CREDIT AGREEMENT


                                     BETWEEN


                          PLAYA MINERALS & ENERGY, INC.


                                       AND


                             EQUIVA TRADING COMPANY



                                November 14, 2000



                             TERM LOAN OF $1,700,000












                                TABLE OF CONTENTS
                                                                            Page

ARTICLE 1.        DEFINITIONS AND INTERPRETATION                               1
         1.1      Terms Defined Above                                          1
         1.2      Additional Defined Terms                                     1
         1.3      Undefined Financial Accounting Terms                         8
         1.4      References                                                   8
         1.5      Articles and Sections                                        8
         1.6      Number and Gender                                            8
         1.7      Incorporation of Exhibits                                    9

ARTICLE 2.        TERMS OF FACILITY                                            9
         2.1      Term Loan                                                    9
         2.2      Use of Loan Proceeds                                         9
         2.3      Interest                                                     9
         2.5      Outstanding Amounts                                         10
         2.6      Time Place and Method of Payments                           10
         2.7      Voluntary Prepayments of Loans                              10
         2.8      Security Interest in Accounts: Right of Offset              10
         2.9      General Provisions Relating to Interest                     11

ARTICLE 3.        CONDITIONS                                                  12
         3.1      Receipt of Loan Documents and Other Items                   12

ARTICLE 4.        REPRESENTATIONS AND WARRANTIES                              14
         4.1      Due Authorization                                           14
         4.2      Corporate Existence                                         14
         4.3      Valid and Binding Obligations                               15
         4.4      Security Instruments                                        15
         4.5      Title to Assets                                             15
         4.6      Scope and Accuracy of Financial Statements                  15
         4.7      No Material Misstatements                                   15
         4.8      Liabilities Litigation. and Restrictions                    15
         4.9      Authorizations; Consents                                    15
         4.10     Compliance with Laws                                        16
         4.11     ERISA                                                       16
         4.12     Environmental Laws                                          16
         4.13     Investment Company Compliance                               16
         4.14     Public Utility Holding Company Act Compliance               16
         4.15     Proper Filing of Tax Returns; Payment of Taxes Due          16
         4.16     Refunds                                                     17
         4.17     Intellectual Property                                       17
         4.18     Casualties or Taking of Property                            17
         4.19     Location of Borrower                                        17
         4.20     Subsidiaries                                                17

ARTICLE 5.        AFFIRMATIVE COVENANTS                                       17
         5.1      Maintenance and Access to Records                           17
         5.2      Quarterly Financial Statements; Compliance Certificates     18
         5.3      Annual Financial Statements                                 18
         5.4      Oil and Gas Reserve Reports                                 18
         5.5      Title Opinions; Title Defects                               18
         5.6      Notices of Certain Events                                   19
         5.7      Additional Information                                      20
         5.8      Compliance with Laws                                        20
         5.9      Payment of Assessments and Charges                          20
         5.10     Maintenance of Corporate Existence and Good Standing        20
         5.11     Payment of Notes; Performance of Obligations                20
         5.12     Further Assurances                                          20
         5.13     Subsequent Fees and Expenses of Lender                      21
         5.14     Operation of Oil and Gas Properties                         21
         5.15     Maintenance and Inspection of Properties                    21
         5.16     Maintenance of Insurance                                    21
         5.17     Indemnification                                             22

ARTICLE 6.        NEGATNE COVENANTS                                           23
         6.1      Indebtedness                                                23
         6.2      Contingent Obligations                                      23
         6.3      Liens                                                       23
         6.4      Sales of Assets                                             23
         6.5      Leasebacks                                                  24
         6.6      Loans or Advances                                           24
         6.7      Investments                                                 24
         6.8      Dividends and Distributions                                 24
         6.9      Changes in Corporate Structure                              24
         6.10     Transactions with Affiliates                                24
         6.11     Lines of Business                                           24
         6.12     Plan Obligations                                            25
         6.13     Current Ratio                                               25
         6.14     Debt Coverage Ratio                                         25

ARTICLE 7.        EVENTS OF DEFAULT                                           25
         7.1      Enumeration of Events of Default                            25
         7.2      Remedies                                                    27

ARTICLE 8.        MISCELLANEOUS                                               27
         8.1      Transfers; Participations                                   27
         8.2      Survival of Representations; Warranties, and Covenants      28
         8.3      Notices and Other Communications                            28
         8.4      Parties in Interest                                         28
         8.5      Rights of Third Parties                                     29
         8.6      Renewals; Extensions                                        29
         8.7      No Waiver; Rights Cumulative                                29
         8.8      Survival Upon Unenforceability                              29
         8.9      Amendments; Waivers                                         29
         8.10     Controlling Agreement                                       29
         8.11     Disposition of Collateral                                   29
         8.12     Governing Law                                               30
         8.13     Jurisdiction And Venue                                      30
         8.14     Waiver of Rights To Jury Trial                              30
         8.15     Entire Agreement                                            30
         8.16     Counterparts                                                31









                                LIST OF EXHIBITS



Exhibit I                  -                Form of Note
Exhibit III                -                Form of Compliance Certificate
Exhibit V                  -                Disclosures





                                CREDIT AGREEMENT

     THIS  CREDIT  AGREEMENT  is made and  entered  into as of this  14th day of
November 2000, by and between PLAYA MINERALS & ENERGY, INC., a Texas corporation
(the  "Borrower"),  and  EQUIVA  TRADING  COMPANY,  a general  partnership  (the
"Lender").

                              W I T N E S S E T H:

     In consideration of the mutual covenants and agreements  herein  contained,
the Borrower and the Lender hereby agree as follows:

                                   ARTICLE 1.

                         DEFINITIONS AND INTERPRETATION

     1.1  Terms  Defined  Above.  As used in this  Credit  Agreement,  the terms
"Borrower" and "Lender" shall have the meaning assigned to them hereinabove.

     1.2 Additional Defined Terms. As used in this Credit Agreement, each of the
following terms shall have the meaning assigned thereto in this Section,  unless
the context otherwise requires:

          "Affiliate" shall mean any Person directly or indirectly  controlling,
     or under common  control with,  the Borrower and includes any Subsidiary of
     the Borrower and any "affiliate" of the Borrower within the meaning of Reg.
     ss.240.12b-2  of the  Securities  Exchange  Act of 1934,  as amended,  with
     "control,"  as used in this  definition,  meaning  possession,  directly or
     indirectly,  of the power to direct or cause the  direction of  management,
     policies or action through ownership of voting securities, contract, voting
     trust,  or membership in management or in the group  appointing or electing
     management or otherwise through formal or informal arrangements or business
     relationships.

          "Agreement"  shall mean this Credit  Agreement,  as it may be amended,
     supplemented, or restated from time to time.

          "Business Day" shall mean a day other than a Saturday,  Sunday,  legal
     holiday for commercial  banks under the laws of the State of Texas,  or any
     other day when banking is suspended in the State of Texas.

          "Closing Date" shall mean the effective date of this Agreement.

          "Collateral"  shall  mean  the  Mortgaged  Properties  and  any  other
     Property now or at any time used or intended as security for the payment or
     performance of all or any portion of the Obligations.




          "Commonly  Controlled  Entity"  shall mean any  Person  which is under
     common  control  with the  Borrower  within the meaning of Section  4001 of
     ERISA.

          "Contingent  Obligation" shall mean, as to any Person,  any obligation
     of such Person  guaranteeing or in effect  guaranteeing  any  Indebtedness,
     leases,  dividends,  or other obligations of any other Person (for purposes
     of this definition, a "primary obligation") in any manner, whether directly
     or  indirectly,  including,  without  limitation,  any  obligation  of such
     Person,  regardless  of  whether  such  obligation  is  contingent,  (a) to
     purchase  any primary  obligation  or any Property  constituting  direct or
     indirect  security  therefor,  (b) to advance  or supply  funds (i) for the
     purchase or payment of any primary obligation,  or (ii) to maintain working
     or equity capital of any other Person in respect of any primary obligation,
     or otherwise to maintain the net worth or solvency of any other Person, (c)
     to purchase  Property,  securities or services primarily for the purpose of
     assuring the owner of any primary  obligation  of the ability of the Person
     primarily liable for such primary  obligation to make payment  thereof,  or
     (d)  otherwise  to assure or hold  harmless  the owner of any such  primary
     obligation  against  loss  in  respect  thereof,  with  the  amount  of any
     Contingent   Obligation   being  deemed  to  be  equal  to  the  stated  or
     determinable  amount of the  primary  obligation  in  respect of which such
     Contingent  Obligation  is made or,  if not  stated  or  determinable,  the
     maximum reasonably  anticipated  liability in respect thereof as determined
     by such Person in good faith.

          "Current Assets" shall mean all assets which would, in accordance with
     GAAP,  be included as current  assets on a balance sheet of the Borrower as
     of the date of calculation, plus unused availability under this facility.

          "Current  Liabilities"  shall mean all  liabilities  which  would,  in
     accordance  with GAAP , be  included  as current  liabilities  on a balance
     sheet of the  Borrower as of the date of  calculation,  but  excluding  the
     current maturities of long term debt.

          "Default"  shall mean any event or occurrence  which with the lapse of
     time or the giving of notice or both would become an Event of Default.

          "Default  Rate" shall mean a per annum interest rate equal to eighteen
     percent (18%) per annum, but in no event exceeding the Highest Lawful Rate.

          "Dollars" and "$" shall mean dollars in lawful  currency of the United
     States of America.

          "EBITDA" shall mean,  for any period,  net income for such period plus
     interest   expense,   federal  and  state   income   taxes,   depreciation,
     amortization,  and other non-cash expenses,  plus scheduled  Borrowing Base
     reductions for such period deducted in the  determination of net income for
     such period.

          "Environmental  Complaint"  shall mean any written or oral  complaint,
     order,  directive,  claim,  citation,  notice  of  environmental  report or
     investigation,  or other notice by any Governmental  Authority or any other

                                       2




     Person  with  respect  to (a)  air  emissions,  (b)  spills,  releases,  or
     discharges to soils,  any  improvements  located  thereon,  surface  water,
     groundwater,  or the sewer, septic,  waste treatment,  storage, or disposal
     systems  servicing any Property of the Borrower,  (c) solid or liquid waste
     disposal, (d) the use, generation, storage, transportation,  or disposal of
     any Hazardous  Substance,  or (e) other  environmental,  health,  or safety
     matters  affecting  any Property of the Borrower or the business  conducted
     thereon.

          "Environmental Laws" shall mean (a) the following federal laws as they
     may be cited, referenced, and amended from time to time: the Clean Air Act,
     the Clean  Water  Act,  the Safe  Drinking  Water  Act,  the  Comprehensive
     Environmental  Response,  Compensation  and Liability  Act, the  Endangered
     Species Act, the Resource  Conservation  and Recovery Act, the Occupational
     Safety and Health Act,  the  Hazardous  Materials  Transportation  Act, the
     Superfund  Amendments  and  Reauthorization  Act, and the Toxic  Substances
     Control  Act; (b) any and all "  equivalent  environmental  statutes of any
     state in which Property of the Borrower is situated,  as they may be cited,
     referenced  and  amended  from time to time;  (c) any rules or  regulations
     promulgated  under or adopted pursuant to the above federal and state laws;
     and ( d) any other  equivalent  federal,  state,  or local  statute  or any
     requirement,  rule, regulation,  code, ordinance, or order adopted pursuant
     thereto, including,  without limitation,  those relating to the generation,
     transportation,  treatment,  storage,  recycling,  disposal,  handling,  or
     release of Hazardous Substances.

          "ERISA"  shall mean the  Employee  Retirement  Income  Security Act of
     1974,  as amended from time to time,  and the  regulations  thereunder  and
     interpretations thereof.

          "Event of Default"  shall mean any of the events  specified in Section
     7.1.

          "Final Maturity" shall mean October 31, 2003.

          "Financial   Statements"   shall  mean  statements  of  the  financial
     condition  of the  Borrower  as at the  point  in time  and for the  period
     indicated and consisting of at least a balance sheet and related statements
     of operations,  common stock and other stockholders' equity, and cash flows
     for the  Borrower  and,  when  required by  applicable  provisions  of this
     Agreement to be audited,  accompanied by the unqualified certification of a
     nationally-recognized  firm of independent  certified public accountants or
     other independent certified public accountants acceptable to the Lender and
     footnotes  to any of the  foregoing,  all of which  shall be  prepared in "
     accordance  with GAAP  consistently  applied and in  comparative  form with
     respect to the corresponding period of the preceding fiscal period.

