Exhibit 10(a)

                        NOTE PURCHASE AND LOAN AGREEMENT


                                       for


                           SEVEN SEAS PETROLEUM INC.,
               a Cayman Islands exempted company limited by shares



                                  July 9, 2001



                           COMMERCIAL LAW GROUP, P.C.
                            ATTORNEYS AND COUNSELORS
   2725 Oklahoma Tower o 210 Park Avenue o Oklahoma City, Oklahoma 73102-5604
              Telephone (405) 232-3001 o Telecopier (405) 232-5553



                                TABLE OF CONTENTS

1.       Purchase; Authorization...........................................1

2.       Closing...........................................................1

3.       Corporation's Representations and Warranties.  ...................1

         3.1      Organization and Standing................................2
         3.2      Subsidiaries.............................................2
         3.3      Corporate Power..........................................2
         3.4      Investments..............................................3
         3.5      Minute Books.............................................3
         3.6      Capitalization...........................................3
         3.7      Subsidiary Capitalization................................4
         3.8      No Violation.............................................5
         3.9      Validity.................................................5
         3.10     SEC Documents............................................6
         3.11     Financial Statements.....................................6
         3.12     Absence of Undisclosed Liabilities.......................6
         3.13     Absence of Certain Changes...............................7
         3.14     Contracts, Leases, and Other Agreements..................7
         3.15     ERISA....................................................8
         3.16     Arrangements with Related Parties........................8
         3.17     Taxes....................................................9
         3.18     Insurance.  .............................................9
         3.19     Litigation...............................................9
         3.20     Consents................................................10
         3.21     Title to Properties; Liens and Encumbrances.............10
         3.22     Compliance with Law and Other Instruments...............10
         3.23     Registration Rights.....................................11
         3.24     Federal Reserve Regulations.............................11
         3.25     Reserve Information.....................................11
         3.26     Securities Classes......................................11
         3.27     Solicitation............................................12
         3.28     Registration Requirements...............................12
         3.29     Certificates............................................12
         3.30     Full Disclosure.........................................12
         3.31     Acknowledgment..........................................12

4.       Lender's Representations and Warranties..........................12

         4.1      Authorization; Power....................................13
         4.2      Investment Representations..............................13

                                      - i -


                  4.2.1    Economic Risk..................................13
                  4.2.2    Acquisition for Own Account....................13
                  4.2.3    Protection.....................................13
                  4.2.4    Corporation Information........................13
                  4.2.5    Residence......................................14

5.       Lender's Conditions..............................................14

         5.1      Representations and Warranties Correct..................14
         5.2      Performance.............................................14
         5.3      Compliance Certificate..................................14
         5.4      Omnibus Certificate.....................................14
         5.5      Adverse Events..........................................15
         5.6      Legal Opinion...........................................15
         5.7      Comfort Letter..........................................20
         5.8      Legal Investment........................................20
         5.9      Qualifications..........................................20
         5.10     Due Diligence...........................................20
         5.11     Expenses................................................20
         5.12     Purchase of Series B Notes..............................20
         5.13     Proceedings and Documents...............................20
         5.14     Collateral Perfection and Put Option....................21
         5.15     Amendments of Articles..................................21

6.       Corporation's Conditions.........................................21

         6.1      Representations and Warranties True.....................21
         6.2      Performance of Obligations..............................21
         6.3      Payment.................................................21
         6.4      Consents, Permits and Waivers...........................21
         6.5      Fairness Opinion........................................21
         6.6      Certain Collateral Agreements...........................21

7.       Affirmative Covenants............................................22

         7.1      Financial Statements and Information....................22

                  7.1.1    SEC Filings....................................22
                  7.1.2    Compliance Certificate.........................22
                  7.1.3    Budget.........................................22
                  7.1.4    Auditors Reports...............................22
                  7.1.5    Third Party Information........................23
                  7.1.6    Litigation.....................................23
                  7.1.7    Material Adverse Developments..................23
                  7.1.8    Other Information..............................24

                                     - ii -

         7.2      Accounting..............................................24
         7.3      Insurance...............................................24
         7.4      Payment of Taxes........................................24
         7.5      Compliance With Laws....................................24
         7.6      Corporate Existence; Property and Operations............24
         7.7      Inspection and Other Rights.............................25
         7.8      Use of Proceeds.  ......................................25
         7.9      Escrow of Interest Payment..............................25
         7.10     Charter Amendments......................................25
         7.11     Exemption Maintenance...................................26
         7.12     Pipeline Operation......................................26
         7.13     Dormant Subsidiaries....................................26
         7.14     Production Proceeds.....................................26

8.       Corporation's Negative Covenants.................................26

         8.1      Dividends...............................................26
         8.2      Redemptions.............................................27
         8.3      Mergers.................................................27
         8.4      Sale of Assets..........................................27
         8.5      Liquidations............................................27
         8.6      Charter Amendments......................................27
         8.7      Affiliate Transactions..................................27
         8.8      Investments.............................................27
         8.9      Capital Expenditures....................................28
         8.10     Loans...................................................28
         8.11     Other Business..........................................28
         8.12     Subsidiaries............................................28
         8.13     Indebtedness............................................28
         8.14     Related Agreements.  ...................................28
         8.15     Restrictive Agreements..................................28
         8.16     Liens...................................................29
         8.17     Transactions............................................29
         8.18     Participating Preferred Stock...........................29
         8.19     Debt Prepayment.........................................29
         8.20     No Excess Working Capital to Subsidiaries...............29

9.       Related Agreements...............................................29

10.      Payment or Exchange of Series B Notes............................29

11.      Default..........................................................29

         11.1     Nonpayment of CEC Note..................................30
         11.2     Breach of Agreement.....................................30
         11.3     Representations and Warranties..........................30

                                     - iii -


         11.4     Material Agreements.....................................30
         11.5     Indebtedness............................................30
         11.6     Insolvency..............................................30
         11.7     Bankruptcy..............................................30
         11.8     Receivership............................................31
         11.9     Judgment................................................31
         11.10    Concession Contracts....................................31
         11.11    Indentures..............................................31
         11.12    Change of Control.......................................31
         11.13    Opportunity to Cure.....................................32

12.      Remedies.........................................................32

         12.1     Exercise Remedy.........................................32
         12.2     Selective Enforcement...................................32
         12.3     Waiver of Default.......................................32

13.      Agent Appointment; Jurisdiction..................................32

14.      Indemnification..................................................33

         14.1     Procedure...............................................34
         14.2     Environmental and Governmental.  .......................34
         14.3     Other Remedies..........................................34

15.      Effectiveness of Agreement and Termination.......................34

16.      Miscellaneous....................................................35

         16.1     Fees and Expenses.......................................35
         16.2     Consent to Amendments; Waivers..........................35
         16.3     Representations and Warranties..........................36
         16.4     Successors and Assigns..................................36
         16.5     Severability............................................36
         16.6     Construction; Currency..................................36
         16.7     Notices.................................................36
         16.8     Governing Law...........................................36
         16.9     Exhibits and Schedules..................................36
         16.10    Exchange of Certificates................................37
         16.11    Confidentiality.........................................37
         16.12    Public Announcements....................................37
         16.13    Final Agreement.........................................37
         16.14    Execution in Counterparts...............................38
         16.15    ACKNOWLEDGMENTS AND ADMISSIONS..........................38
         16.16    JOINT ACKNOWLEDGMENT....................................38
         16.17    WAIVER OF JURY TRIAL, PUNITIVE DAMAGES, ETC.............38

                                     - iv -


                            SEVEN SEAS PETROLEUM INC.
                        NOTE PURCHASE AND LOAN AGREEMENT

     THIS AGREEMENT is entered into  effective July 9, 2001,  between SEVEN SEAS
PETROLEUM  INC.,  a Cayman  Islands  exempted  company  limited  by shares  (the
"Corporation")  and all of the  Subsidiaries  of the  Corporation (as defined in
paragraph 3.2) and CHESAPEAKE ENERGY CORPORATION,  an Oklahoma  corporation (the
"Lender").

                                 R E C I T A L S

     A. In order to  raise  additional  funds  to  implement  the  Corporation's
business  plan,  the  Corporation  desires to: (i) issue the  Corporation's  12%
Senior  Secured Note due 2004 in the amount of  TWENTY-TWO  MILLION FIVE HUNDRED
THOUSAND  DOLLARS  ($22,500,000.00)  (the "CEC Note")  coupled  with  detachable
Warrants to purchase  twelve  million six hundred  twelve  thousand  one hundred
forty (12,612,140) shares (the "Warrants") of the Corporation's ordinary shares,
par  value  $0.001  per  share  (the  "Common   Stock");   and  (ii)  issue  the
Corporation's  12%  Series  B  Senior  Secured  Notes  due  on  the  earlier  of
consummation of the Rights Offering (as hereinafter defined) or November 7, 2004
in  the  amount  of  TWENTY  TWO   MILLION   FIVE   HUNDRED   THOUSAND   DOLLARS
($22,500,000.00) (the "Series B Notes").

     B. The Lender desires to purchase from the  Corporation and the Corporation
desires  to issue  and  sell to the  Lender:  (a) the CEC Note in the  principal
amount of TWENTY-TWO MILLION FIVE HUNDRED THOUSAND DOLLARS ($22,500,000.00); and
(b) Warrants to purchase  twelve million six hundred twelve thousand one hundred
forty  (12,612,140)  shares (as  adjusted)  of Common  Stock,  for an  aggregate
purchase   price  of   TWENTY-TWO   MILLION   FIVE  HUNDRED   THOUSAND   DOLLARS
($22,500,000.00).

     NOW THEREFORE,  in  consideration  of the premises and the mutual covenants
herein  contained  and other good and  valuable  consideration,  the receipt and
sufficiency of which are hereby acknowledged, the parties agree as follows:

1.  Purchase;  Authorization.  Subject  to the  terms and  conditions  set forth
herein,  the Lender agrees to purchase from the  Corporation and the Corporation
hereby  agrees to issue and sell to the  Lender,  the CEC Note in the  principal
amount of Twenty-Two Million Five Hundred Thousand Dollars  ($22,500,000.00) and
the Warrants for an aggregate  purchase price of Twenty-Two Million Five Hundred
Thousand  Dollars  ($22,500,000.00).   Prior  to  the  Closing  (as  hereinafter
defined),  the Corporation will: (a) duly authorize the issuance of the CEC Note
and the Warrants to the Lender; and (b) duly authorize and reserve the shares of
Common  Stock  to be  issued  on the  exercise  of the  Warrants  (the  "Warrant
Shares").

2. Closing.  The  consummation  of the purchase and sale of the CEC Note and the
Warrants to the Lender and the sale of the Series B Notes (the  "Closing")  will
be held at the offices of Commercial  Law Group,  P.C.,  210 Park Avenue,  Suite
2725,  Oklahoma City, Oklahoma 73102, on the earlier of: (a) the date all of the
conditions  precedent  set  forth in  paragraph  5 of this  Agreement  have been
performed to the reasonable  satisfaction  of the Lender or waived in writing by
the Lender;  and (b) July 23, 2001,  at 10:00 a.m.  local time, or at such other
time,  date and place as may be agreed to by the Corporation and the Lender (the
"Closing Date"). At the Closing, the Corporation will deliver to the Lender: (y)
the CEC Note in substantially the form at Exhibit "A" attached as a part hereof;
and (z) the Warrants in substantially the form at Exhibit "B" attached as a part
hereof,  both duly  executed  and  registered  in the name of the  Lender or the
Lender's  nominee.  The Lender will deliver to the  Corporation  in  immediately
available  funds  the  purchase  price for the CEC Note and the  Warrants  to be
acquired by the Lender.

3. Corporation's  Representations and Warranties. As an inducement to the Lender
to enter  into and  perform  this  Agreement,  the  Corporation  and each of the
Subsidiaries  hereby  severally  represent  and warrant to and covenant with the
Lender as follows:

     3.1  Organization  and Standing.  The  Corporation  is an exempted  company
          limited  by  shares  duly  organized,  validly  existing  and in  good
          standing  under the laws of the Cayman  Islands and  continues  in the
          Cayman  Islands  with all of the  legal  and  contractual  rights  and
          interests the Corporation  held as a Yukon,  Canada  corporation.  The
          Corporation  has the  requisite  power and authority to own all of the
          Corporation's  properties,  to conduct the  Corporation's  business as
          presently being conducted and to conduct the Corporation's business as
          it is proposed to be conducted.  The  Corporation is duly qualified to
          do  business  in those  jurisdictions  listed in  Schedule  "3.1." The
          Corporation  does not and will not  have any  material  properties  or
          operations  elsewhere  and  the  Corporation  is not and  will  not be
          subject to any material liability or disability in conducting business
          by reason of any failure to obtain any qualification to do business in
          any other  jurisdiction.  The Corporation  conducts no business in any
          jurisdiction except through the Subsidiaries.

     3.2  Subsidiaries.  Except for the subsidiaries set forth on Schedule "3.2"
          attached as a part hereof in which the  Corporation  directly owns one
          hundred percent (100%) of the legal and beneficial capital equity (the
          "Subsidiaries"),  the  Corporation  does not directly or indirectly or
          through  any entity or person  own any voting  power or capital of any
          corporation,  association,  partnership,  limited liability company or
          other  business  entity.  Each  Subsidiary is a  corporation  or other
          entity duly organized, validly existing and in good standing under the
          laws of the jurisdiction of its organization  listed on Schedule "3.2"
          and  has  the  requisite  power  and  authority  to own  all  of  such
          Subsidiary's  properties,  to conduct  such  Subsidiary's  business as
          presently being conducted and to conduct such Subsidiary's business as
          it is proposed to be conducted.  Each  Subsidiary is duly qualified to
          do  business  in those  jurisdictions  listed  in  Schedule  "3.2." No
          Subsidiary  has or will have any material  properties or operations in
          any  jurisdiction  not listed on Schedule "3.2" and each Subsidiary is
          not and will not be subject to any material liability or disability in
          conducting  business by reason of failure to obtain any  qualification
          to do any business in any other  jurisdiction.  As of the Closing Date
          and until  the CEC Note is paid in full,  the  Subsidiaries  listed on
          Schedule "3.2" as dormant or inactive will remain dormant and inactive
          and no business will be conducted  directly or indirectly  by, through
          or under any such Subsidiaries.

     3.3  Corporate Power. The Corporation has all requisite power and authority
          to:  (a) enter  into this  Agreement  and each of the  agreements  and
          instruments to be executed in connection herewith;  (b) issue and sell
          the CEC Note and the Warrants;  (c) issue the Warrant Shares;  and (d)
          carry  out  and  perform  its  obligations  under  the  terms  of this
          Agreement and any other document to be executed in connection herewith
          including,   without  implied  limitation,  that  certain  Pledge  and
          Security  Agreement,  those  certain Deed of Mortgage  over Shares (or
          Charge Over Shares to the extent  agreed to by the  parties) and other
          collateral documents,  each dated on or about the Closing Date between
          the  Corporation and the Lender,  as collateral  agent, at Exhibit "C"
          attached as a part hereof (collectively, the "Pledge Agreement"), that
          certain  Shareholder's  Rights Agreement dated on or about the Closing
          Date between the Corporation and the Lender at Exhibit "D" attached as
          a part hereof (the "Shareholder's  Rights Agreement") and that certain
          Registration  Rights  Agreement  dated on or about  the  Closing  Date
          between the  Corporation  and the Lender at Exhibit "E"  attached as a
          part hereof (the "Registration  Agreement") and the Collateral Sharing
          and Agency Agreement dated on or about the Closing Date between Lender
          and the trustee  for the New  Indenture  at Exhibit "F"  attached as a
          part hereof (the "Collateral  Sharing Agreement" and together with the
          Pledge Agreement, the Shareholder's Rights Agreement, the Registration
          Agreement and any and all other documents and instruments executed and
          delivered in  connection  therewith,  the "Related  Agreements").  The
          Corporation   has  taken  all  actions   necessary  to  authorize  the
          execution,  delivery and performance of this Agreement and the Related
          Agreements,  the consummation of the transactions  contemplated hereby
          and  thereby  and the  issuance  and  delivery  of the CEC  Note,  the
          Warrants  and the  Warrant  Shares.  This  Agreement  and the  Related
          Agreements   are  legal,   valid  and  binding   obligations   of  the
          Corporation,  enforceable  against the  Corporation in accordance with
          their  terms  except as the  enforceability  thereof may be limited by
          bankruptcy,  insolvency or similar laws  affecting  creditors'  rights
          generally.

     3.4  Investments.  Neither  the  Corporation  nor the  Subsidiaries  own of
          record or  beneficially  any Investment  (as hereafter  defined) other
          than  Investments  in the  Subsidiaries  and  Investments  of the type
          permitted  under  paragraph  8.8 of  this  Agreement  and  Investments
          disclosed  in the  Corporation's  most recent 10-Q filed with the SEC.
          For purposes of this Agreement the term  "Investment"  means:  (a) all
          investments in the form of loans,  advances or capital  contributions;
          (b) all guarantees of indebtedness  or other  obligations of any other
          person  or  entity;  (c) all  purchases  (or  other  acquisitions  for
          consideration) of capitalized assets,  indebtedness,  capital stock or
          other  securities  of any other  person or  entity;  and (d) all other
          items that would be  classified  as  investments  (including,  without
          limitation,  purchases  of  assets  outside  the  ordinary  course  of
          business) or advances on a balance sheet  prepared in accordance  with
          generally  accepted   accounting   principles  in  the  United  States
          ("GAAP").

     3.5  Minute Books.  The minute books of the Corporation  contain a complete
          and correct  summary in all  material  respects of all meetings of the
          Corporation's  Board of Directors (the "Board") and the  Corporation's
          shareholders since the inception of the Corporation.  The minute books
          of each  Subsidiary  contain a  complete  and  correct  summary in all
          material  respects of all  meetings of the board of  directors of such
          Subsidiary and such Subsidiary's  shareholders  since the inception of
          such  Subsidiary.  The  originals  or true and correct  copies of such
          minute books have been made available to the Lender.

     3.6  Capitalization.  As  of  the  Closing,  the  Corporation's  authorized
          capital  stock  will  consist  of two  hundred  million  (200,000,000)
          shares, par value $0.001 per share, of which one hundred fifty million
          (150,000,000)  shares  are  designated  as  ordinary  shares and fifty
          million  (50,000,000) are shares which may be designated by the Board.
          After consummation of the transactions  contemplated by this Agreement
          and the Rights  Offering,  the only shares of capital stock issued and
          outstanding will be 37,836,420 shares of fully paid and non-assessable
          Common  Stock,  there will be no shares of any other  class of capital
          stock or equity  issued or  outstanding  and the only shares of Common
          Stock  reserved  for  issuance or  committed to be issued will be: (a)
          shares   issuable  upon  the  exercise  of  stock  options  under  the
          Corporation's  1995,  1996 and 1997 stock  option  plans  under  which
          options to purchase 4,686,934 shares of Common Stock have been granted
          at exercise  prices  reflected in Schedule "3.6"  attached  hereto and
          made a part hereof and 669,954 shares are available for option grants;
          (b) 12,612,140 shares issuable upon the exercise of the Warrants;  and
          (c) 12,612,140  shares issuable upon the exercise of warrants (the "RO
          Warrant  Shares") to be issued in connection  with the Rights Offering
          (the "RO Warrants").  As of the Closing, there will be no declared but
          unpaid  dividends or  undeclared  dividend  arrearage on any shares of
          capital  stock of the  Corporation.  In  addition,  as of the Closing,
          except as set forth in this paragraph,  there will not exist any stock
          appreciation   rights,   phantom  stock  plans,   preemptive   rights,
          conversion rights, options,  warrants or agreements granted, issued by
          or binding on the  Corporation  for the purchase or acquisition of any
          shares of its  capital  stock  other than those  issued,  reserved  or
          committed  to be  issued  pursuant  to  this  Agreement,  the  Related
          Agreements and pursuant to that certain rights  offering to be made to
          the Common  Stock  holders of the  Corporation  pursuant  to which the
          shareholders of the Corporation  will be granted the right to purchase
          an  approximate  pro rata share of the  Corporation's  Series A Senior
          Secured Notes due 2004 in the aggregate principal amount of Twenty-Two
          Million Five Hundred Thousand Dollars  ($22,500,000.00) (the "Series A
          Notes")  coupled with  detachable RO Warrants (the "Rights  Offering")
          all on terms substantially similar to the terms of this Agreement with
          the proceeds to be used  exclusively  to refinance the Series B Notes.
          All  outstanding   securities  of  the  Corporation   were  issued  in
          compliance with all Cayman Islands and United States federal and state
          securities laws.

     3.7  Subsidiary  Capitalization.  Each Subsidiary's authorized,  issued and
          outstanding capital stock or other equity interests is as set forth on
          Schedule "3.7" attached as a part hereof.  The issued and  outstanding
          shares of capital stock or other equity  interests of each  Subsidiary
          are as set forth on  Schedule  "3.7" are owned of record  one  hundred
          percent (100%) by the Corporation legally and beneficially.  As of the
          Closing,  there will be no declared but unpaid dividends or undeclared
          dividend  arrearage  on any  shares of capital  stock or other  equity
          interests of any of the Subsidiaries. As of the Closing there will not
          exist any stock appreciation rights,  phantom stock plans,  preemptive
          rights,  conversion rights,  options,  warrants or agreements granted,
          issued by or binding on any Subsidiary for the purchase or acquisition
          of any  shares  of such  Subsidiary's  capital  stock or other  equity
          interests.  All outstanding  securities of each Subsidiary were issued
          in  compliance  with all laws of the  jurisdiction  under  which  such
          Subsidiary was formed and United States  federal and state  securities
          laws.

     3.8  No Violation. The execution, delivery, consummation and performance of
          this Agreement,  the CEC Note, the Warrants and the Related Agreements
          and the  transactions  contemplated  thereby will not (with or without
          notice, the passage of time or both): (a) conflict with or result in a
          breach of any provision of the  Memorandum of  Association or Articles
          of  Association  of the  Corporation  or the  formation  or  governing
          documents of any Subsidiary; (b) result in a default, give rise in any
          third party of the right to exercise  any  termination,  cancellation,
          acceleration  or any other remedy,  or require any consent or approval
          under the terms, conditions or provisions of any note, bond, mortgage,
          indenture,  loan, hedging arrangement,  license,  agreement,  lease or
          other  instrument or obligation  which is binding on the  Corporation,
          any  Subsidiary  or  any  of  their  assets  and  is  material  to the
          Corporation  and the  Subsidiaries  taken as a whole;  (c) violate any
          law,  judgment,  order, writ,  injunction,  decree,  statute,  rule or
          regulation  of  any  court,   administrative  agency,  bureau,  board,
          commission, office, authority, department or other governmental entity
          applicable to the  Corporation,  any Subsidiary or any of their assets
          which,  singly or in the  aggregate,  would  have a  Material  Adverse
          Effect (as hereinafter defined);  (d) violate the listing rules of the
          American Stock Exchange ("AMEX") or adversely impact the Corporation's
          listing  agreement with AMEX; or (e) require the Corporation or any of
          the  Subsidiaries  to guarantee  any  indebtedness  or grant a lien or
          encumbrance  on any of their  respective  assets  except  as  provided
          herein to secure the  obligations  hereunder.  Neither the Corporation
          nor any of the Subsidiaries has violated any foreign,  federal,  state
          or local law or regulation  relating to the protection of human health
          and safety,  the  environment  or  hazardous  or toxic  substances  or
          wastes,  pollutants or  contaminants,  any  provisions of the Employee
          Retirement Income Security Act of 1974, as amended,  or any provisions
          of the  Foreign  Corrupt  Practices  Act or the  rules or  regulations
          promulgated thereunder, except for such violations which, singly or in
          the aggregate, would not have a Material Adverse Effect.

     3.9  Validity.   The  Warrants  and  the  Warrant  Shares  when  issued  in
          accordance   with  the  terms  of  this   Agreement  and  the  Related
          Agreements,   will  be  duly   and   validly   issued,   fully   paid,
          non-assessable   and  free  and  clear  of  all   liens,   claims  and
          encumbrances.  The CEC Note,  the  Warrants,  this  Agreement  and the
          Related Agreements have been duly authorized and, on the Closing Date,
          will have been validly  executed and delivered by the  Corporation and
          this  Agreement  has been duly  authorized,  executed and delivered by
          each of the Subsidiaries.  The CEC Note, the Warrants,  this Agreement
          and the Related  Agreements will be valid and binding  obligations and
          agreements of the Corporation  enforceable  against the Corporation in
          accordance with their respective terms,  except as the  enforceability
          thereof  may be  limited by  bankruptcy,  insolvency  or similar  laws
          affecting creditors' rights generally.  This Agreement will be a valid
          and  binding  obligation  and  agreement  of each of the  Subsidiaries
          enforceable  against each  Subsidiary  in  accordance  with its terms,
          except as the  enforceability  thereof  may be limited by  bankruptcy,
          insolvency or similar laws affecting  creditors' rights generally.  On
          the Closing Date, to the extent applicable thereto,  the CEC Note, the
          Warrants,  this Agreement and the Related  Agreements  will conform in
          all material  respects to the rules and  regulations of the Securities
          and Exchange Commission (the "SEC").

