EXHIBIT 10.1





                                CREDIT AGREEMENT

                                   dated as of

                                   May 2, 1996

                                      among

                          PATINA OIL & GAS CORPORATION,
                        SOCO WATTENBERG CORPORATION, and
                         GERRITY OIL & GAS CORPORATION,

                                  as Borrowers


             The Financial Institutions Listed on Schedule 1 hereto,
                                    as Banks

                    TEXAS COMMERCE BANK NATIONAL ASSOCIATION,
                            as Administrative Agent,

                           NATIONSBANK OF TEXAS, N.A.,
                              as Documentary Agent,

                                       and

                     WELLS FARGO BANK, N.A., CIBC, INC. and
                         CREDIT LYONNAIS NEW YORK BRANCH
                                  as Co-Agents







                                TABLE OF CONTENTS

                                      Page

ARTICLE I TERMS DEFINED.....................................................   1

         SECTION 1.1.  Definitions............................................ 1
         SECTION 1.2.  Accounting Terms and Determinations................... 25

ARTICLE II THE CREDIT FACILITIES............................................. 26

         SECTION 2.1.  Patina Term Commitment................................ 26
         SECTION 2.2.  Patina Revolving Commitment............................26
         SECTION 2.3.  Gerrity Revolving Commitment...........................28
         SECTION 2.4.  Method of Borrowing....................................29
         SECTION 2.5.  Method of Requesting Letters of Credit.................30
         SECTION 2.6.  Notes..................................................31
         SECTION 2.7.  Interest Rates; Payments...............................31
         SECTION 2.8.  Mandatory Prepayments of Patina Term Loan..............33
         SECTION 2.9.  Mandatory Termination of Commitments; Termination Date 
                       and Maturity.......................................... 33
         SECTION 2.10.  Mandatory Reduction of Patina Term Commitments........33
         SECTION 2.11.  Voluntary Reduction of Patina Commitments.............33
         SECTION 2.12.  Voluntary Reduction of Gerrity Commitments............33
         SECTION 2.13.  Voluntary Prepayments of Patina Term Loan.............34
         SECTION 2.14.  Application of Payments...............................34
         SECTION 2.15.  Commitment Fees Applicable to Revolvers...............34
         SECTION 2.16.  Commitment Fee Applicable to Patina Term Commitments..34
         SECTION 2.17.  Additional Fees Due on Patina Term Commitment 
                                   Termination Date.......................... 34
         SECTION 2.18.  Closing Fee...........................................34
         SECTION 2.19.  Patina Term Loan Funding Fee..........................34
         SECTION 2.20.  Agency and Other Fees.................................35

ARTICLE III GENERAL PROVISIONS................................................35

         SECTION 3.1.  Delivery and Endorsement of Notes......................35
         SECTION 3.2.  General Provisions as to Payments......................35
         SECTION 3.3.  Funding Losses.........................................36
         SECTION 3.4.  Foreign Lenders, Participants, and Assignees...........37

ARTICLE IV BORROWING BASE.....................................................37

         SECTION 4.1.  Reserve and Related Asset Report; Proposed Borrowing
                                            Base..............................37
         SECTION 4.2.  Determination of Patina Borrowing Base................ 37
         SECTION 4.3.  Special Determination of Patina Borrowing Base.........38
         SECTION 4.4.  Patina Borrowing Base Deficiency.......................38
         SECTION 4.5.  Initial Patina Borrowing Base..........................39
         SECTION 4.6.  Determination of Gerrity Borrowing Base................39
         SECTION 4.7.  Special Determination of Gerrity Borrowing Base and 
                         Gerrity Borrowing Base Ceiling.......................40
         SECTION 4.8.  Readjustment of Gerrity Borrowing Base.................40
         SECTION 4.9.  Gerrity Borrowing Base Deficiency......................41
         SECTION 4.10. Initial Gerrity Borrowing Base.........................41
         SECTION 4.11. Certain Agreements Regarding November 1, 1996 Periodic
                                            Determination.................... 41

ARTICLE V COLLATERAL..........................................................41




         SECTION 5.1.  Security...............................................41
         SECTION 5.2.  Guarantees.............................................43

ARTICLE VI CONDITIONS TO BORROWINGS ........................................  43

          SECTION 6.1.  Conditions to Initial Extension of Credit ..........  43
          SECTION 6.2.  Conditions to each Borrowing and each Letter 
                                                           of Credit .......  46
          SECTION 6.3.  Additional Conditions to the initial Borrowing under
                             the Patina Term Commitments ...................  47

ARTICLE VII REPRESENTATIONS AND WARRANTIES .................................  47

         SECTION 7.1.  Corporate Existence and Power .......................  47
         SECTION 7.2.  Existence and Power (Other Companies)................. 47
         SECTION 7.3.  Corporate, Limited Liability Company,Partnership
                          and Governmental Authorization; Contravention...... 48
         SECTION 7.4.  Binding Effect........................................ 48
         SECTION 7.5.  Financial Information................................. 48
         SECTION 7.6. Litigation............................................. 49
         SECTION 7.7.  ERISA................................................. 49
         SECTION 7.8.  Taxes and Filing of Tax Returns....................... 49
         SECTION 7.9.  Title to Properties; Liens............................ 49
         SECTION 7.10. Business; Compliance.................................. 50
         SECTION 7.11. Licenses, Permits, Etc................................ 50
         SECTION 7.12. Compliance with Law................................... 50
         SECTION 7.13. Ownership Interests................................... 50
         SECTION 7.14. Full Disclosure....................................... 50
         SECTION 7.15. Subsidiaries.......................................... 51
         SECTION 7.16.  Obligations of Unrestricted Subsidiaries............. 51
         SECTION 7.17.  Environmental Matters................................ 51
         SECTION 7.18.  Closing Documents.................................... 51
         SECTION 7.19.  Burdensome Obligations............................... 52
         SECTION 7.20.  Government Regulations............................... 52

ARTICLE VIII AFFIRMATIVE COVENANTS........................................... 52

         SECTION 8.1.  Information........................................... 52
         SECTION 8.2.  Business of Borrowers................................. 55
         SECTION 8.3.  Maintenance of Existence.............................. 55
         SECTION 8.4.  Title Data............................................ 55
         SECTION 8.5.  Right of Inspection................................... 55
         SECTION 8.6.  Maintenance of Insurance.............................. 55
         SECTION 8.7.  Payment of Taxes and Claims........................... 56
         SECTION 8.8.  Compliance with Laws and Documents.................... 56
         SECTION 8.9.  Operation of Properties and Equipment................. 56
         SECTION 8.10. Further Assurances.................................... 57
         SECTION 8.11. Environmental Law Compliance and Indemnity............ 57
         SECTION 8.12. Change of Control Offer............................... 58

ARTICLE IX NEGATIVE COVENANTS................................................ 58

         SECTION 9.1.  Debt of Borrowers and their Restricted Subsidiaries... 58
         SECTION 9.2.  Restricted Payments................................... 59
         SECTION 9.3.  Negative Pledge....................................... 59
         SECTION 9.4.  Consolidations and Mergers............................ 59
         SECTION 9.5.  Asset Dispositions.................................... 59
         SECTION 9.6.  Amendments to Material Documents.......................60



         SECTION 9.7.  Use of Proceeds........................................60
         SECTION 9.8.  Investments............................................60
         SECTION 9.9.  Transactions with Affiliates...........................60
         SECTION 9.10. Plans..................................................60
         SECTION 9.11. Oil and Gas Hedge Transactions.........................60
         SECTION 9.12. Obligations of Unrestricted Subsidiaries...............61
         SECTION 9.13. Acquisitions...........................................61
         SECTION 9.14. Operating Leases.......................................61
         SECTION 9.15. Speculative Hedge Transactions.........................61

ARTICLE X FINANCIAL COVENANTS................................................ 61

         SECTION 10.1.  Financial Covenants applicable to Patina on a 
                                   Consolidated Basis........................ 61
         SECTION 10.2.  Financial Covenants applicable to Patina on a 
                                   Consolidated Basis excluding Gerrity...... 62
         SECTION 10.3.  Financial Covenants Applicable to Gerrity on a
                                    Consolidated Basis....................... 62

ARTICLE XI DEFAULTS.......................................................... 62

         SECTION 11.1.  Events of Default.................................... 62

ARTICLE XII AGENTS........................................................... 65

         SECTION 12.1.  Appointment and Authorization........................ 65
         SECTION 12.2.  Agents and Affiliates................................ 65
         SECTION 12.3.  Action by Agents..................................... 65
         SECTION 12.4.  Consultation with Experts............................ 65
         SECTION 12.5.  Liability of Agents...................................66
         SECTION 12.6.  Delegation of Duties..................................66
         SECTION 12.7.  Indemnification.......................................66
         SECTION 12.8.  Credit Decision.......................................66
         SECTION 12.9.  Successor Agent.......................................66

ARTICLE XIII PROTECTION OF YIELD; CHANGE IN LAWS..............................67

         SECTION 13.1.  Basis for Determining Interest Rate Applicable to 
                                Eurodollar Tranches Inadequate............... 67
         SECTION 13.2.  Illegality of Eurodollar Loans....................... 67
         SECTION 13.3.  Increased Cost of Eurodollar Tranche................. 68
         SECTION 13.4.  Adjusted Base Rate Tranche Substituted for 
                               Affected Eurodollar Tranche................... 69
         SECTION 13.5.  Capital Adequacy..................................... 69



         SECTION 13.6.  Taxes................................................ 70
         SECTION 13.7.  Discretion of Banks as to Manner of Funding.......... 70

ARTICLE XIV MISCELLANEOUS.................................................... 70

         SECTION 14.1.  Notices.............................................. 70
         SECTION 14.2.  No Waivers........................................... 71
         SECTION 14.3.  Expenses;  Documentary Taxes; Indemnification........ 71
         SECTION 14.4.  Right and Sharing of Set-Offs........................ 71
         SECTION 14.5.  Amendments and Waivers............................... 72
         SECTION 14.6.  Survival............................................. 72
         SECTION 14.7.  Limitation on Interest............................... 72
         SECTION 14.8.  Invalid Provisions................................... 73
         SECTION 14.9.  Waiver of Consumer Credit Laws....................... 73
         SECTION 14.10. Successors and Assigns............................... 73
         SECTION 14.11. TEXAS LAW............................................ 74
         SECTION 14.12. Consent to Jurisdiction; Waiver of Immunities........ 74
         SECTION 14.13. Counterparts; Effectiveness.......................... 75
         SECTION 14.14. No Third Party Beneficiaries......................... 75
         SECTION 14.15. COMPLETE AGREEMENT................................... 75
         SECTION 14.16. WAIVER OF JURY TRIAL................................. 75





                                CREDIT AGREEMENT

     THIS CREDIT AGREEMENT (this  "Agreement") is entered into as of the 2nd day
of May,  1996,  among  Patina  Oil & Gas  Corporation,  a  Delaware  corporation
("Patina"),  SOCO  Wattenberg  Corporation,  a  Delaware  corporation  ("SWAT"),
Gerrity Oil and Gas Corporation,  a Delaware  corporation  ("Gerrity")  (Patina,
SWAT and Gerrity are each  individually  referred  to herein as  "Borrower"  and
collectively  as  "Borrowers"),  Texas  Commerce Bank National  Association,  as
Administrative Agent  ("Administrative  Agent"),  NationsBank of Texas, N.A., as
Documentary Agent ("Documentary  Agent"), Wells Fargo Bank, N.A., CIBC, Inc. and
Credit Lyonnais New York Branch,  as Co-Agents  ("Co-Agents")  and the financial
institutions  listed on  Schedule 1 hereto as Banks  (individually  a "Bank" and
collectively "Banks")

                               W I T N E S S E T H

     WHEREAS,  Patina and SWAT have requested that Banks provide Patina and SWAT
jointly with a term credit facility and a revolving credit facility, and Gerrity
has requested that Banks provide Gerrity with a revolving credit  facility,  and
Banks are willing to provide such credit  facilities  upon the terms and subject
to the conditions set forth herein.

     NOW,  THEREFORE,  in  consideration of the premises,  the  representations,
warranties,  covenants  and  agreements  contained  herein,  and other  good and
valuable   consideration,   the  receipt  and   adequacy  of  which  are  hereby
acknowledged, the Borrowers,  Administrative Agent, Documentary Agent, Co-Agents
and Banks agree as follows:

                                    ARTICLE I

                                  TERMS DEFINED

     SECTION  1.1.  Definitions.  The  following terms, as used herein, have the
following meanings:

     "Adjusted Base Rate" means, on any day, the greater of (a) the Base Rate in
effect on such day,  or (b) the sum of (i) the  Federal  Funds Rate in effect on
such day, plus (ii) one half of one percent  (.5%).  Each change in the Adjusted
Base  Rate  shall  become  effective  automatically  and  without  notice to any
Borrower or any Bank upon the effective date of each change in the Federal Funds
Rate or the Base Rate, as the case may be.

     "Adjusted Base Rate Tranche" means the portion of the principal of any Loan
bearing interest with reference to the Adjusted Base Rate.

     "Adjusted  Consolidated  EBITDA" means,  with respect to any Person for any
period,  Consolidated EBITDA of such Person for such period, adjusted to reflect
all revenues and expenses  (including lease operating expense,  severance Taxes,
additional  overhead and other  expenses)  attributable  to material oil and gas
properties  purchased by such Person or any of its Subsidiaries  after the first
day of such period as if such  properties  had been owned by such Person or such
Subsidiaries  on the  first  day of such  period.  As  used in this  definition,
"material oil and gas properties"  means oil and gas properties  purchased for a
purchase price of not less than $25,000,000.

     "Adjusted  Eurodollar Rate" applicable to any Interest Period, means a rate
per annum equal to the quotient obtained (rounded upwards, if necessary,  to the
next higher 1/16 of 1%) by dividing (a) the  applicable  Eurodollar  Rate by (b)
1.00 minus the Eurodollar Reserve Percentage.


                                        1


     "Administrative  Agent" means Texas  Commerce Bank National  Association in
its  capacity  as  Administrative  Agent for Banks  hereunder  or any  successor
thereto.

     "Affiliate"  means, as to any Person, any Subsidiary of such Person, or any
other Person which,  directly or indirectly,  controls,  is controlled by, or is
under common  control with,  such Person.  For the purposes of this  definition,
"control"  (including with correlative  meanings,  the terms "controlled by" and
"under common control with"), as used with respect to any Person, shall mean the
possession,  directly  or  indirectly,  of the  power to  direct  or  cause  the
direction of the  management  and policies of such Person,  whether  through the
ownership  of voting  securities  or  partnership  interests,  or by contract or
otherwise.

     "Agent" means any of the Administrative Agent, the Documentary Agent or any
Co-Agent, and "Agents" means the Administrative Agent, the Documentary Agent and
the Co-Agents collectively.

     "Agreement"  means this  Credit  Agreement,  including  the  Schedules  and
Exhibits hereto, as the same may be amended or supplemented from time to time.

     "Annualized"  means,  with respect to Adjusted  Consolidated  EBITDA of any
Person for a period of less than four (4) complete Fiscal Quarters, the Adjusted
Consolidated EBITDA of such Person for the number of complete Fiscal Quarters in
such period multiplied times a fraction,  the numerator of which is four (4) and
the  denominator  of which is the number of  complete  Fiscal  Quarters  in such
period.

     "Applicable  Environmental  Law" means any law, statute,  ordinance,  rule,
regulation, order or determination of any governmental authority or any board of
fire underwriters (or other body exercising  similar  functions),  affecting any
real or personal property owned,  operated or leased by any Company or any other
operation  of any  Company  in any  way  pertaining  to  health,  safety  or the
environment, including, without limitation, all applicable zoning ordinances and
building codes,  flood disaster laws and health,  safety and environmental  laws
and regulations, and further including without limitation, (a) the Comprehensive
Environmental Response,  Compensation,  and Liability Act of 1980, as amended by
the Superfund  Amendments and  Reauthorization Act of 1986 (as amended from time
to time,  herein  referred to as "CERCLA"),  (b) the Resource  Conservation  and
Recovery  Act of 1976,  as amended by the Used Oil  Recycling  Act of 1980,  the
Solid Waste  Recovery Act of 1976, as amended by the Solid Waste Disposal Act of
1980, and the Hazardous and Solid Waste Amendments of 1984 (as amended from time
to time,  herein  referred to as "RCRA"),  (c) the Safe  Drinking  Water Act, as
amended,  (d) the Toxic  Substances  Control Act, as amended,  (e) the Clean Air
Act, as amended,  (f) the Occupational Safety and Health Act of 1970, as amended
(g) the laws,  rules and regulations of any state having  jurisdiction  over any
real or personal property owned,  operated or leased by any Company or any other
operation of any Company which relate to health,  safety or the environment,  as
each may be amended from time to time,  and (h) any federal,  state or municipal
laws,  ordinances or regulations  which may now or hereafter  require removal of
asbestos or other hazardous  wastes or impose any liability  related to asbestos
or  other  hazardous  wastes.  The  terms  "hazardous  substance",  "petroleum",
"release" and "threatened  release" have the meanings  specified in CERCLA,  and
the terms  "solid  waste"  and  "disposal"  (or  "disposed")  have the  meanings
specified in RCRA;  provided,  however,  in the event  either  CERCLA or RCRA is
amended so as to broaden the meaning of any term defined  thereby,  such broader
meaning  shall apply  subsequent to the effective  date of such  amendment  with
respect to all provisions of this Agreement;  and provided  further that, to the
extent  the laws of the  state in which  any real or  personal  property  owned,
operated or leased by any Company is located  establish a meaning for "hazardous
substance", "petroleum", "release", "solid waste" or "disposal" which is broader
than that specified in either CERCLA or RCRA,  such broader  meaning shall apply
in so far as such broader meaning is applicable to the real or personal property
owned, operated or leased by such Company and located in such state.


                                        2


     "Applicable  Margin" means,  for purposes of determining  the interest rate
applicable to  outstanding  Loans during any Fiscal Quarter of any Borrower (the
"Subject  Quarter") (a) through and  including  the Fiscal  Quarter in which the
Total Patina Term  Commitment  is cancelled  and the Patina Term Loan is paid in
full,  the amount set forth in Table A below (based on the type of Loan and Type
of Tranche),  and (b) commencing  with the first Fiscal Quarter after the Fiscal
Quarter in which the Total Patina Term  Commitment  is cancelled  and the Patina
Term Loan is paid in full,  for both the Gerrity  Loan and the Patina  Revolving
Loan, the amount set forth in Table B below under the applicable Type of Tranche
and  opposite  the  applicable  Ratio of  Consolidated  Funded  Debt to Adjusted
Consolidated  EBITDA.  The Applicable Margin in effect pursuant to Table B below
during a Subject Quarter shall be calculated at the commencement of such Subject
Quarter based on the Ratio of Consolidated Funded Debt to Adjusted  Consolidated
EBITDA as of the last day of the Fiscal  Quarter  then most  recently  ended for
which  Patina  and  Gerrity  have  provided  to Banks the  financial  statements
required by Sections 8.1(b),  (d) and (f) hereof (in the case of the first three
(3) Fiscal Quarters of each Fiscal Year) or Sections 8.1(a),  (c) and (e) hereof
(in the case of the fourth Fiscal Quarter of each Fiscal Year).  Notwithstanding
the  foregoing,  in the event the Total Patina Term  Commitment is cancelled and
the Patina Term Loan is paid in full prior to September 30, 1996, the Applicable
Margin applicable to Adjusted Base Rate Tranches and Eurodollar  Tranches during
the Fiscal  Quarters  commencing  with the first Fiscal Quarter after the Fiscal
Quarter in which the Total Patina Term  Commitment  is cancelled  and the Patina
Term Loan is paid in full  through  and  including  the  Fiscal  Quarter  ending
December  31,  1996  shall be one fourth of one  percent  (.25%) and one and one
fourth percent (1.25%) respectively.




==========================================================================================================================
                                    TABLE A

- --------------------------------------------------------------------------------------------------------------------------
Loan                          Adjusted BaseRate Tranches              Eurodollar Tranches
- --------------------------------------------------------------------------------------------------------------------------
                                                                      

Gerrity Loan                            .25%                                1.25%
- --------------------------------------------------------------------------------------------------------------------------
Patina Revolving Loan                   .25%                                1.25%
- --------------------------------------------------------------------------------------------------------------------------
Patina Term Loan                        .75%*                               1.50%*
- --------------------------------------------------------------------------------------------------------------------------


     * provided, that the Applicable Margin otherwise in effect pursuant to this
Table A for each Adjusted Base Rate Tranche and Eurodollar  Tranche comprising a
part of the Patina Term Loan shall  increase  by one percent  (1%) on the Patina
Term Commitment Termination Date and by one-half of one percent (.5%) every six
(6) months thereafter.




==========================================================================================================================
                                     TABLE B
- --------------------------------------------------------------------------------------------------------------------------
                                                                                                

        Patina Ratio of Consolidated Funded Debt to               Adjusted Base Rate                 Eurodollar
               Adjusted Consolidated EBITDA                            Tranches                       Tranches
- --------------------------------------------------------------------------------------------------------------------------
Less than or equal to 1.5 to 1                                             0                         .75%
- --------------------------------------------------------------------------------------------------------------------------
Greater than 1.5 to 1 Less than or equal to 2.5 to 1                       0                         .875%
- --------------------------------------------------------------------------------------------------------------------------
Greater than 2.5 to 1 Less than or equal to 3.0 to 1                       0                        1.000%
- --------------------------------------------------------------------------------------------------------------------------
Greater than  3.0 to 1                                                    .25%                       1.250%
==========================================================================================================================



                                        3


     "Approved Petroleum Engineer" means any one or more of Netherland, Sewell &
Associates,  Inc., Ryder Scott Company, Williamson Petroleum Consultants,  Inc.,
Barnes and Click, Inc., or such other reputable firm(s) of independent petroleum
engineers  as  shall  be  approved  by  Required  Banks  and,  as to oil and gas
properties  aggregating not more than twenty percent (20%) of the total value of
a Borrower's and its Restricted  Subsidiaries'  oil and gas properties (based on
the  Recognized  Value),  Patina's  in-house  staff  shall be deemed an Approved
Petroleum Engineer.

         "Assignee" has the meaning given such term in Section 14.10(c).

     "Assignment  and Amendment to  Mortgages"  means an Assignment of Notes and
Liens and Amendment to Mortgage to be entered into among Gerrity, Administrative
Agent  and Bank of  Montreal  as agent  for the banks  parties  to the  Existing
Gerrity  Credit  Agreement,  substantially  in the  form of  Exhibit  A  hereto,
pursuant  to  which  the  Existing  Gerrity   Mortgages  shall  be  assigned  to
Administrative  Agent for the ratable benefit of each Bank to secure the Gerrity
Obligations.

     "Assignment  and  Assumption  Agreement" has the meaning given such term in
Section 14.10(c).

     "Authorized Officer" means, as to any Person, its Chairman,  Vice-Chairman,
President,  Executive  Vice  President(s),  Senior  Vice  President(s)  or  Vice
President duly authorized to act on behalf of such Person.

     "Bank"  means any  financial  institution  listed on  Schedule  1 hereto as
having a Commitment,  and its successors and assigns, and "Banks" shall mean all
Banks.

     "Base Rate" means the floating  rate of interest  established  from time to
time by Administrative Agent as its "prime rate" of interest,  which rate is not
the lowest rate of interest which Administrative  Agent charges,  each change in
the  Base  Rate to  become  effective  without  notice  to any  Borrower  on the
effective date of each such change.

     "Borrower"  means any of Patina,  SWAT or Gerrity,  and  "Borrowers"  means
Patina, SWAT and Gerrity collectively.

     "Borrowing" means any disbursement to any Borrower under, or to satisfy the
obligations of any Company under,  any of the Loan Papers.  Any Borrowing  which
will  constitute  an Adjusted Base Rate Tranche is referred to herein as a "Base
Rate Borrowing," and any Borrowing which will constitute a Eurodollar Tranche is
referred to herein as a "Eurodollar Borrowing."

     "Borrowing Base  Deficiency"  means any Patina Borrowing Base Deficiency or
Gerrity Borrowing Base Deficiency.

     "Borrowing Date" means the Eurodollar Business Day or the Domestic Business
Day,  as the case may be,  upon which the  proceeds  of any  Borrowing  are made
available to any Borrower or to satisfy the obligation of any Company.

     "Capital  Lease"  means,  for any  Person  as of any  date,  any  lease  of
property, real or personal, which would be capitalized on a balance sheet of the
lessee prepared as of such date in accordance with generally accepted accounting
principles.

     "Closing  Date"  means  the  date  of  the  initial  Borrowing  under  this
Agreement. The Closing Date shall in no event be later than May 31, 1996.

                                        4



     "Closing  Documents" means the Merger Agreement,  the Business  Opportunity
Agreement,   the  Corporate  Services   Agreement,   the   Cross-Indemnification
Agreement,  the Preferred Stock  Designation,  the Registration  Statement,  the
Exchange  Agent  Agreement,  the  Transfer  Documents  and  all  other  material
documents,  instruments  and  agreements  executed or  delivered  by any Company
pursuant to the Merger Agreement or the Closing Transactions.

     "Closing  Transactions" means the transactions to occur on the Closing Date
pursuant  to the  Closing  Documents  and  this  Agreement,  including,  without
limitation,  (a) the  Merger,  (b) the  exchange  of the issued and  outstanding
capital  stock of Gerrity  for the  Exchange  Securities  (other  than shares of
Gerrity  Preferred  Stock which is not exchanged  pursuant to the Exchange Offer
contemplated by Section 7.26 of the Merger  Agreement),  (c) the contribution of
SOCO  Wattenberg  to  Patina,  (d) the  assumption  and  repayment  by Patina of
$75,000,000 of Debt of SOCO assumed by Patina pursuant to the Merger  Agreement,
and (e) the  termination of the Existing  Gerrity Credit  Agreement,  including,
without limitation, (i) the refinancing of all Debt of Gerrity outstanding under
such Existing  Gerrity Credit  Agreement with proceeds of the Gerrity Loan, (ii)
the cancellation of all letters of credit outstanding thereunder,  and (iii) the
assignment of all Liens  securing the  obligations of Gerrity under the Existing
Gerrity  Credit  Agreement  to  Administrative   Agent  to  secure  the  Gerrity
Obligations.

     "Co-Agents"  means Wells Fargo Bank,  N.A.,  CIBC, Inc. and Credit Lyonnais
New York Branch in their  capacities  as Co-Agents  hereunder  or any  successor
thereto, and "Co-Agent" means any one of the foregoing.

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

     "Collateral  Assignment of Intercompany Loan" means a Collateral Assignment
of Intercompany Loan of even date herewith  substantially in the form of Exhibit
B attached hereto,  to be executed by Patina and SWAT in favor of Administrative
Agent pursuant to which Patina and SWAT shall assign to Administrative Agent and
grant to Administrative Agent a first and prior Lien in and to all rights, title
and interest in and to the Intercompany Loan and the Intercompany Loan Documents
to secure the Obligations.

     "Commitment" means, with respect to any Bank, the sum of such Bank's Patina
Term Commitment, Patina Revolving Commitment and Gerrity Commitment.

     "Commitment  Fee  Percentage"  means for any Fiscal Quarter of any Borrower
(the "Subject  Quarter")  (a) through and including the Fiscal  Quarter in which
the Total Patina Term  Commitment  is cancelled and the Patina Term Loan is paid
in full,  the amount set forth in Table A below based on the type of Commitment,
and (b)  commencing  with the first Fiscal  Quarter after the Fiscal  Quarter in
which the Total Patina Term  Commitment is cancelled and the Patina Term Loan is
paid in full, for each type of Commitment, the amount set forth in Table B below
opposite  the  applicable   Ratio  of  Consolidated   Funded  Debt  to  Adjusted
Consolidated  Cash Flow. The  Commitment  Fee  Percentage in effect  pursuant to
Table B below during a Subject  Quarter shall be calculated at the  commencement
of such  Subject  Quarter  based on the  Ratio of  Consolidated  Funded  Debt to
Adjusted  Consolidated EBITDA as of the last day of the Fiscal Quarter then most
recently ended for which Patina and Gerrity have provided to Banks the financial
statements  required by Sections 8.1(b),  (d) and (f) hereof (in the case of the
first three (3) Fiscal  Quarters of each Fiscal Year) or Sections 8.1(a) (c) and
(e) hereof  (in the case of the fourth  Fiscal  Quarter  of each  Fiscal  Year).
Notwithstanding the foregoing,  if the Total Patina Term Commitment is cancelled
and the  Patina  Term Loan is paid in full  prior to  September  30,  1996,  the
Commitment Fee Percentage  during the Fiscal Quarters  commencing with the first
Fiscal  Quarter  after  the  Fiscal  Quarter  in which  the  Total  Patina  Term
Commitment is cancelled and the Patina Term Loan is paid in full through

                                        5


and including the Fiscal Quarter ending December 31, 1996 shall be three eighths
of one percent (.375%).



================================================================================
                                     TABLE A
- --------------------------------------------------------------------------------
   Commitment                                       Commitment Fee Percentage
                                                                          
- --------------------------------------------------------------------------------
Gerrity Commitment                                             .375%
- --------------------------------------------------------------------------------
Patina Revolving Commitment                                    .375%
- --------------------------------------------------------------------------------
Patina Term Commitment                                          .50%
================================================================================





=======================================================================================
                                                     TABLE B
- ---------------------------------------------------------------------------------------
           Patina's Ratio of Consolidated Funded Debt to                 Commitment Fee
                   Adjusted Consolidated EBITDA                            Percentage
                                                                                 

- ---------------------------------------------------------------------------------------
Less than or equal to 1.5 to 1                                               .25%
- ---------------------------------------------------------------------------------------
Greater than 1.5 to 1 Less than or equal to 2.5 to 1                         .25%
- ---------------------------------------------------------------------------------------
Greater than 2.5 to 1 Less than or equal to 3.0 to 1                         .30%
- ---------------------------------------------------------------------------------------
Greater than 3 to 1                                                          .375%
=======================================================================================


     "Commitment  Percentage"  means,  with respect to any Bank at any time, the
Commitment Percentage for such Bank set forth on Schedule 1 hereto.

     "Common Stock" means Patina's Common Stock, par value $.01 per share.

     "Companies" means each Borrower and all direct and indirect Subsidiaries of
each  Borrower  whether  existing  on the date hereof or  hereafter  acquired or
created, and "Company" means any one of the foregoing.

     "Consolidated Current Assets" means, for any Person at any time, the sum of
(a) consolidated current assets of such Person and its Consolidated Subsidiaries
including  accounts or notes receivable (if properly reserved in accordance with
generally accepted accounting  principles),  but excluding (i) prepaid expenses,
and (ii) assets held for resale,  plus (b) in the case of (i) Patina, the Patina
Revolving Availability, and (ii) Gerrity, the Gerrity Availability.

     "Consolidated  Current  Liabilities" means, for any Person at any time, the
current  liabilities of such Person and its  Consolidated  Subsidiaries  at such
time, but excluding,  in the case of (i) Patina and SWAT, the current portion of
the principal  outstanding  under the Patina Term Loan and the Patina  Revolving
Loan, and (ii) Gerrity,  the current portion of the principal  outstanding under
the Gerrity Loan.

     "Consolidated   EBITDA"  means,   for  any  Person  for  any  period,   the
Consolidated  Net  Income  of such  Person  for such  period,  plus  each of the
following  determined  for such Person and its  Consolidated  Subsidiaries  on a
consolidated  basis for such period:  (a) any provision for (or less any benefit
from) income or franchise Taxes included in determining Consolidated Net Income;
(b) Consolidated  Net Interest Expense deducted in determining  Consolidated Net
Income;  (c)  depreciation,  depletion  and  amortization  expense  deducted  in
determining Consolidated Net Income; and (d) other noncash charges deducted in

                                        6


determining  Consolidated Net Income and not already deducted in accordance with
clauses (b) and (c) of this definition.

     "Consolidated Funded Debt" means, for any Borrower at any time, all Debt of
such Borrower and its Consolidated Subsidiaries at such time.

     "Consolidated  Net Income" means, for any person as of any period,  the net
income  (or loss) of such  Person  and its  Consolidated  Subsidiaries  for such
period determined in accordance with generally accepted  accounting  principles,
but excluding:  (a) the income of any other Person (other than its  Consolidated
Subsidiaries)  in which such Person or any of its  Subsidiaries has an ownership
interest,  unless received by such Person or its Consolidated  Subsidiaries in a
cash distribution;  (b) any after-tax gains attributable to asset  dispositions;
(c) to the extent not included in clauses (a) and (b) above,  any  after-tax (i)
extraordinary  gains, (ii) non-cash gains or (iii)  nonrecurring  gains; and (d)
non-cash  or  nonrecurring  charges  due to  changes  in  accounting  principles
required by generally accepted accounting principles.

     "Consolidated  Net Interest  Expense" means, for any Person for any period,
the remainder of the following for such Person and its Consolidated Subsidiaries
for such period: (a) interest expense, minus (b) interest income.

     "Consolidated  Subsidiary" or  "Consolidated  Subsidiaries"  means, for any
Person,  at any time, any Subsidiary or other entity the accounts of which would
be  consolidated  with  those  of  such  Person  in its  consolidated  financial
statements as of such time.

     "Consolidated  Total Capital" means, for any Person as of any date, the sum
of (a)  the  Consolidated  Funded  Debt  of such  Person  and  its  Consolidated
Subsidiaries  as of such date,  and (b) the  shareholders  equity of such Person
which would be reflected on a consolidated  balance sheet of such Person and its
Consolidated  Subsidiaries prepared as of such date in accordance with generally
accepted accounting principles.

     "Conversion Date" has the meaning set forth in Section 2.7(c).

     "Corporate Opportunity Agreement" means the Corporate Opportunity Agreement
to be entered into between SOCO and Patina pursuant to the Merger Agreement.

     "Corporate Services Agreement" means the Corporate Services Agreement dated
January 16, 1996 between SOCO and Patina.

     "Credit  Period" means the period  commencing on the date hereof and ending
on the Termination Date.

     "Cross Indemnification Agreement" means the Cross-Indemnification Agreement
to be entered into between SOCO and Patina pursuant to the Merger Agreement.

     "Current  Gerrity Reserve  Report" means that certain  Estimate of Reserves
and Future  Revenue  dated  January 19, 1996,  prepared as of January 1, 1996 by
Netherland,  Sewell  &  Associates,  Inc.  setting  forth  Netherland,  Sewell &
Associates,  Inc.'s analysis of certain oil and gas properties  owned by Gerrity
and its Restricted Subsidiaries as of December 31, 1995.

     "Current Patina Reserve Report" means that certain Estimate of Reserves and
Future Revenue

                                        7


     dated  March 11,  1996,  prepared as of  December  31, 1995 by  Netherland,
Sewell & Associates, Inc. setting forth Netherland,  Sewell & Associates, Inc.'s
analysis of certain oil and gas properties owned by SWAT (after giving effect to
the Closing Transactions) as of December 31, 1995.

     "Current Reserve Reports" means,  collectively,  the Current Patina Reserve
Report and the Current Gerrity Reserve Report.

     "Debt" of any Person means,  without  duplication,  (a) all  obligations of
such Person for borrowed money,  (b) all obligations of such Person evidenced by
bonds,   debentures,   notes  or  other  similar  instruments,   (c)  all  other
indebtedness  (including  obligations  under Capital Leases,  other than Capital
Leases which are usual and customary oil and gas leases) of such Person on which
interest  charges are  customarily  paid or accrued,  (d) all Guarantees by such
Person, (e) the unfunded or unreimbursed portion of all letters of credit issued
for the  account  of such  Person,  and (f) all  liability  of such  Person as a
general  partner of a partnership  for  obligations  of such  partnership of the
nature described in (a) through (e) preceding.

     "Default"  means  any  condition  or event  which  constitutes  an Event of
Default  or which  with the  giving of  notice  or lapse of time or both  would,
unless cured or waived, become an Event of Default.

     "Determination" means any Periodic Determination or Special Determination.

     "Determination  Date"  means  (a) each May 1 and  November  1, and (b) with
respect to any Special Determination,  the first day of the first month which is
not less than twenty (20) Domestic Business Days following the date of a request
for  a  Special  Determination.   The  Closing  Date  shall  also  constitute  a
Determination Date for purposes of this Agreement.

     "Distribution" by any Person, means (a) with respect to any stock issued by
such  Person  or any  partnership  interest  of  such  Person,  the  retirement,
redemption,  purchase,  or other  acquisition  for  value  of any such  stock or
partnership  interest,  (b) the  declaration or payment of any dividend or other
distribution on or with respect to any stock or any partnership  interest of any
Person,  and (c) any other  payment by such Person with respect to such stock or
partnership interest.

