to
this Agreement.

     "Seal Agreement" has the meaning specified in Section 5.19.

     "SEC" means the Securities and Exchange Commission.

     "Securities Act" means the Securities Act of 1933, as amended.

     "Separation  Agreements" has the meaning  specified in the Recitals to this
Agreement.

     "Stock Action" has the meaning specified in Section 2.4(b)(ii).

     "Stock Voting Agreements" has the meaning specified in the Recitals to this
Agreement.

     "Strother Agreements" has the meaning specified in Section 5.20.

                                       9

<PAGE>



     "Subsidiary"  means,  with respect to any Person,  any corporation or other
organization,  whether incorporated or unincorporated,  of which (a) such Person
or any other  Subsidiary  of such Person is a general  partner or (b) at least a
majority of the  securities or other  interests  having by their terms  ordinary
voting power to elect a majority of the board of directors or others  performing
similar  functions with respect to such  corporation or other  organization  is,
directly or indirectly, owned or controlled by such Person or by any one or more
of its Subsidiaries, or by such Person and any one or more of its Subsidiaries.

     "Surviving Corporation" has the meaning specified in Section 2.2.

     "Tax Returns" means any return,  declaration,  report, claim for refund, or
information  return or statement  relating to Taxes,  including  any schedule or
attachment thereto, and including any amendment thereof.

     "Taxes" means taxes of any kind, levies or other like assessments, customs,
duties, imposts,  charges or fees, including income, gross receipts, ad valorem,
value added,  excise,  real or personal  property,  asset,  sales,  use, federal
royalty, license, payroll, transaction,  capital, net worth and franchise taxes,
estimated   taxes,   withholding,    employment,   social   security,   workers'
compensation,   utility,  severance,   production,   unemployment  compensation,
occupation,  premium,  windfall  profits,  transfer  and  gains  taxes and other
governmental  taxes imposed or payable to the United States or any state,  local
or foreign governmental subdivision or agency thereof, and in each instance such
term shall include any interest,  penalties or additions to tax  attributable to
any such tax,  including  penalties  for the  failure  to file any Tax Return or
report.

     "Third-Party  Consent"  means the consent or  approval of any Person  other
than any Governmental Authority.

     "Transaction Documents" has the meaning specified in Section 3.3.

     1.2  References  and Titles.  All references in this Agreement to Exhibits,
Schedules,  Articles, Sections,  subsections and other subdivisions refer to the
corresponding Exhibits,  Schedules,  Articles,  Sections,  subsections and other
subdivisions of or to this Agreement unless expressly provided otherwise. Titles
appearing  at the  beginning of any  Articles,  Sections,  subsections  or other
subdivisions of this Agreement are for  convenience  only, do not constitute any
part of this  Agreement,  and shall be  disregarded  in construing  the language
hereof.  The  words  "this  Agreement,"   "herein,"  "hereby,"  "hereunder"  and
"hereof," and words of similar  import,  refer to this  Agreement as a whole and
not to any particular  subdivision unless expressly so limited.  The words "this
Article,"  "this Section" and "this  subsection,"  and words of similar  import,
refer  only to the  Article,  Section or  subsection  hereof in which such words
occur. The word "or" is not exclusive,  and the word "including" (in its various
forms) means including without  limitation.  Pronouns in masculine,  feminine or
neuter  genders  shall be construed to state and include any other  gender,  and
words,  terms and titles  (including  terms defined herein) in the singular form
shall be  construed  to include  the plural and vice  versa,  unless the context
otherwise requires.

     As used in the representations and warranties  contained in this Agreement,
the  phrase  "to the  knowledge"  of the  representing  Party  shall  mean  that

                                       10
<PAGE>



Responsible  Officers of such Party,  individually or  collectively,  either (a)
know that the matter being represented and warranted is true and accurate or (b)
have no reason,  after  reasonable  inquiry,  to believe  that the matter  being
represented and warranted is not true and accurate.


                                    ARTICLE 2

                                   THE MERGER

     2.1 The  Merger.  Subject  to the  terms and  conditions  set forth in this
Agreement,  at the Effective Time,  Merger Sub shall be merged with and into the
Company in accordance with the provisions of this Agreement.

     2.2  Effect  of the  Merger.  Upon the  effectiveness  of the  Merger,  the
separate existence of Merger Sub shall cease, and the Company,  as the surviving
corporation  in the Merger (the  "Surviving  Corporation"),  shall  continue its
corporate  existence  under the laws of the State of Oklahoma.  The Merger shall
have the effects specified in this Agreement and the OGCA.

     2.3  Governing  Instruments,   Directors  and  Officers  of  the  Surviving
Corporation.

          (a) The  certificate  of  incorporation  of the Company,  as in effect
     immediately  prior  to the  Effective  Time,  shall be the  certificate  of
     incorporation of the Surviving Corporation until duly amended in accordance
     with its terms and applicable law.

          (b) The bylaws of the Company,  as in effect  immediately prior to the
     Effective Time, shall be the bylaws of the Surviving Corporation until duly
     amended in accordance with their terms and applicable law.

          (c) The  directors  and officers of Merger Sub at the  Effective  Time
     shall  be the  directors  and  officers,  respectively,  of  the  Surviving
     Corporation from the Effective Time until their respective  successors have
     been duly  elected or  appointed  in  accordance  with the  certificate  of
     incorporation and bylaws of the Surviving Corporation and applicable law.

     2.4 Effect on Securities.

          (a) Merger Sub Common Stock.  At the Effective  Time, by virtue of the
     Merger and without any action on the part of the holder thereof, each share
     of Merger Sub Common Stock issued and outstanding  immediately prior to the
     Effective  Time shall remain issued and  outstanding  and shall continue as
     one share of common stock of the Surviving Corporation and each certificate
     evidencing  ownership  of  any  such  shares  shall  continue  to  evidence
     ownership  of the  same  number  of  shares  of the  capital  stock  of the
     Surviving Corporation.

          (b) Company Securities.

               (i) Company Common Stock. At the Effective Time, by virtue of the
          Merger and without any action on the part of any holder thereof,  each

                                       11
<PAGE>


          share of the  Company  Common  Stock  that is issued  and  outstanding
          immediately  prior to the Effective Time (other than shares of Company
          Common  Stock  held by  Dissenting  Shareholders,  by the  Company  as
          treasury  shares or by Parent or Merger Sub) shall be  converted  into
          the right to  receive  $11.00 per  share.  Each  share of the  Company
          Common Stock, when so converted,  shall  automatically be canceled and
          retired, shall cease to exist and shall no longer be outstanding;  and
          the holder of any  Company  Certificate  representing  any such shares
          shall cease to have any rights with respect thereto,  except the right
          to receive the Merger Consideration to be issued in exchange therefor,
          upon the surrender of such Company Certificate.  All shares of Company
          Common  Stock held by the Company as  treasury  shares or by Parent or
          Merger Sub shall automatically be canceled and retired and shall cease
          to  exist  as of the  Effective  Time  and no  consideration  shall be
          delivered or deliverable in exchange therefor.

               (ii) Recapitalization.  If between the date of this Agreement and
          the  Effective  Time,  the Company  shall split,  combine or otherwise
          reclassify the Company Common Stock,  or pay a stock dividend or other
          stock  distribution in Company Common Stock,  or otherwise  change the
          Company  Common  Stock into other  securities,  or make any other such
          stock  dividend  or  distribution  in capital  stock of the Company in
          respect of the Company Common Stock  (collectively a "Stock  Action"),
          the per share Merger  Consideration shall be correspondingly  adjusted
          to reflect such Stock Action.

               (iii) Company Stock  Options.  Prior to the Effective  Time,  the
          Company  shall take such  action as may be  necessary  for all Company
          Options  to be  exercisable  in full as of  immediately  prior  to the
          Effective Time. At the Effective Time, Parent will cause the Surviving
          Corporation to acquire each outstanding Company Option pursuant to the
          provisions of Section 10 of the Company's 1997  Incentive  Stock Plan,
          as amended, such that, at the Effective Time, all Company Options held
          by each  particular  holder shall be canceled and such holder shall be
          entitled to receive from the Surviving Corporation, in respect of each
          share of Company Common Stock otherwise issuable upon exercise of each
          Company Option, cash (subject to all applicable  withholding taxes) in
          an  amount  equal  to the  difference  of (i)  the  per  share  Merger
          Consideration,  and (ii) the per share  exercise price of such Company
          Option.  From and after the Effective  Time, each Company Option shall
          only represent the right to receive the cash payment  provided in this
          Section 2.4(b)(iii).

               (iv)   Shares  of   Dissenting   Shareholders.   Any  issued  and
          outstanding  shares  of  Company  Common  Stock  held by a  Dissenting
          Shareholder  shall  be  converted  into  the  right  to  receive  such
          consideration  as may be  determined  to be  due  to  such  Dissenting
          Shareholder pursuant to the OGCA; provided, however, shares of Company
          Common  Stock  outstanding  at  the  Effective  Time  and  held  by  a
          Dissenting  Shareholder who shall, after the Effective Time,  withdraw
          his, her or its demand for  appraisal or lose his, her or its right of
          appraisal as provided in the OGCA, shall be deemed to be converted, as
          of  the  Effective   Time,  into  the  right  to  receive  the  Merger
          Consideration,  in accordance  with the  procedures  specified in this
          Article 2. Prior to the Effective  Time, the Company shall give Parent
          (A) prompt notice of any written demands for appraisal, withdrawals of
          demands for appraisal and any other instruments served pursuant to the
          OGCA relating to appraisal rights received by the Company, and (B) the
          opportunity to direct all negotiations and proceedings with respect to
          demands for appraisal under the OGCA. Prior to the Effective Time, the

                                       12
<PAGE>


          Company  will not  voluntarily  make any payment  with  respect to any
          demands for  appraisal  and will not,  except  with the prior  written
          consent of Parent, settle or offer to settle any such demands.

               (v) Other. Except as provided in this Section 2.4 or as otherwise
          agreed to by the Parties (A) the provisions of any other plan, program
          or  arrangement  providing  for the  issuance  or grant  of any  other
          interest in respect of the capital  stock of the Company  shall become
          null and void at the Effective Time, and (B) the Company shall use all
          reasonable best efforts to ensure that,  following the Effective Time,
          no holder of Company Stock Equivalents or rights or any participant in
          any plan,  program or arrangement  shall have any right  thereunder to
          acquire any equity  securities of the Company,  Merger Sub,  Parent or
          any direct or indirect subsidiary thereof.

          2.5  Exchange of  Certificates/Option  Agreements/Severance  and Bonus
     Payments.

               (a) Exchange  Agent.  Prior to the Effective  Time,  Parent shall
          designate  a bank  or  trust  company,  reasonably  acceptable  to the
          Company, to act as Exchange Agent hereunder (the "Exchange Agent"). At
          the Effective  Time,  Parent shall deliver,  in trust, to the Exchange
          Agent,  for the benefit of the holders of Company  Common  Stock,  for
          exchange in  accordance  with this  Section  2.5 through the  Exchange
          Agent,  cash in the  aggregate  amount  necessary to promptly make all
          cash payments due under Section 2.4 in exchange for outstanding shares
          of Company  Common  Stock.  The cash  delivered to the Exchange  Agent
          pursuant to this Section 2.5 and comprising  the Merger  Consideration
          shall be hereinafter  referred to as the "Exchange Fund." The Exchange
          Fund shall not be used for any other purpose;  provided,  the Exchange
          Agent shall invest any cash  included in the  Exchange  Fund in one or
          more bank  accounts or in  high-quality,  short-term  investments,  as
          directed by Parent,  on a daily  basis.  Any interest and other income
          resulting from such investments will be paid to Parent.

               (b)  Letters of  Transmittal.  As soon as  practicable  after the
          Effective  Time,  but  in no  event  more  than  three  business  days
          thereafter,  Parent  shall  cause the  Exchange  Agent to mail to each
          holder of record  of  Company  Certificates  (i) a  customary  form of
          letter  of   transmittal,   reasonably   acceptable  to  the  Company,
          specifying that delivery shall be effected, and risk of loss and title
          to the Company  Certificates  shall pass, only upon proper delivery of
          the Company  Certificates to the Exchange Agent, and (ii) instructions
          for use in surrendering such Company  Certificates in exchange for the
          Merger  Consideration.  Upon  surrender of a Company  Certificate  for
          cancellation  to the  Exchange  Agent,  together  with such  letter of
          transmittal,  duly  executed,  the holder of such Company  Certificate
          shall be entitled to promptly receive in exchange  therefor payment by
          check of an amount  equal to the  product of the Merger  Consideration
          multiplied  by the number of shares of Company  Common Stock  formerly
          represented  by the  surrendered  Company  Certificate,  after  giving
          effect to any required tax withholding, and the Company Certificate so
          surrendered   shall  forthwith  be  canceled.   Until  surrendered  as
          contemplated by this Section 2.5(b), each Company Certificate shall be
          deemed from and after the Effective  Time to represent  only the right
          to receive upon such surrender the Merger  Consideration.  In no event
          shall  the  holder  of any such  surrendered  Company  Certificate  be
          entitled to receive interest on any cash to be received in the Merger.

               (c) Lost Certificate.  If any Company Certificate shall have been
          lost,  stolen or  destroyed,  upon the making of an  affidavit of that
          fact by the  person  claiming  such  Company  Certificate  to be lost,

                                       13
<PAGE>


          stolen or  destroyed  and, if required by Parent,  the posting by such
          person of a bond, in such  reasonable  and customary  amount as Parent
          may direct, as indemnity against any claim that may be made against it
          with respect to such  Company  Certificate,  the  Exchange  Agent will
          promptly issue in exchange for such lost,  stolen or destroyed Company
          Certificate the Merger Consideration.

               (d) No  Transfer.  After the  Effective  Time,  there shall be no
          further registration of transfers on the Surviving Corporation's stock
          transfer  books of the shares of the  Company  Common  Stock that were
          outstanding immediately prior to the Effective Time.

               (e)  Termination  of Exchange  Fund.  Any portion of the Exchange
          Fund held by the Exchange  Agent in accordance  with the terms of this
          Section 2.5 that remains  unclaimed by the former  shareholders of the
          Company for a period of one year following the Effective Time shall be
          delivered to Parent, upon demand.  Thereafter, any former shareholders
          of the Company who have not  theretofore  complied with the provisions
          of this  Section  2.5 shall look only to Parent  for  payment of their
          claim for Merger Consideration (all without interest).

               (f) Option Surrender Agreements. Within 20 days after the date of
          this  Agreement,  the Company  shall  distribute  an option  surrender
          agreement (an "Option Surrender Agreement"),  in the form delivered to
          the Company immediately prior to execution of this Agreement,  to each
          holder of a Company  Option.  After the Effective  Time,  Parent shall
          cause the Surviving  Corporation to pay the amount of cash due to each
          holder  of a  Company  Option  under  Section  2.4(b)(iii),  with such
          payment  being  made  (i) on the  Closing  Date as to each  particular
          holder of Company Options who has delivered to the Company an executed
          Option  Surrender  Agreement at least five  business days prior to the
          Closing  Date or (ii) if clause  (i) above is not  applicable,  within
          three  business  days  after the date that each  particular  holder of
          Company  Options  has  delivered  to the  Company an  executed  Option
          Surrender Agreement.

               (g) Severance and Bonus Payments.  At the Effective Time,  Parent
          shall  pay  (subject  to  all  applicable  withholding  taxes  and  in
          accordance with and to the extent then due and payable under the terms
          of the Separation  Agreements  and the Company's  Amended and Restated
          Change in Control  Severance Pay Plan, as such may be applicable)  all
          severance, bonus and other amounts set forth in Section 3.17(g) of the
          Company Disclosure Schedule.

               (h) No Liability. None of Parent, the Surviving Corporation,  the
          Exchange  Agent,  or any other  Person  shall be liable to any  former
          holder of shares of Company  Common  Stock or Company  Options for any
          amount  properly  delivered  to any public  official  pursuant  to any
          applicable  abandoned  property,  escheat, or similar law. Any amounts
          remaining  unclaimed  by former  holders of shares of  Company  Common
          Stock or Company  Options after a period of three years  following the
          Effective Time (or such earlier date immediately  prior to the time at
          which such amounts would  otherwise  escheat to or become  property of
          any governmental  entity) shall, to the extent permitted by applicable
          law,  become the  property  of Parent  free and clear of any claims or
          interest of any such holders or their successors, assigns, or personal
          representative previously entitled thereto.

                                       14

<PAGE>

          2.6 Closing.  Subject to the terms and  conditions of this  Agreement,
     the Closing shall take place at the offices of Vinson & Elkins L.L.P., 2001
     Ross Avenue, Suite 3700, Dallas, Texas 75201, at 10:00 a.m., local time, on
     the first  business  day after the  conditions  set forth in Article 6 have
     been  satisfied  or waived or on such other date and at such other time and
     place as Parent and the Company shall agree;  provided,  however,  that the
     Closing  shall occur no earlier than  December 1, 2000;  provided  further,
     however,  that if the Company breaches its  representation  in Section 3.27
     hereof,  then the Closing  shall occur on the first  business day after the
     conditions set forth in Article 6 have been satisfied or waived.

          2.7 Effective  Time of the Merger.  The Merger shall become  effective
     immediately  when the  Certificate  of Merger is accepted for filing by the
     Secretary of State of the State of Oklahoma or at such time  thereafter  as
     is  provided  in the  Certificate  of Merger (the  "Effective  Time").  The
     Certificate  of Merger shall be filed,  and the Effective Time shall occur,
     on the Closing Date; provided,  however, that the Certificate of Merger may
     be filed  prior to the  Closing  Date or prior to the Closing so long as it
     provides for an Effective Time that occurs on the Closing Date  immediately
     after the Closing.

          2.8 Taking of Necessary Action; Further Action. Each of Parent, Merger
     Sub,  and the  Company  shall use all  reasonable  efforts to take all such
     actions as may be  necessary  or  appropriate  in order to  effectuate  the
     Merger under the OGCA as promptly as commercially  practicable.  If, at any
     time after the Effective Time, any further action is necessary or desirable
     to carry  out the  purposes  of this  Agreement  and to vest the  Surviving
     Corporation with full right, title and possession to all assets,  property,
     rights,  privileges,  powers  and  franchises  of both  Merger  Sub and the
     Company, the officers and directors of the Surviving  Corporation are fully
     authorized,  in the name of the Surviving Corporation or otherwise to take,
     and shall take, all such lawful and necessary action.


                                    ARTICLE 3

                  REPRESENTATIONS AND WARRANTIES OF THE COMPANY

     The  Company  hereby  represents  and  warrants to Parent and Merger Sub as
follows  (such  representations  and  warranties  being  deemed  to be made on a
continuous basis until the Effective Time):

     3.1 Organization. The Company: (a) is a corporation duly organized, validly
existing and in good standing  under the laws of its state of  incorporation  or
formation;  (b) has the requisite  power and authority to own, lease and operate
its properties and to conduct its business as it is presently  being  conducted;
and (c) is duly qualified to do business as a foreign corporation and is in good
standing,  in each  jurisdiction  where the character of the properties owned or
leased by it or the nature of its activities makes such qualification  necessary
(except where any failure to be so qualified as a foreign  corporation  or to be
in good standing would not,  individually  or in the aggregate,  have a Material
Adverse Effect on the Company).  Accurate and complete copies of the certificate
or articles of incorporation,  bylaws,  minute books and/or other organizational
documents  of the Company  have  heretofore  been  delivered,  or in the case of
minute books, been made available, to Parent. The Company has no Subsidiaries.

                                       15

<PAGE>

   3.2 Other Equity Interests. The Company does not own any equity interest in
any general or limited  partnership,  corporation,  limited liability company or
other  entity  other than as set forth in Section 3.2 of the Company  Disclosure
Schedule   (other  than  joint  venture,   joint   operating,   other  ownership
arrangements  and tax  partnerships  entered  into  in the  ordinary  course  of
business  that,  individually  or in the  aggregate,  are  not  material  to the
operations or business of the Company). The Company has terminated and dissolved
H-S Royalty, Ltd., of which it served as general partner, in accordance with the
terms of the partnership agreement of H-S Royalty, Ltd. and applicable law.

     3.3 Authority and  Enforceability.  The Company has the requisite corporate
power and  authority  to enter into and  deliver  this  Agreement  and the other
agreements  and documents  entered into by the Company in  connection  with this
Agreement,  including  without  limitation  the  Stock  Voting  Agreements,  the
Separation Agreements and the Rights Agreement Amendment (collectively with this
Agreement, the "Transaction Documents") and (with respect to consummation of the
transactions included in the Company Proposal,  subject to the valid approval of
the Company  Proposal by the  shareholders  of the  Company) to  consummate  the
transactions  contemplated hereby and thereby. The execution and delivery of the
Transaction  Documents and (with  respect to  consummation  of the  transactions
included in the Company  Proposal,  subject to the valid approval of the Company
Proposal  by  the   shareholders  of  the  Company)  the   consummation  of  the
transactions  contemplated  hereby  and  thereby  have  been  duly  and  validly
authorized  by all  necessary  corporate  action  on the  part  of the  Company,
including  approval  by the  board of  directors  of the  Company,  and no other
corporate  proceedings on the part of the Company are necessary to authorize the
execution  or  delivery  of  the  Transaction  Documents  or  (with  respect  to
consummation of the transactions  included in the Company  Proposal,  subject to
the valid approval of the Company  Proposal by the  shareholders  of Company) to
consummate the  transactions  contemplated  hereby and thereby.  The Transaction
Documents  have been duly and validly  executed and delivered by the Company and
(with  respect to  consummation  of the  transactions  included  in the  Company
Proposal,  subject  to  the  valid  approval  of  the  Company  Proposal  by the
shareholders of Company, and assuming that the Transaction  Documents constitute
valid and binding obligations of Parent,  Merger Sub and the other Persons party
to the  Transaction  Documents  (other than the Company))  constitute  valid and
binding  obligations of the Company,  enforceable  against it in accordance with
their terms.

     3.4 No Violations.  The execution and delivery of each Transaction Document
does not,  and the  consummation  of the  transactions  contemplated  hereby and
thereby and compliance by the Company with the provisions hereof or thereof will
not,  conflict  with,  result in any  violation  of or default  (with or without
notice or lapse of time or both)  under,  give  rise to a right of  termination,
cancellation  or  acceleration  of any  obligation  or to the loss of a material
benefit under, or result in the creation of any Lien on any of the properties or
assets  of  the  Company  under,  any  provision  of:  (a)  the  certificate  of
incorporation,  bylaws or any other organizational documents of the Company; (b)
any Company Material  Agreement  including any loan or credit  agreement,  note,
bond, mortgage,  indenture,  lease, permit,  concession,  franchise,  license or
other  agreement or instrument  applicable  to the Company;  or (c) assuming the
consents, approvals, authorizations, permits, filings and notifications referred
to in Section 3.5 are duly and timely  obtained or made,  any  judgment,  order,
decree, statute, law, ordinance, rule or regulation applicable to the Company or
any of its  properties  or assets,  other than, in the case of clause (b) or (c)
above,  any  such  conflict,  violation,  default,  right,  loss or  Lien  that,
individually  or in the aggregate,  would not have a Material  Adverse Effect on

                                       16
<PAGE>


the Company.  Neither the provisions of Article Eleven of the Company's Restated
and Amended  Certificate of Incorporation  nor Sections 1145 through 1155 of the
OGCA  are  applicable  to  the  transactions  contemplated  by  the  Transaction
Documents.

     3.5 Consents and Approvals.  No consent,  approval,  order or authorization
of,  registration,  declaration or filing with, or permit from, any Governmental
Authority is required by or with respect to the Company in  connection  with the
execution  and  delivery  of the  Transaction  Documents  by the  Company or the
consummation by the Company of the transactions contemplated hereby and thereby,
except for the following: (a) any such consent, approval, order,  authorization,
registration,  declaration, filing or permit which the failure to obtain or make
would not,  individually or in the aggregate,  have a Material Adverse Effect on
the Company;  (b) the filing of the  Certificate of Merger with the Secretary of
State of the State of Oklahoma  pursuant to the  provisions of the OGCA; (c) the
filing with the SEC of the Proxy Statement (in preliminary and definitive  form)
and such  reports  under  Section  13(a)  of the  Exchange  Act and  such  other
compliance  with the  Exchange  Act and the  Securities  Act and the  rules  and
regulations  of the SEC  thereunder  as may be required in  connection  with the
Transaction  Documents and the transactions  contemplated hereby and thereby and
the  obtaining  from  the SEC of such  orders  as may be so  required;  (d) such
filings as may be required by NASDAQ;  and (e) such filings and approvals as may
be required by any  applicable  state  takeover laws or  Environmental  Laws. No
Third-Party  Consent is required by or with respect to the Company in connection
with the execution and delivery of the Transaction Documents or the consummation
of the  transactions  contemplated  hereby or  thereby,  except for (x) any such
Third-Party  Consent which the failure to obtain would not,  individually  or in
the aggregate,  have a Material  Adverse Effect on the Company and (y) the valid
approval of the Company Proposal by the shareholders of the Company.

     3.6 SEC  Documents.  The  Company has made  available  to Parent a true and
complete copy of each report,  schedule,  registration statement, and definitive
proxy  statement  filed by the Company with the SEC since  December 31, 1996 and
prior to or on the date of this Agreement (the "Company SEC  Documents"),  which
are all the documents  (other than  preliminary  material)  that the Company was
required  to file with the SEC  between  December  31, 1996 and the date of this
Agreement.  As of their respective dates, the Company SEC Documents  complied in
all  material  respects  with  the  requirements  of the  Securities  Act or the
Exchange  Act,  as the case may be,  and the  rules and  regulations  of the SEC
thereunder applicable to such Company SEC Documents, and none of the Company SEC
Documents  contained any untrue statement of a material fact or omitted to state
a  material  fact  required  to be  stated  therein  or  necessary  to make  the
statements  therein,  in light of the circumstances in which they were made, not
misleading.  The financial statements of the Company included in the Company SEC
Documents  (the  "Company  Financial  Statements")  complied  as to  form in all
material  respects  with the  published  rules and  regulations  of the SEC with
respect  thereto,  were prepared in accordance with GAAP applied on a consistent
basis  during the  periods  involved  (except as may be  indicated  in the notes
thereto or, in the case of the unaudited statements,  as permitted by Rule 10-01
of Regulation S-X of the SEC) and fairly present in accordance  with  applicable
requirements  of GAAP  (subject,  in the case of the  unaudited  statements,  to
normal,  recurring  adjustments,  none of which are material)  the  consolidated
financial  position  of  the  Company  as of  their  respective  dates  and  the
consolidated  results  of  operations  and the  consolidated  cash  flows of the
Company for the periods presented therein. Section 3.6 of the Company Disclosure

                                       17

<PAGE>

Schedule describes all agreements,  arrangements,  or understandings between the
Company and any party who is (any time after  December 31, 1996) an Affiliate of
the Company that are required to be disclosed in the Company SEC Documents.

     3.7 Capital Structure.

          (a) The authorized capital stock of the Company consists of 12,000,000
     shares of Company  Common Stock and 2,000,000  shares of Company  Preferred
     Stock.

          (b) As of the date  hereof,  (i)  there  are  issued  and  outstanding
     4,353,827 shares of Company Common Stock and (ii) 243,536 shares of Company
     Common  Stock are held by the  Company as  treasury  stock.  As of the date
     hereof,  371,736  shares of Company Common Stock are issuable upon exercise
     of outstanding Company Options (whether or not currently  exercisable).  As
     of the date hereof,  there are no shares of Company  Preferred Stock issued
     and  outstanding.  As of the date hereof,  4,353,827  rights are issued and
     outstanding under the Rights Agreement.