     3.10 SEC Documents. The Lender has had or will have available to the Lender
          a  true,   correct  and  complete  copy  of  each  report,   schedule,
          registration  statement and definitive  proxy  statement  filed by the
          Corporation  with the SEC  since  December  31,  1997 and prior to the
          Closing Date (the "SEC Documents"), which are all the documents (other
          than  preliminary  material)  that  the  Corporation  was or  will  be
          required to file with the SEC since  December 31, 1997.  Except as set
          forth in Schedule "3.10" attached hereto as a part hereof, as of their
          respective  dates,  the SEC  Documents  complied or will comply in all
          material respects with the requirements of the Securities Act of 1933,
          as amended (the "Securities  Act"), or the Securities  Exchange Act of
          1934,  as amended (the  "Exchange  Act"),  as the case may be, and the
          rules and  regulations  of the SEC  thereunder  applicable to such SEC
          Documents,  and  none  of the  SEC  Documents  contained  as of  their
          respective dates any untrue statement of a material fact or omitted or
          will omit to state a material  fact  required to be stated  therein or
          necessary   to  make  the   statements   therein,   in  light  of  the
          circumstances under which they were made, not misleading.

     3.11 Financial  Statements.  The financial  statements  of the  Corporation
          included in the SEC Documents (the "Financial  Statements")  have been
          prepared  in  accordance  with  the  applicable  published  rules  and
          regulations  of the SEC with respect  thereto and in  accordance  with
          GAAP applied on a consistent basis during the periods involved (except
          as may be indicated in the notes  thereto or, in the case of unaudited
          statements,  as permitted by Rule 10-01 of Regulation  S-X of the SEC)
          and fairly  present  in all  material  respects,  in  accordance  with
          applicable  requirements of GAAP (in the case of unaudited statements,
          subject to normal, recurring adjustments),  the consolidated financial
          position  of  the  Corporation  and  the   Subsidiaries  as  of  their
          respective  dates and the  consolidated  results of operations and the
          consolidated  cash flows of the Corporation and the  Subsidiaries  for
          the periods presented therein. The unaudited financials  statements of
          each of the  Subsidiaries  which have been  provided to the Lender are
          correct and complete  and fairly  reflect the  financial  condition of
          each of the Subsidiaries as of the date thereof and have been prepared
          in conformity with accounting principles applied on a basis consistent
          with that of preceding periods.

     3.12 Absence of Undisclosed Liabilities. As of the Closing, the Corporation
          and each  Subsidiary  will not have any  material  debt,  liability or
          obligation  of any  nature  (whether  accrued,  absolute,  contingent,
          direct, indirect, perfected, inchoate,  unliquidated, due or to become
          due) arising out of any transactions,  series of transactions,  action
          or inaction or facts or conditions existing on or prior to the Closing
          (regardless of when such liability or obligation is asserted)  except:
          (a)  as  listed  on  Schedule  "3.12"  attached  as a part  hereof  or
          disclosed in the Corporation's most recent 10-Q filed with the SEC; or
          (b) clearly  and  accurately  disclosed  in and  accounted  for in the
          Financial  Statements.  Except for the foregoing,  the Corporation and
          its officers and directors do not know, and have no reasonable grounds
          to know, of any basis for the assertion against the Corporation or any
          Subsidiary of any material  liabilities or obligations not clearly and
          adequately   reflected,   reserved  and  disclosed  in  the  Financial
          Statements or the SEC Documents.

     3.13 Absence  of Certain  Changes.  As of the  Closing  there will not have
          occurred  since the  Corporation's  Annual Report on Form 10-K for the
          year ended December 31, 2000: (a) any change, occurrence, condition or
          development  that will or is likely to have a Material Adverse Effect;
          (b)  any  dividend,   distribution,   recapitalization,   combination,
          redemption,  subdivision or purchase with respect to any shares of the
          capital stock of the Corporation or any Subsidiary, except between and
          among the Corporation and the  Subsidiaries;  (c) any new indebtedness
          for borrowed  money  incurred by the  Corporation  or any  Subsidiary,
          except between and among the Corporation and the Subsidiaries; (d) any
          sale, transfer or lease of any of the assets of the Corporation or any
          Subsidiary,  except in the ordinary course of business or as set forth
          in Schedule  "3.13"  attached  hereto and made a part hereof;  (e) any
          mortgage or pledge of, grant of security  interest in or other lien or
          encumbrance  against  any of the  assets  of  the  Corporation  or any
          Subsidiary; (f) any cancellation, compromise, release or waiver of any
          material claims,  indebtedness or obligations owing to the Corporation
          or any Subsidiary except (whether pursuant to a contract  agreement or
          otherwise) as a result of payments of such obligations in the ordinary
          course of business  consistent with past  practices;  (g) any material
          increase  or  change,  (or offer or  promise  whether  or not  legally
          binding) in any salary, compensation or employee benefits with respect
          to any  employee  of the  Corporation  or any  Subsidiary  outside the
          ordinary course; (h) any physical damage, destruction or loss (whether
          or not covered by insurance) with respect to the properties,  business
          or  prospects  of the  Corporation  which  will or is likely to have a
          Material Adverse Effect; (i) any changes in the accounting principles,
          methods  or  practices  utilized  by  the  Corporation  or  any of its
          Subsidiaries  (including  depreciation  or  amortization  policies  or
          rates);   (j)  any  actual  or   threatened   cancellation,   default,
          termination  or  dispute  under  any  production   sharing   contract,
          Concession Agreements (as hereinafter defined), exploration agreement,
          transportation  license or similar  agreement  with the  government of
          Colombia or Empresa Colombiana de Petroleos ("Ecopetrol") or under any
          other material agreement, contract or relationship which is binding on
          the  Corporation,  any  Subsidiary  or their assets which would have a
          Material Adverse Effect; or (k) any action taken by the Corporation or
          its Subsidiaries with respect to the foregoing.

     3.14 Contracts,  Leases,  and  Other  Agreements.  Except  as set  forth in
          Schedule  "3.14" or Schedule  "3.15"  attached as a part hereof and in
          the  Corporation's  most  recent  10-K or 10-Q  filed with the SEC and
          except  for  this  Agreement,  the  Existing  Indenture  and  the  New
          Indenture,  the Corporation and the Subsidiaries are not parties to or
          bound by any  material  contract,  lease,  agreement,  plan,  license,
          arrangement, obligation or commitment (collectively, the "Contracts"):
          (a) which is a  requirement  or output  contract;  (b) relating to any
          indebtedness,  guaranty,  surety  or  indemnification  by or  for  the
          Corporation or any Subsidiary;  (c) prohibiting the Corporation or any
          Subsidiary from freely engaging in any business or competing  anywhere
          in the world; or (d) that is otherwise material to the business of the
          Corporation  or any of its  Subsidiaries.  All  Contracts to which the
          Corporation  or any  Subsidiary  is a party or by  which  any of their
          assets  are bound are  listed in  Schedule  "3.14"  and all  Contracts
          including,  without limitation, the Dindal Association Contract issued
          by Ecopetrol in March1993, the Rio Seco Association Contract issued by
          Ecopetrol in August 1995, the Rosablanca  Association  Contract issued
          by Ecopetrol in February  1998, the Deep Dindal  Association  Contract
          issued  by  Ecopetrol  in  April  2001 and the  Cristales  Association
          Contract   issued  by  Ecopetrol   in  April  2001  (the   "Concession
          Agreements"),  are valid,  binding and in full force and effect. There
          is no material breach, default, or event which, (with notice, lapse of
          time or both)  would  constitute  a material  breach or default by the
          Corporation,  any  Subsidiary  or  any  other  party  to  any  of  the
          Contracts.  Neither the  Corporation nor any of its  Subsidiaries  has
          received   any  notice  of  breach,   cancellation,   termination   or
          non-renewal of any Contract.

     3.15 ERISA.  Except  as set forth in  Schedule  "3.15"  attached  as a part
          hereof,  neither the  Corporation  nor any Subsidiary has  maintained,
          sponsored,  adopted,  made  contributions to, obligated itself to make
          contributions  to, agreed to pay any benefits under, or granted rights
          under or with respect to any employee benefit plan ("Employee  Benefit
          Plan") which  includes,  without  implied  limitation,  any retirement
          plan,  deferred  compensation plan, medical plan, life insurance plan,
          long-term  disability plan, dental plan,  personnel policy (including,
          but not limited to, vacation time, holiday pay, bonus programs, moving
          expense  reimbursement  programs and sick leave), excess benefit plan,
          bonus or incentive plan (including, but not limited to, stock options,
          restricted  stock,  stock  bonus and  deferred  bonus  plans),  salary
          reduction   agreement,    change-of-control   agreement,    employment
          agreement,    consulting   agreement,    workers   compensation   law,
          unemployment  compensation  law,  social  security  law or  any  other
          benefit,  program or contract,  (whether written,  oral,  voluntary or
          pursuant to a collective bargaining agreement),  which could give rise
          to or result in the  Corporation  or any  Subsidiary  having any debt,
          liability, claim or obligation of any kind or nature, whether accrued,
          absolute, contingent, direct, indirect, known or unknown, perfected or
          inchoate or otherwise and whether or not due or to become due. Correct
          and complete copies (or descriptions, if oral) of all Employee Benefit
          Plans have been furnished to the Lender.

     3.16 Arrangements  with  Related  Parties.  Except as set forth on Schedule
          "3.16" attached as a part hereof and in the Corporation's  most recent
          10-K or 10-Q filed with the SEC and except for the Series B Notes, the
          Rights Offering and related documents, there are no direct or indirect
          contracts,   arrangements   or  proposed   transactions   between  the
          Corporation or any Subsidiary and any Affiliate (as hereafter defined)
          of the Corporation or any  Subsidiary.  For purposes of this Agreement
          the term  "Affiliate"  means as to any  person  or  entity,  any other
          person or entity  controlling,  controlled by or under common  control
          with  that  person  or  entity  (whether  such  control  is  direct or
          indirect).  Each executive  officer and director of the Corporation or
          any  Subsidiary  (together  with their  immediate  family  members) is
          automatically  deemed to be an Affiliate of the  Corporation  and each
          Subsidiary.

     3.17 Taxes. All foreign (including,  without limitation,  Canadian,  Cayman
          Islands,  Panama and Colombian),  and United States federal and state,
          income, sales,  employment and other tax returns and reports (the "Tax
          Returns") of the Corporation and each Subsidiary required by law to be
          filed have been timely filed or valid  extensions  have been obtained.
          The Tax Returns which have been filed comply with all applicable laws,
          accurately reflect the results of the Corporation's operations and are
          true and  correct  in all  respects.  All  taxes  (including,  without
          limitation,  all fees,  penalties,  interest  and  other  governmental
          charges,  the "Taxes") which are due and payable have been timely paid
          and  properly  recorded  in the  appropriate  accounting  records in a
          manner consistent with the applicable laws and the Corporation's  past
          practices.  There is no pending or known  threatened audit of or claim
          against the  Corporation or any  Subsidiary  which might result in the
          assessment  or payment of  additional  Taxes in excess of the  amounts
          reflected on the Financial  Statements or Tax Returns. The Corporation
          and the  Subsidiaries  have not  executed any waiver of any statute of
          limitations related to any assessment of Taxes, filed or joined in any
          Tax  Returns  on a  unitary,  combined  or  consolidated  basis,  been
          required  to pay any Taxes  attributable  to any  other  member of any
          group or affiliated  corporations that file  consolidated  returns for
          federal   income  tax  purposes  by  reason  of  Treasury   Regulation
          ss.1.1502-6  or any  comparable  provision  of state or local law that
          provides for joint or several liability, in whole or in part agreed to
          and are not required to make any  adjustments  under ss. 481(a) of the
          Internal  Revenue Code by reason of a change in  accounting  method or
          otherwise  consented to have the  provisions  of ss.  341(f)(2) of the
          Internal Revenue Code apply to any sale of its capital stock or become
          parties to any tax sharing agreements.

     3.18 Insurance.  Schedule  "3.18"  attached  as a part  hereof  is a  true,
          correct and complete list and description  (including  policy numbers)
          of all insurance policies owned by the Corporation and each Subsidiary
          or otherwise pertaining to their business.  The insurance policies are
          in full force and effect, no default has occurred under any policy and
          no  notice  of  cancellation,  intent to  cancel,  notice  of  premium
          increase or any other notice  regarding such notices has been received
          by the  Corporation or any Subsidiary.  The insurance  policies insure
          the Corporation and the Subsidiaries against all risks and liabilities
          normally  insured  against  by  companies  similarly  situated  to the
          Corporation and the Subsidiaries. Schedule "3.18" also contains a list
          of all pending  claims with  respect to any  insurance  policy and any
          instances of a denial,  limitation or  reservation  of coverage by any
          insurance company.

     3.19 Litigation.  Except as set forth on Schedule "3.19" attached as a part
          hereof,   there  have  been  no   actions,   suits,   proceedings   or
          investigations   pending  or  threatened   against  or  affecting  the
          Corporation or any Subsidiary  during the last two (2) years before or
          by any foreign, federal, state, municipal or other governmental court,
          department, commission, board, agency or instrumentality.  None of the
          matters  listed in Schedule  "3.19" could  reasonably  be expected to,
          alone or in the  aggregate,  have a  material  adverse  effect  on the
          business, assets, prospects,  operations,  employee relations, rights,
          business, prospects, results of operations or condition,  financial or
          otherwise,  of the Corporation and the Subsidiaries,  taken as a whole
          (a "Material Adverse  Effect").  The Corporation and the Subsidiaries:
          (a) are not operating under,  subject to or in default with respect to
          any  material  order,  writ,  injunction  or  decree  of any  court or
          foreign,  federal, state, municipal or other governmental  department,
          commission, board, agency or instrumentality, foreign or domestic; (b)
          are not charged or threatened with a violation, or under investigation
          with respect to possible  violation,  of any material provision of any
          foreign,  federal,  state or local  law or  administrative  ruling  or
          regulation relating to any of them or their business, affairs, assets,
          prospects,  operations,  employee relations or condition, financial or
          otherwise;  and (c) have not received any material  complaint from any
          supplier,  customer, client, vendor, well participant,  royalty owner,
          licensor, employee or contractor.

     3.20 Consents.   All   consents,   approvals,    qualifications,    orders,
          authorizations  or filings with  respect to or required in  connection
          with the Corporation's execution,  delivery and performance of the CEC
          Note,  the Warrants,  this Agreement and the Related  Agreements  have
          been obtained and evidence thereof provided to the Lender.

     3.21 Title to Properties; Liens and Encumbrances.  The Corporation and each
          Subsidiary have defensible title to all of their properties and assets
          free and clear of all mortgages, liens and encumbrances,  except liens
          for current taxes not yet due and minor liens and  encumbrances  which
          do not  materially  impair the operations of the  Corporation  and the
          Subsidiaries.  With respect to  properties  and assets they hold under
          the  Concession   Agreements  or  leases,   the  Corporation  and  the
          Subsidiaries  are in compliance  with such  agreements  and leases and
          hold a valid  license or  leasehold  interest  thereunder  free of all
          liens,  claims  or  encumbrances,  and to the  best  knowledge  of the
          Corporation, all other parties to the Concession Agreements and leases
          are in compliance with the material terms thereof.  The  Corporation's
          and the Subsidiaries'  properties and assets are in good condition and
          repair  in all  material  aspects.  The  Corporation  and  each of the
          Subsidiaries  have defensible title to and the right to use all assets
          necessary to conduct  their  businesses  as presently  conducted or as
          proposed  to be  conducted  free and clear of any  liens,  claims  and
          encumbrances.

     3.22 Compliance  with Law and Other  Instruments.  The  Corporation and the
          Subsidiaries: (a) are in full compliance (and not in violation of) any
          applicable articles or certificate of incorporation, bylaws, mortgage,
          indenture, contract, agreement,  instrument,  judgment, decree, order,
          statute,  rule or  regulation,  except to the extent  such  failure to
          comply or violation would not have a Material Adverse Effect; (b) have
          or can  reasonably  be  expected  to obtain all  material  franchises,
          permits, licenses and approvals necessary to conduct their business as
          presently  conducted and as proposed to be conducted;  and (c) have no
          knowledge of any change to any law, statute,  rule or regulation which
          could  adversely  affect  the  Corporation,  any  Subsidiary  or their
          business as presently conducted or as proposed to be conducted.

     3.23 Registration  Rights.  Except pursuant to the Registration  Agreement,
          the RO  Warrants  to be issued in the  Rights  Offering  and the other
          agreements listed in Schedule "3.23" attached hereto as a part hereof,
          there are no  contracts,  agreements  or  understandings  between  the
          Corporation  and any person  granting such person the right to require
          the Corporation to file a registration  statement under the Securities
          Act with respect to any  securities of the  Corporation  or to require
          the  Corporation to include such securities with the Warrant Shares to
          be registered pursuant to the Registration Agreement.

     3.24 Federal  Reserve  Regulations.  Neither the Corporation nor any of the
          Subsidiaries nor any agent thereof acting on the behalf of any of them
          has taken,  and none of them will take,  any action  that might  cause
          this Agreement or the issuance or sale of the CEC Note and Warrants to
          violate  Regulation  G (12 C.F.R.  Part 207),  Regulation T (12 C.F.R.
          Part 220),  Regulation  U (12  C.F.R.  Part 221) or  Regulation  X (12
          C.F.R.  Part 224) of the Board of  Governors  of the  Federal  Reserve
          System.

     3.25 Reserve  Information.  The  information  which  was  supplied  by  the
          Corporation to Ryder Scott Company Petroleum Consultants (the "Reserve
          Engineer"),  being independent  petroleum  engineers,  for purposes of
          evaluating  the  oil  and  gas  reserves  of the  Corporation  and the
          Subsidiaries as of December 31, 2000,  including,  without limitation,
          production,  costs of operation and  development,  current  prices for
          production,  agreements  relating to current and future operations and
          sales of production,  was true and correct in all material respects on
          the dates such estimates were made and such  information  was supplied
          and was prepared in accordance with customary industry  practices,  as
          indicated  in the letter of the Reserve  Engineer  dated  February 21,
          2001 (the "Reserve Letter").  The Reserve Engineer was, as of the date
          of the Reserve Letter and is, as of the date hereof,  independent with
          respect to the  Corporation  and the  Subsidiaries.  Other than normal
          production of the reserves and product price  fluctuations  and except
          as set forth in Schedule "3.25" attached hereto as a part hereof,  the
          Corporation  is not aware of any  facts or  circumstances  that  would
          result in a material  adverse  change in the reserves,  or the present
          value of future net cash flows therefrom,  as reflected in the Reserve
          Letter and the reserve reports referenced  therein.  Estimates of such
          reserves and present values as described in the Reserve Letter and the
          reserve reports  referenced therein comply in all material respects to
          the  applicable  requirements  of Regulation  S-X and Industry Guide 2
          under the Securities Act.

     3.26 Securities Classes. When the CEC Note is issued and delivered pursuant
          to this Agreement,  the CEC Note will not be of the same class (within
          the meaning of Rule 144A under the Securities  Act) as any security of
          the  Corporation  or the  Subsidiaries  that is listed  on a  national
          securities  exchange registered under Section 6 of the Exchange Act or
          that is quoted in a United  States  automated  inter-dealer  quotation
          system.

     3.27 Solicitation.  No form of general  solicitation or general advertising
          (as defined in Regulation D under the Securities  Act) was used by the
          Corporation,   the   Subsidiaries   or   any   of   their   respective
          representatives  in connection with the offer and sale of the CEC Note
          or the Warrants including,  without limitation,  articles,  notices or
          other communications  published in any newspaper,  magazine or similar
          medium or  broadcast  over  television  or radio,  or any  seminar  or
          meeting whose attendees have been invited by any general  solicitation
          or general  advertising.  No  securities  of the same class as the CEC
          Note have been issued and sold by the  Corporation  within the six (6)
          month period immediately prior to the date hereof.

     3.28 Registration  Requirements.  Assuming  the  accuracy  of the  Lender's
          representations  and  agreements  set  forth  in  this  Agreement,  no
          registration  under the Securities Act of the CEC Note or the Warrants
          is  required  for the  sale of the CEC Note  and the  Warrants  to the
          Lender as contemplated by this Agreement.

     3.29 Certificates.   Each   certificate   signed  by  any  officer  of  the
          Corporation  or any  Subsidiary  and delivered to any of the Lender or
          counsel  for the  Lender  will be  deemed to be a  representation  and
          warranty by the Corporation  and the  Subsidiaries to the Lender as to
          the matters covered thereby.

     3.30 Full  Disclosure.  This  Agreement,  the  Related  Agreements  and any
          schedule  referenced  in or attached to this  Agreement  or any of the
          Related  Agreements,  any document  furnished to the Lender under this
          Agreement  and any  certification  furnished  to the Lender under this
          Agreement or any of the Related  Agreements  do not contain any untrue
          statement of a material  fact and do not omit to state a material fact
          necessary to make the  statements  made,  in the  circumstances  under
          which  they were made,  not  misleading.  All of the  representations,
          warranties  and  covenants  in  this  Agreement  and  in  the  Related
          Agreements are true and correct as of the date made,  will be true and
          correct  as of the  Closing  and  will  survive  and  not  be  waived,
          discharged,  released, modified, terminated or affected by the Closing
          or any due diligence by the Lender.

     3.31 Acknowledgment.  The Corporation acknowledges that the Lender and, for
          purposes of the  opinions to be  delivered  to the Lender  pursuant to
          this Agreement,  counsel to the Corporation and the  Subsidiaries  and
          counsel to the  Lender  will rely upon the  accuracy  and truth of the
          foregoing  representations and the Corporation hereby consents to such
          reliance.

4. Lender's  Representations and Warranties.  The Lender represents and warrants
to the Corporation as follows:

     4.1  Authorization;  Power.  The Lender has all  requisite  legal power and
          authority  to  execute,  deliver and perform  this  Agreement  and the
          Related  Agreements  to which it is a party.  The Lender has taken all
          necessary  action  for  the  authorization,  execution,  delivery  and
          performance  of this  Agreement  and the  Related  Agreements  and the
          consummation of the transactions  contemplated thereby. This Agreement
          and the Related Agreements are legal, valid and binding obligations of
          the Lender,  which are  enforceable  against the Lender in  accordance
          with their terms.

     4.2  Investment Representations.  The Lender understands that the CEC Note,
          the  Warrants  and the  Warrant  Shares are not  registered  under the
          Securities  Act.  The Lender  also  understands  that the CEC Note and
          Warrants  are being  offered and sold  pursuant to an  exemption  from
          registration  contained in the  Securities  Act based in part upon the
          Lender's  representations  contained  in this  Agreement.  The  Lender
          hereby represents and warrants as follows:

          4.2.1     Economic  Risk.  The Lender has  substantial  experience  in
                    evaluating and investing in private  placement  transactions
                    of securities in companies similar to the Corporation so the
                    Lender is capable of  evaluating  the merits and risks of an
                    investment in the Corporation.  The Lender understands that:
                    (a) the investment contemplated by this Agreement involves a
                    substantial  degree of risk;  (b) the  Lender  must bear the
                    economic risk of this investment indefinitely unless the CEC
                    Note,  the  Warrants  or the Warrant  Shares are  registered
                    pursuant  to  the  Securities  Act,  or  an  exemption  from
                    registration  is available;  and (c) the  Corporation has no
                    present  intention of registering the CEC Note, the Warrants
                    or the  Warrant  Shares.  The Lender also  understands  that
                    there is no assurance that any exemption  from  registration
                    under the Securities Act will be available and that, even if
                    available,  such  exemption  may not  allow  the  Lender  to
                    transfer all or any portion of the CEC Note, the Warrants or
                    the Warrant Shares.

          4.2.2     Acquisition for Own Account. The Lender is acquiring the CEC
                    Note,  the Warrants and the Warrant  Shares for the Lender's
                    own  account  for  investment  purposes  only,  and does not
                    intend to  distribute  the CEC  Note,  the  Warrants  or the
                    Warrant Shares.