          "GAAP" shall mean generally accepted accounting principles established
     by the Financial  Accounting  Standards Board or the American  Institute of
     Certified  Public  Accountants and in effect in the United States from time
     to time.

          "Governmental Authority" shall mean any nation, country, commonwealth,
     territory,  government,  state,  county,  parish,  municipality,  or  other



                                       3




     political  subdivision and any entity  exercising  executive,  legislative,
     judicial,  regulatory,  or  administrative  functions of or  pertaining  to
     government.

          "Hazardous Substances" shall mean flammables,  explosives, radioactive
     materials, hazardous wastes, asbestos, or any material containing asbestos,
     polychlorinated  biphenyls (PCBs),  toxic substances or related  materials,
     petroleum,  petroleum products,  associated oil or natural gas exploration,
     production, and development wastes, or any substances defined as "hazardous
     substances,"   "hazardous   materials,"   "hazardous   wastes,"  or  "toxic
     substances" under the Comprehensive  Environmental  Response,  Compensation
     and Liability Act, as amended, the Superfund Amendments and Reauthorization
     Act, as amended,  the Hazardous  Materials  Transportation Act, as amended,
     the  Resource   Conservation  and  Recovery  Act,  as  amended,  the  Toxic
     Substances  Control Act, as amended,  or any other law or regulation now or
     hereafter enacted or promulgated by any Governmental Authority.

          "Highest  Lawful  Rate" shall mean the maximum  non-usurious  interest
     rate, if any (or, if the context so requires,  an amount calculated at such
     rate),  that at any time or from time to time may be contracted for, taken,
     reserved,  charged, or received under applicable laws of the State of Texas
     or the United States of America,  whichever authorizes the greater rate, as
     such laws are  presently in effect or, to the extent  allowed by applicable
     law,  as such  laws may  hereafter  be in effect  and which  allow a higher
     maximum non-usurious interest rate than such laws now allow.

          "Indebtedness" shall mean, as to any Person, without duplication,  (a)
     all liabilities  (excluding  reserves for deferred  income taxes,  deferred
     compensation liabilities, and other deferred liabilities and credits) which
     in accordance with GAAP would be included in determining  total liabilities
     as shown on the liability side of a balance sheet,  (b) all  obligations of
     such Person evidenced by bonds,  debentures,  promissory  notes, or similar
     evidences of  indebtedness,  (c) all other  indebtedness of such Person for
     borrowed money,  and (d) all obligations of others,  to the extent any such
     obligation  is secured by a Lien on the assets of such  Person  (whether or
     not such Person has assumed or become liable for the obligation  secured by
     such Lien).

          "Insolvency  Proceeding" shall mean application  (whether voluntary or
     instituted by another  Person) for or the consent to the  appointment  of a
     receiver, trustee,  conservator,  custodian, or liquidator of any Person or
     of all or a substantial part of the Property of such Person,  or the filing
     of  a  petition  (whether   voluntary  or  instituted  by  another  Person)
     commencing  a case  under  Title  11 of the  United  States  Code,  seeking
     liquidation,  reorganization,  or  rearrangement or taking advantage of any
     bankruptcy, insolvency, debtor's relief, or other similar law of the United
     States, the State of Texas, or any other jurisdiction.

          "Intellectual  Property"  shall  mean  patents,  patent  applications,
     trademarks, tradenames, copyrights, technology, know-how, and processes.


                                       4




          "Investment" in any Person shall mean any stock,  bond, note, or other
     evidence of  Indebtedness,  or any other security (other than current trade
     and customer  accounts) of,  investment or partnership  interest in or loan
     to, such Person shall mean any interest in Property  securing an obligation
     owed to, or a claim  by, a Person  other  than the owner of such  Property,
     whether such  interest is based on common law,  statute,  or contract,  and
     including,  but not limited to, the lien, or security interest arising from
     a  mortgage,  ship  mortgage,  encumbrance,   pledge,  security  agreement,
     conditional sale or trust receipt, or a lease, consignment, or bailment for
     security purposes (other than true leases or true  consignments),  liens of
     mechanics,  materialmen,  and artisans,  maritime  liens and  reservations,
     exceptions, encroachments, easements, rights of way, covenants, conditions,
     restrictions, leases, and other title exceptions and encumbrances affecting
     Property which secure an obligation  owed to, or a claim by, a Person other
     than the owner of such  Property  (for the purpose of this  Agreement,  the
     Borrower  shall be  deemed  to be the  owner of any  Property  which it has
     acquired or holds subject to a conditional sale agreement, financing lease,
     or other  arrangement  pursuant  to which  title to the  Property  has been
     retained by or vested in some other Person for security purposes),  and the
     filing or recording of any financing statement or other security instrument
     in any public office.

          "Limitation  Period"  shall mean any period  while any amount  remains
     owing on the Note and interest on such amount, calculated at the applicable
     interest rate,  plus any fees or other sums payable under any Loan Document
     and deemed to be interest under  applicable law, would exceed the amount of
     interest  which would accrue at the Highest Lawful Rate shall mean any loan
     made by the Lender to or for the benefit of the  Borrower  pursuant to this
     Agreement.

          "Loan  Balance"  shall mean, at any time,  the  outstanding  principal
     balance of the Note at such time.

          "Loan  Documents"  shall mean this  Agreement,  the Note, the Security
     Instruments,  and all other  documents  and  instruments  now or  hereafter
     delivered  pursuant to the terms of or in connection  with this  Agreement,
     the Note or the Security  Instruments,  and all renewals and extensions of,
     amendments  and  supplements  to,  and  restatements  of, any or all of the
     foregoing from time to time in effect.

          "Material  Adverse  Effect"  shall mean (a) any adverse  effect on the
     business,  operations,  properties,  condition (financial or otherwise), or
     prospects of the Borrower,  which materially increases the risk that any of
     the  Obligations  will not be repaid as and when due,  or (b) any  material
     adverse effect upon the Collateral.

          "Mortgaged  Properties"  shall mean all Oil and Gas  Properties of the
     Borrower  subject to a perfected Lien in favor of the Lender,  subject only
     to  Permitted  Liens,  as  security  for the  Obligations  shall  mean  the
     promissory  note of the Borrower,  in the form  attached  hereto as Exhibit
     8.16, together with all renewals, extensions for any period, increases, and
     rearrangements thereof.



                                       5





          "Obligations"  shall mean, without  duplication,  (a) all Indebtedness
     evidenced by the Note, (b ) all  obligations  and  liabilities  whether now
     existing or hereafter  arising of the Borrower to the Lender in  connection
     with any  Lease  Purchase  Agreement,  and (c) all  other  obligations  and
     liabilities  of the  Borrower to the  Lender,  now  existing  or  hereafter
     incurred,  under,  arising out of or in connection  with any Loan Document,
     and to the  extent  that any of the  foregoing  includes  or  refers to the
     payment of amounts deemed or constituting interest, only so much thereof as
     shall have accrued,  been earned and which remains  unpaid at each relevant
     time of determination.

          "Oil and Gas Properties" shall mean fee, leasehold, or other interests
     in or under  mineral  estates  or oil,  gas,  and other  liquid or  gaseous
     hydrocarbon leases with respect to Properties situated in the United States
     or  offshore  from  any  State of the  United  States,  including,  without
     limitation,  overriding  royalty and royalty  interests,  leasehold  estate
     interests, net profits interests, production payment interests, and mineral
     fee interests, together with contracts executed in connection therewith and
     all tenements,  hereditaments,  appurtenances and Properties  appertaining,
     belonging, affixed, or incidental thereto.

          "Permitted  Liens"  shall  mean (a) Liens for taxes,  assessments,  or
     other governmental  charges or levies not yet due or which (if foreclosure,
     distraint,   sale,  or  other  similar  proceedings  shall  not  have  been
     initiated) are being  contested in good faith by  appropriate  proceedings,
     and such reserve as may be required by GAAP shall have been made  therefor,
     (b) Liens in connection with workers' compensation,  unemployment insurance
     or other  social  security  (other  than Liens  created by Section  4068 of
     ERISA),  old-age pension, or public liability obligations which are not yet
     due or which are being contested in good faith by appropriate  proceedings,
     if such  reserve as may be required by GAAP shall have been made  therefor,
     (c)  Liens  in  favor  of  vendors,  carriers,   warehousemen,   repairmen,
     mechanics, workmen, materialmen,  construction, or similar Liens arising by
     operation  of law  in  the  ordinary  course  of  business  in  respect  of
     obligations  which  are not yet due or which are  being  contested  in good
     faith by  appropriate  proceedings,  if such  reserve as may be required by
     GAAP shall have been made  therefor,  (d) Liens in favor of  operators  and
     non-operators  under  joint  operating  agreements  or similar  contractual
     arrangements arising in the ordinary course of the business of the Borrower
     to  secure  amounts  owing,  which  amounts  are not  yet due or are  being
     contested in good faith by appropriate proceedings,  if such reserve as may
     be  required  by GAAP  shall  have been  made  therefor,  (e)  Liens  under
     production sales agreements,  division orders,  operating  agreements,  and
     other  agreements  customary in the oil and gas  business  for  processing,
     producing,  and selling hydrocarbons  securing obligations not constituting
     indebtedness  and  provided  that such Liens do not secure  obligations  to
     deliver  hydrocarbons  at some future date without  receiving  full payment
     therefor  within  90  days  of  delivery,  (f)  easements,  rights  of way,
     restrictions,  and other  similar  encumbrances,  and minor  defects in the
     chain of title which are customarily  accepted in the oil and gas financing
     industry, none of which interfere with the ordinary conduct of the business
     of the Borrower or materially detract from the value or use of the Property
     to which they  apply,  and (g) Liens in favor of the Lender and other Liens
     expressly permitted under the Security Instruments.


                                       6





          "Person" shall mean an individual,  corporation,  partnership,  trust,
     unincorporated   organization,   government,   any   agency  or   political
     subdivision of any  government,  or any other form of entity shall mean, at
     any time,  any  employee  benefit  plan  which is  covered  by ERISA and in
     respect of which the Borrower or any Commonly  Controlled Entity is (or, if
     such plan were  terminated at such time,  would under Section 4069 of ERISA
     be deemed to be) an "employer" as defined in Section 3(5) of ERISA.

          "Principal  Office" shall mean the  principal  office of the Lender in
     Houston, Texas, presently located at Suite 3200, 500 Dallas, Houston, Texas
     77002.

          "Property"  shall mean any  interest in any kind of property or asset,
     whether real, personal or mixed, tangible or intangible.

          "Regulatory Change" shall mean the passage, adoption,  institution, or
     amendment of any  federal,  state,  local,  or foreign  Requirement  of Law
     (including,  without  limitation,  Regulation  D),  or any  interpretation,
     directive,  or  request  (whether  or not  having  the force of law) of any
     Governmental  Authority or monetary authority charged with the enforcement,
     interpretation, or administration thereof, occurring after the Closing Date
     and applying to a class of banks including the Lender.

          "Release of  Hazardous  Substances"  shall mean any  emission,  spill,
     release, disposal, or discharge,  except in accordance with a valid permit,
     license,  certificate,  or approval of the relevant Governmental Authority,
     of any  Hazardous  Substance  into or upon  (a) the air,  (b)  soils or any
     improvements located thereon, (c) surface water or groundwater,  or (d) the
     sewer or septic system, or the waste treatment, storage, or disposal system
     servicing any Property of the Borrower.

          "Requirement of Law" shall mean, as to any Person,  the certificate or
     articles of incorporation and by-laws or other  organizational or governing
     documents of such Person, and any applicable law, treaty, ordinance, order,
     judgment,  rule,  decree,  regulation,  or  determination of an arbitrator,
     court, or other  Governmental  Authority,  including,  without  limitation,
     rules,  regulations,   orders,  and  requirements  for  permits,  licenses,
     registrations, approvals, or authorizations, in each case as such now exist
     or may be  hereafter  amended and are  applicable  to or binding  upon such
     Person  or  any of its  Property  or to  which  such  Person  or any of its
     Property is subject.

          "Reserve  Report"  shall  mean each  report  delivered  to the  Lender
     pursuant to Section 5.4.

          "Responsible  Officer"  shall mean,  as to any Person,  its  President
     Chief Executive Officer or any Vice President.

          "Security  Instruments" shall mean the security  instruments  executed
     and delivered in satisfaction of the condition set forth in Section 3.1(f),
     and all other  documents and  instruments  at any time executed as security


                                       7




    for all or any  portion  of the  Obligations,  as such  instruments  may be
     amended, restated, or supplemented from time to time.

