EXHIBIT I

                                 [FORM OF NOTE]

                                 PROMISSORY NOTE

$25,000,000                       Houston, Texas               November 14, 2000

          FOR VALUE  RECEIVED  and  WITHOUT  GRACE,  the  undersigned  ("Maker")
promises to pay to the order of BANK ONE, TEXAS, NATIONAL ASSOCIATION ("Payee"),
at its banking quarters in Houston, Harris County, Texas, the sum of TWENTY-FIVE
MILLION  DOLLARS  ($25,000,000),  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  TRIPARTY  ACCOUNTS) SHALL
NOT APPLY TO THIS NOTE.

                                         PLAYA MINERALS & ENERGY, INC.


                                          By:

                                          John N. Ehrman
                                          President and Chief Executive Officer






                                   EXHIBIT II

                           [FORM OF BORROWING REQUEST]

BANK ONE, TEXAS, NATIONAL ASSOCIATION
910 TRAVIS
HOUSTON, TEXAS  77002
Attention:  Energy Group, 6th Floor

Re:       Credit  Agreement  dated as of November 14, 2000, by and between PLAYA
          MINERALS & ENERGY, INC. and BANK ONE, TEXAS,  NATIONAL ASSOCIATION (as
          amended,  restated,  or  supplemented  from time to time,  the "Credit
          Agreement")

Ladies and Gentlemen:

          Pursuant to the Credit Agreement,  the Borrower hereby requests a Loan
on the date and in the amount as follows:

                  Amount:  $
                            ---------------

                  Requested funding date:               , 19
                                           -------------    --

          The  undersigned  certifies  that  [she  is  the  [___________  of the
Borrower, has obtained all consents necessary, and as such [she is authorized to
execute  this  request  on  behalf  of the  Borrower.  The  undersigned  further
certifies,  represents, and warrants on behalf of the Borrower that the Borrower
is entitled to receive the requested  Loan under the terms and conditions of the
Credit Agreement.

          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:
                                              ----------------------------------
                                              John N. Ehrman
                                              President and Chief Executive
                                                Officer






                                   EXHIBIT III

                        [FORM OF COMPLIANCE CERTIFICATE]

                                                             , 19
                                               --------------    --

BANK ONE, TEXAS, NATIONAL ASSOCIATION
910 TRAVIS
HOUSTON, TEXAS  77002
Attention:  Energy Group, 6th Floor

Re:       Credit  Agreement  dated as of November 14, 2000, by and between PLAYA
          MINERALS & ENERGY, INC. and BANK ONE, TEXAS,  NATIONAL ASSOCIATION (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 to be less
                    than 1.0 to 1.0.

                                                    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:
                                                  ------------------------------
                                                  John N. Ehrman
                                                  President and Chief Executive
                                                  Officer






                                   EXHIBIT IV

                          [FORM OF OPINION OF COUNSEL]


                                 [Closing Date]


BANK ONE, TEXAS, NATIONAL ASSOCIATION
910 TRAVIS
HOUSTON, TEXAS  77002
Attention:  Energy Group, 6th Floor

Re:       Credit  Agreement  dated as of November 14, 2000, by and between PLAYA
          MINERALS & ENERGY, INC. and BANK ONE, TEXAS,  NATIONAL ASSOCIATION (as
          amended,  restated,  or  supplemented  from time to time,  the "Credit
          Agreement")


Ladies and Gentlemen:

          We have  acted as  counsel  to PLAYA  MINERALS  &  ENERGY,  INC.  (the
"Borrower")  in  connection  with the  transactions  contemplated  in the Credit
Agreement.  This Opinion is delivered  pursuant to Section  3.1(m) of the Credit
Agreement,  and the  Lender is hereby  authorized  to rely upon this  Opinion in
connection  with the  transactions  contemplated in the Credit  Agreement.  Each
capitalized  term used but not defined herein shall have the meaning assigned to
such term in the Credit Agreement.