          (c) Except as set forth in Section  3.7(b),  there are outstanding (i)
     no shares of capital stock or other voting securities of the Company,  (ii)
     no  securities  of the  Company  or any other  Person  convertible  into or
     exchangeable  or  exercisable  for shares of capital  stock or other voting
     securities of the Company,  and (iii) no Company Stock Equivalents or other
     options  issued  or  outstanding  or  any  other  subscriptions,   options,
     warrants,   calls,  rights  (including  preemptive  rights),   commitments,
     understandings or agreements to which the Company is a party or by which it
     is bound obligating the Company to issue, deliver,  sell, purchase,  redeem
     or  acquire  shares of  capital  stock or other  voting  securities  of the
     Company (or securities  convertible into or exchangeable or exercisable for
     shares of capital  stock or other  voting  securities  of the  Company)  or
     obligating   the   Company  to  grant,   extend  or  enter  into  any  such
     subscription,  option, warrant, call, right,  commitment,  understanding or
     agreement.

          (d)  Other  than  the  Stock  Voting  Agreements,  there  are  not any
     shareholder agreements, voting trusts or other agreements or understandings
     to which the  Company  is a party or by which it is bound  relating  to the
     voting of any shares of the capital stock of the Company that will limit in
     any way the solicitation of proxies by or on behalf of the Company,  or the
     casting of votes by the  shareholders  of the Company  with  respect to the
     Merger. Other than the Stock Voting Agreements,  there are no agreements or
     understandings  to  which  the  Company  is a party or by which it is bound
     relating to  registration  rights or transfer of securities of the Company.
     The exercise price or conversion  price of each of the outstanding  Company
     Options,  the holder  thereof and when each Company  Option  became or will
     become exercisable is set forth in Section 3.7(b) of the Company Disclosure
     Schedule.

     3.8 No Undisclosed Liabilities.  There are no liabilities of the Company of
any  kind  whatsoever,   whether  accrued,  contingent,   absolute,  determined,
determinable or otherwise,  that would, individually or in the aggregate, have a
Material  Adverse Effect on the Company,  other than (a) liabilities  adequately
provided for in the Company Financial  Statements,  (b) liabilities  incurred in
the ordinary course of business subsequent to December 31, 1999, (c) liabilities
under  this  Agreement,  and (d)  liabilities  set forth in  Section  3.8 of the
Company  Disclosure  Schedule.  As of  the  date  hereof,  the  Company  has  no
indebtedness for borrowed money.

                                       18

<PAGE>

     3.9  Indemnification.  Except as set forth in  Section  3.9 of the  Company
Disclosure  Schedule,   the  Company  does  not  have  any  presently  effective
indemnification obligation (whether or not a claim has been asserted thereunder)
to any Person other than its present or former directors, officers, employees or
agents as provided in the organizational  documents of the Company, as permitted
by  the  OGCA,  and  pursuant  to  indemnification  agreements  with  any of the
Company's employees, officers and directors.

     3.10 Absence of Certain Changes or Events. Except as otherwise set forth in
Section 3.10 of the Company Disclosure Schedule or as specifically  contemplated
by the Transaction Documents,  since December 31, 1999, the Company has not done
any of the  following:  (a)......Discharged  or  satisfied  any Lien or paid any
obligation or liability,  absolute or contingent, other than current liabilities
incurred and paid in the ordinary  course of business and  consistent  with past
practices;

          (b)  Paid,  declared  or set  aside  any  dividends  or  distributions
     (whether payable in cash,  property or securities),  purchased,  cancelled,
     redeemed,  acquired or retired any indebtedness,  stock or other securities
     from its shareholders or other securityholders, made any loans, advances or
     capital   contributions   or  guaranteed  any  loans  or  advances  to,  or
     investments  in, any Person (other than loans,  advances or guaranties made
     in the ordinary course of business and consistent with past practices),  or
     otherwise incurred or suffered to exist any liabilities (other than current
     liabilities incurred in the ordinary course of business and consistent with
     past practices);

          (c) Except for Permitted Encumbrances,  suffered or permitted any Lien
     to arise or be granted or created against or upon any of its assets;

          (d)  Canceled,  waived or released  any rights or claims  against,  or
     indebtedness owed by, third parties;

          (e) Amended its  certificate or articles of  incorporation,  bylaws or
     other organizational documents;

          (f) Made or  permitted  any  amendment,  supplement,  modification  or
     termination of, or any acceleration under, any Company Material Agreement;

          (g) Sold,  leased,  transferred,  assigned,  farmed  out or  otherwise
     disposed of or mortgaged,  pledged or otherwise  encumbered (i) any Oil and
     Gas Interests of the Company that,  individually or in the aggregate,  were
     assigned a value in the  Reserve  Data  Value of $25,000 or more,  (ii) any
     mineral interests or undeveloped  leasehold  interests or any other Oil and
     Gas Interests not reflected in the Company Engineering Report, or (iii) any
     other assets that,  individually  or in the  aggregate,  had a value at the
     time of such lease, transfer,  assignment or disposition of $25,000 or more
     (and,  in each case  where a sale,  lease,  transfer,  assignment  or other
     disposition  was made, it was made for fair  consideration  in the ordinary
     course of business); provided, however, that this Section 3.10(g) shall not
     apply to the sale of  Hydrocarbons  in the ordinary  course of business and
     the  execution of oil and gas leases with  respect to mineral  interests in
     the ordinary course of business;

                                       19

<PAGE>

          (h) Made any investment in or contribution,  payment,  advance or loan
     to any Person (other than investments, contributions, payments or advances,
     or commitments  with respect  thereto,  less than $10,000 in the aggregate,
     made  in  the  ordinary   course  of  business  and  consistent  with  past
     practices);

          (i) Paid,  loaned or advanced (other than the payment,  advancement or
     reimbursement  of expenses in the ordinary  course of business) any amounts
     to, or sold,  transferred  or leased any of its assets to, or entered  into
     any other transaction with, any of its Affiliates;

          (j) Made  any  material  change  in any of the  accounting  principles
     followed by it or the method of applying such principles;

          (k) Entered into any material  transaction (other than the Transaction
     Documents)  except in the ordinary  course of business and consistent  with
     past practices;

          (l)  Increased  benefits  or  benefit  plan  costs or  changed  bonus,
     insurance,  pension,  severance,  compensation or any other benefit plan or
     arrangement  or granted or entered  into any  agreement  providing  for any
     severance,  termination  or  retention  plan or  agreement  or any bonus or
     increase in wages, salary or other compensation or made any other change in
     employment terms to any officer, director or employee of the Company;

          (m) Issued  any note or other  debt  security  or  created,  incurred,
     assumed or guaranteed  any  indebtedness  for borrowed money or capitalized
     lease  obligation  involving more than $10,000 in the aggregate (other than
     pursuant to the Company Bank Credit Agreement);

          (n) Delayed or  postponed  the  payment of  accounts  payable or other
     liabilities (except in the ordinary course of business);

          (o) Canceled,  compromised,  waived or released any right or claim (or
     series of related rights and claims) involving more than $100,000;

          (p) Issued, sold, or otherwise disposed of any of its capital stock or
     other  equity  interest or granted any option,  warrant,  or other right to
     purchase or obtain (including upon conversion,  exchange,  or exercise) any
     of its capital stock or other equity interest;

          (q) Made any loan to, or entered into any other  transaction with, any
     of its directors, officers or employees;

          (r)  Made  or  pledged  to  make  any   charitable  or  other  capital
     contribution;

          (s) Made or  committed  to make any  single  (or  series  of  related)
     capital expenditure in excess of $100,000;

          (t) Made any change in any  material  Tax election or the manner Taxes
     are reported;

                                       20

<PAGE>

          (u)  Entered  into any swap,  hedging  or  similar  arrangement  which
     remains open;

          (v)  Accelerated  the  vesting  period  of any  outstanding  option or
     warrant;

          (w) Otherwise been involved in any other material  occurrence,  event,
     incident,  action,  failure to act, or  transaction  involving  the Company
     (except in the ordinary course of business);

          (x)  Agreed,  whether  in  writing  or  otherwise,  to do  any  of the
     foregoing;

          (y) Suffered any material damage, destruction, or loss, whether or not
     covered by insurance, affecting its assets or prospects;

          (z) Suffered any material labor trouble or any material  controversies
     with any of its employees or collective bargaining association representing
     any of its employees;

          (aa) Taken any of the  actions  referred  to in  Sections  5.1(a)(ii),
     5.1(b)(ix),  5.1(c)(v)  and 5.1(e)  except as would have been  permitted or
     required  thereby had such  Sections  been  applicable  at the time of such
     action; or

          (bb) Suffered any Material Adverse Effect.

     3.11 Compliance with Laws, Material Agreements and Permits.  The Company is
not in violation of, or in default in any material  respect under,  and no event
has occurred that (with notice or the lapse of time or both) would  constitute a
violation of or default under (a) its certificate or articles of  incorporation,
bylaws  or  other  organizational  documents,  (b)  any  applicable  law,  rule,
regulation,  ordinance,  order,  writ,  decree or judgment  of any  Governmental
Authority, or (c) any Company Material Agreement,  except (in the case of clause
(b) or (c) above) for any violation or default that would not,  individually  or
in the aggregate, have a Material Adverse Effect on the Company. The Company has
obtained  and  holds  all  permits,  licenses,  variances,  exemptions,  orders,
franchises,   approvals  and  authorizations  of  all  Governmental  Authorities
necessary for the lawful conduct of its business and the lawful  ownership,  use
and  operation of its assets  ("Company  Permits"),  except for Company  Permits
which the failure to obtain or hold would not, individually or in the aggregate,
have a Material Adverse Effect on the Company.  None of the Company Permits will
be adversely affected by the consummation of the transactions contemplated under
any of the Transaction Documents or requires any filing or consent in connection
therewith.  The Company is in compliance with the terms of its Company  Permits,
except where the failure to comply would not,  individually or in the aggregate,
have a Material Adverse Effect on the Company. No investigation or review by any
Governmental  Authority  with  respect  to the  Company  is  pending  or, to the
knowledge  of the  Company,  threatened,  other than those the  outcome of which
would not,  individually or in the aggregate,  have a Material Adverse Effect on
the Company.  To the  knowledge  of the  Company,  no other party to any Company
Material Agreement is in material breach of the terms,  provisions or conditions
of such Company Material Agreement.

     3.12  Governmental  Regulation.  The Company is not  subject to  regulation
under the Public Utility Holding Company Act of 1935, the Federal Power Act, the

                                       21

<PAGE>

Interstate  Commerce Act, the Investment Company Act of 1940 or any state public
utilities  laws.

     3.13  Litigation.  Except  as set  forth  in  Section  3.13 of the  Company
Disclosure  Schedule:  (a) no litigation,  arbitration,  investigation  or other
proceeding of any Governmental  Authority is pending or, to the knowledge of the
Company,  threatened  against  the  Company or its assets  which,  if  adversely
determined,  would,  individually or in the aggregate,  have a Material  Adverse
Effect  on the  Company;  (b) the  Company  is not  subject  to any  outstanding
injunction,   judgment,  order,  decree,   settlement  agreement,   conciliation
agreement, letter of commitment, deficiency letter or ruling (other than routine
oil and gas field regulatory orders);  and (c) the Company is not subject to any
settlement agreement,  conciliation agreement, letter of commitment,  deficiency
letter or consent  decree with any present or former  employee of the Company or
applicant  for  employment  with the  Company,  labor  union  or other  employee
representative, or any Governmental Authority relating to claims of unfair labor
practices, employment discrimination, or other claims with respect to employment
and labor  practices and policies,  and no  Governmental  Authority has issued a
judgment, order, decree, injunction,  decision, award or finding with respect to
the  employment  and labor  practices  or policies of the Company  which has any
present  material  effect  (or could  have any  future  material  effect) on the
Company or the employment and labor practices and policies of the Company. There
is no litigation,  proceeding or  investigation  pending or, to the knowledge of
the Company,  threatened  against or affecting  the Company that  questions  the
validity or enforceability  of this Agreement or any other document,  instrument
or agreement to be executed and delivered by the Company in connection  with the
transactions  contemplated  hereby.  Section  3.13  of  the  Company  Disclosure
Schedule  contains  an  accurate  and  complete  list of all suits,  actions and
proceedings  pending or, to the knowledge of the Company,  threatened against or
affecting the Company as of the date hereof.

     3.14 No  Restrictions.  Except as set forth in Section  3.14 of the Company
Disclosure Schedule, the Company is not a party to: (a) any agreement, indenture
or other  instrument that contains  restrictions  with respect to the payment of
dividends or other distributions with respect to its capital;  (b) any financial
arrangement with respect to or creating any indebtedness to any Person;  (c) any
agreement,  contract or commitment  relating to the making of any advance to, or
investment  in,  any Person  (other  than  advances  in the  ordinary  course of
business);  (d) any guaranty or other  contingent  liability with respect to any
indebtedness or obligation of any Person (other than (i) guaranties  pursuant to
the Company Bank Credit  Agreement,  (ii) guaranties  undertaken in the ordinary
course of business,  and (iii) the  endorsement  of negotiable  instruments  for
collection in the ordinary  course of business);  (e) any  management,  service,
consulting,  or other  contract of a similar nature that cannot be terminated by
the Company, upon written notice of 30 days or less and without penalty or other
obligation; or (f) any agreement, contract or commitment limiting in any respect
its ability to compete with any Person or otherwise conduct business of any line
or nature.

     3.15  Audits and  Settlements.  Except as set forth in Section  3.15 of the
Company  Disclosure  Schedule,  the Company is not a party or subject to any (a)
unresolved or incomplete Tax audit or settlement or (b) other audit conducted by
any other Person pursuant to a contractual or legal right.

                                       22

<PAGE>

     3.16 Taxes.

          (a) The Company and any affiliated, combined or unitary group of which
     the  Company  is or was a member  has:  (i)  timely  filed all Tax  Returns
     required to be filed by it with respect to any Taxes, which Tax Returns are
     true, correct and complete in all material  respects;  (ii) timely paid all
     Taxes that are due and payable  (except for Taxes that are being  contested
     in good faith by appropriate  proceedings and for which sufficient reserves
     have been established) for which the Company may be liable;  (iii) complied
     with all applicable laws, rules and regulations  relating to the reporting,
     payment and  withholding of Taxes;  and (iv) timely  withheld from employee
     wages and paid over to the  proper  governmental  authorities  all  amounts
     required to be so withheld and paid over.

          (b) Except as set forth in Section  3.16(b) of the Company  Disclosure
     Schedule:  (i) no audits or other  administrative  or court proceedings are
     presently  pending or, to the  knowledge of the Company,  threatened,  with
     regard to any federal,  state or local Taxes for which the Company would be
     liable;  and (ii) there are no pending requests for rulings from any taxing
     authority,  no  outstanding  subpoenas or requests for  information  by any
     taxing  authority with respect to any Taxes, no proposed  reassessments  by
     any taxing authority of any property owned or leased,  and no agreements in
     effect  to  extend  the  time  to file  any Tax  Return  or the  period  of
     limitations  for the  assessment  or  collection of any Taxes for which the
     Company would be liable.

          (c) Except as set forth in Section  3.16(c) of the Company  Disclosure
     Schedule:  (i) there are no Liens on any of the assets of the  Company  for
     unpaid Taxes,  other than inchoate Liens for Taxes not yet due and payable;
     (ii) the Company has no liability under Treasury Regulation  ss.1.1502-6 or
     any analogous state, local or foreign law by reason of having been a member
     of any consolidated, combined or unitary group; (iii) the Company has never
     been included in an affiliated group of corporations  within the meaning of
     Section  1504 of the Code;  and (iv) the Company  neither is nor has been a
     party  to  any  Tax  sharing  or  allocation   agreement   between  related
     corporations.

          (d) The  total  amounts  reflected  as  liabilities  for  current  and
     deferred Taxes in the Company Financial  Statements are sufficient to cover
     the payment of all Taxes,  whether or not assessed or disputed,  which are,
     or are  hereafter  found to be, or to have been,  due by or with respect to
     the Company up to and through the periods ending on the dates thereof.

          (e) The Company has made  available to Parent  complete  copies of all
     Tax  Returns  filed by the  Company  with  respect to any Taxes and all Tax
     audit  reports,  work papers,  statements of  deficiencies,  and closing or
     other  agreements with respect thereto with respect to Tax years 1997, 1998
     and 1999.

          (f) Except as set forth in Section  3.16(f) of the Company  Disclosure
     Schedule:  (i) the  Company is not  required  to treat any of its assets as
     owned by another  person for federal  income tax purposes or as  tax-exempt
     bond  financed  property or tax-exempt  use property  within the meaning of
     Section  168 of the  Code;  (ii)  the  Company  has not  entered  into  any
     compensatory  agreement which under certain circumstances could result in a
     limited deductible  expense or a nondeductible  expense pursuant to Section
     280G or Section  162(m) of the Code;  (iii) no election has been made under

                                       23

<PAGE>

     Section 338 of the Code and no events have occurred which would result in a
     deemed  election under Section 338 of the Code with respect to the Company;
     (iv) no  election  has been  made  under  Section  341(f)  of the Code with
     respect  to the  Company;  (v)  the  Company  has not  participated  in any
     international  boycott as defined in Code  Section  999;  (vi) there are no
     outstanding  balances of deferred gain or loss accounts with respect to the
     Company under Treas. Reg. ss.ss. 1.1502-13 or 1.1502-13T; (vii) the Company
     has  not  made  nor  will  it  make  any   election   under   Treas.   Reg.
     ss.1.502-20(g)(1)  with  respect  to the  reattribution  of  net  operating
     losses;  (viii) the Company is not subject to any arrangement  treated as a
     partnership subject to the provisions of subchapter K of the Code; and (ix)
     the Company has never  conducted  branch  operations in any foreign country
     within the meaning of Treas. Reg. ss.1.367(a)-6T.

          (g) The books and records of the Company contain accurate and complete
     information  with respect to: (i) all material Tax elections in effect with
     respect to the  Company;  (ii) the  current  Tax basis of the assets of the
     Company;  (iii) any excess loss  accounts of the Company;  (iv) the current
     and accumulated  earnings and profits of the Company; (v) the net operating
     losses  and net  capital  losses of the  Company,  the years  that such net
     operating and net capital losses expire, and any restrictions to which such
     net operating and net capital losses are subject under any provision of the
     Code or consolidated return regulations;  (vi) Tax credit carryovers of the
     Company;  and (vii) any overall foreign losses to the Company under Section
     904(f) of the Code.

          (h) No shareholder  of the Company that is a foreign  corporation or a
     nonresident  alien  individual  has  owned as much as five  percent  of the
     outstanding  stock of the Company at any time during the  five-year  period
     ending on the date hereof.

     3.17 Employee Benefit Plans.

          (a) Section  3.17(a) of the Company  Disclosure  Schedule sets forth a
     complete and accurate  list of each of the  following  (whether  oral or in
     writing) which is or has been sponsored, maintained or contributed to since
     January 1, 1994,  by the Company or any trade or  business,  whether or not
     incorporated (a "Company ERISA Affiliate"),  that together with the Company
     would be  considered  affiliated  with the  Company  or any  Company  ERISA
     Affiliate  under  Section  414(b),  (c),  (m) or (o) of the Code or Section
     4001(b)(1)  of ERISA for the benefit of any person who, as of the  Closing,
     is a current or former employee or subcontractor  of the Company:  (i) each
     "employee  benefit  plan," as such term is defined in Section 3(3) of ERISA
     (each,  a "Company  Plan");  and (ii) each personnel  policy,  stock option
     plan,  bonus plan or  arrangement,  incentive  award  plan or  arrangement,
     vacation policy, severance pay plan, policy, program or agreement, deferred
     compensation   agreement  or   arrangement,   executive   compensation   or
     supplemental  income  arrangement,  retiree  benefit  plan or  arrangement,
     fringe benefit program or practice (whether or not taxable), employee loan,
     consulting agreement,  employment  agreement,  severance agreement and each
     other employee benefit plan, agreement,  arrangement,  program, practice or
     understanding  which  is not  described  in  Section  3.17(a)(i)  (each,  a
     "Company  Benefit  Program or  Agreement")  (such Company Plans and Company
     Benefit  Programs or Agreements are sometimes  collectively  referred to in
     this Agreement as the "Company Employee Benefit Plans").

          (b) True, correct and complete copies of each of the Company Plans and
     related trusts, if applicable,  including all amendments thereto, have been
     furnished  or made  available to Parent.  There has also been  furnished or

                                       24

<PAGE>


     made  available to Parent,  with  respect to each Company Plan  required to
     file such  report  and  description,  the  report on Form 5500 for the past
     three years,  to the extent  applicable,  and the most recent  summary plan
     description.  True,  correct and  complete  copies or  descriptions  of all
     Company  Benefit  Programs or Agreements  have also been  furnished or made
     available to Parent.

          (c) Except as  otherwise  set forth in Section  3.17(c) of the Company
     Disclosure  Schedule:  (i)  neither  the  Company  nor  any  Company  ERISA
     Affiliate  contributes to or has an obligation to contribute to, nor has at
     any time since  January 1, 1994,  contributed  to or had an  obligation  to
     contribute to, a multiemployer  plan within the meaning of Section 3(37) of
     ERISA or any other  plan  subject  to Title IV of  ERISA;  (ii) each of the
     Company and the Company ERISA  Affiliates  has  performed all  obligations,
     whether arising by operation of law or by contract, including ERISA and the
     Code,  required  to be  performed  by it in  connection  with  the  Company
     Employee  Benefit Plans,  and, to the knowledge of the Company,  there have
     been no defaults or violations  by any other party to the Company  Employee
     Benefit Plans; (iii) all reports, returns,  notices,  disclosures and other
     documents  relating  to the  Company  Plans  required  to be filed  with or
     furnished to governmental entities, plan participants or plan beneficiaries
     have been timely filed or furnished in accordance  with applicable law, and
     each Company Employee Benefit Plan has been administered in compliance with
     its governing written documents; (iv) each of the Company Plans intended to
     be qualified  under Section 401 of the Code satisfies the  requirements  of
     such Section and has received a favorable determination letter from the IRS
     regarding  such  qualified  status and has not been  amended,  operated  or
     administered in a way which would adversely  affect such qualified  status;
     (v) there are no  actions,  suits or claims  pending  (other  than  routine
     claims for benefits) or, to the knowledge of the Company,  contemplated  or
     threatened against, or with respect to, any of the Company Employee Benefit
     Plans or their assets;  (vi) each trust  maintained in connection with each
     Company  Plan,  which is qualified  under  Section 401 of the Code,  is tax
     exempt under Section 501 of the Code; (vii) all  contributions  required to
     be made to the Company Employee Benefit Plans have been made timely; (viii)
     no  accumulated  funding  deficiency,  whether  or not  waived,  within the
     meaning  of  Section  302 of  ERISA  or  Section  412 of the  Code has been
     incurred,  and there has been no termination or partial  termination of any
     Company Plan within the meaning of Section  411(d)(3) of the Code;  (ix) no
     act,  omission or transaction has occurred which could result in imposition
     on the Company or any Company  ERISA  Affiliate  of (A) breach of fiduciary
     duty  liability  damages  under  Section 409 of ERISA,  (B) a civil penalty
     assessed pursuant to subsections (c), (i) or (1) of Section 502 of ERISA or
     (C) a tax imposed  pursuant to Chapter 43 of Subtitle D of the Code; (x) to
     the  knowledge of the Company,  there is no matter  pending with respect to
     any of the Company  Plans  before the IRS, the  Department  of Labor or the
     PBGC; (xi) each of the Company Employee Benefit Plans complies, in form and
     operation, with the applicable provisions of the Code and ERISA; (xii) each
     Company Employee Benefit Plan may be unilaterally  amended or terminated in
     its entirety without any liability or other obligation;  (xiii) the Company
     and the Company ERISA Affiliates have no liabilities or other  obligations,
     whether actual or contingent,  under any Company  Employee Benefit Plan for
     post-employment  benefits  of any nature  (other  than  COBRA  continuation
     coverage and severance  benefits  under the Company's  Amended and Restated
     Change in Control  Severance  Pay Plan);  and (xiv) neither the Company nor
     any of the Company  ERISA  Affiliates  or any  present or former  director,
     officer, employee or other agent of the Company or any of the Company ERISA
     Affiliates has made any written or oral  representations or promises to any
     present or former director, officer, employee or other agent concerning his

                                       25

<PAGE>



     or her terms, conditions or benefits of employment, including the tenure of
     any such  employment or the conditions  under which such  employment may be
     terminated by the Company,  any of the Company ERISA  Affiliates which will
     be binding upon or enforceable against Parent or the Surviving  Corporation
     after the Effective Time.

          (d) Except as  otherwise  set forth in Section  3.17(d) of the Company
     Disclosure Schedule,  no employee is currently on a leave of absence due to
     sickness or disability and no claim is pending or expected to be made by an
     employee,   former   employee  or   independent   contractor  for  workers'
     compensation benefits.

          (e) Except as set forth in Section  3.17(e) of the Company  Disclosure
     Schedule:  (i) with respect to the Company  Employee  Benefit Plans,  there
     exists no condition or set of circumstances that would,  individually or in
     the aggregate, have a Material Adverse Effect on the Company, and (ii) with
     respect to the Company  Employee  Benefit  Plans,  individually  and in the
     aggregate,  there are no unfunded benefit  obligations  which have not been
     accounted for by reserves,  or otherwise  properly  footnoted in accordance
     with GAAP, on the financial  statements of the Company,  which  obligations
     would,  individually or in the aggregate, have a Material Adverse Effect on
     the Company.

          (f) Except as set forth in Section  3.17(f) of the Company  Disclosure
     Schedule,  neither the  execution  or delivery  of this  Agreement  nor the
     consummation  of the  transactions  contemplated  hereby will result in any
     payment becoming due to any employee or group of employees of the Company.

          (g) Except as set forth in Section  3.17(g) of the Company  Disclosure
     Schedule,  there will be no payments due to any employee of the Company (i)
     by virtue of the termination of such employment  relationship without cause
     immediately after the Effective Time or (ii) that become due as a result of
     the occurrence of the Effective Time,  whether  severance,  bonus,  accrued
     vacation  or tax  indemnification  obligations,  excluding  accrued  salary
     through  the  date of such  termination.  Section  3.17(g)  of the  Company
     Disclosure  Schedule sets forth the name of each employee of the Company to
     whom such  payments  may  become  due and  separately  sets  forth for each
     employee  the  amounts  of  severance,   bonus,   accrued   vacation,   tax
     indemnification  obligation and any other similar  payments that may become
     due to each such employee.

          (h) Except as set forth in Section  3.17(h) of the Company  Disclosure
     Schedule,  no employee of the Company or any other Person owns,  or has any
     right granted by the Company to acquire,  any interest in any of the assets
     or business of the Company.

     3.18 Company  Material  Agreements.  Except as set forth in Section 3.18 of
the Company Disclosure Schedule, there are no Company Material Agreements.

     3.19 Labor and Employment Matters.

          (a)  No  employees  of  the  Company  are  represented  by  any  labor
     organization.  No labor  organization  or group of employees of the Company
     has, at any time,  made a demand for  recognition or  certification  as the
     exclusive bargaining representative of any of the employees of the Company,
     and there are no representation  or certification  proceedings or petitions

                                       26

<PAGE>



     seeking such representation or certification  proceeding  presently pending
     or  threatened  in writing to be brought or filed with the  National  Labor
     Relations Board or any other labor relations  tribunal or authority.  There
     are no organizing activities involving employees of the Company.

          (b) The  Company  is in  material  compliance  with all  laws,  rules,
     regulations and orders relating to labor and employment,  including without
     limitation all such laws,  rules,  regulations and orders relating to wages
     and  other  compensation,  employee  benefits,  hours of  work,  collective
     bargaining,  discrimination,  civil rights,  affirmative action, safety and
     health, workers' compensation, plant closing and mass layoff, unemployment,
     disability,  whistleblowing,  and the  collection and payment of income Tax
     withholding,  Social  Security  Taxes,  Medicare  Taxes and similar  Taxes,
     except  where the  failure  to comply  would  not,  individually  or in the
     aggregate, have a Material Adverse Effect on the Company.

          (c) The  Company  does not have,  and has not had since  December  31,
     1999, any charges,  complaints or proceedings  before the Equal  Employment
     Opportunity  Commission,  Department  of  Labor or any  other  Governmental
     Authority responsible for regulating labor or employment practices, pending
     or, to the Company's knowledge, threatened against the Company.

