1
                                                                    EXHIBIT 10.2



                           HARKEN ENERGY CORPORATION


                              Up to US$70,000,000

                     5.5% Senior Convertible Notes Due 2002


                               PLACING AGREEMENT


                                  June 3, 1997
   2
                                    CONTENTS




Clause  Heading
- ------  -------
                                                                                                                      Page
                                                                                                                      ----
                                                                                                                    
1.        Interpretation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   1

2.        Release of the Press Announcement and Delivery of Documents . . . . . . . . . . . . . . . . . . . . . . . .   3

3.        Placing of the Notes  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   4

4.        Representations and Warranties of the Company . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   4

5.        The Placing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    10

6.        Undertakings of the Company . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    10

7.        Indemnification and Contribution  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  12

8.        Fees and Expenses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  14

9.        Closing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  16

10.       Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  17

11.       Survival  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  18

12.       Time  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  18

13.       Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  18

14.       Governing Law . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  20

The Schedule  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  23

   3
THIS AGREEMENT is made on June 3, 1997, BETWEEN

          (1)    HARKEN ENERGY CORPORATION (the "Company");

          (2)    HSBC INVESTMENT BANK PLC ("HSBC"), RAUSCHER PIERCE & CLARK,
                 INC. and RAUSCHER PIERCE & CLARK LIMITED (together "RPC")
                 (together with HSBC, the "Lead Managers"); and

          (3)    BANCA DEL GOTTARDO, JEFFERIES INTERNATIONAL LIMITED and
                 INVESTMENTBANK AUSTRIA A.G. (together with the Lead Managers,
                 the "Managers").

WHEREAS

          (A)    The Company has authorised the creation and issue of up to
U.S.$70,000,000 in aggregate principal amount of 5.5% Senior Convertible Notes
Due 2002 (the "Notes").  The Notes will be in bearer form and are to be
convertible into shares of the common stock (the "Common Stock") of the Company
(the "Shares") at the Conversion Price of U.S.$5.00.

          (B)    The Notes will be in the denominations of U.S.$10,000 and
U.S.$50,000, and integral multiples thereof.  The Notes will initially be
represented by a temporary global bearer note (the "Global Note") which will be
exchangeable for bearer notes in definitive form ("Bearer Notes"), with
interest coupons ("Coupons") attached, in the circumstances specified in the
Global Note.

          (C)    The Notes will be subject to and have the benefit of a trust
indenture (the "Trust Indenture"), a draft of which is in the agreed form and
to which will be scheduled the forms of the Global Note and the Bearer Notes.
The Trust Indenture, will be made between the Company and Marine Midland Bank
(the "Trustee") as trustee for the holders of the Notes from time to time.

          (D)    The Company will, in relation to the Notes, enter into a
paying and conversion agency agreement (the "Agency Agreement") with Midland
Bank plc (the "Principal Paying Agent", "Principal Conversion Agent" and
"Authenticating Agent"), Kredietbank S.A. Luxembourgeoise (the "Listing Agent",
"Luxembourg Paying Agent" and "Luxembourg Conversion Agent") and Swiss Bank
Corporation (a "Paying Agent" and "Conversion Agent") and the Trustee, a draft
of which is in the agreed form.

          (E)    The Lead Managers have conditionally agreed on and subject to
the terms hereof to act as agent for the Company to use their best efforts to
procure Placees for all the Notes.  The Issue is not underwritten.


IT IS AGREED as follows:

1.        Interpretation

          1.1    Definitions: In this Agreement, in addition to the definitions
contained in the recitals, the following expressions have the following
meanings:





                                       1
   4
         "agreed form" means that the form of the document in question has
         been agreed between the proposed parties thereto and by the parties
         hereto prior to the Closing Date and (for the purposes of
         identification signed by or on behalf of) each of such parties and
         that either a copy thereof has been signed for the purpose of
         identification on behalf of Bracewell & Patterson, L.L.P. or such
         document has been signed on behalf of the parties thereto and
         delivered to Bracewell & Patterson, L.L.P. to be held in escrow
         pending release on the Closing Date;

         "AMEX" means The American Stock Exchange, Inc.;

         "Cedel" means Cedel Bank, societe anonyme;

         "Closing Date" means, subject to Clause 9.2, June 11, 1997;

         "Conditions" means the terms and conditions of the Notes as scheduled  
         to the agreed form of the Trust Indenture as the same may be modified
         prior to the Closing Date, and any reference to a numbered "Condition"
         is to a correspondingly numbered provision thereof;

         "Conversion Price" has the meaning given to it in Condition 6;

         "Euroclear" means Morgan Guaranty Trust Company of New York, Brussels
         office, as operator of the Euroclear System;

         "Event of Default" means one of those events specified in Condition 12;

         "Issue" means the proposed issue of the Notes described in the Offering
         Circular;

         "Issue Documents" means the Trust Indenture and the Agency Agreement;

         "Issue Price" means 100 percent of the aggregate principal amount of
         the Notes;

         "Lien" has the meaning given to it in the Trust Indenture;

         "Offering" means the offering of the Notes pursuant to the Offering
         Circular;

         "Offering Circular" means the preliminary offering circular dated May
         28, 1997, as amended by the final offering circular, including all
         documents incorporated by reference therein to the extent such
         documents are not superseded in the Offering Circular prepared in
         connection with the Issue, as the same may be amended or supplemented
         on or before the Closing Date;

         "Placees" has the meaning given to it in Clause 5.1;

         "Placement" means the offering of Notes made pursuant to the Offering
         Circular;

         "Person" has the meaning given to it in the Trust Indenture;

         "Press Announcement" means the press announcement to be mutually agreed
         by the Company and the Lead Managers;





                                       2
   5

         "Principal Subsidiary" has the meaning given to it in the Trust
         Indenture;

         "Restricted Period" means the period commencing on the day after the
         Closing Date and continuing for a period of forty days; it being
         understood that in accordance with the terms of the Notes in the event
         that Regulation S under the Securities Act is amended and such
         amendment is deemed applicable to the Notes, the term "Restricted
         Period" with respect to the Notes shall be subject to extension as
         then required by Regulation S as amended;

         "Securities Act" means the United States Securities Act of 1933, as
         amended;

         "Stabilising Manager" means HSBC, acting in the capacity as stabilising
         manager;

         "Subsidiary" has the meaning given to it in the Trust Indenture;

         "U.S.$" and "U.S. dollars" denote the lawful currency for the time
         being of the United States of America; and

         "Warrant Shares" means the shares of Common Stock of the Company
         issuable upon exercise of the Lead Manager Warrants.

         1.2     Clauses and Schedules: Any reference in this Agreement to a
         Clause or a Schedule is, unless otherwise stated, to a clause hereof
         or a schedule hereto.

         1.3     Headings: Headings and sub-headings are for ease of reference
         only and shall not affect the construction of this Agreement.