          4.2.3     Protection. The Lender represents that the Lender: (a) is an
                    accredited  investor  within  the  meaning of  Regulation  D
                    promulgated  under the Securities  Act; (b) has the capacity
                    to  protect  its  own  interests  in  connection   with  the
                    transactions  contemplated in this Agreement and the Related
                    Agreements;  and  (c)  is  aware  of no  publication  of any
                    advertisement    in   connection   with   the   transactions
                    contemplated in this Agreement.

          4.2.4     Corporation  Information.  The Lender has:  (a) received and
                    read all information that the Lender has requested regarding
                    the   Corporation's   business,   management  and  financial
                    affairs;  (b) had the  opportunity  to discuss  such matters
                    with directors,  officers and management of the Corporation;
                    (c)  had  the   opportunity  to  review  the   Corporation's
                    operations and  facilities;  and (d) had the  opportunity to
                    ask  questions of and receive  answers from the  Corporation
                    and its  management  regarding  the terms and  conditions of
                    this investment.

          4.2.5     Residence.  The office or offices of the Lender in which its
                    investment  decision  was made is located at the  address or
                    addresses  of the  Lender  set forth on the  signature  page
                    hereto.  The  Lender  represents  that no offer to  purchase
                    securities  of  the   Corporation   was  made  outside  such
                    jurisdiction.

5. Lender's  Conditions.  The  obligation of the Lender to purchase the CEC Note
and the  Warrants at the Closing is subject to the  fulfillment  to the Lender's
satisfaction of each of the following conditions:

     5.1  Representations  and  Warranties  Correct.   The  representations  and
          warranties  made by the  Corporation  in paragraph 3 of this Agreement
          will be true and correct when made and will be true and correct in all
          material respects as of the Closing, with the same force and effect as
          if made on and as of the date of Closing.

     5.2  Performance.  All covenants,  agreements  and conditions  contained in
          this  Agreement  and the Related  Agreements  to be  performed  by the
          Corporation or the  Subsidiaries  at or prior to the Closing will have
          been performed and each of the Related Agreements will be satisfactory
          to the  Lender  and the  Lender's  counsel  in form and  content.  The
          foregoing  includes the execution and delivery of this Agreement,  the
          CEC Note,  the  Warrants,  the Related  Agreements  and the  documents
          required  thereby  and any other  instrument,  agreement  or  document
          reasonably  requested  by the Lender  including,  without  limitation,
          security  documents in form and substance  satisfactory  to the Lender
          and its counsel which may include (a) a requirement that the shares of
          the  Subsidiaries be registered in the name of the Lender or a nominee
          or agent for the Lender and the  trustee for the holders of the Series
          B Notes and the  Series A Notes to be issued in the  Rights  Offering,
          and (b) the  issuance of other  instruments  to protect  the  Lender's
          interests.

     5.3  Compliance  Certificate.  The  Corporation  will have delivered to the
          Lender a  certificate  of the  Corporation,  executed by its President
          dated the date of Closing truthfully  certifying to the fulfillment of
          the conditions  specified in this paragraph 5, that there has not been
          a material  adverse change in the  Corporation,  any Subsidiary or the
          assets  and  businesses  of  the  foregoing  since  the  date  of  the
          Corporation's  Annual Report on Form 10-K for the year ended  December
          31, 2000 such other matters as the Lender may reasonably request.

     5.4  Omnibus Certificate. The Corporation will have delivered to the Lender
          copies of each of the following in form and substance  satisfactory to
          the Lender and certified by the Secretary of the  Corporation to be in
          full force and effect on the date of the Closing:  (a) the certificate
          of incorporation  (or other formation  documents as applicable) of the
          Corporation  and each  Subsidiary  certified  by the  jurisdiction  of
          formation  as of a date  not  earlier  than  May 21,  2001;  (b)  good
          standing  certificates  with  respect  to  the  Corporation  and  each
          Subsidiary certified by the jurisdiction of formation as of a date not
          more than twenty-one (21) days prior to the Closing; (c) good standing
          certificates  with  respect  to the  Corporation  and each  Subsidiary
          certified  by  the   jurisdictions  in  which  the  conduct  of  their
          businesses  require them to be in good standing,  in each case as of a
          date not more than twenty-one (21) days prior to the Closing;  (d) the
          bylaws  (or  equivalent   documents)  of  the   Corporation  and  each
          Subsidiary;  and (e)  resolutions  of the  Board  and each  Subsidiary
          authorizing  the (i) the execution,  delivery and  performance of this
          Agreement, the CEC Note, the Warrants and the Related Agreements,  and
          (ii) the transactions  contemplated thereby including the issuance and
          sale of the CEC  Note,  the  Warrants  and the  Warrant  Shares to the
          Lender.

     5.5  Adverse  Events.  As of the Closing there will not have occurred since
          the date of the Corporation's  Annual Report on Form 10-K for the year
          ended December 31, 2000: (a) any downgrading, suspension or withdrawal
          of, nor shall any notice have been given of any  potential or intended
          downgrading,  suspension or withdrawal of, or of any review (or of any
          potential  or  intended  review)  for a possible  change that does not
          indicate the  direction  of the possible  change in, any rating of the
          Corporation or any securities of the Corporation  (including,  without
          limitation,  the  placing  of any of the  foregoing  ratings on credit
          watch with negative or developing implications or under review with an
          uncertain direction) by any "nationally  recognized statistical rating
          organization,"  as such term is defined for purposes of Rule 436(g)(2)
          under the Securities Act; or (b) any change, nor shall any notice have
          been given of any potential or intended change, in the outlook for any
          rating of the  Corporation or any securities of the Corporation by any
          such rating organization.

     5.6  Legal Opinion.  The Corporation  will have delivered to the Lender the
          opinion of McAfee & Taft A  Professional  Corporation,  counsel to the
          Corporation,  and Cayman  Islands,  Panamanian  and Colombian  counsel
          dated the date of Closing, addressed to the Lender covering all of the
          following matters in form and content  reasonably  satisfactory to the
          Lender and its counsel:

          5.6.1     The Corporation is duly formed, validly existing and in good
                    standing  under the laws of the Cayman  Islands  and each of
                    the  Subsidiaries  is duly formed,  validly  existing and in
                    good  standing  under  the laws of the  jurisdiction  of its
                    formation. The Corporation and each of the Subsidiaries have
                    all requisite  corporate,  partnership or limited  liability
                    company  power and  authority  to own or lease  and  operate
                    their respective  properties and to conduct their respective
                    businesses.

          5.6.2     The Corporation has the authorized  capitalization set forth
                    in this Agreement.  All of the outstanding shares of capital
                    stock of the Corporation and each of the  Subsidiaries  have
                    been duly authorized and validly issued,  are fully paid and
                    non-assessable  and  were  not  issued  in  violation  of or
                    subject to any preemptive  rights.  To the knowledge of such
                    counsel,  there are no: (a)  outstanding  securities  of the
                    Corporation or any of the  Subsidiaries  convertible into or
                    evidencing the right to purchase or subscribe for any shares
                    of  capital  stock  of  the   Corporation   or  any  of  the
                    Subsidiaries;   (b)   outstanding  or  authorized   options,
                    warrants,  subscriptions,  rights,  commitments or any other
                    agreements of any character  obligating  the  Corporation to
                    issue any  shares  of its  capital  stock or any  securities
                    convertible  into or  evidencing  the right to  purchase  or
                    subscribe  for any shares of such stock;  or (c)  agreements
                    with  respect to the voting,  sale or transfer of any shares
                    of capital stock of the Corporation to which the Corporation
                    is a party,  except  as  disclosed  in this  Agreement,  the
                    Corporation's  Annual Report on Form 10-K for the year ended
                    December 31, 2000, or the Corporation's  Quarterly Report on
                    Form 10-Q for the quarter ending March 31, 2001.

          5.6.3     The CEC Note has been duly and validly authorized,  and when
                    executed,  issued and delivered, will constitute a valid and
                    binding obligation of the Corporation,  enforceable  against
                    the Corporation in accordance with its terms, except insofar
                    as  such  enforcement  may  be  subject  to  (a)  applicable
                    bankruptcy,      insolvency,      fraudulent     conveyance,
                    reorganization, moratorium and similar laws now or hereafter
                    in  effect  relating  to  creditors'   rights  and  remedies
                    generally  and (b)  general  principles  of equity  (whether
                    enforcement is sought in a proceeding at law or in equity).

          5.6.4     This Agreement, the Warrants and the Related Agreements have
                    been duly and validly authorized,  executed and delivered by
                    the Corporation and this Agreement has been duly and validly
                    authorized, executed and delivered by the Subsidiaries. This
                    Agreement   is  a  valid  and  binding   agreement   of  the
                    Corporation and the Subsidiaries enforceable against each of
                    them in accordance  with the terms  hereof,  and each of the
                    Warrants and the Related  Agreements  is a valid and binding
                    agreement  of  the  Corporation   enforceable   against  the
                    Corporation  in accordance  with the terms  thereof,  except
                    insofar  as  (a)  such  enforcement  may be  subject  to (i)
                    applicable  bankruptcy,  insolvency,  fraudulent conveyance,
                    reorganization, moratorium and similar laws now or hereafter
                    in  effect  relating  to  creditors'   rights  and  remedies
                    generally  and (ii) general  principles  of equity  (whether
                    enforcement  is sought in a proceeding  at law or in equity)
                    and (b) rights to indemnification and contribution contained
                    therein may be limited by federal or state  securities  laws
                    or public policy relating thereto.

          5.6.5     The execution,  delivery and  performance by the Corporation
                    of  this  Agreement,  the CEC  Note,  the  Warrants  and the
                    Related   Agreements   and  the   execution,   delivery  and
                    performance  by the  Subsidiaries  of this Agreement and the
                    consummation  of the  transactions  contemplated  hereby and
                    thereby,  including the  issuance,  sale and delivery of the
                    CEC Note and the Warrants  will not: (a) to the knowledge of
                    such counsel,  conflict with or result in a breach of any of
                    the terms and  provisions of, or constitute a default (or an
                    event  which with  notice or lapse of time,  or both,  would
                    constitute a default) or require consent under, or result in
                    the  creation  or   imposition   of  any  lien,   charge  or
                    encumbrance  upon any property or assets of the  Corporation
                    or any of the  Subsidiaries  pursuant  to the  terms  of any
                    agreement, instrument, franchise, license or permit to which
                    the Corporation or any of the  Subsidiaries is a party or by
                    which any of their  respective  properties  or assets may be
                    bound and that is listed on the Corporation's  Annual Report
                    on Form 10-K for the year ended  December  31,  2000  (other
                    than those as to which the  requisite  waivers  or  consents
                    have been  obtained);  or (b) violate or  conflict  with any
                    provision  of the  certificate  of  incorporation  or  other
                    formation  documents,  as  applicable,  or  the  by-laws  or
                    equivalent  documents or other  organizational  documents of
                    the  Corporation  or  any  of the  Subsidiaries  or,  to the
                    knowledge of such  counsel,  any  judgment,  decree,  order,
                    statute,  rule or  regulation  of any  court or any  public,
                    governmental   or   regulatory   agency   or   body   having
                    jurisdiction  over the Corporation,  any of the Subsidiaries
                    or any of their respective properties or assets. No consent,
                    approval,   authorization,   order,  registration,   filing,
                    qualification, license or permit of or with any court or any
                    public,  governmental  or  regulatory  agency or body having
                    jurisdiction over the Corporation or any of the Subsidiaries
                    or any of their respective  properties or assets is required
                    for  the  execution,   delivery  and   performance  of  this
                    Agreement,  the  CEC  Note,  the  Warrants  or  the  Related
                    Agreements,   and  the   consummation  of  the  transactions
                    contemplated  hereby  and  thereby,   except  for  (i)  such
                    consents, approvals, authorizations,  orders, registrations,
                    filings,  qualifications,  licenses  and  permits  as may be
                    required  under  the  state  securities  or Blue Sky laws in
                    connection  with the Rights Offering and the purchase of the
                    CEC  Note  by  the  Lender  and  the   performance   of  the
                    Corporation's  obligations under the Registration  Agreement
                    and (ii) such  other  consents,  approvals,  authorizations,
                    orders, registrations, filings, qualifications, licenses and
                    permits as have been obtained and delivered to the Lender.

          5.6.6     The Corporation is not an "investment  company" or a company
                    "controlled"  by an "investment  company" within the meaning
                    of the Investment Company Act of 1940, as amended.

          5.6.7     Assuming  (a)  the  accuracy  of  the   representations  and
                    warranties of the Corporation and the Subsidiaries contained
                    in  paragraphs  3.26 and 3.29  and (b) the  accuracy  of the
                    Lender's   representations   and  warranties   contained  in
                    paragraph  4, the  issuance and sale of the CEC Note and the
                    Warrants  to the Lender in the manner  contemplated  by this
                    Agreement  should be held to be exempt from the registration
                    requirements of the Securities Act.

          5.6.8     The Subsidiaries  have full corporate power and authority to
                    execute  and  deliver   this   Agreement   and  the  Related
                    Agreements to which any of the Subsidiaries is a party. This
                    Agreement  and the  Related  Agreements  to which any of the
                    Subsidiaries is a party have been duly authorized, executed,
                    issued and  delivered  by the  Subsidiaries  and  constitute
                    valid and legally binding  obligations of the  Subsidiaries,
                    enforceable  against the  Subsidiaries  in  accordance  with
                    their respective  terms,  except insofar as such enforcement
                    may be subject  to (a)  applicable  bankruptcy,  insolvency,
                    fraudulent   conveyance,   reorganization,   moratorium  and
                    similar  laws  now  or  hereafter  in  effect   relating  to
                    creditors'  rights  generally and (b) general  principles of
                    equity (whether enforcement is sought in a proceeding at law
                    or in equity).

          5.6.9     The CEC Note,  when  issued,  will not be of the same  class
                    (within the meaning of Rule 144A under the  Securities  Act)
                    as any other  securities of the Corporation  that are listed
                    on a national securities exchange registered under Section 6
                    of  the  Exchange  Act,  or  quoted  in  a  U.S.   automated
                    interdealer   quotation  system  of  a  registered  national
                    securities association.

          5.6.10    Neither the  Corporation  nor any of the  Subsidiaries is in
                    violation of their respective charter or by-laws.

          5.6.11    To  such  counsel's   knowledge,   except  pursuant  to  the
                    Registration  Agreement  and in  connection  with the Rights
                    Offering,   there   are   no   contracts,    agreements   or
                    understandings   between  the  Corporation  or  any  of  the
                    Subsidiaries  and any person  granting such person the right
                    to  require  the  Corporation  of any  Subsidiary  to file a
                    registration statement under the Securities Act with respect
                    to any  securities  of the  Corporation  or to  require  the
                    Corporation  or any  Subsidiary  to include such  securities
                    with the  Warrant  Shares to be  registered  pursuant to the
                    Registration Agreement.

          5.6.12    To such counsel's knowledge, neither the Corporation nor any
                    of the  Subsidiaries is in default in the performance of any
                    obligation,  agreement,  covenant or condition  contained in
                    any  indenture,  loan  agreement,  mortgage,  lease or other
                    agreement or instrument  that is material to the Corporation
                    or the  Subsidiaries  and which was included or incorporated
                    by reference in the Corporation's Annual Report on Form 10-K
                    for the year ended December 31, 2000,  taken as a whole,  to
                    which the Corporation or any of the  Subsidiaries is a party
                    or by which the  Corporation or any of the  Subsidiaries  or
                    their respective property or assets is bound.

          5.6.13    The Pledge Agreement and the collateral  documents  executed
                    in connection with the Pledge  Agreement create and properly
                    perfect  in  favor  of the  Lender  for the  benefit  of the
                    Lender,  the trustee under the New Indenture and the holders
                    of the  Series  A  Notes  and  the  Series  B  Notes a first
                    priority  lien and  security  interest  in and to all of the
                    capital stock and equity of each of the Subsidiaries and all
                    dividends,  distributions,  rights and claims  with  respect
                    thereto, all accounts receivable, promissory notes and other
                    instruments  owing by any  Subsidiary to the  Corporation or
                    any other Subsidiary and all proceeds and products therefrom
                    and such liens and security interests have been properly and
                    adequately   perfected  in  all  jurisdictions   where  such
                    perfection  is reasonably  necessary in accordance  with the
                    applicable laws of each such  jurisdiction.  The exercise of
                    remedies  under  the  Pledge  Agreement  after  an  event of
                    Default including,  without limitation,  a change in control
                    of the  Subsidiaries,  will not  cause or create a breach or
                    default under any of the Concession  Agreements or give rise
                    to any  termination  right by  Ecopetrol  thereunder  or the
                    right by Ecopetrol to exercise any other  remedies under any
                    of the Concession Agreements.

          5.6.14    The submission by the  Corporation  and the  Subsidiaries to
                    the  jurisdiction of the state and federal courts sitting in
                    the State of Oklahoma and the other  provisions of paragraph
                    13 of this Agreement are valid,  binding and  enforceable in
                    accordance with the terms thereof.

          5.6.15    Except as disclosed in the  Corporation's  Annual  Report on
                    Form 10-K for the year ended December 31, 2000, such counsel
                    does  not  know of any  legal  or  governmental  proceedings
                    pending or threatened to which the Corporation or any of the
                    Subsidiaries is or could be a party or to which any of their
                    respective  property  is or could be  subject,  which  might
                    result,  singly or in the aggregate,  in a Material  Adverse
                    Effect.

          5.6.16    Neither  the  Corporation  nor any of the  Subsidiaries  has
                    violated any Environmental Law or any provisions of ERISA or
                    the  rules and  regulations  promulgated  thereunder  or the
                    environmental    or   employment   laws   of   any   foreign
                    jurisdiction, except for such violations which, singly or in
                    the aggregate, would not have a Material Adverse Effect.

          5.6.17    Each  of the  Corporation  and  the  Subsidiaries  has  such
                    permits,   licenses,   consents,   exemptions,   franchises,
                    authorizations and other approvals (each an "Authorization")
                    of,  and has  made all  filings  with and  notices  to,  all
                    governmental or regulatory  authorities and  self-regulatory
                    organizations and all courts and other tribunals  including,
                    without limitation, under any applicable Environmental Laws,
                    as are  necessary to own,  lease,  license and operate their
                    respective   properties  and  to  conduct  their  respective
                    businesses,  except  where  the  failure  to have  any  such
                    Authorization  or to make any such  filing or  notice  would
                    not,  singly or in the  aggregate,  have a Material  Adverse
                    Effect.  Each such  Authorization is valid and in full force
                    and effect and each of the Corporation and the  Subsidiaries
                    is in compliance  with all the terms and conditions  thereof
                    and with the rules and  regulations of the  authorities  and
                    governing bodies having  jurisdiction  with respect thereto;
                    and no event has  occurred  (including  the  receipt  of any
                    notice from any  authority or  governing  body) which allows
                    or,  after  notice  or lapse of time or both,  would  allow,
                    revocation,   suspension   or   termination   of  any   such
                    Authorization  or results or,  after notice or lapse of time
                    or both,  would result in any other impairment of the rights
                    of  the   holder  of  any  such   Authorization;   and  such
                    Authorizations  contain no restrictions  that are burdensome
                    to the Corporation or any of the Subsidiaries.

     5.7  Comfort  Letter.  The  Lender  shall have  received,  at the time this
          Agreement  is  executed  and at the  Closing,  letters  dated the date
          hereof  and  the  Closing  Date,  in  form  and  substance  reasonably
          satisfactory  to the Lender  from  Arthur  Andersen  LLP,  independent
          public  accountants,  containing the information and statements of the
          type  ordinarily  included in  accountants'  "comfort  letters" to the
          Lender with respect to the financial statements of the Corporation.

     5.8  Legal Investment.  As of the Closing, the purchase of the CEC Note and
          Warrants by the Lender hereunder will be legally permitted by all laws
          and regulations to which the Lender and the Corporation are subject.

     5.9  Qualifications.  As of  the  Closing,  all  authorizations,  approval,
          consents,  permits and waivers which are necessary or appropriate  for
          purposes of this Agreement, the CEC Note, the Warrants and the Related
          Agreements,  as  determined  in the sole  discretion of counsel to the
          Lender, will have been obtained.

     5.10 Due Diligence.  The Lender and its advisers,  including legal counsel,
          will have completed a due diligence  review of the  Corporation,  each
          Subsidiary and their businesses  including,  without  limitation,  the
          Concession Agreements,  with results satisfactory to the Lender in the
          Lender's  sole  discretion.  There  will not have  occurred a material
          adverse change in the Corporation,  any Subsidiary or in the business,
          assets or prospects of the foregoing since December 31, 2000.

     5.11 Expenses. At the Closing, the Corporation will have paid or reimbursed
          the Lender for the  Lender's  reasonable  expenses  and  out-of-pocket
          costs  incurred in connection  with the  negotiation of this Agreement
          and  the  Related   Agreements,   documentation  of  the  transactions
          contemplated hereunder and thereunder and closing costs.

     5.12 Purchase  of Series B Notes.  All of the Series B Notes will have been
          purchased and paid for in immediately available funds in the principal
          amount of not less  than  Twenty-Two  Million  Five  Hundred  Thousand
          Dollars  ($22,500,000.00) on terms substantially  similar to the terms
          of the CEC Note.

     5.13 Proceedings and Documents.  As of the Closing, all corporate and other
          proceedings in connection with the  transactions  contemplated  hereby
          and by the  Related  Agreements,  and all  documents  and  instruments
          incident  to  such  transactions,   will  be  in  form  and  substance
          reasonably satisfactory to the Lender.

     5.14 Collateral  Perfection  and Put  Option.  The Lender and the  Lender's
          counsel will be satisfied:  (a) as to the validity and  enforceability
          of the liens,  security interests and other encumbrances  covering all
          of the assets of the Corporation including, without limitation, all of
          the capital stock of each of the Subsidiaries, all funds to be held in
          escrow pursuant to the terms of this Agreement, all accounts,  general
          intangibles  and other tangible and intangible  property and assets of
          the Corporation; and (b) as to the form, content and enforceability of
          the Lender's  right within  fifteen (15) days after the  completion of
          the Rights Offering to put to Robert A. Hefner III ("Hefner") up to an
          amount of the principal  balance of the CEC Note and a pro-rata  share
          of the Warrants  sufficient to cause Hefner's aggregate  investment in
          the CEC  Notes  and the  Series  A Notes to be at  least  Ten  Million
          Dollars  ($10,000,000.00)  in  substantially  the form at Exhibit  "G"
          attached as a part hereof.

     5.15 Amendments  of  Articles.  The  articles  of  incorporation  and other
          formation and governance  documents for each of the Subsidiaries  will
          have been amended in form and substance reasonably satisfactory to the
          Lender and its counsel.

6. Corporation's Conditions.  The Corporation's obligation to issue and sell the
CEC Note and the  Warrants  is subject to the  satisfaction,  on or prior to the
Closing, as applicable, of the following conditions:

     6.1  Representations   and  Warranties   True.  The   representations   and
          warranties made by the Lender in paragraph 4 of this Agreement will be
          true and correct in all material  respects  when made and will be true
          and correct in all material respects as of the Closing,  with the same
          force and effect as if made on and as of said date.

     6.2  Performance  of  Obligations.  The  Lender  will  have  performed  and
          complied with all  agreements  and  conditions  herein  required to be
          performed or complied with by the Lender on or before the Closing.

     6.3  Payment. The Lender will have paid the purchase price for the CEC Note
          and the Warrants and all of the  purchasers of the Series B Notes will
          have  paid  the  full  purchase  price  for  the  Series  B  Notes  in
          immediately available funds.

     6.4  Consents,  Permits and Waivers. The Corporation will have obtained any
          and all consents,  permits and waivers  necessary or  appropriate  for
          consummation  of the  transactions  contemplated by this Agreement and
          the Related Agreements.

     6.5  Fairness  Opinion.  The  Corporation  will have received an opinion of
          CIBC World Markets Corp.  that the  transactions  contemplated by this
          Agreement,  the sale of the Series B Notes and the Rights Offering are
          fair from a financial point of view to the Corporation.

     6.6  Certain  Collateral  Agreements.  The Deed of Mortgage Over Shares (or
          Charge  Over  Shares  to the  extent  agreed to by the  parties),  the
          Registration  Agreement,  the  Pledge  Agreement  and  the  Collateral
          Sharing Agreement will be in form and content reasonably  satisfactory
          to the Corporation and its counsel.

7. Affirmative Covenants.  The Corporation and the Subsidiaries hereby severally
covenant and agree with the Lender to perform or cause to be  performed  each of
the following  obligations  set forth in this paragraph 7 during the period (the
"Covenant  Period")  commencing on the Closing and continuing as long as the CEC
Note is outstanding:

     7.1  Financial Statements and Information.  The Corporation will deliver to
          the Lender the following:

          7.1.1     SEC  Filings.  As promptly as  practicable  after the filing
                    thereof with the SEC, the Corporation will deliver copies of
                    all  annual,  quarterly  and  interim  reports and all other
                    filings made by the  Corporation or any of the  Subsidiaries
                    with the SEC  together  with all  exhibits  and  attachments
                    thereto.