     3.20  Accounts  Receivable.  Except  as set  forth in  Section  3.20 of the
Company Disclosure Schedule: (a) all of the accounts, notes and loans receivable
that have been  recorded on the books of the Company are bona fide and represent
accounts,  notes and loans  receivable  validly  due for goods sold or  services
rendered  and are  reasonably  expected to be  collected  in full within 90 days
after the  applicable  invoice or note maturity date (other than such  accounts,
notes and loans receivable that, individually or in the aggregate, do not have a
book value as of the date hereof in excess of $10,000); (b) except for Permitted
Encumbrances,  all of such  accounts,  notes and loans  receivable  are free and
clear of any and all Liens and other  adverse  claims and  charges,  and none of
such  accounts,  notes or loans  receivable is subject to any offset or claim of
offset; and (c) none of the obligors on such accounts, notes or loans receivable
has  given  notice  to the  Company  that it will or may  refuse to pay the full
amount or any portion thereof.

     3.21  Insurance.  Set forth in Section  3.21(i) of the  Company  Disclosure
Schedule  is  an  accurate  listing  of  the  Company's  insurance  schedule  of
directors'  and  officers'  liability  insurance,  primary  and excess  casualty
insurance  policies  providing coverage for bodily injury and property damage to
third  parties,  including  any  products  liability  and  completed  operations
coverage, and workers compensation, in effect as of the date hereof. The Company
maintains   insurance   with   reputable   insurers   (or  pursuant  to  prudent
self-insurance  programs)  in such  amounts  and  covering  such risks as are in
accordance  with normal  industry  practice for companies  engaged in businesses
similar to that of the Company and owning properties in the same general area in
which the Company  conducts its business.  The Company may terminate each of its
insurance  policies  or  binders  at or after  the  Closing  and  will  incur no
penalties or other material  costs in doing so. None of such insurance  coverage
was obtained  through the use of false or misleading  information or the failure
to provide the insurer with all  information  requested in order to evaluate the
liabilities and risks insured.  There is no material default with respect to any
provision contained in any such policy or binder, and the Company has not failed
to give any notice or present  any claim  under any such policy or binder in due
and timely  fashion.  There are no billed but unpaid premiums past due under any
such  policy or binder.  Except as set forth in Section  3.21(ii) of the Company

                                       27

<PAGE>


Disclosure Schedule: (a) there are no outstanding claims under any such policies
or binders  and, to the  knowledge  of the  Company,  there has not occurred any
event that might  reasonably  form the basis of any claim against or relating to
the  Company  that is not covered by any of such  policies  or  binders;  (b) no
notice of  cancellation  or non-renewal of any such policies or binders has been
received; and (c) there are no performance bonds outstanding with respect to the
Company.

     3.22 Intangible Property.  There are no material  trademarks,  trade names,
patents,  service marks, brand names, computer programs,  databases,  industrial
designs,  copyrights  or other  intangible  property  that are necessary for the
operation,  or continued  operation,  of the business of the Company, or for the
ownership and operation,  or continued  ownership and  operation,  of any of its
assets,  for which the Company does not hold valid and  continuing  authority in
connection with the use thereof.

     3.23 Title to Assets.  The Company has  Defensible  Title to all of its Oil
and Gas  Interests.  Each Oil and Gas  Interest  included  or  reflected  in the
Ownership  Interests entitles the Company to receive not less than the undivided
interest  set  forth  in  (or  derived  from)  the  Ownership  Interests  of all
Hydrocarbons  produced,  saved and sold from or attributable to such Oil and Gas
Interest, and the portion of the costs and expenses of operation and development
of such Oil and Gas Interest  that is borne or to be borne by the Company is not
greater than the undivided interest set forth in (or derived from) the Ownership
Interests. Except for Permitted Encumbrances,  the Company has good, marketable,
and defensible  title to its assets (other than the Oil and Gas Interests of the
Company). All leases pursuant to which the Company leases any assets are in full
force and effect,  and the Company has not received any notice of default  under
any such lease.

     3.24 Company Engineering  Report. All information  supplied to Parent by or
on behalf  of the  Company  that was  material  to  Parent's  evaluation  of the
Company's  Oil and Gas  Interests  in  connection  with the  preparation  of the
Company  Engineering  Report was (at the time supplied or as modified or amended
prior to the issuance of the Company Engineering Report) true and correct in all
material respects. Except for changes in classification or values of oil and gas
reserve or property  interests that occurred in the ordinary  course of business
since December 31, 1999 and except for changes  (including  changes in commodity
prices) generally affecting the oil and gas industry, there has been no material
adverse change with respect to the matters addressed in the Company  Engineering
Report.

     3.25 Oil and Gas  Operations.  Except as set forth in  Section  3.25 of the
Company Disclosure  Schedule,  to the knowledge of the Company,  as to wells not
operated by the Company, and without qualification as to knowledge,  as to wells
operated by the Company:

          (a) Except as  reflected  in Section  3.25 of the  Company  Disclosure
     Schedule,  as of the respective  dates reflected  thereon,  (i) none of the
     wells  included  in the Oil and  Gas  Interests  of the  Company  has  been
     overproduced  such that it is subject or liable to being  shut-in or to any
     overproduction  penalty,  (ii) the Company has not received any  deficiency
     payment  under any gas  contract  for which any  Person has a right to take
     deficiency gas from the Company, and (iii) the Company has not received any
     payment  for  production  which is subject to refund or  recoupment  out of
     future production;

                                       28

<PAGE>

          (b) There have been no changes  proposed in the production  allowables
     for any wells  included in the Oil and Gas  Interests  of the Company  that
     could  reasonably  be  expected  to have a Material  Adverse  Effect on the
     Company;

          (c) All wells  included  in the Oil and Gas  Interests  of the Company
     have been drilled and (if completed) completed,  operated,  and produced in
     accordance  with good oil and gas field  practices and in compliance in all
     material  respects with applicable oil and gas leases and applicable  laws,
     rules,  and  regulations,  except where any failure or violation  could not
     reasonably be expected to have a Material Adverse Effect on the Company;

          (d) The  Company  has  neither  agreed to nor is it now  obligated  to
     abandon any well  operated by it and included in the Oil and Gas  Interests
     of the Company that is or will not be abandoned and reclaimed in accordance
     with applicable laws,  rules, and regulations and good oil and gas industry
     practices;

          (e)  Proceeds  from  the  sale  of  Hydrocarbons   produced  from  and
     attributable  to the Company's Oil and Gas Interests are being  received by
     the Company in a timely  manner and are not being held in suspense  for any
     reason (except for amounts, individually or in the aggregate, not in excess
     of $20,000 and held in suspense in the ordinary course of business);

          (f) No Person has any call on, option to purchase,  or similar  rights
     with respect to the Company's  Oil and Gas  Interests or to the  production
     attributable   thereto,   and  upon   consummation   of  the   transactions
     contemplated by this  Agreement,  the Company will have the right to market
     production  from  the  Company's  Oil and Gas  Interests  on  terms no less
     favorable  than the terms upon which such  company is  currently  marketing
     such production; and

          (g) All royalties,  overriding royalties,  compensatory  royalties and
     other  payments  due from or in respect of  production  with respect to the
     Company's  Oil and Gas  Interests,  have  been or  will  be,  prior  to the
     Effective Time, properly and correctly paid or provided for in all material
     respects,  except  for those for which  the  Company  has a valid  right to
     suspend.

     3.26  Hydrocarbon  Sales  and  Purchase  Agreements.  Except  as  otherwise
disclosed in Section 3.26 of the Company Disclosure Schedule:

          (a)  None  of the  Hydrocarbon  Sales  Agreements  of the  Company  or
     Hydrocarbon  Purchase Agreements of the Company has required since December
     31, 1999, or will require as of or after the Closing Date,  the Company (i)
     to have sold or delivered, or to sell or deliver,  Hydrocarbons for a price
     materially  less than the market value price that would have been, or would
     be, received pursuant to any arm's-length  contract for a term of one month
     with an  unaffiliated  third-party  purchaser or (ii) to have  purchased or
     received,  or to purchase or receive,  Hydrocarbons  for a price materially
     greater than the market value price that would have been, or would be, paid
     pursuant  to an  arm's-length  contract  for a term  of one  month  with an
     unaffiliated third-party seller;

          (b)  Each of the  Hydrocarbon  Agreements  of the  Company  is  valid,
     binding,  and in full force and effect,  and no party is in material breach
     or  default  of  any  Hydrocarbon  Agreement  of  the  Company,  and to the
     knowledge of the Company,  no event has occurred  that with notice or lapse

                                       29

<PAGE>


     of time (or both) would  constitute a material  breach or default or permit
     termination,  modification, or acceleration under any Hydrocarbon Agreement
     of the Company;

          (c)  There  have been no  claims  from any  third  party for any price
     reduction  or increase  or volume  reduction  or increase  under any of the
     Hydrocarbon  Agreements  of the  Company,  and the Company has not made any
     claims for any price reduction or increase or volume  reduction or increase
     under any of the Hydrocarbon Agreements of the Company;

          (d) Payments for Hydrocarbons  sold pursuant to each Hydrocarbon Sales
     Agreement  of  the  Company  have  been  made  (subject  to  adjustment  in
     accordance with such Hydrocarbon Sales Agreements) materially in accordance
     with prices or price-setting mechanisms set forth in such Hydrocarbon Sales
     Agreements;

          (e) No purchaser under any Hydrocarbon  Sales Agreement of the Company
     has notified the Company (or, to the knowledge of the Company, the operator
     of any property) of its intent to cancel,  terminate,  or  renegotiate  any
     Hydrocarbon  Sales Agreement of the Company or otherwise to fail and refuse
     to take and pay for Hydrocarbons in the quantities and at the price set out
     in any  Hydrocarbon  Sales  Agreement,  whether such failure or refusal was
     pursuant to any force majeure,  market out, or similar provisions contained
     in such Hydrocarbon Sales Agreement or otherwise;

          (f) The Company is not obligated in any Hydrocarbon Sales Agreement by
     virtue of any prepayment arrangement, a "take-or-pay" or similar provision,
     a production  payment,  or any other  arrangements to deliver  Hydrocarbons
     produced  from an Oil and Gas  Interest  of the Company at some future time
     without then or thereafter receiving payment therefor;

          (g) Section 3.26(g) of the Company Disclosure Schedule contains a true
     and correct  calculation of the Company's gas balancing positions as of the
     dates shown therein.

          (h)  The  Hydrocarbon  Agreements  of the  Company  are  of  the  type
     generally found in the oil and gas industry, do not, individually or in the
     aggregate,  contain  unusual or unduly  burdensome  provisions  that would,
     individually  or in the  aggregate,  have a Material  Adverse Effect on the
     Company, and are in form and substance considered normal within the oil and
     gas industry.

     3.27 Financial and Commodity  Hedging.  Other than the hedging  program set
forth in Exhibit E, the  Company has no  currently  outstanding  Hydrocarbon  or
financial hedging  positions  (including fixed price controls,  collars,  swaps,
caps,  hedges or puts).  Prior to the date hereof,  the Company  instituted  the
hedging  program set forth in Exhibit E and such hedging program is in effect in
accordance with its terms.

     3.28  Environmental  Matters.  Except as set forth in  Section  3.28 of the
Company Disclosure Schedule:

          (a) The Company has  conducted  its  business and operated its assets,
     and is  conducting  its  business  and  operating  its assets,  in material
     compliance with all Environmental Laws;

                                       30

<PAGE>

          (b) The Company has not been notified by any Governmental Authority or
     other  third party that any of the  operations  or assets of the Company is
     the subject of any  investigation or inquiry by any Governmental  Authority
     or other third party  evaluating  whether any material  remedial  action is
     needed to  respond  to a release or  threatened  release  of any  Hazardous
     Material  or to the  improper  storage or  disposal  (including  storage or
     disposal at offsite locations) of any Hazardous Material;

          (c) Neither the Company  nor, to the  Company's  knowledge,  any other
     Person  has  filed  any  notice  under  any  federal,  state or  local  law
     indicating  that (i) the Company is  responsible  for the improper  release
     into the environment, or the improper storage or disposal, of any Hazardous
     Material,  or (ii) any Hazardous  Material is improperly stored or disposed
     of upon any property of the Company or any property formerly owned,  leased
     or operated by the Company;

          (d) The Company has no material  contingent  liability  in  connection
     with (i) the release or threatened release into the environment at, beneath
     or on any  property  now or  previously  owned,  leased or  operated by the
     Company, or (ii) the storage or disposal of any Hazardous Material;

          (e) The Company has not received any claim, complaint, notice, inquiry
     or request for information involving any matter which remains unresolved as
     of  the  date  hereof  with  respect  to  any  alleged   violation  of  any
     Environmental Law or regarding  potential liability under any Environmental
     Law relating to or in  connection  with  operations  or  conditions  of any
     facilities  or  property  (including  off-site  storage or  disposal of any
     Hazardous Material from such facilities or property)  currently or formerly
     owned, leased or operated by the Company;

          (f) No property  now or  previously  owned,  leased or operated by the
     Company is listed on the National  Priorities List pursuant to CERCLA or on
     the  CERCLIS  or on any  other  federal  or state  list as sites  requiring
     investigation or cleanup;

          (g) All underground  storage tanks and solid waste storage,  treatment
     and/or  disposal  facilities  owned or operated by the Company are used and
     operated in material compliance with Environmental Laws;

          (h) The  Company  is not  transporting,  has not  transported,  is not
     arranging  or has not  arranged  for the  transportation  of any  Hazardous
     Material to any location  which is listed on the National  Priorities  List
     pursuant to CERCLA,  on the CERCLIS or on any similar federal or state list
     or which is the subject of federal,  state or local enforcement  actions or
     other  investigations  that may lead to material claims against the Company
     for removal or remedial  work,  contribution  for removal or remedial work,
     damage to natural  resources  or personal  injury,  including  claims under
     CERCLA;

          (i) The Company has obtained all material permits, licenses, approvals
     and other authorizations that are required with respect to the operation of
     the Company's properties and assets under the Environmental Laws and are in
     material compliance with all terms and conditions of such required permits,
     licenses, approvals and authorizations;

                                       31

<PAGE>

          (j) There are no polychlorinated biphenyls or asbestos located in, at,
     on or under any facility or real property owned,  leased or operated by the
     Company  that require  removal,  decontamination  or abatement  pursuant to
     Environmental Laws;

          (k) There are no past or present  events,  conditions,  circumstances,
     activities,  practices,  incidents  or  actions  that could  reasonably  be
     expected to interfere  with or prevent  material  compliance by the Company
     with any  Environmental  Law, or that could  reasonably be expected to give
     rise to any material liability under the Environmental Laws;

          (l) No Lien has been recorded against any property, facility or assets
     currently owned by the Company under any Environmental Law; and

          (m) The execution,  delivery and performance of this Agreement and the
     consummation of the  transactions  contemplated  hereby will not affect the
     validity or require the transfer of any permits, licenses or approvals held
     by the  Company  under any  Environmental  Law,  and will not  require  any
     notification, disclosure, registration, reporting, filing, investigation or
     remediation under any Environmental law.

     3.29  Books and  Records.  All  books,  records  and  files of the  Company
(including  those  pertaining to the Company's Oil and Gas Interests,  wells and
other assets, those pertaining to the production, gathering,  transportation and
sale  of  Hydrocarbons,  and  corporate,   accounting,  financial  and  employee
records):  (a) have been prepared,  assembled and maintained in accordance  with
usual and  customary  policies  and  procedures;  and (b) fairly and  accurately
reflect  the  ownership,  use,  enjoyment  and  operation  by the Company of its
assets.  The  Company  maintains  a  system  of  internal   accounting  controls
sufficient to provide reasonable assurance that: (x) transactions are accurately
and  promptly  recorded;  (y)  transactions  are  executed  in  accordance  with
management's  specific  or general  authorization;  and (z) access to its books,
records and assets is permitted only in accordance with management's  general or
specific authorization.

     3.30 Brokers. Except as disclosed in Section 3.30 of the Company Disclosure
Schedule, no broker, finder, investment banker or other Person is or will be, in
connection with the transactions contemplated by this Agreement, entitled to any
brokerage,  finder's or other fee or  compensation  based on any  arrangement or
agreement  made by or on behalf  of the  Company  and for  which  the  Surviving
Corporation or the Company will have any obligation or liability.

     3.31  Powers  of  Attorney;  Authorized  Signatories.  Section  3.31 of the
Company  Disclosure  Schedule lists:  (a) the names and addresses of all Persons
holding powers of attorney on behalf of the Company;  (b) the names of all banks
and other financial  institutions in which the Company currently has one or more
bank  accounts or safe  deposit  boxes,  along with the account  numbers and the
names of all persons  authorized  to draw on such  accounts or to have access to
such safe deposit boxes.

     3.32 Vote Required.  The  affirmative  vote of the holders of a majority of
the  outstanding  shares of Company Common Stock is the only vote of the holders
of any class or series  of  Company  capital  stock or other  voting  securities
necessary  to  approve  this   Agreement,   the  Merger  and  the   transactions
contemplated hereby.

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<PAGE>

     3.33  Fairness  Opinion.  The Company has received  the written  opinion of
Stephens  Inc.  to the  effect  that the Merger is fair to the  Company  and its
shareholders  from a  financial  point  of  view,  and as of the  date  of  this
Agreement  such  opinion  has  not  been  withdrawn,  revoked  or  modified.  In
connection  with this Agreement and any of the other  Transaction  Documents and
the transactions  contemplated herein and therein, the entire amount of fees due
and payable to Stephens Inc. shall not exceed $826,000, and the entire amount of
reimbursable expenses due and payable to Stephens Inc. shall not exceed $1,500.

     3.34 Disclosure and  Investigation.  No  representation  or warranty of the
Company set forth in this Agreement  contains any untrue statement of a material
fact or omits to state a material fact necessary in order to make the statements
contained herein not misleading.

     3.35 Real  Property.  Section 3.35 of the Company  Disclosure  Schedule (i)
sets forth a complete and accurate list of all real property, other than Oil and
Gas Interests, that is owned or leased by the Company and (ii) indicates whether
such real property contains structures, improvements or fixtures thereon.

     3.36 Expiring Acreage. Section 3.36 of the Company Disclosure Schedule sets
forth a complete and accurate list of all leasehold  acreage of the Company that
under the terms thereof would expire  before March 31, 2001,  without  action by
the Company.

     3.37 Other Fees.  In  connection  with this  Agreement and any of the other
Transaction Documents and the transactions  contemplated herein and therein, the
entire amount of fees and  reimbursable  expenses due and payable by the Company
to its  (a)  legal  counsel  shall  not  exceed  $250,000  and  (b)  independent
accountants  shall not exceed  $10,000,  except,  in the case of the independent
accountants,  as set forth in that certain letter  agreement dated September 25,
2000, between such independent accountants and the Company.

     3.38  Key  Employee  Incentive  Bonus  Plan.  The  Company's  Key  Employee
Incentive Bonus Plan has been suspended and all amounts that are due and payable
or that may become due and payable thereunder have been paid.

                                    ARTICLE 4

             REPRESENTATIONS AND WARRANTIES OF PARENT AND MERGER SUB

     Parent and Merger Sub hereby jointly and severally represent and warrant to
the Company as follows (such  representations  and warranties being deemed to be
made on a continuous basis until the Effective Time):

     4.1 Organization.  Each of the Parent Companies:  (a) is a corporation duly
organized,  validly existing and in good standing under the laws of its state of
incorporation  or formation;  (b) has the requisite  power and authority to own,
lease and operate its  properties and to conduct its business as it is presently
being  conducted;  and  (c)  is  duly  qualified  to do  business  as a  foreign


                                       33

<PAGE>

corporation,  and is in good standing,  in each jurisdiction where the character
of the properties  owned or leased by it or the nature of its  activities  makes
such  qualification  necessary (except where any failure to be so qualified as a
foreign corporation or to be in good standing would not,  individually or in the
aggregate,  have a Material  Adverse  Effect on Parent).  Accurate  and complete
copies of the  certificate or articles of  incorporation,  bylaws,  minute books
and/or  other  organizational  documents  of each of the Parent  Companies  have
heretofore been delivered to the Company.

     4.2  Authority  and  Enforceability.  Each of Parent and Merger Sub has the
requisite   corporate  power  and  authority  to  enter  into  and  deliver  the
Transaction Documents and to consummate the transactions contemplated hereby and
thereby.  The  execution  and  delivery  of the  Transaction  Documents  and the
consummation of the transactions  contemplated hereby and thereby have been duly
and validly  authorized by all necessary  corporate action on the part of Parent
and Merger Sub,  including  approval by the board of directors of Parent and the
board  of  directors  and the  sole  shareholder  of  Merger  Sub,  and no other
corporate  proceedings  on the part of  Parent or Merger  Sub are  necessary  to
authorize  the  execution  or  delivery  of  the  Transaction  Documents  or  to
consummate the  transactions  contemplated  hereby and thereby.  The Transaction
Documents have been duly and validly executed and delivered by Parent and Merger
Sub and  constitute  valid and binding  obligations of each of Parent and Merger
Sub, enforceable against each of them in accordance with their terms.

     4.3 No  Violations.  The execution and delivery of each of the  Transaction
Documents does not, and the consummation of the transactions contemplated hereby
and thereby and compliance by Parent and Merger Sub with the  provisions  hereof
and thereof will not, conflict with, result in any violation of or default (with
or  without  notice  or lapse of time or both)  under,  give  rise to a right of
termination,  cancellation or acceleration of any obligation or to the loss of a
material  benefit  under,  or result in the  creation  of any Lien on any of the
properties  or assets of Parent or Merger Sub under,  any  provision  of (a) the
certificate of incorporation,  bylaws or any other  organizational  documents of
any of the  Parent  Companies,  (b) any loan or credit  agreement,  note,  bond,
mortgage,  indenture,  lease, permit,  concession,  franchise,  license or other
agreement or instrument  applicable to Parent or Merger Sub, or (c) assuming the
consents, approvals, authorizations, permits, filings and notifications referred
to in Section 4.4 are duly and timely  obtained or made,  any  judgment,  order,
decree,  statute,  law, ordinance,  rule or regulation  applicable to any of the
Parent Companies or any of their respective properties or assets, other than, in
the case of clause  (b) or (c) above,  any such  conflict,  violation,  default,
right,  loss or Lien that,  individually  or in the aggregate,  would not have a
Material Adverse Effect on Parent.

     4.4 Consents and Approvals.  No consent,  approval,  order or authorization
of,  registration,  declaration or filing with, or permit from, any Governmental
Authority  is required by or with  respect to any Parent  Company in  connection
with the  execution  and  delivery of the  Transaction  Documents  by Parent and
Merger Sub or the  consummation  by Parent  and  Merger Sub of the  transactions
contemplated hereby and thereby, except for the following: (a) any such consent,
approval,  order,  authorization,  registration,  declaration,  filing or permit
which the failure to obtain or make would not, individually or in the aggregate,
have a Material  Adverse Effect on Parent;  (b) the filing of the Certificate of
Merger  with the  Secretary  of State of the State of  Oklahoma  pursuant to the
provisions of the OGCA;  (c) the filing with the SEC of the Proxy  Statement (in
preliminary  and  definitive  form) and such reports  under Section 13(a) of the
Exchange Act and such other  compliance with the Exchange Act and the Securities
Act and the rules and  regulations  of the SEC  thereunder as may be required in

                                       34

<PAGE>


connection  with the  Transaction  Documents and the  transactions  contemplated
hereby and  thereby and the  obtaining  from the SEC of such orders as may be so
required; (d) filings with the NASDAQ; and (e) such filings and approvals as may
be required by any  applicable  state  takeover laws or  Environmental  Laws. No
Third-Party  Consent  is  required  by or  with  respect  to any  of the  Parent
Companies in  connection  with the  execution  and  delivery of the  Transaction
Documents  or the  consummation  of the  transactions  contemplated  hereby  and
thereby, except for (x) any such Third-Party Consent which the failure to obtain
would not,  individually or in the aggregate,  have a Material Adverse Effect on
Parent and (y) the valid approval of the Company Proposal by the shareholders of
the Company.

     4.5 Interim  Operations of Merger Sub. Merger Sub was formed solely for the
purpose of engaging in the  transactions  contemplated by this Agreement and has
not engaged in any business or activity (or  conducted  any  operations)  of any
kind,  entered into any agreement or arrangement  with any person or entity,  or
incurred,  directly or indirectly,  any  liabilities or  obligations,  except in
connection with its incorporation, the negotiation of this Agreement, the Merger
and the transactions contemplated hereby.

     4.6 Financing. Parent has delivered to the Company a true and complete copy
of (i) a letter of  commitment  obtained by Parent from Fleet  National Bank and
First  Union  National  Bank to  provide  debt  financing  for the  transactions
contemplated   hereby   (collectively,   the  "Debt  Commitments")  and  (ii)  a
subscription  agreement  from each of Natural Gas  Partners V, L.P.,  C. Randall
Hill, R. Cory Richards and David C. Myers to provide  certain  equity  financing
(collectively, the "Equity Commitments" and, together with the Debt Commitments,
the "Financing  Commitments").  Executed copies of the Financing Commitments are
included as Section 4.6 of the Parent  Disclosure  Schedule.  Assuming  that the
financing contemplated by the Financing Commitments is consummated in accordance
with the terms thereof, the funds to be borrowed and/or provided thereunder will
provide sufficient funds to pay the Merger Consideration,  all other amounts due
under  Section 2.5 of this  Agreement  and all related  fees and  expenses  (the
"Financing"). As of the date of this Agreement, Parent is not aware of any facts
or  circumstances  that  create a  reasonable  basis for Parent to believe  that
Parent will not be able to obtain the Financing in accordance  with the terms of
the Financing Commitments.

     4.7 Brokers.  Except as  disclosed in Section 4.7 of the Parent  Disclosure
Schedule, no broker, finder, investment banker or other Person is or will be, in
connection with the transactions contemplated by this Agreement, entitled to any
brokerage,  finder's or other fee or  compensation  based on any  arrangement or
agreement  made by or on behalf of  Parent or Merger  Sub and for which  Parent,
Merger Sub or the Company will have any obligation or liability.

     4.8 Disclosure and  Investigation.  No representation or warranty of Parent
or Merger Sub set forth in this  Agreement  contains  any untrue  statement of a
material fact or omits to state a material  fact  necessary in order to make the
statements contained herein not misleading.

                                       35

<PAGE>

                                    ARTICLE 5

                                    COVENANTS

     5.1  Conduct of  Business  by the  Company  Pending  Closing.  The  Company
covenants and agrees with Parent that, from the date of this Agreement until the
Effective  Time,  the Company will conduct its business only in the ordinary and
usual course  consistent  with past  practices.  Notwithstanding  the  preceding
sentence,  the  Company  covenants  and  agrees  with  Parent  that,  except  as
specifically  contemplated  in this  Agreement,  from the date of this Agreement
until the Effective Time, without the prior written consent of Parent:

          (a) The Company  will not:  (i) amend its  certificate  or articles of
     incorporation,  bylaws  or  other  organizational  documents;  (ii)  split,
     combine or reclassify any of its outstanding  capital stock; (iii) declare,
     set aside or pay any dividends or other  distributions  (whether payable in
     cash,  property or  securities)  with  respect to its capital  stock;  (iv)
     issue,  sell or  agree to issue  or sell  any  securities  or other  equity
     interests,  including its capital stock (including  shares of capital stock
     held as treasury  shares),  any rights,  options or warrants to acquire its
     capital  stock,   or  securities   convertible   into  or  exchangeable  or
     exercisable  for its capital  stock  (other  than shares of Company  Common
     Stock issued pursuant to the exercise of any Company Option  outstanding on
     the date of this  Agreement);  (v)  purchase,  cancel,  retire,  redeem  or
     otherwise acquire any of its outstanding  capital stock or other securities
     or other equity interests;  (vi) merge or consolidate with, or transfer all
     or substantially  all of its assets to, any other Person;  (vii) liquidate,
     wind-up or dissolve (or suffer any liquidation or  dissolution);  or (viii)
     enter into any contract, agreement,  commitment or arrangement with respect
     to any of the foregoing.