          "Subsidiary"  shall mean,  as to any Person,  a  corporation  of which
     shares of stock having ordinary voting power ( other than stock having such
     power only by reason of the happening of a contingency) to elect a majority
     of the board of directors or other managers of such  corporation are at the
     time owned, or the management of which is otherwise controlled, directly or
     indirectly through one or more intermediaries, or both, by such Person.

          "Superfund  Site" shall mean those sites  listed on the  Environmental
     Protection  Agency National  Priority List and eligible for remedial action
     or any  comparable  state  registries  or list in any  state of the  United
     States.

          "Transferee"  shall  mean any  Person  to which the  Lender  has sold,
     assigned,   transferred,   or  granted  a  participation   in  any  of  the
     Obligations,  as  authorized  pursuant  to  Section  8.1,  and  any  Person
     acquiring, by purchase,  assignment,  transfer, or participation,  from any
     such purchaser,  assignee,  transferee,  or  participant,  any part of such
     Obligations shall mean the Uniform  Commercial Code as from time to time in
     effect in the State of Texas.

          1.3  Undefined   Financial   Accounting  Terms.   Undefined  financial
accounting  terms used in this Agreement  shall be defined  according to GAAP at
the time in effect.

          1.4 References.  References in this Agreement to Exhibit,  Article, or
Section numbers shall be to Exhibits,  Articles,  or Sections of this Agreement,
unless  expressly  stated  to the  contrary.  References  in this  Agreement  to
"hereby,"  "herein,"  "hereinafter,"   "hereinabove,"  "hereinbelow,"  "hereof,"
"hereunder"  and  words of  similar  import  shall be to this  Agreement  in its
entirety and not only to the particular  Exhibit,  Article,  or Section in which
such reference appears.

          1.5 Articles and Sections.  This Agreement,  for convenience only, has
been divided into  Articles and Sections;  and it is understood  that the rights
and other legal  relations of the parties  hereto shall be determined  from this
instrument  as an entirety and without  regard to the  aforesaid  division  into
Articles and Sections and without  regard to headings  prefixed to such Articles
or Sections.

          1.6 Number and Gender. Whenever the context requires, reference herein
made to the single  number  shall be  understood  to  include  the  plural;  and
likewise, the plural shall be understood to include the singular. Definitions of
terms  defined in the  singular  or plural  shall be equally  applicable  to the
plural  or  singular,  as the case may be,  unless  otherwise  indicated.  Words
denoting sex shall be construed to include the  masculine,  feminine and neuter,
when such  construction  is  appropriate;  and  specific  enumeration  shall not
exclude the general but shall be construed as cumulative.



                                       8




          1.7 Incorporation of Exhibits. The Exhibits attached to this Agreement
are incorporated herein and shall be considered a part of this Agreement for all
purposes.

                                   ARTICLE 2.

                                TERMS OF FACILITY

          2.1 Term Loan.

          (a) Upon the terms and conditions  and relying on the  representations
     and  warranties  contained  in  this  Agreement,   the  Lender  agrees,  in
     immediately  available funds at the Principal Office, to or for the benefit
     of the Borrower,  to advance up to  $1,700,000.00 in funds for the purposes
     set forth in this Agreement.

          (b) The Loans shall be made and maintained at the Principal Office and
     shall be evidenced by the Note.

          2.2 Use of Loan  Proceeds.  Proceeds of all Loans shall be used solely
     to finance acquisition and development of Oil and Gas Properties.

          2.3  Interest.  Subject  to the  terms of this  Agreement  (including,
     without limitation, Section 2.9), interest on the Loans shall accrue and be
     payable at a rate of  fourteen  percent  (14%) per annum.  Interest  on all
     Loans shall be  computed on the basis of a year of 365 or 366 days,  as the
     case may be, and actual days elapsed (including the first day but excluding
     the last day) during the period for which  payable.  Interest  provided for
     herein shall be calculated on unpaid sums actually advanced and outstanding
     pursuant  to the terms of this  Agreement  and only for the period from the
     date or  dates  of  such  advances  until  repayment.  Notwithstanding  the
     foregoing,  interest on past-due  principal and, to the extent permitted by
     applicable  law,  past-due  interest,  shall  accrue at the  Default  Rate,
     computed on the basis of a year of 365 or 366 days, as the case may be, and
     actual days elapsed  (including  the first day but  excluding the last day)
     during the period for which  payable,  and shall be payable  upon demand by
     the Lender at any time as to all or any portion of such interest

          2.4 Repayment of Loans and Interest.

          (a)  Principal  and  accrued  and  unpaid  interest  on the  aggregate
     outstanding  Loan Balance shall be due and payable monthly in the amount of
     $58.892.56  commencing on the 20th of January 2001,  and continuing on 20th
     of each  calendar  month  thereafter  while any amount of the Loan  Balance
     remains outstanding.

          (b) Until the Loan is fully repaid,  Borrower shall not (i) change the
     quantity or price in or (ii)  terminate  its contract to sell the crude oil
     produced  from its  interests in the  Horseshoe  Gallup Unit and NE Hogback
     Unit, San Juan County.  New Mexico (NM Interest) to Giant Refining  Company
     (Giant)  without prior  approval  from Lender.  If Borrower does not comply
     with this  obligation,  the Loan  Balance  shall be  immediately  due,  and


                                       9





    Borrower shall  reimburse  Lender for all costs and expenses,  specifically
     including attorneys fees, incurred by Lender in collection of the debt.

          (c) As security for the Loan, Borrower has assigned to Lender payments
     from Giant for crude oil purchased from Borrower's NM Interest. Lender will
     wire transfer to Borrower the assigned  payment  received from Giant,  less
     ten cents per net revenue  interest  barrel and the monthly  amount due for
     principal and interest as provided for by section 2.4(a) above  hereinafter
     referred to as "Residual Assignment Monies".

          (d) To  support  repayment  of  the  Loan,  in  addition  to the  risk
     management  instruments  set  forth in the  Lease  Purchase  Agreement  for
     Borrower's  Gulf of Mexico  production  barrels,  Lender and Borrower  will
     enter into risk management  agreements  covering the New Mexico  production
     that will be purchased by Giant. The risk management  instruments  covering
     the New Mexico Properties are listed in Exhibit VI and will be settled on a
     monthly  basis.   Any  amount  due  Borrower  will  be  added  to  Lender's
     distribution  of Residual  Assignment  Monies due Borrower.  Any amount due
     Lender  will  be  deducted  from  the  monthly   distribution  of  Residual
     Assignment  Monies due  Borrower.  If the amount due Lender is greater than
     the Residual  Assignment Monies, then Lender will directly invoice Borrower
     for any amount in excess of the Residual Assignment Monies.

     2.5  Outstanding  Amounts.  The  liability  for  payment of  principal  and
interest  evidenced by the Note shall be limited to principal  amounts  actually
advanced and outstanding pursuant to this Agreement and interest on such amounts
calculated in accordance with this Agreement.

     2.6 Time, Place, and Method of Payments.  All payments required pursuant to
this Agreement or the Note shall be made in lawful money of the United States of
America and in  immediately  available  funds,  shall be deemed  received by the
Lender on the next Business Day following  receipt if such receipt is after 2:00
p.m.,  Central  Standard or Daylight  Savings  Time,  as the case may be, on any
Business Day, and shall be made at the Principal  Office.  Except as provided to
the contrary herein,  if the due date of any payment hereunder or under the Note
would  otherwise  fall on a day which is not a Business  Day, such date shall be
extended to the next succeeding  Business Day, and interest shall be payable for
any principal so extended for the period of such extension.

     2.7 Voluntary  Prepayments  of Loans.  Subject to applicable  provisions of
this  Agreement,  the Borrower  shall have the right at any time or from time to
time to prepay Loans  without  prepayment  penalty  provided,  however,  (a) the
Borrower shall pay all accrued and unpaid interest on the amounts  prepaid,  and
(b) no such  prepayment  shall serve to postpone the  repayment  when due of any
Obligation.

     2.8  Security  Interest in Accounts:  Right of Offset.  As security for the
payment and  performance  of the  Obligations,  the Borrower  hereby  transfers,
assigns,  and pledges to the Lender and grants to the Lender a security interest
in all funds of the  Borrower  now or  hereafter or from time to time on deposit
with  the  Lender,  with  such  interest  of  the  Lender  to be  retransferred,
reassigned,  and/or released by the Lender, as the case maybe, at the expense of


                                       10

the Borrower  upon payment in full and complete  performance  by the Borrower of
all  Obligations.  All remedies as secured party or assignee of such funds shall
be  exercisable  by the  Lender  upon the  occurrence  of any Event of  Default,
regardless  of whether the  exercise of any such remedy  would  result in any 10
penalty or loss of interest or profit with  respect to any  withdrawal  of funds
deposited in a time deposit account prior to the maturity thereof.  Furthermore,
the Borrower hereby grants to the Lender the right,  exercisable at such time as
any Obligation  shall mature,  whether by acceleration of maturity or otherwise,
of offset or banker's lien against all funds of the Borrower now or hereafter or
from time to time on deposit with the Lender, regardless of whether the exercise
of any such  remedy  would  result in any  penalty or loss of interest or profit
with respect to any  withdrawal  of funds  deposited  in a time deposit  account
prior to the maturity thereof.

     2.9       General Provisions Relating to Interest.

          (a) It is the intention of the parties hereto to comply  strictly with
     the usury laws of the State of Texas and the United  States of America.  In
     this connection,  there shall never be collected,  charged,  or received on
     the sums advanced  hereunder  interest in excess of that which would accrue
     at the  Highest  Lawful  Rate.  For  purposes  of Chapter  303 of the Texas
     Finance Code (Vernon's  1999),  the Borrower agrees that the Highest Lawful
     Rate shall be the  "weekly  ceiling" as defined in such  Section,  provided
     that the Lender may also rely, to the extent  permitted by applicable  laws
     of the State of Texas or the  United  States  of  America,  on  alternative
     maximum  rates of  interest  under  other laws of the State of Texas or the
     United States of America applicable to the Lender, if greater.

          (b)  Notwithstanding  anything  herein or in the Note to the contrary,
     during any Limitation  Period,  the interest rate .to be charged on amounts
     evidenced by the Note shall be the Highest Lawful Rate, and the obligation,
     if any, of the Borrower for the payment of fees or other charges  deemed to
     be interest under  applicable law shall be suspended.  During any period or
     periods of time following a Limitation  Period,  to the extent permitted by
     applicable laws of the State of Texas or the United States of America,  the
     interest rate to be charged  hereunder  shall remain at the Highest  Lawful
     Rate until such time as there has been paid to the Lender (i) the amount of
     interest in excess of that  accruing  at the  Highest  Lawful Rate that the
     Lender would have received  during the  Limitation  Period had the interest
     rate remained at the otherwise  applicable  rate, and (ii) all interest and
     fees otherwise  payable to the Lender but for the effect of such Limitation
     Period.

          (c) If, under any  circumstances,  the  aggregate  amounts paid on the
     Note or under this  Agreement or any other Loan  Document  include  amounts
     which  by law are  deemed  interest  and  which  would  exceed  the  amount
     permitted  if  the  Highest  Lawful  Rate  were  in  effect,  the  Borrower
     stipulates  that such  payment  and  collection  will have been and will be
     deemed to have been,  to the extent  permitted  by  applicable  laws of the
     State of Texas or the United States of America,  the result of mathematical
     error on the part of the  Borrower  and the  Lender;  and the Lender  shall
     promptly  refund  the amount of such  excess  (to the  extent  only of such
     interest  payments  in excess of that  which  would have  accrued  and been
     payable on the basis of the Highest  Lawful  Rate) upon  discovery  of such
     error by the Lender or notice thereof from the Borrower.  In the event that


                                       11





     the maturity of any Obligation is accelerated,  by reason of an election by
     the  Lender or  otherwise,  or in the event of any  required  or  permitted
     prepayment,  then the consideration  constituting interest under applicable
     laws may never  exceed the Highest  Lawful  Rate;  and excess  amounts paid
     which by law are deemed  interest,  if any, shall be credited by the Lender
     on the principal amount of the  Obligations,  or if the principal amount of
     the Obligations shall have been paid in full, refunded to the Borrower.

          (d) All sums  paid,  or agreed to be paid,  to the Lender for the use,
     forbearance and detention of the proceeds of any advance  hereunder  shall,
     to  the  extent  permitted  by  applicable  law,  be  amortized,  prorated,
     allocated, and spread throughout the full term hereof until paid in full so
     that the actual rate of interest is uniform but does not exceed the Highest
     Lawful Rate throughout the full term hereof.

                                   ARTICLE 3.