     "Documentary  Agent" means  NationsBank  of Texas,  N.A. in its capacity as
Documentary Agent for Banks hereunder or any successor thereto.

     "Domestic  Business  Day" means any day except a Saturday,  Sunday or other
day on which national banks in Houston, Texas, are authorized by law to close.

     "Domestic  Lending Office" means, as to each Bank, its office identified on
Schedule 1 hereto as its  Domestic  Lending  Office or such other office as such
Bank may  hereafter  designate  as its  Domestic  Lending  Office  by  notice to
Borrowers and Administrative Agent.

     "Environmental Liability" means any liability, loss, fine, penalty, charge,
lien, damage,  cost, or expense of any kind that results directly or indirectly,
in whole or in part (a) from the violation of any Applicable  Environmental Law,
(b) from the release or threatened release of any hazardous substance,  (c) from
removal,  remediation, or other actions in response to the release or threatened
release of any hazardous  substance,  (d) from actual or  threatened  damages to
natural resources, (e) from the imposition of injunctive relief or other orders,
(f) from personal injury,  death, or property damage which occurs as a result of
any Company's use, storage,  handling, or the release or threatened release of a
hazardous substance,  or (g) from any environmental  investigation performed at,
on, or for any real property owned

                                        8


by any Company.

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

     "Eurodollar  Business  Day"  means  any  Domestic  Business  Day  on  which
commercial  banks are open for  international  business  (including  dealings in
dollar deposits) in the applicable Eurodollar interbank market.

     "Eurodollar  Lending Office" means, as to each Bank, its office,  branch or
affiliate  located  at its  address  identified  on  Schedule  1  hereto  as its
Eurodollar Lending Office or such other office, branch or affiliate of such Bank
as it may  hereafter  designate as its  Eurodollar  Lending  Office by notice to
Borrowers and Administrative Agent.

     "Eurodollar  Rate"  applicable  to any  Interest  Period means the rate per
annum determined by Administrative  Agent (rounded upward, if necessary,  to the
next  higher  1/16  of  1%)  at  which   deposits  in  dollars  are  offered  to
Administrative  Agent by first class banks in the  eurodollar  interbank  market
which has been  selected by  Administrative  Agent at  approximately  10:00 a.m.
(Houston,  Texas time) two (2) Eurodollar  Business Days before the first day of
such Interest Period in an amount approximately equal to the principal amount of
the  Eurodollar  Tranche  to which  such  Interest  Period is to apply and for a
period of time comparable to such Interest  Period.  Administrative  Agent shall
determine the  Eurodollar  Rate and shall notify  Borrowers and Banks as soon as
practicable.

     "Eurodollar   Reserve   Percentage"  means  for  any  day  that  percentage
(expressed  as a decimal)  which is in effect on such day, as  prescribed by the
Board  of  Governors  of the  Federal  Reserve  System  (or any  successor)  for
determining  the maximum  reserve  requirement  for a member bank of the Federal
Reserve System in Houston, Texas in respect of "Eurocurrency liabilities" (or in
respect  of any  other  category  of  liabilities  which  includes  deposits  by
reference to which the interest rate on Eurodollar Tranches is determined or any
category of  extensions  of credit or other  assets  which  includes  loans by a
non-United States office of any Bank to United States  residents).  The Adjusted
Eurodollar Rate shall be adjusted  automatically on and as of the effective date
of any change in the Eurodollar Reserve Percentage.

     "Eurodollar  Tranche"  means,  with  respect to any  Interest  Period,  any
portion of the principal amount outstanding under a Loan which bears interest at
a rate computed by reference to the Adjusted  Eurodollar  Rate for such Interest
Period.

     "Event of Default" has the meaning set forth in Section 11.1 hereof.

     "Exchange  Agent  Agreement"  means that certain  Exchange Agent  Agreement
dated April 29, 1996, by and between Society National Bank and Patina.

     "Exchange  Securities"  means (a) (i) 6,000,000 shares of Common Stock, and
(ii)  3,000,000  warrants to  purchase  Common  Stock,  which  Common  Stock and
warrants are to be issued  pursuant to the Merger  Agreement in exchange for all
of the issued  and  outstanding  common  stock,  par value  $.01 per  share,  of
Gerrity; and (b) up to 1,600,000 shares of Preferred Stock to be issued pursuant
to the Merger  Agreement  in  exchange  for the issued and  outstanding  Gerrity
Preferred Stock.

     "Exempt  Transfer"  means any transfer of oil and gas properties or Related
Assets (a) by Patina to any of its Restricted Subsidiaries, or (b) by any of the
Restricted  Subsidiaries  of a  Borrower  to  such  Borrower  or  to  any  other
Restricted Subsidiary of such Borrower.


                                        9


     "Exhibit"  refers to an exhibit attached to this Agreement and incorporated
herein by reference, unless specifically provided otherwise.

     "Existing Gerrity Credit Agreement" means that certain Amended and Restated
Credit  Agreement  dated  December  21,  1994,  by and  among  Gerrity,  Bank of
Montreal,  Den Norske Bank, Societe Generale,  Credit Lyonnais,  Christiana Bank
and Banque Paribas.

     "Existing Gerrity Mortgages" means the mortgages,  deeds of trust, security
agreements, assignments, pledges and other documents, instruments and agreements
described on Schedule 3 hereto which  establish  Liens on oil and gas properties
owned by Gerrity and its Restricted  Subsidiaries  and on Gerrity Related Assets
to secure Gerrity's obligations under the Existing Gerrity Credit Agreement.

     "Fairness  Opinion"  means a written  opinion  of a  nationally  recognized
investment  banking  firm  stating  that  the  transaction  contemplated  by the
Intercompany Loan Documents is fair to Gerrity from a financial point of view.

     "Federal  Funds  Rate"  means,  for any day,  the rate per  annum  (rounded
upwards, if necessary,  to the nearest 1/16 of 1%) equal to the weighted average
of the rates on overnight federal funds transactions with members of the Federal
Reserve  System  arranged by federal  funds brokers on such day, as published by
the  Federal  Reserve  Bank  of New  York  on the  Domestic  Business  Day  next
succeeding  such day,  provided that (a) if the day for which such rate is to be
determined  is not a Domestic  Business Day, the Federal Funds Rate for such day
shall be such rate on such transactions on the next preceding  Domestic Business
Day as so published on the next  succeeding  Domestic  Business  Day, and (b) if
such rate is not so published on such next succeeding Domestic Business Day, the
Federal   Funds  Rate  for  any  day  shall  be  the  average  rate  charged  to
Administrative  Agent  on  such  day  on  such  transactions  as  determined  by
Administrative Agent.

     "Financial  Statements"  means,  collectively,   the  Pro  Forma  Financial
Statements, the Pro Forma Segregated Financial Statements, the Patina Historical
Financial Statements and the Gerrity Historical Financial Statements.

     "Fiscal  Quarter"  means the three (3) month periods  ending March 31, June
30, September 30 or December 31 of each Fiscal Year.

     "Fiscal Year" means a twelve (12) month period ending December 31.

     "Gerrity"  means  Gerrity Oil & Gas  Corporation,  a Delaware  corporation,
which, after the Merger, will be a wholly owned Subsidiary of Patina.

     "Gerrity  Availability"  means, at any time, (a) the Gerrity Borrowing Base
in effect at such time, minus (b) the Gerrity Outstanding Credit at such time.

     "Gerrity Borrowing Base" has the meaning set forth in Section 4.6 hereof.

     "Gerrity  Borrowing Base Ceiling" means (a) during the period commencing on
the  Closing  Date and  continuing  until the  earlier of the first (i)  Gerrity
Periodic Determination,  or (ii) Gerrity Special Determination after the Closing
Date,   $138,000,000,   and  (b)  during  each  period  between  Determinations,
commencing  with the first Gerrity  Periodic  Determination  or Gerrity  Special
Determination  after  the  Closing  Date,  whichever  first  occurs,  an  amount
determined by Administrative  Agent and approved by Required Banks in connection
with such Gerrity Periodic Determination or Gerrity Special Determination;

                                       10


provided,  however,  if a Gerrity  Periodic  Determination  or a Gerrity Special
Determination  following  the  Closing  Date has not  previously  occurred,  the
Gerrity  Borrowing Base Ceiling shall  automatically  adjust on the  Subordinate
Note Redemption Date and on any date thereafter on which  Subordinate  Notes are
redeemed or repurchased  by Gerrity,  to an amount equal to the remainder of (y)
$138,000,000,  minus (z) a percentage  of the principal  balance of  Subordinate
Notes   outstanding  after  giving  effect  to  such  redemption  or  repurchase
determined by reference to the following table:



========================================================================================================================
                                                                            
Principal Balance of Remaining                                                  Applicable Percentage of Principal
   Subordinate Notes                                                            Balance of Outstanding Subordinate Notes
- ------------------------------------------------------------------------------------------------------------------------
Less than $40,000,000                                                                     40%
- ------------------------------------------------------------------------------------------------------------------------
Greater than or equal to $40,000,000 Less than or equal to  $60,000,000                   45%
- ------------------------------------------------------------------------------------------------------------------------
Greater than $60,000,000                                                                  50%
========================================================================================================================



     "Gerrity  Borrowing Base Deficiency"  means, as of any date, the amount, if
any, by which (a) the Gerrity  Outstanding  Credit on such date, exceeds (b) the
Gerrity Borrowing Base in effect on such date;  provided,  that, for purposes of
computing  the existence and amount of any Gerrity  Borrowing  Base  Deficiency,
Gerrity Letter of Credit Exposure will not constitute Gerrity Outstanding Credit
to the extent funds have been deposited with Administrative Agent to secure such
Gerrity Letter of Credit Exposure pursuant to Section 2.3(b).

     "Gerrity  Commitment"  means,  with respect to any Bank,  the commitment of
such Bank to lend its Commitment Percentage of the Total Gerrity Commitment. The
amount of each Bank's  Gerrity  Commitment is the amount of such  commitment set
forth  opposite  such Bank's  name on  Schedule 1 hereto,  as such amount may be
terminated  or  reduced  from  time to time in  accordance  with the  provisions
hereof.

     "Gerrity Debt Restriction Certificate" means a certificate of an Authorized
Officer of Gerrity,  delivered simultaneously with the delivery of the financial
statements  required to be  delivered  pursuant to Sections  8.1(c) and (d) (and
more frequently if Gerrity shall so elect,  but in no event more frequently than
once per calendar month),  setting forth a calculation in detail satisfactory to
Administrative  Agent,  certified by Gerrity's auditors, of the aggregate amount
Gerrity may borrow at that time under the Total Gerrity Commitment in accordance
with the first paragraph of Section 4.03(a) of the Indenture;  provided however,
that such certificate is not required to be certified by Gerrity's  auditors for
the financial statements required to be delivered pursuant to Section 8.1(c) and
(d) to the  extent  such  certificate  would not  result in an  increase  of the
Gerrity Borrowing Base pursuant to Section 4.8.

     "Gerrity Historical  Financial  Statements" means the consolidated  balance
sheet  of  Gerrity  as of  December  31,  1995,  and  the  related  consolidated
statements of operations and cash flow for the Fiscal Year then ended,  reported
on by Arthur  Andersen LLP, all as set forth in Gerrity's  annual report on Form
10-K for the Fiscal Year ended December 31, 1995.

     "Gerrity Letter of Credit Exposure" of any Bank means such Bank's aggregate
participation in the unfunded  portion of Gerrity Letters of Credit  outstanding
at any time.

     "Gerrity  Letter of Credit  Issuer"  has the  meaning  set forth in Section
2.3(b).

     "Gerrity  Letters of Credit" means letters of credit issued for the account
of Gerrity pursuant to

                                       11


Section 2.3(b).

     "Gerrity  Loan"  means  a  revolving  loan  in an  aggregate  amount  up to
$138,000,000  to be made to  Gerrity  pursuant  to the  Gerrity  Commitments  in
accordance with Section 2.3 hereof.

     "Gerrity Note" means a promissory note of Gerrity payable to the order of a
Bank,  in  substantially  the form of Exhibit C-1 hereto,  in the amount of such
Bank's Gerrity Commitment, evidencing the obligation of Gerrity to repay to such
Bank  its  Commitment   Percentage  of  the  Gerrity  Loan,  together  with  all
modifications,  extensions,  renewals and rearrangements  thereof,  and "Gerrity
Notes" means all of such Gerrity Notes collectively.

     "Gerrity   Obligations"  means,   collectively,   all  present  and  future
indebtedness,  obligations  and  liabilities  and all  renewals  and  extensions
thereof,  or any part thereof, of Gerrity or any of its Subsidiaries to any Bank
or to any Affiliate of any Bank (a) arising pursuant to the Loan Papers, and all
interest accrued thereon and costs, expenses and attorneys' fees incurred in the
enforcement or collection  thereof,  (b) arising under or in connection with any
Oil and  Gas  Hedge  Transaction  entered  into  between  Gerrity  or any of its
Subsidiaries  and any Bank or any Affiliate of any Bank, (c) arising under or in
connection  with any interest rate swap,  cap,  collar,  hedge or other interest
rate protection  device entered into between Gerrity or any of its  Subsidiaries
and  any  Bank  or any  Affiliate  of any  Bank,  and (d)  arising  under  or in
connection with any other financial "derivative" product provided by any Bank or
any Affiliate of any Bank, to Gerrity or any of its Subsidiaries,  regardless of
whether such  indebtedness,  obligations and  liabilities are direct,  indirect,
fixed,  contingent,  liquidated,  unliquidated,  joint,  several  or  joint  and
several; provided,  however, it is the intention of Borrowers,  Agents and Banks
that  Gerrity  will not be liable  for,  and the  Gerrity  Obligations  will not
include any of the obligations of Patina and its Restricted  Subsidiaries  under
any of the Loan  Papers  other  than  those  obligations  for which  Gerrity  is
otherwise  the  primary  obligor  under  the Loan  Papers  and  which  have been
guaranteed by Patina or any of its Restricted  Subsidiaries pursuant to the Loan
Papers.

     "Gerrity  Outstanding  Credit"  means,  at any  time,  the  sum of (i)  the
aggregate  Gerrity  Letter  of  Credit  Exposure  at such  time,  plus  (ii) the
outstanding principal balance of the Gerrity Loan at such time.

     "Gerrity  Periodic  Determination"  means a  determination  of the  Gerrity
Borrowing Base pursuant to Section 4.6.

     "Gerrity Pledge  Agreement" means a Pledge Agreement in the form of Exhibit
D-1 attached hereto to be executed by Gerrity  pursuant to which Gerrity pledges
the  issued and  outstanding  capital  stock of each  Restricted  Subsidiary  of
Gerrity to Administrative Agent to secure the Gerrity Obligations.

     "Gerrity  Preferred  Stock" means Gerrity's  $12.00  Convertible  Preferred
Stock, par value $.01 per share.

     "Gerrity  Readjustment  Date"  means the  effective  date of any  automatic
readjustment of the Gerrity Borrowing Base pursuant to the delivery of a Gerrity
Debt Restriction Certificate in accordance with Section 4.8 hereof.

     "Gerrity  Refinancing  Reserve" means a reserve established with respect to
the Gerrity  Borrowing Base and the Total Gerrity  Commitment  (and ratably from
the Gerrity  Commitments of each Bank) on the Closing Date and maintained  until
the Patina Term  Commitment  is  terminated  and the Patina Term Loan is paid in
full. The Gerrity Refinancing Reserve shall be in the amount of (a) $14,000,000,
plus (b) the amount of any increase in the Gerrity  Borrowing  Base  pursuant to
Section 4.8. Borrowings may

                                       12


be obtained by Gerrity in respect of the Gerrity  Refinancing Reserve solely (a)
to repurchase  Subordinate  Notes  tendered to Gerrity on the  Subordinate  Note
Redemption  Date as a result  of the  Merger  pursuant  to  Section  4.08 of the
Indenture,  (b) to repurchase  Subordinate  Notes  subsequent to the Subordinate
Note  Redemption  Date,  and  (c)  to  make  payments  and  prepayments  of  the
Intercompany Loan.

     "Gerrity  Related  Assets"  means all  pipelines,  gathering  systems,  gas
processing  plants  and  similar  assets  owned by  Gerrity  and its  Restricted
Subsidiaries,  including,  related personal  property and other fixed assets and
all easements,  servitudes and similar real property  interests owned by Gerrity
and its Restricted Subsidiaries on which such systems are located.

     "Gerrity  Related Assets  Reports" means reports to be delivered by Gerrity
to Banks  simultaneously  with each  delivery  by Gerrity  of a Gerrity  Reserve
Report pursuant to Sections 4.1 and 4.7 which shall (a) be in form and substance
acceptable to Required Banks, (b) be prepared by the Approved Petroleum Engineer
(with the exception of the Gerrity Related Asset Report required to be delivered
on or  before  September  15 of each year or  pursuant  to any  Gerrity  Special
Determination  which may be prepared by Patina's  in-house  staff) in accordance
with customary and prudent practices of the petroleum engineering industry,  and
(c) which shall set forth the  discounted  present value of the Gerrity  Related
Assets  (which  valuation  shall  be  determined  as of  the  same  date  as the
discounted  present value of the oil and gas properties which are the subject of
the  Gerrity  Reserve  Report  delivered  simultaneously  therewith  pursuant to
Sections 4.1 and 4.7 as  applicable)  as  determined  by the Approved  Petroleum
Engineer or Patina's in-house staff (as applicable).  Each Gerrity Related Asset
Report shall also designate the owner (either Gerrity,  or one of its Restricted
Subsidiaries) of each Gerrity Related Asset which is the subject of such report.

     "Gerrity  Reserve Report" means an engineering  analysis of the oil and gas
properties  owned  by  Gerrity  and its  Restricted  Subsidiaries  in  form  and
substance  acceptable  to  Required  Banks  prepared by the  Approved  Petroleum
Engineer or reviewed and approved by the Approved  Petroleum  Engineer (with the
exception of the Gerrity Reserve  Reports  required to be delivered on or before
September  15 of each year  pursuant  to Section  4.1 or pursuant to any Gerrity
Special Determination  pursuant to Section 4.7 which may be prepared by Patina's
in-house  staff) in  accordance  with  customary  and prudent  practices  in the
petroleum   engineering   industry  and  Financial  Accounting  Standards  Board
Statement  69.  Until  superseded  by delivery of a subsequent  Gerrity  Reserve
Report pursuant to Section 4.1 or Section 4.7, each reference to Gerrity Reserve
Report shall constitute a reference to the Current Gerrity Reserve Report.

     "Gerrity  Restricted  Payment  Limit"  means (a) as of any date  during the
period  from the  Closing  Date  through  the date of  delivery  to the Banks of
Gerrity's  consolidated  financial statements required by Section 8.1(f) for the
Fiscal  Quarter  ending June 30, 1997,  an amount  equal to Gerrity's  Allocated
Share of the  Initial  Restricted  Payment  Limit,  and (b) as of any date  (the
"measurement  date") on and after the date of delivery to the Banks of Gerrity's
consolidated  financial  statements  required  by Section  8.1(f) for the Fiscal
Quarter  ending June 30, 1997, the sum of (i) Gerrity's  Allocated  Share of the
Initial Restricted Payment Limit, plus (ii) an amount equal to five percent (5%)
of  Gerrity's  Consolidated  EBITDA for the period  commencing  July 1, 1996 and
ending  on the last day of the  Fiscal  Quarter  most  recently  ended as of the
measurement date for which Gerrity's  consolidated financial statements required
by Section  8.1(f) (in the case of the first three quarters of each Fiscal Year,
and Section 8.1(e) in the case of the fourth Fiscal Quarter of each Fiscal Year)
have been delivered to the Banks.

     "Gerrity  Special  Determination"  means any  determination  of the Gerrity
Borrowing Base pursuant to Section 4.7.


                                       13


     "Guarantee" by any Person means any obligation, contingent or otherwise, of
such Person directly or indirectly  guaranteeing any Debt or other obligation of
any other Person and,  without  limiting the  generality of the  foregoing,  any
obligation,  direct or indirect,  contingent or otherwise, of such Person (a) to
purchase or pay (or advance or supply funds for the purchase or payment of) such
Debt or other obligation (whether arising by virtue of partnership arrangements,
by agreement to keep-well, to purchase assets, goods, securities or services, to
take-or-pay,  or to maintain financial statement conditions, by "comfort letter"
or other  similar  undertaking  of support or otherwise) or (b) entered into for
the purpose of  assuring  in any other  manner the obligee of such Debt or other
obligation  of the payment  thereof or to protect such  obligee  against loss in
respect  thereof (in whole or in part),  provided that the term Guarantee  shall
not include  endorsements  for  collection or deposit in the ordinary  course of
business.

     "Indenture"  means that certain Indenture dated as of June 30, 1994, by and
between Gerrity and Chemical Bank as Trustee, which Indenture sets forth certain
terms applicable to the Subordinate Notes.

     "Initial  Gerrity  Borrowing  Base" means a Gerrity  Borrowing  Base in the
amount of $51,000,000,  which shall be in effect during the period commencing on
the  Closing  Date and  continuing  until the  earlier of (a) the first  Gerrity
Readjustment  Date  after  the  Closing  Date or (b) the first  Gerrity  Special
Determination or Gerrity Periodic Determination after the Closing Date.

     "Initial Patina Borrowing Base" means a Patina Borrowing Base in the amount
of  $102,000,000,  which shall be in effect during the period  commencing on the
Closing Date and  continuing  until the first Patina  Special  Determination  or
Patina Periodic Determination after the Closing Date.

     "Initial  Restricted Payment Limit" means  $12,000,000;  provided that such
amount shall be allocated by Borrowers  between  Patina and Gerrity on or before
August 15, 1996, and Borrowers  shall notify Banks in writing of such allocation
together  with the  delivery to the Banks of the  financial  statements  for the
Fiscal  Quarter  ended June 30, 1996 required by Sections  8.1(b),  (d) and (e);
provided,  further,  that not more than  $6,000,000  of the  Initial  Restricted
Payment  Limit  shall be  allocated  to  Patina.  "Allocated  Share  of  Initial
Restricted Payment Limit" means, with respect to Patina or Gerrity, that portion
of the  Initial  Restricted  Payment  Limit  allocated  to Patina or Gerrity (as
applicable) pursuant to this definition.

     "Intercompany  Loan" means a subordinate  term loan made by Patina and SWAT
to Gerrity in an amount up to  $87,000,000,  pursuant to the  Intercompany  Loan
Agreement.

     "Intercompany  Loan Agreement"  means a Subordinate  Loan Agreement of even
date  herewith  to be entered  into by and among  Patina and SWAT as Lenders and
Gerrity as Borrower substantially in the form of Exhibit E hereto, setting forth
certain terms and conditions applicable to the Intercompany Loan.

     "Intercompany  Loan Documents" means the Intercompany  Loan Agreement,  the
promissory  note  evidencing  the  Intercompany  Loan and all  other  documents,
instruments and agreements  which evidence,  secure or otherwise  pertain to the
Intercompany Loan.

     "Intercompany  Loan  Effectiveness  Certificate"  means the  "Effectiveness
Certificate" as defined in the Intercompany Loan Agreement.

     "Interest Option" has the meaning given such term in Section 2.7(c).

     "Interest  Period"  means,  with respect to each  Eurodollar  Tranche,  the
period commencing on the Borrowing or Conversion Date applicable to such Tranche
and ending one (1), two (2), three (3) or six

                                       14


(6) months  thereafter,  as any Borrower may elect in the applicable Request for
Borrowing; provided that: (a) any Interest Period which would otherwise end on a
day  which  is not a  Eurodollar  Business  Day  shall be  extended  to the next
succeeding  Eurodollar Business Day unless such Eurodollar Business Day falls in
another calendar month, in which case such Interest Period shall end on the next
preceding  Eurodollar  Business Day; (b) any Interest Period which begins on the
last Eurodollar Business Day of a calendar month (or on a day for which there is
no  numerically  corresponding  day in the  calendar  month  at the  end of such
Interest Period) shall,  subject to clause (c) below, end on the last Eurodollar
Business Day of a calendar month;  (c) if any Interest Period includes a date on
which any payment of principal of the Loan subject to such Eurodollar Tranche is
required  to be made  hereunder,  but  does not end on such  date,  then (i) the
principal  amount of each Eurodollar  Tranche required to be repaid on such date
shall have an Interest  Period  ending on such date,  and (ii) the  remainder of
each such  Eurodollar  Tranche shall have an Interest  Period  determined as set
forth above;  and (d) no Interest Period shall extend past the expiration of the
Credit Period.

     "Investment"  means,  with  respect  to  any  Person,  any  loan,  advance,
extension of credit,  capital  contribution to, investment in or purchase of the
stock  securities  of,  or  interests  in,  any  other  Person;  provided,  that
"Investment"  shall not include  current  customer and trade  accounts which are
payable in accordance with customary trade terms.

     "Lending  Office" means, as to any Bank, its Domestic Lending Office or its
Eurodollar Lending Office, as the context may require.
 
     "Letter of Credit  Exposure" of any Bank means,  collectively,  such Bank's
aggregate participation in the unfunded portion of Letters of Credit outstanding
at any time.

     "Letter  of Credit  Issuer"  means a Gerrity  Letter of Credit  Issuer or a
Patina Letter of Credit Issuer, as applicable.

     "Letters  of  Credit"  means,  collectively,  Patina  Letters of Credit and
Gerrity Letters of Credit.

     "Lien" means with respect to any asset, any mortgage, lien, pledge, charge,
security  interest  or  encumbrance  of any kind in respect of such  asset.  For
purposes of this Agreement,  Borrowers and their Subsidiaries shall be deemed to
own  subject  to a Lien any  asset  which is  acquired  or held  subject  to the
interest of a vendor or lessor under any  conditional  sale  agreement,  capital
lease or other title retention agreement relating to such asset.

     "Loan Papers" means this Agreement,  the Notes, the Patina Guarantees,  the
Collateral   Assignment  of  Intercompany   Loan,  the  Tax  Credit  Transaction
Agreement,  the Patina  Pledge  Agreement,  the Gerrity  Pledge  Agreement,  all
Mortgages now or at any time  hereafter  delivered  pursuant to Section 5.1, and
all other  certificates,  documents or instruments  delivered in connection with
this Agreement, as the foregoing may be amended from time to time.

     "Loans"  means the Patina  Term Loan,  the  Patina  Revolving  Loan and the
Gerrity Loan, collectively, and "Loan" means any of such Loans.

     "Margin  Regulations"  mean  Regulations  G,  T,  U and X of the  Board  of
Governors of the Federal Reserve System, as in effect from time to time.

     "Margin Stock" means "margin stock" as defined in Regulation U.


                                       15


     "Material   Agreement"  means  any  material  written  or  oral  agreement,
contract,  commitment,  or  understanding to which a Person is a party, by which
such  Person is  directly or  indirectly  bound,  or to which any assets of such
Person may be  subject,  which is not  cancelable  by such Person upon notice of
ninety  (90) days or less  without  liability  for  further  payment  other than
nominal penalty.

     "Material  Debt"  means  Debt of any  Borrower  or any of its  Subsidiaries
issued under one or more related or unrelated  agreements or  instruments  in an
aggregate principal amount exceeding $2,500,000.

     "Maximum  Lawful Rate" means,  for each Bank,  the maximum rate (or, if the
context so permits or requires,  an amount  calculated at such rate) of interest
which,  at the time in  question  would not cause the  interest  charged  on the
portion of the Loans owed to such Bank at such time to exceed the maximum amount
which such Bank would be allowed to contract  for,  charge,  take,  reserve,  or
receive under  applicable law after taking into account,  to the extent required
by  applicable  law,  any and all  relevant  payments or charges  under the Loan
Papers. To the extent the laws of the State of Texas are applicable for purposes
of  determining  the "Maximum  Lawful Rate," such term shall mean the "indicated
rate ceiling" from time to time in effect under Article 1.04,  Title 79, Revised
Civil  Statutes of Texas,  1925, as amended,  or, if permitted by applicable law
and effective  upon the giving of the notices  required by such Article 1.04 (or
effective  upon any other date  otherwise  specified  by  applicable  law),  the
"quarterly  ceiling" or  "annualized  ceiling" from time to time in effect under
such Article 1.04, whichever Administrative Agent (with the approval of Required
Banks) shall elect to  substitute  for the  "indicated  rate  ceiling," and vice
versa,  each such substitution to have the effect provided in such Article 1.04,
and Administrative Agent (with the approval of Required Banks) shall be entitled
to make such  election  from  time to time and one or more  times  and,  without
notice  to any  Borrower,  to  leave  any such  substitute  rate in  effect  for
subsequent periods in accordance with subsection (h)(1) of such Article 1.04.

     "Merger"  means the merger of Merger Sub with and into Gerrity  pursuant to
the Merger Agreement,  with Gerrity being the surviving corporation and pursuant
to which Gerrity will become a Subsidiary of Patina.

     "Merger  Agreement"  means that certain Amended and Restated  Agreement and
Plan of Merger  dated as of January 16, 1996 as amended and restated as of March
20, 1996, by and among SOCO, Patina, Gerrity and Merger Sub.

     "Merger Sub" means Patina Merger Corporation, a Delaware corporation, which
(a) prior to the Merger is a wholly owned Subsidiary of Patina,  and (b) will be
merged into Gerrity  pursuant to the Merger,  with Gerrity  being the  surviving
corporation.

     "Mortgages"  means  all  mortgages,  deeds of trust,  security  agreements,
pledge agreements and similar  documents,  instruments and agreements  creating,
evidencing, perfecting or otherwise establishing the Liens required by Article V
hereof as may have been  heretofore  or may  hereafter be granted or assigned to
Administrative Agent to secure repayment of the Obligations or any part thereof.

     "Nonrecourse  Debt"  means Debt (a) secured  solely by the assets  acquired
with the proceeds of such Debt,  (b) with respect to which none of the Borrowers
nor any of their Subsidiaries have any liability for repayment beyond the assets
pledged,  and (c) with  respect to which  Borrowers  have  delivered to Banks an
opinion  in a form  satisfactory  to  Required  Banks of counsel  acceptable  to
Administrative Agent stating that such indebtedness meets the criteria set forth
in (a) and (b) preceding.

     "Notes" means,  collectively,  the Patina Term Notes,  the Patina Revolving
Notes and the Gerrity Notes, and "Note" means any of such Notes.

                                       16



     "Obligations" means,  collectively,  the Patina Obligations and the Gerrity
Obligations.

     "Oil and Gas Hedge Transactions"  means transactions  pursuant to which any
Borrower or any of its  Subsidiaries  hedge the price to be received by them for
future  production of hydrocarbons,  including price swap agreements under which
any  Borrower  or any of its  Subsidiaries  agree to pay a price for a specified
amount of  hydrocarbons  determined  by reference  to a  recognized  market on a
specified  future date and the contracting  party agrees to pay such Borrower or
its Subsidiaries a fixed price for the same or similar amount of hydrocarbons.

     "Operating Lease" means any lease, sublease, license or similar arrangement
(other than a Capital  Lease and other than  leases  with a primary  term of one
year or less or which can be terminated by the lessee upon notice of one year or
less without incurring a penalty)  pursuant to which a Person leases,  subleases
or otherwise is granted the right to occupy, take possession of, or use property
whether real,  personal or mixed;  provided,  that  "Operating  Lease" shall not
include  oil, gas or mineral  leases  entered into or assigned to any Company in
the ordinary course of such Companies' business.

     "Participant" has the meaning given such term in Section 14.10(b).

     "Patina" means Patina Oil & Gas Corporation, a Delaware corporation.

     "Patina Borrowing Base" has the meaning set forth in Section 4.2 hereof.

     "Patina  Borrowing Base Deficiency"  means, as of any date, the amount,  if
any, by which (a) the Patina  Outstanding  Credit on such date,  exceeds (b) the
Patina  Borrowing Base in effect on such date;  provided,  that, for purposes of
computing  the  existence and amount of any Patina  Borrowing  Base  Deficiency,
Patina Letter of Credit Exposure will not constitute Patina  Outstanding  Credit
to the extent funds have been deposited with Administrative Agent to secure such
Patina Letter of Credit Exposure pursuant to Section 2.2(b).

     "Patina  Determination"  means any Patina Periodic  Determination or Patina
Special Determination.

     "Patina  Guaranty" means,  collectively,  Guarantees in the form of Exhibit
F-1 and  Exhibit  F-2  attached  hereto  to be  executed  by  Patina  and  SWAT,
respectively, pursuant to which Patina and SWAT shall each jointly and severally
guarantee payment and performance of the Gerrity Obligations.

     "Patina  Historical  Financial  Statements" means the consolidated  balance
sheet of Patina as of December 31, 1995, and the related consolidated statements
of operations  and cash flow for the Fiscal Year then ended (each prepared after
giving effect to the  contribution  of SOCO Wattenberg to Patina as contemplated
by the Merger  Agreement,  but prior to giving effect to the Merger) reported on
by Arthur Andersen LLP, copies of which have been provided to Banks.

     "Patina Letter of Credit  Exposure" of any Bank means such Bank's aggregate
participation in the unfunded portion of Patina Letters of Credit outstanding at
any time.

     "Patina  Letter of Credit  Issuer"  has the  meaning  set forth in  Section
2.2(b).

     "Patina  Letters of Credit" means,  collectively,  letters of credit issued
for the account of Patina and its  Restricted  Subsidiaries  pursuant to Section
2.2(b).

     "Patina  Loans" means the Patina Term Loan and the Patina  Revolving  Loan,
and "Patina Loan"

                                       17


means any of such Patina Loans.

     "Patina   Obligations"   means,   collectively,   all  present  and  future
indebtedness,  obligations  and  liabilities,  and all renewals  and  extensions
thereof,  or any  part  thereof,  of  Patina  and  its  Restricted  Subsidiaries
(including  obligations  under  the  Patina  Guarantees)  to any  Bank or to any
Affiliate of any Bank (a) arising pursuant to the Loan Papers,  and all interest
accrued  thereon  and  costs,  expenses  and  attorneys'  fees  incurred  in the
enforcement or collection  thereof,  (b) arising under or in connection with any
Oil  and  Gas  Hedge  Transaction  entered  into  between  Patina  or any of its
Restricted  Subsidiaries  and any Bank or any Affiliate of any Bank, (c) arising
under or in connection with any interest rate swap, cap, collar,  hedge or other
interest  rate  protection  device  entered  into  between  Patina or any of its
Restricted  Subsidiaries  and any Bank or any  Affiliate  of any  Bank,  and (d)
arising under or in connection  with any other  financial  "derivative"  product
provided by any Bank or any Affiliate of any Bank to any Company,  regardless of
whether such  indebtedness,  obligations and  liabilities are direct,  indirect,
fixed,  contingent,  liquidated,  unliquidated,  joint,  several  or  joint  and
several.  It is the intention of Borrowers,  Agent and Banks that Patina and its
Restricted   Subsidiaries   shall  be  jointly  and  severally  liable  for  all
obligations of each other and for all  obligations of Gerrity and its Restricted
Subsidiaries under the Loan Papers.

     "Patina  Outstanding  Credit"  means,  at any  time,  the  sum  of (i)  the
aggregate  Patina Letter of Credit Exposure at such time plus (ii) the aggregate
principal balance of all Patina Revolving Loans.

     "Patina  Periodic  Determination"  means any  determination  of the  Patina
Borrowing Base pursuant to Section 4.2.

     "Patina Pledge  Agreement"  means a Pledge Agreement in the form of Exhibit
D-2 attached  hereto to be executed by Patina  pursuant to which Patina  pledges
the issued and  outstanding  capital  stock of SWAT and  Gerrity of every  class
(other than the shares of Gerrity  Preferred  Stock which are not  exchanged for
Preferred  Stock pursuant to the Exchange Offer made pursuant to Section 7.26 of
the Merger Agreement) to Administrative Agent to secure the Patina Obligations.

     "Patina  Related  Assets"  means  all  pipelines,  gathering  systems,  gas
processing  plants  and  similar  assets  owned  by  Patina  and its  Restricted
Subsidiaries, including, related personal property or other fixed assets and all
easements,  servitudes and similar real property  interests  owned by Patina and
its Restricted Subsidiaries on which such systems are located.

     "Patina  Related Assets Reports" means reports to be delivered by Patina to
Banks  simultaneously  with each delivery by Patina of a Patina  Reserve  Report
pursuant  to  Sections  4.1 and 4.3  which  shall  (a) be in form and  substance
acceptable to Required Banks, (b) be prepared by the Approved Petroleum Engineer
(with the exception of the Patina Related Asset Report  required to be delivered
on or  before  September  15 of each  year or  pursuant  to any  Patina  Special
Determination  which may be prepared by Patina's  in-house  staff) in accordance
with customary and prudent practices of the petroleum engineering industry,  and
(c) which shall set forth the  discounted  present  value of the Patina  Related
Assets owned by Patina (which  valuation shall be determined as of the same date
as the  discounted  present  value of the oil and gas  properties  which are the
subject of the Patina Reserve Report delivered simultaneously therewith pursuant
to Sections 4.1 and 4.3 as applicable)  as determined by the Approved  Petroleum
Engineer or Patina's  in-house staff (as applicable).  Each Patina Related Asset
Report shall also designate the owner (either  Patina,  or one of its Restricted
Subsidiaries) of each Patina Related Asset which is the subject of such report.