2.       Release of the Press Announcement and Delivery of Documents

         2.1     On or immediately following the Closing Date, the Company
         shall release the Press Announcement in the agreed form to the press
         in compliance with Regulation S of the Securities Act and shall
         subsequently file a Report on Form 8-K describing the Offering, as
         required and when due in accordance with the terms of the form.

         2.2     The Company shall as soon as practicable following execution
         of this Agreement and in any event, subject to Clause 2.3, by no later
         than 10.00 a.m. (London time) on the Closing Date, deliver, or procure
         that there are delivered, to the Lead Managers, in the agreed form:

         (a)     the Issue Documents;

         (b)     a legal opinion of Haynes and Boone, L.L.P.;

         (c)     the closing certificates of the Company; and

         (d)     the auditors comfort letter.

         2.3     The Lead Managers may, in their discretion, waive the
         requirement that the Company deliver to them any of the documents
         listed in Clause 2.2 or may extend the time for delivery of





                                       3
   6
         any of the documents.  Any waiver or extension may be granted by the
         Lead Managers subject to such conditions as they determine.

3.       Placing of the Notes

         3.1     The Company undertakes to the Managers that:

         (a)     subject to and in accordance with the provisions of this
         Agreement, the Company will issue the Notes on the Closing Date, in
         accordance with this Agreement and the Trust Indenture; and

         (b)     the Company will, execute and deliver the Issue Documents on
         the Closing Date.

         3.2     In connection with this issue, the Stabilising Manager may
         over-allot or effect transactions which stabilise or maintain the
         market price of the Notes at a level which might not otherwise
         prevail.  Such stabilising, if commenced, may be discontinued at any
         time.  Such stabilising shall be conducted in accordance with all
         applicable laws and rules.  Any loss or profit sustained as a
         consequence of any such over-allotment or stabilising shall, as
         against the Company, be for the account of the Managers.  The Managers
         acknowledge that the Company has not authorised the creation and issue
         of Notes in excess of U.S.$70,000,000 in aggregate principal amount.

         3.3     Each Manager warrants and represents to the Company and each
         other Manager that each contract note in the agreed form executed by
         such Manager selling the Notes shall contain the following legend:

         "Neither the Notes nor the Shares of Common Stock issuable upon
         conversion of the Notes have been or will be registered under the
         United States Securities Act of 1933, as amended (the "Securities
         Act"), and the Notes and the Shares may not be offered, sold,
         transferred, pledged, converted or otherwise disposed of in the U.S.
         or to, or for the account or benefit of, any "U.S. person" unless the
         Notes and the Shares have been registered under the Securities Act and
         any applicable state securities or blue sky laws or exemptions from
         the registration requirements of such laws are available.

         Any United States person who holds this obligation will be subject to
         limitations under the U.S. income tax laws, including the limitations
         provided in Sections 165(j) and 1287(a) of the United States Internal
         Revenue Code of 1986, as amended".

4.       Representations and Warranties of the Company

         4.1     The Company represents and warrants to the Managers, in their
         capacity as Managers and as representatives of each of the Holders of
         the Notes, that:

         (a)     the Company is duly incorporated and in good standing under
         the laws of the State of Delaware and has the requisite power and
         authority to create, issue, offer and  sell the Notes, to execute this
         Agreement and each of the Issue Documents and to undertake and perform
         its obligations herein and therein.  Neither the Company nor any
         Principal Subsidiary has commenced





                                       4
   7

         voluntary  or involuntary proceedings to effect the winding up,
         liquidation or dissolution of the Company;

         (b)     each Principal Subsidiary of the Company is (i) a corporation
         duly organized, validly existing and in good standing under the laws
         of its jurisdiction of incorporation or establishment, (ii) has all
         requisite power and authority and all necessary licenses and permits
         to own and operate its Properties and to carry on its business as now
         conducted and as presently proposed to be conducted, except as would
         not have a material adverse effect on the Company and the Subsidiaries
         taken as a whole, and (iii) is duly licensed or qualified and is
         authorized to do business and is in good standing as a foreign
         corporation in each jurisdiction where the character of its Properties
         or the nature of its activities makes such licensing or qualification
         necessary, except as would not have a material adverse effect on the
         Company and the Subsidiaries taken as a whole;.  None of the Principal
         Subsidiaries nor any other party has commenced voluntary or
         involuntary proceedings to effect the winding up, liquidation or
         dissolution of any of the Principal Subsidiaries;

         (c)     the authorized and outstanding capital stock of the Company is
         as set out in the Offering Circular, and all of the issued Shares have
         been duly and validly authorized and issued and are fully paid and
         non-assessable.  All of the outstanding shares of capital stock of the
         Subsidiaries have been duly and validly authorized and issued and are
         fully paid and non-assessable.  All of the outstanding shares of
         capital stock of each Principal Subsidiary are owned directly or
         indirectly by the Company free and clear of any Liens.  Except as
         disclosed in the Offering Circular, the Company does not own, directly
         or indirectly, any equity or debt securities of any other company,
         corporation, partnership, joint venture or other entity which are
         material to the business or operations of the Company.  Except as
         disclosed in the Offering Circular or the documents incorporated by
         reference therein, at the date hereof and at the Closing Date, there
         are and will not be any outstanding options, warrants or other rights
         to purchase any Shares of the Company;

         (d)     the execution, delivery and performance of this Agreement and
         the Issue Documents has been duly authorized by all requisite
         corporate action of the Company;

         (e)     the creation, offer, sale and issue of the Notes, the
         execution of this Agreement and the Issue Documents and the
         undertaking and performance by the Company of the obligations
         expressed to be assumed by it herein and therein will not violate:

                 (i)      the Certificate of Incorporation or By-laws of the
                          Company;

                 (ii)     assuming compliance by the Managers with the United
                          States securities law requirements set forth in the
                          Schedule, any law applicable to the Company or any
                          Principal Subsidiary or any rule, regulation or order
                          of any court or governmental agency or body having
                          jurisdiction over the Company or any Principal
                          Subsidiary; or

                 (iii)    any provision of any indenture, mortgage, agreement,
                          contract or other instrument to which the Company or
                          any Principal Subsidiary is a party or by which the
                          Company or any Principal Subsidiary is bound or to
                          which any of the properties or assets of the Company
                          or any Principal Subsidiary are subject, or be in
                          conflict





                                       5
   8
                          with, or result in a breach of or constitute (upon
                          notice or lapse of time or both) a default under any
                          such indenture, mortgage, agreement, contract or
                          other instrument or result in the creation or
                          imposition of any Lien upon any of the properties or
                          assets of the Company or any Principal Subsidiary
                          (except any such violation or conflict described
                          therein or herein which would not have a material
                          adverse effect on the Company and its Subsidiaries,
                          taken as a whole);

         (f)     (i)      this Agreement constitutes;

                 (ii)     upon due execution by or on behalf of the Company and
                          the other parties thereto, the Issue Documents will
                          constitute; and