          (b) The Company will not: (i) acquire any corporation,  partnership or
     other  business  entity  or any  interest  therein;  (ii)  sell,  lease  or
     sublease, transfer, farm out or otherwise dispose of or mortgage, pledge or
     otherwise  encumber  any Oil and Gas  Interests  of the  Company  that were
     assigned  a  Reserve  Data  Value in excess of  $25,000  in the  aggregate,
     (except that this clause shall not apply to the sale of Hydrocarbons in the
     ordinary course of business pursuant to existing arrangements and contracts
     or to encumbrances under the Company Bank Credit Agreement);  (iii) acquire
     any Oil and Gas Interests or any other assets that have a value at the time
     of such  acquisition  in excess of $25,000 in the  aggregate  (except  that
     other assets with an aggregate  purchase  price of no more than $25,000 may
     be acquired that are incidental to the business of the Company and acquired
     in the ordinary course of the business of the Company  consistent with past
     practices); (iv) enter into any hedging or derivative contracts (financial,
     commodity or otherwise) other than the hedging program set forth in Exhibit
     E; (v) sell,  transfer  or  otherwise  dispose  of or  mortgage,  pledge or
     otherwise encumber any securities of any other Person; (vi) make any loans,
     advances or capital  contributions to, or investments in, any Person; (vii)
     enter into any  agreement  (including  the  proposal for or approval of any
     authority for  expenditure) or series of related  agreements or authorities
     for  expenditure  that would cause the Company to spend more than $5,000 or
     any other agreement not terminable by the Company upon notice of 30 days or
     less and without penalty or other obligation;  (viii) agree with any Person
     to limit or otherwise  restrict in any manner the ability of the Company to
     compete or otherwise conduct its business, or (ix) enter into any contract,
     agreement, commitment or arrangement with respect to any of the foregoing.

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<PAGE>

          (c) The Company  will not:  (i) incur any  indebtedness  for  borrowed
     money;  (ii) incur any cost or expense for leasehold or  geophysical  items
     including acquisition,  processing,  reprocessing or interpretation;  (iii)
     incur any other obligation or liability (other than liabilities incurred in
     the ordinary course of business consistent with past practices);  (iv) make
     a capital  expenditure or series of related capital  expenditures in excess
     of $5,000 except in connection with those  authorities for expenditures set
     forth in  Section  5.1(c) of the  Company  Disclosure  Schedule  (provided,
     however,  that  nothing  herein  shall  prohibit the Company from paying or
     prepaying any indebtedness  under the Company Bank Credit  Agreement);  (v)
     assume,  endorse (other than endorsements of negotiable  instruments in the
     ordinary  course of  business),  guarantee  or otherwise  become  liable or
     responsible   (whether   directly,   contingently  or  otherwise)  for  the
     liabilities  or  obligations  of any other  Person;  or (vi) enter into any
     contract,  agreement,  commitment or arrangement with respect to any of the
     foregoing.

          (d) The Company will operate, maintain and otherwise deal with the Oil
     and Gas  Interests of the Company in  accordance  with good and prudent oil
     and gas field  practices and in accordance  with all applicable oil and gas
     leases and other  contracts and agreements and all applicable  laws,  rules
     and regulations.

          (e) The Company  will not resign,  transfer or  otherwise  voluntarily
     relinquish any right it has as of the date of this  Agreement,  as operator
     of any Oil and Gas Interest of the Company.

          (f) The Company will not: (i) enter into,  or otherwise  become liable
     or obligated  under or pursuant to, (1) any  employee  benefit,  pension or
     other plan  (whether or not subject to ERISA),  (2) any other stock option,
     stock purchase,  incentive or deferred  compensation plan or arrangement or
     other fringe  benefit  plan,  (3) any  consulting,  employment,  severance,
     bonus,  termination  or  similar  agreement  with  any  Person,  or (4) any
     amendment or extension of any such plan,  arrangement  or  agreement;  (ii)
     except for payments made pursuant to any existing  Company Employee Benefit
     Plan or any other  plan,  agreement  or  arrangement  described  in Section
     3.17(a) of the Company  Disclosure  Schedule,  grant,  or otherwise  become
     liable for or obligated to pay, any severance or termination payment, bonus
     or increase in compensation or benefits to, or forgive any indebtedness of,
     any employee or  consultant  of the Company;  (iii) enter into or amend any
     Company  Material  Agreements or (iv) enter into any  contract,  agreement,
     commitment or arrangement to do any of the foregoing.

          (g) The Company will not create,  incur, assume or permit to exist any
     Lien on any of its assets, except for Permitted Encumbrances.

          (h) The Company will: (i) keep and maintain  accurate  books,  records
     and  accounts;  (ii)  maintain  in full force and effect  the  policies  or
     binders  of  insurance  described  in  Section  3.21;  (iii) pay all Taxes,
     assessments and other  governmental  charges imposed upon any of its assets
     or with respect to its  franchises,  business,  income or assets before any
     penalty or  interest  accrues  thereon;  (iv) pay all  claims and  expenses
     (including claims and expenses for labor, services, materials and supplies)
     when they become due and payable in  accordance  with their terms;  and (v)
     comply in all material  respects with the  requirements  of all  applicable
     laws, rules,  regulations and orders of any Governmental Authority,  obtain
     or  take  all  Governmental  Actions  necessary  in  the  operation  of its
     business,  and  comply  with and  enforce  the  provisions  of all  Company

                                       37

<PAGE>


     Material Agreements, including paying when due all indebtedness,  payables,
     rentals, royalties, expenses and other liabilities relating to its business
     or assets.

          (i) The Company will at all times  preserve and keep in full force and
     effect its corporate  existence and rights and  franchises  material to its
     performance under this Agreement.

          (j) The Company  will not engage in any  practice,  take any action or
     permit by inaction any of the representations  and warranties  contained in
     Article 3 to become untrue.

          (k) The Company shall carry on its  businesses  in the usual,  regular
     and  ordinary  course  in  substantially  the  same  manner  as  heretofore
     conducted  and shall use all  commercially  reasonable  efforts to preserve
     intact its present business  organizations,  keep available the services of
     its current  officers and employees  (provided,  however,  that the Company
     will not hire any  additional  employees)  and  endeavor  to  preserve  its
     relationships with customers, suppliers and others having business dealings
     with it to the end that its  goodwill  and  ongoing  business  shall not be
     impaired in any material respect at the Effective Time.

          (l) The Company will not engage in any line of business in which it is
     not engaged as of the date hereof.

          (m) The Company will not, directly or indirectly, enter into or permit
     to exist any transaction (including the purchase,  sale, lease, or exchange
     of any assets,  unless otherwise  permitted hereby, or the rendering of any
     service)  with any  Affiliate  of the Company,  other than  pursuant to the
     Company Employee Benefit Plans in effect as of the date hereof and business
     expense advancements or reimbursements in the ordinary course of business.

          (n) Other than the Stock Voting Agreements, the Company will not enter
     into, or otherwise be a party to, any agreement or  understanding  relating
     to the voting,  registration or transfer of any shares of its capital stock
     or other securities.

     5.2 Access to Assets, Personnel and Information.

          (a) From the date hereof until the Effective  Time, the Company shall:
     (i) afford to Parent and the Parent Representatives,  at Parent's sole risk
     and  expense,  reasonable  access to any of the assets,  books and records,
     contracts,  employees,  representatives,   agents  and  facilities  of  the
     Company;  (ii) provide to Parent all information  which pertains to matters
     requiring  Parent's approval under Section 5.1 and cooperate with Parent to
     institute  procedures  and  practices to facilitate  the joint  approval by
     Parent  and the  Company  of such  matters;  (iii)  upon  request,  furnish
     promptly to Parent (at Parent's expense) a copy of any file, book,  record,
     contract, permit, correspondence, or other written information, document or
     data  concerning  the  Company  (or any of its  assets)  that is within the
     possession or control of the Company;  and (iv) consent to its  independent
     auditors  to make  available  their  work  papers to Parent  and the Parent
     Representatives   as  permitted  by  the  applicable   AICPA   Professional
     Standards.

          (b) Parent and the Parent Representatives shall, at Parent's sole risk
     and  expense,  have  the  right  to  make  an  environmental  and  physical
     assessment of the assets of the Company and, in connection therewith, shall


                                       38

<PAGE>

     have the right to enter and  inspect  such  assets  and all  buildings  and
     improvements  thereon,  conduct  soil  and  water  tests  and  borings  and
     generally conduct such tests,  examinations,  investigations and studies as
     Parent deems  necessary,  desirable or appropriate  for the  preparation of
     engineering or other reports  relating to such assets,  their condition and
     the presence of Hazardous Materials and compliance with Environmental Laws.
     The Company  shall be provided not less than 24 hours' prior notice of such
     activities, and the Company Representatives shall have the right to witness
     all such tests and investigations. Parent shall (and shall cause the Parent
     Representatives  to)  keep  any data or  information  acquired  by any such
     examinations  and the results of any analyses of such data and  information
     strictly   confidential   and  will  not  (and  will   cause   the   Parent
     Representatives  not to) disclose any of such data,  information or results
     to any Person unless otherwise  required by law or regulation and then only
     after written  notice to the Company of the  determination  of the need for
     disclosure.  Parent  shall  indemnify,  defend and hold the Company and the
     Company Representatives harmless from and against any and all claims to the
     extent  arising out of or as a result of the  activities  of Parent and the
     Parent  Representatives  on the assets of the  Company in  connection  with
     conducting such environmental and physical assessment, except to the extent
     of and limited by the  negligence  or willful  misconduct of the Company or
     any Company Representative.

          (c) From the date hereof until the  Effective  Time,  the Company will
     fully and accurately disclose to Parent and the Parent  Representatives all
     information that is (i) reasonably requested by Parent or any of the Parent
     Representatives,  (ii)  known to the  Company,  and (iii)  relevant  in any
     manner or degree to the value,  ownership,  use, operation,  development or
     transferability  of the assets of the Company or financing of the Merger by
     Parent.

          (d) From the date hereof until the Effective  Time, the Company shall:
     (i)  furnish to Parent,  promptly  upon  receipt or filing (as the case may
     be), a copy of each communication between the Company and the SEC after the
     date hereof  relating to the Merger or the Proxy Statement and each report,
     schedule,  proxy  statement or other document filed by the Company with the
     SEC after the date hereof  relating  to the Merger or the Proxy  Statement;
     and (ii) promptly advise Parent of the substance of any oral communications
     with the SEC relating to the Merger or the Proxy Statement.

          (e) The Company will (and will cause the Company  Representatives  to)
     fully  cooperate  in all  reasonable  respects  with  Parent and the Parent
     Representatives in connection with Parent's  examinations,  evaluations and
     investigations described in this Section 5.2.

          (f)  Parent  will  not  (and  will  cause  Merger  Sub and the  Parent
     Representatives  not to)  use any  information  obtained  pursuant  to this
     Section  5.2  for  any  purpose   unrelated  to  the  consummation  of  the
     transactions contemplated by this Agreement.

          (g) Notwithstanding  anything in this Section 5.2 to the contrary, the
     Company  shall not be  obligated  under the  terms of this  Section  5.2 to
     disclose to Parent or the Parent  Representatives,  or grant  Parent or the
     Parent Representatives access to, information that is within the possession
     or  control  of  the   Company   but   subject  to  a  valid  and   binding
     confidentiality  agreement  with a third party without first  obtaining the

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<PAGE>


     consent of such third  party,  and the  Company,  to the extent  reasonably
     requested  by Parent,  will use its  reasonable  best efforts to obtain any
     such consent.

     5.3 No Solicitation.

          (a) From and after the date hereof, the Company will not, and will not
     authorize  or permit any of the  Company  Representatives  to,  directly or
     indirectly,   solicit  or   encourage   (including   by  way  of  providing
     information)  any  prospective  acquiror or the invitation or submission of
     any  inquiries,  proposals or offers or any other  efforts or attempts that
     constitute,  or may  reasonably  be  expected  to lead to, any  Acquisition
     Proposal  (as  hereinafter  defined)  from  any  Person  or  engage  in any
     discussions or  negotiations  with respect  thereto or otherwise  cooperate
     with or  assist  or  participate  in,  or  facilitate  any  such  proposal;
     provided,  however,  that  notwithstanding  any  other  provision  of  this
     Agreement,  (i) the  Company's  Board of Directors may take and disclose to
     the  shareholders  of the Company a position  contemplated by Rule 14e-2(a)
     promulgated under the Exchange Act and (ii) to the extent that the Board of
     Directors of the Company  determines in good faith,  after  considering the
     advice of its legal counsel,  that such action is required in order for the
     Board of  Directors of the Company to act in a manner  consistent  with its
     fiduciary   duties  under   applicable  law  and  solely  for  purposes  of
     determining  whether or not to rescind or modify the  recommendation of the
     Board of Directors of the Company  contemplated by Section 5.5, the Company
     and the Company Representatives,  in response to an unsolicited Acquisition
     Proposal,  may enter  into  discussions  or  negotiations  with the  Person
     presenting  such  Acquisition  Proposal  and  provide  information  to such
     Person;   provided  that  prior  to  entering  into  such   discussions  or
     negotiations or providing any such information the Company shall enter into
     a customary  confidentiality agreement with such Person containing terms no
     more  favorable  to  such  Person  than  contained  in the  Confidentiality
     Agreement.  The Company shall  immediately cease and cause to be terminated
     any existing solicitation,  initiation, encouragement, activity, discussion
     or negotiation with any parties conducted  heretofore by the Company or any
     of the Company's  Representatives with respect to any Acquisition Proposal.
     The Company will  promptly  notify in writing  Parent of any receipt by the
     Company or any of the  Company  Representatives  of a request  from a third
     party for information  concerning the Company and its business,  properties
     and  assets or the  receipt  of any  Acquisition  Proposal,  including  the
     identity of the person or group  requesting such information or making such
     Acquisition  Proposal,  and  the  material  terms  and  conditions  of  any
     Acquisition Proposal.

          (b) As  used in  this  agreement,  "Acquisition  Proposal"  means  any
     proposal  or offer,  other than a proposal or offer by Parent or any of its
     Affiliates,  for, or that could be reasonably expected to lead to, a tender
     or exchange offer, a merger,  consolidation  or other business  combination
     involving  the  Company  or  any  proposal  to  acquire  in  any  manner  a
     substantial  equity interest in, or any  substantial  portion of the assets
     of, the Company.

          (c) Nothing in this  Section 5.3 shall permit the Company to terminate
     this Agreement except as specifically provided in Section 7.1.

     5.4  Third-Party  Standstill  Agreements.  During the period  from the date
hereof  through the  Effective  Time,  the Company shall not  terminate,  amend,

                                       40

<PAGE>

modify or waive any provision of the Rights Agreement or of any  confidentiality
or standstill  agreement to which the Company is a party,  except for the Rights
Agreement Amendment.

     5.5  Shareholders  Meeting.  The Company shall take all action necessary in
accordance with applicable law and its certificate of  incorporation  and bylaws
to convene a meeting of its  shareholders  as promptly as practicable  after the
date hereof for the purpose of voting on the  Company  Proposal.  Subject to the
fiduciary  duties of the Board of  Directors of the Company and Section 5.3, the
Company will  (through  its Board of  Directors)  recommend to its  shareholders
approval of the Company  Proposal and not rescind or modify such  recommendation
and shall use its reasonable best efforts to obtain approval and adoption of the
Company Proposal by its shareholders. If, however, the Board of Directors of the
Company rescinds or modifies such recommendation pursuant to the first clause of
the immediately  preceding sentence,  the Company Proposal shall be submitted to
the Company's shareholders.

     5.6 Proxy Statement.

          (a) The  Company and Parent  shall  cooperate  and the  Company  shall
     promptly  prepare  the Proxy  Statement  to enable the  Company to file the
     Proxy  Statement with the SEC, as preliminary  proxy  material,  as soon as
     practicable  after the date  hereof and in any event not later than 20 days
     after the date hereof.  The Company shall use all reasonable  best efforts,
     and Parent  shall  cooperate  with the Company  (including  furnishing  all
     information  concerning  Parent  as  may  be  reasonably  requested  by the
     Company),  to have the Proxy  Statement  cleared by the SEC as  promptly as
     practicable  after  such  filing  and to mail the  Proxy  Statement  to the
     Company's  shareholders as soon as possible  thereafter.  The Company shall
     use all  reasonable  best  efforts,  and Parent  shall  cooperate  with the
     Company,  to  obtain  any  necessary  state   anti-takeover   approvals  in
     connection with the Merger.

          (b) The  Company  will  cause the Proxy  Statement,  at the time it is
     first mailed to  shareholders  of the Company,  to comply as to form in all
     material respects with the applicable provisions of the Securities Act, the
     Exchange Act and the rules and regulations of the SEC thereunder.

          (c) The Company hereby covenants and agrees with Parent that the Proxy
     Statement  (at the time it is first mailed to  shareholders  of the Company
     and at the  time  of the  Company  Meeting)  will  not  contain  an  untrue
     statement of a material  fact or omit to state a material  fact required to
     be stated therein or necessary in order to make the statements  therein, in
     light of the  circumstances  under  which  they are  made,  not  misleading
     (provided,  however,  that this clause (c) shall apply only to  information
     contained  in the Proxy  Statement  that was  supplied  by the  Company for
     inclusion therein). If, at any time prior to the Company Meeting, any event
     with respect to the Company, or with respect to other information  supplied
     by the Company for inclusion in the Proxy Statement,  occurs and such event
     is required to be  described in a supplement  to the Proxy  Statement,  the
     Company shall promptly  notify Parent of such occurrence and shall promptly
     prepare, file and disseminate such supplement.

          (d) Parent hereby covenants and agrees with the Company that the Proxy
     Statement  (at the time it is first mailed to  shareholders  of the Company
     and at the  time  of the  Company  Meeting)  will  not  contain  an  untrue

                                       41

<PAGE>


     statement of a material  fact or omit to state a material  fact required to
     be stated therein or necessary in order to make the statements  therein, in
     light of the  circumstances  under  which  they are  made,  not  misleading
     (provided,  however,  that this  clause (d) shall not apply to  information
     contained  in the Proxy  Statement  that was  supplied  by the  Company for
     inclusion therein). If, at any time prior to the Company Meeting, any event
     with respect to Parent,  or with respect to other  information  supplied by
     Parent  for  inclusion  in the Proxy  Statement,  occurs  and such event is
     required to be  described in a supplement  to the Proxy  Statement,  Parent
     shall promptly  notify the Company of such  occurrence and shall  cooperate
     with the  Company  in the  preparation,  filing and  dissemination  of such
     supplement.

          (e)  Neither  the Proxy  Statement  nor any  amendment  or  supplement
     thereto will be filed or  disseminated  to the  shareholders of the Company
     without  the  approval of both Parent and the  Company.  The Company  shall
     advise Parent,  promptly after it receives notice thereof, of the time when
     the  Proxy  Statement  has been  cleared  by the SEC,  or any  comments  or
     requests for additional  information  received from the SEC, whether orally
     or in writing, with respect to the Proxy Statement.

     5.7 Additional  Arrangements.  Subject to the terms and  conditions  herein
provided,  each of the Company and Parent shall take, or cause to be taken,  all
action and shall do, or cause to be done, all things  necessary,  appropriate or
desirable  under  any  applicable  laws  and  regulations  or  under  applicable
governing   agreements  to  consummate  and  make  effective  the   transactions
contemplated by this Agreement, including using all reasonable efforts to obtain
all  necessary  waivers,  consents and  approvals  and  effecting  all necessary
registrations  and filings.  Each of the Company and Parent shall take, or cause
to be taken, all action or shall do, or cause to be done, all things  necessary,
appropriate or desirable to cause the covenants and conditions applicable to the
transactions  contemplated  hereby  to be  performed  or  satisfied  as  soon as
practicable.  In addition,  if any Governmental  Authority shall have issued any
order, decree,  ruling or injunction,  or taken any other action that would have
the effect of restraining,  enjoining or otherwise prohibiting or preventing the
consummation of the transactions  contemplated  hereby,  each of the Company and
Parent shall use its reasonable best efforts to have such order, decree,  ruling
or injunction or other action declared ineffective as soon as practicable.

     5.8 Public Announcements. Prior to the Closing, the Company and Parent will
consult with each other before issuing any press release or otherwise making any
public statement with respect to the transactions contemplated by this Agreement
and shall not issue any such  press  release or make any such  public  statement
prior to obtaining the approval of the other Party,  which approval shall not be
unreasonably  withheld;  provided,  however,  that  such  approval  shall not be
required  where such release or  announcement  is required by applicable  law or
exchange or NASDAQ rule or  regulation;  and provided  further,  that either the
Company or Parent may respond to inquiries by the press or others  regarding the
transactions  contemplated  by this  Agreement,  so long as such  responses  are
consistent with such Party's previously issued press releases.

     5.9 Notification of Certain  Matters.  The Company shall give prompt notice
to Parent of any of the following:  (a) any representation or warranty contained
in Article 3 being untrue or  inaccurate  when made;  (b) the  occurrence of any


                                       42

<PAGE>

event or development that would cause (or could reasonably be expected to cause)
any representation or warranty contained in Article 3 to be untrue or inaccurate
on the  Closing  Date;  and (c) any  failure of the  Company  to comply  with or
satisfy any covenant, condition or agreement to be complied with or satisfied by
it  hereunder.  Parent  shall give  prompt  notice to the  Company of any of the
following:  (x) any  representation  or  warranty  contained  in Article 4 being
untrue or inaccurate  when made;  (y) the occurrence of any event or development
that would cause (or could  reasonably be expected to cause) any  representation
or warranty  contained  in Article 4 to be untrue or  inaccurate  on the Closing
Date;  and (z) any  failure of Parent to comply  with or satisfy  any  covenant,
condition or agreement to be complied with or satisfied by it hereunder.

     5.10 Payment of Expenses. Each Party shall pay its own expenses incident to
preparing   for,   entering  into  and  carrying  out  this  Agreement  and  the
consummation of the transactions  contemplated hereby, whether or not the Merger
shall be consummated. The Company shall bear and pay: (a) the fee for filing the
Proxy Statement with the SEC and the costs and expenses associated with printing
the Proxy Statement and complying with any applicable  state securities or "blue
sky" laws;  and (b) the costs and  expenses  associated  with  mailing the Proxy
Statement to the  shareholders  of the Company,  and soliciting the votes of the
shareholders of the Company.

     5.11 Indemnification and Insurance.

          (a) Parent and the  Company  agree that all rights to  indemnification
     now existing in favor of any officers,  directors,  employees,  controlling
     shareholders  or agents of the  Company,  as  provided  in its  charters or
     bylaws   (or   similar   organizational   documents),   and  any   existing
     indemnification  agreements or arrangements  of the Company,  shall survive
     the Merger and shall  continue in full force and effect for a period of not
     less than six years from the  Effective  Time (or such longer period as may
     be provided in any existing indemnification  agreement between the Company,
     and any current or former officer or director thereof);  provided, that, in
     the event any claim or claims are  asserted or made  within  such  six-year
     period,  all  rights to  indemnification  in  respect  of any such claim or
     claims shall continue until final disposition of any and all such claims.

          (b) From and after  the  Effective  Time,  the  Surviving  Corporation
     shall,  for a period of six  years  after the  Effective  Time,  indemnify,
     defend and hold  harmless  each  person who is now, or has been at any time
     prior to the date of this  Agreement or who becomes  prior to the Effective
     Time, an officer, director,  employee,  controlling shareholder or agent of
     the Company  (collectively,  the "Indemnified Parties") against all losses,
     expenses  (including  attorneys' fees),  claims,  damages,  liabilities and
     amounts that are paid in settlement  with the approval of the  indemnifying
     party (which approval shall not be unreasonably  withheld) of, or otherwise
     in  connection  with,  any  threatened  or  actual  claim,   action,  suit,
     proceeding or  investigation  (a "Claim"),  based in whole or in part on or
     arising in whole or in part out of the fact that the Indemnified  Party (or
     the  person  controlled  by the  Indemnified  Party) is or was a  director,
     officer,  employee,   controlling  shareholder  or  agent  of  the  Company
     (including a trustee or fiduciary of any Company Employee Benefit Plan) and
     pertaining  to any matter  existing or arising out of actions or  omissions
     occurring at or prior to the Effective  Time  (including  any Claim arising
     out of this  Agreement  or any of the  transactions  contemplated  hereby),
     whether  asserted or claimed prior to, at or after the  Effective  Time, in
     each case to the fullest extent permitted under Oklahoma law, and shall pay
     any expenses,  as incurred, in advance of the final disposition of any such
     action  or  proceeding  to each  Indemnified  Party to the  fullest  extent

                                       43

<PAGE>


     permitted under Oklahoma law. In determining  whether an Indemnified  Party
     is entitled to  indemnification  under this Section  5.11,  if requested by
     such  Indemnified  Party,  such  determination  shall  be made by  special,
     independent  counsel selected by the Surviving  Corporation and approved by
     the Indemnified Party (which approval shall not be unreasonably  withheld),
     and who has not otherwise performed services for the Surviving  Corporation
     or any of its  Affiliates  within  the  last  three  years  (other  than in
     connection with such matters). Without limiting the foregoing, in the event
     any such Claim is brought against any Indemnified Party or Parties (whether
     arising before or after the Effective Time): (i) such Indemnified  Party or
     Parties  may  retain  the   Surviving   Corporation's   regularly   engaged
     independent  legal counsel or counsel  satisfactory  to them and reasonably
     satisfactory to the Surviving  Corporation,  and the Surviving  Corporation
     shall  pay  all  reasonable  fees  and  expenses  of such  counsel  for the
     Indemnified  Party or  Parties  as  promptly  as  statements  therefor  are
     received;  and (ii) the Surviving  Corporation will use all reasonable best
     efforts to assist in the vigorous defense of any such matter, provided that
     the Surviving  Corporation shall not be liable for any settlement  effected
     without its prior written consent,  which consent shall not unreasonably be
     withheld. In the event of any Claim, any Indemnified Party wishing to claim
     indemnification  will  promptly  notify the Surviving  Corporation  thereof
     (provided,  that failure to so notify the  Surviving  Corporation  will not
     affect the  obligations of the Surviving  Corporation  except to the extent
     that the Surviving  Corporation  shall have been  prejudiced as a result of
     such  failure)  and  shall  deliver  to  the  Surviving   Corporation   the
     undertaking  contemplated  by Section  1031 of the OGCA,  but  without  any
     requirement for the posting of a bond.  Without limiting the foregoing,  in
     the event any such Claim is brought against any of the Indemnified Parties,
     such  Indemnified  Party or Parties  may retain only one law firm (plus one
     local  counsel,  if necessary) to represent  them with respect to each such
     matter  unless  the use of  counsel  chosen to  represent  the  Indemnified
     Parties  would  present such  counsel  with a conflict of interest,  or the
     representation of all of the Indemnified  Parties by the same counsel would
     be inappropriate  due to actual or potential  differing  interests  between
     them, in which case such additional counsel as may be required (as shall be
     reasonably   determined  by  the  Indemnified  Parties  and  the  Surviving
     Corporation)  may be  retained by the  Indemnified  Parties at the cost and
     expense of the Surviving  Corporation and the Surviving  Corporation  shall
     pay all reasonable  fees and expenses of such counsel for such  Indemnified
     Parties.  The  Surviving  Corporation  shall  use  such  counsel  for  such
     Indemnified  Parties.  The Surviving  Corporation  shall use all reasonable
     best efforts to assist in the vigorous defense of any such Claim; provided,
     that the  Surviving  Corporation  shall  not be liable  for any  settlement
     effected without its written consent, which consent,  however, shall not be
     unreasonably withheld.  Notwithstanding the foregoing, nothing contained in
     this  Section  5.11  shall be deemed to grant any right to any  Indemnified
     Party  which  is not  permitted  to be  granted  to an  officer,  director,
     employee,  controlling  shareholder  or agent of the Company under Oklahoma
     law,   assuming  for  such  purposes   that  the  Surviving   Corporation's
     certificate   of   incorporation   and  bylaws   provide  for  the  maximum
     indemnification permitted by law.