     "Patina  Reserve  Report" means an engineering  analysis of the oil and gas
properties owned by Patina and its Restricted Subsidiaries in form and substance
acceptable to Required Banks prepared by the

                                       18


Approved  Petroleum  Engineer or reviewed and approved by the Approved Petroleum
Engineer  (with the  exception  of the Patina  Reserve  Reports  required  to be
delivered  on or before  September  15 of each year  pursuant  to Section 4.1 or
pursuant to any Patina Special  Determination  pursuant to Section 4.3 which may
be prepared by  Borrower's  in-house  staff) in  accordance  with  customary and
prudent practices in the petroleum engineering industry and Financial Accounting
Standards  Board  Statement  69.  Until  superseded  by delivery of a subsequent
Patina Reserve Report  pursuant to Section 4.1 or Section 4.3, each reference to
Patina Reserve Report shall constitute a reference to the Current Patina Reserve
Report.

     "Patina  Restricted  Payment  Limit"  means (a) as of any date  during  the
period  from the  Closing  Date  through  the date of  delivery  to the Banks of
Patina's  consolidated  financial  statements required by Section 8.1(d) for the
Fiscal Quarter ending June 30, 1997, an amount equal to Patina's Allocated Share
of  the  Initial  Restricted  Payment  Limit,  and  (b)  as  of  any  date  (the
"measurement  date") on and after the date of  delivery to the Banks of Patina's
consolidated  financial  statements  required  by Section  8.1(d) for the Fiscal
Quarter  ending June 30, 1997,  the sum of (i) Patina's  Allocated  Share of the
Initial Restricted Payment Limit, plus (ii) an amount equal to five percent (5%)
of Patina's  Consolidated  EBITDA excluding Gerrity and its Subsidiaries for the
period  commencing July 1, 1996 and ending on the last day of the Fiscal Quarter
most recently ended as of the measurement  date for which Patina's  consolidated
financial  statements required by Section 8.1(d) (in the case of the first three
quarters  of each  Fiscal  Year,  and  Section  8.1(c) in the case of the fourth
Fiscal Quarter of each Fiscal Year) have been delivered to the Banks.

     "Patina  Revolving  Availability"  means,  at  any  time,  (a)  the  Patina
Borrowing Base in effect at such time, minus (b) the Patina  Outstanding  Credit
at such time.

     "Patina  Revolving  Commitment"  means,  with  respect  to  any  Bank,  the
commitment  of such Bank to lend its  Commitment  Percentage of the Total Patina
Revolving  Commitment.  The amount of each Bank's Patina Revolving Commitment is
the amount of such  commitment set forth opposite such Bank's name on Schedule 1
hereto,  as such  amount  may be  terminated  or  reduced  from  time to time in
accordance with the provisions hereof.

     "Patina Revolving Loan" means a revolving loan in an aggregate amount up to
$102,000,000  to be made to Patina and SWAT  pursuant  to the  Patina  Revolving
Commitments in accordance with Section 2.2 hereof.

     "Patina Revolving Note" means a promissory note of Patina and SWAT, payable
to the  order of a Bank,  in  substantially  the  form of  Exhibit  C-2  hereto,
evidencing the obligation of Patina and SWAT, jointly and severally, to repay to
such Bank its Commitment  Percentage of the Patina Revolving Loan, together with
all modifications,  extensions, renewals and rearrangements thereof, and "Patina
Revolving Notes" means all of such Patina Revolving Notes.

     "Patina  Special  Determination"  means  any  determination  of the  Patina
Borrowing Base pursuant to Section 4.3.

     "Patina Term  Availability"  means,  at any time, (a) the Total Patina Term
Commitment in effect at such time, minus (b) the principal balance of the Patina
Term Loan at such time.

     "Patina Term Commitment" means, with respect to any Bank, the commitment of
such Bank to lend its Commitment Percentage of the Total Patina Term Commitment.
The  amount  of  each  Bank's  Patina  Term  Commitment  is the  amount  of such
commitment  set forth  opposite  such Bank's name on Schedule 1 hereto,  as such
amount may be terminated or reduced from time to time in accordance with

                                       19


the provisions hereof.

     "Patina Term Commitment Termination Date" means May 2, 1997.

     "Patina Term Loan" means a term loan in an amount up to  $87,000,000  to be
made to Patina and SWAT  pursuant to the Patina Term  Commitments  in accordance
with Section 2.1 hereof.

     "Patina Term Note" means a promissory  note of Patina and SWAT,  payable to
the order of a Bank, in substantially the form of Exhibit C-3 hereto, evidencing
the obligation of Patina and SWAT, jointly and severally,  to repay to such Bank
its  Commitment   Percentage  of  the  Patina  Term  Loan,   together  with  all
modifications, extensions, renewals and rearrangements thereof, and "Patina Term
Notes" means all of such Patina Term Notes collectively.

     "PBGC"  means  the  Pension  Benefit  Guaranty  Corporation  or any  entity
succeeding to any or all of its functions under ERISA.

     "Periodic Determination" means any Patina Periodic Determination or Gerrity
Periodic Determination.

     "Permitted Encumbrances" means with respect to any asset:

     (a) Liens in favor of the Banks or their Affiliates under the Loan Papers;

     (b) Minor  defects in title  which do not  secure the  payment of money and
otherwise  have no material  adverse effect on the value or operation of oil and
gas properties,  and for the purposes of this Agreement, a minor defect in title
shall include (i) those  instances where record title to an oil and gas lease is
in a predecessor in title to any Borrower or any of its Subsidiaries,  but where
such  Borrower  or any of its  Subsidiaries,  by reason  of a  farmout  or other
instrument  is presently  entitled to receive an  assignment  of its interest or
other evidence of title and the appropriate  Person is proceeding  diligently to
obtain such assignment, and (ii) easements, rights-of-way,  servitudes, permits,
surface  leases and other similar rights in respect of surface  operations,  and
easements for pipelines,  streets,  alleys,  highways,  telephone  lines,  power
lines, railways and other easements and rights-of-way, on, over or in respect of
any of the properties of Borrowers (or their  Subsidiaries,  as applicable) that
are customarily granted in the oil and gas industry; so long as, with respect to
any of such  minor  defects  in  title,  the same are  minor  defects  which are
customary  and  usual in the oil and gas  industry  and  which  are  customarily
accepted by a reasonably prudent operator dealing with its properties;

     (c) Inchoate statutory or operators' liens securing  obligations for labor,
services,  materials and supplies  furnished to oil and gas properties which are
not delinquent (except to the extent permitted by Section 8.7);

     (d) Mechanic's, materialmen's,  warehouseman's,  journeyman's and carrier's
liens and other  similar  liens  arising by  operation  of law or statute in the
ordinary  course of  business  which are not  delinquent  (except  to the extent
permitted by Section 8.7);

     (e)  Production  sales  contracts,   gas  balancing  agreements  and  joint
operating agreements;  provided,  that the amount of all gas imbalances known to
any Authorized  Officer of any Borrower and the amount of all  production  which
has been paid for but not delivered shall have been disclosed or otherwise taken
into account in the Reserve Reports delivered to Banks hereunder;


                                       20


     (f) Liens for Taxes or assessments not yet due or not yet  delinquent,  or,
if  delinquent,  that are being  contested in good faith in the normal course of
business by appropriate action, as permitted by Section 8.7;

     (g) All rights to consent by,  required  notices to, filings with, or other
actions by,  governmental  entities in connection with the sale or conveyance of
oil and gas leases or interests therein if any Borrower (or its Subsidiaries, as
applicable)  is  entitled to such  consent,  the same are  customarily  obtained
subsequent to such sale or conveyance and the  appropriate  Person is proceeding
diligently to obtain such consent, notice or filing;

     (h) The terms and  provisions of any of the oil and gas leases  pursuant to
which any Borrower (or its Subsidiaries, as applicable) derives its interests;

          (i) Lease  burdens  payable to third parties which are deducted in the
     calculation of discounted  present value in the Reserve Reports  including,
     without limitation, any royalty,  overriding royalty, net profits interest,
     production payment,  carried interest or reversionary  working interest and
     which have been disclosed to the Administrative Agent in writing; provided,
     however,  that no Borrower shall be required to disclose such lease burdens
     unless the same are lease  burdens  which are not  customarily  and usually
     found in the oil and gas  industry  or unless  the same are  lease  burdens
     which obligate such Borrower and/or its Subsidiaries,  as applicable,  in a
     fashion not customarily and usually found in the oil and gas industry;

     (j) All  applicable  laws,  rules and  orders of  governmental  authorities
having jurisdiction over the affairs of any Borrower;

     (k) Liens  securing Debt incurred to finance the  acquisition of the assets
which are the  subject  of such Liens (to the extent  permitted  by Section  9.1
hereof); and

     (l) Liens securing the  obligations due and owing under the Existing Credit
Agreement; provided that such Liens are assigned to Administrative Agent for the
ratable benefit of the Banks after the Closing Date.

     "Permitted   Investment"  means,  with  respect  to  any  Borrower  or  any
Restricted  Subsidiary,  (a) readily marketable direct obligations of the United
States of America,  (b) fully insured time deposits and  certificates of deposit
with  maturities of one (1) year or less of any commercial bank operating in the
United  States  having  capital  and  surplus in excess of  $50,000,000.00,  (c)
commercial  paper of a domestic  issuer if at the time of purchase such paper is
rated in one of the two  highest  ratings  categories  of  Standard  and  Poor's
Corporation or Moody's Investors Service,  (d) any reverse repurchase  agreement
entered into with a commercial bank meeting the criteria described in clause (b)
preceding which is secured by a fully perfected  security interest in a security
of the type  described in clauses (a) through (c) preceding  and which  security
has a market value at the time such reverse repurchase agreement is entered into
of not less than 100% of the  obligation  of such  commercial  bank  under  such
reverse  repurchase  agreement,  (e)  Investments  by Patina and its  Restricted
Subsidiaries in Patina or Restricted  Subsidiaries of Patina, (f) Investments by
Restricted   Subsidiaries  of  Gerrity  in  Gerrity  and  in  other   Restricted
Subsidiaries of Gerrity,  (g) Investments by Gerrity in Restricted  Subsidiaries
of Gerrity  consisting of loans which are evidenced by promissory  notes payable
on demand and which do not exceed  $1,000,000 in the aggregate at any time;  (h)
Investments  outstanding  as of the date hereof  described on Schedule 4 hereof,
(i)  Investments  by Patina  in  Gerrity  Preferred  Stock  which are  permitted
pursuant to Section 9.2, and (j)  Investments by Patina which are made (i) after
the Patina Term  Commitments  have been  terminated and the Patina Term Loan has
been paid in full, and (ii) which when made, together with all other

                                       21


Investments  made pursuant to this clause (i) do not exceed an amount  (measured
at cost)  greater than five percent  (5%) of the Patina  Borrowing  Base then in
effect.

     "Person" means an individual, a corporation, a partnership, an association,
a trust or any other entity or organization, including a government or political
subdivision or an agency or instrumentality thereof.

     "Plan" means at any time an employee  pension  benefit plan which is now or
was  previously  covered by Title IV of ERISA or subject to the minimum  funding
standards under Section 412 of the Code.

     "Preferred  Stock" means  Patina's  Series A  Convertible  Preferred  Stock
containing the rights and  preferences set forth in, and issued pursuant to, the
Preferred Stock Designation.

     "Preferred  Stock  Designation"  means the  Certificate  of  Designation of
Rights and  Preferences of Series A Preferred  Stock filed with the Secretary of
State of  Delaware  on or about  May 1,  1996,  setting  forth  the  rights  and
preferences of the Preferred Stock.

     "Process Agent" has the meaning set forth in Section 14.12.

     "Pro  Forma  Financial  Statements"  means  (a)  the  unaudited  Pro  Forma
Condensed  Consolidated Balance Sheet of Patina as of December 31, 1995, and (b)
the  Unaudited Pro Forma  Condensed  Consolidated  Statement of  Operations  for
Patina for the Fiscal Year ended December 31, 1995.

     "Pro  Forma  Segregated  Financial  Statements"  means  (a) the  Pro  Forma
Unaudited Consolidated Balance Sheet of Gerrity as of December 31, 1995, and (b)
the Unaudited  Consolidated  Balance Sheet of Patina  excluding  Gerrity and its
Subsidiaries  as of December 31, 1995,  which are attached  hereto as Schedule 5
and Schedule 6, respectively.

     "Projection"  means the  projection  of  Patina's  consolidated  results of
operations  for the Fiscal Year ended December 31, 1996, a true and correct copy
of which is attached hereto as Schedule 7.

     "Ratio of Consolidated Funded Debt to Adjusted  Consolidated EBITDA" means,
for any Person as of the last day of any Fiscal Quarter,  such Person's ratio of
Consolidated Funded Debt on such day to its Adjusted Consolidated EBITDA for the
period  of four (4)  Fiscal  Quarters  ended  on such day (or to its  Annualized
Adjusted  Consolidated EBITDA to the extent such ratio is being calculated as of
the last day of any of the first three (3) complete  Fiscal  Quarters  after the
Closing Date).

     "Recognized  Value"  means,  with  respect to oil and gas  properties,  the
pre-tax  value  of such  properties  determined  in  accordance  with  Financial
Accounting  Standards Board Statement 69,  generally known as the  "standardized
measure of discounted cash flow".

     "Registration  Rights Agreement" means the Registration Rights Agreement to
be entered into between SOCO and Patina pursuant to the Merger Agreement.

     "Registration Statement" means the Registration Statement on Form S-4 filed
by Patina with the  Securities  Exchange  Commission  on January 24, 1996 having
Registration No. 333-572 related to the issuance of the Exchange  Securities and
certain shares of Common Stock issuable upon  conversion of Preferred  Stock, as
amended by (i) Amendment  No. 1 to Form S-4 filed by Patina with the  Securities
Exchange  Commission  on March 20, 1996,  and (ii)  Amendment  No. 2 to Form S-4
filed by Patina with

                                       22


the Securities Exchange Commission on April 2, 1996.

     "Regulation U" means  Regulation U of the Board of Governors of the Federal
Reserve System as in effect from time to time.

     "Related  Assets" means,  collectively,  the Gerrity Related Assets and the
Patina Related Assets.

     "Related Assets Reports"  means,  collectively,  the Gerrity Related Assets
Reports and the Patina Related Assets Reports, and "Related Assets Report" means
a Gerrity Related Assets Report or a Patina Related Assets Report.

     "Rentals" means amounts payable by a lessee under an Operating Lease.

     "Request for Borrowing" has the meaning set forth in Section 2.4.

     "Request  for Letter of Credit" has the meaning  given such term in Section
2.5.

     "Required  Banks" means Banks holding greater than sixty-six and two-thirds
percent (66 2/3%) of the Total Commitment.

     "Reserve  Reports"  means,  collectively,  a Patina  Reserve  Report  and a
Gerrity  Reserve Report and "Reserve  Report" means a Patina Reserve Report or a
Gerrity Reserve Report individually.

     "Restricted  Payment" means (a) any  Distribution  by Gerrity or any of its
Restricted  Subsidiaries  to any Person  other than  Gerrity or Patina,  (b) any
Distribution  by  Patina  or any  of  its  Restricted  Subsidiaries  other  than
Distributions by such Restricted Subsidiaries to Patina, and (c) the retirement,
redemption  or prepayment  prior to the scheduled  maturity by any Borrower or a
Restricted  Subsidiary of any Borrower of Debt of any Borrower or any Restricted
Subsidiary of any Borrower (including without limitation, retirement, redemption
or prepayment prior to the scheduled  maturity of any of the Subordinate  Notes,
but expressly  excluding  the  retirement,  redemption  or  prepayment  prior to
scheduled maturity of the Intercompany Loan).

     "Restricted   Subsidiary"  means,  with  respect  to  each  Borrower,   the
Subsidiaries of such Borrower described as Restricted Subsidiaries on Schedule 9
attached  hereto.   "Restricted  Subsidiary"  shall  also  refer  to  any  other
Subsidiary of any Borrower which Required Banks and such Borrower hereafter,  in
their  sole   discretion,   designate  in  writing  a   Restricted   Subsidiary.
Notwithstanding  anything to the contrary  contained herein or contained in such
Schedule 9 Gerrity and its Subsidiaries  shall not be a "Restricted  Subsidiary"
of Patina for purposes of this Agreement.

     "Rollover Notice" has the meaning given such term in Section 2.7(c).

     "Schedule"  means a "schedule"  attached to this Agreement and incorporated
herein by reference, unless specifically indicated otherwise.

     "Section"  refers to a "section" or "subsection"  of this Agreement  unless
specifically indicated otherwise.

     "SOCO"  means Snyder Oil  Corporation,  a Delaware  corporation,  which (a)
prior to the Merger,  is the legal and beneficial  owner of one hundred  percent
(100%) of the issued and outstanding capital stock of Patina of every class, and
(b) immediately after the Merger, will be the legal and beneficial owner

                                       23


of  seventy  percent  (70%) of the  issued and  outstanding  Common  Stock (on a
non-diluted basis).

     "SOCO Credit  Agreement" means that certain Fifth Restated Credit Agreement
dated as of June 30, 1994,  by and among SOCO,  NationsBank  of Texas,  N.A., as
Agent and certain financial institutions parties thereto as Banks, as amended by
that certain Letter  Agreement dated May 1, 1995, that certain Second  Amendment
to Fifth  Restated  Credit  Agreement  dated June 30, 1995,  that certain  Third
Amendment to Fifth Restated  Credit  Agreement  dated November 1, 1995, and that
certain Fourth Amendment to Fifth Restated Credit Agreement dated April 4, 1996.

     "SOCO Wattenberg" means the assets and operations  described and defined in
the Merger  Agreement as the  "Business",  which assets and operations  include,
without limitation, the assets, operations and capital stock of SWAT.

     "Special  Determination" means any Patina Special  Determination or Gerrity
Special Determination.

     "Subordinate  Note Redemption Date" means the date specified as the "Change
of  Control  Payment  Date" in the  "Change  of Control  Offer"  required  to be
delivered  by Gerrity as a result of the Merger  pursuant to Section 4.18 of the
Indenture.

     "Subordinate  Note  Redemption  Period" means the period  commencing on the
Closing Date and ending on the Subordinate Note Redemption Date.

     "Subordinate  Notes" means Gerrity's 11 3/4% Senior  Subordinate  Notes due
July 15, 2004.

     "Subsidiary"  means,  for any Person,  any  corporation  or other entity of
which  securities or other ownership  interests  having ordinary voting power to
elect a majority of the board of directors or other persons  performing  similar
functions  (including  that of a general  partner)  are at the time  directly or
indirectly  owned,  collectively,  by such Person and any  Subsidiaries  of such
Person.  The term Subsidiary shall include  Subsidiaries of Subsidiaries (and so
on).

     "Surplus Commitment" has the meaning set forth in Section 13.5.

     "SWAT" means SOCO Wattenberg  Corporation,  a Delaware corporation,  which,
(a) prior to the  contribution  by SOCO of SOCO Wattenberg to Patina pursuant to
the Merger Agreement,  is a wholly owned Subsidiary of SOCO, and (b) thereafter,
will be a wholly owned Subsidiary of Patina.

     "Tax Credit Transaction Agreement" means a Tax Credit Transaction Agreement
to be entered into among Borrowers,  Agents and Banks  substantially in the form
of Exhibit J attached hereto.

     "Taxes"  means  all  taxes,  assessments,  filing  or other  fees,  levies,
imposts, duties,  deductions,  withholdings,  stamp taxes, interest equalization
taxes,  capital  transaction taxes,  foreign exchange taxes or other charges, or
other charges of any nature whatsoever, from time to time or at any time imposed
by law or any federal,  state or local governmental  agency. "Tax" means any one
of the foregoing.

     "Termination Date" means July 15, 1999.

     "Total Commitment" means the aggregate of all Banks' Commitments.

     "Total Gerrity Commitment" means the Gerrity Commitments of the Banks in an
initial aggregate amount of $138,000,000.

                                       24



     "Total Patina Revolving  Commitment" means the Patina Revolving Commitments
of the Banks in an initial aggregate amount of $102,000,000.

     "Total Patina Term  Commitment"  means the Patina Term  Commitments  of the
Banks in an initial aggregate amount of $87,000,000.

     "Tranche"  means an Adjusted Base Rate Tranche or a Eurodollar  Tranche and
"Tranches"  means  Adjusted  Base Rate  Tranches or  Eurodollar  Tranches or any
combination thereof.

     "Transfer Agent" means the American Stock Transfer & Trust Company.

     "Transfer  Documents"  means (a) the  Assignment,  Bill of Sale and Mineral
Deed dated May 2, 1996,  between SOCO and Patina,  and between  Patina and SWAT;
(b) the Assignment and Bill of Sale dated May 2, 1996,  between SOCO and Patina,
and between Patina and SWAT;  (c) the Bill of Sale dated May 2, 1996,  from SOCO
to Patina, and from Patina to SWAT; (d) the Deed dated May 2, 1996, from SOCO to
Patina,  and from Patina to SWAT  (relating  to real  property  in Weld  County,
Colorado);  and (e) the Deed  dated May 2, 1996,  from SOCO to Patina,  and from
Patina to SWAT (relating to real property in Morgan County, Colorado.

     "Type" means with  reference  to a Tranche,  the  characterization  of such
Tranche as an Adjusted  Base Rate Tranche or a Eurodollar  Tranche  based on the
method by which the accrual of interest on such Tranche is calculated.

     "Unrestricted  Subsidiary"  shall mean any Subsidiary of any Borrower which
is not a Restricted Subsidiary.

     SECTION  1.2.  Accounting  Terms  and   Determinations.   Unless  otherwise
specified  herein,  all accounting  terms used herein shall be interpreted,  all
accounting  determinations hereunder shall be made, and all financial statements
required  to be  delivered  hereunder  shall be  prepared,  in  accordance  with
generally accepted accounting principles as in effect from time to time, applied
on  a  basis   consistent  with  the  most  recent  audited   consolidated   and
consolidating   financial   statements  of  the  applicable   Borrower  and  its
Consolidated  Subsidiaries delivered to Banks except for changes concurred in by
Borrowers'  independent  certified public accountants and which are disclosed to
Administrative Agent on the next date on which financial statements are required
to be delivered to Banks pursuant to Sections 8.1(a),  (b), (c) (d), (e) or (f);
provided  that,  unless  Borrower and Required  Banks shall  otherwise  agree in
writing,  no such change shall  modify or affect the manner in which  compliance
with the  covenants  contained  in  Article  X are  computed  such that all such
computations  shall  be  conducted  utilizing  financial  information  presented
consistently  with prior periods.  As used herein,  any reference  herein to the
consolidated  financial condition or results of operation of Patina as of a date
or for a period  which is  qualified  by the phrase  "excluding  Gerrity and its
Subsidiaries" or by any similar phrase shall refer to the  consolidated  results
of  operations  or  financial  condition  of  Patina as of such date or for such
period  excluding any amount  attributable to the assets,  liabilities,  capital
stock,  revenues,  profits,  losses or results of  operations of Gerrity and its
Subsidiaries as of such date or for such period (including,  without limitation,
any part of the Gerrity Obligations  guaranteed by Patina pursuant to the Patina
Guarantees.)



                                       25


                                   ARTICLE II

                              THE CREDIT FACILITIES

     SECTION 2.1. Patina Term Commitment. Each Bank severally agrees, subject to
the terms and  conditions  set forth in this  Agreement,  to lend to Patina  and
SWAT,  collectively in (a) one Borrowing on the Subordinate Note Redemption Date
such Bank's  Commitment  Percentage  of an amount equal to the  remainder of (i)
101% of the principal amount of Subordinate Notes tendered for redemption on the
Subordinate  Note  Redemption Date as a result of the Merger pursuant to Section
4.18 of the Indenture,  minus (ii)  $14,000,000,  and (b) one or more Borrowings
subsequent to the  Subordinate  Note  Redemption  Date,  such Bank's  Commitment
Percentage of amounts  equal to the lesser of (i) the purchase  price to be paid
by Gerrity for Subordinate Notes being repurchased by Gerrity  subsequent to the
Subordinate  Note Redemption  Date, or (ii) the principal  amount of Subordinate
Notes being repurchased by Gerrity subsequent to the Subordinate Note Redemption
Date.  Borrowings under the Patina Term Commitments  shall be used by Patina and
SWAT solely to make advances to Gerrity under the  Intercompany  Loan to be used
by Gerrity to repurchase  or redeem  Subordinate  Notes  tendered to Gerrity for
redemption or  repurchase as a result of the Merger  pursuant to Section 4.18 of
the Indenture or to otherwise  repurchase  Subordinate  Notes  subsequent to the
Subordinate  Note Redemption  Date. In no event shall Patina or SWAT be entitled
to a Borrowing  under the Patina Term  Commitments  unless and until the Gerrity
Refinancing Reserve has been fully exhausted for the purposes of repurchasing or
redeeming  Subordinates Notes or making principal payments or prepayments on the
Intercompany  Loan.  No Bank shall be  obligated  to loan under its Patina  Term
Commitment (i) after the Patina Term  Commitment  Termination  Date,  (ii) which
would cause the aggregate  amount of all Borrowings  under the Total Patina Term
Commitment  to exceed the amount of the Total Patina Term  Commitment,  or (iii)
which would cause the aggregate amount advanced by such Bank with respect to the
Patina Term Loan to exceed such Bank's Patina Term Commitment. Amounts repaid on
the Patina Term Loan may not be reborrowed.

     SECTION 2.2. Patina Revolving  Commitment.  (a) Each Bank severally agrees,
subject to Section  2.2(c) and the other terms and  conditions set forth in this
Agreement, to lend to Patina and SWAT from time to time during the Credit Period
amounts not to exceed in the aggregate at any one time  outstanding,  the amount
of such Bank's Patina  Revolving  Commitment  reduced by an amount equal to such
Bank's  Patina  Letter of Credit  Exposure.  Each  Borrowing  shall (i) be in an
aggregate  principal  amount of  $500,000  or any larger  integral  multiple  of
$100,000 (except that any Adjusted Base Rate Borrowing may be in an amount equal
to the Patina  Revolving  Availability at such time), and (ii) be made from each
Bank ratably in accordance with its respective Commitment Percentage. Subject to
the foregoing limitations and the other provisions of this Agreement, Patina and
SWAT may borrow under this Section  2.2(a),  repay amounts  borrowed  under this
Section 2.3(a) and request new Borrowings under this Section 2.3(a).

     (b) Administrative  Agent, or such Bank designated by Administrative  Agent
which  (without  obligation  to do so) consents to the same  ("Patina  Letter of
Credit Issuer"),  will, from time to time during the Credit Period, upon request
by Patina and SWAT,  issue Patina Letters of Credit for the account of Patina or
any Restricted  Subsidiary designated by Patina and SWAT, so long as (i) the sum
of (A) the total Patina  Letter of Credit  Exposure then  existing,  and (B) the
amount of the requested Patina Letter of Credit does not exceed $10,000,000, and
(ii) Patina and SWAT would be entitled to a Borrowing  under Sections 2.2(a) and
(c) in the amount of the requested Patina Letter of Credit.  Not less than three
(3) Domestic  Business Days prior to the requested  date of issuance of any such
Patina  Letter of Credit,  Patina  and SWAT (and any  Restricted  Subsidiary  of
Patina for whose  account such Patina  Letter of Credit is being  issued)  shall
execute and deliver to Patina Letter of Credit  Issuer,  Patina Letter of Credit
Issuer's  customary letter of credit  application.  Each Patina Letter of Credit
shall be in form and substance

                                       26


acceptable to Patina Letter of Credit  Issuer.  No Patina Letter of Credit shall
have an expiration date later than the earlier of (i) the  Termination  Date, or
(ii) one (1) year  from the date of  issuance.  Upon the date of  issuance  of a
Patina Letter of Credit,  Patina Letter of Credit Issuer shall be deemed to have
sold  to  each  other  Bank,  and  each  other  Bank  shall  be  deemed  to have
unconditionally and irrevocably purchased from Patina Letter of Credit Issuer, a
non-recourse  participation  in the related  Patina  Letter of Credit and Patina
Letter of Credit  Exposure  equal to such Bank's  Commitment  Percentage of such
Patina Letter of Credit and Letter of Credit Exposure. Upon request of any Bank,
but not less often than quarterly,  Administrative Agent shall provide notice to
each Bank by  telephone,  teletransmission  or telex  setting  forth each Patina
Letter of Credit  issued  and  outstanding  pursuant  to the  terms  hereof  and
specifying the Patina Letter of Credit Issuer,  beneficiary  and expiration date
of each such Patina Letter of Credit,  each Bank's  participation  percentage of
each such Patina  Letter of Credit and the actual  dollar  amount of each Bank's
participation  held by the Patina  Letter of Credit  Issuer(s)  thereof for such
Bank's account and risk. If any Patina Letter of Credit is presented for payment
by the beneficiary  thereof,  Administrative  Agent shall cause an Adjusted Base
Rate Borrowing to be made from each Bank  participating in such Patina Letter of
Credit and Patina Letter of Credit Exposure to reimburse Patina Letter of Credit
Issuer for the payment under the Patina Letter of Credit,  whether or not Patina
and SWAT would then be entitled to a Borrowing pursuant to the terms hereof, and
each Bank which  participated  in such Patina Letter of Credit and Patina Letter
of Credit Exposure shall be obligated to lend its Commitment  Percentage of such
Adjusted Base Rate  Borrowing.  At the time of issuance of each Patina Letter of
Credit, Patina and SWAT shall pay to Administrative Agent a fee equal to the sum
of (i) the greater of (A) $500,  or (B) one-  eighth of one  percent  (1/8%) per
annum (based on the face amount and term of such Patina Letter of Credit),  plus
(ii)  the  greater  of (A)  $500,  or (B) a per  annum  percentage  equal to the
Applicable  Margin in effect on the date of issuance  of such  Patina  Letter of
Credit  (based  upon the  amount  and term of such  Patina  Letter  of  Credit).
Administrative  Agent shall distribute the fee described in subclause (i) of the
preceding  sentence  paid on  issuance  of such  Patina  Letter of Credit to the
Patina Letter of Credit  Issuer which issued such Patina  Letter of Credit.  The
remaining  portion  of such fee  shall be paid to  Banks  participating  in such
Patina  Letter of Credit  and  Patina  Letter  of Credit  Exposure  based on the
relative  amounts of their  participation  in such  Patina  Letter of Credit and
Patina Letter of Credit Exposure.

     Upon the  occurrence of an Event of Default,  Patina and SWAT,  jointly and
severally,  shall, on the next succeeding  Domestic  Business Day,  deposit with
Administrative  Agent such funds as  Administrative  Agent may request,  up to a
maximum amount equal to the aggregate  existing Patina Letter of Credit Exposure
of all Banks. Any funds so deposited shall be held by  Administrative  Agent for
the ratable benefit of all Banks as security for the  outstanding  Patina Letter
of Credit Exposure and the other Patina  Obligations,  and Patina and SWAT will,
in connection  therewith,  execute and deliver such security  agreements in form
and  substance  satisfactory  to  Administrative  Agent  which  it  may,  in its
discretion,  require.  As drafts or demands for payment are presented  under any
Patina Letter of Credit,  Administrative Agent shall apply such funds to satisfy
such drafts or demands.  When all Patina  Letters of Credit have expired and the
Patina  Obligations  have been repaid in full (and the  Commitments of all Banks
have  terminated) or such Event of Default has been cured to the satisfaction of
Required Banks, Administrative Agent shall release to Patina and SWAT (as Patina
shall  designate)  any  remaining  funds  deposited  under this Section  2.2(b).
Whenever Patina and SWAT are required to make deposits under this Section 2.2(b)
and fail to do so on the day such  deposit is due,  Administrative  Agent or any
Bank  may,  without  notice to Patina or SWAT,  make such  deposit  (whether  by
application  of  proceeds  of any  collateral  for the  Patina  Obligations,  by
transfers from other accounts  maintained with any Bank or otherwise)  using any
funds then available to any Bank of Patina, and of its Restricted  Subsidiaries,
any  guarantor,  or any other  Person  liable  for all or any part of the Patina
Obligations.

     (c) No Bank will be obligated to lend to Patina and SWAT under this Section
2.2 or incur Patina Letter of Credit Exposure,  and Patina and SWAT shall not be
entitled to borrow hereunder

                                       27


or obtain  Patina  Letters of Credit  hereunder  (i) during the existence of any
Borrowing  Base  Deficiency,  or (ii) in an amount which would cause a Borrowing
Base  Deficiency.  Nothing in this  Section  2.2(c) shall be deemed to limit any
Bank's  obligation to fund its ratable  share of Adjusted  Base Rate  Borrowings
with respect to its  participation  in Patina Letters of Credit made as a result
of any drawing under any Patina Letter of Credit.

     SECTION 2.3. Gerrity Revolving Commitment.  (a) Each Bank severally agrees,
subject to Section 2.3(c) and (d) and 4.8 and the other terms and conditions set
forth in this Agreement,  to lend to Gerrity from time to time during the Credit
Period amounts not to exceed in the aggregate at any one time  outstanding,  the
amount of such  Bank's  Gerrity  Commitment  reduced by an amount  equal to such
Bank's  Gerrity  Letter  of  Credit  Exposure.  Each  Borrowing  shall  be in an
aggregate  principal  amount of  $500,000  or any larger  integral  multiple  of
$100,000 (except that any Adjusted Base Rate Borrowing may be in an amount equal
to the Gerrity Availability at such time), and (ii) shall be made from each Bank
ratably in accordance with its respective Commitment Percentage.  Subject to the
foregoing  limitations and the other  provisions of this Agreement,  Gerrity may
borrow under this Section  2.3(a),  repay  amounts  borrowed  under this Section
2.3(a) and request new Borrowings under this Section 2.3(a).

     (b) Administrative  Agent, or such Bank designated by Administrative  Agent
which  (without  obligation to do so) consents to the same  ("Gerrity  Letter of
Credit Issuer") will,  from time to time during the Credit Period,  upon request
by Gerrity,  issue  Gerrity  Letters of Credit for the account of Gerrity or any
Restricted  Subsidiary of Gerrity designated by Gerrity,  so long as (i) the sum
of (A) the total Gerrity Letter of Credit  Exposure then  existing,  and (B) the
amount of the requested  Gerrity  Letter of Credit does not exceed  $10,000,000,
and (ii) Gerrity would be entitled to a Borrowing under Sections 2.3(a), (c) and
(d) in the amount of the requested Gerrity Letter of Credit. Not less than three
(3) Domestic  Business Days prior to the requested  date of issuance of any such
Gerrity Letter of Credit,  Gerrity (and any Restricted Subsidiary of Gerrity for
whose  account such Gerrity  Letter of Credit is being issued) shall execute and
deliver to Gerrity  Letter of Credit Issuer,  Gerrity Letter of Credit  Issuer's
customary letter of credit  application.  Each Gerrity Letter of Credit shall be
in form and substance  acceptable to Gerrity Letter of Credit Issuer. No Gerrity
Letter of Credit shall have an expiration date later than the earlier of (i) the
Termination Date, or (ii) one (1) year from the date of issuance.  Upon the date
of issuance of a Gerrity Letter of Credit, Gerrity Letter of Credit Issuer shall
be deemed to have sold to each other  Bank,  and each other Bank shall be deemed
to have unconditionally and irrevocably  purchased from Gerrity Letter of Credit
Issuer, a non recourse participation in the related Gerrity Letter of Credit and
Gerrity Letter of Credit Exposure equal to the amount of such Bank's  Commitment
Percentage of such Gerrity Letter of Credit and Letter of Credit Exposure.  Upon
request of any Bank,  but not less often than  quarterly,  Administrative  Agent
shall  provide  notice  to each  Bank by  telephone,  teletransmission  or telex
setting forth each Gerrity Letter of Credit issued and  outstanding  pursuant to
the terms hereof and specifying the Gerrity Letter of Credit Issuer, beneficiary
and  expiration  date of  each  such  Gerrity  Letter  of  Credit,  each  Bank's
percentage of each such Gerrity Letter of Credit and the actual dollar amount of
each Bank's participation held by the Gerrity Letter of Credit Issuer(s) thereof
for such Bank's  account and risk. If any Gerrity  Letter of Credit is presented
for  payment by the  beneficiary  thereof,  Administrative  Agent shall cause an
Adjusted  Base Rate  Borrowing to be made from each Bank  participating  in such
Gerrity  Letter of Credit and Gerrity  Letter of Credit  Exposure  to  reimburse
Gerrity  Letter of Credit  Issuer for the payment  under the  Gerrity  Letter of
Credit, whether or not Gerrity would then be entitled to a Borrowing pursuant to
the terms hereof,  and each Bank which  participated  in such Gerrity  Letter of
Credit and Gerrity  Letter of Credit  Exposure  shall be  obligated  to lend its
Commitment  Percentage  of such  Adjusted  Base Rate  Borrowing.  At the time of
issuance of each Gerrity Letter of Credit,  Gerrity shall pay to  Administrative
Agent a fee equal to the sum of (i) the greater of (A) $500,  or (B)  one-eighth
of one  percent  (1/8%)  per annum  (based on the face  amount  and term of such
Gerrity Letter of Credit), plus (ii) the greater of (A) $500, or (B) a per annum
percentage equal to the Applicable

                                       28


Margin in effect on the date of issuance of such Gerrity Letter of Credit (based
upon the amount and term of such Gerrity Letter of Credit). Administrative Agent
shall  distribute  the fee described in subclause (i) of the preceding  sentence
paid on  issuance  of such  Gerrity  Letter of Credit to the  Gerrity  Letter of
Credit Issuer of such Gerrity  Letter of Credit.  The remaining  portion of such
fee shall be paid to Banks  participating  in such Gerrity  Letter of Credit and
Gerrity  Letter  of  Credit  Exposure  based on the  relative  amounts  of their
participation  in such  Gerrity  Letter of Credit and  Gerrity  Letter of Credit
Exposure.