                 (iii)    upon due execution of the Trust Indenture, the Global
                          Note and the Bearer Notes by or on behalf of the
                          Company and the other parties thereto and due
                          authentication of the Global Note and the Bearer
                          Notes, the Notes will constitute:

         legal, valid, binding and enforceable obligations of the Company,
         enforceable against the Company in accordance with their respective
         terms, except that the enforceability thereof may be limited by any
         applicable bankruptcy, insolvency, reorganisation or other similar
         laws relating to or affecting the enforcement of creditors' rights
         generally and by equitable principles regardless of whether such
         enforceability is considered in a proceeding in equity or at law and
         except as rights to indemnity or contribution may be limited under
         applicable law;

         (g)     Each of the Global Note, the Bearer Notes, the Coupons and the
         Shares conform in all material respects to the description of such
         Global Note, Bearer Notes, Coupons and Shares contained in the
         Offering Circular, and the Shares conform to the terms of the Common
         Stock contained in the Certificate of Incorporation;

         (h)     upon issuance of the Notes in accordance with the Trust
         Indenture, the Notes will constitute direct, general and unconditional
         obligations of the Company which:

                 (i)      rank pari passu among themselves and with the 6.5%
                          Senior Convertible Notes Due 2000 of the Company, and
                          with all present and future Indebtedness other than
                          Subordinated Obligations and Indebtedness secured by
                          Liens (all as defined in the Trust Indenture) of the
                          Company; and

                 (ii)     will rank senior to all existing and future
                          Subordinated Obligations (as defined in the Trust
                          Indenture), except to the extent permitted by the
                          applicable laws relating to creditors' rights;

         (i)     the Shares, as and when issued by the Company from time to
         time  pursuant to conversion of the Notes in accordance with the terms
         of the Issue Documents, will be validly issued and outstanding, fully
         paid and non- assessable and will not be subject to any pre-emptive or
         similar right, and the Holder of each Note will receive good and valid
         title to the Shares upon conversion of such Note in accordance with
         the terms of the Issue Documents, free and clear of any Lien, except
         such as may have been created by the Holder of the Note and such
         restrictions on transfer as may be imposed under United States federal
         or state securities or blue sky laws.  Other than the





                                       6
   9
         approval of the listing of the Shares by AMEX and any applicable
         registration requirements, no consent or approval by the stockholders
         of the Company or any other Person is required to be obtained by the
         Company for the consummation of the issuance of the Shares by the
         Company pursuant to conversion of the Notes.  As and from the expiry
         of the Restricted Period (so long as not extended) (i) each stock
         certificate representing any of the Shares shall be free of any type
         of restrictive legend, (ii) the Shares represented by each such stock
         certificate shall not be subject to any "stop transfer" or similar
         order at the Company's transfer agent for its Common Stock, and (iii)
         the Company shall have filed with the AMEX or Alternative Stock
         Exchange all necessary filings in respect of the inclusion of the
         Shares in the shares of Common Stock of the Company listed for trading
         on the AMEX or Alternative Stock Exchange;

         (j)     upon delivery to the Lead Managers, the Lead Manager Warrants
         (as defined in Clause 8.2 hereof) will be duly issued and will
         constitute the legal, valid and binding obligations of the Company,
         enforceable against the Company in accordance with their terms, except
         as the enforceability thereof may be limited by any applicable
         bankruptcy, insolvency, reorganization or other similar laws relating
         to or affecting the enforcement of creditors' rights, regardless of
         whether such enforceability is considered in a proceeding in equity or
         at law.  The shares of Common Stock issuable upon exercise of the Lead
         Manager Warrants have been duly and validly authorized for issuance in
         accordance with the terms of the Warrants and reserved for issuance to
         the extent authorized by applicable law.  The shares of Common Stock
         issuable upon exercise of Lead Manager Warrants, as and when issued
         and delivered in accordance with the terms thereof, and upon receipt
         by the Company of the exercise price therefor, will be duly and
         validly issued and outstanding, fully paid and non- assessable, and
         will not be subject to any pre-emptive or similar right;

         (k)     assuming compliance by the Managers with the United States
         securities law requirements as set out in the Schedule and other than
         the approval of AMEX, all authorizations, consents and approvals
         required by the Company for or in connection with the creation and
         issue of the Notes, the execution of this Agreement and the Issue
         Documents, the performance by the Company of the obligations
         undertaken by it herein and therein and the distribution of the
         Offering Circular in accordance with the provisions set out in the
         Schedule have been obtained and are in full force and effect;

         (l)     neither the nature of the Company nor of any Subsidiary, nor
         of any of their respective businesses or Properties, nor any
         relationship between the Company or any Subsidiary and any other
         Person, nor any circumstance in connection with the execution and
         delivery of the Indenture or the offer, issue, sale or delivery of the
         Global Note, or the Bearer Notes, or the Shares is such as to require
         a consent, approval or authorization of, or filing, registration or
         qualification with, any governmental authority on the part of the
         Company as a condition to the execution and delivery of this Indenture
         or the offer, issue, sale or delivery of the Global Note or the Bearer
         Notes or the issuance of Shares pursuant to conversion of the Notes;

         (m)     the Offering Circular sets forth a description of the business
         conducted and proposed to be conducted as of the date thereof by the
         Company orits Principal Subsidiaries, and the principal Properties of
         the Company or its Principal Subsidiaries, which description is true
         and correct in all material respects.  The Company shall use its best
         efforts to ensure that the Offering Circular will comply with the
         requirements of the Luxembourg Stock Exchange on the Closing Date;





                                       7
   10
         (n)     each of the Company and  its Principal Subsidiaries, has (i)
         Good Title to its Oil and Gas Properties and (ii) good and defensible
         title to all other material Properties and assets described in the
         Offering Circular as owned by it, in the case of such other Properties
         and assets free and clear of all Liens, except as disclosed in the
         Offering Circular or which are not material to the business of the
         Company and its Subsidiaries taken as a whole or which will not
         conflict with the obligations of the Company under this Agreement, the
         Issue Documents and the Notes.  Each of the Company and its
         Subsidiaries has a valid, subsisting lease for the real Property
         (other than its Oil and Gas Properties, subject to clause (i) of this
         sentence) described in the Offering Circular as leased by it.  To the
         knowledge of the Company's management, except as otherwise disclosed
         in the Offering Circular, the Company and each of its Subsidiaries
         owns or possesses or is the valid licensee of all patents, trademarks,
         service marks, trade names, copyrights and other intellectual property
         necessary to carry on its business as described in the Offering
         Circular, and neither the Company nor any Subsidiary has received any
         notice of infringement of or conflict with asserted rights of others
         with respect to any of the foregoing which, if the subject of an
         unfavourable decision, ruling or finding, would result, individually
         or in the aggregate, in any material adverse change in, or which would
         materially and adversely affect the business, operations, financial
         position or business prospects of, the Company and its Subsidiaries
         taken as a whole;