          (c) From and after the Effective Time, the Surviving Corporation shall
     cause to be  maintained  in effect  for not less  than six  years  from the
     Effective  Time  the  current  policies  of the  directors'  and  officers'
     liability  insurance  maintained by the Company;  provided,  that:  (i) the
     Surviving Corporation may substitute therefor policies of at least the same

                                       44

<PAGE>


     coverage  containing terms and conditions  which are no less  advantageous;
     (ii) such substitution  shall not result in gaps or lapses in coverage with
     respect to matters  occurring  prior to the Effective  Time;  and (iii) the
     Surviving  Corporation  shall not be required  to pay an annual  premium in
     excess of 200% of the last annual  premium paid by the Company prior to the
     date  hereof  and if the  Surviving  Corporation  is unable  to obtain  the
     insurance  required  by  this  Section  5.11(c)  it  shall  obtain  as much
     comparable  insurance  as  possible  for an  annual  premium  equal to such
     maximum amount.

          (d) Following the Merger,  if the Surviving  Corporation or any of its
     successors or assigns (i) consolidates with or merges into any other Person
     and shall not be the continuing or surviving  corporation or entity of such
     consolidation or merger,  or (ii) transfers or conveys all or substantially
     all of its  properties  and assets to any Person or Persons,  then,  and in
     each such case,  proper  provision shall be made so that the successors and
     assigns  of the  Surviving  Corporation  and any of  their  successors  and
     assigns,   assume  the   obligations  of  the  Parties  and  the  Surviving
     Corporation set forth in this Section 5.11.

          (e) This Section 5.11 shall survive the  consummation of the Merger at
     the Effective  Time, is intended to benefit the Surviving  Corporation  and
     the  Indemnified  Parties and their  respective  heirs and  representatives
     (each of whom may enforce the provisions of this Section 5.11) and shall be
     binding on the successors and assigns of the Surviving Corporation.

     5.12 Shareholder  Litigation.  The Company shall give Parent the reasonable
opportunity  to  participate  in the defense or  settlement  of any  shareholder
litigation against the Company and/or its directors relating to the transactions
contemplated  by this  Agreement,  and no such  settlement  shall be  agreed  to
without Parent's written  consent,  which shall not be unreasonably  withheld or
delayed.

     5.13 Opinion of Financial Advisor. A true, correct and complete copy of the
written opinion  delivered by Stephens Inc. as set forth in Section 3.33,  which
opinion shall be included in the Proxy  Statement,  has been delivered to Parent
by the Company.

     5.14 Resignations of Officers and Directors of the Company. As requested by
Parent, prior to the Closing Date, the Company shall obtain written resignations
from each of its officers and directors under which such persons shall resign as
an officer and/or director of the Company effective as of the Effective Time.

     5.15 Other  Agreements.  Concurrently with the execution of this Agreement,
the  Company  is  delivering  to Parent  executed  copies  of the  Stock  Voting
Agreements, the Separation Agreements and the Rights Agreement Amendment.

     5.16 Option Surrender Agreements. The Company shall use its reasonable best
efforts to cause each holder of a Company Option to execute an Option  Surrender
Agreement prior to the Effective Time.

     5.17 Financing.  Parent shall immediately notify the Company (a) should any
of the Financing  Commitments be terminated by any party thereto, (b) should any
party purport to terminate any of the  Financing  Commitments  or (c) should any
other event occur which causes Parent to reasonably  believe that it will not be
able to obtain the Financing, (a "Financing Termination Notice").

                                       45

<PAGE>



     5.18  Separation  Agreements.  The Company  shall not amend,  terminate  or
otherwise modify the Separation  Agreements without the prior written consent of
Parent.

     5.19  Retirement  Agreement.  Within  30 days  after the date  hereof,  the
Company shall either  provide Parent with a copy of the filing  originally  made
with the Department of Labor for the May 31, 1989 Agreement with William G. Seal
(the "Seal  Agreement"),  as required by Department of Labor Regulation  Section
2520.104-23 or, if no such filing was originally  made, the Company shall comply
with  the  Pension  and  Welfare  Benefits  Administration's   Delinquent  Filer
Voluntary Compliance Program with respect to the Seal Agreement (including,  but
not limited to,  making all filings and paying all  applicable  penalties  under
such program),  and shall provide  Parent with a copy of all documents  filed in
connection with such program.

     5.20  Deferred  Compensation  Agreements.  Within  30 days  after  the date
hereof,  the  Company  shall  either  provide  Parent with a copy of the filings
originally  made  with the  Department  of Labor for the  Deferred  Compensation
Agreements  with O.  Strother  Simpson  for the  years  1980  through  1989 (the
"Strother  Agreements"),  as required by Department of Labor Regulation  Section
2520.104-23  or, if no such  filings were  originally  made,  the Company  shall
comply with the Pension and Welfare Benefits  Administration's  Delinquent Filer
Voluntary Compliance Program with respect to the Strother Agreements (including,
but not limited to, making all filings and paying all applicable penalties under
such program),  and shall provide  Parent with a copy of all documents  filed in
connection with such program.


                                    ARTICLE 6

                                   CONDITIONS

     6.1  Conditions  to Each  Party's  Obligation  to Effect  the  Merger.  The
respective  obligations  of each Party to effect the Merger  shall be subject to
the satisfaction,  at or prior to the Closing Date, of the following conditions,
any or all of which  may be waived  in whole or in part by both  Parent  and the
Company:

          (a) Shareholder  Approval.  The Company  Proposal shall have been duly
     and validly approved and adopted by a vote of a majority of the outstanding
     shares of Company Common Stock.

          (b)  Other   Approvals.   All   consents,   approvals,   permits   and
     authorizations required to be obtained prior to the Effective Time from any
     Governmental Authority or other Person in connection with the execution and
     delivery  of  this  Agreement  and  the  consummation  of the  transactions
     contemplated  hereby by the Company,  Parent and Merger Sub shall have been
     made or obtained  (as the case may be),  except where the failure to obtain
     such  consents,   approvals,   permits  and  authorizations  would  not  be
     reasonably  likely to result in a Material  Adverse Effect on Parent or the
     Company or to materially adversely affect the consummation of the Merger.

          (c) No  Injunctions  or Restraints.  No temporary  restraining  order,
     preliminary  or permanent  injunction or other order issued by any court of

                                       46

<PAGE>


     competent  jurisdiction or other legal restraint or prohibition  preventing
     the consummation of the Merger shall be in effect; provided, however, that,
     prior to invoking this  condition,  the invoking  Party shall have complied
     fully with its  obligations  under Section 5.7 and, in addition,  shall use
     all reasonable best efforts to have any such decree, ruling,  injunction or
     order vacated.

     6.2 Conditions to Obligations of Parent and Merger Sub. The  obligations of
Parent and Merger Sub to effect the Merger are  subject to the  satisfaction  of
the following conditions,  any or all of which may be waived in whole or in part
by Parent and Merger Sub:

          (a) Representations and Warranties. The representations and warranties
     of the Company set forth in this Agreement shall be true and correct in all
     material respects  (provided that any  representation or warranty contained
     herein that is qualified by a  materiality  standard or a Material  Adverse
     Effect  qualification  shall not be  further  qualified  hereby)  as of the
     Closing Date (except to the extent such  representation  or warranty speaks
     as of an earlier date), and Parent shall have received a certificate signed
     by a Responsible Officer of the Company to such effect.

          (b)  Performance  of Covenants  and  Agreements  by the  Company.  The
     Company  shall have  performed in all material  respects all  covenants and
     agreements  required to be performed by it under this Agreement at or prior
     to the Closing Date, and Parent shall have received a certificate signed by
     a Responsible Officer of the Company to such effect.

          (c) No Material Adverse Effect. Since June 30, 2000, the Company shall
     not have suffered or incurred any Material Adverse Effect.

          (d)  Dissenters'  Rights.  The  aggregate  number of shares of Company
     Common  Stock,  which are  entitled to vote at the Company  Meeting and are
     held of record by a Person or Persons who exercise  their  appraisal  right
     under the OGCA to dissent from the proposed  Merger,  shall not exceed five
     percent  (5%) of the  total  number  of issued  and  outstanding  shares of
     Company  Common  Stock held of record as of the record date for the Company
     Meeting and entitled to vote on the proposed Merger at such meeting.

          (e) Debt Commitment Condition. The closing conditions set forth in the
     penultimate  sentence  of the fourth  paragraph,  insofar as they relate to
     title of oil and gas  interests  of the Company and  environmental  matters
     with respect thereto,  of the Fleet National Bank commitment letter,  dated
     September 7, 2000, which letter is included in the Debt Commitments,  shall
     have been fulfilled as provided for in the Debt Commitments.

          (f) Material Representations.  Each of the Material Representations is
     true and  correct in all  respects as of the  Closing  Date  (except to the
     extent such  representation  or warranty  speaks as of an earlier date) and
     Parent  shall have a  certificate  signed by a  Responsible  Officer of the
     Company to such effect.

          (g)  Resignations  of Officers and  Directors  of the Company.  Parent
     shall have received the written resignations contemplated by Section 5.14.

                                       47

<PAGE>

     6.3 Conditions to Obligation of the Company.  The obligation of the Company
to effect the Merger is subject to the satisfaction of the following conditions,
any or all of which may be waived in whole or in part by the Company:

          (a) Representations and Warranties. The representations and warranties
     of Parent  and  Merger  Sub set forth in this  Agreement  shall be true and
     correct in all  material  respects  (provided  that any  representation  or
     warranty contained herein that is qualified by a materiality  standard or a
     Material  Adverse  Effect  qualification  shall  not be  further  qualified
     hereby) as of the Closing Date (except to the extent such representation or
     warranty speaks as of an earlier date), and the Company shall have received
     a certificate signed by a Responsible Officer of Parent to such effect.

          (b)  Performance of Covenants and Agreements by Parent and Merger Sub.
     Parent and Merger Sub shall have  performed  in all  material  respects all
     covenants  and  agreements  required  to be  performed  by them  under this
     Agreement  at or prior to the  Closing  Date,  and the  Company  shall have
     received a certificate  signed by a  Responsible  Officer of Parent to such
     effect.


                                    ARTICLE 7

                                   TERMINATION

     7.1 Termination Rights. This Agreement may be terminated and the Merger may
be abandoned at any time prior to the Effective  Time,  whether  before or after
approval of the Company Proposal by the shareholders of the Company:

          (a) By mutual written consent of Parent and the Company;

          (b) By either  the  Company  or Parent if: (i) the Merger has not been
     consummated  by February  28, 2001  (provided,  however,  that the right to
     terminate this Agreement pursuant to this clause (i) shall not be available
     to any Party whose breach of any  representation  or warranty or failure to
     perform any covenant or agreement  under this  Agreement has been the cause
     of or  resulted  in the  failure of the  Merger to occur on or before  such
     date); (ii) any Governmental  Authority shall have issued an order,  decree
     or ruling or taken any other action permanently  restraining,  enjoining or
     otherwise  prohibiting the Merger and such order,  decree,  ruling or other
     action shall have become final and nonappealable  (provided,  however, that
     the right to terminate  this  Agreement  pursuant to this clause (ii) shall
     not be available to any Party until such Party has used all reasonable best
     efforts to remove such injunction,  order or decree);  or (iii) the Company
     Proposal  shall not have been  approved by the required vote of the Company
     shareholders at the Company Meeting.

          (c) By Parent if: (i) there has been a breach in any material  respect
     of the  representations  and  warranties  made by the  Company in Article 3
     (provided,  however,  that any representation or warranty contained therein
     that is qualified by a materiality  standard or a Material  Adverse  Effect
     qualification shall not be further qualified hereby, and provided, further,
     that Parent shall not be entitled to terminate this  Agreement  pursuant to
     this clause (i) unless  Parent has given the Company  notice of such breach
     and the  Company has failed to cure such  breach  within 10 days  following

                                       48

<PAGE>


     such notice,  but in any event not later than February 28,  2001),  and the
     condition  described in Section  6.2(a),  other than the provision  thereof
     relating to the certificate signed by a Responsible Officer of the Company,
     would not be  satisfied  if the  Closing  were to occur on the day on which
     Parent gives the Company  notice of such  termination;  or (ii) the Company
     has failed to comply in any material  respect with any of its  covenants or
     agreements  contained in this  Agreement  and such failure has not been, or
     cannot be, cured  within 10 days after notice and demand for cure  thereof,
     but in any event not later than February 28, 2001; provided,  however, that
     there shall not be any cure period with respect to a breach of Section 5.1;

          (d) By the  Company  if:  (i) there has been a breach in any  material
     respect of the representations and warranties made by Parent and Merger Sub
     in  Article 4  (provided,  however,  that any  representation  or  warranty
     contained therein that is qualified by a materiality standard or a Material
     Adverse Effect  qualification  shall not be further qualified  hereby,  and
     provided, further, that the Company shall not be entitled to terminate this
     Agreement  pursuant to this clause (i) unless the Company has given  Parent
     notice of such breach and Parent has failed to cure such  breach  within 10
     days  following  such notice,  but in any event not later than February 28,
     2001),  and the  condition  described  in  Section  6.3(a),  other than the
     provision  thereof  relating  to the  certificate  signed by a  Responsible
     Officer of Parent,  would not be  satisfied if the Closing were to occur on
     the day on which the Company  gives Parent notice of such  termination;  or
     (ii) Parent or Merger Sub has failed to comply in any material respect with
     any of its respective  covenants or agreements contained in this Agreement,
     and, in either such case,  such  failure has not been,  or cannot be, cured
     within 10 days after notice and demand for cure  thereof,  but in any event
     not later than February 28, 2001;

          (e) By Parent if (i) the Board of Directors of the Company  shall have
     failed to recommend  adoption of the Company Proposal at the time the Proxy
     Statement  is first  mailed to  shareholders  of the  Company or shall have
     amended or withdrawn any such recommendation and such recommendation is not
     reinstated in its prior form within two business days after such  amendment
     or  withdrawal  or (ii) the Company  Meeting  does not occur for any reason
     (other than as a result of a breach of this  Agreement by Parent)  prior to
     February 26, 2001 or is adjourned beyond such date;

          (f) By Parent if from and after  June 30,  2000,  the  Company  should
     suffer or incur any Material Adverse Effect; or

          (g) By the Company upon receipt of a Financing  Termination  Notice if
     Parent is unable to obtain  replacement  Financing within ten business days
     thereafter  (but in any event not later than  February  24,  2001) on terms
     that provide for no greater conditions than those contained in the original
     Financing Commitments; provided, however, that such right to terminate this
     Agreement  must be exercised by the Company within five business days after
     the expiration of the above-referenced 10-business-day period.

     7.2 Effect of  Termination.  If this  Agreement is terminated by either the
Company or Parent  pursuant to the  provisions  of Section 7.1,  this  Agreement
shall forthwith become void except for, and there shall be no further obligation
on the  part  of any  party  hereto  or its  respective  Affiliates,  directors,
officers or  shareholders  except that, the provisions of Sections 5.2 (but only
to the extent of the confidentiality and  indemnification  provisions  contained
therein),  5.6(c),  5.6(d),  5.8, 5.10, 7.3,  Article 8 and the  Confidentiality

                                       49

<PAGE>

Agreement  shall survive any such  termination  and shall  continue  pursuant to
their terms;  provided,  however, that a termination of this Agreement shall not
relieve any Party hereto from any liability for damages  incurred as a result of
a breach by such Party of its representations, warranties, covenants, agreements
or other obligations  hereunder  occurring prior to such  termination;  provided
further,  that in the event of a  termination  of this  Agreement by the Company
pursuant  to  Section  7.1(g),  Parent  and  Merger  Sub shall be deemed to have
committed a material breach of this Agreement  unless the cause of the Financing
Termination  Notice and Parent's  inability to obtain  replacement  Financing as
contemplated  by Section 7.1(g) is due to a failure to fulfill the condition set
forth in Section 6.2(e).

     7.3 Fees and Expenses.  If this Agreement is terminated pursuant to Section
7.1(e) or clause (iii) of Section 7.1(b), the Company shall promptly,  but in no
event later than one business day after  termination of this  Agreement,  pay to
Parent an amount  equal to  $2,000,000  in same day funds and upon  making  such
payment the Company shall be fully released and discharged from any liability or
obligation resulting from or under this Agreement.


                                    ARTICLE 8

                                  MISCELLANEOUS

     8.1   Nonsurvival  of   Representations   and   Warranties.   None  of  the
representations  or warranties  contained in this Agreement or in any instrument
delivered  pursuant to this  Agreement  shall  survive the  consummation  of the
Merger.

     8.2  Amendment.  This  Agreement  may be amended by the Parties at any time
before or after approval of the Company Proposal by the shareholders of the
Company; provided, however, that, after any such approval, no amendment shall be
made that by law requires  further  approval by such  shareholders  without such
further  approval.  This  Agreement  may  not be  amended  except  by a  written
instrument signed by an authorized representative of each of the Parties.

     8.3  Notices.  Any  notice or other  communication  required  or  permitted
hereunder shall be in writing and either  delivered  personally  (effective upon
delivery),   by  facsimile  transmission   (effective  on  the  next  day  after
transmission),  by recognized  overnight delivery service (effective on the next
day after delivery to the service),  or by registered or certified mail, postage
prepaid and return receipt requested  (effective on the fifth business day after
the date of mailing),  at the  following  addresses  or  facsimile  transmission
numbers (or at such other address(es) or facsimile  transmission number(s) for a
Party as shall be specified by like notice):

                                       50

<PAGE>

         If to Parent or Merger Sub, to:

                  Cortez Oil & Gas, Inc.
                  Parkway Center II
                  2805 North Dallas Parkway, Suite 100
                  Plano, Texas 75093
                  Attention:  C. Randall Hill
                  Telephone: (972) 781-6595
                  Telecopier: (972) 781-6505

         with copies to:

                  Vinson & Elkins L.L.P.
                  3700 Trammell Crow Center
                  2001 Ross Avenue
                  Dallas, Texas 75201
                  Attention:  A. Winston Oxley
                  Telephone: (214) 220-7700
                  Telecopier: (214) 220-7716

         If to the Company, to:

                  Home-Stake Oil & Gas Company
                  2800 First Place Tower
                  15 E. 5th Street
                  Tulsa, Oklahoma 74103-4311
                  Attention:  Robert C. Simpson
                  Telephone: (918) 583-0178
                  Telecopier: (918) 583-0237

         with a copy to:

                  Conner & Winters
                  A Professional Corporation
                  3700 First Place Tower
                  15 E. 5th Street
                  Tulsa, Oklahoma 74103-4344
                  Attention:  Robert J. Melgaard
                  Telephone: (918) 586-5711
                  Telecopier: (918) 586-8548

     8.4   Counterparts.   This  Agreement  may  be  executed  in  one  or  more
counterparts,  all of which shall be considered one and the same agreement,  and
shall become effective when one or more counterparts have been signed by each of
the Parties and delivered to the other  Parties,  it being  understood  that all
Parties need not sign the same counterpart.

                                       51

<PAGE>

     8.5  Severability.  Any term or provision of this Agreement that is invalid
or  unenforceable  in  any  jurisdiction  shall,  as to  such  jurisdiction,  be
ineffective  to the  extent  of  such  invalidity  or  unenforceability  without
rendering  invalid or  unenforceable  the remaining terms and provisions of this
Agreement or affecting  the  validity or  enforceability  of any of the terms or
provisions of this Agreement in any other jurisdiction. If any provision of this
Agreement  is  so  broad  as  to  be  unenforceable,  such  provision  shall  be
interpreted to be only so broad as is enforceable.

     8.6  Entire  Agreement;  No  Third  Party  Beneficiaries.   This  Agreement
(together with the  Confidentiality  Agreement,  each exhibit hereto  (including
without limitation each Transaction  Document),  the Parent Disclosure  Schedule
and the Company  Disclosure  Schedule) (a) constitutes the entire  agreement and
supersedes all other prior agreements and understandings, both written and oral,
among the Parties with respect to the subject matter hereof and thereof; and (b)
except as provided in Article 2 and Section  5.11,  is solely for the benefit of
the Parties and their respective  successors,  legal representatives and assigns
and does not confer on any other Person any rights or remedies hereunder.

     8.7  Applicable  Law.  This  Agreement  shall be governed in all  respects,
including  validity,  interpretation  and  effect,  by the laws of the  State of
Oklahoma  regardless of the laws that might  otherwise  govern under  applicable
principles of conflicts of laws thereof.

     8.8 No Remedy in Certain Circumstances.  Each Party agrees that, should any
court or other competent  authority hold any provision of this Agreement or part
hereof to be null, void or unenforceable,  or order any Party to take any action
inconsistent  herewith or not to take an action consistent  herewith or required
hereby, the validity,  legality and  enforceability of the remaining  provisions
and  obligations  contained or set forth herein shall not in any way be affected
or impaired thereby,  unless the foregoing inconsistent action or the failure to
take any action  constitutes a material  breach of this  Agreement or makes this
Agreement  impossible to perform,  in which case this Agreement  shall terminate
pursuant to Article 7.

     8.9 Assignment.  Neither this Agreement nor any of the rights, interests or
obligations  hereunder  shall be  assigned  by any of the  Parties  (whether  by
operation of law or otherwise)  without the prior  written  consent of the other
Parties. Subject to the preceding sentence, this Agreement will be binding upon,
inure to the benefit of and be enforceable  by the Parties and their  respective
successors and assigns.

     8.10 Waivers.  At any time prior to the Effective Time, the Parties may, to
the extent legally allowed (a) extend the time for the performance of any of the
obligations or other acts of the other Parties,  (b) waive any  inaccuracies  in
the representations and warranties contained herein or in any document delivered
pursuant  hereto,  and  (c)  waive  performance  of  any  of  the  covenants  or
agreements,  or  satisfaction of any of the conditions,  contained  herein.  Any
agreement on the part of a Party to any such  extension or waiver shall be valid
only if set forth in a written instrument signed by an authorized representative
of such Party. Except as provided in this Agreement, no action taken pursuant to
this Agreement,  including any investigation by or on behalf of any Party, shall
be deemed to  constitute a waiver by the Party taking such action of  compliance
with any representations,  warranties, covenants or agreements contained in this

                                       52

<PAGE>


Agreement. The waiver by any Party of a breach of any provision hereof shall not
operate or be  construed  as a waiver of any prior or  subsequent  breach of the
same or any other provisions hereof.

     8.11 Confidentiality  Agreement. The Confidentiality Agreement shall remain
in full force and effect  following the execution of this  Agreement;  provided,
however,  that any standstill  provisions contained therein are hereby waived to
the extent necessary for the Parties to consummate the Merger in accordance with
the terms of this Agreement.

     8.12 No Recourse  Against Others.  Each of the following is herein referred
to as a "Parent  Affiliate":  (a) any  direct or  indirect  holder of any equity
interests or securities in Parent (whether limited or general partners, members,
shareholders,  or otherwise), (b) any Affiliate of Parent, and (c) any director,
officer, employee, representative or agent of (i) the Parent of Merger Sub, (ii)
any  Affiliate  of  Parent  or Merger  Sub,  or (iii) any such  holder of equity
interests or  securities  referred to in clause (a) above.  Except to the extent
that a  Parent  Affiliate  is an  express  signatory  party  hereto,  no  Parent
Affiliate  shall have any liability or  obligation  of any nature  whatsoever in
connection with or under this Agreement or the transactions contemplated hereby,
and the Company  hereby waives and releases all claims of any such liability and
obligation.

     8.13 Incorporation.  Exhibits and Schedules referred to herein are attached
hereto and by this reference incorporated herein for all purposes.

     8.14  Specific  Performance.  The parties  recognize  that in the event the
Company  should  refuse to  perform  under  the  provisions  of this  Agreement,
monetary  damages  alone  will not be  adequate.  Parent  and  Merger  Sub shall
therefore be entitled, in addition to any other remedies which may be available,
including  money damages,  to obtain  specific  performance of the terms of this
Agreement.  In the event of any action to enforce this  Agreement  specifically,
the Company hereby waives the defense that there is an adequate remedy at law.

     8.15 Section 1090.3.  The Parties  acknowledge and represent that the board
of  directors of each Party has  approved  the terms of this  Agreement  and the
other   Transaction   Documents  and  the   consummation  of  the   transactions
contemplated  herein and therein and that such  approval is sufficient to render
the  restrictions  on business  combinations  set forth in Section 1090.3 of the
OGCA inapplicable to the transactions contemplated by the Transaction Documents.



<PAGE>



         IN WITNESS  WHEREOF,  the  Parties  have caused  this  Agreement  to be
executed by their duly  authorized  representatives,  on the date first  written
above.

                            CORTEZ OIL & GAS, INC.


                            By:    /s/ C. Randall Hill
                                ---------------------------------------------
                            Name:    C. Randall Hill
                            Title:   Chief Executive Officer and President


                            CORTEZ ACQUISTION COMPANY


                            By:    /s/ C. Randall Hill
                                ---------------------------------------------
                            Name:    C. Randall Hill
                            Title:   President


                            HOME-STAKE OIL & GAS COMPANY


                            By:    /s/ Robert C. Simipson
                                ---------------------------------------------
                            Name:    Robert C. Simpson
                            Title:   Chief Executive Officer and President




                      [SIGNATURE PAGE TO MERGER AGREEMENT]

<PAGE>
                                                                   Exhibit A


                             STOCK VOTING AGREEMENT


         STOCK  VOTING  AGREEMENT  (this  "Agreement"),  dated as of October __,
2000, by and between the undersigned  stockholder (the "Stockholder") and Cortez
Oil & Gas,  Inc., a Delaware  corporation  ("Parent"),  and Home-Stake Oil & Gas
Company, an Oklahoma corporation (the "Company").

         WHEREAS,  concurrently herewith, Parent, Cortez Acquisition Company, an
Oklahoma corporation and a wholly owned subsidiary of Parent (the "Parent Sub"),
and the Company are entering  into an Agreement  and Plan of Merger of even date
herewith (the "Merger  Agreement"),  pursuant to which the Parent Sub will merge
with and into the Company (the "Merger"). Each capitalized term used herein, and
not  otherwise  defined  herein,  shall have the meaning set forth in the Merger
Agreement; and

         WHEREAS,  the  Stockholder  owns, as of the date hereof,  the number of
shares of common  stock,  $.01 par value per  share,  of the  Company  ("Company
Common Stock") (such shares of Company Common Stock owned by the  Stockholder on
the date hereof,  together with any shares of Company  Common Stock  acquired by
the  Stockholder  after the date  hereof  and prior to the  termination  hereof,
hereinafter  collectively  referred to as the  "Shares") set forth on Exhibit A;
and

         WHEREAS,  the Board of  Directors  of the  Company  has  approved  this
Agreement and the  transactions  contemplated  hereby in accordance with Section
1090.3 of the Oklahoma General Corporation Act; and

         WHEREAS,  Parent and Parent Sub are entering into the Merger  Agreement
in  reliance  on and in  consideration  of  the  Stockholder's  representations,
warranties, covenants and agreements hereunder.

         NOW, THEREFORE, in consideration of the mutual covenants and agreements
herein contained and other good and valuable consideration,  and intending to be
legally bound hereby, it is agreed as follows:

         1.  Agreement  to Vote.  The  Stockholder  hereby  revokes  any and all
previous  proxies  with  respect to such  Stockholder's  Shares and  irrevocably
agrees to vote and otherwise act  (including  pursuant to written  consent) with
respect to all of such Shares: (i) for the adoption of the Merger Agreement,  as
the same may be amended from time to time,  all actions  required in furtherance
thereof,  and all  agreements  related  to the Merger  and any  actions  related
thereto,  at any meeting or meetings of the stockholders of the Company,  and at
any  adjournment,  postponement  or  continuation  thereof,  at which the Merger
Agreement  and other  related  agreements  (or any  amended  version or versions
thereof) are submitted for the consideration and vote of the stockholders of the
Company;  (ii)  against any action or  agreement  that is  reasonably  likely to
result in a breach in any material  respect of any covenant,  representation  or
warranty or any other obligation of the Company under the Merger Agreement;  and
(iii) against (a) any  extraordinary  corporate  transaction,  such as a merger,
rights offering,  issuance of securities,  reorganization,  recapitalization  or
liquidation  involving  the  Company or any of its  subsidiaries  other than the



                                        1

<PAGE>



Merger,  (b) a sale or transfer  (other than to a subsidiary  of the Company) of
assets of the Company or any of its material  subsidiaries  comprising more than
15% of the assets of the Company on a consolidated basis, or (c) any action that
is reasonably likely to materially  impede,  interfere with, delay,  postpone or
adversely  affect  in any  material  respect  the  Merger  and the  transactions
contemplated by the Merger  Agreement.  The obligations of the Stockholder under
this  Section 1 shall  remain in effect with  respect to the Shares  until,  and
shall  terminate  upon,  the  earlier  to  occur of the  Effective  Time and the
termination of the Merger Agreement in accordance with its terms.