                                   CONDITIONS

     The  obligations  of the  Lender to enter into this  Agreement  and to make
Loans are subject to the satisfaction of the following conditions precedent:

     3.1 Receipt of Loan  Documents  and Other  Items.  The Lender shall have no
obligation  under this  Agreement  unless and until all matters  incident to the
consummation  of  the  transactions  contemplated  herein,  including,   without
limitation, the review by the Lender or its counsel of the title of the Borrower
to its Oil and Gas  Properties,  shall be  satisfactory  to the Lender,  and the
Lender shall have received,  reviewed,  and approved the following documents and
other items,  appropriately  executed  when  necessary  and,  where  applicable,
acknowledged by one or more authorized officers of the Borrower, all in form and
substance  satisfactory to the Lender and dated, where applicable,  of even date
herewith or a date prior thereto and acceptable to the Lender:

          (a)  multiple  counterparts  of this  Agreement,  as  requested by the
     Lender;

          (b) the Note;

          (c)  copies  of  the  Articles  of  Incorporation  or  Certificate  of
     Incorporation and all amendments  thereto and the bylaws and all amendments
     thereto  of  the  Borrower,  accompanied  by a  certificate  issued  by the
     secretary or an assistant  secretary  of the  Borrower,  to the effect that
     each such copy is correct and complete;

          (d)  certificates  of incumbency and signatures of all officers of the
     Borrower  who are  authorized  to execute  Loan  Documents on behalf of the
     Borrower,  each such  certificate  being  executed by the  secretary  or an
     assistant secretary of the Borrower;

          (e) copies of corporate  resolutions  approving the Loan Documents and
     authorizing the transactions  contemplated herein and therein, duly adopted
     by the boards of directors of the Borrower,  accompanied by certificates of
     the secretary or an assistant secretary of the Borrower, to the effect that
     such copies are true and correct  copies of  resolutions  duly adopted at a


                                     12





     meeting or by unanimous  consent of the board of directors of the Borrower,
     and that such  resolutions  constitute  all the  resolutions  adopted  with
     respect to such transactions,  have not been amended,  modified, or revoked
     in any  respect,  and are in full  force and  effect as of the date of such
     certificate;

          (f)  multiple  counterparts,  as  requested  by  the  Lender,  of  the
     following  Security  Instruments  creating,  evidencing,   perfecting,  and
     otherwise  establishing  Liens  in  favor  of  the  Lender  in  and  to the
     Collateral:

               (i)  Mortgage,  Deed of  Trust,  Indenture,  Security  Agreement,
          Assignment of  Production,  and Financing  Statement from the Borrower
          covering  all  Oil  and  Gas   Properties  of  the  Borrower  and  all
          improvements, personal property, and fixtures related thereto;

               (ii)  Financing   Statements   from  the  Borrower,   as  debtor,
          constituent to the instrument described in clause (i) above;

          (g)  unaudited  Financial  Statements  of the  Borrower as of June 30,
     2000;

          (h) certificates dated as of a recent date from the Secretary of State
     or other  appropriate  Governmental  Authority  evidencing the existence or
     qualification  and good  standing of the  Borrower in its  jurisdiction  of
     incorporation arid in any other jurisdictions where it does business;

          (i)  all  operating,   lease,  sublease,   royalty,  sales,  exchange,
     processing,  farmout, bidding, pooling, unitization,  communitization,  and
     other  agreements  relating to the  Mortgaged  Properties  requested by the
     Lender;

          (j) engineering reports covering the Mortgaged Properties;

          (k) certificates  evidencing the insurance  coverage required pursuant
     to Section 5.16; and

          (l)  such  other   agreements,   documents,   instruments,   opinions,
     certificates,  waivers, consents, and evidence as the Lender may reasonably
     request.

          (m) no Event of  Default  or  Default  shall  exist or will occur as a
     result of the making of the requested Loan;

          (n) no event shall have occurred which,  in the reasonable  opinion of
     the Lender, could have a Material Adverse Effect;

          (o)  each of the  representations  and  warranties  contained  in this
     Agreement  shall be true and  correct and shall be deemed to be repeated by
     the Borrower as if made on the requested date for such Loan;


                                       13





          (p) all of the Security  Instruments shall be in full force and effect
     and provide to the Lender the security intended thereby;

          (q) neither the consummation of the transactions  contemplated  hereby
     nor the making of such Loan shall contravene, violate, or conflict with any
     Requirement of Law;

          (r) the Borrower  shall hold full legal title to the Collateral and be
     the sole beneficial owner thereof;

          (s) the Lender  shall have  received  the  payment of  estimated  fees
     charged by filing  officers  and other public  officials  incurred or to be
     incurred in  connection  with the filing and  recordation  of any  Security
     Instruments,  for which  invoices have been presented as of or prior to the
     date of the requested Loan; and

          (t) all  matters  incident  to the  consummation  of the  transactions
     hereby contemplated shall be satisfactory to the Lender.

          (u) the  execution of a Term Sales  Agreement  between Playa and Giant
     for the life of the loan along with an irrevocable  assignment  letter from
     Playa to Giant whereby Playa authorizes Giant to pay Equiva for the benefit
     of Playa for the term of the loan.

                                   ARTICLE 4.

                         REPRESENTATIONS AND W ARRANTIES

     To induce the Lender to enter  into this  Agreement  and to make the Loans,
the Borrower  represents and warrants to the Lender (which  representations  and
warranties shall survive the delivery of the Note) that:

     4.1 Due  Authorization.  The execution and delivery by the Borrower of this
Agreement  and the  borrowings  hereunder,  the  execution  and  delivery by the
Borrower of the Note,  the  repayment of the Note and interest and fees provided
for in the Note and this  Agreement,  the execution and delivery of the Security
Instruments  by the  Borrower  and the  performance  of all  obligations  of the
Borrower under the Loan Documents are within the power of the Borrower,  have 10
been duly authorized by all necessary  corporate action by the Borrower,  and do
not and will not (a)  require  the consent of any  Governmental  Authority,  (b)
contravene or conflict with any  Requirement  of Law, (c) contravene or conflict
with any indenture,  instrument,  or other  agreement to which the Borrower is a
party or by  which  any  Property  of the  Borrower  may be  presently  bound or
encumbered,  or (d) result in or require the creation or  imposition of any Lien
in,  upon  or of  any  Property  of  the  Borrower  under  any  such  indenture,
instrument, or other agreement, other than the Loan Documents.

     4.2  Corporate  Existence.  The Borrower is a corporation  duly  organized,
legally  existing,  and  in  good  standing  under  the  laws  of its  state  of
incorporation  and is duly  qualified  as a foreign  corporation  and is in good


                                       14



standing in all jurisdictions wherein the ownership of Property or the operation
of its business  necessitates same, other than those  jurisdictions  wherein the
failure to so qualify will not have a Material Adverse Effect.

     4.3 Valid and Binding Obligations.  All Loan Documents,  when duly executed
and delivered by the Borrower, will be the legal, valid, and binding obligations
of the  Borrower,  enforceable  against the  Borrower in  accordance  with their
respective terms.

     4.4 Security  Instruments.  The provisions of each Security  Instrument are
effective to create in favor of the Lender, a legal, valid, and enforceable Lien
in all right,  title,  and interest of the Borrower in the Collateral  described
therein,  which Liens,  assuming the  accomplishment  of recording and filing in
accordance  with  applicable  laws prior to the  intervention of rights of other
Persons,  shall  constitute fully perfected  first-priority  Liens on all right,
title, and interest of the Borrower in the Collateral described therein.

     4.5 Title to Assets. The Borrower has good and indefeasible title to all of
its Properties, free and clear of all Liens except Permitted Liens.

     4.6 Scope and Accuracy of Financial Statements. The Financial Statements of
the  Borrower as of June 30, 2000,  present  fairly the  financial  position and
results of operations and cash flows of the Borrower in accordance  with GAAP as
at the relevant point in time or for the period  indicated,  as  applicable.  No
event or circumstance  has occurred since June 30, 2000,  which could reasonably
be expected to have a Material Adverse Effect.

     4.7 No Material  Misstatements.  No  information,  exhibit,  statement,  or
report  furnished  to the  Lender  by or at the  direction  of the  Borrower  in
connection  with this Agreement  contains any material  misstatement  of fact or
omits to state a  material  fact or any fact  necessary  to make the  statements
contained therein not misleading as of the date made or deemed made.

     4.8 Liabilities,  Litigation, and Restrictions.  Other than as listed under
the heading  "Liabilities" on Exhibit 8.16 attached hereto,  the Borrower has no
liabilities,  direct,  or contingent,  which may materially and adversely affect
its business or  operations or its  ownership of the  Collateral.  Except as set
forth under the heading  "Litigation"  on Exhibit 8.16 hereto,  no litigation or
other  action of any  nature  affecting  the  Borrower  is  pending  before  any
Governmental Authority 10, or, to the best knowledge of the Borrower, threatened
against or affecting the Borrower. No unusual or unduly burdensome  restriction,
restraint  or hazard  exists  by  contract,  Requirement  of Law,  or  otherwise
relative to the  business or  operations  of the Borrower or the  ownership  and
operation  of the  Collateral  other  than such as relate  generally  to Persons
engaged in business activities similar to those conducted by the Borrower.

     4.9  Authorizations;  Consents.  Except as expressly  contemplated  by this
Agreement, no authorization, consent, approval, exemption, franchise, permit, or
license of, or filing with,  any  Governmental  Authority or any other Person is
required to  authorize  or is otherwise  required in  connection  with the valid
execution and delivery by the Borrower of the Loan  Documents or any  instrument
contemplated  hereby, the repayment by the Borrower of the Note and interest and
fees provided in the Note and this Agreement, or the performance by the Borrower
of the Obligations.


                                       15






     4.10  Compliance  with Laws.  The  Borrower  and its  Property,  including,
without  limitation,   the  Mortgaged  Property,  are  in  compliance  with  all
applicable  Requirements of Law, including,  without  limitation,  Environmental
Laws, the Natural Gas Policy Act of 1978, as amended,  and ERISA,  except to the
extent  non-compliance with any such Requirements of Law could not reasonably be
expected to have a Material Adverse Effect.

     4.11 ERISA.  The Borrower does not maintain nor has it maintained any Plan.
The  Borrower  does  not  currently  contribute  to or have  any  obligation  to
contribute to or otherwise have any liability with respect to any Plan.

     4.12 Environmental  Laws. To the best knowledge and belief of the Borrower,
except as would not have a Material  Adverse Effect,  or as described on Exhibit
8.16 under the heading "Environmental Matters":

          (a) no Property of the  Borrower is  currently on or has ever been on,
     or is adjacent to any Property which is on or has ever been on, any federal
     or state list of Superfund Sites;

          (b) no Hazardous Substances have been generated,  transported,  and/or
     disposed  of by the  Borrower  at a site  which  was,  at the  time of such
     generation,  transportation,  and/or  disposal,  or  has  since  become,  a
     Superfund Site;

          (c) except in accordance  with  applicable  Requirements of Law or the
     terms of a valid permit, license,  certificate, or approval of the relevant
     Governmental  Authority, no Release of Hazardous Substances by the Borrower
     or from, affecting,  or related to any Property of the Borrower or adjacent
     to any Property of the Borrower has occurred; and

          (d) no Environmental Complaint has been received by the Borrower.

     4.13  Investment  Company Act  Compliance.  The Borrower is not, nor is the
Borrower directly or indirectly  controlled by or acting on behalf of any Person
which is, an "investment  company" or an  "affiliated  person" of an "investment
company" within the meaning of the Investment Company Act of 1940, as amended.

     4.14 Public Utility Holding  Company Act Compliance.  The Borrower is not a
"holding  company," or an "affiliate" of a "holding company" or of a "subsidiary
company"  of a  "holding  company,"  within the  meaning  of the Public  Utility
Holding Company Act of 1935, as amended.

     4.15 Proper  Filing of Tax Returns;  Payment of Taxes Due. The Borrower has
duly and properly  filed its United  States  income tax return and all other tax
returns which are required to be filed and has paid all taxes due except such as
are being  contested  in good  faith  and as to which  adequate  provisions  and
disclosures have been made. The respective  charges and reserves on the books of
the Borrower with respect to taxes and other governmental charges are adequate.



                                       16





     4.16  Refunds.  Except as  described  on  Exhibit  8.16  under the  heading
"Refunds," no orders of,  proceedings  pending before, or other requirements of,
the Federal Energy Regulatory Commission,  the Texas Railroad Commission, or any
Governmental  Authority  exist which could result in the Borrower being required
to refund any material  portion of the proceeds  received or to be received from
the sale of hydrocarbons constituting part of the Mortgaged Property.