         (o)     based on the laws currently in effect and subject to the
         provisos set forth in the Offering Circular, all payments of principal
         and interest in respect of the Notes and the Coupons, and all other
         payments that may become due and payable under the terms of the Notes
         or the Coupons may be made free and clear of, and without withholding
         or deduction for, any taxes, duties, assessments or governmental
         charges of any nature whatsoever imposed, levied, collected, withheld
         or assessed by United States federal and state taxing authorities or
         any political subdivision or authority thereof or therein having power
         to tax other than in the case of payments to be made by the Company to
         U.S. persons in circumstances where the Company is obliged to withhold
         payments due to U.S. back-up withholding tax but not gross-up under
         Condition 9;

         (p)     the Offering Circular is true and accurate in all material
         respects and is not misleading in any material respect in light of the
         circumstances under which they were made; any opinions, predictions or
         intentions expressed in the Offering Circular are true and honestly
         held or made and are not misleading in any material respect and have
         been made after due and careful consideration of all relevant factors
         known to the Company; the Offering Circular does not contain any
         untrue statement of a material fact and does not omit to state any
         material fact necessary to make such information not misleading in any
         material respect in light of the circumstances under which they were
         made; provided, that this representation and warranty shall not apply
         to any statement or omission relating to matters of foreign law or
         made in reliance and in conformity with information furnished in
         writing to the Company by any Manager for use in the Offering
         Circular;

         (q)     the Company will use the proceeds from the sale of the Notes
         for the purposes described in the Offering Circular;

         (r)     neither the Company nor any of its Subsidiaries is, directly
         or indirectly, controlled by, or acting on behalf of any Person which
         is, an "investment company" or an "affiliated person" of, "promoter"
         or "principal" of an "investment company," within the meaning of the
         Investment Company Act of 1940, as amended;





                                       8
   11
         (s)     neither the Company nor any of its Subsidiaries is a "holding
         company" within the meaning of the Public Utility Holding Company Act
         of 1935, as amended, or a "public utility" within the meaning of the
         Federal Power Act, as amended;

         (t)     except as disclosed in the Offering Circular at the date
         hereof or at the date when this representation is deemed to be
         repeated, as the case may be, there are no actions, suits,
         investigations or proceedings pending to which the Company or any
         Principal Subsidiary is a party before or by any court or governmental
         agency or body, which would result, individually or in the aggregate,
         in any material adverse change in the financial condition or results
         of operations of the Company and its Subsidiaries, taken as a whole,
         or which would materially and adversely affect the properties or
         assets of the Company, its subsidiaries or any branch thereof, and to
         the knowledge of the Company, no such actions, suits, investigations
         or proceedings are threatened by any Person;

         (u)     except as disclosed in the Offering Circular and since
         December 31, 1996 there has been no adverse change, or any development
         reasonably likely to involve an adverse change, in the condition
         (financial or otherwise) or general affairs of the Company that is
         material in the context of the issue of the Notes; and

         (v)     to the knowledge of the Company, no event has occurred which
         is or would (with the passage of time, the giving of notice, the
         making of any determination or otherwise) become an Event of Default.

         4.2     The Company's consolidated audited financial statements
         including its statement of operations for the three fiscal years ended
         December 31, 1994, December 31, 1995 and December 31, 1996,
         respectively, and its balance sheets at December 31, 1994, December
         31, 1995 and December 31, 1996, and the related consolidated
         statements of operations, stockholders' equity and cash flows of the
         Company and its Subsidiaries for the fiscal years ended on such dates,
         were prepared in accordance with generally accepted accounting
         principles in the United States consistently applied and present
         fairly (in conjunction with the notes thereto) the financial condition
         of the Company and its Subsidiaries (taken as a whole) as at the date
         they were prepared and the results of the operations of the Company
         and its Subsidiaries (taken as a whole) during the respective fiscal
         years then ended.  The Company's unaudited condensed consolidated
         financial statements, including its statement of operations for the
         quarterly period ended March 31, 1997, and its balance sheet at March
         31, 1997, and related condensed statements of stockholders' equity and
         cash flows of the Company and its Subsidiaries for the period ended on
         such date contain all adjustments necessary to present fairly the
         Company's financial position as of March 31, 1997 and the results of
         its operations and changes in cash flows for the quarterly period then
         ended.  Except as set forth in the Offering Circular, since March 31,
         1997, there has been no change in the properties, business, profits or
         condition (financial or otherwise) of the Company and its Subsidiaries
         except changes in the ordinary course of business, none of which
         individually or in the aggregate have had a material adverse effect on
         the properties, business, assets, profits or financial condition of
         the Company and its Subsidiaries taken as a whole.

         4.3     The Company shall forthwith notify the Lead Managers of
         anything which at any time prior to payment into the Segregated
         Account of the net proceeds of the issue of the Notes to the Company
         on the Closing Date has or may have rendered, or will or may render,
         untrue or incorrect





                                       9
   12
         in any material respect any representation and warranty by the Company
         in this Agreement as if it had been made or given at such time with
         reference to the facts and circumstances then subsisting.

         4.4     The representations and warranties in Clause 4.1 which refer
         to the Offering Circular shall be deemed to be repeated (with
         reference to the relevant text of the Offering Circular and to the
         facts and circumstances then subsisting) on each date falling on or
         before the Closing Date on which the Offering Circular is amended or
         supplemented and distributed by the Managers.

5.       The Placing

         5.1     The Lead Managers, relying on the representations and
         warranties given by the Company herein, hereby undertake to the
         Company that, subject to and in accordance with the provisions of this
         Agreement they will act as agent for the Company (which appointment
         the Company hereby confirms) to use their best efforts to procure
         qualified subscribers ("Placees") to subscribe for all of the Notes on
         the Closing Date at the Issue Price free from all Liens and with all
         rights attached thereto.  Neither of the Lead Managers shall have any
         obligations themselves to subscribe for any Notes.

         5.2     The Company hereby confirms that the foregoing appointment
         confers on the Lead Managers all powers, authorities and discretions
         on behalf of the Company which are reasonably necessary for or
         reasonably incidental to the making of the Issue on the basis set out
         in this Agreement, the Offering Circular and the Trust Indenture and
         hereby agrees to ratify and confirm everything which the Lead Managers
         shall lawfully and properly do in the exercise of, or in accordance
         with, such appointment, powers, authorities and discretions.

         5.3     The Lead Managers shall by no later than June 11, 1997 (or
         such later date as the Lead Managers and the Company may agree) notify
         the Company of the number of Notes, with an aggregate principal amount
         of up to U.S.$70,000,000, in respect of which subscription commitments
         have been obtained ("Placed Notes").

6.       Undertakings of the Company

         6.1     The Company shall deliver to the Managers on the date hereof
         and hereafter from time to time as requested as many copies of the
         Offering Circular as the Lead Managers may reasonably request.

         6.2     Without prejudice to their obligations under applicable law
         and the requirements of the Luxembourg Stock Exchange, the Company
         shall at the request of the Lead Managers at any time prior to payment
         of the net proceeds of the issue of the Notes to the Company on the
         Closing Date amend or supplement the Offering Circular in order to
         correct any untrue statement of a material fact required to be stated
         therein or necessary to make the statements therein in the light of
         the circumstances under which they were made not misleading and the
         Company shall deliver to the Managers from time to time as many copies
         of the relevant amendment or supplement as the Managers may reasonably
         request.