     Upon the  occurrence  of an Event of Default,  Gerrity  shall,  on the next
succeeding Domestic Business Day, deposit with  Administrative  Agent such funds
as  Administrative  Agent  may  request,  up to a  maximum  amount  equal to the
aggregate  existing Gerrity Letter of Credit Exposure of all Banks. Any funds so
deposited shall be held by  Administrative  Agent for the ratable benefit of all
Banks as security for the outstanding  Gerrity Letter of Credit Exposure and the
other Gerrity Obligations,  and Gerrity will, in connection  therewith,  execute
and deliver such  security  agreements  in form and  substance  satisfactory  to
Administrative  Agent which it may,  in its  discretion,  require.  As drafts or
demands  for  payment  are  presented   under  any  Gerrity  Letter  of  Credit,
Administrative  Agent shall apply such funds to satisfy  such drafts or demands.
When all Gerrity Letters of Credit have expired and the Gerrity Obligations have
been repaid in full (and the Gerrity Commitment of all Banks have terminated) or
such Event of Default  has been cured to the  satisfaction  of  Required  Banks,
Administrative  Agent shall  release to Gerrity any  remaining  funds  deposited
under this Section 2.3(b).  Whenever  Gerrity is required to make deposits under
this  Section  2.3(b)  and  fails  to do so on the  day  such  deposit  is  due,
Administrative  Agent or any Bank  may,  without  notice to  Gerrity,  make such
deposit  (whether by  application  of proceeds of any collateral for the Gerrity
Obligations,  by  transfers  from  other  accounts  maintained  with any Bank or
otherwise)  using any funds then available to any Bank of any Borrower or any of
their Restricted Subsidiaries, any guarantor, or any other Person liable for all
or any part of the Gerrity Obligations.

     (c) No Bank will be obligated to lend to Gerrity hereunder or incur Gerrity
Letter of Credit Exposure, and Gerrity shall not be entitled to borrow hereunder
or obtain  Gerrity  Letters of Credit  hereunder  (i) during the  existence of a
Borrowing  Base  Deficiency,  or (ii) in an amount which would cause a Borrowing
Base  Deficiency.  Nothing in this Section 2.3(c) below shall be deemed to limit
any Bank's  obligation to fund its  Commitment  Percentage of Adjusted Base Rate
Borrowings  with respect to its  participation  in Gerrity  Letters of Credit in
connection with any Adjusted Base Rate Borrowing made as a result of the drawing
under any Gerrity Letter of Credit.

     (d)  Gerrity  shall not be  permitted  to obtain  Borrowings  hereunder  in
respect of the Gerrity  Refinancing  Reserve  for any purpose  other than (i) to
redeem  Subordinate Notes tendered to Gerrity as a result of the Merger pursuant
to Section 4.18 of the Indenture, (ii) to repurchase or redeem Subordinate Notes
after the  Subordinate  Note  Redemption  Date,  and (iii) to make  payments and
prepayments on the Intercompany Loan.

     SECTION 2.4.  Method of  Borrowing.  (a) In order to request any  Borrowing
hereunder,  the applicable  Borrower(s) shall hand deliver, telex or telecopy to
Administrative  Agent a duly completed  Request for Borrowing (herein so called)
prior to 12:00  noon  (Houston,  Texas  time),  (i) at  least  one (1)  Domestic
Business Day before the Borrowing  Date  specified for a proposed  Adjusted Base
Rate Borrowing,  and (ii) at least three (3) Eurodollar Business Days before the
Borrowing  Date of a  proposed  Eurodollar  Borrowing.  Each  such  Request  for
Borrowing  shall be  substantially  in the form of  Exhibit G hereto,  and shall
specify:


                         (i)  whether  such  Borrowing  is being  made under the
                    Patina Term Loan,  the Patina  Revolving Loan or the Gerrity
                    Loan;

                                       29



                         (ii) whether such  Borrowing is to be an Adjusted  Base
                    Rate Borrowing or a Eurodollar Borrowing;

                         (iii) the Borrowing Date of such Borrowing, which shall
                    be a Domestic  Business Day in the case of an Adjusted  Base
                    Rate Borrowing,  or a Eurodollar Business Day in the case of
                    a Eurodollar Borrowing;
 
                         (iv) the aggregate amount of such Borrowing;

                         (v) in the case of a Eurodollar Borrowing, the duration
                    of the Interest Period  applicable  thereto,  subject to the
                    provisions of the definition of Interest Period; and

                         (vi)  to the  extent  such  Borrowing  is to be used in
                    whole or in part to repurchase or redeem  Subordinate  Notes
                    (A) the  principal  amount  of the  Subordinate  Notes to be
                    repurchased  or  redeemed,  (B) the  closing  date  for such
                    redemption or repurchase  (which shall be the Borrowing Date
                    for the requested  Borrowing),  and (C) a description of the
                    material  terms  and   conditions  of  such   repurchase  or
                    redemption  (or a statement  that such  redemption  is being
                    made as a result of the Merger  pursuant to Section  4.18 of
                    the Indenture, if applicable).

     (b) Upon receipt of a Request for  Borrowings  described in Section  2.4(a)
above,  Administrative  Agent shall  promptly  notify each Bank of the  contents
thereof  and the  amount of the  Borrowing  to be  loaned by such Bank  pursuant
thereto,  and such Request for  Borrowings  shall not thereafter be revocable by
the applicable Borrower(s).

     (c) Not later  than 12:00 noon  (Houston,  Texas  time) on the date of each
Borrowing,  each Bank shall make  available  its  Commitment  Percentage of such
Borrowing,  in Federal or other funds immediately available in Houston, Texas to
Administrative   Agent  at  its   address   set  forth  on  Schedule  1  hereto.
Notwithstanding  the  foregoing,   if  the  applicable  Borrower(s)  deliver  to
Administrative Agent a Request for Borrowing prior to 10:00 a.m. (Houston, Texas
time) on a Domestic  Business Day  requesting an Adjusted Base Rate Borrowing on
such  day,  each  Bank  shall  use  its  best  efforts  to  make   available  to
Administrative  Agent its  Commitment  Percentage of such Borrowing by 1:00 p.m.
(Houston,  Texas time) on the same day. Unless  Administrative  Agent determines
that any applicable  condition  specified in Section 6.2 has not been satisfied,
Administrative Agent will make the funds so received from Banks available to the
applicable Borrower at Administrative Agent's aforesaid address.

     SECTION  2.5.  Method of  Requesting  Letters  of  Credit.  (a) In order to
request any Letter of Credit  hereunder,  the applicable  Borrower(s) shall hand
deliver,  telex or telecopy to Administrative Agent a duly completed Request for
Letter of Credit (herein so called) prior to 12:00 noon (Houston, Texas time) at
least three  Domestic  Business  Days before the date  specified for issuance of
such Letter of Credit. Each Request for Letters of Credit shall be substantially
in the form of Exhibit H hereto,  shall be accompanied by the applicable  Letter
of Credit Issuer's duly completed and executed letter of credit  application and
agreement and shall specify:

                         (i) whether  such  Letter of Credit is being  requested
                    under  the  Gerrity  Commitments  or  the  Patina  Revolving
                    Commitments;

                         (ii) the requested  date for issuance of such Letter of
                    Credit;


                                       30


                         (iii) the  terms of such  requested  Letter of  Credit,
                    including  the  name and  address  of the  beneficiary,  the
                    stated amount,  the expiration date and the conditions under
                    which   drafts  under  such  Letter  of  Credit  are  to  be
                    available; and

                         (iv) the purpose of such Letter of Credit.

                         (b) Upon  receipt  of a  Request  for  Letter of Credit
                    described  in Section  2.5(a)  above,  Administrative  Agent
                    shall promptly  notify each Bank and the proposed  Letter of
                    Credit Issuer of the contents thereof,  including the amount
                    of the  requested  Letter of Credit,  and such  Request  for
                    Letter of Credit  shall not  thereafter  be revocable by the
                    applicable Borrower(s).

     (c) No later than 12:00 noon (Houston,  Texas time) on the date each Letter
of Credit is requested,  unless Administrative Agent or the applicable Letter of
Credit Issuer  determines that any applicable  condition  precedent set forth in
Section  6.2  hereof has not been  satisfied,  the  applicable  Letter of Credit
Issuer will issue and deliver such Letter of Credit pursuant to the instructions
of the applicable Borrower(s).

     SECTION 2.6. Notes.  Each Bank's  Commitment  Percentage of the Patina Term
Loan shall be  evidenced  by a single  Patina Term Note  payable to the order of
such Bank in an amount equal to such Bank's Patina Term Commitment.  Each Bank's
Commitment  Percentage  of the Patina  Revolving  Loan shall be  evidenced  by a
single  Patina  Revolving  Note  payable  to the order of such Bank in an amount
equal  to such  Bank's  Patina  Revolving  Commitment.  Each  Bank's  Commitment
Percentage  of the Gerrity  Loan shall be  evidenced  by a single  Gerrity  Note
payable  to the  order of such Bank in an amount  equal to such  Bank's  Gerrity
Commitment.

     SECTION 2.7.  Interest Rates;  Payments.  (a) The principal  amount of each
Loan  outstanding  from day to day which is the subject of an Adjusted Base Rate
Tranche  shall  bear  interest  at a rate  per  annum  equal  to the  sum of the
Applicable  Margin  plus  the  Adjusted  Base  Rate in  effect  from day to day;
provided  that in no event shall the rate  charged  hereunder or under the Notes
exceed the Maximum Lawful Rate.  Interest on any portion of the principal of any
Loan subject to an Adjusted  Base Rate Tranche shall be payable as it accrues on
the last day of each calendar month.

     (b) The principal  amount of each Loan outstanding from day to day which is
the subject of a Eurodollar  Tranche shall bear interest for the Interest Period
applicable thereto at a rate per annum equal to the sum of the Applicable Margin
plus the applicable  Adjusted  Eurodollar Rate;  provided that in no event shall
the rate charged  hereunder  or under the Notes exceed the Maximum  Lawful Rate.
Interest on any portion of the  principal  of any Loan  subject to a  Eurodollar
Tranche having an Interest  Period of one (1), two (2) or three (3) months shall
be payable on the last day of the Interest Period applicable  thereto.  Interest
on any portion of the  principal  of any Loan  subject to a  Eurodollar  Tranche
having an Interest  Period of six (6) months shall be payable on the last day of
the  Interest  Period  applicable  thereto  and on the last  day of each  Fiscal
Quarter during such Interest Period.

     (c) So long as no Default or Event of Default shall be continuing,  subject
to the  provisions of this Section 2.7,  each Borrower  shall have the option of
having all or any portion of the principal  outstanding under each Loan borrowed
by it be the  subject  of an  Adjusted  Base  Rate  Tranche  or one  (1) or more
Eurodollar Tranches,  which shall bear interest at rates based upon the Adjusted
Base Rate and the Adjusted  Eurodollar Rate,  respectively  (each such option is
referred to herein as an  "Interest  Option");  provided,  that each  Eurodollar
Tranche shall be in a minimum amount of $500,000 and shall be in an amount which
is an integral  multiple  of  $100,000.  Each change in an Interest  Option made
pursuant to this  Section  2.7(c)  shall be deemed both a payment in full of the
portion of the principal of

                                       31


the  applicable  Loan which was the subject of the Adjusted Base Rate Tranche or
Eurodollar   Tranche   from  which  such   change  was  made  and  a   Borrowing
(notwithstanding  that the unpaid principal amount of the applicable Loan is not
changed thereby) of the portion of the principal of the applicable Loan which is
the subject of the Adjusted Base Rate Tranche or  Eurodollar  Tranche into which
such change was made.  Prior to the  termination  of each  Interest  Period with
respect to each Eurodollar  Tranche,  the applicable Borrower shall give written
notice  (a  "Rollover  Notice")  in the form of  Exhibit  I  attached  hereto to
Administrative  Agent of the Interest  Option which shall be  applicable to such
portion of the  principal of the  applicable  Loan upon the  expiration  of such
Interest Period. Such Rollover Notice shall be given to Administrative  Agent at
least  one (1)  Domestic  Business  Day,  in the case of an  Adjusted  Base Rate
Tranche  selection  and three (3)  Eurodollar  Business  Days,  in the case of a
Eurodollar  Tranche  selection,  prior to the termination of the Interest Period
then expiring.  If the applicable  Borrower shall specify a Eurodollar  Tranche,
such Rollover  Notice shall also specify the length of the  succeeding  Interest
Period (subject to the provisions of the definitions of such term),  selected by
such  Borrower.  Each Rollover  Notice shall be  irrevocable  and effective upon
notification  thereof to  Administrative  Agent. If the required Rollover Notice
shall not have been timely  received by  Administrative  Agent,  the  applicable
Borrower  shall be deemed to have elected that the principal of the Loan subject
to the  Interest  Period then  expiring be the subject of an Adjusted  Base Rate
Tranche upon the  expiration of such  Interest  Period and such Borrower will be
deemed to have given  Administrative  Agent notice of such election.  Subject to
the  limitations  set  forth in this  Section  2.7(c) on the  minimum  amount of
Eurodollar Tranches, Borrower shall have the right to convert each Adjusted Base
Rate Tranche to a Eurodollar Tranche by giving  Administrative  Agent a Rollover
Notice of such election at least three (3) Eurodollar Business Days prior to the
date on which Borrower elects to make such conversion (a "Conversion Date"). The
Conversion  Date  selected  by  Borrower  shall be a  Eurodollar  Business  Day.
Notwithstanding  anything in this Section 2.7 to the contrary, no portion of the
principal of a Loan which is the subject of an Adjusted Base Rate Tranche may be
converted to a Eurodollar  Tranche and no Eurodollar Tranche may be continued as
such when any Default or Event of Default has  occurred and is  continuing,  but
each such Tranche  shall be  automatically  converted  to an Adjusted  Base Rate
Tranche on the last day of each applicable  Interest  Period.  In no event shall
more than four (4) Interest Options be in effect with respect to any Loan at any
time.

     (d) Notwithstanding anything to the contrary set forth in Section 2.7(a) or
(b) above, all overdue principal of and, to the extent permitted by law, overdue
interest on any Loan shall bear interest,  payable on demand, for each day until
paid at a rate per annum  equal to the lesser of (a) the sum of (i) two  percent
(2%),  plus (ii) the  Adjusted  Base Rate in effect from day to day, and (b) the
Maximum Lawful Rate.

     (e)  Administrative  Agent shall determine each interest rate applicable to
the  Loans in  accordance  with the terms  hereof.  Administrative  Agent  shall
promptly notify Borrowers and Banks by telex,  telecopy or cable of each rate of
interest so determined, and its determination thereof shall be conclusive in the
absence of manifest error.

     (f)  Notwithstanding  the  foregoing,  if at any time the rate of  interest
calculated  with  reference to the  Adjusted  Base Rate or the  Eurodollar  Rate
hereunder  (the  "contract  rate") is limited to the Maximum  Lawful  Rate,  any
subsequent reductions in the contract rate shall not reduce the rate of interest
on the  affected  Loan below the Maximum  Lawful Rate until the total  amount of
interest  accrued  equals the amount of interest which would have accrued if the
contract  rate had at all times  been in effect.  In the event that at  maturity
(stated or by  acceleration),  or at final payment of any Note, the total amount
of  interest  paid or accrued  on such Note is less than the amount of  interest
which would have  accrued if the  contract  rate had at all times been in effect
with respect  thereto,  then at such time,  to the extent  permitted by law, the
applicable Borrower shall pay to the holder of such Note an amount equal to the

                                       32


difference  between  (i) the lesser of the amount of  interest  which would have
accrued if the  contract  rate had at all times been in effect and the amount of
interest  which would have  accrued if the Maximum  Lawful Rate had at all times
been in effect, and (ii) the amount of interest actually paid on such Note.

     (g) Interest  payable on the  principal of any Loan subject to a Eurodollar
Tranche  shall be computed  based on the number of actual days elapsed  assuming
that each calendar year consisted of 360 days. Interest payable on the principal
of any Loan subject to an Adjusted Base Rate Tranche shall be computed  based on
the number of actual days elapsed and based on the actual  number of days in the
calendar year for which accrued interest is being computed.

     SECTION  2.8.  Mandatory  Prepayments  of Patina  Term  Loan.  A  mandatory
prepayment  of principal of the Patina Term Loan shall be due and payable on the
same day as the date of any prepayment of principal on the Intercompany Loan and
in an amount  identical  to the amount of such  prepayment  of  principal of the
Intercompany Loan.

     SECTION 2.9.  Mandatory  Termination of Commitments;  Termination  Date and
Maturity.  The Patina  Term  Commitments  shall  terminate  on the  Patina  Term
Commitment  Termination  Date. The Gerrity  Commitments and the Patina Revolving
Commitments  shall each  terminate  on the  Termination  Date.  The  outstanding
principal  balance of all Loans, all accrued but unpaid interest thereon and all
other Gerrity  Obligations  and Patina  Obligations  shall be due and payable in
full on the Termination Date.

     SECTION 2.10. Mandatory Reduction of Patina Term Commitments.  In the event
the  Gerrity  Availability  is  increased  pursuant  to  Section  4.8  and  such
Availability  is utilized to repurchase  Subordinate  Notes at any time that the
Patina Term  Commitments are in effect,  the Total Patina Term Commitment  shall
reduce (and the Patina Term  Commitments  of each Bank shall reduce  ratably) on
the date such  Availability  is so utilized by an amount  equal to the amount so
utilized.

     SECTION 2.11.  Voluntary  Reduction of Patina  Commitments.  (a) Patina and
SWAT may, by notice to Administrative  Agent one (1) Domestic Business Day prior
to the effective date of any such reduction, permanently reduce the Total Patina
Term  Commitment  and/or the Total  Patina  Revolving  Commitment  (and  thereby
permanently  reduce  the Patina  Term  Commitment  and/or  the Patina  Revolving
Commitment  of each Bank  ratably  in  accordance  with such  Bank's  Commitment
Percentage)  in  amounts  not less than  $1,000,000  or any larger  multiple  of
$100,000.  On the  effective  date of any such  reduction  in the  Total  Patina
Revolving  Commitment,  Patina and SWAT  shall,  jointly and  severally,  to the
extent required as a result of such reduction,  make a principal  payment on the
Patina  Revolving Loan in an amount  sufficient to cause the Patina  Outstanding
Credit to be equal to or less  than the Total  Patina  Revolving  Commitment  as
thereby  reduced.  Notwithstanding  the foregoing,  Patina and SWAT shall not be
permitted to voluntarily reduce the Total Patina Revolving Commitment (a) if, as
a result of such  reduction,  Patina and SWAT would be required to prepay all or
any portion of the principal amount of any Eurodollar  Tranche prior to the last
day of the Interest Period applicable thereto, or (b) to an amount less than the
aggregate Patina Letter of Credit Exposure of all Banks.

     SECTION 2.12. Voluntary Reduction of Gerrity  Commitments.  (a) Gerrity may
by notice to  Administrative  Agent one (1)  Domestic  Business Day prior to the
effective  date of any such  reduction,  permanently  reduce  the Total  Gerrity
Commitment (and thereby  permanently  reduce the Gerrity Commitment of each Bank
ratably in accordance  with such Bank's  Commitment  Percentage)  in amounts not
less than $1,000,000 or any larger  multiple of $100,000.  On the effective date
of any such reduction, Gerrity shall, to the extent required as a result of such
reduction,  make a principal payment on the Gerrity Loan in an amount sufficient
to cause the  Gerrity  Outstanding  Credit to be equal to or less than the Total
Gerrity Commitment as thereby reduced.  Notwithstanding  the foregoing,  Gerrity
shall not be permitted

                                       33


to voluntarily  reduce the Total Gerrity  Commitment (a) if, as a result of such
reduction,  Gerrity  would be  required  to  prepay  all or any  portion  of the
principal amount of any Eurodollar Tranche prior to the last day of the Interest
Period applicable  thereto,  or (b) to an amount less than the aggregate Gerrity
Letter of Credit Exposure of all Banks.

     SECTION 2.13.  Voluntary  Prepayments of Patina Term Loan.  Patina and SWAT
may, subject to Section 3.3 hereof, by notice to  Administrative  Agent not less
than one (1) Domestic Business Day prior to such prepayment,  voluntarily prepay
the Patina Term Loan in whole or in part at any time without premium or penalty;
provided  that any  partial  prepayment  shall  be in an  amount  not less  than
$1,000,000 or a larger integral multiple of $100,000.

     SECTION 2.14. Application of Payments.  Each repayment pursuant to Sections
2.8, 2.9, 2.10,  2.11,  2.12, 2.13, 4.4, 4.8 and 4.9 shall be made together with
accrued interest to the date of payment,  and shall be applied to payment of the
Loans in accordance with Section 3.2 and the other provisions of this Agreement.

     SECTION 2.15.  Commitment Fees Applicable to Revolvers.  On the Termination
Date and on the last day of each  Fiscal  Quarter  until the  Termination  Date,
commencing on June 30, 1996,  (a) Patina and SWAT shall,  jointly and severally,
pay to Administrative  Agent, for the ratable benefit of each Bank, a commitment
fee equal to the Commitment Fee Percentage (computed on the basis of actual days
elapsed and as if each calendar year consisted of 360 days) of the average daily
Patina Revolving Availability for the Fiscal Quarter (or portion thereof) ending
on such date, and (b) Gerrity shall pay to Administrative Agent, for the ratable
benefit of each Bank, a commitment  fee equal to the  Commitment  Fee Percentage
(computed  on the basis of actual  days  elapsed  and as of each  calendar  year
consisted of 360 days) of the average daily Gerrity  Availability for the Fiscal
Quarter (or portion thereof) ending on such date.

     SECTION 2.16. Commitment Fee Applicable to Patina Term Commitments.  On the
Patina  Term  Commitment  Termination  Date and on the  last day of each  Fiscal
Quarter prior thereto  commencing  June 30, 1996,  Patina and SWAT shall jointly
and severally pay to Agent,  for the ratable  benefit of each Bank, a commitment
fee equal to the Commitment Fee Percentage (computed on the basis of actual days
elapsed and as if each calendar year consisted of 360 days) of the daily average
Patina Term  Availability  for the Fiscal Quarter (or portion thereof) ending on
such date.

     SECTION 2.17.  Additional  Fees Due on Patina Term  Commitment  Termination
Date. In the event the Patina Term Loan is not repaid in full on or prior to the
Patina Term  Commitment  Termination  Date,  then on the Patina Term  Commitment
Termination  Date (a) Patina  and SWAT  shall,  jointly  and  severally,  pay to
Administrative  Agent for the ratable  benefit of each Bank, a fee in the amount
of (i) .375% of the Patina Revolving Commitments in effect on such day, and (ii)
 .375% of the principal  amount of the Patina Term Loan  outstanding on such day,
and (b) Gerrity shall pay to Administrative Agent for the ratable benefit of all
Banks a fee in the amount of .375% of the  Gerrity  Borrowing  Base in effect on
such day.

     SECTION 2.18.  Closing Fee. On the Closing Date,  (a) Patina and SWAT shall
jointly and severally  pay to  Administrative  Agent for the ratable  benefit of
each Bank a closing fee in the amount of $236,250,  and (b) Gerrity shall pay to
Administrative  Agent for the ratable  benefit of each Bank a closing fee in the
amount of $63,750.

     SECTION  2.19.  Patina  Term  Loan  Funding  Fee.  On each  day on  which a
Borrowing is made under the Patina Term Loan,  Patina and SWAT shall jointly and
severally  pay to  Administrative  Agent for the ratable  benefit of each Bank a
funding fee in an amount equal to .125% of the amount of such

                                       34


Borrowing.

     SECTION 2.20.  Agency and Other Fees. Each Borrower shall pay to each Agent
and its  Affiliates  such  fees and  other  amounts  as each  Borrower  shall be
required to pay to such Agent and its  Affiliates  from time to time pursuant to
any  separate  agreement  between  any  Borrower  and  such  Agent or any of its
Affiliates  setting  forth  the  compensation  to be paid to such  Agent and its
Affiliates  in  consideration  for acting as Agent  hereunder  and for providing
other  services  in  connection  with the credit  facilities  provided  pursuant
hereto.  Such fees and other amounts shall be retained by the  applicable  Agent
and its  Affiliates,  and no Bank (other than the applicable  Agents) shall have
any interest therein.


                                   ARTICLE III

                               GENERAL PROVISIONS

     SECTION 3.1.  Delivery and  Endorsement of Notes.  Simultaneously  with the
execution of this Agreement, Administrative Agent shall deliver to each Bank the
Notes payable to such Bank.  Each Bank may endorse (and prior to any transfer of
its  Notes  shall  endorse)  on the  schedule  attached  to  each  of its  Notes
appropriate  notations  to evidence the date and amount of each advance of funds
made by it in respect of any Borrowing,  the Interest Period applicable thereto,
and the date and amount of each payment of principal  received by such Bank with
respect to each Loan;  provided  that the  failure by any Bank to so endorse its
Notes shall not affect the  liability of any  Borrower for the  repayment of all
amounts  outstanding under such Notes together with interest thereon.  Each Bank
is hereby  irrevocably  authorized  by each Borrower to endorse its Notes and to
attach to and make a part of any Note a  continuation  of any such  schedule  as
required.

     SECTION 3.2.  General  Provisions as to Payments.  (a) Each Borrower  shall
make each  payment of principal  of, and interest on, the Loans  payable by such
Borrower and all fees payable by such  Borrower  hereunder  not later than 12:00
noon  (Houston,  Texas  time) on the date when due,  in Federal  or other  funds
immediately available in Houston,  Texas, to Administrative Agent at its address
set forth on Schedule 1 hereto.  Administrative Agent will promptly (and if such
payment is received by  Administrative  Agent by 10:00 a.m.,  and  otherwise  if
reasonably possible,  on the same Domestic Business Day) distribute to each Bank
its Commitment  Percentage of each such payment received by Administrative Agent
for the account of Banks.  Whenever any payment of principal of, or interest on,
that  portion of any Loan  subject to an Adjusted  Base Rate  Tranche or of fees
shall be due on a day which is not a Domestic Business Day, the date for payment
thereof shall be extended to the next succeeding  Domestic Business Day (subject
to the definition of Interest Period).  Whenever any payment of principal of, or
interest on, that portion of any Loan subject to a Eurodollar  Tranche  shall be
due on a day  which is not a  Eurodollar  Business  Day,  the  date for  payment
thereof  shall  be  extended  to the next  succeeding  Eurodollar  Business  Day
(subject to the definition of Interest  Period).  If the date for any payment of
principal is extended by operation of law or otherwise,  interest  thereon shall
be  payable  for  such   extended   time.   Each  Borrower   hereby   authorizes
Administrative  Agent  to  charge  from  time to time  against  such  Borrower's
accounts with Administrative Agent any amount then due by such Borrower.

     (b) Prior to the occurrence of an Event of Default,  all principal payments
received by Banks with  respect to a Loan shall be applied  first to  Eurodollar
Tranches outstanding under such Loan with Interest Periods ending on the date of
such payment,  then to the Adjusted Base Rate  Tranches  outstanding  under such
Loan, and then to Eurodollar Tranches  outstanding under such Loan next maturing
until such principal payment is fully applied.


                                       35


     (c) After the occurrence of an Event of Default,  all amounts  collected or
received  by  Administrative  Agent or any Bank from  Patina and its  Restricted
Subsidiaries  or in  respect  of any  of  the  Assets  of  Patina  or any of its
Restricted  Subsidiaries  shall be  applied  first to the  payment of all proper
costs incurred by Administrative Agent in connection with the collection thereof
(including  reasonable  expenses and  disbursements of counsel to Administrative
Agent),  second  to the  payment  of all  proper  costs  incurred  by  Banks  in
connection  with the  collection  thereof  (including  reasonable  expenses  and
disbursements of counsel to Banks),  third to the  reimbursement of any advances
made  by  Banks  to  effect  performance  of any  unperformed  covenants  of the
Borrowers or any of their Restricted  Subsidiaries under any of the Loan Papers,
fourth to the payment of any unpaid  fees  required  pursuant  to Section  2.20,
fifth to the payment of any unpaid fees  required  pursuant to Sections  2.2(b),
2.3(b),  2.15, 2.16, 2.17, 2.18 and 2.19, sixth, to each Bank for application to
its  Commitment  Percentage  of  the  outstanding  balance  of  the  Loans  then
outstanding  (including  accrued but unpaid interest thereon) in accordance with
their respective Commitment  Percentages,  and seventh to establish the deposits
required by Sections  2.2(b) and 2.3(b) if any. All payments  received by a Bank
after the occurrence of an Event of Default for  application to the principal of
any Loan  pursuant to this  Section  3.2(d) shall be applied by such Bank in the
manner provided in Section 3.2(b).

     (d) After the occurrence of an Event of Default,  all amounts  collected or
received by Administrative Agent or any Bank of Gerrity or any of its Restricted
Subsidiaries  or in respect  of the  assets of Gerrity or any of its  Restricted
Subsidiaries  shall be applied first to the payment of all proper costs incurred
by  Administrative  Agent in connection with the collection  thereof  (including
reasonable  expenses and disbursements of Administrative  Agent),  second to the
payment of all proper costs incurred by Banks in connection  with the collection
thereof (including reasonable expenses and disbursements of Banks), third to the
reimbursement  of any  advances  made by  Banks  to  effect  performance  of any
unperformed covenants of Gerrity or any of its Restricted Subsidiaries under any
of the Loan  Papers,  fourth to the payment of any unpaid  fees with  respect to
which Gerrity is liable  pursuant to Section  2.20,  fifth to the payment of any
unpaid fees required pursuant to Sections 2.3(b), 2.15(b),  2.17(b) and 2.18(b),
sixth, to each Bank for application to its Commitment  Percentage of the balance
of the Gerrity  Loan then  outstanding  (including  accrued but unpaid  interest
thereon),  and seventh,  to establish the deposits required by Section 2.3(b) if
any. All payments received by a Bank after the occurrence of an Event of Default
for  application  to the  principal of the Gerrity Loan pursuant to this Section
2.3(e) shall be applied by such Bank in the manner provided in Section 3.2(b).

     SECTION 3.3. Funding Losses. If any Borrower makes any payment of principal
subject to a Eurodollar  Tranche  (whether  pursuant to Section 2.8, 2.9,  2.10,
2.11,  2.12,  2.13, 4.4, 4.8, 4.9, Article XI or XIII and whether as a voluntary
or mandatory  prepayment  or otherwise) on any day other than the last day of an
Interest  Period  applicable  thereto,  or if any  Borrower  fails to borrow any
Eurodollar Borrowing, after notice has been given to any Bank in accordance with
Section 2.4, such Borrower shall reimburse each Bank on demand for any resulting
loss or expense incurred by it, including (without limitation) any loss incurred
in obtaining,  liquidating or employing deposits from third parties, or any loss
arising from the reemployment of funds at rates lower than the cost to such Bank
of such funds and related costs,  which in the case of the payment or prepayment
prior  to the end of the  Interest  Period  for any  Eurodollar  Tranche,  shall
include the amount, if any, by which (a) the interest which such Bank would have
received,  absent such payment or prepayment for the applicable  Interest Period
exceeds  (b) the  interest  which  such Bank  would  receive  if its  Commitment
Percentage of the amount of such Eurodollar Borrowing,  were deposited,  loaned,
or placed by such Bank in the  interbank  eurodollar  market on the date of such
payment or prepayment for the remainder of the applicable  Interest Period. Such
Bank  shall  promptly  deliver  to  such  Borrower  and  Administrative  Agent a
certificate as to the amount of such loss or expense, which certificate shall be
conclusive in the absence of manifest error.


                                       36


     SECTION 3.4.  Foreign  Lenders,  Participants,  and  Assignees.  Each Bank,
Participant (by accepting a participation  interest under this  Agreement),  and
Assignee (by  executing an  Assignment  and  Assumption  Agreement)  that is not
organized  under the laws of the  United  States of America or one of its states
(a) represents to  Administrative  Agent and each Borrower that (i) no Taxes are
required to be withheld by Administrative  Agent or any Borrower with respect to
any  payments  to be made to it in  respect of the  Obligations  and (ii) it has
furnished  to  Administrative  Agent and each  Borrower  two (2) duly  completed
copies of either U.S.  Internal  Revenue Service Form 4224, Form 1001, Form W-8,
or other form acceptable to  Administrative  Agent that entitles it to exemption
from  U.S.  federal  withholding  Tax on all  interest  payments  under the Loan
Papers, and (b) covenants to (i) provide  Administrative Agent and each Borrower
a new Form 4224, Form 1001, Form W-8, or other form acceptable to Administrative
Agent upon the  expiration or  obsolescence  of any  previously  delivered  form
according to applicable laws and regulations, duly executed and completed by it,
and (ii) comply from time to time with all applicable laws and regulations  with
regard to the withholding Tax exemption.  If any of the foregoing is not true or
the  applicable  forms are not  provided,  then any Borrower and  Administrative
Agent (but without  duplication) may deduct and withhold from interest  payments
under the Loan Papers any United States  federal-income  Tax at the maximum rate
under the Code.


                                   ARTICLE IV

                                 BORROWING BASE

     SECTION 4.1. Reserve and Related Asset Report;  Proposed Borrowing Base. As
soon as  available  and in any event by March 15 and  September  15 of each year
commencing  September  15, 1996,  Borrowers  shall deliver to each Bank a Patina
Reserve Report, Patina Related Asset Report,  Gerrity Reserve Report and Gerrity
Related Asset Report  prepared as of the immediately  preceding  December 31 and
June 30, respectively; provided, that Borrowers shall not be required to deliver
a Patina Related Asset Report or a Gerrity Related Asset Report unless Patina or
Gerrity  intend to request  Administrative  Agent and Banks to take the value of
Patina  Related  Assets or Gerrity  Related  Assets into account for purposes of
establishing   the  Patina   Borrowing  Base  or  Gerrity   Borrowing  Base  (as
applicable).  On or before each April 10 and October 10 of each year, Patina and
SWAT shall notify each Bank of the Patina Borrowing Base Patina and SWAT request
for the period  commencing  on the next  Determination  Date,  and Gerrity shall
notify  each Bank of the  Gerrity  Borrowing  Base and  Gerrity  Borrowing  Base
Ceiling  Gerrity  requests for the period  commencing on the next  Determination
Date.