          7.1.2     Compliance  Certificate.  Within ten (10) days after the end
                    of each fiscal  quarter  commencing  with the quarter ending
                    September  30,  2001,  a  certificate  executed by the Chief
                    Executive  Officer  and the Chief  Financial  Officer of the
                    Corporation  stating  that:  (a)  the  Corporation  and  the
                    Subsidiaries  are in  compliance  in all respects  with this
                    Agreement,   the  Related  Agreements,   the  Memorandum  of
                    Association or Articles of Association or other formation or
                    governing    documents   for   the   Corporation   and   the
                    Subsidiaries;   (b)  except  as  fully   disclosed  in  such
                    certificate,   there  has  not   occurred   a  Default   (as
                    hereinafter  defined) by the  Corporation  or any Subsidiary
                    under this  Agreement  or the  Related  Agreements;  (c) the
                    Corporation and the  Subsidiaries are in compliance with all
                    material  agreements  including,   without  limitation,  the
                    Concession  Agreements  and any  instruments  evidencing any
                    indebtedness of the  Corporation or any Subsidiary;  and (d)
                    there has not  occurred  a  material  adverse  change in the
                    Corporation, any Subsidiary or their businesses.

          7.1.3     Budget.   Not  less  than  sixty  (60)  days  prior  to  the
                    commencement  of each  fiscal year an annual  business  plan
                    (the  "Budget"),  updates  thereto not less  frequently than
                    quarterly  on the last day of each  fiscal  quarter  and any
                    material  revisions  thereto within ten (10) days after such
                    revisions  become  effective.  The  Budget  will  include  a
                    written  narrative  together  with  financial   projections,
                    balance  sheets,  statements  of  operations  and changes in
                    financial position for the Corporation and the Subsidiaries,
                    all prepared on a detailed  monthly basis in form reasonably
                    acceptable to Lender.

          7.1.4     Auditors Reports.  Promptly upon receipt thereof,  copies of
                    all other reports,  if any,  submitted to the Corporation by
                    independent public accountants in connection with any annual
                    or interim  audit or review of the books of the  Corporation
                    and its Subsidiaries including,  without implied limitation,
                    any management  letters,  internal  control  evaluations and
                    alerts.

          7.1.5     Third  Party   Information.   Within  ten  (10)  days  after
                    issuance, a copy of each financial statement, report, notice
                    or communication (the "TP Information") that the Corporation
                    or any  Subsidiary  delivers  to or receives  from:  (a) the
                    Board,  any  committee of the Board,  any lender or trustee;
                    (b) any  securities  exchange,  the National  Association of
                    Securities  Dealers,  any credit  rating agency or any other
                    industry  association;  or (c)  any  governmental  official,
                    authority or agency, but only if the TP Information  relates
                    to a matter or matters that might  reasonably be expected to
                    have a Material Adverse Effect.

          7.1.6     Litigation.   Promptly  upon  the   Corporation's   learning
                    thereof,  notice of any litigation,  suit or  administrative
                    proceeding  that  could  reasonably  be  expected  to have a
                    Material Adverse Effect on the Corporation or any Subsidiary
                    or their business,  affairs, assets, prospects,  operations,
                    employee  relations or condition  (financial  or  otherwise)
                    whether or not the claim is covered by insurance.

          7.1.7     Material Adverse Developments.  Promptly upon the occurrence
                    thereof  (but in no event  later  than  five (5) days  after
                    discovery  thereof) notice of: (a) any default or breach of,
                    or default under this Agreement,  the Related  Agreements or
                    any other  material  agreement or  arrangement  to which the
                    Corporation  or any of its  Subsidiaries  is a  party  or by
                    which any of them is bound  including,  without  limitation,
                    the  Concession  Agreements,   the  Indenture  covering  the
                    Borrower's  $110,000,000  12.5%  Senior  Notes due 2005 (the
                    "Existing  Indenture") and the Indenture covering the Series
                    A Notes due 2004 (the "New Indenture");  (b) any event which
                    has or could  reasonably  be  expected  to have,  a Material
                    Adverse Effect on the business,  affairs, assets, prospects,
                    operations,  employee relations or condition,  (financial or
                    otherwise) of the  Corporation or any Subsidiary  including,
                    but  not  limited  to,  the  institution  or  threat  of any
                    material  litigation  or  investigation  with respect to the
                    Corporation or any Subsidiary or any material  disputes with
                    co-interest owners or customers;  (c) any event which has or
                    could  reasonably  be  expected  to result  in any  material
                    adverse change in any law, regulation, rule or policy of the
                    Colombian   government   with  respect  to  oil  and/or  gas
                    operations  in Colombia  or the  currency or tax regime with
                    respect  thereto;  and  (d) any  event  which  has or  could
                    reasonably  be  expected  to  create  any  lien,   claim  or
                    encumbrance  on any of the assets of the  Corporation or any
                    of the Subsidiaries or creates any obligation on the part of
                    the Corporation or any of the Subsidiaries to grant any lien
                    or encumbrance or to guarantee any  indebtedness  other than
                    indebtedness under clause 8.13(e) of this Agreement or liens
                    granted pursuant to this Agreement.

          7.1.8     Other Information.  With reasonable  promptness,  such other
                    data and  information as from time to time may be reasonably
                    requested  by the  Lender the  disclosure  of which will not
                    violate  any  law,  rule,  regulation  or  agreement  of the
                    Corporation.

     7.2  Accounting.   The  Corporation  will  maintain  and  will  cause  each
          Subsidiary to maintain a system of accounting, book records and system
          of internal  control to be established and  administered in accordance
          with GAAP consistently  applied.  The Corporation and the Subsidiaries
          will cause  complete  entries to be made in such books and records and
          establish  appropriate  procedures  and policies so that the books and
          records will accurately  reflect all transactions  entered into by the
          Corporation  and the  Subsidiaries,  proper  reserves  and  accurately
          reflect  the   financial   position  of  the   Corporations   and  the
          Subsidiaries.

     7.3  Insurance.   The  Corporation  agrees  to  maintain  or  cause  to  be
          maintained with  financially  sound and reputable  insurers rated A or
          above by A.M. Best,  insurance with respect to its assets and business
          and the assets and business of its Subsidiaries against loss or damage
          of  the  kinds  customarily  insured  against  by  similarly  situated
          entities  of  established  reputation  engaged  in the same or similar
          businesses,  in adequate  amounts.  At the request of the Lender,  the
          Corporation will furnish the Lender with evidence of the same.

     7.4  Payment of Taxes. The Corporation and each of the Subsidiaries  agrees
          to promptly pay or cause to be paid all taxes,  assessments  and other
          governmental  charges  levied or assessed on the  Corporation  or such
          Subsidiary,  franchises,  businesses,  income or  profits,  other than
          those taxes being  contested  in good faith,  by  appropriate  actions
          promptly  initiated and diligently  conducted if: (a) the  appropriate
          provision is made therefor; and (b) such contest does not and will not
          have  a  Material  Adverse  Effect  on  the  financial   condition  or
          operations of the Corporation or any Subsidiary.

     7.5  Compliance With Laws. The Corporation agrees to use reasonable efforts
          to comply and cause each  Subsidiary  to comply with all laws,  rules,
          regulations,  judgments,  orders and  decrees of any  governmental  or
          regulatory authority applicable to the Corporation,  any Subsidiary or
          their respective  assets and businesses,  the violation of which could
          have a Material Adverse Effect.

     7.6  Corporate Existence; Property and Operations. The Corporation and each
          Subsidiary agrees to preserve, protect and maintain: (a) its corporate
          existence;(b)   the  Concession   Agreements;   and  (c)  all  rights,
          franchises, accreditations,  privileges, and properties the failure of
          which to preserve, protect, and maintain would have a Material Adverse
          Effect. The Corporation and each Subsidiary will comply with all their
          respective material agreements,  obligations and contracts, including,
          but  not  limited  to,  all  leases,   any   agreements   relating  to
          indebtedness,   the  Existing  Indenture,  the  New  Indenture,   this
          Agreement and the Related Agreements.

     7.7  Inspection and Other Rights. Subject to the confidentiality provisions
          of  paragraph  16.11,  the Lender  will have the right to examine  the
          books,  records,  other  documents and data of the Corporation and the
          Subsidiaries  during normal  business hours after  reasonable  notice.
          Without limitation of the foregoing, the Lender will have the right to
          discuss and consult  during normal  business  hours with the officers,
          directors and  accountants  of the  Corporation  and the  Subsidiaries
          regarding the operations and financial  affairs of the Corporation and
          any Subsidiary.

     7.8  Use of Proceeds.  The Corporation  will use the proceeds from the sale
          of the CEC Note  hereunder and the sale of the Series B Notes for: (a)
          payment of all fees and expenses  incurred by the Lender in connection
          with the  transactions  contemplated by this Agreement and the Related
          Agreements;  (b) funding the Corporation's and the Subsidiaries' share
          of the costs and expenses of building  the Guaduas La Dorada  pipeline
          and  production   facilities   (the   "Pipeline");   (c)  funding  the
          Corporation's and the  Subsidiaries'  costs and expenses in preparing,
          drilling,  testing  and  completing  well  to test  the  Corporation's
          sub-thrust  prospect under the "Deep Dindal Contract" (the "Sub-Thrust
          Test Well"); (d) funding the payoff of the Corporation's  indebtedness
          to  Stillwater  National  Bank  in  the  principal  amount  of  up  to
          $10,000,000.00;  and (e) working  capital and other general  corporate
          purposes. The amounts necessary to fund the Corporation's  obligations
          under  subpart (c) hereof,  estimated  to be Fifteen  Million  Dollars
          ($15,000,000.00)  will be: (i) funded prior to the other amounts to be
          funded  pursuant  to this  paragraph;  (ii)  placed in escrow  with an
          escrow  agent  reasonably  satisfactory  to the  Lender  (the  "Escrow
          Agent") and on terms and conditions satisfactory to the Lender and the
          Corporation;  and (iii)  pledged to the Lender to secure the CEC Note,
          the Series A Notes and the Series B Notes. If the Sub-Thrust Test Well
          is not spudded  prior to February  28,  2002,  all funds  remaining in
          escrow  will  be used to make a  prepayment  on the CEC  Note  and the
          Series A Notes  or the  Series  B Notes  on a pro  rata  basis.  Funds
          remaining in escrow  after the drilling and testing of the  Sub-Thrust
          Test Well will be distributed to the Corporation to be used as working
          capital.

     7.9  Escrow of Interest  Payment.  So long as the CEC Note is  outstanding,
          the Corporation will, commencing on the Closing Date and continuing on
          or before the tenth  (10th) day of each  succeeding  month  thereafter
          through  July,  2003,  escrow with the Escrow Agent an amount equal to
          one-sixth (1/6th) of the next semi-annual  interest payment due on the
          senior notes issued under the Existing Indenture. The arrangement with
          the Escrow Agent will provide for: (a) a pledge of the escrow  account
          to the Lender as collateral agent for itself and the trustee under the
          New  Indenture;  (b)  notice to the  Lender in the event any  required
          deposit  is not made when due;  and (c) so long as no event of Default
          has  occurred  or is  continuing,  the  release  escrow  funds on each
          November 15 and May 15 to the trustee under the Existing Indenture for
          payments of interest due thereunder.

     7.10 Charter Amendments.  On written request of the Lender, the Corporation
          and each of the Subsidiaries agree to amend their respective corporate
          governance   documents  in  such  manner  as  the  Lender   reasonably
          determines  in order to  effectuate  the  covenants  set forth in this
          Agreement and in the Related Agreements.

     7.11 Exemption  Maintenance.  The Corporation and each of the  Subsidiaries
          will  continuously  maintain their respective status as of the Closing
          Date under the Colombian currency and tax regime applicable to oil and
          gas companies operating in Colombia.

     7.12 Pipeline   Operation.   The  Corporation  and  the  Subsidiaries  will
          continuously  operate and  maintain the Pipeline in good repair and in
          accordance with all applicable laws,  regulations,  rules and policies
          of the Colombian  government,  the Concession Agreements and any other
          contracts relating thereto.

     7.13 Dormant  Subsidiaries.  All of the Subsidiaries  except for Seven Seas
          Petroleum  Colombia  Inc.,  Petrolinson  SA, GHK Company  Colombia and
          Seven Seas Petroleum USA Inc., will be  continuously  maintained in an
          inactive  status and the  Corporation  will not conduct,  and will not
          permit  to be  conducted,  any  business  or  operations  in any  such
          Subsidiaries.

     7.14 Production Proceeds. The Corporation and each of the Subsidiaries will
          cause all amounts due from the sale,  production or processing of oil,
          gas or other  petroleum  products  (including  any  amounts  under the
          Concession Agreements) to be deposited:  (a) directly into one or more
          deposit accounts of the Corporation that are at all times subject to a
          first priority  perfected  lien under the Pledge  Agreement or similar
          arrangement,  all in form and substance satisfactory to the Lender; or
          (b) to the extent  that such  amounts  are  required  to remain in the
          Subsidiaries to fund reasonably  anticipated  working capital needs of
          the  Subsidiaries or remain under  Columbia's  jurisdiction,  directly
          into a deposit  account that permits  withdrawals by the  Subsidiaries
          prior to a Default but prohibits  withdrawals post Default without the
          prior  written  consent  of the  Lender  (all  in form  and  substance
          satisfactory  to the  Lender).  It is  anticipated  that  the  amounts
          deposited under the foregoing  clause (a) will be accounted for by the
          Corporation as dividends from the  Subsidiaries to the Corporation and
          will  include all  proceeds in United  States  Dollars  from the sale,
          production or processing of oil, gas or other petroleum  products.  In
          any event the failure of the  Corporation or Subsidiaries to make such
          deposits  of all  amounts  attributable  to the  sale,  production  or
          processing of oil, gas or other petroleum products as provided in this
          paragraph for any reason will constitute a Default.

8.  Corporation's   Negative   Covenants.   The  Corporation  and  each  of  the
Subsidiaries  hereby severally  covenants and agrees with the Lender that during
the Covenant Period,  unless the Lender otherwise  consents in writing,  neither
the Corporation nor any Subsidiary will directly or indirectly:

     8.1  Dividends.  Declare or pay,  or permit any  Subsidiary  which is not a
          wholly  owned  Subsidiary  to declare or pay to anyone  other than the
          Corporation  or a wholly  owned  Subsidiary  of the  Corporation,  any
          dividends  or  distributions  on any of the equity  securities  of the
          Corporation or any Subsidiary.

     8.2  Redemptions.  Redeem,  purchase or  otherwise  acquire,  or permit any
          Subsidiary  to directly or  indirectly  redeem,  purchase or otherwise
          acquire,   any  of  the  Corporation's  or  any  Subsidiary's   equity
          securities  except as  contemplated  by this  Agreement,  the  Related
          Agreements and the Rights Offering.

     8.3  Mergers. Merge or consolidate with any person or permit any Subsidiary
          to merge or consolidate  with any person (other than, in the case of a
          wholly-owned  Subsidiary,  with or into the  Corporation  or any other
          wholly-owned Subsidiary) or undertake any share exchange of any of the
          capital stock of the Corporation or any Subsidiary.

     8.4  Sale of Assets.  Except for the sale of oil, gas or other hydrocarbons
          in the ordinary course of business and the sale of obsolete equipment,
          sell, lease or otherwise dispose of, or permit any Subsidiary to sell,
          lease or  otherwise  dispose  of,  any  assets  in one or a series  of
          related  transactions  that represent five percent (5%) or more of the
          greater  of  the  Corporation's  consolidated  assets  or  income.  In
          addition,  neither the Corporation or any Subsidiary will sell,  grant
          or enter into any production  payment or similar  arrangement  whether
          volumetric or dollar denominated.

     8.5  Liquidations.  Liquidate,  dissolve  or effect a  recapitalization  or
          reorganization  in any  form  of  transaction,  except  by  merger  or
          consolidation not prohibited under paragraph 8.3 of this Agreement.

     8.6  Charter  Amendments.  Except as provided in paragraph  7.10,  make any
          amendment  to  the   Corporation's  or  any   Subsidiary's   corporate
          governance  documents  including,  but not  limited  to, an  amendment
          increasing  or  decreasing  the number of directors  constituting  the
          Board or changing its corporate domicile.

     8.7  Affiliate  Transactions.  Directly or indirectly  enter into or permit
          any  Subsidiary  to enter into or permit to exist any  transaction  or
          series of related transactions  (including the purchase,  sale, lease,
          exchange, transfer or disposition of property or assets, the rendering
          of any  service,  or any  contract,  agreement,  understanding,  loan,
          advance or  guarantee)  with,  or for the benefit of, any Affiliate of
          the  Corporation  or any  Subsidiary,  except:  (a) normal  employment
          arrangements and benefit  programs on reasonable  terms; (b) affiliate
          transactions  entered  into in  accordance  with  Section  4.16 of the
          Existing  Indenture;  or (c) as otherwise  permitted by this Agreement
          and the Related Agreements.

     8.8  Investments. Make or permit to exist, or permit any Subsidiary to make
          or permit to exist, any Investment  other than  Investments  permitted
          under  subparts  (ii),  (viii),  (ix)  and (xi) of the  definition  of
          Permitted Investments in the Existing Indenture and Investments in the
          oil and gas business in the Magdelana Valley area of Colombia.

     8.9  Capital  Expenditures.  Make, or permit any  Subsidiary  to make,  any
          capital expenditures  exceeding,  in the aggregate,  on a consolidated
          basis,  the  amounts  set forth in the Budget as revised  from time to
          time and approved by the Board.

     8.10 Loans.  Make, or permit any  Subsidiary to make, any loans or advances
          to, or guarantees for the benefit of, any person or entity, other than
          travel   advances  and  similar  loans  to  employees  not  to  exceed
          $500,000.00  at any one time in the aggregate and except for loans and
          advances  between  and  among  the  Corporation  and the  Subsidiaries
          evidenced by promissory  notes  pledged to the Lender  pursuant to the
          Pledge Agreement.

     8.11 Other  Business.  Enter into  (directly  or  indirectly  through a new
          subsidiary),  or permit any  Subsidiary to enter into,  the ownership,
          management  or  operation of any  business  other than the  businesses
          conducted by the  Corporation  and the  Subsidiaries as of the date of
          Closing or contemplated  by the written  business plan provided to the
          Lender prior to Closing.

     8.12 Subsidiaries.  Establish  or acquire any new  subsidiaries  including,
          without limitation, any interest in any corporation, limited liability
          company,   partnership,   trust,  association  or  other  entity.  The
          Subsidiaries will not issue any capital stock, equity interests or any
          instrument convertible, exercisable or exchangeable into the foregoing
          except as shown on Schedule "3.7" of this Agreement.

     8.13 Indebtedness.  Create, incur, assume or suffer to exist, or permit the
          Corporation and its Subsidiaries,  taken as a whole, to create, incur,
          assume  or  suffer  to  exist,  indebtedness  in an  aggregate  amount
          exceeding One Million Dollars ($1,000,000.00) at any time outstanding,
          other than: (a)  indebtedness to the holders of the  Corporation's  12
          1/2% Senior Notes due 2005;  (b) the CEC Note; (c) the Series A Notes;
          (d) the Series B Notes;  and (e) unsecured  trade debt in the ordinary
          course  of  business  not  more  than  sixty  (60)  days  past  due or
          indebtedness  in  respect  of  taxes,  assessments,  levies  or  other
          governmental charges which are not past due.

     8.14 Related Agreements. Amend, modify or waive any provision of any of the
          Related  Agreements  or fail to perform the  provisions  of any of the
          Related Agreements in any material respect.

     8.15 Restrictive  Agreements.  Enter  into,  become  a party  to or  become
          subject to, or permit any of its Subsidiaries to enter into,  become a
          party to or become subject to, any agreement or  instrument,  which by
          its  terms  would   (under  any   circumstance):   (a)   restrict  the
          Corporation's  or  any  Subsidiary's  right  to  perform  any  of  its
          obligations  pursuant  to the  terms of this  Agreement,  the  Related
          Agreements,  the Existing  Indenture or the New Indenture;  (b) grant,
          provide or issue registration  rights for any security which are equal
          to or  more  favorable  than  those  granted  under  the  Registration
          Agreement  (except  any such  rights  granted in  connection  with the
          Rights Offering);  or (c) give rise to any default,  termination right
          or the loss of any  benefit  upon the  exercise  of any  remedy by the
          Lender (except for the Existing Indenture and the New Indenture).

     8.16 Liens. Grant,  create,  assume or permit to continue in existence,  or
          permit any Subsidiary to grant,  create,  assume or permit to continue
          in existence,  any lien, security interest or encumbrance on any asset
          of the  Corporation or any  Subsidiary  other than liens for taxes not
          yet due and payable,  involuntary liens for obligations not yet due or
          contested in good faith and similar encumbrances.

     8.17 Transactions.  Enter into, assume or perform, or permit any Subsidiary
          to enter into, assume or perform, any material agreement, lease, sale,
          exchange,  contract or transaction which: (a) violates this Agreement,
          the Related  Agreements,  the Existing Indenture or the New Indenture;
          or (b) is not in the  Corporation's  ordinary course of business based
          on historical practices.

     8.18 Participating  Preferred Stock. Neither the Corporation nor any of the
          Subsidiaries  will issue any capital stock (other than Common Stock of
          the  Corporation)  or shares of any class preferred as to dividends or
          as  to  the   distribution  of  assets  on  voluntary  or  involuntary
          liquidation, dissolution or winding up.

     8.19 Debt  Prepayment.  Neither the Corporation nor any of the Subsidiaries
          will prepay, redeem, defease, exchange or purchase or materially alter
          the  payment  terms of any of:  (a) the  securities  issued  under the
          Existing Indenture;  (b) the Series A Notes; or (c) the Series B Notes
          (except pursuant to the Rights Offering).

     8.20 No Excess Working Capital to  Subsidiaries.  The Corporation  will not
          fund or  provide  its  Subsidiaries  with  funds  in  excess  of their
          reasonably anticipated working capital needs.

9. Related  Agreements.  The Corporation  hereby grants to the Lender all of the
rights, benefits and privileges set forth in each of the Related Agreements.

10.  Payment  or  Exchange  of Series B Notes.  The  Corporation  and the Lender
acknowledge  and agree that to the extent the Series A Notes and RO Warrants are
purchased  under the Rights  Offering  the  proceeds  raised by the  Corporation
therefrom  will be used to pay the  Series B Notes on a pro  rata  basis  unless
another  allocation of such proceeds  among the holders of the Series B Notes is
otherwise  agreed to in writing by the all of the holders of the Series B Notes.
After  consummation  of the issuance of the Series A Notes and RO Warrants under
the Rights Offering,  any remaining unissued Series A Notes and RO Warrants will
be issued by the  Corporation  to the Series B Notes  purchasers in exchange for
the Series B Notes plus an amount equal to accrued unpaid interest on the Series
A Notes to be  exchanged.  Such exchange will take place within twenty (20) days
after closing of the Rights Offering.