     4.17  Intellectual  Property.  The Borrower  owns or is licensed to use all
Intellectual  Property  necessary  to  conduct  all  business  material  to  its
condition (financial or otherwise),  business, or operations as such business is
currently conducted. No claim has been asserted or is pending by any Person with
the  respect to the use of any such  Intellectual  Property  or  challenging  or
questioning the validity or effectiveness of any such Intellectual Property; and
the  Borrower  knows  of no valid  basis  for any  such  claim.  The use of such
Intellectual  Property by the  Borrower  does not  infringe on the rights of any
Person,  except for such claims and  infringements  as do not, in the aggregate,
give rise to any material liability on the part of the Borrower.

     4.18 Casualties or Taking of Property.  Except as disclosed on Exhibit 8.16
under the heading  "Casualties,"  since June 30, 2000,  neither the business nor
any Property of the Borrower has been materially  adversely affected as a result
of any fire, explosion,  earthquake, flood, drought, windstorm, accident, strike
or other labor  disturbance,  embargo,  requisition  or taking of  Property,  or
cancellation  of  contracts,   permits,   or  concessions  by  any  Governmental
Authority, riot, activities of armed forces, or acts of God.

     4.19  Locations  of  Borrower.  The  principal  place of business and chief
executive  office of the  Borrower is located at the address of the Borrower set
forth in Section 8.3 or at such other  location  as the  Borrower  may have,  by
proper written notice  hereunder,  advised the Lender,  provided that such other
location is within a state in which  appropriate  financing  statements from the
Borrower in favor of the Lender have been filed.

     4.20 Subsidiaries.  The Borrower has no Subsidiaries except those described
on Exhibit 8.16 under the heading "Subsidiaries".

                                   ARTICLE 5.

                              AFFIRMATIVE COVENANTS

     So long as any Obligation  remains  outstanding or unpaid or any Commitment
exists, the Borrower shall:

     5.1 Maintenance and Access to Records. Keep adequate records, in accordance
with GAAP , of all its  transactions so that at any time, and from time to time,
its true  and  complete  financial  condition  may be  readily  determined,  and
promptly  following  the  reasonable  request of the Lender,  make such  records

                                       17






available  for  inspection  by the Lender and,  at the expense of the  Borrower,
allow the Lender to make and take away copies thereof.

     5.2 Quarterly Financial  Statements;  Compliance  Certificates.  Compliance
Certificates.  Deliver  to the  Lender,  (a) on or before the 45th day after the
close of each of the first  three  quarterly  periods of each fiscal year of the
Borrower, a copy of the unaudited Financial Statements of the Borrower as at the
close of such quarterly period and from the beginning of such fiscal year to the
end of such period,  such Financial  Statements to be certified by a Responsible
Officer  of the  Borrower  as  having  been  prepared  in  accordance  with GAAP
consistently  applied  and  as a  fair  presentation  of  the  condition  of the
Borrower,  subject to changes resulting from normal year-end audit  adjustments,
and (b) on or before the 45th day after the close of each fiscal  quarter,  with
the exception of the last fiscal quarter, a Compliance Certificate.

     5.3 Annual Financial  Statements.  Deliver to the Lender,  on or before the
120th day after the close of each  fiscal  year of the  Borrower,  a copy of the
annual   audited   Financial   Statements  of  the  Borrower  and  a  Compliance
Certificate.

                  5.4      Oil and Gas Reserve Reports.

     (a)  Deliver to the  Lender no later  than April 1 of each year  during the
term of this Agreement,  engineering reports in form and substance  satisfactory
to the Lender certified by any nationally- or regionally-recognized  independent
consulting petroleum engineers acceptable to the Lender as fairly and accurately
setting  forth  (i)  the  proven  and  producing,   shut-in,   behind-pipe,  and
undeveloped oil and gas reserves (separately classified as such) attributable to
the  Mortgaged  Properties  as of January 1 of the year for which  such  reserve
reports are furnished, (ii) the aggregate present value of the future net income
with  respect to such  Mortgaged  Properties,  discounted  at a stated per annum
discount rate of proven and producing reserves,  (iii) projections of the annual
rate of production, gross income, and net income with respect to such proven and
producing  reserves,  and (iv)  information  with respect to the  "take-or-pay,"
"prepayment," and gas-balancing liabilities of the Borrower.

     (b)  Deliver to the Lender no later than  October 1 of each year during the
term of this Agreement,  engineering reports in form and substance  satisfactory
to the  Lender  prepared  by or under the  supervision  of the  chief  petroleum
engineer of the Borrower evaluating the Mortgaged Properties as of July 1 of the
year for which such reserve  reports are furnished and updating the  information
provided in the reports pursuant to Section 5.4(a).

     (c)  Each of the  reports  provided  pursuant  to  this  Section  shall  be
submitted  to the Lender  together  with  additional  data  concerning  pricing,
quantities of production  from the Mortgaged  Properties,  volumes of production
sold,  purchasers  of  production,  gross  revenues,  expenses,  and such  other
information  and  engineering  and geological  data with respect  thereto as the
Lender may reasonably request.

     5.5 Title Opinions: Title Defects. Promptly upon the request of the Lender,
furnish to the  Lender  title  opinions,  in form and  substance  and by counsel


                                       18





satisfactory to the Lender,  or other  confirmation  of title  acceptable to the
Lender,  covering Oil and Gas Properties  constituting  not less than 81% of the
value,  determined  by the  Lender  in its  sole  discretion,  of the  Mortgaged
Properties;  and  promptly,  but in any event within 60 days after notice by the
Lender of any defect,  material  in the  opinion of the Lender in value,  in the
title of the  Borrower  to any of its Oil and Gas  Properties,  clear such title
defects,  and,  in the event any such  title  defects  are not cured in a timely
manner, pay all related costs and fees incurred by the Lender to do so.

     5.6  Notices of Certain  Events.  Deliver to the Lender,  immediately  upon
having   knowledge  of  the  occurrence  of  any  of  the  following  events  or
circumstances, a written statement with respect thereto, signed by a Responsible
Officer of the Borrower and setting forth the relevant event or circumstance and
the  steps  being  taken  by  the  Borrower   with  respect  to  such  event  or
circumstance:

          (a) any Default or Event of Default;

          (b) any default or event of default under any  contractual  obligation
     of the Borrower or any litigation, investigation, or proceeding between the
     Borrower and any Governmental Authority which, in either case, if not cured
     or if  adversely  determined,  as the  case  may be,  could  reasonably  be
     expected to have a Material Adverse Effect;

          (c) any litigation or proceeding involving the Borrower as a defendant
     or in which any Property of the Borrower is subject to a claim and in which
     the  amount  involved  is  $200,000  or more and  which is not  covered  by
     insurance or in which injunctive or similar relief is sought;

          (d) the receipt by the Borrower of any Environmental Complaint;

          (e) any actual, proposed, or threatened testing or other investigation
     by any Governmental  Authority or other Person concerning the environmental
     condition  of, or relating  to, any Property of the Borrower or adjacent to
     any Property of the Borrower following any allegation of a violation of any
     Requirement of Law;

          (f) any  Release of  Hazardous  Substances  by the  Borrower  or from,
     affecting,  or related to any  Property of the  Borrower or adjacent to any
     Property of the Borrower except in accordance with applicable  Requirements
     of Law or the terms of a valid permit, license, certificate, or approval of
     the relevant Governmental  Authority, or the violation of any Environmental
     Law, or the revocation,  suspension,  or forfeiture of or failure to renew,
     any permit, license,  registration,  approval, or authorization which could
     reasonably be expected to have a Material Adverse Effect;

          (g) the change in identity or address of any Person  remitting  to the
     Borrower  proceeds  from  the  sale  of  hydrocarbon   production  from  or
     attributable to any Mortgaged Property;

          (h) any change in the senior management of the Borrower; and


                                       19




          (i) any other event or condition which could reasonably be expected to
     have a Material Adverse Effect.

     5.7  Additional  Information.  Furnish  to the  Lender,  promptly  upon the
request of the Lender, such additional financial or other information concerning
the assets,  liabilities,  operations,  and  transactions of the Borrower as the
Lender  may from time to time  request;  and notify the Lender not less than ten
Business Days prior to the  occurrence of any condition or event that may change
the proper  location for the filing of any  financing  statement or other public
notice or  recording  for the purpose of  perfecting  a Lien in any  Collateral,
including,  without  limitation,  any change in its name or the  location of its
principal place of business or chief executive  office;  and upon the request of
the Lender,  execute such additional Security fustruments as may be necessary or
appropriate in connection therewith.

     5.8  Compliance  with Laws.  Except to the extent the  failure to comply or
cause  compliance  would not have a Material  Adverse  Effect,  comply  with all
applicable Requirements of Law, including,  without limitation,  (a) the Natural
Gas Policy Act of 1978, as amended,  (b) ERISA, 10 (c)  Environmental  Laws, and
(d) all permits,  licenses,  registrations,  approvals,  and  authorizations (i)
related to any natural or  environmental  resource or media  located on,  above,
within,  in the  vicinity  of,  related to or  affected  by any  Property of the
Borrower,  (ii) required for the  performance of the operations of the Borrower,
or  (iii)  applicable  to the use,  generation,  handling,  storage,  treatment,
transport,  or disposal of any Hazardous  Substances;  and cause all  employees,
crew members, agents, contractors,  subcontractors, and future lessees (pursuant
to appropriate lease provisions) of the Borrower,  while such Persons are acting
within the scope of their  relationship  with the  Borrower,  to comply with all
such  Requirements  of Law as may be  necessary  or  appropriate  to enable  the
Borrower to so comply.

     5.9  Payment  of  Assessments  and  Charges.  Pay all  taxes,  assessments,
governmental  charges,  rent, and other  indebtedness  which,  if unpaid,  might
become a Lien against the Property of the Borrower,  except any of the foregoing
being  contested in good faith and as to which  adequate  reserve in  accordance
with  GAAP has been  established  or  unless  failure  to pay  would  not have a
Material Adverse Effect.

     5.10  Maintenance of Corporate  Existence and Good  Standing.  Maintain its
corporate  existence or qualification  and good standing in its jurisdictions of
incorporation  and in all  jurisdictions  wherein  the  Property  now  owned  or
hereafter  acquired or business now or hereafter  conducted  necessitates  same,
unless the failure to do so would not have a Material Adverse Effect.

     5.11 Payment of Notes:  Performance of Obligations.  Pay the Note according
to the  reading,  tenor,  and effect  thereof,  as modified  hereby,  and do and
perform every act and discharge all of its other Obligations.

     5.12 Further  Assurances.  Promptly  cure any defects in the  execution and
delivery of any of the Loan Documents and all agreements  contemplated  thereby,
and execute,  acknowledge,  and deliver such other assurances and instruments as
shall,  in the opinion of the Lender,  be  necessary to fulfill the terms of the
Loan Documents.


                                       20





     5.13  Subsequent  Fees and Expenses of Lender.  Upon request by the Lender,
promptly  reimburse the Lender (to the fullest extent  permitted by law) for all
amounts reasonably expended, advanced, or incurred by or on behalf of the Lender
to satisfy any  obligation of the Borrower under any of the Loan  Documents;  to
collect the Obligations;  to ratify,  amend, restate, or prepare additional Loan
Documents,  as the case may be;  for the  filing  and  recordation  of  Security
Instruments;  to  enforce  the  rights  of the  Lender  under  any  of the  Loan
Documents; and to protect the Properties or business of the Borrower, including,
without limitation,  the Collateral,  which amounts shall be deemed compensatory
in nature and  liquidated as to amount upon notice to the Borrower by the Lender
and which amounts shall include,  but not be limited to (a) all court costs, (b)
reasonable  attorneys'  fees, (c)  reasonable  fees and expenses of auditors and
accountants  incurred  to protect  the  interests  of the  Lender,  (d) fees and
expenses incurred in connection with the participation by the Lender as a member
of the creditors' committee in a case commenced under any Insolvency Proceeding,
(e) fees and expenses  incurred in connection  with lifting the  automatic  stay
prescribed  in  ss.362  Title 11 of the  United  States  Code,  and (f) fees and
expenses incurred in connection with any action pursuant to ss. 1129 Title 11 of
the United States Code all reasonably  incurred by the Lender in connection with
the collection of any sums due under the Loan Documents,  together with interest
at the per annum interest rate equal to the Floating Rate, calculated on a basis
of a calendar year of 365 or 366 days,  as the case may be,  counting the actual
number of days elapsed,  on each such amount from the date of notification  that
the same was expended,  advanced, or incurred by the Lender until the date it is
repaid to the Lender,  with the  obligations  under this Section  surviving  the
non-assumption  of this  Agreement  in a case  commenced  under  any  Insolvency
Proceeding  and being  binding  upon the  Borrower  and/or a trustee,  receiver,
custodian, or liquidator of the Borrower appointed in any such case.