     SECTION 4.2.  Determination  of Patina Borrowing Base. Based in part on the
Patina Reserve  Reports and Patina Related Asset Reports  delivered  pursuant to
Section 4.1,  Administrative  Agent shall, not later than ten (10) days prior to
each  Determination  Date  commencing  with the  Determination  Date  falling on
November 1, 1996, submit a proposed Patina Borrowing Base to become effective on
such  Determination  Date to Banks for  their  approval.  In the event  Required
Banks, or all Banks in the event of a proposed  increase in the Patina Borrowing
Base,   fail  to  promptly   approve  such  proposed   Patina   Borrowing  Base,
Administrative  Agent shall  propose one or more  alternative  Patina  Borrowing
Bases to Banks and shall  consult  with  Banks  regarding  the  proposed  Patina
Borrowing Base until such time as Required Banks, or all Banks in the event of a
proposed increase in the Patina Borrowing Base,  approve a Patina Borrowing Base
proposed by Administrative  Agent. Promptly upon the approval by Required Banks,
or all Banks in the event of a proposed  increase in the Patina  Borrowing Base,
of the  Patina  Borrowing  Base to become  effective  on a  Determination  Date,
Administrative  Agent shall provide  written notice of the amount of such Patina
Borrowing  Base to  Patina  and  SWAT.  In the  event  Administrative  Agent and
Required Banks,  or all Banks in the event of a proposed  increase in the Patina
Borrowing Base,  fail to approve a Patina  Borrowing Base (and notify Patina and
SWAT of the amount thereof) on or prior

                                       37


to any applicable  Determination Date, the Patina Borrowing Base in effect prior
to such  Determination Date shall remain in effect thereafter until such time as
Administrative Agent and Required Banks, or all Banks in the event of a proposed
increase in the Patina Borrowing Base, approve such Patina Borrowing Base (which
shall  become  effective  immediately  upon  notice  to  Patina  and  SWAT  from
Administrative  Agent setting forth the amount thereof).  Any determination of a
proposed Patina Borrowing Base by Administrative Agent and any decision by Banks
regarding the approval or disapproval of any Patina Borrowing Base shall be made
by  Administrative  Agent and Banks in their sole  discretion in accordance with
their  respective  standards  for oil and gas  loans,  which  may  vary  between
Administrative Agent and Banks and from Bank to Bank. Without limiting the right
of  Administrative  Agent to propose the amount of any Patina  Borrowing Base or
the right of Banks to approve or disapprove such proposed Patina  Borrowing Base
in their  sole  discretion,  Patina  and SWAT each  acknowledge  and agree  that
subject to  Administrative  Agent's and Banks'  consistent  application of their
respective  standards for similar loans,  Administrative Agent and Banks (i) may
make such assumptions  regarding  appropriate existing and projected pricing for
hydrocarbons as they deem  appropriate in their sole  discretion,  (ii) may make
such assumptions  regarding  projected rates and quantities of future production
of  hydrocarbons  from oil and gas properties and Patina Related Assets owned by
Patina and its Restricted  Subsidiaries  as they deem  appropriate in their sole
discretion, (iii) may consider the projected cash requirements of Patina and its
Subsidiaries,  including,  without  limitation,  obligations under the Preferred
Stock and debt  service and lease  obligations  of Patina and its  Subsidiaries,
further including without limitation,  the full amount Patina may be required to
pay in connection  with any redemption or repurchase of the  Subordinate  Notes,
(iv) will not  consider  any asset  other than oil and gas  reserves  and Patina
Related  Assets,  (v) will not  consider any asset owned by an entity other than
Patina  and  its  Restricted   Subsidiaries,   and  (vi)  may  make  such  other
assumptions, considerations and exclusions as each Bank deems appropriate in the
exercise of its sole discretion.

     SECTION 4.3. Special Determination of Patina Borrowing Base. In addition to
the  redeterminations  of the Patina  Borrowing  Base  pursuant to Section  4.2,
Patina,  Administrative  Agent or Required Banks may each request Patina Special
Determinations  of the Patina Borrowing Base from time to time;  provided,  that
Patina shall not request more than two (2) Patina Special  Determinations in any
Fiscal Year. In the event  Administrative Agent or Required Banks request such a
Patina Special Determination, Administrative Agent shall promptly deliver notice
of such request to Patina and Patina shall,  within ten (10) days  following the
date of such  request,  deliver  to Banks a Patina  Related  Asset  Report and a
Patina  Reserve  Report  prepared  as of the  last  day of  the  calendar  month
preceding  the date of such  request.  In the  event  Patina  requests  a Patina
Special  Determination,  Patina shall deliver  written notice of such request to
Banks which shall include (i) a Patina Related Asset Report and a Patina Reserve
Report prepared as of a date not more than thirty (30) days prior to the date of
such  request,  and (ii) the amount of the Patina  Borrowing  Base  requested by
Patina and to become  effective on the  Determination  Date  applicable  to such
Patina  Special  Determination.  Upon receipt of such Patina  Reserve Report and
Patina Related Asset Report,  Administrative Agent shall, subject to approval of
Required Banks,  or all Banks in the event of a proposed  increase in the Patina
Borrowing  Base,  redetermine  the Patina  Borrowing Base in accordance with the
procedure set forth in Section 4.2 which  Borrowing Base shall become  effective
on the Determination Date applicable to such Patina Special Determination (or as
soon thereafter as Administrative  Agent and Required Banks, or all Banks in the
event of a proposed  increase in the Patina Borrowing Base,  approve such Patina
Borrowing Base and provide notice thereof to Patina).

     SECTION 4.4. Patina Borrowing Base  Deficiency.  If a Patina Borrowing Base
Deficiency  exists at any time,  Patina and SWAT  jointly and  severally  shall,
within ninety (90) days following the date such Patina Borrowing Base Deficiency
first occurs, at their option,  either (a) make a prepayment of principal on the
Patina Revolving Loan in an amount sufficient to eliminate such Patina Borrowing
Base  Deficiency,  and if  such  Patina  Borrowing  Base  Deficiency  cannot  be
eliminated by prepaying the Patina

                                       38


Revolving  Loan in full (as a result  of  outstanding  Patina  Letter  of Credit
Exposure),  Patina  and SWAT  jointly  and  severally  shall also  deposit  with
Administrative  Agent  sufficient  funds to be held by  Administrative  Agent as
security  for  outstanding  Patina  Letter  of  Credit  Exposure  in the  manner
contemplated  by Section 2.2(b) as necessary to eliminate such Patina  Borrowing
Base  Deficiency,  (b) submit  additional oil and gas properties owned by Patina
and its  Restricted  Subsidiaries  for  consideration  in  connection  with  the
determination  of the  Patina  Borrowing  Base  which  Administrative  Agent and
Required Banks deem sufficient in their sole discretion to eliminate such Patina
Borrowing Base Deficiency, or (c) take such other action as Administrative Agent
and Required Banks shall deem  appropriate in their sole discretion to eliminate
such Patina Borrowing Base Deficiency.

     SECTION  4.5.  Initial  Patina  Borrowing  Base.  Notwithstanding  anything
contained herein to the contrary, the Patina Borrowing Base in effect during the
period  from the  Closing  Date until the date of the first  Special or Periodic
Determination after the Closing Date shall be the Initial Patina Borrowing Base.

     SECTION 4.6.  Determination of Gerrity Borrowing Base and Gerrity Borrowing
Base Ceiling.  Based in part on the Gerrity  Reserve Reports and Gerrity Related
Asset Reports delivered pursuant to Section 4.1, Administrative Agent shall, not
later than ten (10) days prior to each  Determination  Date  commencing with the
Determination  Date  falling  on  November  1, 1996,  submit a proposed  Gerrity
Borrowing Base and Gerrity  Borrowing  Base Ceiling to become  effective on such
Determination Date to Banks for their approval.  In the event Required Banks, or
all Banks in the event of a proposed  increase in the Gerrity  Borrowing Base or
Gerrity  Borrowing Base Ceiling,  fail to promptly approve such proposed Gerrity
Borrowing Base and Gerrity  Borrowing Base Ceiling,  Administrative  Agent shall
propose one or more alternative  Gerrity  Borrowing Bases and Gerrity  Borrowing
Base  Ceilings to Banks and shall  consult  with Banks  regarding  the  proposed
Gerrity  Borrowing  Base and Gerrity  Borrowing  Base Ceiling until such time as
Required  Banks,  or all of Banks in the  event of a  proposed  increase  in the
Gerrity  Borrowing  Base or Gerrity  Borrowing  Base Ceiling,  approve a Gerrity
Borrowing  Base and Gerrity  Borrowing Base Ceiling  proposed by  Administrative
Agent.  Promptly upon the approval by Required  Banks, or all Banks in the event
of a proposed  increase in the Gerrity  Borrowing Base or Gerrity Borrowing Base
Ceiling,  of the Gerrity  Borrowing  Base and Gerrity  Borrowing Base Ceiling to
become  effective on a Determination  Date,  Administrative  Agent shall provide
written  notice  of the  amount  of such  Gerrity  Borrowing  Base  and  Gerrity
Borrowing  Base  Ceiling  to  Gerrity.  In the  event  Administrative  Agent and
Required Banks, or all Banks in the event of a proposed  increase in the Gerrity
Borrowing  Base or Gerrity  Borrowing  Base  Ceiling,  fail to approve a Gerrity
Borrowing  Base and Gerrity  Borrowing  Base Ceiling (and notify  Gerrity of the
amount  thereof) on or prior to any applicable  Determination  Date, the Gerrity
Borrowing Base or Gerrity Borrowing Base Ceiling (as applicable) in effect prior
to such  Determination Date shall remain in effect thereafter until such time as
Administrative Agent and Required Banks, or all Banks in the event of a proposed
increase  in the  Gerrity  Borrowing  Base or Gerrity  Borrowing  Base  Ceiling,
approve such Gerrity  Borrowing  Base and Gerrity  Borrowing Base Ceiling (which
shall become effective  immediately  upon notice to Gerrity from  Administrative
Agent setting forth the amount thereof). Any determination of a proposed Gerrity
Borrowing Base or Gerrity Borrowing Base Ceiling by Administrative Agent and any
decision by Banks regarding the approval or disapproval of any Gerrity Borrowing
Base or Gerrity Borrowing Base Ceiling shall be made by Administrative Agent and
Banks in their sole discretion in accordance with their respective standards for
oil and gas loans,  which may vary  between  Administrative  Agent and Banks and
from Bank to Bank. Without limiting the right of Administrative Agent to propose
the amount of any Gerrity  Borrowing  Base or Gerrity  Borrowing Base Ceiling or
the right of Banks to approve or disapprove such proposed Gerrity Borrowing Base
or Gerrity Borrowing Base Ceiling in their sole discretion, Gerrity acknowledges
and  agrees  that  subject  to  Administrative  Agent's  and  Banks'  consistent
application  of their  respective  standards for similar  loans,  Administrative
Agent and Banks (i) may make such assumptions regarding appropriate existing and
projected pricing for hydrocarbons as they

                                       39


deem  appropriate  in their  sole  discretion,  (ii) may make  such  assumptions
regarding  projected  rates and quantities of future  production of hydrocarbons
from oil and gas properties  owned by Gerrity and Gerrity Related Assets as they
deem appropriate in their sole discretion, (iii) may consider the projected cash
requirements  of Gerrity and its  Subsidiaries  including,  without  limitation,
obligations  under  the  Subordinate  Notes  and other  debt  service  and lease
obligations of Gerrity and its Subsidiaries,  including, without limitation, the
full amount Gerrity may be required to pay in connection  with any redemption of
the Subordinate  Notes,  (iv) will not consider any asset other than oil and gas
reserves owned by Gerrity and Gerrity Related Assets,  (v) will not consider any
asset owned by an entity other than Gerrity,  (vi) will not consider any oil and
gas  reserves  or Gerrity  Related  Assets  which are not subject to a first and
prior Lien in favor of Administrative Agent for the ratable benefit of the Banks
to  the  extent  required  by  Section  5.1,  and  (vii)  may  make  such  other
assumptions, considerations and exclusions as each Bank deems appropriate in the
exercise of its sole discretion.

     SECTION 4.7. Special  Determination  of Gerrity  Borrowing Base and Gerrity
Borrowing  Base  Ceiling.  In  addition to the  redeterminations  of the Gerrity
Borrowing  Base and Gerrity  Borrowing  Base  Ceiling  pursuant to Section  4.6,
Gerrity, Administrative Agent or Required Banks may each request Gerrity Special
Determinations  of the Gerrity Borrowing Base and Gerrity Borrowing Base Ceiling
from time to time;  provided,  that Gerrity  shall not request more than two (2)
Gerrity Special  Determinations in any Fiscal Year. In the event  Administrative
Agent  or  Required  Banks  request  such  a  Gerrity   Special   Determination,
Administrative  Agent shall  promptly  deliver notice of such request to Gerrity
and Gerrity  shall,  within ten (10) days  following  the date of such  request,
deliver to Banks a Gerrity  Related  Asset Report and a Gerrity  Reserve  Report
prepared as of the last day of the  calendar  month  preceding  the date of such
request. In the event Gerrity requests a Gerrity Special Determination,  Gerrity
shall deliver  written notice of such request to Banks which shall include (i) a
Gerrity  Related Asset Report and a Gerrity Reserve Report prepared as of a date
not more than thirty (30) days prior to the date of such  request,  and (ii) the
amount  of the  Gerrity  Borrowing  Base  and  Gerrity  Borrowing  Base  Ceiling
requested by Gerrity to become effective on the Determination Date applicable to
such Gerrity Special Determination.  Upon receipt of such Gerrity Reserve Report
and  Gerrity  Related  Asset  Report,  Administrative  Agent  shall,  subject to
approval of Required Banks, or all Banks in the event of a proposed  increase in
the Gerrity  Borrowing Base,  redetermine the Gerrity Borrowing Base and Gerrity
Borrowing Base Ceiling in accordance with the procedure set forth in Section 4.6
which Gerrity  Borrowing  Base and Gerrity  Borrowing  Base Ceiling shall become
effective  on  the  Determination   Date  applicable  to  such  Gerrity  Special
Determination (or as soon thereafter as Administrative Agent and Required Banks,
or all Banks in the event of a proposed  increase in the Gerrity  Borrowing Base
and Gerrity  Borrowing  Base Ceiling,  approve such Gerrity  Borrowing  Base and
Gerrity Borrowing Base Ceiling and provide notice thereof to Gerrity).

     SECTION 4.8.  Readjustment  of Gerrity  Borrowing  Base. In addition to the
redeterminations  of the Gerrity Borrowing Base pursuant to Sections 4.6 and 4.7
hereof,  the Gerrity  Borrowing  Base shall  automatically  be adjusted upon the
delivery  by  Gerrity  to  Administrative  Agent of a Gerrity  Debt  Restriction
Certificate  certifying  that,  pursuant  to Section  4.03(a) of the  Indenture,
Gerrity is permitted to borrow under the Total  Gerrity  Commitment an amount in
excess of the Gerrity  Borrowing Base then in effect (and  certifying as to such
increased   amount).   Upon  the  delivery  of  such  Gerrity  Debt  Restriction
Certificate  certifying as to such increase, the Gerrity Borrowing Base shall be
automatically  increased  by an amount  equal to the amount of the  increase set
forth in such Gerrity Debt Restriction Certificate, but in no event to an amount
greater  than the  Gerrity  Borrowing  Base  Ceiling  then in  effect.  Upon any
increase in the Gerrity  Borrowing  Base  pursuant to this  Section  4.8, to the
extent  such  increase  occurs  prior  to the  termination  of the  Patina  Term
Commitments  and  prior  to  payment  in  full  of the  Patina  Term  Loan,  the
corresponding  increase in the Gerrity  Availability  as a result  thereof shall
become a part of the  Gerrity  Refinancing  Reserve  and  shall be  utilized  by
Gerrity only for the purposes permitted in the

                                       40


definition  of Gerrity  Refinancing  Reserve  and  Section  2.1 (so long as such
reserve is required to be maintained).

     SECTION 4.9. Gerrity Borrowing Base Deficiency. If a Gerrity Borrowing Base
Deficiency exists at any time, Gerrity shall,  within ninety (90) days following
the date such Gerrity  Borrowing Base  Deficiency  first occurs,  at its option,
either (a) make a  prepayment  of  principal  on the  Gerrity  Loan in an amount
sufficient to eliminate  such Gerrity  Borrowing  Base  Deficiency,  and if such
Gerrity  Borrowing Base Deficiency cannot be eliminated by prepaying the Gerrity
Loan in full (as a result of  outstanding  Gerrity  Letter of Credit  Exposure),
Gerrity shall also deposit with Administrative Agent sufficient funds to be held
by  Administrative  Agent as security for  outstanding  Gerrity Letter of Credit
Exposure in the manner  contemplated by Section 2.3(b) as necessary to eliminate
such  Gerrity  Borrowing  Base  Deficiency,  (b) submit  additional  oil and gas
properties owned by Gerrity and its Restricted Subsidiaries for consideration in
connection  with  the   determination  of  the  Gerrity   Borrowing  Base  which
Administrative Agent and Required Banks deem sufficient in their sole discretion
to eliminate  such Gerrity  Borrowing  Base  Deficiency,  or (c) take such other
action as  Administrative  Agent and Required  Banks shall deem  appropriate  in
their sole discretion to eliminate such Gerrity Borrowing Base Deficiency.

     SECTION 4.10.  Initial  Gerrity  Borrowing Base.  Notwithstanding  anything
contained herein to the contrary,  the Gerrity Borrowing Base in effect from and
after the  Closing  Date and  continuing  until the  Gerrity  Borrowing  Base is
redetermined  or readjusted  pursuant to Sections 4.7 or 4.8 hereof shall be the
Initial Gerrity Borrowing Base.

     SECTION  4.11.  Certain  Agreements  Regarding  November  1, 1996  Periodic
Determination.  Subject  to the  right  of  Administrative  Agent  in  its  sole
discretion  (with  approval  of  Required  Banks in their  sole  discretion)  to
establish a higher or lower Patina  Borrowing Base and a higher or lower Gerrity
Borrowing   Base  Ceiling  at  the  time  of  the  November  1,  1996   Periodic
Determination,  it is anticipated that the Patina Borrowing Base and the Gerrity
Borrowing Base Ceiling established in connection with such Special Determination
will not exceed, on a combined basis, the remainder of (a)  $215,000,000,  minus
(b) a percentage of the principal  balance of Subordinate Notes then outstanding
determined in accordance  with the table set forth in the definition of "Gerrity
Borrowing Base Ceiling" herein contained.


                                    ARTICLE V

                            COLLATERAL AND GUARANTEES

     SECTION 5.1.  Security.  (a) The Obligations  shall be secured by first and
prior Liens (subject only to Permitted Encumbrances) encumbering (i) one hundred
percent  (100%) of the issued and  outstanding  capital  stock of every class of
each  Restricted  Subsidiary of Patina,  (ii) one hundred  percent (100%) of the
issued and outstanding capital stock of Gerrity (excluding the shares of Gerrity
Preferred  Stock  outstanding  after  the  Merger  which are not  exchanged  for
Preferred  Stock pursuant to the Exchange Offer  contemplated by Section 7.26 of
the  Merger   Agreement),   and  (iii)  the  Intercompany  Loan  and  the  other
Intercompany Loan Documents.  On or before the Closing Date Patina shall execute
and deliver to Administrative Agent the Patina Pledge Agreement,  and Patina and
SWAT shall execute and deliver to Administrative Agent the Collateral Assignment
of Intercompany Loan.

     (b) In the event the Patina  Term Loan is not paid in full on or before the
Patina  Term  Commitment  Termination  Date,  the  Obligations  shall be further
secured  by first and  prior  Liens  (subject  only to  Permitted  Encumbrances)
encumbering  proved oil and gas  properties  owned by Patina and its  Restricted
Subsidiaries  designated  by  Administrative  Agent and  Required  Banks  with a
Recognized Value

                                       41


at least equal to eighty percent (80%) of the aggregate  Recognized Value of all
proved oil and gas properties  owned by Patina and its Restricted  Subsidiaries.
Not later than the fifth (5th)  Domestic  Business Day following the Patina Term
Commitment  Termination Date and provided that the Patina Term Loan has not been
paid in full, Patina shall, and shall cause each of its Restricted  Subsidiaries
to, execute and deliver to Administrative  Agent for the ratable benefit of each
Bank,  Mortgages in form and  substance  acceptable to  Administrative  Agent to
grant, evidence and perfect the Liens required by this Section 5.1(b).

     (c) The  Gerrity  Obligations  shall be  secured  by first and prior  Liens
(subject only to Permitted Encumbrances) covering (i) all oil and gas properties
owned by Gerrity (other than certain oil and gas properties  owned by Gerrity in
Uintah County and Duchesne County,  Utah),  including,  without limitation,  the
Gerrity  Production  Payment,  as  such  term  is  defined  in  the  Tax  Credit
Transaction  Agreement,  (ii) all Gerrity  Related Assets (to the extent Gerrity
has  requested  that the value of such  Related  Assets be taken into account by
Administrative Agent and Required Banks for purposes of establishing the Gerrity
Borrowing  Base),  and (iii) the issued and  outstanding  capital stock of every
class of each  Restricted  Subsidiary of Gerrity.  On the Closing Date,  Gerrity
shall deliver to  Administrative  Agent for the ratable benefit of each Bank the
Assignment  and  Amendment to Mortgages  duly  executed and delivered by Bank of
Montreal as the Agent under the Existing Gerrity Credit Agreement and such other
assignments,  conveyances, amendments, agreements and other writings, including,
without  limitation,  UCC-3 amendments and assignments (each duly authorized and
executed) as Administrative  Agent shall deem necessary or appropriate to assign
and  convey the  Existing  Gerrity  Mortgages  to  Administrative  Agent for the
benefit of each Bank and to confirm,  evidence and perfect the Liens  created by
the Existing Gerrity Mortgages in favor of Administrative  Agent for the ratable
benefit of the Banks.

     (d) On or  before  each  Determination  Date  and at such  other  times  as
Administrative  Agent or Required Banks shall request,  to the extent the Patina
Obligations  are required to be secured at that time pursuant to Section  5.1(b)
Patina shall,  and shall cause each of its Restricted  Subsidiaries  to, execute
and deliver to Administrative Agent for the ratable benefit of Banks,  Mortgages
in form and substance acceptable to Administrative Agent to grant,  evidence and
perfect  the Liens  required  by  Section  5.1(b)  with  respect  to oil and gas
properties acquired by Patina and its Restricted  Subsidiaries subsequent to the
last date on which  Patina and its  Restricted  Subsidiaries  were  required  to
execute and deliver Mortgages  pursuant to this Section 5.1(d) or Section 5.1(b)
or which,  for any other  reason,  were not the  subject of valid,  enforceable,
perfected first and prior Liens in favor of Administrative Agent for the ratable
benefit of Banks.

     (e) On or  before  each  Determination  Date  and at such  other  times  as
Administrative Agent or Required Banks shall request,  Gerrity shall execute and
deliver to Administrative Agent, for the ratable benefit of each Bank, Mortgages
in form and substance acceptable to Administrative Agent to grant,  evidence and
perfect the Liens required by Section  5.1(c)  preceding with respect to oil and
gas properties and Gerrity Related Assets acquired by Gerrity  subsequent to the
last date on which  Gerrity  was  required  to  execute  and  deliver  Mortgages
pursuant to this Section  5.1(e) (or  subsequent to the Closing Date in the case
of the first request  pursuant to this Section  5.1(e)) or which,  for any other
reason are not the subject of valid, enforceable, perfected first priority Liens
(subject only to Permitted  Encumbrances) in favor of  Administrative  Agent for
the ratable benefit of Banks.

     (f) At any time any  Borrower  or any of its  Restricted  Subsidiaries  are
required to execute and deliver  Mortgages to  Administrative  Agent pursuant to
this Section 5.1, such Borrower shall also deliver to Administrative  Agent such
opinions of counsel  (addressed to  Administrative  Agent) and other evidence of
title as Administrative  Agent shall deem necessary or appropriate to verify (i)
such  Borrower's  or its  Restricted  Subsidiaries'  title  to the  oil  and gas
properties and Related Assets subject to such

                                       42


Mortgages,  and (ii) the  perfection  and priority of the Liens  created by such
Mortgages.

     SECTION 5.2. Guarantees. Payment and performance of the Gerrity Obligations
shall be fully guaranteed by Patina and SWAT pursuant to two (2) separate Patina
Guarantees duly authorized and executed by Patina and SWAT.


                                   ARTICLE VI

                            CONDITIONS TO BORROWINGS

     SECTION 6.1.  Conditions to Initial Extension of Credit.  The obligation of
each  Bank to loan its  Commitment  Percentage  of the  initial  Borrowing  made
hereunder, and the obligation of Administrative Agent to issue (or cause another
Bank to issue) the initial Letters of Credit issued  hereunder is subject to the
satisfaction of each of the following conditions:

     (a) Closing  Deliveries.  Administrative  Agent shall have received each of
the following documents,  instruments and agreements,  each of which shall be in
form and substance and executed in such  counterparts  as shall be acceptable to
Administrative  Agent  and  Required  Banks  and  each of  which  shall,  unless
otherwise indicated, be dated the Closing Date:

                         (i) a Patina Term Note, a Patina  Revolving  Note and a
                    Gerrity Note payable to the order of each Bank in the amount
                    of such Bank's Commitment,  duly executed by each applicable
                    Borrower;

                         (ii) the Intercompany Loan Agreement,  duly executed by
                    Gerrity, Patina and SWAT;

                         (iii) the Collateral  Assignment of  Intercompany  Loan
                    duly executed and delivered by Patina and SWAT;

                         (iv) the Promissory  Note  evidencing the  Intercompany
                    Loan duly  executed by Gerrity  and duly  endorsed by Patina
                    and SWAT to Administrative  Agent for the ratable benefit of
                    Banks;

                         (v) the Patina  Guarantees  duly executed by Patina and
                    SWAT, respectively;

                         (vi) [intentionally deleted];

                         (vii) the Patina  Pledge  Agreement  duly  executed  by
                    Patina  together with (A)  certificates  evidencing  (1) one
                    hundred percent of the issued and outstanding  capital stock
                    of SWAT of every class,  and (2) the issued and  outstanding
                    capital  stock of Gerrity  of every  class  (other  than the
                    shares of  Gerrity  Preferred  Stock  which  either  (a) are
                    delivered  to  Society   National  Bank  as  Exchange  Agent
                    pursuant to the  Exchange  Agent  Agreement  pursuant to the
                    Exchange  Offer made  pursuant to Section 7.26 of the Merger
                    Agreement,  or  (b)  are  not  exchanged  pursuant  to  such
                    Exchange Offer) (all certificates delivered pursuant to this
                    Section 6.1(a)(vii) shall be duly endorsed or accompanied by
                    duly  executed  blank  stock  powers),   and  (B)  shall  be
                    accompanied by such financing  statements executed by Patina
                    as  Administrative  Agent shall request to perfect the Liens
                    granted pursuant to such Patina Pledge Agreement;


                                       43


                         (viii) a Federal  Reserve  Form U-1  Purpose  Statement
                    duly executed by Patina;

                         (ix) the  Gerrity  Pledge  Agreement  duly  executed by
                    Gerrity together with (A) the certificate(s)  evidencing one
                    hundred percent of the issued and outstanding  capital stock
                    of each Restricted Subsidiary of Gerrity of every class (all
                    certificates  delivered  pursuant to this Section 6.1(a)(ix)
                    shall be duly endorsed or accompanied by duly executed blank
                    stock  powers),   and  (B)  shall  be  accompanied  by  such
                    financing  statements  executed by Gerrity as Administrative
                    Agent  shall  request  to  evidence  and  perfect  the Liens
                    granted pursuant to such Gerrity Pledge Agreement;

                         (x) the  Assignment of and Amendment to Mortgages  duly
                    executed and delivered by Gerrity, Bank of Montreal as agent
                    for  the  banks  parties  to  the  Existing  Gerrity  Credit
                    Agreement together with such other assignments, conveyances,
                    amendments,   agreements  and  other  writings,   including,
                    without  limitation,  UCC-3 amendments and  assignments,  in
                    form and substance  satisfactory to Administrative Agent, to
                    properly  assign  and  convey  to  Administrative  Agent the
                    Existing  Gerrity  Mortgages  securing the Existing  Gerrity
                    Credit Agreement;

                         (xi) a Certificate of Ownership Interests substantially
                    in the form of Exhibit J-1,  duly  executed and delivered by
                    an Authorized Officer of Patina;

                         (xii)   a    Certificate    of   Ownership    Interests
                    substantially  in the form of Exhibit J-2, duly executed and
                    delivered by an authorized officer of Gerrity;

                         (xiii) an  opinion of Vinson & Elkins  L.L.P.,  special
                    counsel  for  Patina and SWAT,  favorably  opining as to the
                    enforceability  of  each of the  Loan  Papers  executed  and
                    delivered  by the  Borrowers  and to such  other  matters as
                    Administrative Agent or Required Banks may request;

                         (xiv) an opinion of Keith  Crouch,  Vice  President and
                    Corporate  Counsel for  Gerrity,  and an opinion of Peter E.
                    Lorenzen,  Vice President,  General Counsel and Secretary of
                    SOCO,   each  favorably   opining  as  to  such  matters  as
                    Administrative Agent or Required Banks may request;

                         (xv) opinion of Pendleton  Friedberg Wilson Hennessey &
                    Meyer, P.C.,  special counsel to Gerrity,  opining as to (i)
                    the  validity  and  enforceability  of  the  Assignment  and
                    Amendment to Mortgages under the laws of such  jurisdiction,
                    (ii) the  validity,  enforceability  and  perfection  of the
                    Liens granted  pursuant to each such Mortgage,  and (iii) to
                    such other matters as Administrative Agent or Required Banks
                    may request;

                         (xvi) an opinion of  Gardere & Wynne,  L.L.P.,  special
                    counsel  to  Administrative  Agent,  in form  and  substance
                    satisfactory to Administrative Agent;

                         (xvii) Certificates  executed by Authorized Officers of
                    each  Borrower  stating  that  (A) the  representations  and
                    warranties of each Borrower  contained in this Agreement and
                    the other Loan Papers are true and correct in all  respects,
                    (B) no  Default or Event of Default  has  occurred  which is
                    continuing, and (C) all conditions set forth in this Section
                    6.1 and Section 6.2 have been satisfied;

                         (xviii)  such   resolutions,   certificates  and  other
                    documents relating to the existence of the

                                       44


                    Companies,   the  corporate  authority  for  the  execution,
                    delivery and performance of this Agreement,  the Notes,  the
                    other Loan Papers, the Closing Documents,  and certain other
                    matters relevant hereto, in form and substance  satisfactory
                    to Administrative Agent, which resolutions, certificates and
                    documents  include  resolutions  of the directors of each of
                    the  Companies  authorizing  the  execution,   delivery  and
                    performance   of  the  Loan  Papers  and   certificates   of
                    incumbency for each Company;

                         (xix) a Certificate  executed by an Authorized  Officer
                    of Patina and Gerrity, respectively, confirming that subject
                    only to the  disbursement  of the  proceeds  of the  initial
                    Borrowing, the Closing Transactions have been consummated;

                         (xx) a copy of each Closing  Document,  together with a
                    certificate  executed by an Authorized Officer of Patina and
                    Gerrity,  respectively,  certifying  that  such  copies  are
                    accurate   and   complete   and   represent   the   complete
                    understanding  and  agreement of the parties with respect to
                    the subject matter thereof;

                         (xxi) a report or  reports  in form,  scope and  detail
                    acceptable  to  Administrative   Agent  from   environmental
                    engineering firms acceptable to Administrative Agent setting
                    forth the  results  of Phase I  environmental  review of the
                    Companies' properties and an environmental  compliance audit
                    of  the  Companies'  operations,  which  reports  shall  not
                    reflect the existence of facts or circumstances  which would
                    constitute   a   material   violation   of  any   Applicable
                    Environmental Law or which is likely to result in a material
                    liability to any Company;

                         (xxii)  Certificates  from  the  Borrowers'   insurance
                    broker  setting  forth  the  insurance   maintained  by  the
                    Borrowers'  and  their   Subsidiaries,   stating  that  such
                    insurance is in full force and effect, that all premiums due
                    have been paid and stating  that such  insurance is adequate
                    and complies with the requirements of Section 8.6; and

                         (xxiii)  a  copy  of  a  notice  from  Gerrity  to  the
                    Indenture  Trustee  delivered  pursuant to the definition of
                    "Bank  Credit   Agreement"   contained   in  the   Indenture
                    specifying   that  this   Agreement   is  the  "Bank  Credit
                    Agreement"  as  defined  in  the  Indenture,  together  with
                    evidence  that  such  notice  has  been   delivered  to  the
                    Indenture Trustee.

     (b) Closing  Transactions.  Subject only to disbursement and application of
the  initial  Borrowing,  the  Closing  Transactions  shall  have  occurred  (or
Administrative  Agent  shall be  satisfied  that such  transactions  will  occur
simultaneously therewith). Without limiting the foregoing, each of the following
shall have occurred (or Administrative Agent shall be satisfied that each of the
following shall occur simultaneously therewith):

                         (i) SOCO  shall have  contributed  SOCO  Wattenberg  to
                    Patina;

                         (ii)  Patina  shall  have  assumed  and  paid  in  full
                    $75,000,000  of Debt of SOCO  assumed by Patina  pursuant to
                    the Merger Agreement;

                         (iii) the Existing  Gerrity Credit Agreement shall have
                    been terminated,  all obligations thereunder shall have been
                    refinanced  with the proceeds of the initial  Borrowing made
                    under the Gerrity  Loan and all Liens  securing  payment and
                    performance of such obligations  shall have been assigned to
                    Administrative  Agent  pursuant  to  the  Assignment  of and
                    Amendment to Mortgages; and

                                       45



                         (iv) the Merger shall have been  completed  pursuant to
                    the terms of the Merger Agreement,  and pursuant thereto (A)
                    the certificate of merger contemplated by Section 1.2 of the
                    Merger  Agreement  shall  have  been  duly  filed  with  the
                    Secretary of State of Delaware,  and (B) one hundred percent
                    (100%)  of the  issued  and  outstanding  capital  stock  of
                    Gerrity of every  class shall be owned  beneficially  and of
                    record by Patina  other  than  shares of  Gerrity  Preferred
                    Stock which are not exchanged for Preferred  Stock  pursuant
                    to Section 7.26 of the Merger Agreement.

     (c) Title Review.  Administrative Agent or its counsel shall have completed
a review of title to the oil and gas properties owned by each Borrower and their
Restricted Subsidiaries as Administrative Agent or Required Banks shall require,
and such review shall not have  revealed any  condition  or  circumstance  which
would reflect that the representations  and warranties  contained in Section 7.9
hereof are inaccurate in any respect.

     (d) No Material  Adverse  Change.  In the sole  discretion of each Bank, no
material  adverse  change  shall  have  occurred  in  the  assets,  liabilities,
financial condition or prospects of any of the Companies.

     (e) No Legal Prohibition.  The transactions  contemplated by this Agreement
and the other  Closing  Transactions  shall be permitted by  applicable  law and
regulation and shall not subject Agents, any Bank, SOCO Wattenberg, Borrowers or
any of their  respective  Subsidiaries  to any material  adverse change in their
assets, liabilities, financial condition or prospects.

     (f) No Litigation.  Except as disclosed in the Registration  Statement,  no
litigation,  arbitration or similar proceeding shall be pending which calls into
question  the  validity  or  enforceability  of this  Agreement,  the other Loan
Papers, the Closing Documents or the Closing Transactions.

     (g) Other Matters.  All matters related to this  Agreement,  the other Loan
Papers, the Closing Documents,  SOCO Wattenberg,  Borrowers and their respective
Subsidiaries and the Closing  Transactions shall be acceptable to Administrative
Agent and each Bank in their sole discretion, and Borrowers shall have delivered
to  Administrative  Agent and each Bank such  evidence as they shall  request to
substantiate any matters related to this Agreement,  the other Loan Papers,  the
Closing Documents, SOCO Wattenberg,  Borrowers their respective Subsidiaries and
the Closing Transactions as Administrative Agent or any Bank shall request.

     (h) Closing Fees. Borrowers shall have paid to Administrative Agent for the
ratable benefit of each Bank the fees to be paid on the Closing Date pursuant to
Section  2.18 and to each  Agent any fees  payable  to such  Agent  pursuant  to
Section 2.20.

     SECTION 6.2.  Conditions to each  Borrowing and each Letter of Credit.  The
obligation of each Bank to loan its Commitment  Percentage of each Borrowing and
the obligation of any Patina Letter of Credit Issuer or Gerrity Letter of Credit
Issuer to issue  Letters  of  Credit  on the date any  Letter of Credit is to be
issued is subject to the further satisfaction of the following conditions:

          (a) timely receipt by Administrative Agent of a Request for Borrowings
     or Request for Letter(s) of Credit;

          (b)  immediately  before and after giving effect to such  Borrowing or
     issuance of such Letter(s) of Credit,  no Default or Event of Default shall
     have occurred and be continuing and neither such Borrowing nor the issuance
     of such Letter(s) of Credit shall cause a Default or Event of Default;

                                       46



          (c) the  representations  and warranties of each Borrower contained in
     this  Agreement  shall  be true and  correct  on and as of the date of such
     Borrowing or the issuance of such Letter of Credit;

          (d) the funding of such Borrowing or the issuance of such Letter(s) of
     Credit and all other Borrowings to be made and/or Letter(s) of Credit to be
     issued  on the same day  under  this  Agreement,  shall  not cause a Patina
     Borrowing Base Deficiency or a Gerrity Borrowing Base Deficiency;

          (e)  following  the  issuance  of any  Patina  Letter of  Credit,  the
     aggregate Patina Letter of Credit Exposure shall not exceed $10,000,000;

          (f)  following  the  issuance  of any  Gerrity  Letter of Credit,  the
     aggregate  Patina Letter of Credit  Exposure shall not exceed  $10,000,000;
     and

          (g) to the extent such  Borrowing  is to be made under the Patina Term
     Commitments,  Administrative  Agent  shall have  received  the  funding fee
     related to such Borrowing required by Section 2.9 hereof.