11. Default.  The Corporation  will be in default under this Agreement if any of
the following events occur (a "Default"):

     11.1 Nonpayment  of CEC Note. A default in payment when due of any interest
          on or  principal  of the CEC Note or a default in payment  when due of
          any  other  amount  payable  to the  Lender  under  the  terms of this
          Agreement or the Related Agreements; or

     11.2 Breach of Agreement.  Default in the  performance or observance of any
          covenant  contained  in this  Agreement,  the CEC  Note,  the  Related
          Agreements  or any other  agreement  between the  Corporation  and the
          Lender entered into in connection with this Agreement, the CEC Note or
          the Related  Agreements  including,  without implied  limitation,  the
          failure of the Corporation to pay or satisfy any redemption,  payment,
          purchase  or  other  obligation  with  respect  to the CEC  Note,  the
          Warrants or the Warrant  Shares even if such failure  results from any
          restriction  or  prohibition  on the  ability  of the  Corporation  to
          satisfy such obligations; or

     11.3 Representations  and  Warranties.   Any   representation,   statement,
          certificate,  schedule or report made or furnished to the Lender by or
          on behalf of the  Corporation or any Subsidiary  proves to be false or
          erroneous  in any  material  respect  or  any  warranty  ceases  to be
          complied with in any material respect; or

     11.4 Material Agreements.  The Corporation or any Subsidiary defaults under
          or fails to duly observe, perform or comply with any term or condition
          of  the  Existing  Indenture,   the  New  Indenture,   the  Concession
          Agreements or any other  contract,  instrument  or agreement  with any
          person if such  contract,  instrument  or agreement is material to the
          Corporation   or  any  Subsidiary  or  such  default  or  failure  can
          reasonably  be  expected  to  materially  and  adversely   effect  the
          Corporation,  any Subsidiary or their respective businesses or assets;
          or

     11.5 Indebtedness.  The default by the Corporation or any Subsidiary in the
          payment of any interest, principal or other amount on any indebtedness
          for borrowed  money owing to any person which is not cured in the time
          permitted by the documents governing such indebtedness or the maturity
          or acceleration of any such indebtedness; or

     11.6 Insolvency.  The Corporation or any Subsidiary admits the inability to
          pay its debts as such debts mature; or

     11.7 Bankruptcy.    The   institution   of   bankruptcy,    reorganization,
          readjustment of any debt,  liquidation or receivership  proceedings by
          or against the  Corporation  or any  Subsidiary  under the  Bankruptcy
          Code, as amended,  any part thereof,  or under any other laws, whether
          state, federal or foreign, for the relief of debtors, now or hereafter
          existing (which in the case of an involuntary  filing,  is not removed
          or dismissed in sixty [60] days); or

     11.8 Receivership.  The  appointment  of a  receiver  or  trustee  for  the
          Corporation, any Subsidiary or any substantial part of their assets or
          businesses or the discontinuance of business by the Corporation or any
          Subsidiary; or

     11.9 Judgment.  Entry  by  any  court  of  a  final  judgment  against  the
          Corporation  or any  Subsidiary in an amount  greater than Two Hundred
          Fifty Thousand  Dollars  ($250,000.00)  or an attachment of any of the
          assets of the  Corporation or any Subsidiary by any means,  including,
          without limitation, levy, distraint,  replevin, or self-help, which is
          not discharged or stayed within thirty (30) days thereof; or

    11.10 Concession Contracts.  The expiration,  termination or material breach
          of  any  of  the  Concession  Agreements  of  the  Corporation  or the
          Subsidiaries  which  would  have  a  Material  Adverse  Effect  or the
          seizure,   nationalization   or   forfeiture  of  any  assets  of  the
          Corporation or the Subsidiaries; or

    11.11 Indentures.  The  occurrence of an event of default under the Existing
          Indenture or the New Indenture  which is not cured or waived in strict
          compliance with the terms thereof; or

    11.12 Change of Control.  The occurrence of any of the following events: (a)
          any  person  other  than the  Corporation  or one of the  Subsidiaries
          acquires or holds any legal or beneficial  ownership of any Subsidiary
          whether  now or  hereafter  existing;  (b) any  Person  or two or more
          Persons acting as a group acquires  beneficial  ownership  (within the
          meaning of Rule 13d-3 of the SEC under the Securities  Exchange Act of
          1934, as amended,  without consideration of the sixty (60) day period,
          and  including  holding  proxies to vote for the election of directors
          other  than  proxies  held by the  Corporation's  management  or their
          designees   to  be  voted  in  favor  of  persons   nominated  by  the
          Corporation's Board) of fifty percent (50%) or more of the outstanding
          voting  securities  of  the  Corporation,  measured  by  voting  power
          (including  both common stock and any preferred  stock or other equity
          securities  entitling the holders  thereof to vote with the holders of
          common  stock in elections  for  directors  of the  Corporation);  (c)
          one-third  or more of the  directors  of the  Corporation  consists of
          persons not  nominated by the  Corporation's  Board (not  including as
          Board nominees any directors  which the Board is obligated to nominate
          pursuant to  shareholders  agreements,  voting trust  arrangements  or
          similar  arrangements);  or (d) the  merger  or  consolidation  of the
          Corporation  with or into  another  person or entity or the  merger or
          consolidation of another person or entity into the Corporation, or the
          sale of all or  substantially  all of the assets of the Corporation or
          any  Subsidiary  to another  person or entity  (other than a person or
          entity that is wholly  controlled by the Corporation or one or more of
          the   Subsidiaries),   and,   in  the  case  of  any  such  merger  or
          consolidation,  the securities of the Corporation that are outstanding
          immediately  prior to such transaction and which represent one hundred
          percent  (100%) of the  aggregate  voting power of the voting stock of
          the Corporation are changed into or exchanged for cash,  securities or
          property,  unless  pursuant to such  transaction  such  securities are
          changed into or exchanged for, in addition to any other consideration,
          securities of the surviving  corporation  that  represent  immediately
          after such  transaction,  at least a majority of the aggregate  voting
          power of the voting securities of the surviving corporation.

    11.13 Opportunity to Cure. In the event the  Corporation  cures or causes to
          be cured such Default within twenty (20) days after receipt of written
          notice  thereof,  the parties  will be  restored  to their  respective
          rights and  obligations  under  this  Agreement  as if no Default  had
          occurred,  except  that no right to cure or notice of Default  will be
          given as to events of Default in paragraphs  11.1,  11.5,  11.6, 11.7,
          11.8, 11.9, 11.10, 11.11 or 11.12. The Borrower's  opportunity to cure
          will be  applicable as herein set forth  notwithstanding  any contrary
          provisions contained in any of the Related Agreements.

12.  Remedies.  On the occurrence of a Default the Lender may elect to do any of
the following:

     12.1 Exercise  Remedy.  The  Lender  may  exercise  any remedy at law or in
          equity  or any  remedy  provided  by  this  Agreement  or the  Related
          Agreements.

     12.2 Selective  Enforcement.  In the event the Lender elects to selectively
          and successively  enforce the Lender's rights under any one or more of
          this  Agreement  or the  Related  Agreements,  such action will not be
          deemed a waiver or  discharge  of any other right or remedy until such
          time as all of the  Corporation's  obligations  thereunder  have  been
          satisfied.

     12.3 Waiver of Default. By an instrument or instruments in writing,  signed
          by  the  Lender,  waive  any  Default  which  occurs  and  any  of the
          consequences  of such  Default,  and, in such event,  the Lender,  the
          Corporation and the Subsidiaries  will be restored to their respective
          former  positions,  rights and obligations  hereunder.  Any default so
          waived  will,  for all purposes of this  Agreement,  be deemed to have
          been cured and not to be continuing, but no such waiver will extend to
          any  subsequent  or other  Default or impair any  consequence  of such
          subsequent or other Default.

13.  Agent   Appointment;   Jurisdiction.   The  Corporation  and  each  of  the
Subsidiaries hereby appoints CT Corporation, located in Oklahoma City, Oklahoma,
or such other person as may be designated by the Corporation and approved by the
Lender,  in  writing,  as the  Corporation's  and the  Subsidiaries'  agent (the
"Agent") for the purpose of accepting  notices and service of process  until the
payment  in full of the CEC  Note  and so  long as the  Lender  owns  any of the
Warrants  or  the  Warrant  Shares.  Neither  the  Corporation  nor  any  of the
Subsidiaries  will remove or terminate the Agent unless prior  thereto:  (a) the
Lender has  consented  to such  removal or  termination  in  writing;  and (b) a
substitute  Agent acceptable to the Lender has been appointed by the Corporation
and each of the Subsidiaries.  Any notice or service of process delivered to the
Agent will be deemed to be served on the  Corporation and the  Subsidiaries  for
purposes of this Agreement and the Related  Agreements.  EACH OF THE CORPORATION
AND THE SUBSIDIARIES  HEREBY  IRREVOCABLY  SUBMITS ITSELF TO THE JURISDICTION OF
THE STATE AND FEDERAL  COURTS  SITTING IN THE STATE OF  OKLAHOMA  AND AGREES AND
CONSENTS  THAT  SERVICE  OF  PROCESS  MAY BE MADE UPON THE  CORPORATION  AND THE
SUBSIDIARIES  BY SERVICE ON THE AGENT IN ANY LEGAL  PROCEEDING  RELATING TO THIS
AGREEMENT  OR THE RELATED  AGREEMENTS  BY ANY MEANS  ALLOWED  UNDER  OKLAHOMA OR
FEDERAL LAW. ANY LEGAL  PROCEEDING  ARISING OUT OF OR IN ANY WAY RELATED TO THIS
AGREEMENT  OR ANY OF THE  RELATED  AGREEMENTS  WILL  BE  BROUGHT  AND  LITIGATED
EXCLUSIVELY  IN THE UNITED  STATES  DISTRICT  COURT FOR THE WESTERN  DISTRICT OF
OKLAHOMA, TO THE EXTENT IT HAS SUBJECT MATTER JURISDICTION, AND OTHERWISE IN THE
OKLAHOMA DISTRICT COURT SITTING IN OKLAHOMA COUNTY, OKLAHOMA. THE PARTIES HERETO
HEREBY  WAIVE  AND AGREE  NOT TO  ASSERT,  BY WAY OF  MOTION,  AS A  DEFENSE  OR
OTHERWISE,  THAT ANY SUCH PROCEEDING IS BROUGHT IN AN INCONVENIENT FORUM OR THAT
THE VENUE  THEREOF IS  IMPROPER,  AND  FURTHER  AGREE TO A TRANSFER  OF ANY SUCH
PROCEEDING  TO A FEDERAL  COURT  SITTING IN THE OKLAHOMA  CITY,  OKLAHOMA TO THE
EXTENT THAT IT HAS SUBJECT MATTER  JURISDICTION,  AND OTHERWISE TO A STATE COURT
IN OKLAHOMA COUNTY,  OKLAHOMA.  IN FURTHERANCE  THEREOF,  THE  CORPORATION,  THE
SUBSIDIARIES  AND THE LENDER EACH HEREBY  ACKNOWLEDGE  AND AGREE THAT IT WAS NOT
INCONVENIENT  FOR THEM TO  NEGOTIATE  AND  RECEIVE  FUNDING OF THE  TRANSACTIONS
CONTEMPLATED  BY THIS  AGREEMENT  IN SUCH  COUNTY  AND  THAT IT WILL BE  NEITHER
INCONVENIENT NOR UNFAIR TO LITIGATE OR OTHERWISE  RESOLVE ANY DISPUTES OR CLAIMS
IN A COURT SITTING IN SUCH COUNTY.

14.  Indemnification.  The  Corporation  agrees to  indemnify,  pay and hold the
Lender and its Affiliates  and any  subsequent  holder of the CEC Note, and each
such person's officers, directors, employees and agents and each person, if any,
who controls the Lender within the meaning of Section 15 of the  Securities  Act
or  Section  20 of  the  Exchange  Act  (collectively  called  the  "Indemnified
Parties"),  harmless  from and  against  any and all  liabilities,  obligations,
losses, damages,  penalties,  actions, judgments, suits, claims, costs, expenses
and  disbursements of any kind or nature whatsoever  including,  but not limited
to, the fees and  disbursements  of counsel  for such  Indemnified  Parties,  in
connection  with  any  investigative,  administrative  or  judicial  proceeding,
whether or not such  Indemnified  Parties will be  designated  a party  thereto,
which may be imposed on,  incurred  by, or  asserted  against  such  Indemnified
Party, in any manner relating to or arising out of the transactions contemplated
by this  Agreement,  the Related  Agreements  or the ownership of any of the CEC
Note,  Warrants or Warrant  Shares or caused by any untrue  statement or alleged
untrue  statement of a material  fact  contained in the Rights  Offering (or any
amendment or supplement  thereto),  any preliminary  offering  memorandum or any
Rule 144A  Information  provided by the  Corporation  or any  Subsidiary  to any
holder or prospective  purchaser of the Series A Notes or caused by any omission
or alleged  omission  to state  therein a material  fact  required  to be stated
therein or necessary to make the statements  therein not misleading (a "Claim"),
except that the Corporation will have no obligation  hereunder to an Indemnified
Party with  respect to any such  liabilities  arising  directly out of the gross
negligence or willful  misconduct of such  Indemnified  Party or with respect to
any Claim caused by any untrue statement or omission or alleged untrue statement
or omission based upon information  relating to such Indemnified Party furnished
in writing to the  Corporation  by such  Indemnified  Party as  determined  by a
final,  non-appealable  judgment of a court of  competent  jurisdiction.  If any
indemnity provided for in the preceding sentence is not available solely because
it is found to be  contrary to public  policy or  otherwise  unlawful,  then the
Corporation and the Indemnified Parties will contribute to the amount payable in
such  proportion as is appropriate  to reflect the relative  faults and benefits
and any other  relevant  equitable  considerations  provided,  however,  that no
person  guilty of  fraudulent  misrepresentation  (within the meaning of Section
11(f) of the Securities  Act) will be entitled to  contribution  from any person
who was not guilty of such fraudulent misrepresentation.

     14.1 Procedure.  If any  Claim or  alleged  Claim is  brought  against  any
          Indemnified  Party in respect of which such  Indemnified  Party may be
          indemnified  under  this  paragraph  14.1  by  the  Corporation,  such
          Indemnified Party will promptly notify the Corporation in writing. The
          Corporation  at its option  may  assume  the  defense of any action in
          respect of which it has  acknowledged its obligation to indemnify such
          Indemnified  Party  under  this  paragraph  14.1.  If the  Corporation
          assumes the defense of any action,  the Indemnified  Party will not be
          liable  for any  settlement  thereof  without  its  consent  (but such
          consent will not be unreasonably withheld). If the Corporation assumes
          the defense of any such action,  such Indemnified  Party will have the
          right to employ separate  counsel in such action and to participate in
          the defense thereof, but the fees and expenses of such counsel will be
          paid by such  Indemnified  Party unless in the  reasonable  opinion of
          such  Indemnified  Party there may be a conflict between the positions
          of the  Corporation  and of such  Indemnified  Party in conducting the
          defense of such action or that there may be legal  defenses  available
          to such Indemnified Party different from or in addition to those which
          counsel to the Corporation  would be able to raise, in which event the
          fees and expenses of such counsel will be paid by the Corporation.

     14.2 Environmental and Governmental. Without limiting the generality of the
          indemnity set out in this paragraph 14, the  Corporation  will defend,
          protect,  indemnify  and  hold  harmless  the  Lender  and  all  other
          Indemnified  Parties from and against any and all  actions,  causes of
          action,  suits, losses,  liabilities,  damages,  injuries,  penalties,
          fees,  costs,  expenses  and claims of any and every  kind  whatsoever
          paid, incurred or suffered by, or asserted against,  the Lender or any
          other Indemnified  Parties pursuant to environmental laws with respect
          to the  past,  present  or  future  operations  or  facilities  of the
          Corporation,  any  Subsidiary  or  any  predecessors,  successors,  or
          Affiliates   thereof.   The   Corporation   also  agrees  to  pay  all
          governmental  assessments,  charges or taxes  (except  income  taxes),
          including  any interest or penalties  thereon,  at any time payable or
          ruled to be payable in respect of the existence,  execution,  delivery
          or  performance  of this  Agreement and the Related  Agreements or the
          issuance or  existence  of the CEC Note,  the  Warrants or the Warrant
          Shares, by reason of an existing or hereafter  enacted federal,  state
          or local statute,  and to indemnify and hold the Lender,  and each and
          every  holder of the CEC Note,  the  Warrants or the  Warrant  Shares,
          harmless  against  liability in connection with any such  assessments,
          charges or taxes.

     14.3 Other Remedies. The remedies provided for in this paragraph 14 are not
          exclusive  and will  not  limit  any  rights  or  remedies  which  may
          otherwise be available to any Indemnified Party at law or in equity.

15.  Effectiveness  of Agreement and  Termination.  This Agreement  shall become
effective  upon the  execution  and  delivery of this  Agreement  by the parties
hereto.  This Agreement may be terminated at any time on or prior to the Closing
Date by the Lender by written notice to the  Corporation if any of the following
has occurred: (a) any outbreak or escalation of hostilities or other national or
international  calamity or crisis or change which in the Lender's  judgment,  is
material and adverse and, in the Lender's  judgment,  makes it  impracticable to
market  the Series A Notes on the terms and in the  manner  contemplated  in the
Rights  Offering,  (b) the  suspension  or  material  limitation  of  trading in
securities or other  instruments  on the New York Stock  Exchange,  the American
Stock Exchange,  the Chicago Board of Options Exchange,  the Chicago  Mercantile
Exchange,  the  Chicago  Board of Trade or the Nasdaq  Market or  limitation  on
prices for  securities or other  instruments  on any such exchange or the Nasdaq
National  Market  unless such  suspension  or limitation is removed prior to the
Closing Date, (c) the suspension of trading of any securities of the Corporation
on any exchange or in the  over-the-counter  market  unless such  suspension  is
removed prior to the Closing Date,  (d) the  enactment,  publication,  decree or
other promulgation of any foreign, federal or state statute, regulation, rule or
order of any  court  or  other  governmental  authority  which  in the  Lender's
reasonable  opinion  materially and adversely  affects,  or will  materially and
adversely affect,  the business,  prospects,  financial  condition or results of
operations of the Corporation and its Subsidiaries, taken as a whole, or (e) the
declaration of a banking moratorium by foreign, federal or state authorities.

16. Miscellaneous. The parties further agree as follows:

     16.1 Fees  and  Expenses.  The  Corporation  agrees  to pay on  demand  the
          following amounts:  (a) all of the Corporation's costs and expenses of
          compliance  with  all  agreements  and  conditions  contained  in this
          Agreement and in the Related  Agreements;  (b) attorney fees, expenses
          and  disbursements  of counsel to the  Lender in  connection  with the
          preparation,  negotiation  and  execution  of this  Agreement  and the
          Related Agreements;  (c) all other out-of-pocket  expenses incurred by
          the Lender in connection with their due diligence investigation of the
          Corporation  and the  performance  of this  Agreement  and the Related
          Agreements  by the Lender;  and (d) all costs and expenses  (including
          attorney's  fees and costs)  incurred  by the Lender or any holders of
          the CEC Note,  the Warrants or the Warrant Shares arising out of or in
          connection with the administration, enforcement or preservation of any
          rights  under this  Agreement  or the  Related  Agreements  including,
          without  limitation,  the collection or enforcement of this Agreement,
          the CEC Note,  and the Related  Agreements  by  judicial  proceedings,
          proceedings  under  Chapter  7 or 11 of  the  Bankruptcy  Code  or any
          successor statute thereto, or otherwise.

     16.2 Consent to Amendments;  Waivers.  The provisions of this Agreement may
          be amended or waived at any time only by the written  agreement of the
          Corporation,  the  Subsidiaries  and the Lender.  Any waiver,  permit,
          consent or approval of any kind or character on the part of the Lender
          of any  provisions  or conditions  of this  Agreement  must be made in
          writing  and will be  effective  only to the extent  specifically  set
          forth in such writing.  No course of dealing  between the  Corporation
          and the Lender and no delay in exercising any right,  remedy, or power
          conferred  hereby,  by the  Related  Agreements,  or now or  hereafter
          existing at law or under equity, by statute or otherwise, will operate
          as a waiver of or otherwise prejudice any such right, power or remedy.

     16.3 Representations and Warranties.  All  representations,  warranties and
          covenants  contained  herein  or  made  in  writing  by any  party  in
          connection  herewith  will survive the  execution and delivery of this
          Agreement  and  any  investigation  made  at any  time,  or  knowledge
          obtained or capable of being  obtained at any time, by or on behalf of
          the Lender or any other holder of the CEC Note.

     16.4 Successors and Assigns. Except as otherwise expressly provided herein,
          all  covenants  and  agreements  contained in this  Agreement by or on
          behalf of any of the parties hereto will bind and inure to the benefit
          of the  respective  successors  and  assigns  of the  parties  hereto,
          whether so  expressed  or not.  In  addition,  and  whether or not any
          express  assignment  has been made,  the  provisions of this Agreement
          which are for the  benefit of the Lender are also for the  benefit of,
          and enforceable by, any subsequent holder of the CEC Note.

     16.5 Severability. Whenever possible, each provision of this Agreement will
          be  interpreted  in such  manner as to be  effective  and valid  under
          applicable  law, but if any provision of this  Agreement is held to be
          prohibited by or invalid under  applicable law, such provision will be
          ineffective  only to the  extent of such  prohibition  or  invalidity,
          without invalidating the remainder of this Agreement.

     16.6 Construction; Currency. The descriptive headings of this Agreement are
          inserted for  convenience  of reference  only and do not  constitute a
          part of and will  not be  utilized  in  interpreting  this  Agreement.
          Except as  expressly  provided  herein,  all  currency  amounts are in
          United  States  Dollars  and any and  all  payments  are to be made in
          United States Dollars.

     16.7 Notices. Any notice, demand or communication  required or permitted to
          be given by any  provision  of this  Agreement  will be in writing and
          will  be  deemed  to have  been  given  and  received  when  delivered
          personally or by telefacsimile to the party designated to receive such
          notice, or on the date following the day sent by overnight courier, or
          on the third (3rd)  business  day after the same is sent by  certified
          mail,  postage and charges  prepaid,  directed to the addresses of the
          parties set forth on the  signature  pages  hereto or to such other or
          additional addresses as any party might designate by written notice to
          the other parties.

     16.8 Governing Law. All questions concerning the construction, validity and
          interpretation   of  this  Agreement,   and  the  performance  of  the
          obligations imposed by this Agreement, will be governed by the laws of
          the State of Oklahoma  applicable  to contracts  made and wholly to be
          performed in that state.

     16.9 Exhibits  and  Schedules.  All exhibits  and  schedules  hereto are an
          integral part of this Agreement.

    16.10 Exchange  of  Certificates.  Upon  surrender  by  any  holder  to  the
          Corporation  of any Warrants or  certificates  evidencing  any Warrant
          Shares,  the  Corporation,  at its  expense,  will  issue in  exchange
          therefor,   and  deliver  to  such  holder,   a  new   certificate  or
          certificates representing such shares of stock of the Corporation,  in
          such denomination or denominations as may be requested by such holder.
          Upon receipt of evidence  satisfactory to the Corporation of the loss,
          theft,  destruction or mutilation of any certificate  representing any
          Warrants or Warrant Shares,  and in case of any such mutilation,  upon
          surrender and cancellation of such certificate, the Corporation at its
          expense  will issue and deliver to any such  holder a new  certificate
          evidencing such warrants or shares of stock of the Corporation of like
          tenor,  in  lieu  of  such  lost,   stolen,   destroyed  or  mutilated
          certificate.

    16.11 Confidentiality.  The  Lender  recognizes  that  the  Corporation  may
          provide the Lender access to  information  which is of a  confidential
          and  proprietary  nature.  Except as may be required in the opinion of
          counsel to the Lender in connection with any litigation discovery, the
          SEC or any other  governmental  agency or under other  applicable law,
          the  Lender  agrees  not to  disclose  to any  person,  other than the
          Lender's officers, employees, financial institutions or consultants or
          legal   counsel   who  are   subject  to  a  general   obligation   of
          confidentiality,  nor use for any  purpose,  other than in  connection
          with this Agreement and the Related Agreements, any information,  data
          or material  (regardless of form) which is clearly marked confidential
          and  delivered  to the  Lender  by  the  Corporation  pursuant  to the
          provisions of this Agreement  (the  "Confidential  Information").  The
          term  "Confidential  Information"  will not  include  any  information
          which:  (a) at the time of  disclosure to the Lender is already in the
          Lender's  possession  on a  non-confidential  basis or  thereafter  is
          generally  available to the public; (b) was available to the Lender on
          a non-confidential basis from a source other than the Corporation;  or
          (c) has been independently acquired or developed by the Lender without
          violating the Lender's obligations under this paragraph 16.11.

    16.12 Public  Announcements.  Prior to Closing  and at all times  during the
          term of this  Agreement,  the Corporation  and the  Subsidiaries  will
          consult with the Lender before  issuing any press release or otherwise
          making  any  public   statements  with  respect  to  the  transactions
          contemplated by this Agreement and will not issue any press release or
          make any such public  statement  relating to this  Agreement  prior to
          obtaining the written approval of the Lender; provided,  however, that
          such approval will not be required where such release or  announcement
          is  required  by  applicable  law  rule or  regulation;  and  provided
          further, that the Corporation may respond to inquiries by the press or
          others regarding the transactions  contemplated by this Agreement,  so
          long as such responses are  consistent  with  previously  issued press
          releases.

    16.13 Final Agreement. This Agreement,  together with the Related Agreements
          constitutes the complete and final agreement of the parties concerning
          the matters  referred to herein,  and supersedes all prior  agreements
          and understandings.

    16.14 Execution  in  Counterparts.  This  Agreement  may be  executed in any
          number of  counterparts,  each of which when so executed and delivered
          will be  deemed  an  original,  and such  counterparts  together  will
          constitute  one  instrument.  The parties  hereto have  executed  this
          Agreement on the date first set forth above.