         2.  Representations and Warranties of the Stockholder.  The Stockholder
represents and warrants to Parent as follows:

         2.1      Onwership of Shares. On the date hereof, the Shares are all of
                  the Shares currently owned by the Stockholder. Except, as to a
                  Stockholder  that is an  individual,  as set forth in Schedule
                  2.1  and as  contemplated  by  Section  3.1,  the  Stockholder
                  currently  has,  and at  Closing  will have,  good,  valid and
                  marketable  title to the Shares,  free and clear of all liens,
                  encumbrances,   and   security   interests   (other  than  the
                  encumbrances   created  by  this   Agreement  and  other  than
                  restrictions  on transfer under  applicable  Federal and State
                  securities  laws)  and  free of other  restrictions,  options,
                  rights to purchase or other claims that would adversely affect
                  the  ability of the  Stockholder  to perform  its  obligations
                  hereunder  or  pursuant  to  which  the  Stockholder  could be
                  required to sell, assign or otherwise transfer the Shares.

         2.2      Authority;  Binding  Agreement.  The  Stockholder has the full
                  legal right, power and authority to enter into and perform all
                  of its obligations  under this  Agreement.  This Agreement has
                  been  duly  executed  and  delivered  by the  Stockholder  and
                  constitutes  a  legal,  valid  and  binding  agreement  of the
                  Stockholder,  enforceable in accordance with its terms, except
                  as the  enforcement  thereof  may be  limited  by  bankruptcy,
                  insolvency,  reorganization,  moratorium and similar laws, now
                  or hereafter in effect affecting creditors rights and remedies
                  generally  or  general  principles  of  equity.   Neither  the
                  execution and delivery of this Agreement nor the  consummation
                  by the  Stockholder of the  transactions  contemplated  hereby
                  will (i) violate,  or require any consent,  approval or notice
                  under, any provision of any judgment,  order, decree, statute,
                  law, rule or regulation  applicable to the  Stockholder or the
                  Shares except for filings under the Securities Exchange Act of
                  1934, as amended,  or (ii) constitute a violation of, conflict
                  with or constitute a default under, any contract,  commitment,
                  agreement, understanding,  arrangement or other restriction of
                  any kind to which the  Stockholder  is a party or by which the
                  Stockholder  is bound,  in each case the effect of which would
                  adversely affect the ability of the Stockholder to perform his
                  obligations hereunder.

         2.3      Reliance  on  Agreement.   The  Stockholder   understands  and
                  acknowledges that Parent is entering into the Merger Agreement
                  in reliance upon the  Stockholder's  execution and delivery of
                  this  Agreement.   The  Stockholder   acknowledges   that  the
                  agreement  set forth in Section 1 is granted in  consideration
                  for the  execution  and  delivery of the Merger  Agreement  by
                  Parent.



                                        2

<PAGE>




         3. Certain Covenants of the Stockholder.  Except in accordance with the
provisions of this  Agreement,  the  Stockholder  agrees with, and covenants to,
Parent as follows:

         3.1      Transfer.  The Stockholder  shall not, other than, in the case
                  of a  Stockholder  that is an  individual,  as a result of the
                  death of the  Stockholder,  (i)  transfer  (which  term  shall
                  include,   without  limitation,   for  the  purposes  of  this
                  Agreement, any sale, gift, pledge, assignment,  encumbrance or
                  other disposition),  whether directly or indirectly (including
                  by  operation  of law),  or consent to any transfer of, any or
                  all of the Shares or any interest therein,  except pursuant to
                  the Merger, (ii) grant any proxies with respect to the Shares,
                  deposit the Shares into a voting  trust or enter into a voting
                  agreement or similar  arrangement  with respect to the Shares,
                  or (iii) enter into any contract, option or other agreement or
                  understanding  with respect to any transfer of any or all such
                  Shares or any  interest  therein or take any other action with
                  respect  thereto,  in  either  case,  in a manner  that  would
                  prevent the Stockholder from performing its obligations  under
                  this Agreement.

         3.2      Stop  Transfer.   The  Stockholder  hereby  agrees  with,  and
                  covenants  to, each other party  hereto that such  Stockholder
                  shall not request that the Company register the transfer (book
                  entry  or  otherwise)  of any  certificate  or  uncertificated
                  interest  representing any of its Shares, unless such transfer
                  is made in compliance with this Agreement.  The Company agrees
                  with,  and  covenants  to,  each other  party  hereto that the
                  Company  shall  not  register  the  transfer  (book  entry  or
                  otherwise)  of  any  certificate  or  uncertificated  interest
                  representing  any of the Shares,  unless such transfer is made
                  in compliance with this Agreement.

         3.3      Solicitation.  Prior to the Effective  Time,  the  Stockholder
                  agrees in his  capacity as the  Stockholder  that it shall not
                  directly or  indirectly  (including  through  representatives,
                  advisors,  agents  or any  other  intermediaries)  solicit  or
                  encourage  (including  by way of  providing  information)  any
                  prospective  acquiror or the  invitation  or submission of any
                  inquiries,  proposals  or  offers  or  any  other  efforts  or
                  attempts  that  constitute,  or may  reasonably be expected to
                  lead to, any Acquisition Proposal from any person or engage in
                  any  discussions  or  negotiations  with  respect  thereto  or
                  otherwise  cooperate  with or  assist  or  participate  in, or
                  facilitate  any such  proposal;  provided,  however,  that the
                  Stockholder  may act as an  advisor or  representative  of the
                  Company in  connection  with actions taken by the Company that
                  are permitted pursuant to Section 5.3 of the Merger Agreement.

         3.4      Notifications.  The Stockholder shall, while this Agreement is
                  in effect, notify Parent promptly,  but in no event later than
                  two  business  days,  of the  number of any  shares of Company
                  Common  Stock  acquired  by the  Stockholder  after  the  date
                  hereof.

         3.5      Waiver.  The  Stockholder  agrees  to waive  any  rights  such
                  Stockholder  may have against the Company  under  Section 7 of
                  the  Indemnification  Agreement,  dated May 14,  1996,  by and



                                        3

<PAGE>



                  between the Company and the  Stockholder  with  respect to the
                  payment of $150 per hour as contemplated therein.

         4. Effect of  Purported  Transfer.  The parties  hereto  agree that any
transfer of the Shares made other than in compliance  with this Agreement  shall
be null and void.  Any such  transfer  shall  convey no  interest  in any of the
Shares purported to be transferred, and the transferee shall not be deemed to be
a stockholder of the Company nor entitled to receive a new share  certificate or
any rights, dividends or other distributions on or with respect to such Shares.

         5.  Termination.  This Agreement  shall terminate on the earlier of (i)
the  Effective  Time and (ii) upon the  termination  of the Merger  Agreement in
accordance with its terms.

         6. Action in the Stockholder's  Capacity Only. The Stockholder does not
make any  agreement  or  understanding  herein as  director  or  officer  of the
Company.  The  Stockholder  signs solely in his capacity as a  recordholder  and
beneficial owner of the Shares,  and nothing herein shall in any way restrict or
limit the  Stockholder  from taking any action in his  capacity as an officer or
director of the Company or otherwise  fulfilling his fiduciary  obligations as a
director or officer of the Company.

         7. Miscellaneous.


         7.1      Notices.  All  notices,  requests,  claims,  demand  and other
                  communications  under this  Agreement  shall be in writing and
                  shall  be  delivered  personally  or by  next-day  courier  or
                  telecopied with confirmation of receipt, to the parties at the
                  addresses  specified  below (or at such  other  address  for a
                  party as shall be  specified  by like  notice;  provided  that
                  notices of a change of address  shall be  effective  only upon
                  receipt  thereof).  Any such notice  shall be  effective  upon
                  receipt,  if  personally  delivered or  telecopied  or one day
                  after delivery to a courier for next-day delivery.




                                        4

<PAGE>



                  If to Parent:

                  Cortez Oil & Gas, Inc.
                  Parkway Center II
                  2805 North Dallas Parkway, Suite 100
                  Plano, Texas  75093
                  Attention:  C. Randall Hill
                  Telephone:  (972) 781-6595
                  Telecopier:  (972) 781-6505

                  with a copy to:

                  Vinson & Elkins L.L.P.
                  3700 Trammell Crow Center
                  2001 Ross Avenue
                  Dallas, Texas  75201
                  Attention:  A. Winston Oxley
                  Telephone:  (214) 220-7700
                  Telecopier:  (214) 220-7716

                  If to Stockholder: at the address set forth on Exhibit A.

                  If to the Company:

                  Home-Stake Oil & Gas Company
                  2800 First Place Tower
                  15 E. 5th Street
                  Tulsa, Oklahoma  74103-4311
                  Attention:  Robert C. Simpson
                  Telephone:  (918) 583-0178
                  Telecopier:  (918) 583-0237

                  with a copy to:

                  Conner & Winters
                  A Professional Corporation
                  3700 First Place Tower
                  15 E. 5th Street
                  Tulsa, Oklahoma  74103-4344
                  Attention:  Robert J. Melgaard
                  Telephone:  (918) 586-5711
                  Telecopier:  (918) 586-8548

         7.2      Entire Agreement. This Agreement,  together with the documents
                  expressly referred to herein,  constitute the entire agreement
                  and supersede all other prior  agreements and  understandings,



                                        5

<PAGE>




                  both written and oral,  among the parties or any of them, with
                  respect to the subject matter contained herein.

         7.3      Amendments.  This  Agreement  may  not  be  modified  amended,
                  altered  or  supplemented,   except  upon  the  execution  and
                  delivery  of a  written  agreement  executed  by  the  parties
                  hereto.

         7.4      Assignment.  This Agreement shall be binding upon and inure to
                  the  benefit  of  the  parties  hereto  and  their  respective
                  successors, assigns and personal representatives,  but neither
                  this Agreement nor any of the rights, interests or obligations
                  hereunder  shall be assigned by any of the parties without the
                  prior written consent of the other parties.

         7.5      Governing  Law.  This  Agreement,  and  all  matters  relating
                  hereto, shall be governed by, and construed in accordance with
                  the laws of the State of Oklahoma without giving effect to the
                  principles of conflicts of laws thereof.

         7.6      Injunctive  Relief. The Stockholder and the Company agree that
                  irreparable  damage would occur and that Parent would not have
                  any  adequate  remedy  at  law in the  event  that  any of the
                  provisions of this  Agreement were not performed in accordance
                  with their specific terms or were  otherwise  breached.  It is
                  accordingly  agreed  that  Parent  shall  be  entitled  to  an
                  injunction  or   injunctions   to  prevent   breaches  by  the
                  Stockholder  or the Company of this  Agreement  and to enforce
                  specifically the terms and provisions of this Agreement in any
                  court of competent jurisdiction, this being in addition to any
                  other remedy to which they are entitled at law or in equity.

         7.7      Counterparts.  This Agreement may be executed in any number of
                  counterparts,  each of which shall be deemed to be an original
                  and all of which  together  shall  constitute one and the same
                  document.

         7.8      Severability. Any term or provision of this Agreement which is
                  invalid or unenforceable in any jurisdiction shall, as to such
                  jurisdiction,  be ineffective to the extent of such invalidity
                  or unenforceability without rendering invalid or unenforceable
                  the  remaining  terms  and  provisions  of this  Agreement  or
                  affecting the validity or  enforceability  of any of the terms
                  or provisions of this Agreement in any other jurisdiction.  If
                  any  provision  of  this  Agreement  is  so  broad  as  to  be
                  unenforceable,  such provision shall be interpreted to be only
                  so broad as is enforceable.

                            [Signature Page Follows]



                                        6

<PAGE>



         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed, as of the date and year first above written.


                        CORTEZ OIL & GAS, INC.



                        By:
                           --------------------------------------------------
                        Name:  C. Randall Hill
                        Title:  Chief Executive Officer and President


                        HOME-STAKE OIL & GAS COMPANY



                        By:
                           --------------------------------------------------
                        Name:  Robert C. Simpson
                        Title:  Chief Executive Officer and President


                        STOCKHOLDER









                   [SIGNATURE PAGE TO STOCK VOTING AGREEMENT]

<PAGE>



                                    EXHIBIT A







                                       A-1


<PAGE>
                                                                 Exhibit  B-1

                              SEPARATION AGREEMENT


         This Separation  Agreement (this  "Agreement") is made and entered into
on October __, 2000 between Robert C. Simpson ("Executive") and Home-Stake Oil &
Gas Company, an Oklahoma corporation (the "Company").

         WHEREAS,  Executive  and  the  Company  are  parties  to an  Employment
Agreement,  dated  October 23,  1991,  and  effective  as of November  15, 1991,
pursuant to which the Company has employed  Executive (the "Original  Employment
Agreement");

         WHEREAS,  effective February 5, 1998, Executive and the Company amended
and restated the Original Employment Agreement;

         WHEREAS,  effective November 4, 1999, Executive and the Company further
amended and again restated the Original  Employment  Agreement (the  "Employment
Agreement");

         WHEREAS,  concurrently with the execution of this Agreement, Cortez Oil
& Gas, Inc., a Delaware corporation  ("Parent"),  Cortez Acquisition Company, an
Oklahoma corporation and a wholly-owned subsidiary of Parent ("Merger Sub"), and
the Company  have  entered  into an  Agreement  and Plan of Merger (the  "Merger
Agreement"),  pursuant to which Merger Sub will merge with and into the Company,
and the Company will become a wholly-owned  subsidiary of Parent (the "Merger");
and

         WHEREAS,  the Merger constitutes a Change in Control (as defined in the
Employment  Agreement)  and Executive  and the Company have  mutually  agreed to
terminate the Employment  Agreement and Executive's  employment with the Company
without  further  obligation  of either  party under the  Employment  Agreement,
effective as of the effective time of the Merger (the "Effective Time").

         NOW,  THEREFORE,  for and in  consideration  of the  mutual  covenants,
agreements,  and  promises  set forth  herein,  and for other good and  valuable
consideration  the receipt  and  sufficiency  of which are hereby  acknowledged,
Executive and the Company hereby agree as follows:

         1. Termination.  The parties hereby represent and warrant that prior to
the Effective Time,  Executive's  employment  relationship  with the Company was
pursuant  to and  governed  solely  by  the  Employment  Agreement.  Executive's
employment  with the  Company is hereby  terminated  as of the  Effective  Time.
Executive further agrees to and does hereby resign effective as of the Effective
Time  from any  other  appointments  or  positions  which  he may hold  with the
Company,  including,  without  limitation,  his  position  as a director  and/or
officer of the Company.  Executive agrees to execute all further documents which

                                        1

<PAGE>



Parent  or  the  Company  may  reasonably  request  of him  to  effectuate  such
resignations.

         2.       Termination Consideration.

                  (a) Cash  Payments.  In connection  with such  termination  of
employment  and the execution of this  Agreement,  the Company shall cause to be
paid to Executive a one-time  cash payment of  $____________  (such amount being
comprised of severance in the amount of $___________ and a transaction  bonus of
$___________)  (the  "Severance  Payment").  In  addition,  in full and complete
satisfaction  of  the  Company's   obligation  to  indemnify  (however  arising)
Executive from and against any taxes imposed on Executive by Section 4999 of the
Internal Revenue Code of 1986, as amended, the Company shall cause to be paid to
Executive  a cash  payment  of  $__________  (collectively  with  the  Severance
Payment,  the  "Termination  Payment") at the  Effective  Time.  Delivery of the
Termination  Payment to Executive is conditioned upon the delivery and execution
by  Executive of (i) this  Agreement  on the date the Merger  Agreement is fully
executed  by all  parties  thereto;  and (ii)  the  Addendum  to this  Agreement
attached hereto as Exhibit A (the  "Addendum") at the Closing (as defined in the
Merger  Agreement).  The  Company  shall  make the  Termination  Payment  at the
Effective  Time, but Executive  shall not be entitled to receive the Termination
Payment  unless and until the Company  receives each document  described in this
paragraph 2 duly executed by Executive.

                  (b)  Automobile.  During the period  beginning  on the date of
this  Agreement  and ending at 5:00 p.m.  Dallas,  Texas time on the date of the
Effective Time (the "Payment Deadline"), Executive shall be entitled to purchase
from the  Company  the  Company  automobile  described  on Exhibit B hereto (the
"Automobile") for a cash purchase price equal to the lesser of (i) its then book
value  after  depreciation  as shown on the books and  records of the Company or
(ii) its fair  market  value as set  forth in Kelley  Blue Book Used Car  Guide,
Consumer  Edition,  1985-1999  Used Car and Truck  Retail  Values.  If Executive
elects  to  purchase  the  Automobile,  he must  deliver  full  payment  for the
Automobile as determined  pursuant to the immediately  preceding sentence to the
Company's  principal  office by the Payment  Deadline.  If  Executive  elects to
purchase  the  Automobile,  Executive  and the  Company  will  use  commercially
reasonable   efforts  to  execute  and  deliver  to  each  other  all  necessary
agreements,  documents  and  instruments,  and  to  finalize  the  sale  of  the
Automobile to Executive as soon as  practicable.  If Executive  does not deliver
full  payment  for  the  Automobile  to the  Company  by the  Payment  Deadline,
Executive must return the Automobile to the Company's  principal office no later
than the Payment Deadline.

         3. Taxes. The termination  consideration set forth in paragraph 2(a) of
this  Agreement  shall  be  subject  to  applicable  federal,  state  and  local
withholding  taxes.  Executive  agrees that,  to the extent that any  individual
federal,  state  or local  income  or  excise  taxes of any kind may be due as a
result of any such payment to Executive,  Executive shall be solely  responsible
for such taxes and will indemnify,  defend, and hold harmless the Company in the
event there is any claim against the Company for such taxes.

         4. General Release and Covenant Not to Sue.  EFFECTIVE AT THE EFFECTIVE
TIME,  EXECUTIVE,  ON BEHALF OF  HIMSELF,  AND TO THE EXTENT HE HAS THE POWER OR
AUTHORITY TO DO SO, HIS FAMILY,  ATTORNEYS,  HEIRS, ESTATE,  AGENTS,  EXECUTORS,

                                       2
<PAGE>



         REPRESENTATIVES, ADMINISTRATORS AND EACH OF THEIR RESPECTIVE SUCCESSORS
AND ASSIGNS (TOGETHER,  THE "EXECUTIVE PARTIES"),  HEREBY GENERALLY RELEASES AND
FOREVER  DISCHARGES,  THE  COMPANY,  PARENT,  MERGER SUB,  AND THEIR  RESPECTIVE
PREDECESSORS, SUCCESSORS, ASSIGNS, PARENTS, SUBSIDIARIES AND AFFILIATES AND EACH
OF THE FOREGOING  ENTITIES'  RESPECTIVE PAST,  PRESENT AND FUTURE  SHAREHOLDERS,
DIRECTORS, OFFICERS, EMPLOYEES, AGENTS, REPRESENTATIVES,  PRINCIPALS,  INSURERS,
ATTORNEYS,   EMPLOYEE  BENEFIT  PROGRAMS  (AND  THE  TRUSTEES,   ADMINISTRATORS,
FIDUCIARIES, REPRESENTATIVES, COMMITTEES AND INSURERS OF SUCH PROGRAMS) IN THEIR
RESPECTIVE  CAPACITIES AS SUCH, AND ANY PERSON ACTING BY,  THROUGH,  UNDER OR IN
CONCERT WITH ANY OF THE FOREGOING ENTITIES (TOGETHER THE "COMPANY PARTIES") FROM
ANY AND ALL CLAIMS, COMPLAINTS,  CHARGES, DEMANDS, LIABILITIES,  SUITS, DAMAGES,
LOSSES, EXPENSES, ATTORNEYS' FEES, OBLIGATIONS OR CAUSES OF ACTION (COLLECTIVELY
"CLAIMS"), KNOWN OR UNKNOWN OF ANY KIND AND EVERY NATURE WHATSOEVER, AND WHETHER
OR NOT  ACCRUED  OR  MATURED,  WHICH  ANY OF THEM MAY  HAVE,  ARISING  OUT OF OR
RELATING  TO  EXECUTIVE'S  EMPLOYMENT  BY  THE  COMPANY  OR  INVESTMENT  IN,  OR
RELATIONSHIP OR DEALING WITH, THE COMPANY OR EXECUTIVE'S SERVICES AS AN OFFICER,
DIRECTOR OR EMPLOYEE OF THE COMPANY OR OTHERWISE  RELATING TO THE TERMINATION OF
SUCH  EMPLOYMENT  OR SERVICES,  AT ANY TIME PRIOR TO AND INCLUDING THE EFFECTIVE
TIME. THIS RELEASE  INCLUDES BUT IS NOT LIMITED TO ANY CLAIMS AGAINST ANY OF THE
COMPANY  PARTIES  BASED ON,  RELATING TO OR ARISING  UNDER  WRONGFUL  DISCHARGE,
RETALIATION,  BREACH  OF  CONTRACT  (WHETHER  ORAL  OR  WRITTEN),  TORT,  FRAUD,
DEFAMATION,  SLANDER, BREACH OF PRIVACY, VIOLATION OF PUBLIC POLICY, NEGLIGENCE,
PROMISSORY  ESTOPPEL,  TITLE  VII OF THE  CIVIL  RIGHTS  ACT OF  1964,  THE  AGE
DISCRIMINATION  IN EMPLOYMENT  ACT, THE  AMERICANS  WITH  DISABILITIES  ACT, THE
EMPLOYEE RETIREMENT INCOME SECURITY ACT, OR ANY OTHER FEDERAL,  COMMON, STATE OR
LOCAL LAW RELATING TO EMPLOYMENT (OR UNEMPLOYMENT), THE PAYMENT OF WAGES, SALARY
OR OTHER  COMPENSATION,  CIVIL OR HUMAN RIGHTS,  OR DISCRIMINATION IN EMPLOYMENT
(BASED ON AGE OR ANY OTHER  FACTOR) IN ALL CASES  ARISING  OUT OF OR RELATING TO
EXECUTIVE'S  EMPLOYMENT  BY THE  COMPANY  OR  INVESTMENT  IN THE  COMPANY OR HIS
SERVICES AS AN  OFFICER,  DIRECTOR OR  EMPLOYEE  OF THE  COMPANY,  OR  OTHERWISE
RELATING TO THE TERMINATION OF SUCH EMPLOYMENT OR SERVICES;  PROVIDED,  HOWEVER,
THAT THIS GENERAL RELEASE WILL NOT LIMIT OR RELEASE (I) EXECUTIVE'S RIGHTS UNDER
THIS AGREEMENT,  (II) EXECUTIVE'S RIGHTS TO INDEMNIFICATION  FROM THE COMPANY IN
RESPECT OF HIS  SERVICES  AS A  DIRECTOR,  OFFICER OR EMPLOYEE OF THE COMPANY AS
PROVIDED BY HIS INDEMNIFICATION AGREEMENT WITH THE COMPANY, BY PROVISIONS OF THE
MERGER AGREEMENT, BY LAW, OR BY THE CERTIFICATE OF INCORPORATION OR BY- LAWS (OR
LIKE  CONSTITUTIVE  DOCUMENTS)  OF THE  COMPANY,  INCLUDING  WITHOUT  LIMITATION
EXECUTIVE'S  RIGHTS TO, AND COVERAGE UNDER,  DIRECTORS' AND OFFICERS'  LIABILITY
INSURANCE  MAINTAINED  BY  THE  COMPANY,  (III)  EXECUTIVE'S  RIGHT  TO  RECEIVE
CONSIDERATION  IN  CONNECTION  WITH THE MERGER AS  PROVIDED  IN ARTICLE 2 OF THE

                                        3

<PAGE>



MERGER AGREEMENT, OR (IV) EXECUTIVE'S ENTITLEMENT,  IF ANY, TO CONTINUED MEDICAL
AND DENTAL  INSURANCE  COVERAGE UNDER AND PURSUANT TO THE  CONSOLIDATED  OMNIBUS
BUDGET RECONCILIATION ACT OF 1985. IN FURTHERANCE OF THIS RELEASE, EXECUTIVE, ON
BEHALF OF HIMSELF AND, TO THE EXTENT HE HAS THE POWER OR AUTHORITY TO DO SO, THE
EXECUTIVE  PARTIES,  HEREBY COVENANTS  FOREVER NOT TO ASSERT,  FILE,  PROSECUTE,
COMMENCE, INSTITUTE (OR SPONSOR OR PURPOSELY FACILITATE ANY PERSON IN CONNECTION
WITH THE  FOREGOING),  ANY CLAIMS,  BEFORE OR WITH ANY COURT OR ANY  ARBITRAL OR
ADMINISTRATIVE AUTHORITY, AGAINST ANY OF THE COMPANY PARTIES, AND REPRESENTS AND
WARRANTS  THAT NO OTHER PERSON OR ENTITY HAS  INITIATED OR, TO THE EXTENT WITHIN
HIS CONTROL,  WILL  INITIATE  ANY SUCH CLAIMS ON HIS BEHALF,  AND THAT IF SUCH A
CLAIM IS INITIATED, EXECUTIVE SHALL ACCEPT NO BENEFIT THEREFROM.

         5. Additional Agreement. Executive hereby agrees to sign and deliver to
Parent the Addendum at the Closing (as defined in the Merger Agreement).

         6. Confidentiality Obligations.

            (a)  Executive  hereby  acknowledges  that  all  trade  secrets  and
confidential or proprietary information of the Company (collectively referred to
herein as "Confidential  Information")  constitute valuable,  special and unique
assets of the Company's  business.  Executive  agrees that,  for a period of one
year  from and after  the  Effective  Time,  Executive  will  hold  Confidential
Information in strict confidence and will not publish,  disseminate or otherwise
disclose,  directly  or  indirectly,  to any person  other than the  Company and
Parent and their respective officers,  directors and employees, any Confidential
Information or use any  Confidential  Information  for  Executive's own personal
benefit or for the benefit of anyone other than the Company and Parent.

            (b) For purposes of this paragraph 6, it is agreed that Confidential
Information  includes,   without  limitation,   any  information  heretofore  or
hereafter  acquired,  developed  or used by the  Company  relating  to  Business
Opportunities  or  Intellectual  Property  (as  hereinafter  defined)  or  other
geological,  geophysical,  economic,  financial  or  management  aspects  of the
business, operations,  properties or prospects of the Company whether oral or in
written  form,  whether or not included in the  Company's  Business  Records (as
hereinafter defined), but shall exclude any information which has become part of
common  knowledge or  understanding  in the oil and gas industry or otherwise in
the public domain (other than from  disclosure by Executive in violation of this
Agreement  or of  Executive's  obligations  under  applicable  law) or has  been
disclosed to any third parties on a non-confidential basis by the Company or any
of its representatives;  provided,  however,  that this paragraph 6 shall not be
applicable  to the extent  Executive  is  required  to testify in a judicial  or
regulatory proceeding, or to produce documents, pursuant to the order of a judge
or  administrative  law judge after  Executive has given the Company  reasonable

                                       4

<PAGE>



notice and opportunity to seek relief from such requirement.  The term "Business
Opportunities"  shall mean all business  ideas,  prospects,  proposals and other
opportunities  pertaining to the lease,  acquisition,  exploration,  production,
gathering or marketing of hydrocarbons  and related products and the exploration
potential of geographical areas on which hydrocarbon  exploration  prospects are
located, which have been:

                  (i)  developed by Executive  during the period that  Executive
         has been employed by the Company, or

                  (ii)  originated  by  any  third  party  and  brought  to  the
         attention of Executive during his employment with the Company.