         6.3     Except as requested by the Managers in connection with the
         sale of the Notes, neither the Company or any affiliate of the Company
         nor anyone acting on behalf of the Company or any such





                                       10
   13
         affiliate, other than the Managers shall, directly or indirectly,
         offer or sell, or attempt to offer, sell or dispose of, any of the
         Notes, or solicit any offer to buy, or otherwise approach or negotiate
         in respect of, any of the Notes.

         6.4     Assuming compliance with the terms of the Schedule by the
         Managers, the Company shall furnish such information, execute such
         instruments and take such action, if any, as may be required to effect
         the placement of the Notes under the securities laws of each
         jurisdiction in which the Notes are offered for sale or sold;
         provided, however, that with respect to the U.S. securities laws the
         foregoing shall only be in accordance with the safe harbor provided by
         Regulation S and in no event shall the Company be required to qualify
         to do business in any jurisdiction where it is not now so qualified or
         which would subject the Company to taxation or to take any action that
         would subject it to general or unlimited service of process in any
         jurisdiction where it is not now so subject.

         6.5     The Company shall furnish or make available to the Lead
         Managers or their counsel such additional documents  and information
         regarding the Company and its affairs as the Lead Managers may from
         time to time request, including any and all documentation reasonably
         requested in connection with their due diligence efforts regarding
         information in the Offering Circular and in order to evidence the
         accuracy or completeness of any of the conditions contained in this
         Agreement; and all actions taken by the Company to authorize the
         issuance and sale of the Notes and to reserve for issuance the shares
         of Common Stock issuable upon exercise of the Lead Manager Warrants
         shall be reasonably satisfactory in form and substance to the Lead
         Managers.

         6.6     The Company shall, at all times upon reasonable request from
         the date hereof through the Closing Date, (i) make available to each
         purchaser or its advisers, or both, prior to acceptance of its
         subscription, such information (in addition to that contained in the
         Offering Circular  concerning the Offering, the Company and any other
         relevant matters as it possesses or can acquire without unreasonable
         effort or expense, and (ii) provide each purchaser or its advisers, or
         both, the opportunity to ask questions of, and receive answers from,
         the Company with respect to such matters.

         6.7     The Company shall not offer or sell any securities of the same
         class as the Notes until a period of six (6) months has elapsed from
         the Closing Date of the Offering, unless the Company shall have
         provided the Lead Managers with a satisfactory opinion from the
         Company's legal counsel to the effect that the proposed offer or sale
         will not result in any violation of the Securities Act, any state
         securities or blue sky laws, and any rules or regulations promulgated
         thereunder.

         6.8     From the date hereof to and including the Closing Date, the
         Company shall not, make any press release or other public announcement
         (i) without the prior written consent of the Lead Managers, (ii) prior
         to having furnished each of the Lead Managers with a copy of the
         proposed form of the press release or public announcement and giving
         the Lead Managers and their counsel a reasonable opportunity to review
         and comment upon the same or (iii) in a manner to which the Lead
         Managers or their counsel shall reasonably object, unless the Company
         is required to do so by applicable law.





                                       11
   14
         6.9     The Company shall make arrangements reasonably satisfactory to
         the Lead Managers to ensure that the Bearer Notes are delivered to the
         Trustee or the Authenticating Agent for authentication in the form
         required by, and otherwise in accordance with, the Issue Documents.

         6.10    The Company shall use all reasonable endeavours to procure the
         listing of the Shares and the Warrant Shares on the AMEX or an
         Alternative Stock Exchange and to maintain the same until none of the
         Notes or Warrants, as the case may be, are outstanding.

         6.11    The Company shall use all reasonable endeavours to procure the
         listing of the Notes on the Luxembourg Stock Exchange and to maintain
         the same until none of the Notes are outstanding; provided, that, if
         it is impracticable or unduly burdensome to maintain the listing of
         the Notes on the Luxembourg Stock Exchange, the Company shall use all
         reasonable endeavours to procure and maintain as aforesaid a listing
         of or quotation for the Notes on such other stock exchange or
         exchanges as they may (with the approval of the Lead Managers and the
         Trustee) decide.

         6.12    The Company has agreed that if the Restricted Period has been
         lengthened because such amendments are applicable to the Notes, that
         it will register the issuance or resale of the Shares under the
         Securities Act as soon as practicable and maintain the effectiveness
         of a registration statement covering such Shares for such period of
         time as may be necessary to effectuate the resale of the Shares
         without regard to any such extension of the Restricted Period, in
         accordance with the Terms and Conditions of the Notes.

         6.13    In the event that any potential investor is contacted and
         introduced to the Company by the Managers during the Offering Period
         and such investor provides financing to the Company at any time during
         one (1) year from the Closing Date, the Managers shall be entitled to
         the same fees provided for in Clause 8.1 below with respect to such
         financing as if it had occurred as part of the Placement.

7.       Indemnification and Contribution

         7.1     The Company agrees to defend, indemnify, and hold each of the
         Managers and their respective officers, directors, agents, employees
         and controlling persons (each, an "Indemnified Person") harmless from
         and against any losses, claims, damages, or liabilities (including,
         without limitation, court costs and reasonable attorneys' fees) to
         which any Indemnified Person may become subject insofar as the same
         arises from an action which alleges or is based upon:

         (a)     any alleged untrue statement of a material fact contained in
         the Offering Circular, or omission of a material fact, or any other
         violation of applicable securities or other laws, rules and
         regulations; or

         (b)     the performance by each of the Managers of its obligations and
         services, or the performance by any other Indemnified Person on behalf
         of the Managers of any obligations hereunder in accordance with this
         Agreement or otherwise in connection with the subject matter hereof,
         including the issue of any material provided by the Company, or after
         having been approved by, the Managers; or





                                       12
   15
         (c)     any breach or alleged breach of or failure to comply with, the
         laws or regulations of the United States or of any other State thereof
         by the Company or any Affiliate resulting from the release of the
         Press Announcement, and the preparation and distribution of the
         Offering Circular; or

         (d)     any material breach or alleged material breach of any of the
         representations and warranties, or any of the undertakings or
         obligations of the Company;  or