          In our  representation  of the Borrower,  we have examined an executed
counterpart of each of the following (the "Loan Documents"):

          (a)       the Credit Agreement;

          (b)       the Note;

          (c)       Mortgage,  Deed of  Trust,  Indenture,  Security  Agreement,
                    Assignment of Production,  and Financing  Statement dated of
                    even date  herewith from the Borrower in favor of the Lender
                    (the "Mortgage"); and

          (d)       Financing   Statements   from  the   Borrower,   as  debtor,
                    constituent to the Mortgage (the "Financing Statement").

          We have  also  examined  the  originals,  or copies  certified  to our
satisfaction,  of such other  records of the  Borrower,  certificates  of public
officials and officers of the Borrower agreements, instruments, and documents as
we have deemed necessary as a basis for the opinions hereinafter expressed.

          In making such examinations, we have, with your permission, assumed:

          (a)       the  genuineness  of all  signatures  to the Loan  Documents
                    other than those of the Borrower;

          (b)       the  authenticity  of  all  documents  submitted  to  us  as
                    originals  and the  conformity  with  the  originals  of all
                    documents submitted to us as copies;

          (c)       the Lender is authorized and has the power to enter into and
                    perform its obligations under the Credit Agreement;

          (d)       the due authorization,  execution,  and delivery of all Loan
                    Documents by each party thereto other than the Borrower; and

          (e)       the Borrower  has title to all Property  covered or affected
                    by the Mortgage.

          Based upon the foregoing and subject to the  qualifications  set forth
herein, we are of the opinion that:

                    1. 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  standing  in all  jurisdictions  wherein  the  ownership  of its
          Property or the operation of its business necessitates same.

                    2. The  execution and delivery by the Borrower of the Credit
          Agreement and the borrowings thereunder, the execution and delivery by
          the  Borrower of the other Loan  Documents  to which the Borrower is a
          party,  and the  payment and  performance  of all  Obligations  of the
          Borrower  thereunder  are within the power of the Borrower,  have been
          duly  authorized by all  necessary  corporate  action,  and do not (a)
          require the consent of any Governmental  Authority,  (b) contravene or
          conflict with any  Requirement of Law, (c) to our knowledge  after due
          inquiry,  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 upon any
          Property  of the  Borrower  other  than as  contemplated  by the  Loan
          Documents.

                    3.  The Loan  Documents  to which  the  Borrower  is a party
          constitute  legal,  valid,  and binding  obligations  of the Borrower,
          enforceable  against the Borrower in accordance with their  respective
          terms.

                    4. The forms of the Mortgage and the Financing Statement and
          the description of the Mortgaged  Property (as such term is defined in
          the Mortgage  and so used herein)  situated in the State of Texas (the
          "State")  satisfy all applicable  Requirements of Law of the State and
          are  legally  sufficient  under the laws of the  State to  enable  the
          Lender to realize the practical  benefits  purported to be afforded by
          the Mortgage.

                    5. The  Mortgage  creates  a valid  lien  upon and  security
          interest in all Mortgaged Property situated in the State to secure the
          Indebtedness  (as such term is  defined  in the  Mortgage  and so used
          herein).

                    6.  The  Mortgage  and  the   Financing   Statement  are  in
          satisfactory  form for filing and  recording in the offices  described
          below.