The term "Intellectual Property" shall mean all ideas, inventions,  discoveries,
processes,  designs,  methods,  substances,  articles,  computer  programs,  and
improvements  (including,  without  limitation,   enhancements  to,  or  further
interpretation  or  processing  of,  information  that was in the  possession of
Executive prior to his employment  with the Company),  whether or not patentable
or  copyrightable,   which  do  not  fall  within  the  definition  of  Business
Opportunities,  which have been discovered,  conceived,  invented,  created,  or
developed by  Executive,  alone or with others,  during the term of  Executive's
employment with the Company if such discovery, conception,  invention, creation,
or  development  (i) occurred in the course of Executive's  employment  with the
Company, or (ii) occurred with the use of any of the Company's time,  materials,
or facilities,  or (iii) in the reasonable  opinion of the Board of Directors of
the  Company,  relates  or  pertains  in  any  way to  the  Company's  purposes,
activities, or affairs.

         7.  Non-Compete  Obligations.  The  purpose of the  provisions  of this
paragraph 7 are to protect the Company from unfair loss of goodwill and business
advantage and to shield Executive from pressure to use or disclose  Confidential
Information or to trade on the goodwill  belonging to the Company.  Accordingly,
during the Post Termination Non-Compete Term (as hereinafter defined), Executive
will not engage or  participate  in any manner,  whether  directly or indirectly
through  any  family  member or as an  employee,  employer,  consultant,  agent,
principal, partner, shareholder,  officer, director, licensor, lender, lessor or
in any other individual or representative  capacity, in any business or activity
which is engaged in  leasing,  acquiring,  exploring,  producing,  gathering  or
marketing  hydrocarbons and related products within the boundaries of, or within
a 20-mile  radius of the  boundaries  of, any mineral  property  interest of the
Company  (including,  without  limitation,  interests  under  a  mineral  lease,
overriding royalty interest,  production payment, net profits interest,  mineral
fee interest, or option or right to acquire any of the foregoing,  or an area of
mutual  interest as designated  pursuant to contractual  agreements  between the
Company  and any third  party) and  located in any of Lea  County,  New  Mexico;
Gaines County, Texas; Dawson County, Montana; or Latimer,  Pittsburg,  Canadian,
McClain or Grady Counties,  Oklahoma;  provided, however, that, this paragraph 7
shall not preclude Executive from (i) making personal  investments in securities
of oil and gas  companies,  if the  aggregate  amount owned by Executive and all
family members and affiliates  does not exceed 5% of such company's  outstanding
equity  securities,  (ii)  serving  as  a  director  of  any  company  (and  its
successors),  if the  aggregate  amount of  securities  of such company owned by
Executive  and all  family  members  and  affiliates  does not exceed 5% of such
company's outstanding equity securities or (iii) leasing, exploring,  producing,
gathering or marketing  hydrocarbons  and related  products  with respect to any

                                        5

<PAGE>

mineral  property  interest  wherever  located owned by Executive on the date of
this  Agreement  in his own  name or in the name of a living  trust  created  by
Executive.  The term "Post  Termination  Non-Compete  Term"  means the one- year
period following the Effective Time.

         8. Business Records.

            (a)  Executive  agrees to  promptly  deliver to the Company no later
than the Effective Time, all documents  relating to the business of the Company,
including,  without  limitation:  all  geological  and  geophysical  reports and
related data such as maps, charts, logs, seismographs, seismic records and other
reports  and related  data,  calculations,  summaries,  memoranda  and  opinions
relating to the  foregoing,  production  records,  electronic  logs,  core data,
pressure data, lease files, well files and records, land files, abstracts, title
opinions, title or curative matters,  contract files, notes, records,  drawings,
manuals, correspondence,  financial and accounting information,  customer lists,
statistical data and compilations, patents, copyrights, trademarks, trade names,
inventions, formulae, methods, processes, agreements, contracts, manuals and any
other  documents  relating to the  business of the  Company  (collectively,  the
"Company's Business Records"), and all copies thereof and therefrom.

            (b) Executive  confirms that all of the Company's  Business  Records
(and all copies thereof and therefrom)  that are required to be delivered to the
Company  pursuant to this paragraph 8 constitute  the exclusive  property of the
Company.

            (c) The obligation of confidentiality set forth in paragraph 6 above
shall continue notwithstanding Executive's delivery of any such documents to the
Company.

         9. Employment Agreements.  Each of the Company and Executive represents
and  warrants  that the  Employment  Agreement  and any  amendments  thereto are
attached as exhibits to this Agreement.

         10. False Claims Representations/Cooperation. Executive represents that
he has disclosed to the Company and Parent any information he has concerning any
conduct involving the Company which he has any reason to believe may be unlawful
or to involve any false claims to any United States  governmental  agency.  From
and after the  Effective  Time,  Executive  promises to  cooperate  fully in any
investigation Parent or the Company undertakes into matters occurring during his
employment  with the  Company.  From and after  the  Effective  Time,  Executive
further  agrees to  cooperate  with  Parent  and/or the  Company  as  reasonably
requested by Parent and/or the Company by  responding  to  questions,  attending
depositions, administrative proceedings and court hearings, executing documents,
and  cooperating  with Parent and/or the Company and its  accountants  and legal
counsel with respect to business  issues,  and/or claims and litigation of which
he has  personal or  corporate  knowledge.  From and after the  Effective  Time,

                                       6
<PAGE>

Executive  further  agrees,  except as required by subpoena or other  applicable
legal process (after Parent and/or the Company has been given reasonable  notice
and opportunity to seek relief from such  requirement),  to maintain,  in strict
confidence,  any information of which he has knowledge  regarding current and/or
future claims,  administrative  proceedings and  litigation.  From and after the
Effective  Time,  Executive  agrees,  except as  required  by  subpoena or other
applicable  legal  process  (after  Parent  and/or  the  Company  has been given
reasonable notice and opportunity to seek relief from such requirement),  not to
communicate with any party(ies), their legal counsel or others adverse to Parent
and/or the Company in any such claims,  administrative proceedings or litigation
except through Parent's and/or the Company's designated legal counsel.  From and
after the  Effective  Time,  Executive  also shall  make  himself  available  at
reasonable times and upon reasonable notice to answer questions or provide other
information  within his  possession  and  requested by Parent and/or the Company
relating  to Parent  and/or the  Company  and their  subsidiaries  and/or  their
respective   operations  in  order  to  facilitate  the  smooth   transition  of
Executive's duties to his successor;  provided,  however, Executive shall not be
required to spend any  particular  amount of time on behalf of Parent and/or the
Company.  Parent and/or the Company shall reimburse Executive for any documented
out-of-pocket  expenses,  including  but not limited to  reasonable  legal fees,
reasonably  incurred by Executive in complying with this paragraph 10, and shall
pay Executive a per diem amount,  calculated  based on  Executive's  annual base
salary in effect  immediately  prior to the Effective Time, for any periods that
Executive makes himself  available to Parent and/or the Company  pursuant to the
foregoing provisions of this paragraph 10.

         11. Mail.  From and after the Effective  Time, the Company may open and
answer,  and authorize others to open and answer, all mail  communications,  and
other  correspondence  addressed to Executive  relating to Parent,  the Company,
Merger Sub, or any of their respective subsidiaries or to Executive's employment
with  the  Company,  and  Executive  shall  promptly  refer to the  Company  all
inquiries,  mail communications,  and correspondence received by him relating to
Parent, the Company,  Merger Sub, or any of their respective  subsidiaries or to
Executive's  employment with the Company.  If any such mail,  communications  or
correspondence  received by the Company includes any threat of any claim against
Executive  personally,  the Company shall promptly notify Executive thereof. The
Company will promptly  forward to Executive any of  Executive's  personal  mail,
communications or correspondence received by the Company, unopened to the extent
it is reasonably ascertained to be of a personal nature.

         12.  Notices.  Any notice required or permitted by this Agreement shall
be in writing,  sent by registered or certified mail, return receipt  requested,
addressed  to the  Board of  Directors  of the  Company  at the  Company's  then
principal office, or to Executive at the address set forth on the signature page
hereof,  as the case may be, or to such other  address or addresses as any party
hereto may from time to time  specify in  writing  for that  purpose in a notice
given to the other party in compliance  with this paragraph 12. Notices shall be
deemed given when received.


         13.  Certain  Acknowledgements.   Executive  acknowledges  that  before
entering  into this  Agreement  he has had the  opportunity  to consult  with an
attorney or other advisor of his choice,  and has done so, and has not relied in
connection  herewith on legal  counsel for the Company.  Executive  acknowledges
that he has  entered  into  this  Agreement  of his own free  will,  and that no
promises or representations have been made to him by any person to induce him to
enter into this Agreement other than the terms expressly set forth herein.

         14.  Prior  Agreements.  This  Agreement  integrates  the  whole of all
agreements  and  understandings  of any sort or  character  between  the parties

                                        7

<PAGE>



concerning  the  subject  matter of this  Agreement,  and  supersedes  all prior
negotiations,  discussions, or agreements of any sort whatsoever relating to the
subject matter  hereof.  Further,  all prior  employment  contracts  between the
parties are superseded by this Agreement.  There are no unwritten oral or verbal
understandings,  agreements, or representations, of any sort whatsoever, between
Executive  and the  Company  relating  to the subject  matter  hereof,  it being
stipulated that the rights of the parties shall be governed  exclusively by this
Agreement.

         15. Modification.  This Agreement may not be modified or amended except
in writing signed by the parties. No term or condition of this Agreement will be
deemed to have been waived except in writing by the party charged with waiver. A
waiver shall operate only as to the specific  term or condition  waived and will
not  constitute  a waiver  for the  future or act on  anything  other  than that
specifically waived.

         16.  Counterparts.  This  Agreement  may be  executed  in any number of
counterparts,  each of which  shall be an  original,  but all of which  together
shall constitute one and the same instrument.  Any counterpart of this Agreement
that has  attached to it separate  signature  pages which  together  contain the
signatures  of all  parties  hereto  shall  for all  purposes  be deemed a fully
executed original. Facsimile signatures shall constitute original signatures.

         17.  Successor  and  Assigns.  All the  terms  and  provisions  of this
Agreement  shall be binding upon and inure to the benefit of the parties  hereto
and to the respective  successors and permitted assigns.  Neither this Agreement
nor any rights or obligations hereunder may be assigned by Executive, other than
by will or the laws of descent or distribution, or the Company.

         18.  Severability.  All provisions of this Agreement are intended to be
severable. In the event any provision or restriction contained herein is held to
be invalid or  unenforceable  in any respect,  in whole or in part, such finding
shall in no way affect the validity or  enforceability of any other provision of
this  Agreement.  The  parties  hereto  further  agree that any such  invalid or
unenforceable provision shall be deemed modified so that it shall be enforced to
the greatest extent  permissible  under law, and to the extent that any court or
arbitrator of competent  jurisdiction  determines any  restriction  herein to be
unreasonable  in any respect,  such court or arbitrator may limit this Agreement
to render it  reasonable  in light of the  circumstances  in which it is entered
into and specifically enforce this Agreement as limited.

         19. Indemnification.  EXECUTIVE AGREES, WARRANTS, AND REPRESENTS TO THE
COMPANY,  PARENT AND MERGER SUB THAT  EXECUTIVE  HAS FULL  EXPRESS  AUTHORITY TO
RELEASE  AND SETTLE  ALL CLAIMS  THAT ARE THE  SUBJECT  OF  PARAGRAPH  4 OF THIS
AGREEMENT  AND THAT  EXECUTIVE  HAS NOT GIVEN OR MADE ANY  ASSIGNMENT TO ANYONE,
INCLUDING,  BUT NOT LIMITED TO, THE EXECUTIVE PARTIES, OF ANY CLAIMS AGAINST ANY
PERSON OR ENTITY  ASSOCIATED  WITH ANY COMPANY  PARTIES.  TO THE EXTENT THAT ANY
CLAIMS RELATED TO THIS AGREEMENT MAY BE BROUGHT BY PERSONS OR ENTITIES  CLAIMING
BY,  THROUGH OR UNDER  EXECUTIVE,  INCLUDING,  BUT NOT LIMITED TO, THE EXECUTIVE
PARTIES,  THEN EXECUTIVE FURTHER AGREES TO INDEMNIFY,  DEFEND, AND HOLD HARMLESS
ANY COMPANY  PARTY,  ITS AGENTS,  AND ITS  SUCCESSORS  FROM ANY LAWSUIT OR OTHER

                                       8

<PAGE>

PROCEEDING,  JUDGMENT, OR SETTLEMENT ARISING FROM SUCH CLAIMS. EXECUTIVE FURTHER
HEREBY ASSIGNS TO THE COMPANY ALL CLAIMS COVERED BY PARAGRAPH 4 HEREOF.

         20. Injunction. Executive hereby expressly acknowledges that any breach
or threatened  breach by him of any of his  obligations set forth in paragraph 4
(General  Release  and  Covenant  Not  to  Sue),  paragraph  6  (Confidentiality
Obligations)  and paragraph 7  (Non-Compete  Obligations)  of this Agreement may
result in significant and continuing  injury and irreparable  harm to Parent and
the  Company,  the monetary  value of which would be  impossible  to  establish.
Therefore,  Executive  agrees that  Parent and the Company  shall be entitled to
injunctive  relief in a court of appropriate  jurisdiction  with respect to such
provisions. Further, if Executive violates the covenants and restrictions herein
and the Company  brings legal action for injunctive or other  equitable  relief,
Executive  agrees that the  Company  shall not be deprived of the benefit of the
full period of the  restrictive  covenant,  as a result of the time  involved in
obtaining such relief. Accordingly, Executive agrees that the provisions in this
paragraph  20 shall have a duration  determined  pursuant to  paragraph 7 above,
computed  from the date the relief is granted.  The parties  further  agree that
this  provision  is a  material  inducement  to the  Company  to enter into this
Agreement.

         21. Choice of Law. This Agreement shall be governed by and construed in
accordance  with the laws of the State of  Oklahoma  (without  giving  effect to
principles  of conflict of law) and,  where  applicable,  the laws of the United
States.

         22. No Right to Additional  Compensation.  Except as expressly provided
in this  Agreement  or as provided in the Merger  Agreement,  from and after the
Effective  Time,  neither  Parent,  the  Company,  Merger Sub,  nor any of their
predecessors,   successors,   assigns  or  affiliates  shall  have  any  further
obligation  to  Executive  in  connection  with  the  Employment   Agreement  or
Executive's employment by the Company, including, but not limited to, severance,
compensation (including,  but not limited to, deferred compensation,  employment
contracts,  stock options,  bonuses and  commissions),  health  insurance,  life
insurance,  disability insurance,  club dues, vehicle allowances,  vacation pay,
sick pay and any similar obligations.

         23.  No  Admission.  The  parties  agree  that by  entering  into  this
Agreement,  no party  admits to having  engaged  in any  unlawful,  wrongful  or
unconscionable conduct, any such conduct being expressly denied.

         24. Construction.  The parties agree that this Agreement was negotiated
by the parties and shall not be construed against any party. As used herein, the
term "affiliate"  shall have the meaning given such term in Rule 405 promulgated
under the Securities Act of 1933.

         25.  Arbitration.  Except  with  respect  to  the  provisions  of  this
Agreement  relating to injunctive and other equitable relief,  the parties agree
to  submit to  binding  arbitration  administered  by the  American  Arbitration
Association under its National Rules for Resolution of Employment  Disputes (the
"Arbitration")  any and all  disputes  relating to or arising  from  Executive's
employment with the Company,  the termination  thereof, the Employment Agreement
or this Agreement.  The arbitrator  shall be qualified to hear  employment/labor
matters. Each party shall be responsible for its respective costs and attorneys'

                                        9

<PAGE>

fees incurred in connection with the Arbitration, and the Arbitration fees shall
be divided equally between Executive,  on the one hand, and the Company,  on the
other hand. The decision of the  Arbitrator  shall be binding on the parties and
not subject to appeal.  Except to the extent  required by law,  the  Arbitration
result shall be kept confidential.

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]


                                     10
<PAGE>

         IN WITNESS  WHEREOF,  the  Company  has  caused  this  Agreement  to be
executed in its corporate name by an officer thereof  thereunto duly authorized,
and  Executive  has  hereunto  set his  hand,  on the day and year  first  above
written.



                                  HOME-STAKE OIL & GAS COMPANY



                                  By:
                                     -----------------------------------------
                                  Name:
                                       ---------------------------------------
                                  Title:
                                        --------------------------------------








                                  -------------------------------------------
                                  ROBERT C. SIMPSON

                                  Address:
                                          --------------------------

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

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







                    [SIGNATURE PAGE TO SEPARATION AGREEMENT]

<PAGE>



                                    EXHIBIT A

                        ADDENDUM TO SEPARATION AGREEMENT

         This Addendum to Separation Agreement (this "Addendum") supplements the
Separation  Agreement between Robert C. Simpson (the "Executive") and Home-Stake
Oil & Gas Company,  an Oklahoma  corporation (the "Company"),  dated October __,
2000 (the "Separation  Agreement").  All capitalized  terms used herein that are
not defined  herein but are defined in the Separation  Agreement  shall have the
meanings assigned to them in the Separation Agreement.

         Executive  hereby agrees that paragraph 4 (General Release and Covenant
Not to Sue) of the  Separation  Agreement  applies  with  respect to all Claims,
known or unknown of any kind and every  nature  whatsoever,  and  whether or not
accrued or matured, which any of the Company Parties may have, arising out of or
relating  to  Executive's  employment  by  the  Company  or  investment  in,  or
relationship or dealing with, the Company or Executive's services as an officer,
director or employee of the Company or otherwise  relating to the termination of
such  employment  or services,  at any time prior to and including the Effective
Time.

         Executive  acknowledges  that the  provisions  of this  Addendum are in
addition to, and do not supercede, the provisions in the Separation Agreement.

         IN WITNESS WHEREOF,  Executive has hereunto set his hand, this ____ day
of __________, 2000.





                                               -------------------------------
                                               ROBERT C. SIMPSON




<PAGE>
                                                                  Exhibit B-2

                              SEPARATION AGREEMENT


         This Separation  Agreement (this  "Agreement") is made and entered into
on October __, 2000 between Chris K. Corcoran ("Executive") and Home-Stake Oil &
Gas Company, an Oklahoma corporation (the "Company").

         WHEREAS,  Executive  and  the  Company  are  parties  to an  Employment
Agreement,  dated  November  30,  1999,  and  effective  as of November 4, 1999,
pursuant  to  which  the  Company  has  employed   Executive  (the   "Employment
Agreement");

         WHEREAS,  concurrently with the execution of this Agreement, Cortez Oil
& Gas, Inc., a Delaware corporation  ("Parent"),  Cortez Acquisition Company, an
Oklahoma corporation and a wholly-owned subsidiary of Parent ("Merger Sub"), and
the Company  have  entered  into an  Agreement  and Plan of Merger (the  "Merger
Agreement"),  pursuant to which Merger Sub will merge with and into the Company,
and the Company will become a wholly-owned  subsidiary of Parent (the "Merger");
and

         WHEREAS,  the Merger constitutes a Change in Control (as defined in the
Employment  Agreement)  and Executive  and the Company have  mutually  agreed to
terminate the Employment  Agreement and Executive's  employment with the Company
without  further  obligation  of either  party under the  Employment  Agreement,
effective as of the effective time of the Merger (the "Effective Time").

         NOW,  THEREFORE,  for and in  consideration  of the  mutual  covenants,
agreements,  and  promises  set forth  herein,  and for other good and  valuable
consideration  the receipt  and  sufficiency  of which are hereby  acknowledged,
Executive and the Company hereby agree as follows:

         1. Termination.  The parties hereby represent and warrant that prior to
the Effective Time,  Executive's  employment  relationship  with the Company was
pursuant  to and  governed  solely  by  the  Employment  Agreement.  Executive's
employment  with the  Company is hereby  terminated  as of the  Effective  Time.
Executive further agrees to and does hereby resign effective as of the Effective
Time  from any  other  appointments  or  positions  which  he may hold  with the
Company,  including,  without  limitation,  his  position  as a director  and/or
officer of the Company.  Executive agrees to execute all further documents which
Parent  or  the  Company  may  reasonably  request  of him  to  effectuate  such
resignations.

                                       1

<PAGE>



         2.  Termination  Consideration.  In connection with such termination of
employment  and the execution of this  Agreement,  the Company shall cause to be
paid to  Executive a one- time cash  payment of  $__________  (such amount being
comprised of severance in the amount of $___________ and a transaction  bonus of
$____________)  (the  "Severance  Payment").  In addition,  in full and complete
satisfaction  of  the  Company's   obligation  to  indemnify  (however  arising)
Executive from and against any taxes imposed on Executive by Section 4999 of the
Internal Revenue Code of 1986, as amended, the Company shall cause to be paid to
Executive a cash  payment of  $_____________  (collectively  with the  Severance
Payment,  the  "Termination  Payment") at the  Effective  Time.  Delivery of the
Termination  Payment to Executive is conditioned upon the delivery and execution
by  Executive of (i) this  Agreement  on the date the Merger  Agreement is fully
executed  by all  parties  thereto;  and (ii)  the  Addendum  to this  Agreement
attached hereto as Exhibit A (the  "Addendum") at the Closing (as defined in the
Merger  Agreement).  The  Company  shall  make the  Termination  Payment  at the
Effective  Time, but Executive  shall not be entitled to receive the Termination
Payment  unless and until the Company  receives each document  described in this
paragraph 2 duly executed by Executive.

         3. Taxes.  The  termination  consideration  set forth in paragraph 2 of
this  Agreement  shall  be  subject  to  applicable  federal,  state  and  local
withholding  taxes.  Executive  agrees that,  to the extent that any  individual
federal,  state  or local  income  or  excise  taxes of any kind may be due as a
result of any such payment to Executive,  Executive shall be solely  responsible
for such taxes and will indemnify,  defend, and hold harmless the Company in the
event there is any claim against the Company for such taxes.

         4. General Release and Covenant Not to Sue.  EFFECTIVE AT THE EFFECTIVE
TIME,  EXECUTIVE,  ON BEHALF OF  HIMSELF,  AND TO THE EXTENT HE HAS THE POWER OR
AUTHORITY TO DO SO, HIS FAMILY,  ATTORNEYS,  HEIRS, ESTATE,  AGENTS,  EXECUTORS,
REPRESENTATIVES,  ADMINISTRATORS  AND EACH OF THEIR  RESPECTIVE  SUCCESSORS  AND
ASSIGNS  (TOGETHER,  THE "EXECUTIVE  PARTIES"),  HEREBY  GENERALLY  RELEASES AND
FOREVER  DISCHARGES,  THE  COMPANY,  PARENT,  MERGER SUB,  AND THEIR  RESPECTIVE
PREDECESSORS, SUCCESSORS, ASSIGNS, PARENTS, SUBSIDIARIES AND AFFILIATES AND EACH
OF THE FOREGOING  ENTITIES'  RESPECTIVE PAST,  PRESENT AND FUTURE  SHAREHOLDERS,
DIRECTORS, OFFICERS, EMPLOYEES, AGENTS, REPRESENTATIVES,  PRINCIPALS,  INSURERS,
ATTORNEYS,   EMPLOYEE  BENEFIT  PROGRAMS  (AND  THE  TRUSTEES,   ADMINISTRATORS,
FIDUCIARIES, REPRESENTATIVES, COMMITTEES AND INSURERS OF SUCH PROGRAMS) IN THEIR
RESPECTIVE  CAPACITIES AS SUCH, AND ANY PERSON ACTING BY,  THROUGH,  UNDER OR IN
CONCERT WITH ANY OF THE FOREGOING ENTITIES (TOGETHER THE "COMPANY PARTIES") FROM
ANY AND ALL CLAIMS, COMPLAINTS,  CHARGES, DEMANDS, LIABILITIES,  SUITS, DAMAGES,
LOSSES, EXPENSES, ATTORNEYS' FEES, OBLIGATIONS OR CAUSES OF ACTION (COLLECTIVELY
"CLAIMS"), KNOWN OR UNKNOWN OF ANY KIND AND EVERY NATURE WHATSOEVER, AND WHETHER
OR NOT  ACCRUED  OR  MATURED,  WHICH  ANY OF THEM MAY  HAVE,  ARISING  OUT OF OR
RELATING  TO  EXECUTIVE'S  EMPLOYMENT  BY  THE  COMPANY  OR  INVESTMENT  IN,  OR
RELATIONSHIP OR DEALING WITH, THE COMPANY OR EXECUTIVE'S SERVICES AS AN OFFICER,
DIRECTOR OR EMPLOYEE OF THE COMPANY OR OTHERWISE  RELATING TO THE TERMINATION OF

                                        2

<PAGE>



SUCH  EMPLOYMENT  OR SERVICES,  AT ANY TIME PRIOR TO AND INCLUDING THE EFFECTIVE
TIME. THIS RELEASE  INCLUDES BUT IS NOT LIMITED TO ANY CLAIMS AGAINST ANY OF THE
COMPANY  PARTIES  BASED ON,  RELATING TO OR ARISING  UNDER  WRONGFUL  DISCHARGE,
RETALIATION,  BREACH  OF  CONTRACT  (WHETHER  ORAL  OR  WRITTEN),  TORT,  FRAUD,
DEFAMATION,  SLANDER, BREACH OF PRIVACY, VIOLATION OF PUBLIC POLICY, NEGLIGENCE,
PROMISSORY  ESTOPPEL,  TITLE  VII OF THE  CIVIL  RIGHTS  ACT OF  1964,  THE  AGE
DISCRIMINATION  IN EMPLOYMENT  ACT, THE  AMERICANS  WITH  DISABILITIES  ACT, THE
EMPLOYEE RETIREMENT INCOME SECURITY ACT, OR ANY OTHER FEDERAL,  COMMON, STATE OR
LOCAL LAW RELATING TO EMPLOYMENT (OR UNEMPLOYMENT), THE PAYMENT OF WAGES, SALARY
OR OTHER  COMPENSATION,  CIVIL OR HUMAN RIGHTS,  OR DISCRIMINATION IN EMPLOYMENT
(BASED ON AGE OR ANY OTHER  FACTOR) IN ALL CASES  ARISING  OUT OF OR RELATING TO
EXECUTIVE'S  EMPLOYMENT  BY THE  COMPANY  OR  INVESTMENT  IN THE  COMPANY OR HIS
SERVICES AS AN  OFFICER,  DIRECTOR OR  EMPLOYEE  OF THE  COMPANY,  OR  OTHERWISE
RELATING TO THE TERMINATION OF SUCH EMPLOYMENT OR SERVICES;  PROVIDED,  HOWEVER,
THAT THIS GENERAL RELEASE WILL NOT LIMIT OR RELEASE (I) EXECUTIVE'S RIGHTS UNDER
THIS AGREEMENT,  (II) EXECUTIVE'S RIGHTS TO INDEMNIFICATION  FROM THE COMPANY IN
RESPECT OF HIS  SERVICES  AS A  DIRECTOR,  OFFICER OR EMPLOYEE OF THE COMPANY AS
PROVIDED BY HIS INDEMNIFICATION AGREEMENT WITH THE COMPANY, BY PROVISIONS OF THE
MERGER AGREEMENT, BY LAW, OR BY THE CERTIFICATE OF INCORPORATION OR BY- LAWS (OR
LIKE  CONSTITUTIVE  DOCUMENTS)  OF THE  COMPANY,  INCLUDING  WITHOUT  LIMITATION
EXECUTIVE'S  RIGHTS TO, AND COVERAGE UNDER,  DIRECTORS' AND OFFICERS'  LIABILITY
INSURANCE  MAINTAINED  BY  THE  COMPANY,  (III)  EXECUTIVE'S  RIGHT  TO  RECEIVE
CONSIDERATION  IN  CONNECTION  WITH THE MERGER AS  PROVIDED  IN ARTICLE 2 OF THE
MERGER AGREEMENT, OR (IV) EXECUTIVE'S ENTITLEMENT,  IF ANY, TO CONTINUED MEDICAL
AND DENTAL  INSURANCE  COVERAGE UNDER AND PURSUANT TO THE  CONSOLIDATED  OMNIBUS
BUDGET RECONCILIATION ACT OF 1985. IN FURTHERANCE OF THIS RELEASE, EXECUTIVE, ON
BEHALF OF HIMSELF AND, TO THE EXTENT HE HAS THE POWER OR AUTHORITY TO DO SO, THE
EXECUTIVE  PARTIES,  HEREBY COVENANTS  FOREVER NOT TO ASSERT,  FILE,  PROSECUTE,
COMMENCE, INSTITUTE (OR SPONSOR OR PURPOSELY FACILITATE ANY PERSON IN CONNECTION
WITH THE  FOREGOING),  ANY CLAIMS,  BEFORE OR WITH ANY COURT OR ANY  ARBITRAL OR
ADMINISTRATIVE AUTHORITY, AGAINST ANY OF THE COMPANY PARTIES, AND REPRESENTS AND
WARRANTS  THAT NO OTHER PERSON OR ENTITY HAS  INITIATED OR, TO THE EXTENT WITHIN
HIS CONTROL,  WILL  INITIATE  ANY SUCH CLAIMS ON HIS BEHALF,  AND THAT IF SUCH A
CLAIM IS INITIATED, EXECUTIVE SHALL ACCEPT NO BENEFIT THEREFROM.