         (e)     the creation, allotment, offer, sale, issue and placing of the
         Notes;

         irrespective of the role or concurrent negligence of such Indemnified
         Person, by the Company or its officers, directors, agents, employees
         and controlling persons and to reimburse such Indemnified Person for
         any legal or other expenses reasonably incurred by them in connection
         with investigating, settling or defending any action or claim in
         connection therewith (including, without limitation, court costs and
         reasonable attorneys' fees) up until such time as the Company assumes
         the defense of any such action or claim;  provided, however, that the
         Company shall not be liable in any such case to the extent that any
         such loss, claim, damage or liability (i) directly or indirectly
         results from any untrue statement of a material fact or omission of a
         material fact made in the Offering Circular in reliance upon and in
         conformity with written information provided to the Company by or on
         behalf of the Managers specifically for inclusion in such Offering
         Circular or (ii) is found in a final judgment of a court of competent
         jurisdiction to have resulted from the Indemnified Person's gross
         negligence or bad faith in performing their services hereunder.  If
         for any reason the foregoing indemnification is unavailable to the
         Indemnified Person or insufficient to hold the Indemnified Person
         harmless, then the Company shall contribute to the amount paid or
         payable by the Indemnified Person as a result of such loss, claim,
         damage, or liability in such proportion as is appropriate to reflect
         not only the relative benefits received by the Company on the one hand
         and the Indemnified Person on the other hand but also the relative
         fault of the Company and the Indemnified Person, as well as any
         relevant equitable considerations.  The Company agrees to reimburse
         the Indemnified Person within ten days after presentation of any
         statement by the Indemnified Person of all reasonable expenses
         (including without limitation of the generality of the foregoing, the
         reasonable fees and expenses of attorneys selected by the Indemnified
         Person) incurred in connection with any testimony the Indemnified
         Person or its employees are required to give (in court, before a
         regulatory agency, by deposition or otherwise) in any regulatory or
         court proceeding (including depositions), whether or not the
         Indemnified Person is a party, and which related directly or
         indirectly to the proposed Placement.  This indemnity shall be without
         prejudice to any other rights of any other Indemnified Person.

         7.2     With respect to the foregoing Clause 7.1 of the
         indemnification, the Company agrees that an Indemnified Person shall
         not be deemed to have been grossly negligent for reasonably relying
         upon any written untrue statement or alleged omission of a material
         fact necessary to make the statements, in light of the circumstances
         in which such statements were made, not misleading, contained in or
         omitted from any information provided to the Indemnified Person by or
         on behalf of the Company (including, without limitation of the
         generality of the foregoing, any accountant or attorney employed or
         retained by the Company).  The indemnification provided in the
         foregoing Clause 7.1 hereof shall extend upon the same terms and
         conditions to each Person, if any, who may be deemed to control the
         Indemnified Person and shall be applicable, to the extent set forth
         herein, whether or not negligence of the person entitled to
         indemnification is alleged or proven.





                                       13
   16
         7.3     Each Indemnified Person shall, in the event any action (with
         respect to which indemnity or reimbursement from the Company may be
         sought by the Indemnified Person on account of agreements contained
         herein) shall be brought or threatened against such Indemnified
         Person, prompt notice will be given to the Company in writing of such
         action, together with a copy of all papers served on, or received by,
         the Indemnified Person in connection with such action provided that
         failure to give such notice shall not affect the Indemnified Person's
         right under these indemnification provisions, unless, and only to the
         extent that, such failure results in the Company's forfeiture of
         substantive rights or defenses.  If such an event occurs the Company
         shall assume the defense of such action, including the employment of
         counsel and the payment of all expenses.  The Indemnified Person shall
         have the right to employ separate counsel in any such action and to
         participate in the defense thereof, but the fees and expenses of such
         counsel shall be at the expense of the Indemnified Person unless (a)
         the employment thereof has been specifically authorized by the Company
         in writing;  (b) the Company has failed to assume the defense and
         employ counsel;  or (c) the named parties, or parties threatened to be
         named, to any such action (including any impleaded parties or parties
         threatened to be impleaded) include both the Indemnified Person and
         the Company, and the Indemnified Person has been advised by such
         counsel that there may be one or more legal defenses available to the
         Indemnified Person which are different from or additional to those
         available to the Company (in which cases the Indemnified Person shall
         have the right to employ their own counsel and in such cases any
         reasonable fees and expenses of such counsel shall be paid by the
         Company).

         7.4     The obligations under this Clause 7 shall survive any
         termination of this Agreement, in whole or in part.

8.       Fees and Expenses

         8.1     The Company shall, on the Closing Date, pay to HSBC:

         (i)      for the account of the Lead Managers, a placement fee of
         three percent (3%) of the aggregate principal amount of the Placed
         Notes, which shall be allocated as between themselves, and any
         Managers of the Issue as the Lead Managers see fit;

         (ii)    for the account of HSBC, a financial advisory fee of  two
         percent (2%) of the aggregate principal amount of the Placed Notes;
         and

         (iii)   for the account of Rauscher Pierce & Clark Limited, a
         financial advisory fee of  two percent (2%) of the aggregate principal
         amount of the Placed Notes.

         Such commissions and fees shall be deducted from the Issue Price.  The
         Lead Managers and the Company acknowledge and agree that any fees
         payable to  third parties, other than the parties to the Issue
         Documents as set forth in Section 8.3(d), to be agreed in a side
         letter between the Company and the Lead Managers shall be payable out
         of the financial advisory fees set forth in subparts (ii) and (iii)
         above.

         8.2     The Company shall issue to the Lead Managers or their
         respective designees on the Closing Date warrants (the "Lead Manager
         Warrants") pursuant to Regulation S to purchase an aggregate number of
         shares of Common Stock equal in number to eight percent (8%) of the
         total





                                       14
   17
         number of Shares issuable upon conversion of the Notes, at an initial
         exercise price equal to U.S.$5.00, which shall be issued in the form
         of Lead Manager warrant certificates (the "Lead Manager Warrant
         Certificates"), a draft of which is in the agreed form.  Each Lead
         Manager Warrant shall entitle the holder to purchase one share at an
         initial exercise price equal to the Conversion Price of the Notes, and
         having a term of two and one half (22) years, and may be exercised as
         to all or any lesser number of shares of Common Stock covered thereby,
         commencing six (6) months after the date of issuance.

         8.3     The Company is responsible for paying and shall reimburse the
         party incurring:

         (a)     the fees and expenses of the legal, accountancy and other
         professional advisers instructed by the Company in connection with the
         creation and issue of the Notes and the preparation of the Offering
         Circular;

         (b)     the costs incurred in connection with the preparation and
         execution of this Agreement and the Issue Documents;

         (c)     the cost of setting, proofing, printing and delivering the
         Offering Circular, the Global Note and the Bearer Notes;

         (d)     the fees and expenses of the other parties to the Issue
         Documents;

         (e)     the cost of any advertising agreed between the Company, HSBC
         and RPC; and

         (f)     the costs incurred in connection with the application for the
         Notes to be listed on the Luxembourg Stock Exchange.

         provided however, that any fees or costs incurred by HSBC and/or RPC
         shall not, together with any amounts reimbursed pursuant to this
         Section 8, exceed $200,000 without the prior written consent of the
         Company.

         8.4     In addition, the Company shall reimburse HSBC and RPC for all
         legal fees and expenses and any travelling, communication, courier,
         postage and other out-of-pocket expenses incurred by them in
         connection with the management of the issue of the Notes and any
         amount due to HSBC or RPC under this sub-clause may be deducted from
         the Issue Price or paid direct by the Company to any third party to
         whom such moneys are payable; provided, however, that such expenses
         shall not exceed U.S.$200,000 without the prior written consent of the
         Company (including the due diligence visits by the Lead Managers,
         roadshow expenses (if any), listing expenses, costs associated with
         production of a research report on the Company to be issued following
         the Closing, other costs specified in Section 8.3 and post-closing
         advertisements, but excluding the fees and expenses of the Company's
         legal counsel).  Such reimbursement is not contingent upon the
         successful completion of the Placement.