                    7. The filing and/or  recording,  as the case may be, of (a)
          the  Mortgage in the office of the county  clerk of each county in the
          State in which any portion of the Mortgaged  Property is located,  and
          as a financing statement and utility security instrument in the office
          of the  Secretary  of  State  of the  State,  and  (b)  the  Financing
          Statement in the Uniform Commercial Code records in each county in the
          State in which any  portion of the  Mortgaged  Property is located are
          the only  recordings or filings in the State  necessary to perfect the
          liens and security  interests in the Mortgaged Property created by the
          Mortgage  or to permit  the  Lender to enforce in the State its rights
          under the Mortgage.  No subsequent filing,  re-filing,  recording,  or
          re-recording  will be required  in the State in order to continue  the
          perfection of the liens and security interests created by the Mortgage
          except that (a) a continuation statement must be filed with respect to
          the  Mortgage  filed as a  financing  statement  in the  office of the
          Secretary  of State of the State  and with  respect  to the  Financing
          Statement in the Uniform Commercial Code records in each county in the
          State in which any portion of the Mortgaged Property is located,  each
          within six months prior to the  expiration of five years from the date
          of the relevant initial financing  statement filing,  (b) a subsequent
          continuation  statement  must be filed  within six months prior to the
          expiration of each subsequent  five-year  period from the date of each
          initial financing  statement filing, and (c) amendments or supplements
          to the  Mortgage  filed as a  financing  statement  and the  Financing
          Statement and/or additional financing statements may be required to be
          filed in the event of a change in the name, identity,  or structure of
          the Borrower or in the event the financing  statement filing otherwise
          becomes inaccurate or incomplete.

                    8. To our knowledge  after due inquiry,  except as disclosed
          in Exhibit to the Credit  Agreement,  no litigation or other action of
          any nature  affecting the Borrower is pending before any  Governmental
          Authority or threatened  against the Borrower.  To our knowledge after
          due inquiry, 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 any  Properties of the Borrower  other than
          such as relate  generally  to Persons  engaged in business  activities
          similar to those conducted by the Borrower.

                    9.   No   authorization,   consent,   approval,   exemption,
          franchise,  permit or  license  of, or filing  (other  than  filing of
          Security   Instruments  in  appropriate   filing  offices)  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  thereby,  or the payment  performance by the Borrower of
          the Obligations.

                    10. No transaction  contemplated by the Loan Documents is in
          violation of any regulations  promulgated by the Board of Governors of
          the Federal Reserve System, including, without limitation, Regulations
          G, T, U, or X.

                    11. 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.

                    12.  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.

          The   opinions   expressed   herein  are  subject  to  the   following
qualifications and limitations:

          A.        We are  licensed to practice law only in the State and other
                    jurisdictions  whose laws are not applicable to the opinions
                    expressed herein;  accordingly,  the foregoing  opinions are
                    limited solely to the laws of the State,  applicable  United
                    States federal law, and the corporation laws of the State of
                    [_______________.

          B.        The validity, binding effect, and enforceability of the Loan
                    Documents   may  be  limited  or  affected  by   bankruptcy,
                    insolvency,  moratorium,  reorganization,  or other  similar
                    laws  affecting  rights of creditors  generally,  including,
                    without limitation, statutes or rules of law which limit the
                    effect  of  waivers  of  rights  by  a  debtor  or  grantor;
                    provided, however, that the limitations and other effects of
                    such  statutes or rules of law upon the validity and binding
                    effect of the Loan  Documents  should not differ  materially
                    from the  limitations  and other effects of such statutes or
                    rules of law upon the validity and binding  effect of credit
                    agreements,   promissory  notes,  and  security  instruments
                    generally.

          C.        The  enforceability  of the  respective  obligations  of the
                    Borrower  under the Loan  Documents  is  subject  to general
                    principles  of  equity  (whether  such   enforceability   is
                    considered in a suit in equity or at law).

          This  Opinion is  furnished by us solely for the benefit of the Lender
in connection  with the  transactions  contemplated by the Loan Documents and is
not to be quoted in whole or in part or  otherwise  referred to or  disclosed in
any other transaction.

                                                     Very truly yours,







                                    EXHIBIT V


                                   DISCLOSURES


Section                    Liabilities

                                                         None

                           Litigation

                                                         None

Section                    Environmental Matters

                                                         None

Section                    Refunds

                                                         None

Section                    Gas Contracts

                                                         None

Section                    Casualties

                                                         None

Section                    Subsidiaries

                                                         None