         5. Additional Agreement. Executive hereby agrees to sign and deliver to
Parent the Addendum at the Closing (as defined in the Merger Agreement).

                                       3

<PAGE>

         6. Confidentiality Obligations.

            (a)  Executive  hereby  acknowledges  that  all  trade  secrets  and
confidential or proprietary information of the Company (collectively referred to
herein as "Confidential  Information")  constitute valuable,  special and unique
assets of the Company's  business.  Executive  agrees that  Executive  will hold
Confidential Information in strict confidence and will not publish,  disseminate
or  otherwise  disclose,  directly or  indirectly,  to any person other than the
Company and Parent and their respective officers,  directors and employees,  any
Confidential Information or use any Confidential Information for Executive's own
personal benefit or for the benefit of anyone other than the Company and Parent.

            (b) For purposes of this paragraph 6, it is agreed that Confidential
Information  includes,   without  limitation,   any  information  heretofore  or
hereafter  acquired,  developed  or used by the  Company  relating  to  Business
Opportunities  or  Intellectual  Property  (as  hereinafter  defined)  or  other
geological,  geophysical,  economic,  financial  or  management  aspects  of the
business, operations,  properties or prospects of the Company whether oral or in
written  form,  whether or not included in the  Company's  Business  Records (as
hereinafter defined), but shall exclude any information which has become part of
common  knowledge or  understanding  in the oil and gas industry or otherwise in
the public domain (other than from  disclosure by Executive in violation of this
Agreement  or of  Executive's  obligations  under  applicable  law) or has  been
disclosed to any third parties on a non-confidential basis by the Company or any
of its representatives;  provided,  however,  that this paragraph 6 shall not be
applicable  to the extent  Executive  is  required  to testify in a judicial  or
regulatory proceeding, or to produce documents, pursuant to the order of a judge
or  administrative  law judge after  Executive has given the Company  reasonable
notice and opportunity to seek relief from such requirement.  The term "Business
Opportunities"  shall mean all business  ideas,  prospects,  proposals and other
opportunities  pertaining to the lease,  acquisition,  exploration,  production,
gathering or marketing of hydrocarbons  and related products and the exploration
potential of geographical areas on which hydrocarbon  exploration  prospects are
located, which have been:

                    (i) developed by Executive  during the period that Executive
has been employed by the Company, or

                    (ii)  originated  by any  third  party  and  brought  to the
attention of Executive during his employment with the Company.

The term "Intellectual Property" shall mean all ideas, inventions,  discoveries,
processes,  designs,  methods,  substances,  articles,  computer  programs,  and
improvements  (including,  without  limitation,   enhancements  to,  or  further
interpretation  or  processing  of,  information  that was in the  possession of
Executive prior to his employment  with the Company),  whether or not patentable
or  copyrightable,   which  do  not  fall  within  the  definition  of  Business
Opportunities,  which have been discovered,  conceived,  invented,  created,  or
developed by  Executive,  alone or with others,  during the term of  Executive's
employment with the Company if such discovery, conception,  invention, creation,
or  development  (i) occurred in the course of Executive's  employment  with the
Company, or (ii) occurred with the use of any of the Company's time,  materials,
or facilities,  or (iii) in the reasonable  opinion of the Board of Directors of
the  Company,  relates  or  pertains  in  any  way to  the  Company's  purposes,
activities, or affairs.


                                        4

<PAGE>



         7.  Non-Compete  Obligations.  The  purpose of the  provisions  of this
paragraph 7 are to protect the Company from unfair loss of goodwill and business
advantage and to shield Executive from pressure to use or disclose  Confidential
Information or to trade on the goodwill  belonging to the Company.  Accordingly,
during the Post Termination Non-Compete Term (as hereinafter defined), Executive
will not engage or  participate  in any manner,  whether  directly or indirectly
through  any  family  member or as an  employee,  employer,  consultant,  agent,
principal, partner, shareholder,  officer, director, licensor, lender, lessor or
in any other individual or representative  capacity, in any business or activity
which is engaged in  leasing,  acquiring,  exploring,  producing,  gathering  or
marketing  hydrocarbons and related products within the boundaries of, or within
a 20-mile  radius of the  boundaries  of, any mineral  property  interest of the
Company  (including,  without  limitation,  interests  under  a  mineral  lease,
overriding royalty interest,  production payment, net profits interest,  mineral
fee interest, or option or right to acquire any of the foregoing,  or an area of
mutual  interest as designated  pursuant to contractual  agreements  between the
Company  and any third  party) and  located in any of Lea  County,  New  Mexico;
Gaines County, Texas; Dawson County, Montana; or Latimer,  Pittsburg,  Canadian,
McClain or Grady Counties,  Oklahoma;  provided, however, that, this paragraph 7
shall not preclude Executive from (i) making personal  investments in securities
of oil and gas  companies if the  aggregate  amount  owned by Executive  and all
family members and affiliates  does not exceed 5% of such company's  outstanding
equity  securities,  or (ii)  serving as a director,  officer or employee of any
company (and its  successors),  if the  aggregate  amount of  securities of such
company owned by Executive and all family members and affiliates does not exceed
5% of such company's  outstanding equity securities.  The term "Post Termination
Non-Compete Term" means the one-year period following the Effective Time.

         8. Business Records.

            (a)  Executive  agrees to  promptly  deliver to the Company no later
than the Effective Time, all documents  relating to the business of the Company,
including,  without  limitation:  all  geological  and  geophysical  reports and
related data such as maps, charts, logs, seismographs, seismic records and other
reports  and related  data,  calculations,  summaries,  memoranda  and  opinions
relating to the  foregoing,  production  records,  electronic  logs,  core data,
pressure data, lease files, well files and records, land files, abstracts, title
opinions, title or curative matters,  contract files, notes, records,  drawings,
manuals, correspondence,  financial and accounting information,  customer lists,
statistical data and compilations, patents, copyrights, trademarks, trade names,
inventions, formulae, methods, processes, agreements, contracts, manuals and any
other  documents  relating to the  business of the  Company  (collectively,  the
"Company's Business Records"), and all copies thereof and therefrom.

            (b) Executive  confirms that all of the Company's  Business  Records
(and all copies thereof and therefrom)  that are required to be delivered to the
Company  pursuant to this paragraph 8 constitute  the exclusive  property of the
Company.

                                       5

<PAGE>

            (c) The obligation of confidentiality set forth in paragraph 6 above
shall continue notwithstanding Executive's delivery of any such documents to the
Company.

         9. Employment Agreements.  Each of the Company and Executive represents
and  warrants  that the  Employment  Agreement  and any  amendments  thereto are
attached as exhibits to this Agreement.

         10. False Claims Representations/Cooperation. Executive represents that
he has disclosed to the Company and Parent any information he has concerning any
conduct involving the Company which he has any reason to believe may be unlawful
or to involve any false claims to any United States  governmental  agency.  From
and after the  Effective  Time,  Executive  promises to  cooperate  fully in any
investigation Parent or the Company undertakes into matters occurring during his
employment  with the  Company.  From and after  the  Effective  Time,  Executive
further  agrees to  cooperate  with  Parent  and/or the  Company  as  reasonably
requested by Parent and/or the Company by  responding  to  questions,  attending
depositions, administrative proceedings and court hearings, executing documents,
and  cooperating  with Parent and/or the Company and its  accountants  and legal
counsel with respect to business  issues,  and/or claims and litigation of which
he has  personal or  corporate  knowledge.  From and after the  Effective  Time,
Executive  further  agrees,  except as required by subpoena or other  applicable
legal process (after Parent and/or the Company has been given reasonable  notice
and opportunity to seek relief from such  requirement),  to maintain,  in strict
confidence,  any information of which he has knowledge  regarding current and/or
future claims,  administrative  proceedings and  litigation.  From and after the
Effective  Time,  Executive  agrees,  except as  required  by  subpoena or other
applicable  legal  process  (after  Parent  and/or  the  Company  has been given
reasonable notice and opportunity to seek relief from such requirement),  not to
communicate with any party(ies), their legal counsel or others adverse to Parent
and/or the Company in any such claims,  administrative proceedings or litigation
except through Parent's and/or the Company's designated legal counsel.  From and
after the  Effective  Time,  Executive  also shall  make  himself  available  at
reasonable times and upon reasonable notice to answer questions or provide other
information  within his  possession  and  requested by Parent and/or the Company
relating  to Parent  and/or the  Company  and their  subsidiaries  and/or  their
respective   operations  in  order  to  facilitate  the  smooth   transition  of
Executive's duties to his successor;  provided,  however, Executive shall not be
required to spend any  particular  amount of time on behalf of Parent and/or the
Company.  Parent and/or the Company shall reimburse Executive for any documented
out-of-pocket  expenses,  including  but not limited to  reasonable  legal fees,
reasonably  incurred by Executive in complying with this paragraph 10, and shall
pay Executive a per diem amount,  calculated  based on  Executive's  annual base
salary in effect  immediately  prior to the Effective Time, for any periods that
Executive makes himself  available to Parent and/or the Company  pursuant to the
foregoing provisions of this paragraph 10.

         11. Mail.  From and after the Effective  Time, the Company may open and
answer,  and authorize others to open and answer, all mail  communications,  and
other  correspondence  addressed to Executive  relating to Parent,  the Company,
Merger Sub, or any of their respective subsidiaries or to Executive's employment


                                        6

<PAGE>



with  the  Company,  and  Executive  shall  promptly  refer to the  Company  all
inquiries,  mail communications,  and correspondence received by him relating to
Parent, the Company,  Merger Sub, or any of their respective  subsidiaries or to
Executive's  employment with the Company.  If any such mail,  communications  or
correspondence  received by the Company includes any threat of any claim against
Executive  personally,  the Company shall promptly notify Executive thereof. The
Company will promptly  forward to Executive any of  Executive's  personal  mail,
communications or correspondence received by the Company, unopened to the extent
it is reasonably ascertained to be of a personal nature.

         12.  Notices.  Any notice required or permitted by this Agreement shall
be in writing,  sent by registered or certified mail, return receipt  requested,
addressed  to the  Board of  Directors  of the  Company  at the  Company's  then
principal office, or to Executive at the address set forth on the signature page
hereof,  as the case may be, or to such other  address or addresses as any party
hereto may from time to time  specify in  writing  for that  purpose in a notice
given to the other party in compliance  with this paragraph 12. Notices shall be
deemed given when received.

         13.  Certain  Acknowledgements.   Executive  acknowledges  that  before
entering  into this  Agreement  he has had the  opportunity  to consult  with an
attorney or other advisor of his choice,  and has done so, and has not relied in
connection  herewith on legal  counsel for the Company.  Executive  acknowledges
that he has  entered  into  this  Agreement  of his own free  will,  and that no
promises or representations have been made to him by any person to induce him to
enter into this Agreement other than the terms expressly set forth herein.

         14.  Prior  Agreements.  This  Agreement  integrates  the  whole of all
agreements  and  understandings  of any sort or  character  between  the parties
concerning  the  subject  matter of this  Agreement,  and  supersedes  all prior
negotiations,  discussions, or agreements of any sort whatsoever relating to the
subject matter  hereof.  Further,  all prior  employment  contracts  between the
parties are superseded by this Agreement.  There are no unwritten oral or verbal
understandings,  agreements, or representations, of any sort whatsoever, between
Executive  and the  Company  relating  to the subject  matter  hereof,  it being
stipulated that the rights of the parties shall be governed  exclusively by this
Agreement.

         15. Modification.  This Agreement may not be modified or amended except
in writing signed by the parties. No term or condition of this Agreement will be
deemed to have been waived except in writing by the party charged with waiver. A
waiver shall operate only as to the specific  term or condition  waived and will
not  constitute  a waiver  for the  future or act on  anything  other  than that
specifically waived.

         16.  Counterparts.  This  Agreement  may be  executed  in any number of
counterparts,  each of which  shall be an  original,  but all of which  together
shall constitute one and the same instrument.  Any counterpart of this Agreement
that has  attached to it separate  signature  pages which  together  contain the
signatures  of all  parties  hereto  shall  for all  purposes  be deemed a fully
executed original. Facsimile signatures shall constitute original signatures.

         17.  Successor  and  Assigns.  All the  terms  and  provisions  of this
Agreement  shall be binding upon and inure to the benefit of the parties  hereto
and to the respective  successors and permitted assigns.  Neither this Agreement
nor any rights or obligations hereunder may be assigned by Executive, other than
by will or the laws of descent or distribution, or the Company.

                                       7
<PAGE>

         18.  Severability.  All provisions of this Agreement are intended to be
severable. In the event any provision or restriction contained herein is held to
be invalid or  unenforceable  in any respect,  in whole or in part, such finding
shall in no way affect the validity or  enforceability of any other provision of
this  Agreement.  The  parties  hereto  further  agree that any such  invalid or
unenforceable provision shall be deemed modified so that it shall be enforced to
the greatest extent  permissible  under law, and to the extent that any court or
arbitrator of competent  jurisdiction  determines any  restriction  herein to be
unreasonable in any respect, such court or
arbitrator  may limit this  Agreement  to render it  reasonable  in light of the
circumstances  in  which  it is  entered  into  and  specifically  enforce  this
Agreement as limited.

         19. Indemnification.  EXECUTIVE AGREES, WARRANTS, AND REPRESENTS TO THE
COMPANY,  PARENT AND MERGER SUB THAT  EXECUTIVE  HAS FULL  EXPRESS  AUTHORITY TO
RELEASE  AND SETTLE  ALL CLAIMS  THAT ARE THE  SUBJECT  OF  PARAGRAPH  4 OF THIS
AGREEMENT  AND THAT  EXECUTIVE  HAS NOT GIVEN OR MADE ANY  ASSIGNMENT TO ANYONE,
INCLUDING,  BUT NOT LIMITED TO, THE EXECUTIVE PARTIES, OF ANY CLAIMS AGAINST ANY
PERSON OR ENTITY  ASSOCIATED  WITH ANY COMPANY  PARTIES.  TO THE EXTENT THAT ANY
CLAIMS RELATED TO THIS AGREEMENT MAY BE BROUGHT BY PERSONS OR ENTITIES  CLAIMING
BY,  THROUGH OR UNDER  EXECUTIVE,  INCLUDING,  BUT NOT LIMITED TO, THE EXECUTIVE
PARTIES,  THEN EXECUTIVE FURTHER AGREES TO INDEMNIFY,  DEFEND, AND HOLD HARMLESS
ANY COMPANY  PARTY,  ITS AGENTS,  AND ITS  SUCCESSORS  FROM ANY LAWSUIT OR OTHER
PROCEEDING,  JUDGMENT, OR SETTLEMENT ARISING FROM SUCH CLAIMS. EXECUTIVE FURTHER
HEREBY ASSIGNS TO THE COMPANY ALL CLAIMS COVERED BY PARAGRAPH 4 HEREOF.

         20. Injunction. Executive hereby expressly acknowledges that any breach
or threatened  breach by him of any of his  obligations set forth in paragraph 4
(General  Release  and  Covenant  Not  to  Sue),  paragraph  6  (Confidentiality
Obligations)  and paragraph 7  (Non-Compete  Obligations)  of this Agreement may
result in significant and continuing  injury and irreparable  harm to Parent and
the  Company,  the monetary  value of which would be  impossible  to  establish.
Therefore,  Executive  agrees that  Parent and the Company  shall be entitled to
injunctive  relief in a court of appropriate  jurisdiction  with respect to such
provisions. Further, if Executive violates the covenants and restrictions herein
and the Company  brings legal action for injunctive or other  equitable  relief,
Executive  agrees that the  Company  shall not be deprived of the benefit of the
full period of the  restrictive  covenant,  as a result of the time  involved in
obtaining such relief. Accordingly, Executive agrees that the provisions in this
paragraph  20 shall have a duration  determined  pursuant to  paragraph 7 above,
computed  from the date the relief is granted.  The parties  further  agree that
this  provision  is a  material  inducement  to the  Company  to enter into this
Agreement.

         21. Choice of Law. This Agreement shall be governed by and construed in
accordance  with the laws of the State of  Oklahoma  (without  giving  effect to
principles  of conflict of law) and,  where  applicable,  the laws of the United
States.

         22. No Right to Additional  Compensation.  Except as expressly provided
in this  Agreement  or as provided in the Merger  Agreement,  from and after the
Effective  Time,  neither  Parent,  the  Company,  Merger Sub,  nor any of their


                                        8

<PAGE>

predecessors,   successors,   assigns  or  affiliates  shall  have  any  further
obligation  to  Executive  in  connection  with  the  Employment   Agreement  or
Executive's employment by the Company, including, but not limited to, severance,
compensation (including,  but not limited to, deferred compensation,  employment
contracts,  stock options,  bonuses and  commissions),  health  insurance,  life
insurance,  disability insurance,  club dues, vehicle allowances,  vacation pay,
sick pay and any similar obligations.

         23.  No  Admission.  The  parties  agree  that by  entering  into  this
Agreement,  no party  admits to having  engaged  in any  unlawful,  wrongful  or
unconscionable conduct, any such conduct being expressly denied.

         24. Construction.  The parties agree that this Agreement was negotiated
by the parties and shall not be construed against any party. As used herein, the
term "affiliate"  shall have the meaning given such term in Rule 405 promulgated
under the Securities Act of 1933.

         25.  Arbitration.  Except  with  respect  to  the  provisions  of  this
Agreement  relating to injunctive and other equitable relief,  the parties agree
to  submit to  binding  arbitration  administered  by the  American  Arbitration
Association under its National Rules for Resolution of Employment  Disputes (the
"Arbitration")  any and all  disputes  relating to or arising  from  Executive's
employment with the Company,  the termination  thereof, the Employment Agreement
or this Agreement.  The arbitrator  shall be qualified to hear  employment/labor
matters. Each party shall be responsible for its respective costs and attorneys'
fees incurred in connection with the Arbitration, and the Arbitration fees shall
be divided equally between Executive,  on the one hand, and the Company,  on the
other hand. The decision of the  Arbitrator  shall be binding on the parties and
not subject to appeal.  Except to the extent  required by law,  the  Arbitration
result shall be kept confidential.

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

                                        9

<PAGE>




         IN WITNESS  WHEREOF,  the  Company  has  caused  this  Agreement  to be
executed in its corporate name by an officer thereof  thereunto duly authorized,
and Executive has hereunto set his hand on the day and year first above written.



                              HOME-STAKE OIL & GAS COMPANY



                              By:
                                 -----------------------------------------
                              Name:
                                   ---------------------------------------
                              Title:
                                    --------------------------------------









                              CHRIS K. CORCORAN

                              Address:
                                      ------------------------------------

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

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







                    [SIGNATURE PAGE TO SEPARATION AGREEMENT]

<PAGE>


                                    EXHIBIT A

                        ADDENDUM TO SEPARATION AGREEMENT

         This Addendum to Separation Agreement (this "Addendum") supplements the
Separation  Agreement between Chris K. Corcoran (the "Executive") and Home-Stake
Oil & Gas Company,  an Oklahoma  corporation (the "Company"),  dated October __,
2000 (the "Separation  Agreement").  All capitalized  terms used herein that are
not defined  herein but are defined in the Separation  Agreement  shall have the
meanings assigned to them in the Separation Agreement.

         Executive  hereby agrees that paragraph 4 (General Release and Covenant
Not to Sue) of the  Separation  Agreement  applies  with  respect to all Claims,
known or unknown of any kind and every  nature  whatsoever,  and  whether or not
accrued or matured, which any of the Company Parties may have, arising out of or
relating  to  Executive's  employment  by  the  Company  or  investment  in,  or
relationship or dealing with, the Company or Executive's services as an officer,
director or employee of the Company or otherwise  relating to the termination of
such  employment  or services,  at any time prior to and including the Effective
Time.

         Executive  acknowledges  that the  provisions  of this  Addendum are in
addition to, and do not supercede, the provisions in the Separation Agreement.

         IN WITNESS WHEREOF,  Executive has hereunto set his hand, this ____ day
of _______________, 2000.






                                              ------------------------------
                                              CHRIS K. CORCORAN



<PAGE>
                                                                    Exhibit C


                       AMENDMENT NO. 1 TO RIGHTS AGREEMENT


         This  Amendment  No. 1 to  Rights  Agreement  (this  "Rights  Agreement
Amendment"),  dated as of October ___,  2000,  is between  Home-Stake  Oil & Gas
Company,  an Oklahoma  corporation  (the  "Corporation),  and UMB Bank, N.A., as
Rights Agent (the "Rights Agent").

                                    RECITALS

         WHEREAS,  the  Corporation and the Rights Agent are parties to a Rights
Agreement, dated as of January 3, 2000 (the "Rights Agreement"); and

         WHEREAS,  concurrently  herewith,  the  Corporation,  Cortez Oil & Gas,
Inc., a Delaware  corporation  ("Parent"),  and Cortez Acquisition  Company,  an
Oklahoma  corporation ("Parent Sub"), are entering into an Agreement and Plan of
Merger of even date herewith (the "Merger Agreement"),  pursuant to which Parent
Sub will merge with and into the Corporation (the "Merger"); and

         WHEREAS,  Parent and Parent Sub are entering into the Merger  Agreement
in  reliance  on and in  consideration  of the  terms of this  Rights  Agreement
Amendment; and

         WHEREAS,  pursuant to Sections 27 and 28 of the Rights  Agreement,  the
Board of Directors of the  Corporation  has determined  that an amendment to the
Rights  Agreement as set forth herein is necessary  and  desirable in connection
with the foregoing and the  Corporation  and the Rights Agent desire to evidence
such amendment in writing.

         NOW, THEREFORE, in consideration of the mutual covenants and agreements
herein contained and other good and valuable consideration,  and intending to be
legally  bound hereby,  the  Corporation  hereby amends the Rights  Agreement as
follows:

         1. Amendment of Section 1(a).  Section 1(a) of the Rights  Agreement is
amended to add the following sentence at the end thereof:

                  "Notwithstanding  anything  in this  Rights  Agreement  to the
         contrary,  neither  Parent  nor  Parent  Sub  shall be  deemed to be an
         Acquiring  Person  solely  by  virtue  of (i) the  consummation  of the
         Merger,  (ii) the  execution  of the  Merger  Agreement,  or (iii)  the
         execution of the Stock Voting Agreements."

         2. Amendment of Section 1(v).  Section 1(v) of the Rights  Agreement is
amended to add the following sentence at the end thereof:

                  "Notwithstanding  anything  in this  Rights  Agreement  to the
         contrary,  a  Shares  Acquisition  Date  shall  not be  deemed  to have
         occurred  solely as the result of (i) the  consummation  of the Merger,
         (ii) the execution of the Merger  Agreement,  or (iii) the execution of
         the Stock Voting Agreements."


                                        1

<PAGE>



         3. Amendment of Section 1. Section 1 of the Rights Agreement is amended
to add the following at the end thereof:

                  (z)      "Merger" shall mean the merger of the Corporation and
                           Parent Sub pursuant to the Merger Agreement.

                  (aa)     "Merger  Agreement" shall mean that certain Agreement
                           and Plan of Merger, dated as of October ___, 2000, by
                           and between the Corporation, Parent and Parent Sub.

                  (bb)     "Parent"  shall  mean  Cortez  Oil  &  Gas,  Inc.,  a
                           Delaware corporation.

                  (cc)     "Parent Sub" shall mean Cortez  Acquisition  Company,
                           an Oklahoma corporation.

                  (dd)     "Stock  Voting  Agreements"  shall mean the  separate
                           voting  agreements,  dated as of October  ___,  2000,
                           entered  into with Parent by certain of the  officers
                           and directors of the  Corporation in connection  with
                           the Merger."

         4. Amendment of Section 3(a).  Section 3(a) of the Rights  Agreement is
amended to add the following sentence at the end thereof:

                  "Notwithstanding  anything  in this  Rights  Agreement  to the
         contrary,  a  Distribution  Date  shall not be deemed to have  occurred
         solely as the result of (i) the  consummation  of the Merger,  (ii) the
         execution of the Merger Agreement,  or (iii) the execution of the Stock
         Voting Agreements."

         5.  Addition of Section 35. The parties  hereto hereby amend the Rights
Agreement by adding the following Section 35 to the Rights Agreement:

                  "Section 35.  Termination.  Simultaneously  with the effective
         time of the Merger, (i) the Rights Agreement shall be terminated and be
         without  any further  force or effect,  (ii) none of the parties to the
         Rights  Agreement  will have any  rights,  obligations  or  liabilities
         thereunder, provided, however, Section 18 of the Rights Agreement shall
         survive  termination of the Rights Agreement,  and (iii) the holders of
         the  Rights  shall not be  entitled  to any  benefits,  rights or other
         interests under the Rights Agreement,  including without limitation the
         right to purchase or otherwise acquire shares of the Preferred Stock or
         any other securities of the Corporation."

         6.  Effectiveness.  This  Rights  Agreement  Amendment  shall be deemed
effective as of the date first  written  above.  Except as amended  hereby,  the
Rights  Agreement  shall  remain in full force and effect and shall be otherwise
unaffected hereby.

         7.  Severability.  If any term,  provision,  covenant or restriction of
this Rights Agreement Amendment is held by a court of competent  jurisdiction or
other  authority  to be invalid,  void or  unenforceable,  the  remainder of the
terms, provisions, covenants and restrictions of this Rights Agreement Amendment


                                        2

<PAGE>



shall remain in full force and effect and shall in no way be affected,  impaired
or invalidated.

         8. Governing Law. This Rights Agreement Amendment shall be deemed to be
a contract  made under the laws of the State of  Oklahoma  and for all  purposes
shall be governed by and  construed  in  accordance  with the laws of such State
applicable  to contracts  made and to be performed  entirely  within such State,
except that all provisions  regarding the rights,  duties and obligations of the
Rights Agent shall be governed by and  construed in  accordance  with the law of
the State of Missouri  applicable to contracts made and to be performed entirely
within such State.

         9. Counterparts. This Rights Agreement Amendment may be executed in any
number of  counterparts,  each of such  counterparts  shall for all  purposes be
deemed to be an original,  and all such counterparts  shall together  constitute
but one and the same instrument.




                                        3

<PAGE>


         IN  WITNESS  WHEREOF,  the  parties  hereto  have  caused  this  Rights
Agreement Amendment to be duly executed by their respective authorized officers,
all as of the day and year first above written.

                             HOME-STAKE OIL & GAS COMPANY



                             By:
                                -----------------------------------------
                             Name:    Robert C. Simpson
                             Title:   Chief Executive Officer
                                      and President


                             UMB BANK, N.A.



                             By:
                                -----------------------------------------
                             Name:
                                  ---------------------------------------
                             Title:
                                   --------------------------------------





                 [SIGNATURE PAGE TO RIGHTS AGREEMENT AMENDMENT]

<PAGE>


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