         8.5     All payments in respect of the obligations of the Company
         hereunder shall be made free and clear of and without withholding or
         deduction for, any taxes, duties, assessments or governmental charges
         of whatsoever nature imposed, levied, collected, withheld or assessed
         by United States federal or state taxing authorities or any political
         subdivision or any authority thereof or therein having power to tax,
         unless such withholding or deduction is required by law.  In that
         event, the Company shall pay such additional amounts as will result in
         the receipt by the relevant





                                       15
   18
         Person of such amounts as would have been received by it if no such
         withholding or deduction had been required provided that such Person
         is not a U.S. Person or entity.

         8.6     The Company shall pay all stamp, registration and other taxes
         and duties (including any interest and penalties thereon or in
         connection therewith) which may be payable upon or in connection with
         the creation, sale and issue of the Notes, and the execution of this
         Agreement and the Issue Documents, and the Company shall indemnify
         each Manager against any claim, demand, action, liability, damages,
         cost, loss or expense (including, without limitation, legal fees)
         which it may incur as a result or arising out of or in relation to any
         failure to pay or delay in paying any of the same.

         9.      Closing

         9.1     Subject to this Agreement not having been terminated pursuant
         to Clause 10 and subject to Clause 9.3, the closing of the Issue shall
         take place on the Closing Date, whereupon, subject to and in
         accordance with the terms of this Agreement and the Trust Indenture:

         (a)     the Company shall deliver the Global Note (in respect of the
         number of Bearer Notes), duly executed on behalf of the Company and
         authenticated in accordance with the Trust Indenture, to a common
         depositary designated for the purpose by Euroclear and Cedel for
         credit on the Closing Date to the accounts of Euroclear and Cedel with
         such common depositary; and

         (b)     against such delivery of the Global Note referred to in Clause
         9.1 the Lead Managers shall upon receipt of moneys from each Placee
         make payment of such net proceeds received from the issue of the Notes
         (namely the Issue Price less the fees and expenses that are to be
         deducted pursuant to Clause 8) to the Segregated Account by wire
         transfer in U.S. dollars either for same day value or on the business
         day immediately thereafter together with interest at an annual rate of
         five and one-half percent (5.5%) to such account as the Company has
         designated to the Lead Managers.

         9.2     The Company and the Lead Managers may agree to postpone the
         Closing Date to another date not later than June 30, 1997, whereupon
         all references herein to the Closing Date shall be construed as being
         to that later date.

         9.3     The Lead Managers shall only be under obligation to proceed
         with the foregoing if:

         (a)     the Lead Managers receive on or before the Closing Date:

                 (i)      a legal opinion dated the Closing Date and addressed
                          to the Lead Managers and the Trustee from Haynes and
                          Boone, L.L.P in a form reasonably acceptable to the
                          Lead Managers;

                 (ii)     closing certificates dated the Closing Date,
                          addressed to the Lead Managers and signed by a duly
                          authorised signatory on behalf of the  Company in
                          substantially the agreed form;





                                       16
   19
                 (iii)    a closing auditors comfort letter dated the Closing
                          Date and addressed to the Managers from Arthur
                          Andersen L.L.P. in substantially the agreed form;

                 (iv)     confirmation from the Luxembourg Stock Exchange that
                          the Notes have been approved for listing on such
                          exchange subject to closing;

         (b)     the Issue Documents are executed on or before the Closing Date
         by or on behalf of all parties thereto in substantially the agreed
         form;

         (c)     there has, since the date of this Agreement, been no adverse
         change, or any development reasonably likely to involve an adverse
         change, in the condition (financial or otherwise) or general affairs
         of the Company or any Subsidiary that is material in the context of
         the offer, sale or issue of the Notes; and

         (d)     the representations and warranties by the Company in this
         Agreement are true and correct on the date of this Agreement in all
         material respects and on each date on which they are deemed to be
         repeated and would be true and correct if they were repeated on the
         Closing Date with reference to the facts and circumstances then
         subsisting.

10.      Termination

         10.1    Either of the Lead Managers may give a termination notice to
         the Company at any time prior to the Closing if:

         (a)     any representation and warranty by the Company in this
         Agreement is or proves to be untrue or incorrect in any material
         respect (in the opinion of the Lead Managers) after consultation with
         their legal counsel on the date of this Agreement or on any date on
         which it is deemed to be repeated;

         (b)     the Company fails to perform any of its obligations hereunder
         which in the opinion of the Lead Managers after consultation with
         their legal counsel is material;

         (c)     any of the conditions in Clause 9.3 is not satisfied or waived
         by the Lead Managers on the Closing Date; or

         (d)     since the date of this Agreement there has been, in the
         opinion of either of the Lead Managers (after such consultation with
         the Company as may be reasonably practicable in the circumstances),
         such a change in national or international financial, political or
         economic conditions, currency exchange rates or exchange controls on
         the U.S. or international oil and gas markets as would in its view be
         likely to prejudice materially the success of the offering and
         distribution of the Notes or dealings in the Notes in the secondary
         market.

         10.2    The Company may give a termination notice to the Lead Managers
         at any time prior to the delivery by the Company of the Global Note to
         the common depositary on the Closing Date, if any of the Lead Managers
         fails to perform any of its obligations hereunder or comply with any
         of the terms hereof which in either case is material in the opinion of
         the Company after consultation with its legal counsel.





                                       17
   20
         10.3    Upon the giving of a termination notice under Clause 10.1 or
         10.2 and subject to Clause

         10.4:

         (a)     the Company shall be discharged from performance of its
         obligations under Clauses 3. 1 and 7. 1;

         (b)     the Managers shall be discharged from performance of their
         respective obligations hereunder; and

         (c)     the provisions of Clauses 1, 7, 8.3, 8.4, 13 and 14 shall
         continue in full force and effect.

         10.4    A discharge pursuant to Clause 10.2 shall not affect the other
         obligations of the parties hereto and shall be without prejudice to
         accrued liabilities.

11.      Survival

         The provisions of this Agreement shall continue in full force and
         effect notwithstanding the completion of the arrangements set out
         herein for the issue of the Notes and regardless of any investigation
         by any party hereto.

12.      Time

         Any date or period specified herein may be postponed or extended by
         mutual written agreement among the parties but as regards any date or
         period originally fixed or so postponed or extended, time shall be of
         the essence.