     5.14 Operation of Oil and Gas Properties.  Develop,  maintain,  and operate
its Oil and Gas  Properties  in a prudent and  workmanlike  manner in accordance
with industry standards.

     5.15 Maintenance and Inspection of Properties. Maintain all of its tangible
Properties in good repair and condition,  ordinary wear and tear excepted;  make
all  necessary  replacements  thereof and operate such  Properties in a good and
workmanlike  manner;  and permit any authorized  representative of the Lender to
visit and inspect, at the expense of the Borrower,  any tangible Property of the
Borrower.

     5.16  Maintenance  of  Insurance.  Maintain  insurance  with respect to its
Properties and  businesses  against such  liabilities,  casualties,  risks,  and
contingencies as is customary in the relevant industry and sufficient to prevent
a Material Adverse Effect, all such insurance to be in amounts and from insurers
acceptable  to the Lender,  maintained  by  Borrower,  naming the Lender as loss
payee,  and,  upon any  renewal of any such  insurance  and at other  times upon
request  by the  Lender,  furnish to the Lender  evidence,  satisfactory  to the
Lender, within 30 days of the Closing Date of the maintenance of such insurance.
The Lender shall have the right to collect,  and the Borrower  hereby assigns to
the Lender,  any and all monies that may become  payable  under any  policies of
insurance  relating to business  interruption  or by reason of damage,  loss, or
destruction  of any of the  Collateral  in the  event of any  damage,  loss,  or
destruction for which insurance  proceeds  relating to business  interruption or
Collateral exceed $100,000,  the Lender may, at its option,  apply all such sums


                                       21

or any part  thereof  received  by it toward  the  payment  of the  Obligations,
whether matured or unmatured,  application to be made first to interest and then
to principal,  and shall deliver to the Borrower the balance, if any, after such
application has been made. In the event of any such damage, loss, or destruction
for which insurance  proceeds are $100,000 or less,  provided that no Default or
Event of Default has occurred and is  continuing,  the Lender shall  deliver any
such proceeds  received by it to the Borrower.  In the event the Lender receives
insurance proceeds not attributable to Collateral or business interruption,  the
Lender shall deliver any such proceeds to the Borrower.

     5.17  Indemnification.  INDEMNIFY AND HOLD THE LENDER AND ITS SHAREHOLDERS,
OFFICERS, DIRECTORS,  EMPLOYEES, AGENTS,  ATTORNEYS-IN-FACT,  AND AFFILIATES AND
EACH  TRUSTEE  FOR THE  BENEFIT  OF THE  LENDER  UNDER ANY  SECURITY  INSTRUMENT
HARMLESS  FROM AND  AGAINST ANY AND ALL CLAIMS,  LOSSES,  DAMAGES,  LIABILITIES,
FINES, PENALTIES,  CHARGES,  ADMINISTRATIVE AND JUDICIAL PROCEEDINGS AND ORDERS,
JUDGMENTS,  REMEDIAL ACTIONS,  REQUIREMENTS AND ENFORCEMENT ACTIONS OF ANY KIND,
AND ALL COSTS AND EXPENSES INCURRED IN CONNECTION THEREWITH (INCLUDING,  WITHOUT
LIMITATION,  ATTORNEYS' FEES AND EXPENSES),  ARISING DIRECTLY OR INDIRECTLY , IN
WHOLE OR IN PART,  FROM (A) THE PRESENCE OF ANY HAZARDOUS  SUBSTANCES ON, UNDER,
OR FROM ANY  PROPERTY  OF THE  BORROWER,  WHETHER  PRIOR TO OR  DURING  THE TERM
HEREOF,  (B) ANY ACTIVITY CARRIED ON OR UNDERTAKEN ON OR OFF ANY PROPERTY OF THE
BORROWER,  WHETHER  PRIOR TO OR  DURING  THE TERM  HEREOF,  AND  WHETHER  BY THE
BORROWER  OR  ANY  PREDECESSOR  IN  TITLE,  EMPLOYEE,  AGENT  ,  CONTRACTOR,  OR
SUBCONTRACTOR  OF THE  BORROWER  OR ANY OTHER  PERSON AT ANY TIME  OCCUPYING  OR
PRESENT ON SUCH PROPERTY, IN CONNECTION WITH THE HANDLING,  TREATMENT,  REMOVAL,
STORAGE, DECONTAMINATION,  CLEANUP, TRANSPORTATION, OR DISPOSAL OF ANY HAZARDOUS
SUBSTANCES  AT ANY TIME  LOCATED OR PRESENT ON OR UNDER SUCH  PROPERTY,  (C) ANY
RESIDUAL  CONTAMINATION  ON OR  UNDER  ANY  PROPERTY  OF THE  BORROWER,  (D) ANY
CONTAMINATION  OF ANY PROPERTY OR NATURAL  RESOURCES  ARISING IN CONNECTION WITH
THE  GENERATION,  USE,  HANDLING,  STORAGE,  TRANSPORTATION  OR  DISPOSAL OF ANY
HAZARDOUS  SUBSTANCES BY THE BORROWER OR ANY  EMPLOYEE,  AGENT,  CONTRACTOR,  OR
SUBCONTRACTOR  OF THE BORROWER WHILE SUCH PERSONS ARE ACTING WITHIN THE SCOPE OF
THEIR  RELATIONSHIP  WITH THE  BORROWER,  IRRESPECTIVE  OF  WHETHER  ANY OF SUCH
ACTIVITIES WERE OR WILL BE UNDERTAKEN IN ACCORDANCE WITH APPLICABLE REQUIREMENTS

                                       22







OF LAW, OR (E) THE PERFORMANCE AND ENFORCEMENT OF ANY LOAN DOCUMENT OR ANY OTHER
ACT OR  OMISSION  IN  CONNECTION  WITH OR  RELATED TO ANY LOAN  DOCUMENT  OR THE
TRANSACTIONS  CONTEMPLATED THEREBY,  INCLUDING,  WITHOUT LIMITATION,  ANY OF THE
FOREGOING IN THIS SECTION ARISING FROM NEGLIGENCE,  WHETHER SOLE OR CONCURRENT ,
ON THE  PART OF THE  LENDER  OR ANY OF ITS  SHAREHOLDERS,  OFFICERS,  DIRECTORS,
EMPLOYEES,  AGENTS,  ATTORNEYS-IN-FACT,  OR  AFFILIATES  OR ANY  TRUSTEE FOR THE
BENEFIT  OF THE  LENDER  UNDER  ANY  SECURITY  INSTRUMENT;  WITH  THE  FOREGOING
INDEMNITY SURVIVING  SATISFACTION OF ALL OBLIGATIONS AND THE TERMINATION OF THIS
AGREEMENT,  UNLESS ALL SUCH  OBLIGATIONS HAVE BEEN SATISFIED WHOLLY IN CASH FROM
THE  BORROWER  AND  NOT BY WAY OF  REALIZATION  AGAINST  ANY  COLLATERAL  OR THE
CONVEYANCE OF ANY PROPERTY IN LIEU THEREOF,  PROVIDED THAT SUCH INDEMNITY  SHALL
NOT EXTEND TO ANY ACT OR  OMISSION BY THE LENDER  WITH  RESPECT TO ANY  PROPERTY
SUBSEQUENT TO THE LENDER BECOMING THE OWNER OF SUCH PROPERTY AND WITH RESPECT TO
WHICH PROPERTY SUCH CLAIM.,  LOSS, DAMAGE,  LIABILITY,  FINE,  PENALTY,  CHARGE,
PROCEEDING,  ORDER,  JUDGMENT,  ACTION, OR REQUIREMENT  ARISES SUBSEQUENT TO THE
ACQUISITION OF TITLE THERETO BY THE LENDER.

                                   ARTICLE 6.

                               NEGATIVE COVENANTS

     So long as any Obligation  remains  outstanding or unpaid or any Commitment
exists, the Borrower will not:

     6.1  Indebtedness.   Create,   incur,   assume,  or  suffer  to  exist  any
Indebtedness,  whether  by way of  loan or  otherwise;  provided,  however,  the
foregoing  restriction  shall not apply to (a) the  Obligations,  (b)  unsecured
accounts  payable  incurred in the ordinary  course of  business,  which are not
unpaid in excess of 60 days beyond  invoice date or are being  contested in good
faith and as to which such  reserve as is  required  by GAAP has been made,  (c)
crude  oil,  natural  gas,  or  other  hydrocarbon  floor,  collar,  cap,  price
protection,  or swap  agreements,  in  form  and  substance  and  with a  Person
acceptable to the Lender,  provided that (i) each  commitment  issued under such
agreement must also be approved by the Lender and (ii) such agreements shall not
be entered into with respect to Mortgaged  Properties  constituting  more 75% of
the present value of estimated  future net revenues,  computed  using a discount
factor of 10%, of all proved developed producing Mortgaged Properties.

     6.2 Contingent  Obligations.  Create, incur, assume, or suffer to exist any
Contingent  Obligation;  provided,  however, the foregoing restriction shall not
apply to (a)  performance  guarantees  and  performance  surety  or other  bonds
provided in the ordinary  course of business,  or (b ) trade credit  incurred or
operating leases entered into in the ordinary course of business.

     6.3 Liens. Create, incur, assume, or suffer to exist any Lien on any of its
Oil and Gas  Properties  or any other  Property,  whether now owned or hereafter
acquired;  provided,  however,  the  foregoing  restrictions  shall not apply to
Permitted Liens.

     6.4 Sales of Assets. Without the prior written consent of the Lender, sell,
transfer, or otherwise dispose of, in one or any series of transactions, assets,
whether now owned or hereafter acquired.



                                       23


     6.5  Leasebacks.  Enter into any agreement to sell or transfer any Property
and thereafter rent or lease as lessee such Property or other Property  intended
for the same use or purpose as the Property sold or transferred.

     6.6 Loans or Advances. Make or agree to make or allow to remain outstanding
any  loans  or  advances  to  any  Person;  provided,   however,  the  foregoing
restrictions shall not apply to (a) advances or extensions of credit in the form
of accounts  receivable  incurred in the  ordinary  course of business  and upon
terms common in the industry for such  accounts  receivable,  or (b) advances to
employees of the Borrower for the payment of expenses in the ordinary  course of
business.

     6.7 Investments.  Acquire  Investments in, or purchase or otherwise acquire
all or substantially all of the assets of, any Person;  provided,  however,  the
foregoing  restriction shall not apply to the purchase or acquisition of (a) Oil
and Gas Properties,  (b ) Investments in the form of (i) debt securities  issued
or directly and fully  guaranteed or insured by the United States  Government or
any agency or instrumentality thereof, with maturities of no more than one year,
(ii)  commercial  paper of a domestic issuer rated at the date of acquisition at
least  P-2 by  Moody's  Investor  Service,  Inc.  or A-2 by  Standard  &  Poor's
Corporation  and with  maturities  of no more  than  one  year  from the date of
acquisition,   or  (iii)  repurchase  agreements  covering  debt  securities  or
commercial paper of the type permitted in this Section, certificates of deposit,
demand deposits,  eurodollar time deposits, overnight bank deposits and bankers'
acceptances,  with  maturities  of no  more  than  one  year  from  the  date of
acquisition,  issued by or  acquired  from or through  the Lender or any bank or
trust company organized under the laws of the United States or any state thereof
and  having  capital  surplus  and  undivided   profits   aggregating  at  least
$100,000,000,  (c) other short-term  Investments similar in nature and degree of
risk to those  described  in clause  (b) of this  Section,  or (d)  money-market
funds.

     6.8 Dividends and Distributions.  Declare, pay, or make, whether in cash or
Property of the Borrower, any dividend or distribution on, or purchase,  redeem,
or  otherwise  acquire for value,  any share of any class of its capital  stock;
provided,  however, the foregoing  restriction shall not apply to dividends paid
in capital stock of the Borrower.

     6.9  Changes  in  Corporate  Structure.   Enter  into  any  transaction  of
consolidation,  merger,  or  amalgamation;  liquidate,  wind up, or dissolve (or
suffer any liquidation or dissolution).

     6.10 Transactions with Affiliates.  Directly or indirectly,  enter into any
transaction (including the sale, lease, or exchange of Property or the rendering
of  service)  with any of its  Affiliates,  other than upon fair and  reasonable
terms no less  favorable  than could be obtained in an arm's length  transaction
with a Person which was not an Affiliate.