          Each  Borrowing  and the  issuance of each Letter of Credit  hereunder
     shall constitute a representation and warranty by each Borrower that on the
     date of such  Borrowing or issuance of such Letter of Credit the statements
     contained in subclauses (b), (c), (d), (e) and (f) above are true.

     SECTION  6.3.  Additional  Conditions  to the initial  Borrowing  under the
Patina Term  Commitments.  The  obligation  of each Bank to loan its  Commitment
Percentage of the initial  Borrowing  under the Total Patina Term  Commitment is
subject to the further condition that  Administrative  Agent shall have received
(a)  the  Fairness  Opinion,   and  (b)  the  Intercompany  Loan   Effectiveness
Certificate.


                                   ARTICLE VII

                         REPRESENTATIONS AND WARRANTIES

     Each Borrower  jointly and severally  represents  and warrants that each of
the following  statements  is true and correct on the date hereof,  will be true
and correct on the Closing Date (before and  immediately  after giving effect to
the Closing  Transactions)  and will be true and correct on the occasion of each
Borrowing and the issuance of each Letter of Credit:

     SECTION  7.1.  Corporate  Existence  and  Power.  Each  Borrower  (a)  is a
corporation duly  incorporated,  validly existing and in good standing under the
laws of the State of  Delaware,  (b) has all  corporate  power and all  material
governmental licenses, authorizations,  consents and approvals required to carry
on its  businesses as now conducted and as proposed to be conducted,  and (c) is
duly qualified to transact business as foreign  corporation in each jurisdiction
where a failure to be so qualified  could have a material  adverse effect on its
financial condition or operations.

     SECTION 7.2. Existence and Power (Other Companies). Each Company other than
each Borrower (a) is a  corporation,  limited  liability  company or partnership
duly  incorporated or organized (as  applicable),  validly  existing and in good
standing  under  the laws of its  state of  incorporation  or  organization  (as
applicable),  (b) has all corporate,  limited  liability  company or partnership
power (as applicable) and all material  governmental  licenses,  authorizations,
consents and approvals  required to carry on its businesses as now conducted and
as proposed to be conducted,  and (c) is duly qualified to transact  business as
foreign   corporations,   foreign   limited   liability   companies  or  foreign
partnerships (as applicable)

                                       47


in each  jurisdiction  where a failure to be so qualified  could have a material
adverse effect on their respective financial condition or operations.

     SECTION  7.3.   Corporate,   Limited  Liability   Company,Partnership   and
Governmental   Authorization;   Contravention.   The  execution,   delivery  and
performance  of this  Agreement,  the Notes and the  other  Loan  Papers by each
Company  purporting  to execute  the same are within such  Company's  corporate,
limited liability company or partnership  powers (as applicable),  when executed
will be duly authorized by all necessary corporate, limited liability company or
partnership  action (as  applicable),  require no action by or in respect of, or
filing with, any governmental body, agency or official and do not contravene, or
constitute a default  under,  any  provision of  applicable  law or  regulations
(including,  without  limitation,  the Margin Regulations) or of the partnership
agreement,  articles of  incorporation,  certificate of  incorporation,  bylaws,
regulations or other organizational  documents (as applicable) of such Companies
or of any agreement,  judgment,  injunction,  order,  decree or other instrument
binding upon such Company or result in the creation or imposition of any Lien on
any asset of any such Company except Liens securing the Notes.

     SECTION 7.4. Binding Effect. This Agreement constitutes a valid and binding
agreement of each  Borrower;  the Notes and the other Loan Papers when  executed
and delivered in accordance with this Agreement,  will the constitute  valid and
binding  obligations of each Company  executing the same; and each Loan Paper is
enforceable against each Company executing the same in accordance with its terms
except  as  (a)  the  enforceability  thereof  may  be  limited  by  bankruptcy,
insolvency or similar laws affecting  creditors  rights  generally,  and (b) the
availability  of equitable  remedies may be limited by equitable  principles  of
general applicability.

     SECTION 7.5. Financial  Information.  (a) The Gerrity Historical  Financial
Statements  fairly  present,  in conformity with generally  accepted  accounting
principles,  the consolidated  financial position of Gerrity as of the dates set
forth therein and its consolidated  results of operations and cash flows for the
periods covered thereby.

     (b)  The  Patina  Historical   Financial   Statements  fairly  present,  in
conformity  with generally  accepted  accounting  principles,  the  consolidated
financial  position of Patina (after giving effect to the  contribution  of SOCO
Wattenberg  to Patina but prior to giving  effect to the Merger) as of the dates
set forth  therein and its  consolidated  results of  operations  and cash flows
(after giving effect to the  contribution of SOCO Wattenberg to Patina but prior
to giving effect to the Merger) for the periods covered thereby.

     (c) The Patina Pro Forma Financial Statements comprise a combination of the
Gerrity  Historical  Financial  Statements and the Patina  Historical  Financial
Statements  for  corresponding  periods  and  as  of  corresponding  dates  with
retroactive  adjustments  to give  effect to the  Merger  and the other  Closing
Transactions as of such dates.

     (d)  The  Pro  Forma  Segregated   Balance  Sheets  comprise  (i)  Patina's
consolidated  balance  sheet as of December 31, 1995  excluding  Gerrity and its
Subsidiaries  and otherwise  adjusted to give effect to the Merger and the other
Closing  Transactions as of such date, and (ii) Gerrity's  audited  consolidated
balance  sheet as of December 31, 1995 adjusted to give effect to the Merger and
the other Closing Transactions as of such date.

     (e) The Projection was prepared by management of Patina and Gerrity in good
faith based on the assumptions set forth therein which  management of Patina and
Gerrity considered reasonable at the time such Projection was prepared and which
management of Patina considers to be reasonable on

                                       48


the date hereof.

     (f) Prior to giving effect to the Closing  Transactions,  Patina and Merger
Sub (i) have no material assets, liabilities, obligations or commitments (fixed,
contingent,  contractual  or  otherwise)  other  than  rights,  liabilities  and
obligations  arising under the Closing  Documents and this  Agreement,  and (ii)
have not and do not  engage in any  operations  or  activities  other than those
directly related to the consummation of the Closing Transactions.

     (g) There has been no material  adverse  change in the business,  financial
position,  results of  operations or prospects of any Company since (i) December
31, 1995 to the extent this  representation and warranty is made or deemed to be
made as of any date prior to the  receipt by Banks of the  financial  statements
for each Borrower and its Subsidiaries required to be delivered by each Borrower
to Banks  pursuant  to  Sections  8.1(a),  (b),  (c),  (d),  (e) and (f) hereof,
prepared  as of the end of the  first  complete  Fiscal  Quarter  following  the
Closing  Date,  or (ii) since the date of the most recent  financial  statements
delivered  to Banks  pursuant to Sections  8.1(a),  (b),  (c),  (d), (e) and (f)
hereof to the extent this  representation and warranty is made or deemed made as
of any date after  receipt by Banks of the financial  statements  prepared as of
the end of the first complete Fiscal Quarter following the Closing Date required
to be delivered by each Borrower to Banks pursuant to Sections 8.1(a), (b), (c),
(d), (e) and (f) hereof.

     SECTION 7.6.  Litigation.  Except for matters disclosed in the Registration
Statement  or  arising  after  the date of this  Agreement  which  are  promptly
disclosed in writing to Banks,  there is no action,  suit or proceeding  pending
against,  or to the knowledge of any Borrower,  threatened  against or affecting
any Company before any court or arbitrator,  any  governmental  body,  agency or
official in which there is a reasonable possibility of an adverse decision which
could materially adversely affect the business,  consolidated financial position
or  consolidated  results of  operations  of any  Company or which  could in any
manner draw into question the validity of the Loan Papers.

     SECTION  7.7.  ERISA.No  Company  is a party to or bound by, or at any time
prior to the date hereof, has been a party to, or bound by, any Plan.

     SECTION  7.8.  Taxes and  Filing of Tax  Returns.  Except as  disclosed  on
Schedule  8, each  Company  and its  predecessors  have filed all  material  tax
returns  required  to have been filed and has paid all Taxes shown to be due and
payable on such returns,  including interest and penalties,  and all other Taxes
which are  payable by such  party,  to the  extent the same have  become due and
payable other than Taxes with respect to which a failure to pay would not have a
material  adverse  effect on any  Company.  Except as  disclosed  on Schedule 8,
Borrowers  do not know of any  proposed  material  Tax  assessment  against  any
Company,  and all Tax  liabilities  of each  Company  and its  predecessors  are
adequately  provided  for.  Except as  disclosed  on  Schedule  8 and  except as
hereinafter  disclosed  in writing  to Banks,  no income  tax  liability  of any
Company  or any of  their  respective  predecessors  or  Subsidiaries  has  been
asserted by the Internal  Revenue  Service for Taxes in excess of those  already
paid.

     SECTION 7.9. Title to Properties; Liens. After giving effect to the Closing
Transactions,  each  Borrower  and each of its  Subsidiaries  has good and valid
title  to all  material  assets  purported  to be owned  by it  subject  only to
Permitted Encumbrances.  Without limiting the foregoing,  after giving effect to
the Closing Transactions, (a) each Borrower and its Restricted Subsidiaries have
good and valid title to all oil and gas  properties and all Related Assets owned
by each such Borrower and its Restricted  Subsidiaries which are included in the
most recent Reserve Reports and Related Asset Reports  provided to Banks (except
for oil and gas  properties  disposed of in  compliance  with Section 9.5 to the
extent this representation and warranty is made or deemed made after the Closing
Date) and except for Permitted

                                       49


Encumbrances,  and (b) the  Companies  have good and valid title to all material
assets  reflected  in the  Financial  Statements  and any  subsequent  financial
statements  delivered to Banks pursuant to Sections 8.1(a), (b), (c), (d) (e) or
(f) hereof.

     SECTION 7.10. Business;  Compliance.  Each Company has performed and abided
by all obligations required to be performed under each license,  permit,  order,
authorization, grant, contract, agreement, or regulation to which any Company is
a party or by which any Company or any of the assets of any Company are bound to
the  extent a failure  to  perform  and abide by such  obligations  could have a
material  adverse  effect  on  the  assets,  liabilities,  financial  condition,
operations or prospects of such Company individually or the Companies taken as a
whole;  provided that to the extent oil and gas properties  owned by any Company
are  operated by  operators  other than a Company or an  Affiliate of a Company,
none  of  the  Borrowers  have  knowledge  that  any  such  obligation   remains
unperformed and the appropriate  Person has diligently  enforced all contractual
obligations of such operators to insure performance.

     SECTION 7.11.  Licenses,  Permits,  Etc. Each Company  possesses such valid
franchises,   certificates  of  convenience  and  necessity,  operating  rights,
licenses, permits, consents, authorizations, exemptions and orders of tribunals,
as are necessary to carry on its business as now being  conducted  except to the
extent a failure  to  obtain  any such item  would not have a  material  adverse
effect  on such  Company  individually  or on the  Companies  taken  as a whole;
provided  that to the extent oil and gas  properties  owned by any  Company  are
operated by operators other than a Company or an Affiliate of a Company, none of
the  Borrowers  have  knowledge  that  possession  of such  items  has not  been
obtained,  and the  appropriate  Person has diligently  enforced all contractual
obligations of such operators to obtain such items.

     SECTION  7.12.  Compliance  with Law. The business and  operations  of each
Company have been and are being  conducted  in  accordance  with all  applicable
laws,  rules and  regulations  of all  tribunals,  other  than  laws,  rules and
regulations   the  violation  of  which  could  not  (either   individually   or
collectively)  have  a  material  adverse  effect  on any  Company's  individual
financial condition or operations or on the financial condition or operations of
the  Companies  taken as a whole  (both  before and after  giving  effect to the
Closing Transactions);  provided that to the extent oil and gas properties owned
by any Company are operated by operators other than a Company or an Affiliate of
a Company,  none of the  Borrowers  have  knowledge  of  non-compliance  and the
appropriate Person has diligently  enforced all contractual  obligations of such
operators to insure compliance.

     SECTION 7.13.  Ownership  Interests.  The Reserve Reports and Related Asset
Reports most  recently  provided to Banks  accurately  reflect,  and all Reserve
Reports and Related Asset Reports hereafter delivered pursuant to this Agreement
will reflect,  in all material respects,  the ownership interests in the oil and
gas properties and Related Assets referred to therein  (including all before and
after payout calculations).

     SECTION 7.14. Full Disclosure.  All information heretofore furnished by any
Company  (or any other party on any  Company's  behalf) to any Agent or any Bank
for  purposes  of or in  connection  with  this  Agreement  or  any  transaction
contemplated  hereby is, and all such  information  hereafter  furnished  by any
Company  or on behalf  of any  Company  to any Agent or any Bank will be,  true,
complete and accurate in every material respect or based on reasonable estimates
on the date as of which such information is stated or certified.  Borrowers have
disclosed  to Banks in writing  any and all facts  (other  than facts of general
public knowledge) which might reasonably be expected to materially and adversely
affect or might affect (to the extent any of the  Borrowers  can now  reasonably
foresee),  the  business,  operations,  prospects  or  condition,  financial  or
otherwise, of any Company or the ability of any Borrower

                                       50


or any Company to perform its  obligations  under this  Agreement  and the other
Loan Papers.

     SECTION  7.15.Subsidiaries.  Schedule 9 hereto accurately reflects,  before
and  after  giving  effect  to  the  Closing   Transactions  (i)  the  name  and
jurisdiction of  incorporation  of each  Subsidiary of each Borrower,  (ii) each
jurisdiction  in which each Subsidiary of each Borrower is qualified to transact
business as a foreign  corporation,  partnership or limited  liability  company,
(iii)  the  authorized,  issued  and  outstanding  capital  stock  of each  such
Subsidiary, including, the record (and to each Borrower's knowledge, beneficial)
owner  of such  capital  stock,  and  (iv) all  outstanding  warrants,  options,
subscription rights,  convertible securities or other rights to purchase capital
stock of each Subsidiary of each Borrower.

     SECTION  7.16.  Obligations  of  Unrestricted   Subsidiaries.   Except  for
Obligations arising under the Loan Papers and except as set forth on Schedule 10
hereto, no Borrower nor any of its Restricted Subsidiaries has any obligation of
any nature to any Unrestricted Subsidiary of such Borrower.

     SECTION 7.17.  Environmental Matters. No real or personal property owned or
leased by any Company (including without limitation,  oil and gas properties and
Related  Assets) and no operations  conducted  thereon,  and to each  Borrower's
knowledge,  no  operations  of any prior  owner,  lessee or operator of any such
properties,  is or has been in violation  of any  Applicable  Environmental  Law
other than violations  which  individually  and in the aggregate will not have a
material adverse effect on any Company  individually or the Companies taken as a
whole,  nor is any such  property  or  operation  the  subject of any  existing,
pending   or,  to  each   Borrower's   knowledge,   threatened   action,   suit,
investigation,  inquiry or preceding  with respect to  Applicable  Environmental
Laws which could,  individually  or in the  aggregate,  have a material  adverse
effect on any  Borrower and its  Subsidiaries  taken as a whole (both before and
after  giving  effect  to  the  Closing  Transactions).  All  notices,  permits,
licenses, and similar  authorizations,  if any, required to be obtained or filed
in  connection  with the ownership or operation of any and all real and personal
property owned, leased or operated by any of the Companies,  including,  without
limitation, notices, licenses, permits and authorizations required in connection
with any past or present treatment,  storage,  disposal, or release of hazardous
substances,  petroleums,  or solid  waste into the  environment,  have been duly
obtained  or filed  except  to the  extent  the  failure  to obtain or file such
notices,  licenses, permits and authorizations would not have a material adverse
effect on any  Company  individually  or the  Companies  taken as a whole  (both
before and after giving effect to the Closing Transactions).  To each Borrower's
knowledge,  all hazardous substances,  if any, generated at any and all real and
personal  property  owned,  leased  or  operated  by  the  Companies  have  been
transported, treated, and disposed of only by carriers maintaining valid permits
under RCRA and any other  Applicable  Environmental  Laws.  Except as  expressly
described in the Registration Statement, there has been no release or threatened
release of any quantity of any hazardous  substances or petroleum on, to or from
any real or personal property owned,  leased, or operated by the Companies which
was not in compliance  with  Applicable  Environmental  Laws other than releases
which  would not,  individually  or in the  aggregate,  have a material  adverse
effect on any  Company  individually  or the  Companies  taken as a whole  (both
before and after giving effect to the Closing Transactions). Except as expressly
described in the Registration Statement, no Company has any contingent liability
in connection with any release or threatened release of any hazardous substance,
petroleum,  or solid  waste  into the  environment  which  could have a material
adverse effect on any Company individually or the Companies taken as a whole.

     SECTION 7.18. Closing Documents.  Borrowers have provided Agent with a true
and correct copy of each Closing Document. No rights or obligations of any party
to any of the Closing Documents have been waived in any material respect, and no
party  to  any  of the  Closing  Documents  is in  default  of  its  obligations
thereunder.  Each of the Closing  Documents is a valid,  binding and enforceable
obligation of the parties  thereto in  accordance  with its terms and is in full
force and effect.


                                       51


     SECTION  7.19.  Burdensome  Obligations.  Except as disclosed in writing to
Banks prior to the date hereof,  neither any Company nor the  properties  of any
Company is subject to any law or regulation or subject to any restriction  under
the certificate or articles of incorporation, partnership agreement, regulations
or other  organizational  documents  of any  Company or under any  agreement  or
instrument  to which any Company is a party or by which any of their  respective
properties  may be subject or bound,  which is so unusual or burdensome as to be
likely  in the  foreseeable  future  to have a  material  adverse  effect on the
assets, liabilities, financial condition, operations or prospects of any Company
individually or the Companies taken as a whole.

     SECTION 7.20. Government  Regulations.  No Company is subject to regulation
under the Public Utility Holding Company Act of 1935, the Federal Power Act, the
Interstate  Commerce  Act,  the  Investment  Company  Act of 1940 (as any of the
preceding acts have been amended) or any other law or regulation which regulates
the  incurring by it of Debt,  including,  but not limited to, laws  relating to
common  carriers or the sale of electricity,  gas, steam,  water or other public
utility services.

                                  ARTICLE VIII

                              AFFIRMATIVE COVENANTS

     Each Borrower  agrees that, so long as any Bank has any  commitment to lend
or  participate  in Letter of Credit  Exposure  hereunder or any amount  payable
under any Note remains unpaid or any Letter of Credit remains outstanding:

     SECTION 8.1. Information. Borrowers will deliver, or cause to be delivered,
to each of the Banks:

     (a) as soon as available and in any event within ninety (90) days after the
end of each Fiscal Year of Patina, consolidated and consolidating balance sheets
of Patina as of the end of such  Fiscal Year and the  related  consolidated  and
consolidating  statements of income and cash flow for such Fiscal Year,  setting
forth in each case in comparative form the figures for the previous Fiscal Year,
all  reported  by  Patina  in  accordance  with  generally  accepted  accounting
principles  and  audited  by Arthur  Andersen  LLP or other  independent  public
accountants  of nationally  recognized  standing  acceptable  to  Administrative
Agent;

     (b) as soon as available and in any event within forty-five (45) days after
the end of each of the first  three (3) Fiscal  Quarters  of each Fiscal Year of
Patina, consolidated and consolidating balance sheets of Patina as of the end of
such quarter and the related consolidated and consolidating statements of income
and cash flow for such quarter and for the portion of Patina's Fiscal Year ended
at the end of such quarter,  setting forth in each case in comparative  form the
figures for the corresponding  quarter and the corresponding portion of Patina's
previous Fiscal Year; provided, however, that such balance sheets and statements
of income and cash flow for the Fiscal  Quarter  ending March 31, 1996,  will be
delivered  to each  of the  Banks  by May 31,  1996.  All  financial  statements
delivered  pursuant to this Section  8.1(b) shall be certified as to fairness of
presentation,  generally accepted  accounting  principles and consistency by the
chief financial officer or the chief accounting officer of Patina;

     (c) as soon as available and in any event within ninety (90) days after the
end of each Fiscal Year of Patina, consolidated and consolidating balance sheets
of Patina (excluding  Gerrity and its Subsidiaries) as of the end of such Fiscal
Year and the related  consolidated  and  consolidating  statements of income and
cash flow for such Fiscal Year,  setting forth in each case in comparative  form
the figures for the previous  Fiscal Year,  all reported by Patina in accordance
with generally accepted accounting

                                                        52


principles  and  audited  by Arthur  Andersen  LLP or other  independent  public
accountants  of nationally  recognized  standing  acceptable  to  Administrative
Agent;

     (d) as soon as available and in any event within forty-five (45) days after
the end of each of the first  three (3) Fiscal  Quarters  of each Fiscal Year of
Patina,  consolidated  and  consolidating  balance  sheets of Patina  (excluding
Gerrity  and its  Subsidiaries)  as of the end of such  quarter  and the related
consolidated  and  consolidating  statements  of  income  and cash flow for such
quarter  and for the  portion of  Patina's  Fiscal Year ended at the end of such
quarter,  setting  forth in each case in  comparative  form the  figures for the
corresponding  quarter and the corresponding portion of Patina's previous Fiscal
Year; provided,  however,  that such balance sheets and statements of income and
cash flow for the Fiscal  Quarter  ending March 31,  1996,  will be delivered to
each of the Banks by May 31, 1996. All financial  statements  delivered pursuant
to this  Section  8.1(d)  shall be  certified  as to fairness  of  presentation,
generally accepted accounting  principles and consistency by the chief financial
officer or the chief accounting officer of Patina;

     (e) as soon as available and in any event within ninety (90) days after the
end of each Fiscal  Year of  Gerrity,  consolidated  and  consolidating  balance
sheets of Gerrity as of the end of such Fiscal Year and the related consolidated
and  consolidating  statements  of income  and cash flow for such  Fiscal  Year,
setting  forth in each case in  comparative  form the figures  for the  previous
Fiscal  Year,  all reported by Gerrity in  accordance  with  generally  accepted
accounting  principles and audited by Arthur  Andersen LLP or other  independent
public   accountants   of   nationally   recognized   standing   acceptable   to
Administrative Agent;

     (f) as soon as available and in any event within forty-five (45) days after
the end of each of the first  three (3) Fiscal  Quarters  of each Fiscal Year of
Gerrity,  consolidated and consolidating balance sheets of Gerrity as of the end
of such quarter and the related  consolidated  and  consolidating  statements of
income and cash flow for such  quarter and for the portion of  Gerrity's  Fiscal
Year ended at the end of such quarter, setting forth in each case in comparative
form the figures for the corresponding  quarter and the corresponding portion of
Gerrity's previous Fiscal Year; provided,  however, that such balance sheets and
statements of income and cash flow for the Fiscal Quarter ending March 31, 1996,
will be delivered to each of the Banks by May 31, 1996. All financial statements
delivered  pursuant to this Section  8.1(f) shall be certified as to fairness of
presentation,  generally accepted  accounting  principles and consistency by the
chief financial officer of the chief accounting officer of Gerrity;

     (g)  simultaneously  with the delivery of each set of financial  statements
referred to in Sections  8.1(e) and (f) (and more frequently if Gerrity shall so
elect,  but in no event more frequently than once per calendar month), a Gerrity
Debt Restriction Certificate;

     (h)  simultaneously  with the delivery of each set of financial  statements
referred to in Sections 8.1(a),  (b), (c), (d), (e) and (f), a certificate of an
Authorized  Officer  of  Patina,  (i)  setting  forth in  reasonable  detail the
calculations required to establish whether the Borrowers were in compliance with
the  requirements  of Article X on the date of such financial  statements,  (ii)
stating whether there exists on the date of such certificate any Default and, if
any Default then exists,  setting forth the details thereof and the action which
the  Borrowers  are  taking or propose to take with  respect  thereto  and (iii)
stating whether or not such financial statements fairly reflect the business and
financial  condition  of the  Borrowers  as of the date of the  delivery of such
financial statements;

     (i) no later  than  March 15, and  September  15 of each  year,  reports of
production  volumes,  revenue,  expenses and product  prices for all oil and gas
properties  owned by the  Borrowers  and their  Restricted  Subsidiaries  with a
Recognized Value of $100,000 or more (determined on a pretax bases

                                       53


in  accordance   with  Financial   Accounting   Standards  Board  Statement  69)
(segregated between Gerrity and its Restricted  Subsidiaries on the one hand and
Patina and its Restricted Subsidiaries on the other hand) for the periods of six
(6) months ending the  preceding  December 31, and June 30,  respectively.  Such
reports  shall be  prepared  on a cash basis and shall be  reported on a well by
well,  lease by lease or field by field  basis or on such other  basis for which
such  properties  are  normally  reported  in the  ordinary  course of  Patina's
business;

     (j) immediately upon any Authorized  Officer of any Borrower becoming aware
of the occurrence of any Default, including, without limitation, a Default under
Article X, a certificate of an Authorized Officer of such Borrower setting forth
the details  thereof and the action which such  Borrower or Borrowers are taking
or propose to take with respect thereto;

     (k) promptly upon the mailing  thereof to the  stockholders of any Borrower
generally,  copies of all financial statements,  reports and proxy statements so
mailed;

     (l)  promptly  upon the filing  thereof,  copies of all final  registration
statements  (other than the exhibits thereto and any registration  statements on
Form S-8 or its  equivalent),  post  effective  amendments  thereto  and annual,
quarterly  or  special  reports  which any  Borrower  shall  have filed with the
Securities and Exchange Commission;

     (m)  promptly  notify  Banks  (i) of any  material  adverse  change  in the
financial  condition of any Borrower or any of its Subsidiaries,  or (ii) of the
occurrence of any acceleration of the maturity of any Debt owing by any Borrower
or  any of its  Subsidiaries  or any  default  under  any  indenture,  mortgage,
agreement,  contract or other  instrument  to which any of them is a party or by
which  any of them or any of their  properties  is  bound,  if such  default  or
acceleration   might  have  a  material  adverse  effect  upon  their  financial
condition;

     (n) immediately  upon receipt of the same, a copy of any notice received by
any Borrower of the  occurrence  of any Event of Default under and as defined in
the  Indenture  or any event which with  notice,  lapse of time or both,  would,
unless cured or waived, become an Event of Default;

     (o) promptly upon receipt of same, any notice or other information received
by any Borrower or any Subsidiary of Borrower  indicating any potential,  actual
or alleged (i)  non-compliance  with or  violation  of the  requirements  of any
Applicable  Environmental Law which could result in liability to any Borrower or
any Subsidiary for fines,  clean up or any other remediation  obligations or any
other  liability  in  excess of  $250,000  in the  aggregate;  (ii)  release  or
threatened release of any toxic or hazardous waste,  substance,  or constituent,
or other substance into the  environment  which release would impose on Borrower
or any Subsidiary a duty to report to a governmental authority or to pay cleanup
costs or to take remedial  action under any Applicable  Environmental  Law which
could result in liability to any Borrower or any Subsidiary for fines,  clean up
and other  remediation  obligations or any other liability in excess of $250,000
in the  aggregate;  or  (iii)  the  existence  of any  Lien  arising  under  any
Applicable  Environmental Law securing any obligation to pay fines,  clean up or
other  remediation  costs or any other  liability  in excess of  $250,000 in the
aggregate.  Without  limiting the  foregoing,  Borrowers  shall provide to Banks
promptly  upon  receipt  of same  copies  of all  environmental  consultants  or
engineers  reports  received by any Borrower or any  Subsidiary  of any Borrower
which would render the  representation  and  warranty  contained in Section 7.17
untrue or inaccurate in any respect;

     (p) In the event any  notification  is provided by any Borrower to any Bank
or  Administrative  Agent  pursuant to Section  8.1(o) hereof or  Administrative
Agent or any Bank  otherwise  learns of any event or  condition  under which any
such notice would be required, then, upon request of

                                       54


Required  Banks,  such Borrower or Borrowers  shall,  within ninety (90) days of
such  request,  cause to be furnished to each Bank a report by an  environmental
consulting firm acceptable to Administrative  Agent and Required Banks,  stating
that a review of such event,  condition or circumstance has been undertaken (the
scope of which shall be acceptable to  Administrative  Agent and Required Banks)
and detailing the findings, conclusions, and recommendations of such consultant.
Such  Borrower or Borrowers  shall bear all expenses and costs  associated  with
such review and updates  thereof,  as well as all remediation or curative action
recommended by any such environmental consultant; and

     (q) from time to time such additional  information  regarding the financial
position or business of any Borrower and its Subsidiaries as the  Administrative
Agent, at the request of any Bank, may reasonably request.

     SECTION 8.2.  Business of Borrowers.  The primary business of each Borrower
and its  Subsidiaries  will be the acquisition,  exploration  for,  development,
production,  transportation,  processing  and  marketing  of liquid  or  gaseous
hydrocarbons and accompanying elements and related businesses.

     SECTION 8.3.  Maintenance  of Existence.  Each Borrower,  shall,  and shall
cause each  Restricted  Subsidiary  to, at all times (a) maintain its corporate,
partnership or limited liability company existence in its state of incorporation
or organization  except to the extent any Restricted  Subsidiary ceases to be in
existence as a result of a merger or consolidation  expressly permitted pursuant
to Section 9.4, and (b) maintain its good standing and qualification to transact
business in all  jurisdictions  where the failure to maintain  good  standing or
qualification  to transact  business could have a material adverse effect on the
financial  condition  or  operations  of any  Borrower or any of its  Restricted
Subsidiaries individually or each Borrower and its Restricted Subsidiaries taken
as a whole.

     SECTION 8.4. Title Data. In addition to the title  information  required by
Section 5.1(f) hereof,  each Borrower shall, upon the reasonable  request of the
Required  Banks,  cause to be  delivered  to  Administrative  Agent  such  title
opinions and other information in its possession, control or direction regarding
title to the oil and gas  properties  owned by each Borrower and its  Restricted
Subsidiaries as are appropriate to determine the status thereof.

     SECTION 8.5. Right of Inspection.  Each Borrower will permit and will cause
each  of  its  Subsidiaries  to  permit  any  officer,   employee  or  agent  of
Administrative  Agent or any of the Banks to visit and inspect any of the assets
of  any  Borrower  and  its   Subsidiaries,   examine  any  Borrower's  and  its
Subsidiaries' books of record and accounts,  take copies and extracts therefrom,
and  discuss  the  affairs,  finances  and  accounts  of any  Borrower  and  its
Subsidiaries   with  any  such  Borrower's  and  its   Subsidiaries'   officers,
accountants  and  auditors,  all  at  such  reasonable  times  and as  often  as
Administrative  Agent or any of the Banks may desire,  all at the expense of the
applicable Borrower. Banks covenant and agree to preserve the confidentiality of
any  information  with respect to which any Borrower or any of its  Subsidiaries
have an  obligation  of  confidentiality  to a third  party (to the extent  such
obligation has been disclosed to Banks), except to the extent Banks are required
to disclose such information  pursuant to any applicable law, rule or regulation
of any  governmental  body or  pursuant  to the order of any court of  competent
jurisdiction.

     SECTION 8.6.  Maintenance of Insurance.  Each Borrower will, and will cause
each of its  Subsidiaries  to (and  will  use its  best  efforts  to  cause  all
operators of oil and gas properties  owned by Borrower and its  Subsidiaries and
Related  Assets to) at all times  maintain or cause to be  maintained  insurance
covering such risks as are customarily carried by businesses  similarly situated
including,   without  limitation,  the  following:  (a)  workmen's  compensation
insurance;  (b) employer's liability insurance; (c) comprehensive general public
liability and property damage insurance in respect of all activities in

                                       55


which any Borrower or any of its Subsidiaries might incur personal liability for
the death or injury of an employee or third person,  or damage to or destruction
of another's property;  (d) insurance against loss or damage by fire, lightning,
hail, tornado, explosion and other similar risk; (e) reservoir damage insurance;
and (f) comprehensive  automobile liability insurance.  All loss payable clauses
or provisions in all policies of insurance  maintained by Borrowers  pursuant to
this   Section  8.6  shall  be  endorsed  in  favor  of  and  made   payable  to
Administrative  Agent for the ratable  benefit of Banks,  as their interests may
appear.  Administrative  Agent for the  ratable  benefit of Banks shall have the
right to collect,  and each Borrower hereby assigns to Administrative  Agent for
the ratable  benefit of Banks,  any and all monies that may become payable under
any such policies of insurance by reason of damage,  loss or  destruction of any
of property  which stands as security for the  Obligations  or any part thereof,
and  Administrative  Agent may, at its  election,  either  apply for the ratable
benefit of Banks all or any part of the sums so collected  toward payment of the
Obligations  (or the portion  thereof with respect to which such property stands
as security),  whether or not such Obligations are then due and payable, in such
manner  as  Administrative  Agent may elect or  release  same to the  applicable
Borrower.

     SECTION 8.7.  Payment of Taxes and Claims.  Each  Borrower  will,  and will
cause each of its  Subsidiaries  to, pay (a) all Taxes imposed upon it or any of
its assets or with respect to any of its franchises, business, income or profits
before any  material  penalty or interest  accrues  thereon and (b) all material
claims (including, without limitation, claims for labor, services, materials and
supplies)  for sums which have  become due and  payable and which by law have or
might become a Lien (other than a Permitted  Encumbrance)  on any of its assets;
provided,  however,  no payment of Taxes or claims  shall be required if (i) the
amount,  applicability  or validity thereof is currently being contested in good
faith by  appropriate  action  promptly  initiated and  diligently  conducted in
accordance with good business  practices and no material part of the property or
assets  of any  Borrower  or any of its  Subsidiaries  are  subject  to  levy or
execution,  (ii) each Borrower as and to the extent  required in accordance with
generally  accepted  accounting  principles,  shall  have set aside on its books
reserves  (segregated to the extent  required by generally  accepted  accounting
practices) deemed by it to be adequate with respect thereto, and (iii) Borrowers
have notified Administrative Agent of such circumstances, in detail satisfactory
to Administrative Agent.

     SECTION 8.8.  Compliance  with Laws and  Documents.  Each Borrower will and
will cause each of its  Subsidiaries to comply with all laws,  their  respective
articles and  certificates of  incorporation,  bylaws,  partnership  agreements,
regulations and similar organizational  documents and all Material Agreements to
which any Borrower or any Subsidiary of any Borrower is a party, if a violation,
alone or when  combined  with all other such  violations,  could have a material
adverse  effect on the financial  condition or operations of any Borrower or any
of its Restricted  Subsidiaries  individually or any Borrower and its Restricted
Subsidiaries taken as a whole.

     SECTION 8.9. Operation of Properties and Equipment. (a) Each Borrower will,
and will cause each of its Subsidiaries to, maintain,  develop and operate their
respective oil and gas  properties and Related Assets in a good and  workmanlike
manner, and observe and comply with all of the terms and provisions,  express or
implied,  of all oil and gas leases  relating to such properties so long as such
oil and gas  leases are  capable  of  producing  hydrocarbons  and  accompanying
elements in paying quantities,  to the extent that the failure to so observe and
comply  could have a  material  adverse  effect on the  financial  condition  or
operations  of any Borrower  individually  or any Borrower and its  Subsidiaries
taken as a whole.

     (b) Each Borrower will, and will cause each of its  Subsidiaries to, comply
in all respects with all contracts and  agreements  applicable to or relating to
their  respective  oil  and  gas  properties  or  the  production  and  sale  of
hydrocarbons and accompanying elements therefrom, except to the extent

                                       56


a failure to so comply could not have a material adverse effect on the financial
condition or  operations  of any Borrower  individually  or any Borrower and its
Subsidiaries taken as a whole.

     (c) Each Borrower  will,  and will cause each of its  Subsidiaries,  at all
times, to maintain,  preserve and keep all operating equipment used with respect
to the oil and gas properties of each Borrower in proper  repair,  working order
and  condition,  and  make  all  necessary  or  appropriate  repairs,  renewals,
replacements,  additions and improvements thereto so that the efficiency of such
operating  equipment  shall at all times be properly  preserved and  maintained,
provided  that no item of  operating  equipment  need be so  repaired,  renewed,
replaced,  added to or improved,  if any applicable Borrower shall in good faith
determine  that such action is not  necessary  or  desirable  for the  continued
efficient  and  profitable  operation of the  business of such  Borrower and its
Subsidiaries.