    16.15 ACKNOWLEDGMENTS  AND  ADMISSIONS.  EACH  OF THE  CORPORATION  AND  THE
          SUBSIDIARIES HEREBY REPRESENTS, WARRANTS, ACKNOWLEDGES AND ADMITS THAT
          (A)  EACH  OF  THE  CORPORATION  AND  THE  SUBSIDIARIES  HAS  MADE  AN
          INDEPENDENT DECISION TO ENTER INTO THIS AGREEMENT, WITHOUT RELIANCE ON
          ANY REPRESENTATION,  WARRANTY,  COVENANT OR UNDERTAKING BY THE LENDER,
          WHETHER WRITTEN, ORAL OR IMPLICIT,  OTHER THAN AS EXPRESSLY SET OUT IN
          THIS  AGREEMENT  OR IN  ANOTHER  DOCUMENT  EXECUTED  BY THE LENDER AND
          DELIVERED  AFTER THE DATE  HEREOF,  (B) THERE ARE NO  REPRESENTATIONS,
          WARRANTIES,  COVENANTS, UNDERTAKINGS OR AGREEMENTS BY THE LENDER AS TO
          THE  PURCHASE  OF THE CEC NOTE  EXCEPT  AS  EXPRESSLY  SET OUT IN THIS
          AGREEMENT,  (C) THE  LENDER  HAS NO  FIDUCIARY  OBLIGATION  TOWARD THE
          CORPORATION OR THE  SUBSIDIARIES  WITH RESPECT TO THIS AGREEMENT,  THE
          RELATED AGREEMENTS OR THE TRANSACTIONS CONTEMPLATED HEREBY OR THEREBY,
          AND  (D)  THE  LENDER  HAS  RELIED  UPON  THE   TRUTHFULNESS   OF  THE
          ACKNOWLEDGMENTS  IN THIS  PARAGRAPH  16.14 IN  DECIDING TO EXECUTE AND
          DELIVER THIS AGREEMENT AND TO BECOME OBLIGATED HEREUNDER.

    16.16 JOINT  ACKNOWLEDGMENT.  THIS WRITTEN  AGREEMENT  REPRESENTS  THE FINAL
          AGREEMENT  BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED BY EVIDENCE
          OF  PRIOR,  CONTEMPORANEOUS  OR  SUBSEQUENT  ORAL  AGREEMENTS  OF  THE
          PARTIES. THERE ARE NO UNWRITTEN ORAL AGREEMENTS BETWEEN THE PARTIES.

    16.17 WAIVER OF JURY TRIAL,  PUNITIVE DAMAGES,  ETC. EACH OF THE LENDER, THE
          CORPORATION  AND  THE  SUBSIDIARIES  HEREBY  KNOWINGLY,   VOLUNTARILY,
          INTENTIONALLY  AND IRREVOCABLY  (A) WAIVES,  TO THE MAXIMUM EXTENT NOT
          PROHIBITED  BY LAW,  ANY  RIGHT  IT MAY  HAVE TO A TRIAL  BY A JURY IN
          RESPECT OF ANY LITIGATION  BASED HEREON,  OR DIRECTLY OR INDIRECTLY AT
          ANY TIME ARISING OUT OF, UNDER OR IN CONNECTION WITH THIS AGREEMENT OR
          ANY  TRANSACTION  CONTEMPLATED  HEREBY  OR  ASSOCIATED  HEREWITH,  (B)
          WAIVES,  TO THE MAXIMUM EXTENT NOT PROHIBITED BY LAW, ANY RIGHT IT MAY
          HAVE TO CLAIM OR RECOVER IN ANY SUCH LITIGATION ANY "SPECIAL DAMAGES,"
          AS  DEFINED  BELOW,  (C)  CERTIFIES  THAT  NO  PARTY  HERETO  NOR  ANY
          REPRESENTATIVE  OR  COUNSEL  FOR ANY  PARTY  HERETO  HAS  REPRESENTED,
          EXPRESSLY OR  OTHERWISE,  OR IMPLIED THAT SUCH PARTY WOULD NOT, IN THE
          EVENT OF LITIGATION,  SEEK TO ENFORCE THE FOREGOING  WAIVERS,  AND (D)
          ACKNOWLEDGES THAT IT HAS BEEN INDUCED TO ENTER INTO THIS AGREEMENT AND
          THE  TRANSACTIONS  CONTEMPLATED  HEREBY BY,  AMONG OTHER  THINGS,  THE
          MUTUAL WAIVERS AND CERTIFICATIONS CONTAINED IN THIS PARAGRAPH. AS USED
          IN  THIS   PARAGRAPH,   "SPECIAL   DAMAGES"   INCLUDES   ALL  SPECIAL,
          CONSEQUENTIAL,  EXEMPLARY  OR  PUNITIVE  DAMAGES  (REGARDLESS  OF  HOW
          NAMED),  BUT DOES NOT  INCLUDE  ANY  PAYMENTS OR FUNDS WHICH ANY PARTY
          HERETO HAS  EXPRESSLY  PROMISED  TO PAY OR DELIVER TO ANY OTHER  PARTY
          HERETO.

     IN WITNESS WHEREOF,  the Corporation,  the Subsidiaries and the Lender have
executed this Agreement as of the date first above written.

                                SEVEN SEAS PETROLEUM INC., a Cayman
                                Islands exempted company limited by shares


                                By  LARRY A. RAY
                                    Larry A. Ray, President

                                                             (the "Corporation")


                                SEVEN SEAS PETROLEUM HOLDINGS INC., a
                                Cayman Islands exempted company limited by
                                shares


                                By  LARRY A. RAY
                                    Larry A. Ray, President


                                SEVEN SEAS PETROLEUM TURKEY INC., a
                                British Columbia corporation


                                By  LARRY A. RAY
                                    Larry A. Ray, President


                                SEVEN SEAS RESOURCES AUSTRALIA  INC., a
                                British Columbia corporation


                                By  LARRY A. RAY
                                    Larry A. Ray, President


                                SEVEN SEAS PETROLEUM USA INC., a Delaware
                                corporation


                                By  LARRY A. RAY
                                    Larry A. Ray, President


                                SEVEN SEAS PETROLEUM AUSTRALIA INC., a
                                Cayman Islands exempted company limited by
                                shares


                                By  LARRY A. RAY
                                    Larry A. Ray, President


                                SEVEN SEAS PETROLEUM PNG INC., a Cayman
                                Islands exempted company limited by shares


                                By  LARRY A. RAY
                                    Larry A. Ray, President


                                SEVEN SEAS PETROLEUM ARGENTINA INC., a
                                Cayman Islands exempted company limited by
                                shares


                                By  LARRY A. RAY
                                    Larry A. Ray, President


                                SEVEN SEAS PETROLEUM MEDITERRANEAN
                                INC., a Cayman Islands exempted company limited
                                by shares


                                By  LARRY A. RAY
                                    Larry A. Ray, President


                                SEVEN SEAS PETROLEUM TURKEY, INC., a
                                Cayman Islands exempted company limited by
                                shares


                                By  LARRY A. RAY
                                    Larry A. Ray, President


                                SEVEN SEAS PETROLEUM COLOMBIA INC., a
                                Cayman Islands exempted company limited by
                                shares


                                By  LARRY A. RAY
                                    Larry A. Ray, President


                                PETROLINSON S.A.., a Panamanian corporation


                                By  LARRY A. RAY
                                    Larry A. Ray, President


                                GHK COMPANY COLOMBIA, an Oklahoma
                                corporation


                                By  LARRY A. RAY
                                    Larry A. Ray, President

                                GUADUAS PIPELINE COMPANY, a Cayman
                                Islands exempted company limited by shares


                                By  LARRY A. RAY
                                    Larry A. Ray, President

                                                            (the "Subsidiaries")

                                Notice Addresses:

                                Seven Seas Petroleum, Inc.
                                Attention: Larry A. Ray, President
                                5555 San Felipe, Suite 1700
                                Houston, Texas 77056
                                Telefacsimile: (713) 621-9770

                                and

                                McAfee & Taft
                                Attention: Gary Fuller
                                211 North Robinson
                                10th Floor
                                Oklahoma City, Oklahoma 73102
                                Telefacsimile: (405) 235-4439


                                CHESAPEAKE ENERGY CORPORATION,
                                an Oklahoma corporation


                                By  AUBREY K. MCCLENDON
                                    Aubrey K. McClendon, Chief Executive Officer

                                                                  (the "Lender")

                                Notice Addresses:

                                Chesapeake Energy Corporation
                                Attention: Marcus C. Rowland
                                6100 North Western
                                Oklahoma City, Oklahoma  73118
                                Telefacsimile: (405) 879-9580

                                and

                                Commercial Law Group, P.C.
                                Attention: Ray Lees
                                2725 Oklahoma Tower
                                210 Park Avenue
                                Oklahoma City, Oklahoma  73102
                                Telefacsimile:  (405) 232-5553

                                  Exhibit "B"

THE WARRANTS AND THE ORDINARY  SHARES TO BE ISSUED PURSUANT TO THIS WARRANT HAVE
NOT BEEN  REGISTERED  UNDER ANY FEDERAL OR STATE  SECURITIES LAWS AND MAY NOT BE
SOLD,  TRANSFERRED,  ASSIGNED OR OTHERWISE DISPOSED OF ABSENT REGISTRATION UNDER
THE SECURITIES ACT OF 1933 AND ANY APPLICABLE  STATE  SECURITIES LAWS UNLESS AND
UNTIL THE HOLDER HEREOF PROVIDES (i) INFORMATION REASONABLY NECESSARY TO CONFIRM
THAT SUCH  REGISTRATION  IS NOT  REQUIRED  OR (ii) AN  OPINION OF COUNSEL TO THE
EFFECT THAT SUCH REGISTRATION IS NOT REQUIRED.


                                  WARRANT NO. 1




July 23, 2001                    For the Purchase of 12,612,140 Ordinary Shares
                                 of Seven Seas Petroleum, Inc.


     FOR VALUE RECEIVED,  SEVEN SEAS PETROLEUM,  INC., a Cayman Islands exempted
company  limited by shares  (the  "Corporation"),  hereby  grants to  CHESAPEAKE
ENERGY  CORPORATION,   an  Oklahoma  corporation,   or  its  registered  assigns
(collectively the "Holder"),  the right (the "Warrants") to purchase at any time
before the  Expiration  Date (as hereafter  defined)  twelve million six hundred
twelve thousand one hundred forth (12,612,140) duly authorized,  validly issued,
fully paid and non-assessable shares (the "Warrant Shares") of the Corporation's
ordinary shares, $.0001 par value (the "Ordinary Shares"), at the Exercise Price
(as hereafter  defined) and on the terms and  conditions  herein set forth.  The
number of Warrant Shares and the Exercise Price will be subject to adjustment as
provided in this Warrant.  This Warrant is issued subject to the following terms
and conditions:

1. Exercise of Warrant. The Warrants are exercisable at the option of the Holder
in whole or in part at any time prior to the Expiration  Date by the delivery to
the Corporation of written notice of the exercise of the Warrants specifying the
number of  Warrant  Shares to be  acquired,  surrender  of this  Warrant  to the
Corporation and  satisfaction of the Exercise Price for the Warrant Shares to be
acquired   through  such  exercise.   The  Warrants  will  be  deemed  exercised
immediately  prior to the close of business on the day that all of the foregoing
requirements  for the  exercise of the  Warrants  are  completed  and the person
entitled to receive the Warrant  Shares will be treated for all  purposes as the
holder of record of such Warrant Shares at such time including,  without implied
limitation,  the right to vote,  receive dividends and to receive  distributions
for which the record  date falls on or after such date.  As promptly as possible
after such date (in any event  within five (5)  business  days) the  Corporation
will deliver to the Holder a stock  certificate  evidencing  the Warrant  Shares
covered  by the  exercise.  In the case of an  exercise  for  less  than all the
Warrant Shares the Corporation  will cancel this Warrant on the surrender hereof
and will  execute and deliver a new Warrant of like tenor for the balance of the
unexercised  Warrant  Shares within such five (5) day period.  If an exercise of
all or part of the Warrants is to be made in connection with a registered public
offering  or a  transaction  described  in  paragraph  10 of this  Warrant,  the
exercise of the Warrants may, at the election of the Holder,  be  conditioned on
the consummation of the public offering or other  transaction under paragraph 10
of this  Warrant.  In that case the exercise  will not be deemed to be effective
until the consummation of the specified condition.

2. Term.  The  Warrants  may be  exercised  in full or in part at any time after
September 30, 2001 and on or before 11:59 p.m. Oklahoma City, Oklahoma, time on,
June 30, 2008 (the "Expiration  Date"). To the extent not exercised prior to the
Expiration Date, the Warrants and all of the rights of the Holder hereunder will
expire  and  terminate  on  such  date  without  any  action  or  notice  by the
Corporation.

3. Exercise Price. On the exercise of the Warrants,  the Holder agrees to pay to
the Corporation  for the Warrant Shares  purchased by the Holder pursuant to the
terms of this Warrant an amount (the "Exercise Price")  multiplied by the number
of Warrant Shares at the time of  determination.  The initial Exercise Price per
Warrant Share is equal to the  Aggregate  Consideration  (as hereafter  defined)
divided  by twelve  million  six  hundred  twelve  thousand  one  hundred  forty
(12,612,140),  but is  subject  to  adjustment  pursuant  to the  terms  of this
Warrant.  In no event will the aggregate  Exercise  Price for all of the Warrant
Shares to be acquired under this Warrant, whether as a result of a change in the
par value of the  Ordinary  Shares or a change in the number of Warrant  Shares,
exceed an amount (the  "Aggregate  Consideration")  equal to Twenty-Two  Million
Five Hundred  Thousand  Dollars  United  States  Dollars  ($22,500,000.00).  The
Exercise  Price may be paid as follows,  at the  election of the Holder:  (a) in
lawful  money of the  United  States of  America;  (b) by the  Holder  crediting
against unpaid interest and principal due and owing under the Note (as hereafter
defined) an amount equal to the Exercise Price;  (c) by the Holder  surrendering
or  assigning  to the  Corporation  the  Warrants  under  this  Warrant  with an
aggregate  Equity Value (as hereafter  defined) equal to the Exercise  Price; or
(d) by the Holder  surrendering or assigning to the Corporation  Ordinary Shares
having a Current  Market  Price (as  hereafter  defined)  equal to the  Exercise
Price.  For  purposes of this  Warrant the term:  (y) "Equity  Value"  means the
difference  between  the Current  Market  Price for one  Ordinary  Share and the
Exercise  Price  for one  Warrant  Share;  and (z)  "Note"  means  that  certain
promissory  note of even date herewith  executed by the  Corporation in favor of
the Holder in the original  principal amount of Twenty-Two  Million Five Hundred
Thousand United States Dollars ($22,500,000.00).

4. Representations,  Warranties and Covenants. The Corporation represents to and
warrants, covenants and agrees with the Holder as follows:

     4.1  Reservation of Shares. At all times while the Warrants are outstanding
          the Corporation will reserve out of the  Corporation's  authorized but
          unissued  Ordinary Shares,  free from preemptive rights and solely for
          the purpose of effecting  the exercise of the  Warrants,  a sufficient
          number of Ordinary  Shares to provide for the exercise of the Warrants
          and all other  options,  warrants and  convertible  securities  of the
          Corporation.  The Corporation will take all such actions  necessary to
          assure that all such Warrant Shares may be issued without violation of
          any applicable  law,  governmental  regulation or  requirements of any
          domestic  securities  exchange or automated  quotation system on which
          the Ordinary  Shares are listed or quoted (except for official  notice
          of issuance,  which will be immediately  delivered by the  Corporation
          upon each such  issuance).  The  Corporation  will take all  necessary
          actions  to assure  that all of the  Warrant  Shares  are  authorized,
          approved  for  and  listed  on any  national  securities  exchange  or
          quotation system on which the Corporation's Ordinary Shares are listed
          or quoted.  The Corporation will not take any action which would cause
          the number of authorized but unissued  Ordinary Shares to be less than
          the number of Ordinary  Shares required to be reserved for issuance on
          exercise of the Warrants.

     4.2  Valid  Issuance.  All Warrant Shares that may be issued on exercise of
          the  Warrants  will  be  duly  and  validly  issued,  fully  paid  and
          nonassessable and free from all taxes, liens, charges and encumbrances
          on  issuance by the  Corporation.  The  Corporation  will not take any
          action or fail to take any action  which will cause a contrary  result
          (including,  without  limitation,  any  action  that  would  cause the
          Exercise  Price then in effect to be less than the par value,  if any,
          of the Ordinary Shares).

     4.3  Cooperation. The Corporation will: (a) not close its books against the
          transfer of the Warrants or of any Warrant  Shares in any manner which
          interferes  with the timely  exercise of the Warrants;  (b) assist and
          cooperate  with the Holder  should the Holder be  required to make any
          governmental filings or obtain any governmental  approvals prior to or
          in connection  with any exercise of the Warrants  (including,  without
          limitation,   making  any   filings   required   to  be  made  by  the
          Corporation).

     4.4  Authority. The Corporation has taken all necessary action to authorize
          the  execution  and  delivery of this  Warrant and the issuance of the
          Warrant  Shares on the  exercise of the  Warrants.  This  Warrant is a
          valid,  binding and enforceable  obligation of the Corporation subject
          to   applicable   bankruptcy,   insolvency,   fraudulent   conveyance,
          moratorium  and similar laws now or  hereafter  in effect  relating to
          creditors' rights and remedies generally. The execution,  delivery and
          performance of this Warrant will not violate: (a) any provision of the
          organizational documents or charter of the Corporation; (b) any order,
          writ,  injunction  or decree of any  court,  administrative  agency or
          governmental  body  applicable  to the  Corporation  or  the  Ordinary
          Shares;  or (c) any contract,  lease,  note,  bond,  mortgage or other
          agreement  to  which  the   Corporation  is  a  party,  by  which  the
          Corporation is bound or to which any of the  Corporation's  assets are
          subject.

     4.5  Capitalization.  As of the  date of this  Warrant:  the  Corporation's
          authorized  capital  stock  consists  of  one  hundred  fifty  million
          (150,000,000) Ordinary Shares and fifty million (50,000,000) shares of
          which may be designated by the board of directors of the  Corporation,
          none of which preferred  shares have been designated or issued.  As of
          the date of this  Warrant the only shares of capital  stock issued and
          outstanding,  reserved for issuance or committed to be issued are: (a)
          thirty-seven  million eight hundred  thirty-six  thousand four hundred
          twenty  (37,836,420)  fully paid and non-  assessable  Ordinary Shares
          duly issued and  outstanding;  (b) twelve  million six hundred  twelve
          thousand one hundred forty  (12,612,140)  Ordinary Shares reserved for
          issuance as a result of the proposed issuance of warrants (the "Series
          A  Warrants")  in  connection  with  the  sale by the  Corporation  of
          Twenty-two million Five Hundred Thousand Dollars  ($22,500,000.00)  of
          12% Senior  Secured  Series A Notes due 2004;  (c) twelve  million six
          hundred twelve thousand one hundred forty (12,612,140) Ordinary Shares
          reserved  for  issuance  on  exercise  of the  Warrants;  and  (d) the
          remaining  unissued Ordinary Shares out of the fifty-one million three
          hundred  fifty-six  thousand eight hundred  eighty-eight  (51,356,888)
          Ordinary   Shares   originally   reserved  for   issuance   under  the
          Corporation's  1995,  1996 and 1997 stock  option  plans.  The Warrant
          Shares  reserved for issuance  represent now less than twenty  percent
          (20%) of the  Corporation's  fully diluted Ordinary Shares which as of
          the date of the  issuance of this  Warrant  includes all of the issued
          and outstanding  Ordinary  Shares,  any Ordinary Shares issuable under
          this  Warrant,  the  maximum  number of  Ordinary  Shares  issuable in
          connection  with the  Series  A  Warrants  and any  other  Options  or
          Convertible  Securities (as hereafter defined) excluding only Ordinary
          Shares  issuable as a result  Options  issued under the  Corporation's
          1995, 1996 and 1997 compensatory stock option plans.

     4.6  Office.  The  Corporation  will  maintain  an office for the  purposes
          specified in this Warrant (the "Warrant  Office").  The Warrant Office
          will initially be the  Corporation's  offices at Suite 1700,  5555 San
          Felipe Houston,  Texas, 77056 and may subsequently be any other office
          of the  Corporation or any transfer  agent for the Ordinary  Shares in
          the  continental   United  States  as  to  which  written  notice  has
          previously been given to the Holder.  The Corporation will maintain at
          the  Warrant   Office  a  register  for  the  Warrants  in  which  the
          Corporation  will  record the name and  address of the person in whose
          name this Warrant has been issued. The Holder will be able to take any
          action   permitted  in  this  Warrant   including,   without   implied
          limitation, the exercise or transfer of the Warrants.

     4.7  Participating  Preferred  Stock. At all times that any of the Warrants
          are  outstanding,  the Corporation will not issue any capital stock or
          shares  of  any  class   preferred  as  to  dividends  or  as  to  the
          distribution  of  assets  on  voluntary  or  involuntary  liquidation,
          dissolution  or winding up: (a) without the prior  written  consent of
          the holders of sixty percent (60%) of the outstanding Warrants; or (b)
          unless such securities are limited to a fixed sum or percentage of par
          value in respect of participation in dividends and distributions.

5. Restrictive Legend. The Warrants are being acquired and any Warrant Shares to
be acquired by the Holder pursuant to this Warrant (collectively,  "Securities")
will be acquired for investment for the Holder's own account and not with a view
to, or for resale in connection with, any distribution of such Securities within
the meaning of the  Securities Act of 1933, as amended (the  "Securities  Act").
The Securities  will not be sold,  transferred or otherwise  disposed of without
registration under the Securities Act and state securities laws or qualification
for exemptions therefrom. The Holder agrees that each certificate evidencing the
Warrant  Shares may be inscribed  with a legend to the foregoing  effect,  which
legend will be as follows:

     THE ORDINARY  SHARES  REPRESENTED  BY THIS  CERTIFICATE  HAVE BEEN ACQUIRED
SOLELY FOR INVESTMENT PURPOSES AND HAVE NOT BEEN REGISTERED UNDER THE SECURITIES
ACT OF 1933, AS AMENDED, OR THE SECURITIES LAWS OF ANY STATE. THE SHARES MAY NOT
BE SOLD,  TRANSFERRED,  ASSIGNED OR OTHERWISE  DISPOSED OF UNLESS AND UNTIL SUCH
SHARES ARE FIRST  REGISTERED  UNDER THE  SECURITIES  ACT OF 1933, ALL APPLICABLE
STATE  SECURITIES LAWS AND ALL RULES AND REGULATIONS  PROMULGATED  THEREUNDER OR
UNLESS AND UNTIL THE HOLDER HEREOF PROVIDES (i) INFORMATION REASONABLY NECESSARY
TO CONFIRM THAT SUCH  REGISTRATION IS NOT REQUIRED OR (ii) AN OPINION OF COUNSEL
TO THE EFFECT THAT SUCH REGISTRATION IS NOT REQUIRED.

The Holder agrees that the  Corporation may place a stop transfer order with the
Corporation's  transfer agent, if any, with respect to any noncomplying transfer
of the certificates  representing any Warrant Shares,  which stop transfer order
will be removed by the Corporation on compliance with the foregoing.

6.  Registration  Rights  Agreement.  The Holder and any other holder of Warrant
Shares  will  have  the  registration   rights  provided  for  in  that  certain
Registration  Rights  Agreement  dated of even date herewith (the  "Registration
Rights Agreement"), between the Corporation and the Holder. The Corporation will
maintain copies of the Registration Rights Agreement available for inspection by
the Holder during normal business hours at its office.

7. Anti-Dilution Adjustments. In order to prevent dilution of the rights granted
with  respect  to the  Warrants,  the  Exercise  Price and the number of Warrant
Shares  obtainable on the exercise of a Warrant are subject to  adjustment  from
time to time as follows:

     7.1  Issuance of Ordinary  Shares.  If and whenever on or after the date of
          this Warrant the  Corporation  issues or sells,  or in accordance with
          paragraph  7.2 of this  Warrant is deemed to have issued or sold,  any
          Ordinary Shares for a  consideration  per share less than the Exercise
          Price in effect  immediately  prior to such time, then  immediately on
          such  issuance or sale the  Exercise  Price will be reduced to the new
          Exercise Price determined by dividing:

         7.1.1 the sum of (a) the product  derived by  multiplying  the Exercise
               Price in effect immediately prior to such issue or sale times the
               number  of  Ordinary  Shares  Deemed  Outstanding  (as  hereafter
               defined)  immediately  prior to such issue or sale,  plus (b) the
               consideration,  if  any,  received  by the  Corporation  on  such
               issuance or sale, divided by

         7.1.2 the number of  Ordinary  Shares  Deemed  Outstanding  immediately
               after such issuance or sale.