     6.11 Lines of Business. Expand, on its own or through any Subsidiary,  into
any line of business other than those in which the Borrower is engaged as of the
date hereof.


                                       24




     6.12 Plan Obligations.  Assume or otherwise become subject to an obligation
to  contribute  to or maintain  any Plan or acquire any Person  which has at any
time had an obligation to contribute to or maintain any Plan.

     6.13  Current  Ratio.  Permit  the  ratio  of  Current  Assets  to  Current
Liabilities to be less than 1.00 to 1.00 at anytime.

     6.14 Debt Coverage  Ratio.  Permit,  as of the close of any fiscal quarter,
the ratio of (a) EBITDA to (b) interest shall not be lest than 1.1 to 1.0.

                                   ARTICLE 7.

                                EVENTS OF DEFAULT

     7.1  Enumeration  of Events of Default.  Any of the following  events shall
constitute an Event of Default:

          (a) default  shall be made in the payment when due of any  installment
     of principal or interest under this Agreement or the Note or in the payment
     when due of any fee or other sum payable  under any Loan  Document and such
     default as to interest or fees only shall have continued for three days;

          (b) default  shall be made by the Borrower in the due  observance  or;
     performance of any of its obligations  under the Loan  Documents,  and such
     default shall  continue for 30 days after the earlier of notice  thereof to
     the Borrower by the Lender or knowledge thereof by the Borrower;

          (c) any  representation or warranty made by the Borrower in any of the
     Loan  Documents  proves to have been untrue in any material  respect or any
     representation, statement (including Financial Statements), certificate, or
     data furnished or made to the Lender in connection  herewith proves to have
     been untrue in any  material  respect as of the date the facts  therein set
     forth were stated or certified;

          (d) default  shall be made by the Borrower (as  principal or guarantor
     or other  surety) in the  payment or  performance  of any bond,  debenture,
     note,  Commodity Hedge Agreement or other  Indebtedness or under any credit
     agreement, loan agreement, indenture, promissory note, or similar agreement
     or instrument  executed in connection  with any of the foregoing,  and such
     default shall remain  unremedied  for in excess of the period of grace,  if
     any, with respect thereto;

          (e) the Borrower  shall be unable to satisfy any condition or cure any
     circumstance specified in Article 3, the satisfaction or curing of which is
     precedent to the right of the Borrower to obtain a Loan and such  inability
     shall continue for a period in excess of 30 days;


                                       25





          (f) the Borrower shall (i) apply for or consent to the  appointment of
     a receiver,  trustee,  or liquidator of it or all or a substantial  part of
     its  assets,  (ii)  file a  voluntary  petition  commencing  an  Insolvency
     Proceeding,  (iii) make a general  assignment for the benefit of creditors,
     (iv) be  unable,  or admit  in  writing  its  inability,  to pay its  debts
     generally as they become due, or (v) file an answer  admitting the material
     allegations of a petition filed against it in any Insolvency Proceeding;

          (g) an  order,  judgment,  or  decree  shall be  entered  against  the
     Borrower  by any  court of  competent  jurisdiction  or by any  other  duly
     authorized authority, on the petition of a creditor or otherwise,  granting
     relief  in any  Insolvency  Proceeding  or  approving  a  petition  seeking
     reorganization  or an  arrangement  of its debts or  appointing a receiver,
     trustee,  conservator,  custodian,  or  liquidator  of it  or  all  or  any
     substantial part of its assets, and such order,  judgment,  or decree shall
     not be dismissed or stayed within 60 days;

          (h) the levy  against any  significant  portion of the Property of the
     Borrower,  or any execution,  garnishment,  attachment,  sequestration,  or
     other writ or similar  proceeding  which is not  permanently  dismissed  or
     discharged within 60 days, after the levy;

          (i) a final and  non-appealable  order,  judgment,  or decree shall be
     entered against the Borrower for money damages and/or  Indebtedness  due in
     an amount in excess of $200,000,  and such order, judgment, or decree shall
     not be dismissed or stayed within 60 days;

          (j) any  charges  are  filed or any  other  action  or  proceeding  is
     instituted by any  Governmental  Authority  against the Borrower  under the
     Racketeering   Influence  and  Corrupt  Organizations  Statute  (18  U.S.C.
     ss.1961),  the result of which could be the  forfeiture  or transfer of any
     material  Property of the Borrower subject to a Lien in favor of the Lender
     without (i)  satisfaction  or provision for  satisfaction  of such Lien, or
     (ii) such  forfeiture or transfer of such  Property  being  expressly  made
     subject to such Lien;

          (k) the Borrower shall have (i) concealed,  removed,  or diverted,  or
     permitted to be concealed,  removed, or diverted, any part of its Property,
     with intent to hinder, delay, or defraud its creditors or any of them, (ii)
     made or suffered a transfer of any of its Property  which may be fraudulent
     under any bankruptcy, fraudulent conveyance, or similar law, (iii) made any
     transfer of its Property to or for the benefit of a creditor at a time when
     other creditors  similarly  situated have not been paid, or (iv) shall have
     suffered or permitted,  while insolvent, any creditor to obtain a Lien upon
     any of its Property  through legal  proceedings  or distraint  which is not
     vacated within 30 days from the date thereof;


                                       26




          (l) any  Security  Instrument  shall for any reason  not, or cease to,
     create 10 valid and perfected  first-priority  Liens against the Collateral
     purportedly covered thereby;

          (m) John N.  Ehrman  ceases to be the chief  executive  officer of the
     Borrower; or

          (n) the  occurrence  of a Material  Adverse  Effect and the same shall
     remain  unremedied  for in  excess  of 30 days  after  notice  given by the
     Lender.

     7.2 Remedies.

          (a) Upon the  occurrence of an Event of Default  specified in Sections
     7.1(f) or 7.1(g), immediately and without notice, (i) all Obligations shall
     automatically  become  immediately  due and payable,  without  presentment,
     demand, protest, notice of protest,  default, or dishonor, notice of intent
     to accelerate maturity, notice of acceleration of maturity, or other notice
     of any kind,  except as may be provided to the contrary  elsewhere  herein,
     all of which are  hereby  expressly  waived by the  Borrower;  and (ii) the
     Lender is  hereby  authorized  at any time and from  time to time,  without
     notice to the  Borrower  (any such  notice  being  expressly  waived by the
     Borrower),  to set-off and apply any and all deposits  (general or special,
     time or demand,  provisional  or final)  held by the Lender and any and all
     other  indebtedness at any time owing by the Lender to or for the credit or
     account of the  Borrower  against any and all of the  Obligations  although
     such Obligations may be unmatured.

          (b) Upon the  occurrence  of any Event of  Default  other  than  those
     specified  in Sections  7.1(f) or 7.1(g),  (i) the Lender may, by notice to
     the Borrower,  declare all Obligations immediately due and payable, without
     presentment,  demand,  protest,  notice of protest,  default,  or dishonor,
     notice  of  intent  to  accelerate  maturity,  notice  of  acceleration  of
     maturity,  or other  notice of any kind,  except as may be  provided to the
     contrary  elsewhere herein, all of which are hereby expressly waived by the
     Borrower;  and (ii) the  Lender is hereby  authorized  at any time and from
     time to time,  without  notice  to the  Borrower  (any  such  notice  being
     expressly  waived  by the  Borrower),  to  set-off  and  apply  any and all
     deposits (general or special, time or demand, provisional or final) held by
     the  Lender  and any and all other  indebtedness  at any time  owing by the
     Lender to or for the credit or account of the Borrower  against any and all
     of the Obligations although such Obligations may be unmatured.

          (c) Upon the  occurrence  of any Event of Default,  the Lender may, in
     addition  to the  foregoing  in this  Section,  exercise  any or all of its
     rights and remedies provided by law or pursuant to the Loan Documents.

                                   ARTICLE 8.

                                  MISCELLANEOUS

     8.1 Transfers; Participations. The Lender may, at any time, sell, transfer,
assign, or grant  participations in the Obligations or any portion thereof;  and
the Lender  may  forward  to each  Transferee  and  prospective  Transferee  all


                                       27





documents and information relating to such Obligations, whether furnished by the
Borrower or otherwise obtained, as the Lender determines necessary or desirable.
The  Borrower  agrees  that each  Transferee,  regardless  of the  nature of any
transfer to it, may exercise all rights (including,  without limitation,  rights
of set-off) with respect to the portion of the  Obligations  held by it as fully
as if  such  Transferee  were  the  direct  holder  thereof,  subject  to .  any
agreements between such Transferee and the transferor to such Transferee.

     8.2  Survival  of   Representations,   Warranties,   and   Covenants.   All
representations  and warranties of the Borrower and all covenants and agreements
herein  made  shall  survive  the  execution  and  delivery  of the Note and the
Security  Instruments  and  shall  remain  in force  and  effect  so long as any
Obligation is outstanding or any Commitment exists.

     8.3 Notices and Other Communications. Except as to verbal notices expressly
authorized  herein,  which verbal  notices  shall be  confirmed in writing,  all
notices,  requests, and communications  hereunder shall be in writing (including
by telecopy).  Unless  otherwise  expressly  provided  herein,  any such notice,
request,  demand, or other communication shall be deemed to have been duly given
or made when  delivered  by hand,  or,  in the case of  delivery  by mail,  when
deposited  in the  mail,  certified  mail,  return  receipt  requested,  postage
prepaid,   or,  in  the  case  of  telecopy  notice,  when  receipt  thereof  is
acknowledged orally or by written confirmation report, addressed as follows:

          (a) if to the Lender, to:

              Equiva Trading Company
              Suite 3200
              500 Dallas
              Houston, Texas 77002
              Attn: Jerry Afdahl
              Telecopy: (713) 277-6865

          (b) if to the Borrower, to:

              Playa Minerals & Energy, Inc.
              650 North Sam Houston Parkway East
              Houston, Texas 77060
              Attention: President
              Telecopy: (281) 272-2987

     Any party may, by proper written notice hereunder to the others, change the
individuals or addresses to which such notices to it shall thereafter be sent.

     8.4  Parties  in  Interest.  Subject  to the  restrictions  on  changes  in
corporate  structure set forth in Section 6.9 and other applicable  restrictions
contained herein,  all covenants and agreements herein contained by or on behalf


                                       28




of the  Borrower or the Lender shall be binding upon and inure to the benefit of
the  Borrower or the  Lender,  as the case may be, and their  respective  legal.
representatives, successors, and assigns.

     8.5 Rights of Third Parties.  All provisions  herein are imposed solely and
exclusively  for the  benefit of the Lender and the  Borrower.  No other  Person
shall have any right,  benefit,  priority,  or interest hereunder or as a result
hereof  or have  standing  to  require  satisfaction  of  provisions  hereof  in
accordance  with their terms,  and any or all of such  provisions  may be freely
waived in whole or in part by the  Lender at any time if in its sole  discretion
it deems it advisable to do so.

     8.6 Renewals:  Extensions. All provisions of this Agreement relating to the
Note shall apply with equal force and effect to each  promissory  note hereafter
executed which in whole or in part represents a renewal or extension of any part
of the Indebtedness of the Borrower under this Agreement, the Note, or any other
Loan Document.

     8.7 No Waiver:  Rights Cumulative.  No course of dealing on the part of the
Lender,  its officers or employees,  nor any failure or delay by the Lender with
respect to exercising any of its rights under any Loan Document shall operate as
a waiver  thereof.  The rights of the Lender under the Loan  Documents  shall be
cumulative  and the  exercise  or partial  exercise  of any such right shall not
preclude  the  exercise  of any other  right.  The  making of any Loan shall not
constitute a waiver of any of the  covenants,  warranties,  or conditions of the
Borrower  contained  herein.  In the event the Borrower is unable to satisfy any
such covenant, warranty, or condition, the making of any Loan shall not have the
effect of precluding the Lender from  thereafter  declaring such inability to be
an Event of Default as hereinabove provided.

     8.8  Survival  Upon  Unenforceability.  In the event  anyone or more of the
provisions  contained in any of the Loan  Documents  or in any other  instrument
referred to herein or executed in connection with the Obligations shall, for any
reason, be held to be invalid,  illegal,  or unenforceable in any respect,  such
invalidity, illegality, or unenforceability shall not affect any other provision
of any Loan Document or of any other  instrument  referred to herein or executed
in connection with such Obligations.

     8.9 Amendments:  Waivers.  Neither this Agreement nor any provision  hereof
may be  amended,  waived,  discharged,  or  terminated  orally,  but  only by an
instrument  in  writing  signed by the party  against  whom  enforcement  of the
amendment, waiver, discharge, or termination is sought.