     (d) With  respect  to the oil and gas  properties  of  Borrowers  and their
Subsidiaries  which are  operated by  operators  other than  Borrowers or one of
their  Subsidiaries,  Borrowers and their Subsidiaries shall not be obligated to
directly perform any  undertakings  contemplated by the covenants and agreements
contained in this Section 8.9 which are  performable  only by such operators and
are beyond the control of  Borrowers,  but shall be obligated to seek to enforce
such operators' contractual obligations to maintain, develop and operate the oil
and gas properties subject to such operating agreements.

     SECTION 8.10. Further Assurances.

     (a) Each  Borrower  will  execute and  deliver or cause to be executed  and
delivered such other and further  instruments or documents and take such further
action as in the judgment of  Administrative  Agent may be required to carry out
the provisions and purposes of the Loan Papers including  without  limitation to
create, preserve,  protect and perfect the Liens of the Administrative Agent for
the ratable benefit of the Banks as required by Section 5.1.

     (b) Patina will cause the Exchange Agent under the Exchange Agent Agreement
to deliver the  certificates  evidencing the shares of Gerrity  Preferred  Stock
acquired by Patina  pursuant to the Exchange Offer  contemplated by Section 7.20
of the Merger  Agreement to the Transfer  Agent  pursuant to Section 2.10 of the
Exchange Agent Agreement,  and thereafter will cause the Transfer Agent to issue
a new certificate in the name of Patina evidencing such certificates and deliver
such  certificate  to  Administrative  Agent  within  thirty (30) days after the
Closing Date at the address set forth on the signature pages hereto.

     SECTION 8.11.  Environmental  Law Compliance  and Indemnity.  Each Borrower
will,  and will  cause  each of its  Subsidiaries  to,  comply  in all  material
respects with all Applicable Environmental Laws, including,  without limitation,
(a)  all  licensing,  permitting,   notification  and  similar  requirements  of
Applicable   Environmental   Laws,   and  (b)  all   provisions   of  Applicable
Environmental  Law  regarding  storage,  discharge,   release,   transportation,
treatment and disposal of hazardous substances,  petroleum, solid waste or other
contaminants.  Each Borrower will, and will cause each of its  Subsidiaries  to,
promptly  pay  and  discharge  when  due  all  debts,  claims,  liabilities  and
obligations  with respect to any clean-up or remediation  measures  necessary to
comply with  Applicable  Environmental  Laws.  Each Borrower  hereby jointly and
severally  indemnifies and agrees to defend and hold Banks and their  successors
and assigns  harmless  from and against any and all claims,  demands,  causes of
action,  loss, damage,  liabilities,  costs and expenses  (including  reasonable
attorneys'  fees and court costs) of any and every kind or  character,  known or
unknown,  fixed or contingent,  asserted against or incurred by any of the Banks
at any time and from time to time including,  without limitation, those asserted
or arising  subsequent  to the payment or other  satisfaction  of the Loans,  by
reason of or arising out of the ownership, construction, occupancy,

                                       57


operation, use and maintenance of any of the collateral for the Loans, including
matters  arising out of the negligence of any of the Banks;  provided,  however,
this indemnity  shall not apply with respect to matters caused by or arising out
of (i) the gross negligence or willful misconduct of Banks (IT BEING THE EXPRESS
INTENTION  HEREBY THAT BANKS SHALL BE INDEMNIFIED FROM THE CONSEQUENCES OF THEIR
NEGLIGENCE);   and  (ii)  the  construction,   occupancy,   operation,  use  and
maintenance  of the  collateral  for the Loans by any owner,  lessee or party in
possession of the  collateral  for the Loans  subsequent to the ownership of the
collateral  for the  Loans  by any  Borrower  or any of their  Subsidiaries  (as
applicable),  provided  further,  however,  that this  subclause  (ii) shall not
exclude from the foregoing indemnity and agreement,  liability, claims, demands,
causes of action,  loss,  damage,  costs and  expenses  imposed by reason of the
ownership of the  collateral  for the Loans by Banks after  purchase by Banks at
any  foreclosure  sale or  transfer  in lieu  thereof  from any  Borrower or any
Restricted Subsidiary in partial or entire satisfaction of the Loans (unless the
same shall be solely  attributable  to the  subsequent  use of the collateral by
Banks during their  ownership  thereof).  The foregoing  indemnity and agreement
applies  to the  violation  of any  Applicable  Environmental  Law  prior to the
payment  or other  satisfaction  of the  Loans and any act,  omission,  event or
circumstance  existing or  occurring  on or about the  collateral  for the Loans
(including  without  limitation  the presence on the collateral for the Loans or
release  from the  collateral  for the  Loans  of  asbestos  or other  hazardous
substances or solid waste disposed of or otherwise  present in or released prior
to the payment or other satisfaction of the Loans). It shall not be a defense to
the  covenant  of  Borrowers  to  indemnify  that  the act,  omission,  event or
circumstance did not constitute a violation of any Applicable  Environmental Law
at the time of its existence or occurrence.  The provisions of this Section 8.11
shall survive the repayment of the Loans and shall  continue  thereafter in full
force and  effect.  In the  event of the  transfer  of the Loans or any  portion
thereof,  Banks or any prior  holder of the  Loans  and any  participants  shall
continue to be  benefitted by this  indemnity and agreement  with respect to the
period of such holding of the Loans.

     SECTION  8.12.  Change of Control  Offer.  Within 30 days after the Closing
Date Patina will deliver the Change of Control  Offer to the  Indenture  Trustee
and each holder of  Subordinated  Notes as required  pursuant to Section 4.18 of
the  Indenture  and will  deliver a copy of such Change of Control  Offer to the
Administrative  Agent  together  with evidence that such Change of Control Offer
has been so delivered to the Indenture  Trustee and each holder of  Subordinated
Notes.


                                   ARTICLE IX

                               NEGATIVE COVENANTS

     The Borrowers agree that, so long as any Bank has any commitment to lend or
participate in Letter of Credit  Exposure  hereunder or any amount payable under
any Note remains unpaid or any Letter of Credit remains outstanding:

     SECTION 9.1. Debt of Borrowers and their Restricted  Subsidiaries.  Neither
any Borrower nor any Restricted Subsidiary of any Borrower will incur, become or
remain liable for any Debt other than (a) Debt secured by Permitted Encumbrances
described  in subpart  (k) of the  definition  of  Permitted  Encumbrances,  (b)
Nonrecourse Debt, (c) the Loans, (d) the Subordinate Notes, (e) Debt outstanding
on the Closing Date  described on Schedule 11 hereto,  and (f)  Guarantees  by a
Borrower  or a  Restricted  Subsidiary  of  such  Borrower  of  Debt  and  other
liabilities of such Borrower or other  Restricted  Subsidiaries of such Borrower
provided that such Debt and other  liabilities  are  permitted  pursuant to this
Agreement;  provided, that the Debt permitted pursuant to Section 9.1(a) and (b)
incurred  by (i)  Gerrity  and its  Restricted  Subsidiaries  shall  not  exceed
$1,000,000  in the  aggregate  and (ii) Patina and its  Restricted  Subsidiaries
shall not exceed $1,000,000 in the aggregate.

                                       58



     SECTION 9.2. Restricted  Payments.  Neither any Borrower nor any Restricted
Subsidiary  of any  Borrower  will  declare  or  make  any  Restricted  Payment;
provided,  that,  so long as no  Default,  Event of  Default or  Borrowing  Base
Deficiency  then exists,  and provided that no Default or Event of Default would
result  therefrom  (a) Patina  shall be  permitted  to declare  and pay  accrued
dividends  on the  Preferred  Stock so long as, at any date,  the sum of (i) the
aggregate  amount of all such  dividends  declared  and paid  during  the period
commencing  on the  Closing  Date to and  including  such  date,  plus  (ii) the
aggregate amount of all Investments made by Patina to purchase Gerrity Preferred
Stock from the Closing Date to and  including  the date of such  declaration  or
payment  (excluding  Investments in Gerrity  Preferred Stock made in the form of
Preferred Stock or Common Stock) shall not exceed the Patina Restricted  Payment
Limit  in  effect  at such  time,  and (b)  Gerrity  shall be  permitted  to (i)
repurchase or redeem Subordinate Notes (A) tendered to Gerrity for redemption on
the Subordinate  Note Redemption Date pursuant to Section 4.08 of the Indenture,
and (B) after the  Subordinate  Note  Redemption  Date, and (ii) declare and pay
accrued  dividends on the Gerrity  Preferred Stock, so long as, at any date, the
sum of (A) the  aggregate  amount  of all  dividends  declared  and  paid on the
Gerrity  Preferred Stock during the period commencing on the Closing Date to and
including such date (excluding any such dividends paid to Patina),  plus (B) the
excess of the aggregate  repurchase or redemption  price paid by Gerrity for all
Subordinate Notes  repurchased or redeemed by Gerrity  subsequent to the Closing
Date over the sum of (1) 101% of the  aggregate  principal  balance  of all such
Subordinate Notes on the date of redemption or repurchase,  plus (2) accrued but
unpaid interest on all such Subordinate Notes redeemed on the date of redemption
or repurchase,  shall not exceed the Gerrity  Restricted Payment Limit in effect
on such date.  Nothing  contained  in this Section 9.2 shall limit or impair the
right and  ability of Gerrity to make  Distributions  to Patina or the right and
ability of the Restricted Subsidiaries of each Borrower to make Distributions to
such Borrower or to other Restricted Subsidiaries of such Borrower.

     SECTION 9.3.  Negative  Pledge.  Neither any  Borrower  nor any  Restricted
Subsidiary will create, assume or suffer to exist any Lien on any asset owned by
it (other than Permitted Encumbrances).

     SECTION  9.4.  Consolidations  and  Mergers.  Neither any  Borrower nor any
Subsidiary  of any  Borrower  will  consolidate  or merge with or into any other
Person;  provided, that so long as no Default or Event of Default exists or will
result (a) each Borrower may merge or consolidate with another Person so long as
such Borrower is the surviving corporation and, in the case of SWAT and Gerrity,
continues  to be a  wholly  owned  Subsidiary  of  Patina,  (b)  any  Restricted
Subsidiary  of a  Borrower  may  merge  or  consolidate  with  or  into  another
Restricted  Subsidiary of such  Borrower,  (c) any  Unrestricted  Subsidiary may
merge  with or  into  another  Unrestricted  Subsidiary,  (d)  any  Unrestricted
Subsidiary may merge with any other Person other than a Restricted Subsidiary so
long as such Unrestricted  Subsidiary is the surviving corporation,  and (e) any
Restricted Subsidiary may merge with any other Person so long as such Restricted
Subsidiary  is the  surviving  corporation  and is a wholly owned  Subsidiary of
Patina after giving effect thereto.

     SECTION 9.5.  Asset  Dispositions.  Except as provided in this Section 9.5,
none of the Borrowers nor any Restricted  Subsidiary shall sell, lease,  abandon
or otherwise  transfer any of its assets to any other Person other than pursuant
to an Exempt Transfer.  Each Borrower and its Restricted  Subsidiaries  shall be
permitted to sell or  otherwise  dispose of any asset other than (a) oil and gas
properties,  (b) Related Assets,  (c) debt and equity  securities  issued by any
Restricted  Subsidiary or by Gerrity,  and (d) accounts (as such term is defined
in the Uniform Commercial Code). Patina and its Restricted Subsidiaries shall be
permitted to sell oil and gas properties and Related  Assets;  provided that the
aggregate  value of all oil and gas properties and Related Assets sold by Patina
and its  Restricted  Subsidiaries  during any  period  between  Patina  Periodic
Determinations  shall not exceed the  greater  of (i)  $5,000,000,  or (ii) five
percent  (5%) of the  Patina  Borrowing  Base then in  effect.  Gerrity  and its
Restricted  Subsidiaries  may sell oil and gas  properties  and Related  Assets;
provided, that the aggregate value of all oil and gas properties and

                                       59


Related Assets sold by Gerrity and its Restricted Subsidiaries during any period
between  Gerrity  Periodic  Determinations  shall not exceed the  greater of (i)
$5,000,000,  or (ii) five  percent  (5%) of the Gerrity  Borrowing  Base then in
effect.

     SECTION 9.6. Amendments to Material  Documents.  No Borrower will, nor will
any Borrower  permit any of its Restricted  Subsidiaries  to, (a) enter into any
material  modification  or amendment of, grant any material  consent  under,  or
waive any material  right or obligation of any Person under (i) its  certificate
or articles of  incorporation,  bylaws,  partnership  agreement,  regulations or
other  organizational  documents,  or (ii) any of the Closing Documents,  or (b)
enter into any  modification  or amendment of, grant any consent under, or waive
any right or obligation of any Person under (i) the Intercompany Loan Documents,
(ii) the Indenture, or (iii) the Subordinate Notes.

     SECTION  9.7. Use of Proceeds.  The  proceeds of  Borrowings  under (a) the
Patina  Term  Commitments  will  be  used  solely  to make  advances  under  the
Intercompany  Loan Agreement,  which advances will be used by Gerrity solely for
the purposes described in Section 2.1, (b) the Patina Revolving Commitments will
not be used for any purpose other than (i) working capital,  (ii) to finance the
acquisition,  exploration  and development of oil and gas properties and Related
Assets and the  transportation,  processing  and  marketing of  hydrocarbons  by
Patina and its Restricted  Subsidiaries,  (iii)  Restricted  Payments  permitted
pursuant to Section 9.2, (iv) Investments permitted pursuant to Section 9.8, and
(v) to finance the  repayment of the Debt of SOCO assumed by Patina  pursuant to
the Merger Agreement,  and (c) the Gerrity  Commitments will not be used for any
purpose  other  than (i)  working  capital,  (ii) to  finance  the  acquisition,
exploration and development of oil and gas properties and Related Assets and the
transportation,  processing  and  marketing of  hydrocarbons  by Gerrity and its
Restricted Subsidiaries, (iii) Restricted Payments permitted pursuant to Section
9.2, (iv) to repay the obligations outstanding under the Existing Gerrity Credit
Agreement,  and (v) to refinance the Intercompany  Loan. None of the proceeds of
the Loans nor any Letter of Credit issued  hereunder  will be used,  directly or
indirectly,  (i) for the purpose, whether immediate,  incidental or ultimate, of
purchasing or carrying any Margin Stock,  or (ii) in violation of applicable law
or regulation (including, without limitation, the Margin Regulations).

     SECTION  9.8.   Investments.   Neither  any  Borrower  nor  any  Restricted
Subsidiary of any Borrower  will,  directly or  indirectly,  make any Investment
other than Permitted Investments.

     SECTION  9.9.  Transactions  with  Affiliates.  No  Borrower  will,  and no
Borrower  will  permit  any of  its  Subsidiaries  to,  engage  in any  material
transaction  with an  affiliated  Person  (other than,  in the case of Patina or
SWAT, with each other) unless such  transaction is generally as favorable to any
such  Borrower  or such  Subsidiary  as could  be  obtained  in an arm's  length
transaction with an unaffiliated  Person in accordance with prevailing  industry
customs  and  practices;  provided,  that,  nothing  in this  Section  9.9 shall
prohibit  Restricted  Subsidiaries  of Gerrity from making  Distributions  to or
Investments in Gerrity otherwise permitted by this Agreement.

     SECTION 9.10.  Plans.  No Borrower will, and no Borrower will permit any of
its Subsidiaries to, create, adopt or become bound by any Plan.

     SECTION 9.11.  Oil and Gas Hedge  Transactions.  No Borrower  will,  and no
Borrower will permit any of its Restricted  Subsidiaries  to, enter into Oil and
Gas Hedge  Transactions  which would cause the volume of hydrocarbons  which are
the subject of Oil and Gas Hedge Transactions in existence at any time to exceed
seventy-five  (75%)  of any such  Borrower's  and its  Restricted  Subsidiaries'
anticipated production from proved, developed producing reserves during the term
of existing Oil and Gas Hedge Transactions.

                                       60



     SECTION 9.12. Obligations of Unrestricted Subsidiaries. Except as expressly
permitted by Section 9.2, no Borrower will, nor will any Borrower  permit any of
its  Restricted  Subsidiaries  to,  incur any  liability  or  obligation  to any
Unrestricted  Subsidiary of such  Borrower of any nature,  or have any liability
(whether by operation of law or otherwise) for any liability, Debt or obligation
of any Unrestricted Subsidiary.

     SECTION 9.13. Acquisitions.  No Borrower will, nor will any Borrower permit
any of its Restricted  Subsidiaries  to, acquire,  in a single  transaction or a
series  of  related  transactions,  all or  substantially  all of the  assets or
capital stock (or other  outstanding  equity  interests of any Person) or all or
substantially all of the assets  comprising a division of any Person;  provided,
that nothing  contained in this Section 9.13 shall  prohibit any Borrower or any
Restricted  Subsidiary  of any Borrower  from making any  acquisition  of assets
consisting of oil and gas  properties or any other  acquisition  which is also a
Permitted Investment.

     SECTION 9.14.  Operating  Leases.  No Borrower  will, nor will any Borrower
permit any of its  Subsidiaries  to, incur,  become,  or remain liable under any
Operating Lease which would cause the aggregate amount of all Rentals payable by
any such  Borrower  and its  Restricted  Subsidiaries  in any Fiscal  Year to be
greater than $1,500,000.

     SECTION 9.15.  Speculative Hedge  Transactions.  No Borrower will, nor will
any  Borrower  permit  any of its  Restricted  Subsidiaries  to,  enter into any
commodity,  interest  rate,  currency  or other  swap,  option,  collar or other
derivative  transaction  pursuant to which any such Borrower or such  Restricted
Subsidiary  speculates on the movement of commodity prices,  securities  prices,
interest rates,  financial markets,  currency markets or other items;  provided,
that nothing contained in this Section 9.15 shall prohibit any Borrower from (a)
entering  into interest  rate swaps or other  interest  rate hedge  transactions
pursuant to which any such  Borrower  hedges  interest rate risk with respect to
the interest  reasonably  anticipated to be incurred pursuant to this Agreement,
(b)  entering  into Oil and Gas Hedge  Transactions  permitted  by Section  9.11
hereof, or (c) making Permitted Investments.

                                    ARTICLE X

                               FINANCIAL COVENANTS

     Each Borrower  agrees that, so long as any Bank has any  commitment to lend
or  participate  in Letter of Credit  Exposure  hereunder or any amount  payable
under any Note remains unpaid or any Letter of Credit remains outstanding:

     SECTION 10.1.  Financial  Covenants  applicable to Patina on a Consolidated
Basis.

     (a) Patina will not permit its ratio of Consolidated  Current Assets to its
Consolidated  Current Liabilities as of the end of any Fiscal Quarter to be less
than 1 to 1.

     (b)  Patina  will not  permit  its  ratio of  Consolidated  Funded  Debt to
Consolidated  Total  Capital as of (i) September 30, 1996 and December 31, 1996,
to exceed .60 to 1, (ii) as of the end of any Fiscal  Quarter  during the Fiscal
Year ending  December 31,  1997,  to exceed .55 to 1, and (iii) as of the end of
any Fiscal Quarter ending on or after March 31, 1998, to exceed .50 to 1.

     (c)  Patina  will not  permit  its  Ratio of  Consolidated  Funded  Debt to
Adjusted Consolidated EBITDA as of the end of any Fiscal Quarter commencing with
the Fiscal Quarter ending September 30, 1996, to exceed 4.5 to 1.

                                       61



     SECTION 10.2.  Financial  Covenants  applicable to Patina on a Consolidated
Basis excluding Gerrity.

     (a) Patina will not permit its ratio of Consolidated  Current Assets to its
Consolidated  Current  Liabilities  excluding Gerrity and its Subsidiaries as of
the end of any Fiscal Quarter to be less than 1 to 1.

     (b) Patina will not permit its consolidated  shareholder's equity excluding
Gerrity and its  Subsidiaries  as of the end of any Fiscal  Quarter ending on or
after  September  30,  1996,  to be less  than  the  remainder  of (i)  Patina's
consolidated  shareholders  equity excluding  Gerrity and its Subsidiaries as of
June 30, 1996, minus (ii) $7,500,000.

     (c) Patina will not permit its Consolidated  Funded Debt (excluding  Funded
Debt  outstanding  under the Patina Term Loan) to Adjusted  Consolidated  EBITDA
excluding  Gerrity  and its  Subsidiaries  as of the end of any  Fiscal  Quarter
ending on or after September 30, 1996, to exceed 4.5 to 1.

     SECTION 10.3.  Financial Covenants  Applicable to Gerrity on a Consolidated
Basis.

     (a) Gerrity will not permit its ratio of its Consolidated Current Assets to
its Consolidated  Current  Liabilities as of the end of any Fiscal Quarter to be
less than 1 to 1.

     (b)  Gerrity  will not  permit  its ratio of  Consolidated  Funded  Debt to
Consolidated  Total  Capital  as of the end of any Fiscal  Quarter  ending on or
after September 30, 1996, to exceed .60 to 1.

     (c)  Gerrity  will not  permit  its Ratio of  Consolidated  Funded  Debt to
Adjusted  Consolidated  EBITDA as of the end of any Fiscal  Quarter ending on or
after September 30, 1996, to exceed 4.5 to 1.

 
                                   ARTICLE XI

                                    DEFAULTS

     SECTION 11.1.  Events of Default.  If one or more of the  following  events
(collectively  "Events of Default" and individually an "Event of Default") shall
have occurred and be continuing:

     (a) any  Borrower  shall fail to pay when due any  principal of any Note or
any reimbursement obligation with respect to any Letters of Credit when due;

     (b) any  Borrower  shall fail to pay any accrued  interest due and owing on
any Note or any fees or any other  amount  payable  hereunder  when due and such
failure shall continue for a period of five (5) days;

     (c) any Borrower shall fail to observe or perform any covenant or agreement
contained in Article IX or X;

     (d) any  Borrower  or any  Restricted  Subsidiary  shall fail to observe or
perform any covenant or agreement  contained in this Agreement or the other Loan
Papers  (other than those covered by Sections  11.1(a),  (b) and (c)) for thirty
(30) days after written notice thereof has been given to any

                                       62


such  Borrower by  Administrative  Agent at the  request of any Bank,  provided,
that, as to Defaults under Section 8.1(j) and (m), any defaulting Borrower shall
not be  entitled  to more than one (1)  notice and  period of cure  during  each
calendar year, and as to each other type of Default,  such Borrower shall not be
entitled to more than two (2)  notices  and periods of cure during any  calendar
year;

     (e)  Borrowers  shall fail to cause the financial  statements  described in
Sections  8.1(a),  (c)  and  (e)  to  be  accompanied  by  the  opinion  without
qualification  (except  for  qualifications  required  by changes in  accounting
methods with which the applicable Borrower's auditors concur) of the accountants
preparing  such  opinion,  that  such  financial  statements  were  prepared  in
accordance with generally accepted accounting  principles and fairly present the
consolidated  financial  position and results of  operations  of the  applicable
Borrower;

     (f) any representation, warranty, certification or statement made or deemed
to have been made by any  Company  in this  Agreement  or by any  Company or any
other  Person on  behalf of any  Company  in any other  Loan  Paper or any other
certificate,  financial  statement or other document  delivered pursuant to this
Agreement shall prove to have been incorrect in any material respect when made;

     (g) any  Company  shall fail to pay any  Material  Debt at  maturity or any
event or  condition  (i) shall occur which  results in the  acceleration  of the
maturity of any Material  Debt of any Company,  or (ii) shall occur and continue
for a period of thirty  (30) days (or such  shorter  cure  period as is provided
pursuant to the terms of such Material Debt) which entitles (or, with the giving
of notice or lapse of time or both,  would unless cured or waived,  entitle) the
holder of such Material Debt to accelerate the maturity thereof;

     (h) any Company shall commence a voluntary case or other proceeding seeking
liquidation,  reorganization or other relief with respect to itself or its debts
under any bankruptcy, insolvency or other similar law now or hereafter in effect
or seeking the  appointment  of a trustee,  receiver,  liquidator,  custodian or
other similar official of it or any substantial  part of its property,  or shall
consent to any such relief or to the appointment of or taking  possession by any
such official in an involuntary case or other proceeding  commenced  against it,
or shall make a general  assignment for the benefit of creditors,  or shall fail
generally  to pay its debts as they  become  due,  or shall  take any  corporate
action to authorize any of the foregoing;

     (i) an involuntary case or other proceeding shall be commenced  against any
Company seeking  liquidation,  reorganization or other relief with respect to it
or its debts  under  any  bankruptcy,  insolvency  or other  similar  law now or
hereafter  in  effect  or  seeking  the  appointment  of  a  trustee,  receiver,
liquidator, custodian or other similar official of it or any substantial part of
its  property,  and such  involuntary  case or  other  proceeding  shall  remain
undismissed and unstayed for a period of sixty (60) days; or an order for relief
shall be entered against any Company under the federal bankruptcy laws as now or
hereafter in effect;

     (j)  one  (1) or  more  judgments  or  orders  for  the  payment  of  money
aggregating  in excess of $1,000,000  shall be rendered  against any Company and
such  judgment or order (i) shall  continue  unsatisfied  and  unstayed  (unless
bonded with a  supersedeas  bond at least equal to such judgment or order) for a
period of thirty (30) days or (ii) is not fully paid and  satisfied at least ten
(10) days prior to the date on which any of its assets may be  lawfully  sold to
satisfy such judgment or order;


                                       63


     (k)  one  (1) or  more  judgments  or  orders  for  the  payment  of  money
aggregating  in  excess  of the  sum of (i)  ten  percent  (10%)  of the  Patina
Borrowing  Base then in effect,  plus (ii) (A) the amount of such judgment which
is covered by  insurance to the  satisfaction  of  Administrative  Agent and its
counsel, and (B) any amounts which Patina or any of its Restricted  Subsidiaries
has deposited with  Administrative  Agent to be held by Administrative  Agent as
security for the payment of such judgment  shall be rendered  against  Patina or
any of its Subsidiaries (excluding Gerrity or any of its Subsidiaries),  whether
or not otherwise bonded or stayed;

     (l)  one  (1) or  more  judgments  or  orders  for  the  payment  of  money
aggregating  in  excess  of the  sum of (i) ten  percent  (10%)  of the  Gerrity
Borrowing  Base then in effect,  plus (ii) (A) the amount of such judgment which
is covered by  insurance to the  satisfaction  of  Administrative  Agent and its
counsel, and (B) any amounts which Gerrity or any of its Restricted Subsidiaries
has deposited with  Administrative  Agent to be held by Administrative  Agent as
security for the payment of such judgment shall be rendered  against  Gerrity or
any of its Subsidiaries, whether or not otherwise bonded or stayed;

     (m) an Event of Default shall occur under and as defined in the Indenture;

     (n) any Company shall incur Environmental  Liabilities which,  individually
or when considered in the aggregate for all Companies, exceeds $10,000,000;

     (o) this  Agreement or any other Loan Paper shall cease to be in full force
and effect or shall be declared null and void or the validity or  enforceability
thereof  shall be contested  or  challenged  by any  Borrower or any  Restricted
Subsidiary of any Borrower,  or any Borrower or any Restricted Subsidiary of any
Borrower shall deny that it has any further liability or obligation under any of
the Loan  Papers,  or any Lien  created by the Loan Papers  shall for any reason
(other than the release  thereof in accordance with the Loan Papers) cease to be
a valid, first priority, perfected Lien upon any of the property purported to be
covered thereby;

     (p) any Person or group (as defined in Section  13(d)(3) or 14(d)(2) of the
Securities  Exchange Act of 1934) shall become the direct or indirect beneficial
owner (as defined in Rule 13d-3  under the  Securities  Exchange  Act of 1934 of
more than 30% of the total  voting  power of all  classes of capital  stock then
outstanding  of  SOCO  entitled   (without  regard  to  the  occurrence  of  any
contingency) to vote in elections of directors of SOCO;

     (q) at any date,  more than fifty percent (50%) of the Person's  comprising
SOCO's  board of  directors  are Person who were not  directors of SOCO one year
prior to such date; or

     (r) SOCO shall cease, for any reason,  to be the legal and beneficial owner
of more than fifty  percent  (50%) of the total  voting  power of all classes of
capital  stock  then  outstanding  of  Patina  entitled  (without  regard to the
occurrence of any contingency) to vote in elections of directors of Patina;

then, and in every such event,  Administrative  Agent shall without presentment,
notice or demand (unless expressly  provided for herein) of any kind (including,
without limitation, notice of intention to accelerate and acceleration),  all of
which are hereby  waived,  (a) if requested  by Required  Banks,  terminate  the
Commitments,  or any of them,  and they shall  thereupon  terminate,  and (b) if
requested by Required Banks,  take such other actions as may be permitted by the
Loan Papers  including,  declaring  the Notes,  or any of them,  (together  with
accrued interest  thereon) to be, and the Notes, or any of them, shall thereupon
become, immediately due and payable; provided that (c) in the case of any of the
Events of Default specified in Section 11.1(h) or (i), without any notice to any
Borrower  or any other act by  Administrative  Agent or Banks,  the  Commitments
shall thereupon terminate and the Notes (together with

                                       64

                                        1


accrued interest thereon) shall become immediately due and payable.


                                   ARTICLE XII

                                     AGENTS

     SECTION 12.1. Appointment and Authorization. Each Bank irrevocably appoints
and  authorizes  each  Agent to take such  action as agent on its  behalf and to
exercise such powers under this  Agreement,  the Notes and the other Loan Papers
as are delegated to such Agent by the terms hereof or thereof, together with all
such powers as are reasonably incidental thereto,  provided that, as between and
among Banks and Agents, no Agent will prosecute,  settle or compromise any claim
against any Borrower or release or  institute  enforcement  proceedings,  except
with the consent of Required Banks.  Each Bank and each Borrower agree that none
of the Agents are a  fiduciary  for Banks or for  Borrowers  but each  simply is
acting in the capacity described herein to alleviate  administrative burdens for
both Borrowers and Banks and that no Agent has any duties or responsibilities to
Banks or Borrowers except those expressly set forth herein.

     SECTION 12.2. Agents and Affiliates.  Each Agent in its individual capacity
and not as Agent  hereunder  shall have the same  rights  and powers  under this
Agreement as any other Bank and may exercise or refrain from exercising the same
as  though  it were not an Agent  hereunder  and  each  Agent in its  individual
capacity and not as Agent hereunder may accept deposits from, lend money to, and
generally   engage  in  any  kind  of  business  with  any  Borrower  and  their
Subsidiaries and Affiliates as if such parties were not Agents hereunder.

     SECTION 12.3.  Action by Agents.  The  obligations of Agents  hereunder are
only those  expressly set forth herein.  Without  limiting the generality of the
foregoing,  no Agent shall be  required  to take any action with  respect to any
Default  or Event of  Default,  except as  expressly  provided  in  Article  XI.
Notwithstanding the administrative authority delegated to Agents, no Agent shall
without the prior written approval of all Banks cause or permit any modification
of the Loan  Papers  which would (a)  increase  the  Commitments  of any Bank or
subject any Bank to any additional obligations, (b) forgive any of the principal
or reduce the rate of interest on any Loan or any fees  hereunder  (c)  postpone
the date fixed for payment of  principal  of or interest on any Loan or any fees
hereunder including the Termination Date, (d) change the percentage of the Total
Commitment,  or the number of Banks which shall be required for the Banks or any
of them to take any action  under  Section  14.5 or any other  provision of this
Agreement,  (e) permit Borrower to assign any of its rights hereunder, (f) amend
or waive any of the  provisions  of Article IV of the  definitions  contained in
Section 1.1 applicable  thereto,  or (g) provide for the release or substitution
of collateral  for the Loans other than releases  required  pursuant to sales of
collateral  which are  expressly  permitted  under  Section 9.5.  Subject to the
foregoing,  each Agent shall make such  requests or take such actions in respect
of  Borrower  as the  Required  Banks  shall  direct.  Further,  subject  to the
foregoing, the Agent shall grant such waivers, consents or approvals in favor of
Borrower as the Required Banks shall direct.

     SECTION 12.4.  Consultation with Experts. Each Agent may consult with legal
counsel (who may be counsel for any Borrower),  independent  public  accountants
and other experts selected by it and shall not be liable for any action taken or
omitted  to be taken by it in good faith in  accordance  with the advice of such
counsel, accountants or experts.

     SECTION  12.5.  Liability  of  Agents.  None of the Agents nor any of their
respective  directors,  officers,  agents,  or employees shall be liable for any
action taken or not taken by such Agent in

                                       65

                                        2


connection  herewith (a) with the consent or at the request of Required Banks or
(b) in the absence of its own gross negligence or willful  misconduct,  IT BEING
THE  INTENTION  OF  BANKS  THAT  SUCH  PARTIES  SHALL  NOT  BE  LIABLE  FOR  THE
CONSEQUENCES OF THEIR ORDINARY  NEGLIGENCE.  None of the Agents nor any of their
respective officers,  directors, agents or employees shall be responsible for or
have any duty to ascertain,  inquire into or verify (i) any statement,  warranty
or  representation  made in  connection  with this  Agreement  or any  borrowing
hereunder,  (ii)  the  performance  or  observance  of any of the  covenants  or
agreements of Borrowers,  (iii) the  satisfaction of any condition  specified in
Article VI, except receipt of items  required to be delivered to  Administrative
Agent, or (iv) the validity, effectiveness or genuineness of this Agreement, the
Notes or any other instrument or writing  furnished in connection  herewith.  No
Agent shall incur any liability by acting in reliance upon any notice,  consent,
certificate,  statement,  or other writing  (which may be a bank wire,  telex or
similar  writing)  believed  by it to be  genuine  or to be signed by the proper
party or parties or upon any oral notice which Agent  believes will be confirmed
in writing by the proper party or parties. If any Agent fails to take any action
required  to be taken by it under the Loan  Papers  after the  occurrence  of an
Event of Default and within a reasonable  time after being requested to do so by
any Bank (after such  requesting  Bank has  obtained  the approval of such other
Banks as  required),  such Agent  shall not suffer or incur any  liability  as a
result  thereof,  but such  requesting  Bank may  request  such Agent to resign,
whereupon such Agent shall so resign pursuant to Section 12.9.

     SECTION  12.6.  Delegation  of Duties.  Each Agent may  execute  any of its
duties hereunder by or through officers,  directors,  employees,  attorneys,  or
agents.

     SECTION 12.7. Indemnification.  Each Bank shall, ratably in accordance with
its Commitment Percentage, indemnify each Agent (to the extent not reimbursed by
Borrowers) against any cost, expense (including counsel fees and disbursements),
claim,  demand,  action,  loss or  liability  (except  such as result  from such
Agent's gross  negligence or willful  misconduct)  that such Agent may suffer or
incur in connection  with this  Agreement or any action taken or omitted by such
Agent  hereunder,  including  without  limitation,  matters  arising out of such
Agent's  own  negligence.  IT BEING THE  INTENTION  OF EACH BANK THAT EACH AGENT
SHALL BE INDEMNIFIED FOR THE CONSEQUENCES OF ITS ORDINARY NEGLIGENCE.

     SECTION  12.8.  Credit  Decision.  Each  Bank  acknowledges  that  it  has,
independently  and without  reliance upon any Agent or any other Bank, and based
on such  documents and  information as it has deemed  appropriate,  made its own
credit  analysis  and  decision  to enter  into this  Agreement.  Each Bank also
acknowledges that it will,  independently and without reliance upon any Agent or
any other Bank,  and based on such  documents and  information  as it shall deem
appropriate at the time,  continue to make its own credit decisions in taking or
not taking any action under this Agreement.

     SECTION 12.9.  Successor Agent. Each Agent may resign at any time by giving
written notice thereof to Banks and Borrowers. In addition, Borrowers may, prior
to a Default,  request the designation by Banks of a successor  Agent.  Upon any
such request by Borrowers or resignation by an Agent,  Required Banks shall have
the right to  appoint a  successor  Agent,  which  shall be one of Banks.  If no
successor Agent shall have been so appointed by Required Banks and accepted such
appointment  within thirty (30) days after the retiring Agent's giving of notice
of resignation or Borrowers'  request for a successor  Agent,  then the retiring
Agent may, on behalf of Banks, appoint a successor Agent (as applicable),  which
shall (a) be a commercial  bank organized under the laws of the United States of
America or of any State thereof and having a combined  capital and surplus of at
least  $500,000,000  and (b) unless the successor Agent is a Bank, be reasonably
acceptable to Borrowers.  Upon the acceptance of its  appointment as a successor
Agent  hereunder,  such successor  Agent shall  thereupon  succeed to and become
vested with all the rights and duties of the  retiring  Agent,  and the retiring
Agent shall be

                                       66


discharged  from  its  duties  and  obligations  hereunder.  After  any  Agent's
resignation  hereunder,  the  provisions of this Section 12.9 shall  continue to
inure to its benefit as to any actions  taken or omitted to be taken by it while
it was Agent  hereunder.  Borrowers  shall be entitled to  recommend a successor
Agent at the time of designation of any successor Agent pursuant to this Section
12.9.  Banks  shall  give  due  consideration  to  the  successor  nominated  by
Borrowers, but shall have no obligation to approve such nominee.