     On each such  adjustment  of the Exercise  Price  hereunder,  the number of
Warrant  Shares  acquirable  on  exercise  of a Warrant  will be adjusted to the
number of  shares  obtained  by  dividing  the  Aggregate  Consideration  by the
Exercise Price resulting from the foregoing adjustment.

     7.2  Effect  on  Exercise  Price  of  Certain   Events.   For  purposes  of
          determining  the adjusted  Exercise Price under  paragraph 7.1 of this
          Warrant, the following will be applicable:

         7.2.1 Issuance of Rights or Options.  If the  Corporation in any manner
               grants,  issues or sells any Options (as  hereafter  defined) and
               the price per share for which Ordinary Shares are issuable on the
               exercise of such Options (or on the conversion or exchange of any
               Convertible  Securities  (as hereafter  defined)  issuable on the
               exercise  of such  Options)  is less than the  Exercise  Price in
               effect  immediately  prior to the time of the grant,  issuance or
               sale of such Options,  then the total maximum number of shares of
               Ordinary  Shares  issuable on the exercise of such Options (or on
               the  conversion or exchange of the total  maximum  amount of such
               Convertible  Securities issuable on the exercise of such Options)
               will be deemed to be outstanding and to have been issued and sold
               by the  Corporation  at the time of the  granting or sale of such
               Options for such price per share. For purposes of this paragraph,
               the "price per share for which  Ordinary  Shares are  issuable on
               exercise of such Options or on the  conversion or exchange of any
               Convertible  Securities"  is determined by dividing (a) the total
               amount,  if any,  received or  receivable by the  Corporation  as
               consideration for the granting or sale of such Options,  plus the
               minimum aggregate amount of additional  consideration  payable to
               the Corporation on the exercise of all such Options,  plus in the
               case of such Options which relate to Convertible Securities,  the
               minimum  aggregate  amount of additional  consideration,  if any,
               payable  to the  Corporation  on the  issuance  or  sale  of such
               Convertible Securities and the conversion or exchange thereof, by
               (b) the  total  maximum  number  of  shares  of  Ordinary  Shares
               issuable  on  exercise of such  Options or on the  conversion  or
               exchange  of all  such  Convertible  Securities  issuable  on the
               exercise of such Options.  No further  adjustment of the Exercise
               Price will be made on the actual issuance of such Ordinary Shares
               or of such Convertible Securities on the exercise of such Options
               or on the actual  issuance of Ordinary  Shares as a result of the
               conversion or exchange of such Convertible Securities.

         7.2.2 Issuance of  Convertible  Securities.  If the  Corporation in any
               manner issues or sells any  Convertible  Securities and the price
               per share for which Ordinary Shares are issuable on conversion or
               exchange  thereof  is less  than the  Exercise  Price  in  effect
               immediately  prior  to the time of such  issue or sale,  then the
               maximum  number  of  shares  of  Ordinary   Shares   issuable  on
               conversion  or exchange of such  Convertible  Securities  will be
               deemed to be outstanding  and to have been issued and sold by the
               Corporation at the time of the issue or sale of such  Convertible
               Securities  for such price per share.  For the  purposes  of this
               paragraph,  the  "price per share for which  Ordinary  Shares are
               issuable on  conversion  or exchange  thereof" is  determined  by
               dividing  (a) the total  amount  received  or  receivable  by the
               Corporation  as  consideration  for  the  issue  or  sale of such
               Convertible  Securities,  plus the  minimum  aggregate  amount of
               additional  consideration,  if any, payable to the Corporation on
               the  conversion  or exchange  thereof,  by (b) the total  maximum
               number of shares of Ordinary Shares issuable on the conversion or
               exchange  of  all  such   Convertible   Securities.   No  further
               adjustment of the Exercise Price will be made on the actual issue
               of  such  Ordinary  Shares  on  conversion  or  exchange  of such
               Convertible  Securities,  and if any  such  issue or sale of such
               Convertible  Securities  is made on  exercise  of any Options for
               which  adjustments  of the  Exercise  Price had been or are to be
               made  pursuant  to other  provisions  of this  paragraph  7.2, no
               further  adjustment of the Exercise  Price will be made by reason
               of such issue or sale.

         7.2.3 Change in Option Price or Conversion  Rate. If the purchase price
               provided for in any Options,  the  additional  consideration,  if
               any,  payable  on  the  issue,  conversion  or  exchange  of  any
               Convertible  Securities,  or the  rate at which  any  Convertible
               Securities  are  convertible  into or  exchangeable  for Ordinary
               Shares  changes at any time,  the Exercise Price in effect at the
               time of such change will be adjusted  immediately to the Exercise
               Price  which  would  have  been in  effect  at such time had such
               Options or Convertible  Securities still outstanding provided for
               such changed purchase price, additional  consideration or changed
               conversion  rate,  as the  case  may be,  at the  time  initially
               granted,  issued or sold and the  number  of  shares of  Ordinary
               Shares issuable hereunder will be correspondingly  adjusted.  For
               purposes  of this  paragraph  7.2,  if the terms of any Option or
               Convertible Security which was outstanding as of the date of this
               Warrant are changed in the manner  described  in the  immediately
               preceding sentence,  then such Option or Convertible Security and
               the Ordinary  Shares deemed  issuable on exercise,  conversion or
               exchange  thereof  will be deemed  to have been  issued as of the
               date of such change. Notwithstanding the foregoing no such change
               will  at any  time  cause  the  Exercise  Price  hereunder  to be
               increased.

         7.2.4 Expired Options and  Securities.  On the expiration of any Option
               or the  termination  of any  right to  convert  or  exchange  any
               Convertible  Securities  without  the  exercise of such Option or
               right, the Exercise Price then in effect and the number of shares
               of  Ordinary  Shares   acquirable   hereunder  will  be  adjusted
               immediately  to the Exercise Price and the number of shares which
               would  have  been in  effect  at the time of such  expiration  or
               termination  had such Option or  Convertible  Securities,  to the
               extent  outstanding  immediately  prior  to  such  expiration  or
               termination,  never been issued.  For purposes of this  paragraph
               7.2, the  expiration or  termination of any Option or Convertible
               Security which was outstanding on or before the date of execution
               of this Warrant will not cause the Exercise Price hereunder to be
               adjusted  unless,  and only to the extent  that,  a change in the
               terms of such  Option  or  Convertible  Security  caused it to be
               deemed to have been issued after the date of this Warrant.

         7.2.5 Calculation of  Consideration  Received.  If any Ordinary Shares,
               Options or Convertible Securities are issued or sold or deemed to
               have been  issued or sold for cash,  the  consideration  received
               therefor  will  be  deemed  to be  the  amount  received  by  the
               Corporation  therefor.  In case any Ordinary  Shares,  Options or
               Convertible Securities are issued or sold for consideration other
               than  cash,  the  amount  of the  consideration  other  than cash
               received  by the  Corporation  will  be the  fair  value  of such
               consideration,   except  where  such  consideration  consists  of
               securities, in which case the amount of consideration received by
               the  Corporation  will be the Current  Market Price thereof as of
               the date of  receipt.  In case any  Ordinary  Shares,  Options or
               Convertible   Securities   are   issued  to  the  owners  of  the
               non-surviving  entity in connection  with any merger in which the
               Corporation is the surviving  entity the amount of  consideration
               therefor  will be deemed to be the fair value of such  portion of
               the net assets and  business  of the  non-surviving  entity as is
               attributable  to such  Ordinary  Shares,  Options or  Convertible
               Securities,   as  the  case  may  be.   The  fair  value  of  any
               consideration other than cash or securities will be determined at
               the  reasonable  discretion  of the  board  of  directors  of the
               Corporation  consistent  with the value  assigned  for  generally
               accepted   accounting   principles   for  purposes  of  financial
               reporting.  Notice  of such  determination  will be  given to the
               Holder.  If such  valuation is objected to by the holders of more
               than  twenty-five  percent (25%) of the Warrants  within ten (10)
               days after notice of such  valuation,  then the valuation will be
               determined by a reputable  investment  bank of national  standing
               selected by the holders of a majority of the Warrants, subject to
               the reasonable approval of the Corporation.  The Corporation will
               pay the reasonable expense of such valuation.

         7.2.6 Integrated  Transactions.  In  case  any  Option  or  Convertible
               Security is issued in connection  with the issue or sale of other
               securities of the Corporation, together comprising one integrated
               transaction  in which no specific  consideration  is allocated to
               such Options or Convertible  Security by the parties thereto, the
               Options  or  Convertible  Security  will be  deemed  to have been
               issued for consideration  determined at the reasonable discretion
               of the board of directors of the Corporation  consistent with the
               value  assigned  for purposes of  generally  accepted  accounting
               principles.  Notice  of such  determination  will be given to the
               Holder.  If such  determination  is objected to by the holders of
               more than  twenty-five  percent (25%) of the Warrants  within ten
               (10)  days  after   notice  of  such   determination,   then  the
               determination  will  be made by a  reputable  investment  bank of
               national  standing  selected  by the holders of a majority of the
               Warrants,  subject to the reasonable approval of the Corporation.
               The  Corporation   will  pay  the  reasonable   expense  of  such
               determination.

         7.2.7 Treasury  Shares.   The  number  of  shares  of  Ordinary  Shares
               outstanding  at any given time will not include  Ordinary  Shares
               owned or held by or for the  account  of the  Corporation  or any
               subsidiary,  and any  issuance  or  disposition  of any  Ordinary
               Shares so owned or held will be considered an issuance or sale of
               Ordinary Shares.

         7.2.8 Record Date. If the Corporation  takes a record of the holders of
               Ordinary  Shares for the purpose of entitling them (a) to receive
               a dividend  or other  distribution  payable in  Ordinary  Shares,
               Options or in  Convertible  Securities or (b) to subscribe for or
               purchase Ordinary Shares, Options or Convertible Securities, then
               such  record  date  will be deemed to be the date of the issue or
               sale of the shares of Ordinary  Shares deemed to have been issued
               or sold on the declaration of such dividend or the making of such
               other  distribution  or the date of the granting of such right of
               subscription or purchase, as the case may be.

     7.3  Stock Splits and Reverse Splits.  In the event that the Corporation at
          any time after the date of this  Warrant  subdivides  its  outstanding
          shares of Ordinary  Shares  into a greater  number of shares (by stock
          split, stock dividend,  recapitalization  or otherwise),  the Exercise
          Price  in  effect  immediately  prior  to  such  subdivision  will  be
          proportionately  reduced and the number of Warrant Shares  purchasable
          on the exercise of the Warrants  immediately prior to such subdivision
          will be proportionately  increased.  Conversely, in the event that the
          outstanding  shares of Ordinary Shares at any time are combined into a
          smaller  number of shares (by reverse stock split or  otherwise),  the
          Exercise Price in effect immediately prior to such combination will be
          proportionately increased and the number of Warrant Shares purchasable
          on the exercise of the Warrants  immediately prior to such combination
          will be proportionately reduced.

     7.4  Certain  Events.  If any event occurs of the type  contemplated by the
          provisions of this paragraph 7 but not expressly  provided for by such
          provisions  (including,  without  limitation,  the  granting  of stock
          appreciation rights,  phantom stock rights or other rights with equity
          features),  then the  Corporation's  board of  directors  will make an
          appropriate  adjustment in the Exercise Price and the number of shares
          of  Ordinary  Shares  obtainable  on  exercise  the  Warrants so as to
          protect  the rights of the  holders of the  Warrants.  Notwithstanding
          anything herein to the contrary,  no such adjustment will increase the
          Exercise Price or decrease the number of shares of Ordinary  Shares as
          otherwise determined pursuant to this paragraph 7.

     7.5  Notice of  Adjustment.  Whenever the  Exercise  Price or the number of
          Warrant  Shares  issuable  on the  exercise  of the  Warrants  will be
          adjusted as herein  provided,  or the rights of the Holder hereof will
          change by reason of other events  specified  herein,  the  Corporation
          will compute the adjusted  Exercise  Price and the adjusted  number of
          Warrant  Shares in  accordance  with the  provisions  hereof  and will
          prepare an Officer's  Certificate  setting forth the adjusted Exercise
          Price  and the  adjusted  number of  Warrant  Shares  issuable  on the
          exercise of the  Warrants  or  specifying  the other  shares of stock,
          securities or assets  receivable as a result of such change in rights,
          and showing in reasonable  detail the facts and  calculations on which
          such  adjustments  or other changes are based.  The  Corporation  will
          promptly  cause to be mailed to the  Holder  copies of such  Officer's
          Certificate together with a notice stating that the Exercise Price and
          the number of Warrant  Shares  purchasable on exercise of the Warrants
          have been adjusted and setting forth the adjusted  Exercise  Price and
          the adjusted  number of Warrant Shares  purchasable on the exercise of
          the Warrants.

     7.6  Dividends.  If the Corporation declares or pays a dividend on Ordinary
          Shares  payable  other than in cash out of earnings or earned  surplus
          (determined   in  accordance   with  generally   accepted   accounting
          principles,  consistently  applied),  then the Corporation will pay to
          the Holder at the time of payment  thereof the amount or assets  which
          would have been paid to the Holder had all of the Warrants  been fully
          exercised  immediately  prior to the date on which a record  was taken
          for such dividend, or, if no record is taken, the date as of which the
          record  holders of  Ordinary  Shares  entitled to such  dividends  are
          determined.

     7.7  Exceptions to Anti-Dilution  Adjustment.  Notwithstanding  anything to
          the contrary contained in this Warrant, there will be no adjustment in
          the  Exercise  Price or the number of  Warrant  Shares  obtainable  on
          exercise  of the  Warrants  as a  consequence  of the  issuance by the
          Corporation of: (a) any option, warrant, convertible security or other
          right to acquire  Ordinary  Shares  outstanding or in effect as of the
          date of this Warrant and not amended  after the date of this  Warrant;
          (b) any options,  stock purchase  rights or other rights to acquire up
          to  five  million  three  hundred  fifty-six  thousand  eight  hundred
          eighty-eight  (5,356,888) shares of Ordinary Shares of the Corporation
          on  exercise  of  options  granted  or that may be  granted  under the
          Corporation's  compensatory  1995, 1996 and 1997 stock option plans at
          an exercise price no less than the current market price on the date of
          issuance;  (c) up to twelve  million six hundred  twelve  thousand one
          hundred  forty  (12,612,140)  of the Series A Warrants to be issued in
          connection  with the issuance of the Note by the  Corporation;  or (d)
          the issuance of Ordinary  Shares as a result of the exercise of any of
          the  foregoing.  The  number  of  Ordinary  Shares  exempted  from the
          anti-dilution  adjustments  under foregoing clause (b) assumes that no
          such Options have been  exercised  and as a result will be reduced for
          any Options issued under the  Corporation's  1995, 1996 and 1997 stock
          option plans which were exercised prior to the date of this Warrant.

     7.8  Definitions.  For  purposes of this Warrant the  following  terms will
          have the designated meanings: (a) "Ordinary Shares Deemed Outstanding"
          means at any given  time,  the  number  of  Ordinary  Shares  actually
          outstanding at such time, plus the number of Ordinary Shares deemed to
          be  outstanding  pursuant to paragraph 7 hereof  regardless of whether
          the Options or Convertible Securities are actually exercisable at such
          time;  (b)  "Convertible  Securities"  means any  stock or  securities
          (directly or indirectly) convertible into or exchangeable for Ordinary
          Shares; and (c) "Options" means any rights or options to subscribe for
          or purchase Ordinary Shares or Convertible Securities.

     7.9  Current Market Price. For purposes of this Warrant the "Current Market
          Price"  means:  (a) with  respect to a security  which is traded on an
          organized   national   exchange   or  market  for  which  sales  price
          information for the last transaction is updated contemporaneously, the
          average closing prices of the security on the stock exchange or market
          where the  security is traded or the average last bid prices as quoted
          on the  applicable  exchange or market for the  immediately  preceding
          five (5) trading  days;  and (b) if the security is not traded on such
          an organized  exchange or market,  the price per share of the security
          as  determined in good faith by the  Corporation's  board of directors
          and set forth in a notice of such  valuation  to the  Holder.  If such
          determination  is objected to by the holders of more than  twenty-five
          percent  (25%) of the  Warrants  within ten (10) days after  notice of
          such determination, then the determination will be made by a reputable
          investment  bank of  national  standing  selected  by the holders of a
          majority  of  the  Warrants  subject  to  reasonable  approval  by the
          Corporation.  The Corporation will pay the reasonable  expense of such
          determination.

8. Purchase Rights. If at any time the Corporation  grants,  issues or sells any
Options,   Convertible   Securities  or  rights  to  purchase  stock,  warrants,
securities or other property pro rata to the record holders of Ordinary  Shares,
then,  in  substitution  of  pre-emptive  rights  under the  shareholder  rights
agreement of even date herewith,  the Holder may elect to acquire,  on the terms
applicable to such purchase  rights,  the  aggregate  purchase  rights which the
Holder  could  have  acquired  if the  Holder  had held the  number of shares of
Ordinary  Shares  acquirable  on complete  exercise of the Warrants  immediately
before  the date on which a record is taken for the grant,  issuance  or sale of
such purchase  rights,  or, if no such record is taken, the date as of which the
record holders of Ordinary  Shares are to be determined for the grant,  issue or
sale of such purchase  rights.  The rights under this  paragraph 8 will: (a) not
apply to the rights  offering for the Series A Notes;  and (b)  terminate on the
transfer of this Warrant by the Holder to an unaffiliated third party.

9. Reorganizations and Asset Sales. If any  recapitalization,  reorganization or
reclassification of the capital stock of the Corporation,  or any consolidation,
merger or share exchange of the Corporation  with another  person,  or the sale,
transfer  or other  disposition  of all or  substantially  all of its  assets to
another  person will be effected in such a way that a holder of Ordinary  Shares
of the  Corporation  will be entitled to receive  capital  stock,  securities or
assets with  respect to or in exchange for shares of Ordinary  Shares,  then the
following provisions will apply:

     9.1  Replacement  Instrument.  As a  condition  of  such  recapitalization,
          reorganization,   reclassification,   consolidation,   merger,   share
          exchange,  sale,  transfer or other  disposition  (except as otherwise
          provided  below in paragraph  9.2) lawful and adequate  provisions  in
          form  and  substance  reasonably  satisfactory  to  the  holders  of a
          majority of the Warrants  will be made whereby the holders of Warrants
          will  thereafter  have the right to purchase  and receive on the terms
          and conditions specified in this Warrant and in lieu of or addition to
          (as the  case  may  be) the  Warrant  Shares  immediately  theretofore
          receivable  on the  exercise of the rights  represented  hereby,  such
          shares  of  capital  stock,  securities  or assets as may be issued or
          payable  with  respect to or in exchange  for a number of  outstanding
          shares of such Ordinary  Shares equal to the number of Warrant  Shares
          immediately  theretofore  so  receivable  had  such  recapitalization,
          reorganization,   reclassification,   consolidation,   merger,   share
          exchange  or sale  not  taken  place.  In any  such  case  appropriate
          provision  (in  form  and  substance  reasonably  satisfactory  to the
          holders of majority of the Warrants)  will be made with respect to the
          rights and  interests  of the holders of the  Warrants to the end that
          the provisions hereof (including,  without limitation,  in the case of
          any such  consolidation,  merger or sale in which the successor entity
          or  purchasing  entity is other  than the  Corporation,  an  immediate
          adjustment of the Exercise Price to the value for the Ordinary  Shares
          reflected by the terms of such  consolidation,  merger or sale,  and a
          corresponding immediate adjustment in the number of shares of Ordinary
          Shares  acquirable and receivable on exercise of the Warrants,  if the
          value  so  reflected  is  less  than  the  Exercise  Price  in  effect
          immediately  prior  to  such  consolidation,   merger  or  sale)  will
          thereafter be  applicable,  as nearly as possible,  in relation to any
          shares of capital stock,  securities or assets thereafter  deliverable
          on the exercise of the Warrants.

     9.2  Assumption.  The Corporation  will not effect any such  consolidation,
          merger,  share exchange,  sale,  transfer or other disposition  unless
          prior to or simultaneously with the consummation thereof the successor
          person  (if  other   than  the   Corporation)   resulting   from  such
          consolidation,  share  exchange or merger or the person  purchasing or
          otherwise   acquiring   such  assets  will  have  assumed  by  written
          instrument  executed and mailed or  delivered to the Holder  hereof at
          the  last  address  of  the  Holder  appearing  on  the  books  of the
          Corporation,  (a) the  obligation to deliver to the Holder such shares
          of capital  stock,  securities  or assets as, in  accordance  with the
          foregoing  provisions,  the Holder may be entitled to receive, and (b)
          all other  liabilities and  obligations of the Corporation  hereunder.
          The foregoing will be performed by issuing a new warrant  identical to
          the terms of this Warrant revised to reflect the new parties  thereto,
          a provision  indicating the replacement  nature of the new warrant and
          any  modifications  in Exercise Price and number of shares of stock or
          equity  interests  obtainable  on the  exercise  of the new warrant as
          provided herein.

10. Notices to Holder. If at any time the Corporation proposes to:

     10.1 to declare any  dividend  on its  Ordinary  Shares  payable in capital
          stock  or make any  dividend  or other  distribution  (including  cash
          dividends) to the holders of the Ordinary Shares;

     10.2 to  offer  for  subscription  pro  rata to all of the  holders  of the
          Ordinary Shares any additional shares of capital stock of any class or
          other rights other than the Series A Notes or Series A Warrants;

     10.3 to effect  any  capital  reorganization,  or  reclassification  of the
          capital stock of the Corporation,  or  consolidation,  merger or share
          exchange of the Corporation with another person, or sale,  transfer or
          other disposition of all or substantially all of its assets; or

     10.4 to effect a  voluntary  or  involuntary  dissolution,  liquidation  or
          winding up of the Corporation,

     then, as a condition to taking any one or more of the foregoing actions and
     in addition to any other  obligation  under this Warrant,  the  Corporation
     will give the Holder:  (a) at least  thirty (30) days (but not more than 90
     days)  prior  written  notice  of  the  date  on  which  the  books  of the
     Corporation  will  close or a  record  will be  taken  for  such  dividend,
     distribution  or subscription  rights or for determining  rights to vote in
     respect    of    such    issuance,    recapitalization,     reorganization,
     reclassification,  consolidation,  merger, share exchange,  sale, transfer,
     disposition, dissolution, liquidation or winding up, and (b) in the case of
     any  such  issuance,  recapitalization,  reorganization,  reclassification,
     consolidation,   merger,  share  exchange,  sale,  transfer,   disposition,
     dissolution,  liquidation or winding up, at least thirty (30) days (but not
     more than 90 days) prior written notice of the date when the same will take
     place. Any notice under foregoing clause (a) will specify the date on which
     the  holders of Ordinary  Shares  will be  entitled  to any such  dividend,
     distribution or subscription  rights, and any notice under foregoing clause
     (b) will  specify the date on which the holders of Ordinary  Shares will be
     entitled  to  exchange  their  Ordinary  Shares,  as the case  may be,  for
     securities  or  other   property   deliverable   on  such   reorganization,
     reclassification,  consolidation,  merger, share exchange,  sale, transfer,
     disposition, dissolution, liquidation or winding up.

11. Fractional  Shares.  Fractional shares will not be issued on the exercise of
the Warrants. If the Holder would be entitled to receive a fractional share, the
Corporation  will pay to the  Holder an  amount  equal to the  fractional  share
multiplied by the Current Market Price for one share of Ordinary Shares less the
Exercise Price.

12.  Fully Paid Stock;  Taxes.  The  Corporation  covenants  and agrees that the
shares of stock  represented  by each and  every  certificate  for its  Ordinary
Shares to be delivered on the exercise of the Warrants will be duly  authorized,
validly  issued and  outstanding,  fully paid,  nonassessable  and free from all
taxes, liens,  charges and encumbrances.  The Corporation agrees to pay when due
and payable any and all federal and state taxes (including,  without limitation,
all  documentary,  stamp,  transfer or other  transactional  taxes but excluding
income  taxes)  which may be payable in respect  of the  Warrants,  any  Warrant
Shares or certificates therefor on the exercise of the Warrants.