     8.10  Controlling  Agreement.  In  the  event  of a  conflict  between  the
provisions  of  this  Agreement  and  those  of any  other  Loan  Document,  the
provisions of this Agreement shall control.

     8.11  Disposition  of  Collateral.  Notwithstanding  any term or provision,
express  or  implied,  in any  of the  Security  Instruments,  the  realization,
liquidation,  foreclosure,  or any other  disposition on or of any or all of the
Collateral  shall  be in the  order  and  manner  and  determined  in  the  sole

                                       29





discretion of the Lender;  provided,  however, that in no event shall the Lender
violate applicable law or exercise rights and remedies other than those provided
in such Security Instruments or otherwise existing at law or in equity.

     8.12  GOVERNING  LAW.  THIS  AGREEMENT  AND THE NOTE  SHALL BE DEEMED TO BE
CONTRACTS  MADE UNDER AND SHALL BE CONSTRUED IN ACCORDANCE  WITH AND GOVERNED BY
THE LA WS OF THE STATE OF TEXAS  WITHOUT  GIVING  EFFECT TO  PRINCIPLES  THEREOF
RELATING TO CONFLICTS OF LAW; PROVIDED,  HOWEVER,  THAT CHAPTER 345 OF THE TEXAS
FINANCE  CODE  (WHICH  REGULATES  CERTAIN  REVOLVING  CREDIT LOAN  ACCOUNTS  AND
REVOLVING TRIP ARTY ACCOUNTS) SHALL NOT APPLY.

     8.13  JURISDICTION  AND VENUE.  ALL ACTIONS OR PROCEEDINGS WITH RESPECT TO,
ARISING  DIRECTLY OR INDIRECTLY IN CONNECTION  WITH, OUT OF, RELATED TO, OR FROM
THIS  AGREEMENT  OR ANY  OTHER  LOAN  DOCUMENT  MAY BE  LITIGATED,  AT THE  SOLE
DISCRETION AND ELECTION OF THE LENDER, IN COURTS HAVING SITUS IN HOUSTON, HARRIS
COUNTY,  TEXAS.  THE BORROWER  HEREBY SUBMITS TO THE  JURISDICTION OF ANY LOCAL,
STATE,  OR FEDERAL COURT LOCATED IN HOUSTON,  HARRIS COUNTY,  TEXAS,  AND HEREBY
WAIVES ANY RIGHTS IT MAY HAVE TO TRANSFER OR CHANGE THE JURISDICTION OR VENUE OF
ANY LITIGATION BROUGHT AGAINST IT BY THE LENDER IN ACCORDANCE WITH THIS SECTION.

     8.14 WAIVER OF RIGHTS TO JURY TRIAL.  THE  BORROWER  AND THE LENDER  HEREBY
KNOWINGLY,  VOLUNTARILY,  INTENTIONALLY,  IRREVOCABLY, AND UNCONDITIONALLY WAIVE
ALL RIGHTS TO TRIAL BY JURY IN ANY ACTION, SUIT,  PROCEEDING,  COUNTERCLAIM,  OR
OTHER  LITIGATION  THAT RELATES TO OR ARISES OUT OF ANY OF THIS AGREEMENT OR ANY
OTHER LOAN DOCUMENT OR THE ACTS OR OMISSIONS OF THE LENDER IN THE ENFORCEMENT OF
ANY OF THE TERMS OR PROVISIONS  OF THIS  AGREEMENT OR ANY OTHER LOAN DOCUMENT OR
OTHERWISE  WITH RESPECT  THERETO.  THE PROVISIONS OF THIS SECTION ARE A MATERIAL
INDUCEMENT FOR THE LENDER ENTERING INTO THIS AGREEMENT.

     8.15 ENTIRE  AGREEMENT.  THIS AGREEMENT  CONSTITUTES  THE ENTIRE  AGREEMENT
BETWEEN  THE  PARTIES  HERETO  WITH  RESPECT  TO THE  SUBJECT  HEREOF  AND SHALL
SUPERSEDE ANY PRIOR  AGREEMENT  BETWEEN THE PARTIES  HERETO,  WHETHER WRITTEN OR
ORAL,  RELATING  TO THE  SUBJECT  HEREOF,  INCLUDING,  WITHOUT  LIMITATION,  THE
CORRESPONDENCE  DATED SEPTEMBER 7,2000,  FROM THE LENDER TO THE BORROWER AND THE
TERM SHEET ENCLOSED THEREWITH.  FURTHERMORE,  IN THIS REGARD, THIS AGREEMENT AND
THE OTHER WRITTEN LOAN DOCUMENTS  REPRESENT,  COLLECTIVELY,  THE FINAL AGREEMENT
AMONG THE  PARTIES  THERETO  AND MAY NOT BE  CONTRADICTED  BY EVIDENCE OF PRIOR,
CONTEMPORANEOUS,  OR SUBSEQUENT  ORAL  AGREEMENTS OF SUCH PARTIES.  THERE ARE NO
UNWRITTEN ORAL AGREEMENTS AMONG SUCH PARTIES.

     8.16 Counterparts.  For the convenience of the parties,  this Agreement may
be executed in multiple  counterparts,  each of which for all purposes  shall be
deemed to be an original,  and all such counterparts  shall together  constitute
but one and the same Agreement.

     IN WITNESS WHEREOF,  this Agreement is deemed executed  effective as of the
date first above written.

                                           BORROWER:

                                           PLAYA MINERALS & ENERGY, INC.

                                           By: /s/ John N. Ehrman
                                               ---------------------------------
                                           Printed Name: John N. Ehrman

                                           Title: President



                                           LENDER:

                                           EQUIVA TRADING COMPANY

                                           By: /s/ David D. Chapman
                                               ---------------------------------
                                           Printed Name: David D. Chapman

                                           Title:  General Manager



                                       31




                                    EXHIBIT I

                                 [FORM OF NOTE]

                                 PROMISSORY NOTE

$1,700,000                       Houston, Texas                November 14, 2000

     FOR VALUE RECEIVED and WITHOUT GRACE, the undersigned ("Maker") promises to
pay to the order of EQUIVA TRADING CQMPANY ("Payee"), at its offices in Houston,
Harris  County,  Texas,  the sum of ONE MILLION SEVEN HUNDRED  THOUSAND  DOLLARS
($1,700,000),  or so much thereof as may be advanced  against this Note pursuant
to the Credit  Agreement  dated of even date  herewith by and between  Maker and
Payee (as amended,  restated,  or  supplemented  from time to time,  the "Credit
Agreement"),  together with interest at the rates and  calculated as provided in
the Credit Agreement.

     Reference  is hereby  made to the Credit  Agreement  for  matters  governed
thereby,  including,  without limitation,  certain events which will entitle the
holder  hereof  to  accelerate  the  maturity  of  all  amounts  due  hereunder.
Capitalized  terms used but not  defined  in this Note  shall have the  meanings
assigned to such terms in the Credit Agreement.

     This Note is issued  pursuant  to, is the "Note"  under,  and is payable as
provided  in  the  Credit  Agreement.  Subject  to  compliance  with  applicable
provisions of the Credit Agreement, Maker may at any time pay the full amount or
any part of this Note  without  the  payment  of any  premium  or fee,  but such
payment  shall  not,  until this Note is fully  paid and  satisfied,  excuse the
payment as it becomes due of any payment on this Note provided for in the Credit
Agreement.

     Without  being  limited  thereto  or  thereby,  this Note is secured by the
Security Instruments.





     THIS NOTE  SHALL BE  GOVERNED  AND  CONTROLLED  BY THE LAWS OF THE STATE OF
TEXAS WITHOUT GIVING EFFECT TO PRINCIPLES  THEREOF RELATING TO CONFLICTS OF LAW;
PROVIDED,  HOWEVER,  THAT CHAPTER 345 OF THE TEXAS FINANCE CODE (WHICH REGULATES
CERTAIN  REVOLVING  CREDIT LOAN ACCOUNTS AND REVOLVING TRIP ARTY ACCOUNTS) SHALL
NOT APPLY TO THIS NOTE.


                                             MAKER:

                                             PLAYA MINERALS & ENERGY, INC.

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








                                   EXHIBIT III

                        [FORM OF COMPLIANCE CERTIFICATE]

                                __________, 19__


EQUIVA TRADING COMPANY
- ----------------------
HOUSTON, TEXAS 77002
Attention:
           ---------------------------------

     Re: Credit  Agreement  dated as of November  10,2000,  by and between PLAYA
     MINERALS & ENERGY,  INC. and EQUIVA TRADING COMPANY (as amended,  restated,
     or  supplemented  from  time  to  time,  the  "Credit Agreement")

Ladies and Gentlemen:

     Pursuant  to  applicable   requirements  of  the  Credit   Agreement,   the
undersigned,  as a Responsible Officer of the Borrower,  hereby certifies to you
the following  information  as true and correct as of the date hereof or for the
period indicated, as the case may be:

     [1. To the best of the knowledge of the undersigned, no Default or Event of
Default  exists  as of the date  hereof  or has  occurred  since the date of our
previous certification to you, if any.

     [1. To the best of the knowledge of the undersigned, the following Defaults
or Events of Default exist as of the date hereof or have occurred since the date
of our  previous  certification  to you, if any, and the actions set forth below
are being taken to remedy such circumstances:

     2. The  compliance  of the  Borrower  with the  financial  covenants of the
Credit Agreement, as of the close of business on .is evidenced by the following:

          (a) 6.13 Current Ratio.  Permit the ratio of Current Assets to Current
     Liabilities to be less than 1.00 to 1.00 at any time.

                                     Actual








     (b) 6.14  Debt  Coverage  Ratio.  Permit,  as of the  close  of any  fiscal
quarter,  the  ratio of (a)  EBITDA  to (b) the sum of  monthly  Borrowing  Base
reductions plus interest.

                                     Actual

     3. No Material  Adverse Effect has occurred since the date of the Financial
Statements dated as of ----------.

     Each  capitalized  term used but not defined  herein shall have the meaning
assigned to such term in the Credit Agreement.


                                           Very truly yours,
                                           PLAYA MINERALS & ENERGY, INC.

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






                                    EXHIBIT V

                                   DISCLOSURES

Section 4.8                        Liabilities

                                   None

                                   Litigation

                                   None

Section 4.12                       Environmental Matters

                                   None

Section 4.17                       Refunds

                                   None

Section 4.20                       Casualties

                                   None

Section 4.22                       Subsidiaries

                                   None







                                   EXHIBIT VI

                           RISK MANAGEMENT INSTRUMENTS



                                         
Trade Date:                                 November 14, 2000

Seller:                                     Playa Energy & Minerals, Inc

Buyer:                                      ETCO

Commodity:                                  NYMEX WTI Instrument: Swap

Swap Price:                                 USD $ _____for the period Dec. 1, 2000 -Dec. 31, 2001
                                            USD $ _____for the period Jan. 1. 2001- Dec. 31, 2002
                                            USD $ _____for the period Jan. 1, 2002- Dec. 31, 2003

Pricing Period:                             As noted above.

Calculation Period(s):                      Single Month Calculation Period

Total Quantity:                             22,750 barrels for the period Dec. 1, 2000- Dec. 31,2001
                                            22,200 barrels for the period Jan. 1, 2001- Dec. 31, 2002
                                            21,000 barrels for the period Jan. 1, 2002- Dec. 31, 2003

Quantity Per
Calculation Period:                         1, 750 barrels for the period Dec. 1, 2000- Dec. 31, 2001
                                            1,850 barrels for the period Jan. 1, 2001- Dec. 31, 2002
                                            1,750 barrels for the period Jan. 1, 2002- Dec. 31, 2003

Price                                       Formula: To be based on the average
                                            of the NYMEX WTI Daily Settlement
                                            prices ("NYMEX WTI Monthly Average")
                                            for the prompt month of the NYMEX
                                            Light Sweet Crude Oil Futures
                                            Contract for each NYMEX Trading Day
                                            for the applicable Calculation
                                            Period.

                                            If the `NYMEX WTI Monthly Average is
                                            greater than the "Swap Price, Seller
                                            will pay Buyer via the formula:
                                            quantity per calculation period
                                            multiplied by (`NYMEX Monthly
                                            Average' less `Swap Price').


                                            If the `NYMEX WTl Monthly Average is
                                            less than the "Swap Price", Buyer
                                            will pay Seller via the formula:
                                            quantity per calculation period
                                            multiplied by (`Swap Price' less
                                            `NYMEX Monthly Average').