                                  ARTICLE XIII

                       PROTECTION OF YIELD; CHANGE IN LAWS

     SECTION 13.1. Basis for Determining  Interest Rate Applicable to Eurodollar
Tranches Inadequate. If on or prior to the first day of any Interest Period with
respect to a Borrowing:

     (a)  Administrative  Agent is advised by any Bank that  deposits in dollars
(in the  applicable  amounts)  are not  being  offered  to such  Bank(s)  in the
relevant market for such Interest Period, or

     (b) Banks having fifty percent (50%) or more of the aggregate amount of the
Total Commitment advise  Administrative  Agent that the Adjusted Eurodollar Rate
as determined by Administrative Agent will not adequately and fairly reflect the
cost to such Banks of funding their respective shares of the requested Borrowing
which  will be  subject  to a  Eurodollar  Tranche  for  such  Interest  Period,
Administrative Agent shall give notice thereof to Borrowers and Banks, whereupon
the  obligations  of Banks to allow  interest to be computed by reference to the
Adjusted Eurodollar Rate shall be suspended until  Administrative Agent notifies
Borrowers that the circumstances giving rise to such suspension no longer exist.
Unless Borrowers notify  Administrative Agent at least two (2) Domestic Business
Days  before the date of any  Borrowing  for which a Request for  Borrowing  has
previously  been given that it elects not to borrow on such date, such Borrowing
shall instead be made as an Adjusted Base Rate Borrowing.

     SECTION 13.2.  Illegality of  Eurodollar  Loans.  (a) If, after the date of
this Agreement,  the adoption of any applicable law, rule or regulation,  or any
change therein, or any change in the interpretation or administration thereof by
any governmental  authority,  central bank or comparable agency charged with the
interpretation  or  administration  thereof,  or  compliance by any Bank (or its
Eurodollar  Lending Office) with any request or directive (whether or not having
the force of law) of any such authority, central bank or comparable agency shall
make it unlawful or impossible for any Bank (or its Eurodollar  Lending  Office)
to make,  maintain  or fund any  portion of the Loans  subject  to a  Eurodollar
Tranche and such Bank shall so notify Administrative Agent, Administrative Agent
shall forthwith give notice thereof to the other Banks and Borrowers. Until such
Bank notifies Borrowers and Administrative  Agent that the circumstances  giving
rise to such suspension no longer exist, the obligation of such Bank to maintain
or fund any  portion  of the Loans  subject  to a  Eurodollar  Tranche  shall be
suspended.  Before giving any notice to  Administrative  Agent  pursuant to this
Section 13.2, such Bank shall designate a different Eurodollar Lending Office if
such designation will avoid the need for giving such notice and will not, in the
judgment of such Bank, be otherwise  disadvantageous  to such Bank. If such Bank
shall  determine  that it may not  lawfully  continue to  maintain  and fund any
portion of an outstanding  Loan subject to a Eurodollar  Tranche to maturity and
shall so specify in such notice,  Borrowers (as  applicable)  shall  immediately
convert the principal  amount of each such Loan which is subject to a Eurodollar
Tranche to an Adjusted Base Rate Tranche of an equal principal  amount from such
Bank (on which interest and principal  shall be payable  contemporaneously  with
the unaffected Eurodollar Tranches of the

                                       67


other Banks).

     (b) No Bank shall be required to make any Loan  hereunder  if the making of
such Loan would be in violation of any law applicable to such Bank.

     SECTION  13.3.  Increased  Cost of  Eurodollar  Tranche.  If after the date
hereof,  the adoption of any applicable  law, rule or regulation,  or any change
therein,  or any change in the  interpretation or administration  thereof by any
governmental  authority,  central  bank or  comparable  agency  charged with the
interpretation  or  administration  thereof,  or  compliance by any Bank (or its
Lending  Office) with any request or directive  (whether or not having the force
of law) of any such authority, central bank or comparable agency:

     (a) shall  subject  any Bank (or its  Lending  Office) to any tax,  duty or
other  charge with  respect to  maintaining  or funding any portion of its Loans
subject to a Eurodollar  Tranche,  its Notes or its obligation to allow interest
to be computed by  reference to the  Adjusted  Eurodollar  Rate shall change the
basis  of  taxation  of  payments  to any Bank (or its  Lending  Office)  of the
principal of or interest on any Loan which is subject to any Eurodollar  Tranche
or any other  amounts  due under  this  Agreement  in respect of a Loan which is
subsequent to any  Eurodollar  Tranche or its obligation to allow interest to be
computed by reference to the Adjusted Eurodollar Rate (except for changes in the
rate of Tax on the overall net income of such Bank or its Lending Office imposed
by the jurisdiction in which such Bank's  principal  executive office or Lending
Office is located); or

     (b) shall impose, modify or deem applicable any reserve, special deposit or
similar requirement (including, without limitation, any such requirement imposed
by the Board of Governors of the Federal  Reserve  System,  but  excluding  with
respect to any Eurodollar Tranche any such requirement included in an applicable
Eurodollar  Reserve  Percentage)  against  assets of,  deposits  with or for the
account of or credit  extended by, any Bank's  Lending Office or shall impose on
any Bank (or its Lending Office) or the applicable  interbank  Eurodollar market
or  any  other  condition  affecting  Eurodollar  Tranches,  its  Notes  or  its
obligation  to allow  interest  to be  computed  by  reference  to the  Adjusted
Eurodollar Rate;

and the result of any of the  foregoing is to increase the cost to such Bank (or
its Lending  Office) of funding or maintaining  any Loan subject to a Eurodollar
Tranche,  or to reduce the amount of any sum received or receivable by such Bank
(or its Lending  Office)  under this  Agreement  or under its Notes with respect
thereto, by an amount deemed by such Bank to be material,  then, within five (5)
days after demand by such Bank (with a copy to the  Administrative  Agent),  the
Borrower(s) of the affected Loan shall pay to such Bank such  additional  amount
or amounts as will  compensate  such Bank for such  increased cost or reduction.
Each Bank will promptly notify the applicable Borrowers and Administrative Agent
of any event of which it has knowledge,  occurring after the date hereof,  which
will  entitle such Bank to  compensation  pursuant to this Section 13.3 and will
designate a different  Lending  Office if such  designation  will avoid the need
for, or reduce the amount of, such compensation and will not, in the judgment of
such Bank, be otherwise  disadvantageous to such Bank. A certificate of any Bank
claiming  compensation  under this Section 13.3 and setting forth the additional
amount or amounts to be paid to it hereunder  shall be conclusive in the absence
of manifest error. In determining such amount,  such Bank may use any reasonable
averaging and attribution methods.

     SECTION  13.4.   Adjusted  Base  Rate  Tranche   Substituted  for  Affected
Eurodollar  Tranche.  If (a) the  obligation of any Bank to fund or maintain any
portion of any Loan subject to a Eurodollar  Tranche has been suspended pursuant
to Section 13.2 or (b) any Bank has demanded compensation under Section 13.3 and
any Borrower shall,  by at least five (5) Eurodollar  Business Days prior notice
to such Bank through the Administrative  Agent, have elected that the provisions
of this Section 13.4 shall apply

                                       68


to such  Bank,  then,  unless and until such Bank  notifies  Borrowers  that the
circumstances  giving  rise to such  suspension  or demand for  compensation  no
longer apply:

     (a) any Tranche  which would  otherwise  be  characterized  by such Bank as
Eurodollar  Tranche  shall  instead be deemed an Adjusted  Base Rate Tranche (on
which  interest  and  principal  shall  be  payable  contemporaneously  with the
unaffected Eurodollar Tranches of the other Banks); and

     (b) after all of its Eurodollar  Tranches have been repaid, all payments of
principal which would otherwise be applied to repay Eurodollar Tranches shall be
applied to repay its Adjusted Base Rate Tranches instead.

     SECTION 13.5.  Capital Adequacy.  If after the date hereof, the adoption of
any applicable law, rule or regulation,  or any change therein, or any change in
the  interpretation or administration  thereof,  by any governmental  authority,
central  bank  or  comparable   agency  charged  with  the   interpretation   or
administration  thereof,  or compliance by any Bank (or its Lending Office) with
any request or directive (whether or not having the force of law), shall:

          (a) impose,  modify or deem applicable any reserve,  special  deposit,
     compensatory loan, deposit  insurance,  capital adequacy,  minimum capital,
     capital  ratio or similar  requirement  against  all or any assets held by,
     deposits or accounts  with,  credit  extended by or to, or  commitments  to
     extend credit or any other acquisition of funds by any Bank (or its Lending
     Office), or impose on any Bank (or its Lending Office) any other condition,
     with  respect  to the  maintenance  by such  Bank of all or any part of its
     Commitments; or

          (b)  subject  any Bank  (or its  Lending  Office)  to,  or  cause  the
     termination or reduction of a previously granted exemption with respect to,
     any Tax with respect to the  maintenance by such Bank of all or any part of
     its Commitments  (other than Taxes assessed against such Bank's overall net
     income);  and the result of any of the foregoing is to increase the cost to
     such Bank (or its Lending  Office) of  maintaining  its  Commitments  or to
     reduce the amount of any sums  received or receivable by it (or its Lending
     Office) under this Agreement or any other Loan Paper, or to reduce the rate
     of return on such Bank's equity in connection with this  Agreement,  as the
     case may be, by an amount which such Bank deems  material then, in any such
     case,  within five (5) days of demand by such Bank (or its Lending  Office)
     (with a copy to  Administrative  Agent),  the  Borrower(s)  which  hold the
     affected  Commitments  shall pay to such Bank (or its Lending  Office) such
     additional  amount  or  amounts  as  will  compensate  such  Bank  for  any
     additional cost,  reduced benefit,  reduced amount received or reduced rate
     of return.  Each Bank will  promptly  notify the affected  Borrower(s)  and
     Administrative  Agent of any  event of  which it has  knowledge,  occurring
     after  the date  hereof,  which  will  entitle  such  Bank to  compensation
     pursuant  to  this  Section  13.5.  A  certificate  of  any  Bank  claiming
     compensation  under this  Section  13.5 and  setting  forth the  additional
     amount or amounts to be paid to it  hereunder  shall be  conclusive  in the
     absence of manifest  error. In determining  such amount,  such Bank may use
     any reasonable averaging and attribution methods.

     Without  limiting  the  foregoing,  in the  event  any  event or  condition
described  in this  Section  13.5  shall  occur or arise  which  relates  to the
maintenance by any Bank of that part of any Commitment which is in excess of its
Commitment  Percentage of the Borrowing Base  applicable to such  Commitment and
then  in  effect,  (such  excess  portion  of  such  Commitment  of any  Bank is
hereinafter  referred to as its  "Surplus  Commitment"),  such Bank shall notify
Administrative  Agent and the affected  Borrower of the occurrence of such event
or the existence of such condition and of the amount of a fee (to be computed on
a per annum basis with  respect to such Bank's  Surplus  Commitment)  which such
Bank  determines  in good faith will  compensate  such Bank for such  additional
cost, reduced benefit, reduced amount received

                                       69


or reduced rate of return.  Within five (5)  Domestic  Business  Days  following
receipt of such  notice,  the affected  Borrower or Borrowers  shall notify such
Bank whether it accepts or rejects such fee (if such Borrower or Borrowers fails
to timely  respond to such notice it will be deemed to have  accepted such fee).
If such  Borrower or Borrowers  rejects such fee, the  applicable  Commitment of
each Bank will be  automatically  and permanently  reduced to the Borrowing Base
applicable to such Commitment and then in effect.  If such Borrower or Borrowers
accepts  such fee,  such fee shall accrue from and after the date of such Bank's
notice and shall be payable in arrears  (based on the daily  average  balance of
such Bank's  Surplus  Commitment)  on the last day of each Fiscal Quarter and on
the  Termination  Date.  Such fee shall be in lieu of any  amounts to which such
Bank would otherwise be entitled in respect of its Surplus  Commitment  pursuant
to the other  provisions  of this  Section  13.5 for the period on and after the
date of such notice unless such Bank determines that such fee is not adequate to
fully  compensate such Bank for any additional cost,  reduced  benefit,  reduced
amount  received  or reduced  rate of return such Bank may  thereafter  incur in
respect  of such  Bank's  Surplus  Commitment.  In that event such Bank shall be
entitled  to such  additional  compensation  to  which  such  Bank is  otherwise
entitled pursuant to this Section 13.5.

     SECTION 13.6.  Taxes.  All amounts  payable by any Borrower  under the Loan
Papers (whether principal, interest, fees, expenses, or otherwise) to or for the
account  of each  Bank  shall  be  paid  in  full,  free  of any  deductions  or
withholdings  for or on account of any Taxes.  If any Borrower is  prohibited by
law from paying any such amount free of any such  deductions  and  withholdings,
then (at the same  time and in the same  manner  that  such  original  amount is
otherwise  due  under the Loan  Papers)  such  Borrower  shall pay to or for the
account of such Bank such  additional  amount as may be  necessary in order that
the actual amount received by such Bank after deduction and/or  withholding (and
after payment of any  additional  Taxes due as a  consequence  of the payment of
such  additional  amount,  and so on) will equal the amount such Bank would have
received if such deduction or withholding were not made.

     SECTION 13.7. Discretion of Banks as to Manner of Funding.  Notwithstanding
any provisions of this Agreement to the contrary, each Bank shall be entitled to
fund and  maintain  its  funding  of all or any part of its  Commitments  in any
manner it sees fit, it being understood,  however, that for the purposes of this
Agreement  all  determinations  hereunder  shall  be made as if  such  Bank  had
actually funded and maintained each Loan subject to a Eurodollar  Tranche during
the  Interest  Period for such Loan  through the  purchase of deposits  having a
maturity  corresponding  to the last day of such Interest  Period and bearing an
interest rate equal to the Adjusted Eurodollar Rate for such Interest Period.


                                   ARTICLE XIV

                                  MISCELLANEOUS

     SECTION 14.1. Notices.  All notices,  requests and other  communications to
any party  hereunder  shall be in  writing  (including  bank wire,  telecopy  or
similar  writing) and shall be given (a) if to Agent or any Bank,  to such party
at its address,  telex or telecopy number set forth on Schedule 1 hereof, or (b)
if to any Borrower or any of its Subsidiaries, at the address, telex or telecopy
number for such  Borrower set forth on the  signature  page hereto or such other
address,  telex or telecopy  number as such party may hereafter  specify for the
purpose by notice to  Administrative  Agent and  Borrowers,  as the case may be.
Each such notice, request or other communication shall be effective (a) if given
by telecopy,  when such telecopy is transmitted to the telecopy number specified
in this Section 14.1 and the  appropriate  answerback  is received or receipt is
otherwise  confirmed,  (b) if given by mail, one (1) Domestic Business Day after
deposit in the mails with first class postage prepaid, addressed as aforesaid or
(c) if given by any other means, when delivered at the address specified in this
Section 14.1; provided that notices to Administrative  Agent under Article II or
XIII shall not be effective until received.

                                       70



     SECTION 14.2.  No Waivers.  No failure or delay by any Agent or any Bank in
exercising  any right,  power or privilege  hereunder or under any Note or other
Loan Paper  shall  operate as a waiver  thereof  nor shall any single or partial
exercise  thereof preclude any other or further exercise thereof or the exercise
of any other right, power or privilege.  The rights and remedies herein provided
shall be cumulative and not exclusive of any rights or remedies  provided by law
or in any of the other Loan Papers.

     SECTION 14.3. Expenses;  Documentary Taxes; Indemnification.  (a) Borrowers
shall pay (i) all  out-of-pocket  expenses of  Administrative  Agent,  including
reasonable fees and disbursements of special counsel for  Administrative  Agent,
in connection  with the  preparation of this Agreement and the other Loan Papers
and, if appropriate,  the recordation of the Loan Papers,  any waiver or consent
hereunder or any amendment  hereof or any Default or alleged  Default  hereunder
and (ii) if an Event of Default occurs,  all out-of-pocket  expenses incurred by
each  Agent and each  Bank,  including  fees and  disbursements  of  counsel  in
connection  with such  Event of Default  and  collection  and other  enforcement
proceedings  resulting  therefrom,  fees of auditors and consultants incurred in
connection therewith and investigation  expenses incurred by each Agent and each
Bank in connection  therewith.  Each Borrower shall  indemnify each Bank against
any Taxes imposed by reason of the  execution and delivery of this  Agreement or
the Notes.

     (b) Each  Borrower  agrees to  indemnify  each Agent and each Bank and hold
each Agent and each Bank  harmless  from and  against  any and all  liabilities,
losses, damages, costs and expenses of any kind (including,  without limitation,
the reasonable fees and disbursements of counsel for each Agent and each Bank in
connection  with  any  investigative,  administrative  or  judicial  proceeding,
whether  or not such Bank  shall be  designated  a party  thereto)  which may be
incurred by any Agent or any Bank  relating to or arising out of this  Agreement
or any actual or proposed use of proceeds of Loans  hereunder;  provided that no
Bank  shall  have  the  right  to be  indemnified  hereunder  for its own  gross
negligence or willful  misconduct,  IT BEING THE INTENTION HEREBY THAT EACH BANK
AND EACH AGENT SHALL BE  INDEMNIFIED  FOR THE  CONSEQUENCES  OF ITS OWN ORDINARY
NEGLIGENCE.
 
     SECTION 14.4.  Right and Sharing of Set-Offs.  (a) Upon the  occurrence and
during the continuance of any Event of Default,  each Bank is hereby  authorized
at any time and from time to time,  to the fullest  extent  permitted by law, to
set off and apply any and all  deposits  (general  or  special,  time or demand,
provisional or final) at any time held and other  indebtedness at any time owing
by such Bank to or for the credit or the account of any Borrower against any and
all of the  obligations  of such Borrower now or hereafter  existing  under this
Agreement  and any Note held by such Bank,  irrespective  of whether or not such
Bank shall have made any demand  under this  Agreement or such Note and although
such obligations may be unmatured.  Each Bank agrees promptly to notify any such
Borrower after any such setoff and application made by such Bank,  provided that
the failure to give such notice shall not affect the validity of such setoff and
application.  The rights of each Bank under this Section 14.4(a) are in addition
to other rights and remedies  (including,  without  limitation,  other rights of
setoff) which such Bank may have.

     (b) Each Bank agrees that if it shall, by exercising any right of setoff or
counterclaim  or otherwise,  receive payment after the occurrence and during the
continuance  of an Event of Default of a proportion of the  aggregate  amount of
principal  and  interest  due with respect to any Loan which is greater than the
proportion  received  by any  other  Bank in  respect  of such  Loan,  the  Bank
receiving   such   proportionately   greater   payment   shall   purchase   such
participations  in the interests in such Loan held by the other Banks,  and such
other adjustments shall be made, as may be required so that all such payments of
principal  and interest  with respect to each Loan held by Banks shall be shared
by Banks ratably in accordance  with their  respective  Commitment  Percentages;
provided that nothing in this Section 14.4 shall

                                       71


impair the right of any Bank to exercise any right of setoff or  counterclaim it
may have and to apply the amount  subject  to such  exercise  to the  payment of
indebtedness of any Borrower other than its indebtedness  under the Loans.  Each
Borrower agrees, to the fullest extent it may effectively do so under applicable
law, that  Participants  may exercise rights of setoff or counterclaim and other
rights  with  respect  to such  participation  as fully as if such  holder  of a
participation  were a direct  creditor  of each  Borrower  in the amount of such
participation.

     SECTION 14.5. Amendments and Waivers. Any provision of this Agreement,  the
Notes or the other  Loan  Papers  may be  amended or waived if, but only if such
amendment or waiver is in writing and is signed by Borrowers and Required  Banks
(and,  if the rights or duties of either  Agent are  affected  thereby,  by such
Agent);  provided that no such  amendment or waiver shall,  unless signed by all
Banks,  (a)  increase  the  Commitments  of any Bank or subject  any Bank to any
additional obligation, (b) forgive any of the principal of or reduce the rate of
interest on any Loan or any fees hereunder,  (c) postpone the date fixed for any
payment of principal of or interest on any Loan or any fees hereunder  including
the Termination Date, (d) change the percentages of the Total Commitment, or the
number of Banks which shall be required for the Banks or any of them to take any
action  under this Section 14.5 or any other  provision of this  Agreement,  (e)
permit any  Borrower to assign any of its rights  hereunder,  (f) amend or waive
any of the provisions of Article IV or the definitions  contained in Section 1.1
applicable  thereto or (g) provide for release or substitution of collateral for
the  Obligations  or any part thereof other than releases  required  pursuant to
sales of  collateral  which are  expressly  permitted  by  Section  9.5  hereof.
Borrower,  Agent and each Bank further acknowledge that any decision by Agent or
any Bank to enter into any amendment, waiver or consent pursuant hereto shall be
made by such  Bank or Agent  in its  sole  discretion,  and in  making  any such
decision  Agent and each such Bank shall be permitted to give due  consideration
to any  credit  or other  relationship  Agent or any such Bank may have with any
Affiliate  of  Borrower,  including,  without  limitation,  any  credit or other
relationship with Patina or any other Unrestricted Subsidiary of Borrower.

     SECTION 14.6. Survival. All representations,  warranties and covenants made
by each Borrower herein or in any certificate or other  instrument  delivered by
it or in its  behalf  under the Loan  Papers  shall be  considered  to have been
relied upon by Banks and shall survive the delivery to Banks of such Loan Papers
or the  extension  of  the  Loans  (or  any  part  thereof),  regardless  of any
investigation made by or on behalf of Banks.

     SECTION 14.7. Limitation on Interest. Regardless of any provision contained
in the Loan Papers, Banks shall never be entitled to receive, collect, or apply,
as interest on the Loans,  any amount in excess of the Maximum  Lawful Rate, and
in the event Banks ever  receive,  collect or apply as interest any such excess,
such amount which would be deemed  excessive  interest shall be deemed a partial
prepayment of principal and treated hereunder as such; and if the Loans are paid
in  full,  any  remaining  excess  shall  promptly  be  paid  to the  applicable
Borrower(s).  In  determining  whether or not the interest paid or payable under
any specific  contingency  exceeds the Maximum  Lawful Rate,  each  Borrower and
Banks shall, to the extent  permitted under applicable law, (a) characterize any
nonprincipal payment as an expense, fee or premium rather than as interest,  (b)
exclude voluntary prepayments and the effects thereof and (c) amortize, prorate,
allocate and spread, in equal parts, the total amount of the interest throughout
the entire  contemplated term of the applicable Notes, so that the interest rate
is the Maximum Lawful Rate  throughout  the entire term of the Notes;  provided,
however,  that if the unpaid principal  balance thereof is paid and performed in
full prior to the end of the full contemplated term thereof, and if the interest
received for the actual period of existence  thereof  exceeds the Maximum Lawful
Rate, Banks shall refund to the applicable Borrower(s) the amount of such excess
and, in such event,  Banks shall not be subject to any penalties provided by any
laws for contracting for, charging,  taking,  reserving or receiving interest in
excess of the Maximum Lawful Rate.

                                       72



     SECTION 14.8.  Invalid  Provisions.  If any provision of the Loan Papers is
held to be  illegal,  invalid,  or  unenforceable  under  present or future laws
effective during the term thereof, such provision shall be fully severable,  the
Loan Papers shall be  construed  and enforced as if such  illegal,  invalid,  or
unenforceable  provision had never  comprised a part thereof,  and the remaining
provisions  thereof  shall  remain  in full  force and  effect  and shall not be
affected by the illegal, invalid, or unenforceable provision or by its severance
therefrom.  Furthermore,  in lieu of such  illegal,  invalid,  or  unenforceable
provision  there  shall be added  automatically  as a part of the Loan  Papers a
provision  as  similar  in  terms to such  illegal,  invalid,  or  unenforceable
provision as may be possible and be legal, valid and enforceable.

     SECTION 14.9. Waiver of Consumer Credit Laws.  Pursuant to Article 15.10(b)
of Chapter 15,  Subtitle 79, Revised Civil Statutes of Texas,  1925, as amended,
each  Borrower  agrees  that such  Chapter  15 shall not govern or in any manner
apply to the Loans.

     SECTION 14.10. Successors and Assigns. (a) Each Loan Paper binds and inures
to the  parties  to it,  any  intended  beneficiary  of it,  and  each of  their
respective  successors and permitted assigns.  No Company may assign or transfer
any rights or  obligations  under any Loan Paper  without  first  obtaining  all
Banks'  consent,  and any purported  assignment  or transfer  without all Banks'
consent is void. No Bank may transfer,  pledge,  assign,  sell any participation
in, or otherwise  encumber its portion of the Obligations except as permitted by
clauses (b) or (c) below.

     (b) Any Bank may (subject to the provisions of this section,  in accordance
with applicable  law, in the ordinary  course of its business,  and at any time)
sell to one or more Persons (each a  "Participant")  participating  interests in
its portion of the Obligations. The selling Bank remains a "Bank" under the Loan
Papers,  the Participant does not become a "Bank" under the Loan Papers, and the
selling Bank's  obligations under the Loan Papers remain unchanged.  The selling
Bank remains  solely  responsible  for the  performance of its  obligations  and
remains the holder of its share of the outstanding  Loans for all purposes under
the Loan Papers.  Each Borrower and each Agent shall continue to deal solely and
directly  with the  selling  Bank in  connection  with that  Bank's  rights  and
obligations under the Loan Papers,  and each Bank must retain the sole right and
responsibility to enforce due obligations of the Companies. Participants have no
rights under the Loan Papers except  certain  voting  rights as provided  below.
Subject to the following,  each Bank may obtain (on behalf of its  Participants)
the benefits of Article XIII with respect to all  participations  in its part of
the  Obligations  outstanding  from  time to time  so  long  as no  Borrower  is
obligated  to pay any amount in excess of the  amount  that would be due to that
Bank under Article XIII calculated as though no  participations  have been made.
No Bank may sell any participating  interest under which the Participant has any
rights to  approve  any  amendment,  modification,  or waiver of any Loan  Paper
except as to matters in Sections 14.5(a) through 14.5(g).

     (c) Each Bank may make  assignments to the Federal  Reserve Bank. Each Bank
may also assign to one or more assignees (each an "Assignee") all or any part of
its rights and  obligations  under the Loan  Papers so long as (i) the  assignor
Bank and Assignee  execute and deliver to each Agent and each Borrower for their
consent and acceptance (that may not be unreasonably withheld) an assignment and
assumption  agreement in substantially the form of Exhibit K (an "Assignment and
Assumption  Agreement")  and pay to  Administrative  Agent a  processing  fee of
$2,500,  (ii) the  Assignee  acquires an identical  percentage  interest in each
Commitment of the assignor Bank and an identical  percentage of the interests in
the  outstanding  Loans held by such  assignor  Bank,  and (iii) the  conditions
(including, without limitation, minimum amounts of the Total Commitment that may
be  assigned  or that must be  retained)  for that  assignment  set forth in the
applicable  Assignment  and Assumption  Agreement are satisfied.  The "Effective
Date" in each Assignment and Assumption  Agreement must (unless a shorter period
is agreeable to each  Borrower  and  Administrative  Agent) be at least five (5)
Domestic  Business  Days after it is executed and delivered by the assignor Bank
and Assignee to Administrative Agent and

                                       73


each Borrower for acceptance.  Once that Assignment and Assumption  Agreement is
accepted by  Administrative  Agent and each Borrower,  then,  from and after the
Effective Date stated in it (i) Assignee  automatically  becomes a party to this
Agreement  and,  to the  extent  provided  in  that  Assignment  and  Assumption
Agreement,  has the rights and obligations of a Bank under the Loan Papers, (ii)
the assignor  Bank, to the extent  provided in that  Assignment  and  Assumption
Agreement,  is  released  from its  obligations  to fund  Borrowings  under this
Agreement and its  reimbursement  obligations  under this  Agreement and, in the
case of an Assignment  and  Assumption  Agreement  covering all of the remaining
portion of the assignor  Bank's  rights and  obligations  under the Loan Papers,
that Bank ceases to be a party to the Loan  Papers,  (iii) each  Borrower  shall
execute and deliver to the assignor Bank and Assignee the  appropriate  Notes in
accordance with this Agreement following the transfer, (iv) upon delivery of the
Notes under  clause  (iii)  preceding,  the  assignor  Bank shall return to each
Borrower all Notes previously  delivered to that Bank under this Agreement,  and
(v)  Schedule 1 is  automatically  deemed to be  amended  to  reflect  the name,
address,  telecopy  number,  and  Commitment(s)  of Assignee  and the  remaining
Commitment(s)  (if any) of the assignor  Bank,  and  Administrative  Agent shall
prepare  and  circulate  to each  Borrower  and  Banks  an  amended  Schedule  1
reflecting those changes.

     SECTION  14.11.  TEXAS LAW.  THIS  AGREEMENT,  EACH NOTE AND THE OTHER LOAN
PAPERS  HAVE  BEEN  EXECUTED  AND  DELIVERED  IN THE STATE OF TEXAS AND SHALL BE
CONSTRUED IN ACCORDANCE  WITH AND GOVERNED BY THE LAWS OF THE STATE OF TEXAS AND
THE LAWS OF THE UNITED STATES OF AMERICA,  EXCEPT TO THE EXTENT THAT THE LAWS OF
ANY STATE IN WHICH ANY  PROPERTY  INTENDED AS SECURITY  FOR THE  OBLIGATIONS  IS
LOCATED NECESSARILY GOVERN (A) THE PERFECTION AND PRIORITY OF THE LIENS IN FAVOR
OF AGENT AND BANKS WITH  RESPECT TO SUCH  PROPERTY,  AND (B) THE EXERCISE OF ANY
REMEDIES (INCLUDING FORECLOSURE) WITH RESPECT TO SUCH PROPERTY.

     SECTION 14.12.  Consent to  Jurisdiction;  Waiver of  Immunities.  (a) Each
Borrower hereby  irrevocably  submits to the  jurisdiction of any Texas State or
Federal  court  sitting  in the  Northern  District  of Texas over any action or
proceeding  arising  out of or  relating  to this  Agreement  or any other  Loan
Papers,  and each Borrower hereby  irrevocably agrees that all claims in respect
of such action or proceeding  may be heard and determined in such Texas State or
Federal court. Each Borrower hereby irrevocably appoints The Corporation Company
(the  "Process  Agent"),  with an  office on the date  hereof at 1675  Broadway,
Denver,  Colorado  80202,  as its agent to  receive  on behalf of each  Borrower
proper  service of copies of the summons  and  complaint  and any other  process
which  may be made by  mailing  or  delivering  a copy of such  process  to each
Borrower (as  applicable)  in care of the Process  Agent at the Process  Agent's
above address,  and each Borrower hereby irrevocably  authorizes and directs the
Process Agent to accept such service on their behalf.  As an alternative  method
of service,  each Borrower also  irrevocably  consents to the service of any and
all  process in any such action or  proceeding  by the mailing of copies of such
process to each Borrower at its  respective  address  specified in Section 14.1.
Each Borrower agree that a final judgment on any such action or proceeding shall
be conclusive and may be enforced in other jurisdictions by suit on the judgment
or in any other manner provided by law.

     (b) Nothing in this Section  14.12 shall affect any right of Banks to serve
legal  process in any other  manner  permitted by law or affect the right of any
Bank to bring any action or  proceeding  against  any  Borrower  or any of their
Subsidiaries or their properties in the courts of any other jurisdictions.


                                       74


     (c) To the extent  that any  Borrower  has or  hereafter  may  acquire  any
immunity  from  jurisdiction  of any  court or from any legal  process  (whether
through service or notice,  attachment  prior to judgment,  attachment in aid of
execution,  execution or otherwise) with respect to itself or its property, such
Borrower hereby  irrevocably  waives such immunity in respect of its obligations
under this Agreement and the other Loan Papers.

     SECTION 14.13. Counterparts; Effectiveness. This Agreement may be signed in
any number of  counterparts,  each of which shall be an original,  with the same
effect as if the  signatures  thereto and hereto were upon the same  instrument.
This  Agreement  shall become  effective  when  Administrative  Agent shall have
received counterparts hereof signed by all of the parties hereto or, in the case
of any Bank as to which an executed  counterpart  shall not have been  received,
Administrative   Agent  shall  have  received   telegraphic   or  other  written
confirmation from such Bank of execution of a counterpart hereof by such Bank.

     SECTION 14.14. No Third Party Beneficiaries.  It is expressly intended that
there  shall be no  third  party  beneficiaries  of the  covenants,  agreements,
representations  or warranties  herein  contained  other than  Participants  and
Assignees  permitted  pursuant to Section 14.10 and Affiliates of any Bank which
hold any part of the Obligations.

     SECTION 14.15. COMPLETE AGREEMENT. THIS AGREEMENT AND THE OTHER LOAN PAPERS
COLLECTIVELY  REPRESENT  THE FINAL  AGREEMENT  BY AND AMONG  BANKS,  AGENTS  AND
BORROWERS AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS,  OR
SUBSEQUENT  ORAL  AGREEMENTS  OF  BANKS,  AGENTS  AND  BORROWERS.  THERE  ARE NO
UNWRITTEN ORAL AGREEMENTS BETWEEN BANKS, AGENTS AND BORROWERS.

     SECTION 14.16.  WAIVER OF JURY TRIAL. EACH BORROWER,  AGENT AND BANK HEREBY
IRREVOCABLY  AND  UNCONDITIONALLY  WAIVE  TRIAL BY JURY IN ANY  LEGAL  ACTION OR
PROCEEDING  RELATING TO THIS  AGREEMENT  OR ANY OF THE OTHER LOAN PAPERS AND FOR
ANY COUNTERCLAIM THEREIN.

                  (Remainder of Page left intentionally blank)

                                       75



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

BORROWERS:

PATINA OIL & GAS CORPORATION,
a Delaware corporation


By:/s/ David J. Kornder
- -----------------------
David J. Kornder,
Vice President

1625 Broadway
Denver, Colorado 80202
Attn:  David J. Kornder
Telecopy No.:  (303) 592-8600

with a copy to:

Thomas J. Edelman
595 Madison Avenue
27th Floor
New York, New York 10022
Telecopy No.:  212-888-6877


SOCO WATTENBERG CORPORATION,
a Delaware corporation


By: /s/ David J. Kornder
- ------------------------
David J. Kornder,
Vice President

777 Main Street, Suite 2500
Fort Worth, Texas  76102
Attn:  James H. Shonsey
Telecopy No.:  817-882-5895

with a copy to:

Thomas J. Edelman
595 Madison Avenue
27th Floor
New York, New York 10022
Telecopy No.:  212-888-6877



                                       76


GERRITY OIL & GAS CORPORATION,
a Delaware corporation


By: /s/ David J. Kornder
- ------------------------
David J. Kornder,
Vice President

1625 Broadway
Denver, Colorado  80202
Attn:  David Kornder
Telecopy No.:  (303) 592-8600

with a copy to:

Thomas J. Edelman
595 Madison Avenue
27th Floor
New York, New York 10022
Telecopy No.:  212-888-6877


BANKS:

TEXAS COMMERCE BANK NATIONAL ASSOCIATION


By: /s/ Timothy E. Perry
- ------------------------
Timothy E. Perry, Senior Vice President


NATIONSBANK OF TEXAS, N.A.


By: /s/ J. Scott Fowler
- -----------------------
J. Scott Fowler, Vice President

CIBC, Inc.


By: 
Its: 

CREDIT LYONNAIS NEW YORK BRANCH


By: /s/ Pascal Poupelle
- -----------------------
Pascal Poupelle, Senior Vice President


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WELLS FARGO BANK, N.A.


By: /s/ Charles D. Kirkham
- --------------------------
Charles D. Kirkham, Vice President


ADMINISTRATIVE AGENT:

TEXAS COMMERCE BANK NATIONAL ASSOCIATION


By: /s/ Timothy E. Perry
- ------------------------
Timothy E. Perry, Senior Vice President


DOCUMENTARY AGENT:

NATIONSBANK OF TEXAS, N.A.


By: /s/ J. Scott Fowler
- -----------------------
J. Scott Fowler, Vice President

CO-AGENTS:

CIBC, INC.


By: 
Its: 

CREDIT LYONNAIS NEW YORK BRANCH


By: /s/ Pascal Poupelle
- -----------------------
Pascal Poupelle, Senior Vice President

WELLS FARGO BANK, N.A.


By: /s/ Charles D. Kirkham
- --------------------------
Charles D. Kirkham, Vice President







                                       78