13. Notices.  Any notice,  demand or  communication  required or permitted to be
given by any  provision of this Warrant will be in writing and will be deemed to
have been given and received when delivered  personally or by  telefacsimile  to
the party  designated to receive such notice,  or on the date  following the day
sent by overnight courier,  or on the third (3rd) business day after the same is
sent by certified mail,  postage and charges prepaid,  directed to the following
addresses or to such other or  additional  addresses in the  continental  United
States of America as any party might  designate  by written  notice to the other
parties:

         To the Corporation:                Mr. Robert Hefner III
                                            Chief Executive Officer
                                            Seven Seas Petroleum, Inc.
                                            Suite 1700, 5555 San Felipe
                                            Houston, Texas 77056
                                            Phone: (713) 622-8218
                                            Fax: (713) 621-9770

         To the Holder:                     Mr. Aubrey K. McClendon
                                            Chief Executive Officer
                                            Chesapeake Energy Corporation
                                            6100 North Western
                                            Oklahoma City, Oklahoma 73118
                                            Phone: (405) 879-9226
                                            Facsimile: (405) 848-8858

14.  Assignment.  Subject to conditions  set forth herein,  this Warrant and all
rights  hereunder  are  transferable,  in whole or in part,  on the books of the
Corporation to be maintained  for such purpose,  on surrender of this Warrant at
the office of the  Corporation  maintained  for such  purpose,  together  with a
written  assignment  of this Warrant duly  executed by the Holder and payment of
funds  sufficient to pay any stock  transfer taxes payable on the making of such
transfer.  On such  surrender  and payment,  the  Corporation  will,  subject to
conditions  set forth  herein,  execute and deliver a new Warrant or Warrants in
the name of the assignee or assignees and in the denominations specified in such
instrument  of  assignment,  and this  Warrant will  promptly be  canceled.  The
conditions to  transferability  specified in this Warrant are intended to ensure
compliance  with the  provisions  of the  Securities  Act and  applicable  state
securities  laws in respect of the transfer of any Warrant or any Warrant Shares
and are to be strictly construed.

15.  Governing  Law.  This  Warrant is being  delivered  and is  intended  to be
performed in Oklahoma and will be construed and enforced in accordance with, and
the rights of the parties will be governed by, the law of such state.

16. Agent Appointment; Jurisdiction. The Corporation hereby irrevocably appoints
CT Corporation,  located in Oklahoma City, Oklahoma, or such other person as may
be designated by the Corporation and approved by the Holder, in writing,  as the
Corporation's  agent (the "Service Agent") for the purpose of accepting  notices
and  service of process so long as the Holder  owns any of the  Warrants  or the
Warrant Shares.  Any notice or service of process delivered to the Service Agent
will be deemed to be served on the Corporation for purposes of this Warrant. THE
CORPORATION HEREBY IRREVOCABLY  SUBMITS ITSELF TO THE EXCLUSIVE  JURISDICTION OF
THE STATE AND FEDERAL  COURTS  SITTING IN THE STATE OF  OKLAHOMA  AND AGREES AND
CONSENTS  THAT SERVICE OF PROCESS MAY BE MADE ON THE  CORPORATION  BY SERVICE ON
THE SERVICE AGENT IN ANY LEGAL PROCEEDING  RELATING TO THIS WARRANT BY ANY MEANS
ALLOWED UNDER OKLAHOMA OR FEDERAL LAW. ANY LEGAL PROCEEDING ARISING OUT OF OR IN
ANY WAY RELATED TO THIS WARRANT WILL BE BROUGHT AND LITIGATED EXCLUSIVELY IN THE
UNITED STATES DISTRICT COURT FOR THE WESTERN DISTRICT OF OKLAHOMA, TO THE EXTENT
IT HAS SUBJECT MATTER JURISDICTION, AND OTHERWISE IN THE OKLAHOMA DISTRICT COURT
SITTING IN OKLAHOMA COUNTY,  OKLAHOMA. THE PARTIES HERETO HEREBY WAIVE AND AGREE
NOT TO  ASSERT,  BY WAY OF  MOTION,  AS A DEFENSE  OR  OTHERWISE,  THAT ANY SUCH
PROCEEDING  IS BROUGHT  IN AN  INCONVENIENT  FORUM OR THAT THE VENUE  THEREOF IS
IMPROPER,  AND FURTHER  AGREE TO A TRANSFER OF ANY SUCH  PROCEEDING TO A FEDERAL
COURT  SITTING IN  OKLAHOMA  CITY,  OKLAHOMA,  TO THE EXTENT THAT IT HAS SUBJECT
MATTER  JURISDICTION,  AND  OTHERWISE  TO A  STATE  COURT  IN  OKLAHOMA  COUNTY,
OKLAHOMA.  IN FURTHERANCE  THEREOF,  THE  CORPORATION AND THE HOLDER EACH HEREBY
ACKNOWLEDGE  AND AGREE THAT IT WAS NOT  INCONVENIENT  FOR THEM TO NEGOTIATE  AND
ENTER INTO THE  TRANSACTIONS  CONTEMPLATED  BY THIS WARRANT IN OKLAHOMA  COUNTY,
OKLAHOMA  AND THAT IT WILL BE NEITHER  INCONVENIENT  NOR UNFAIR TO  LITIGATE  OR
OTHERWISE  RESOLVE ANY DISPUTES OR CLAIMS IN A COURT SITTING IN OKLAHOMA COUNTY,
OKLAHOMA.

17.  Headings.  The headings of the  paragraphs of this Warrant are inserted for
convenience only and will not be deemed to constitute a part of this Warrant.

18.  Lost,  Stolen,  Destroyed  or  Mutilated  Warrant.  In case this Warrant is
mutilated,  lost,  stolen or destroyed,  the  Corporation  agrees to issue a new
Warrant of like date,  tenor and  denomination  and deliver the same in exchange
and  substitution  for and on  surrender  and  cancellation  of  this  mutilated
Warrant, or in lieu of this Warrant being lost, stolen or destroyed,  on receipt
of evidence  reasonably  satisfactory to the  Corporation of the loss,  theft or
destruction  of this  Warrant and on receipt of  indemnity  satisfactory  to the
Corporation  (provided that in the case of Chesapeake  Energy  Corporation,  any
affiliate of Chesapeake  Energy  Corporation or an institutional  investor,  the
investor's own agreement will be deemed satisfactory to the Corporation).

19. Fees and  Expenses.  The  Corporation  agrees to pay on demand all costs and
expenses  (including  attorney's  fees and costs) incurred by the Holder arising
out of or in connection with the administration,  enforcement or preservation of
any rights under this Warrant including,  without limitation, the enforcement of
this Warrant by judicial  proceedings,  proceedings under Chapter 7 or 11 of the
Bankruptcy Code or any successor statute thereto, or otherwise.

20.  Consent to  Amendments;  Waivers.  The  provisions  of this  Warrant may be
amended or waived at any time only by the written  agreement of the  Corporation
and the Holder. Any waiver, permit, consent or approval of any kind or character
on the part of the Holder of any  provisions  or conditions of this Warrant must
be made in writing and will be  effective  only to the extent  specifically  set
forth in such  writing.  No course of dealing  between the  Corporation  and the
Holder and no delay in exercising any right,  remedy,  or power conferred hereby
or now or hereafter  existing at law or under  equity,  by statute or otherwise,
will  operate as a waiver of or  otherwise  prejudice  any such right,  power or
remedy.

21. Warrant Holder Not  Shareholder.  This Warrant does not confer on the Holder
hereof any right to vote or to consent as a shareholder of the  Corporation,  as
such, in respect of any matters  whatsoever,  or any other rights or liabilities
as a shareholder, prior to the exercise hereof as hereinbefore provided.

22.  Severability.  Should any part of this  Warrant  for any reason be declared
invalid,  such decision  will not affect the validity of any remaining  portion,
which remaining  portion will remain in full force and effect as if this Warrant
had been executed with the invalid portion thereof eliminated,  and it is hereby
declared the  intention of the parties  hereto that they would have executed and
accepted the remaining  portion of this Warrant  without  including  therein any
such part,  parts or portion  which may, for any reason,  be hereafter  declared
invalid.

     IN WITNESS WHEREOF,  this Warrant has been executed  effective the ____ day
of ____, 2001.

                   SEVEN SEAS PETROLEUM, INC., a Cayman Island
                   exempted company limited by shares


                   By________________________________________
                   Name________________________________________
                   Title ________________________________________

                                                             (the "Corporation")

                   CHESAPEAKE ENERGY CORPORATION, an
                   Oklahoma corporation


                   By________________________________________
                   Name________________________________________
                   Title________________________________________

                                                                  (the "Holder")

                                  Exhibit "D"

                            Seven Seas Petroleum Inc.

                         Shareholder's Rights Agreement


     THIS  SHAREHOLDER'S  RIGHTS  AGREEMENT  has been made and entered into this
____  day of  ________,  2001,  by and  between  Chesapeake  Energy  Corporation
("Chesapeake"),  an Oklahoma corporation,  and Seven Seas Petroleum Inc. ("Seven
Seas" or the "Company"),  a Cayman Islands  exempted  company limited by shares,
with reference to the following circumstances:

     A.  Chesapeake  and Seven Seas have entered  into a Note  Purchase and Loan
Agreement  (the "Purchase  Agreement")  contemporaneously  herewith  pursuant to
which  Chesapeake will purchase  $22,500,000 of principal  amount Senior Secured
Notes (the "Notes") of Seven Seas and  12,612,139  Warrants to purchase an equal
number of the Company's  voting ordinary  shares.  Unless  otherwise  defined or
required by context, words defined in the Purchase Agreement shall have the same
meaning herein.

     B.  As a condition  to Chesapeake's  obligation  to purchase  the Notes and
Warrants,  Seven  Seas  agreed  to  provide  Chesapeake,  under  the  terms  and
conditions  of this  Agreement,  the right to (i) designate up to two persons to
serve on Seven Seas board of directors and (ii)  participate in future offerings
by Seven Seas.

     ACCORDINGLY,  premises  considered,  the  parties  have  entered  into this
agreement.

     1. Chesapeake's Designation of Directors. In the event Chesapeake elects to
do so in  writing,  at any time  from and  after  the  Closing  Date  until  the
termination  of this  Agreement,  , the Board of the  Company  will  appoint  in
accordance  with its procedures for the  appointment of directors as provided in
its  Articles  of  Association  ("By-laws")  and  applicable  law,  two  persons
designated by Chesapeake who are senior executives of Chesapeake and one of whom
is its chief  executive  officer (all such persons who, at any time, are or were
designated by Chesapeake  for purposes of this  agreement are referred to herein
as "Chesapeake Designees").  Chesapeake shall designate the Chesapeake Designees
by written notice to the Company.  After appointment of the Chesapeake Designees
as  provided  herein,  at each  subsequent  annual or  special  meeting  for the
election of directors of the Company,  the Company will nominate the  Chesapeake
Designees in accordance with its By-laws. The Chesapeake Designees will receive,
at the expense of the Company,  the same expense  reimbursement  with respect to
their  services as directors  of the Company as other  directors of the Company.
Upon  termination  of this  Agreement in accordance  with its terms,  Chesapeake
shall cause all Chesapeake  Designees then serving as directors of Seven Seas to
resign immediately. In the event any Chesapeake Designee shall cease to serve as
a director  for any reason other than the  termination  of this  Agreement,  the
vacancy  resulting  thereby  shall be filled by the  remaining  directors of the
Company in accordance  with its By-laws and  applicable  law by a new Chesapeake
Designee  who shall  thereafter  serve until the  expiration  of the term of the
Chesapeake  Designee  replaced by the new Chesapeake  Designee.  Notwithstanding
anything to the  contrary  contained  herein,  no  Chesapeake  Designee may be a
person who previously has been a director of Seven Seas and was properly removed
for cause from the board of  directors  of the  Company or a person who has been
convicted of a felony or a crime involving moral turpitude.  At all times during
the term of this Agreement  during which no Chesapeake  Designees are serving on
the  Company's   Board,   Chesapeake  will  have  the  right  to  designate  one
representative  of Chesapeake to attend and observe all meetings of the board of
directors  of the  Company  and  each of the  Subsidiaries  and  all  committees
thereof.  The Company will provide such designated observer with all notices and
materials  provided to the board or  committee  members at the same time as such
notices and materials are provided to the  directors or committee  members.  The
Company will  promptly pay or reimburse  each such  designated  observer for all
reasonable out-of-pocket expenses incurred in connection with attending board or
committee  meetings of the Company or any  Subsidiary.  The Company will not and
will not permit any of the Subsidiaries to take any board or committee action by
written consent without ten (10) days prior written notice to Chesapeake.

     2. Right to Participate in Certain Securities Issuances by Seven Seas.

          (a)  Definitions.  As used herein,  the following terms shall have the
     meanings indicated:

          "New  Securities"  shall  mean any (i)  Capital  Stock,  (ii)  debt or
     security convertible into Capital Stock and (iii) option,  warrant or right
     to acquire Capital Stock of the Company, whether or not attached to another
     security,  except  New  Securities  shall not  include  (a)  shares  issued
     pursuant to the exercise of the Warrants,  (b)  compensatory  stock options
     and shares issued pursuant to the exercise of compensatory  options granted
     under  existing  stock  option  plans  of  the  Company   approved  by  its
     shareholders,  (c) the Warrants, the Short Term Secured Notes or the Senior
     Secured  Notes or any  securities  issued in exchange  therefor,  including
     warrants  issued  pursuant  to  the  rights  offering  contemplated  by the
     Purchase  Agreement,  (d) shares of Capital Stock issued in connection with
     any stock split,  stock dividend or  recapitalization  by the Company,  (e)
     shares of Capital Stock issued in connection with a merger,  consolidation,
     combination,  share  exchange  or other  acquisition  pursuant to which the
     Company  acquires  another  entity , (f) shares of Capital  Stock issued in
     connection  with the  acquisition  of assets by the Company,  (g) shares of
     Capital Stock issued in connection  with the retirement of Company debt and
     (h) shares of Capital Stock issued  pursuant to a  reorganization  with the
     principal purpose of changing the Company's domicile. At any time the Notes
     are  outstanding,  the  exclusions  from the  definition of New  Securities
     contained  in  clauses  (e),  (f) and (g) above  will not apply  unless the
     transaction is consummated in compliance with the Purchase Agreement.

          "Capital  Stock" shall mean any class of capital shares  authorized to
     be issued by the  Company  under its  Memorandum  of  Association  or other
     charter documents.

          "Short Term Secured Notes" shall mean those certain secured promissory
     notes in the aggregate  principal amount of $22,500,000 issued to Robert A.
     Hefner  III and  other  investors  contemporaneously  with  the sale by the
     Company  to  Chesapeake  of  $22,500,000  Senior  Secured  Notes  under the
     Purchase Agreement.

          "Senior Secured Notes" shall mean Seven Seas' 12% Senior Secured Notes
     due 2004 issued to  Chesapeake  by Seven Seas under the Purchase  Agreement
     and  proposed  to be  issued  in  connection  with a rights  offering  , as
     described in the Purchase Agreement.

          "Public  Offering"  shall mean a firm commitment  underwritten  public
     offering  pursuant  to a  registration  statement  which has been  declared
     effective by the United States Securities and Exchange Commission under the
     Securities Act of 1933, as amended, or any successor federal statute, as in
     effect from time to time.

          (b)  Issues  of New  Securities.  Seven  Seas  shall not issue any New
     Securities  unless it shall have  first  complied  with,  in the case of an
     issuance  other than  pursuant  to a Public  Offering,  the  provisions  of
     Section  2 (c) or,  in the case of a Public  Offering,  the  provisions  of
     Section 2 (d).

          (c) Issues Not Involving a Public  Offering.  If Seven Seas determines
     to issue New Securities  other than in a Public  Offering,  then Seven Seas
     shall provide  written notice of such  determination  to Chesapeake,  which
     notice  shall  include all of the terms of the  issuance and shall offer to
     Chesapeake  the right to purchase up to 20% of the New  Securities,  at the
     same price and under the same terms as Seven Seas proposes to issue the New
     Securities  to others (the "Offer  Notice").  If  Chesapeake  determines to
     accept the offer contained in the Offer Notice,  Chesapeake shall deliver a
     written notice to the Company  indicating  its  acceptance  within ten (10)
     days after its receipt of the Offer  Notice,  which notice  shall  indicate
     whether  Chesapeake  has  accepted  the  offer in whole or in part,  and if
     accepted in part, the number or amount of New  Securities  (which shall not
     be less  than 5% of the New  Securities)  as to which  such  offer has been
     accepted (an "Acceptance Notice"). Any acceptance of the offer contained in
     the Offer Notice by delivery of an Acceptance Notice shall, on consummation
     of the issuance of the New Securities in accordance  with the Offer Notice,
     be irrevocable and shall  constitute a commitment by Chesapeake to purchase
     from the  Company and by the  Company to sell to  Chesapeake  the number or
     amount of New Securities  covered by such Acceptance  Notice upon the terms
     contained  in the Offer  Notice.  In the  event  any of the New  Securities
     covered by the Offer Notice are sold on different  terms,  the Company will
     provide a new Offer  Notice  under this  paragraph  and the  initial  Offer
     Notice will be superceded thereby.

          (d) Issues  Involving a Public  Offering.  If the Company  proposes to
     issue any New  Securities in a Public  Offering,  the Company shall provide
     written notice of such  determination  to Chesapeake no later than the time
     that the Company  commences  the process to make the Public  Offering.  The
     notice shall include the proposed size and other terms of such issuance, to
     the extent then known,  the name or names of the managing  underwriter  for
     the  proposed  Public  Offering,  if then  known,  and the date  when it is
     proposed that the Public Offering will be made. The Company shall cause the
     underwriters of the Public Offering to offer to Chesapeake, subject to such
     conditions  as the  underwriters  may  reasonably  require,  the  right  to
     purchase  from the  underwriters  of the  Public  Offering,  at the  Public
     Offering  price set forth on the cover page of the prospectus or prospectus
     supplement for the Public Offering, 5% of the New Securities proposed to be
     issued.

     3.  Representations and Warranties of Seven Seas. Seven Seas represents and
warrants to  Chesapeake  that (i) Seven Seas is an exempted  company  limited by
shares (as defined in The Companies Law (2000  Revision) of the Cayman  Islands)
duly  organized,  validly  existing and in good  standing  under the laws of the
Cayman  Islands and has the  corporate  power and  authority  to enter into this
agreement  and to carry out its  obligations  hereunder,  (ii) the execution and
delivery of this agreement by Seven Seas and the  consummation by the Company of
the transactions  contemplated hereby have been duly authorized by all necessary
corporate action on the part of Seven Seas and no other corporate proceedings on
the part of the Company are necessary to authorize  this agreement or any of the
transactions  contemplated  hereby,  and  (iii)  this  agreement  has been  duly
executed  and  delivered  by Seven  Seas and  constitutes  a valid  and  binding
obligation of the Company and,  assuming this agreement  constitutes a valid and
binding  obligation  of  Chesapeake,   is  enforceable  against  Seven  Seas  in
accordance  with its terms,  subject to applicable  bankruptcy,  reorganization,
insolvency,   moratorium,  fraudulent  conveyance  and  similar  laws  affecting
creditors'  rights  generally  from time to time and to  general  principles  of
equity.

     4. Representations and Warranties of Chesapeake.  Chesapeake represents and
warrants to Seven Seas that (i)  Chesapeake  is a  corporation  duly  organized,
validly  existing and in good  standing  under the laws of the State of Oklahoma
and has the corporate  power and  authority to enter into this  agreement and to
carry out its  obligations  hereunder,  (ii) the  execution and delivery of this
agreement by Chesapeake and the  consummation by Chesapeake of the  transactions
contemplated  hereby have been duly authorized by all necessary corporate action
on the part of  Chesapeake  and no other  corporate  proceedings  on the part of
Chesapeake are necessary to authorize this agreement or any of the  transactions
contemplated  hereby,  and  (iii)  this  agreement  has been duly  executed  and
delivered  by  Chesapeake  and  constitutes  a valid and binding  obligation  of
Chesapeake,  and,  assuming  this  agreement  constitutes  a valid  and  binding
obligation of Seven Seas,  enforceable against Chesapeake in accordance with its
terms, subject to applicable bankruptcy, reorganization, insolvency, moratorium,
fraudulent  conveyance and similar laws affecting  creditor's  rights  generally
from time to time and to general principles of equity.

     5.  Amendment.  This  Agreement  may be amended  or waived  only by written
instrument duly executed by the parties.

     6. Injunctive Relief.  Each of the parties hereto hereby  acknowledges that
in the  event  of a  breach  by any of them of any  material  provision  of this
agreement, the aggrieved party may be without an adequate remedy of law. Each of
the  parties  therefore  agrees  that in the event of a breach  of any  material
provision of this  agreement  the  aggrieved  party may elect to  institute  and
prosecute proceedings in any court of competent jurisdiction to enforce specific
performance or to enjoin the continuing breach of such provision,  as well as to
obtain  damages for breach of this  agreement.  By seeking or obtaining any such
relief,  the aggrieved party will not be precluded from seeking or obtaining any
other relief to which it may be entitled in equity or at law.

     7.  Governing  Law.  This  agreement  and the legal  relations  between the
parties shall be governed by and  construed in  accordance  with the laws of the
State of Oklahoma, without regard to the principles of conflicts of law thereof.

     8.  Termination.  This  agreement may be terminated  (i) by mutual  written
consent of the parties hereto;  (ii) by Chesapeake at any time by written notice
to Seven Seas and (iii) by  Chesapeake  or Seven  Seas by written  notice to the
other if  Chesapeake's  Senior Secured Note has been paid in full and Chesapeake
shall have  become the  beneficial  owner (for  purposes of Rule 13d-3 under the
Securities Exchange Act of 1934, as amended) of less than 20% of the Warrants or
the Warrant Shares..

     9. Notices. All notices, requests, demands or other communications required
or permitted by this agreement  shall be in writing and effective when received,
and delivery shall be made personally or by registered or certified mail, return
receipt requested,  postage prepaid, or overnight courier or confirmed facsimile
transmission, addressed as follows:

          (a) If to Seven Seas:

                          5555 San Felipe, Suite 1700
                          Houston, Texas 77056
                          Attention:  Mr. Larry A. Ray, President
                          Facsimile No.: (713) 621-9770

                          with a copy to:

                          Gary F. Fuller, Esq.
                          McAfee & Taft A Professional Corporation
                          10th Floor, Two Leadership Square
                          211 N. Robinson
                          Oklahoma City, Oklahoma 73102
                          Facsimile No.: (405) 235-0439

          (b) If to Chesapeake:

                          Chesapeake Energy Corporation
                          P.O. Box 18496
                          Oklahoma City, Oklahoma 73154-0496
                          Attention:  Mr. Aubrey K. McClendon, Chairman & CEO
                          Facsimile No.: (405) 879-9580

                          with a copy to:

                          Shannon Self, Esq.
                          Commercial Law Group, PLLC
                          2715 Oklahoma Tower
                          210 Park Avenue
                          Oklahoma City, Oklahoma 73102
                          Facsimile No.: (405) 232-5553

     10.  Severability.  If any term or other  provision  of this  agreement  is
invalid,  illegal or incapable  of being  enforced by any rule of law, or public
policy, all other conditions and provisions of this agreement shall nevertheless
remain in full force and effect so long as the  economic or legal  substance  of
the  transactions  contemplated  hereby is not affected in any manner adverse to
any party. Upon such  determination that any term or other provision is invalid,
illegal or incapable of being  enforced,  the parties hereto shall  negotiate in
good faith to modify this  agreement so as to effect the original  intent of the
parties as  closely  as  possible  in an  acceptable  manner to the end that the
transactions contemplated hereby are fulfilled to the fullest extent possible.

     11. Entire Agreement. This agreement constitutes the entire agreement among
the parties with respect to the subject  matter hereof and  supersedes all prior
agreements and undertakings, both written and oral, among the parties, or any of
them,  with respect to the subject  matter hereof.  This Agreement  shall not be
assigned by operation of law or otherwise.

     12.  Parties in Interest.  This  agreement  shall be binding upon and inure
solely to the  benefit  of each party  hereto,  and  nothing in this  agreement,
express or implied,  is intended  to or shall  confer upon any other  person any
rights, benefits or remedies of any nature whatsoever under or by reason of this
agreement.

     13.  Headings.  The  descriptive  headings  contained in this agreement are
included for  convenience  of reference only and shall not affect in any way the
meaning or interpretation of this agreement.

     14.   Counterparts.   This  agreement  may  be  executed  in  one  or  more
counterparts, and by the different parties hereto in separate counterparts, each
of which when executed  shall be deemed to be an original but all of which taken
together shall constitute one and the same agreement.

     EXECUTED as of the day and year first above written.

                             SEVEN SEAS PETROLEUM INC.


                             By
                                 Larry A. Ray, President


                             CHESAPEAKE ENERGY CORPORATION


                             By
                                 Aubrey K. McClendon, Chairman and CEO