13.      Notices

         13.1     All notices and other communications hereunder shall be made
         in writing and in English (by letter, telex or fax) and shall be sent
         as follows:

         (a)     if to the Company, to it at:

                 5605 North MacArthur Boulevard
                 Suite 400
                 Irving, Texas 75038

                 Attention:   Bruce N. Huff
                              Senior Vice President and Chief Financial Officer

                 Tel:             (972) 753 6839
                 Fax:             (972) 753 6926





                                       18
   21
                 With a copy
                 to:              Larry E. Cummings
                                  Vice President, Secretary and General Counsel

                 Tel:             (972) 752 6932
                 Fax:             (972) 753 6963

         (b)  if to HSBC, to it at:

                 Thames Exchange
                 10 Queen Street Place
                 London EC4R 1BL

                 Attention:       Simon Eagles
                                  Equity Capital Markets

                 Tel:             0171 336 2237
                 Fax:             0171 929 1520
                 Telex:           888866

         (c)     if to RPC, to it at:

                 56 Green Street
                 London WlY 3RH


                 Attention:       David P. Quint
                                  Managing Director

                 Tel:             0171 491 2434
                 Fax:             0171 491 9081

         13.2    Every notice or other communication sent in accordance with
         Clause 13.1 shall be effective as follows:

         (a)     if sent by letter or fax, upon receipt by the addressee; and

         (b)     if sent by telex, upon receipt by the sender of the addressee's
         answerback at the end of transmission;

         provided, that any such notice or other communication which would
         otherwise take effect after 4.00 p.m.  (Greenwich Mean Time) on any
         particular day shall not take effect until 10.00 a.m. (Greenwich Mean
         Time)  on the immediately succeeding business day in the place of the
         addressee.





                                       19
   22
14.      Governing Law

         This Agreement shall be governed by and construed in accordance with
         the laws of the State of New York without regard to the conflict of
         laws provisions thereof.





                                       20
   23
IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed by their duly authorised representatives as of the day and year first
above written.


HARKEN ENERGY CORPORATION

By:     /s/ Bruce N. Huff            
        -------------------------------
Name:   Bruce N. Huff                
        -------------------------------
Title:  SVP and CFO                  
        -------------------------------
                                       
                                       
HSBC INVESTMENT BANK PLC               
                                       
By:     /s/ Simon Eagles             
        -------------------------------
Name:   Simon Eagles                 
        -------------------------------
Title:  Director - Equity Capital Marke
        -------------------------------
                                       
                                       
RAUSCHER PIERCE & CLARK, INC.          
                                       
By:     /s/ David P. Quint           
        -------------------------------
Name:   David P. Quint               
        -------------------------------
Title:  President                     
        -------------------------------
                                       
RAUSCHER PIERCE & CLARK LIMITED        
                                       
By:     /s/ David P. Quint           
        -------------------------------
Name:   David P. Quint               
        -------------------------------
Title:  Managing Director            
        -------------------------------





                                       21
   24


BANCA DEL GOTTARDO

By:     /s/ Edward Law            
        --------------------------
Name:   Edward Law                
        --------------------------
Title:  Manager                   
        --------------------------
                                  
                                  
 JEFFERIES INTERNATIONAL LIMITED  
                                  
By:     /s/ Edward Law          
        --------------------------
Name:   Edward Law              
        --------------------------
Title:  Manager                
        --------------------------
                                  
                                  
 INVESTMENTBANK AUSTRIA A.G.      
                                  
By:     /s/ Edward Law          
        --------------------------
Name:   Edward Law              
        --------------------------
Title:  Manager                
        --------------------------





                                       22
   25
                                  The Schedule

                              Selling Restrictions


1.       General

         1.1     Each Manager acknowledges that no action has been or will be
         taken in any jurisdiction by the Company that would permit a public
         offering of the Notes, or possession or distribution of any offering
         material in relation thereto, in any country or jurisdiction where
         action for that purpose is required.

         1.2     Each Manager undertakes to the Company that it will comply
         with all applicable laws and regulations in each country or
         jurisdiction in which it purchases, offers, sells or delivers Notes or
         has in its possession or distributes such offering material, in all
         cases at its own expense including, without limitation, in the United
         Kingdom, the provisions of the Criminal Justice Act 1993 and the Money
         Laundering Regulations (1993).

         1.3     Each Manager undertakes to the Company that it will comply
         with all U.S. laws and regulations applicable to the offer and sale of
         the Notes, including Regulation S of the Securities Act, the exemption
         from the registration requirements of the Securities Act pursuant to
         which the Notes are being offered and sold.  Notwithstanding any of
         the agreements, terms or procedures set forth in this Agreement, if
         Regulation S is amended such amendments are deemed applicable to the
         offering of the Notes, each of the Managers and the Company undertake
         to comply with Regulation S, as amended, and to negotiate in good
         faith the agreements, terms and procedures set forth in this Agreement
         if necessary to comply with Regulations S, as amended.

2.       United States

         2.1     The Notes have not been and will not be registered under the
         Securities Act and may not be offered or sold within the United States
         except pursuant to an exemption from the registration requirements of
         the Securities Act.  The Shares have not been registered under the
         Securities Act and may not be offered or sold within the United States
         unless registered under the Securities Act or in a transaction
         pursuant to an exemption from the registration requirements of the
         Securities Act.

         2.2     The offers and sales of the Notes are to be effected pursuant
         to the exemption from the registration requirements of the Securities
         Act pursuant to Regulation S thereunder.  The Company and the Managers
         have established the following procedures in connection with the
         offer, sale and resale of the Notes:

         (a)     Each offer and sale of the Notes shall be made only in an
         "offshore transaction" (as defined in Regulation S) and to investors
         who are not "U.S. persons" (as defined in Regulation S);

         (b)     no offer or sale of any of the Notes shall be made in the
         United States or to, or for the account or benefit of, any "U.S.
         person" (as defined in Regulation S);





                                       23
   26
         (c)     no "directed selling efforts" (as defined in Regulation S) in
         respect of the Notes shall be made in or directed toward the United
         States;

         (d)     "offering restrictions" (as defined in Regulation S) in respect
         of the Notes shall be implemented;

         (e)     each purchaser of the Notes shall be furnished with the
         Offering Circular prepared by the Company together with any amendments
         thereof and supplements thereto as shall have been prepared by the
         Company, which describe, among other things, (i) the Notes, (ii) such
         summary financial and business information concerning the Company as
         is considered appropriate; and (iii) the restrictions on resale of the
         Notes;

         (f)     no Offering Circular (or any revision or amendment thereof or
         supplement thereto) shall be delivered to any "U.S. person" (as
         defined in Regulation S);

         (g)     the Company agrees to furnish the Managers with such number of
         copies of the Offering Circular and any revision or amendment thereof
         or supplement thereto as the Managers may require in connection with
         the offer and sale of the Notes; and

         (h)     each purchaser of the Notes shall be required to confirm (i)
         by means of written certification, (ii) by acceptance of their
         subscription allotment, or (iii) by other means of confirmation
         acceptable to the Company and the Lead Managers that it is not a "U.S.
         person" (as defined in Regulation S) and that such purchaser will not
         offer or sell the Notes otherwise than in compliance with the
         Securities Act and the rules and regulations of the Securities and
         Exchange Commission thereunder.

         2.3     Each Manager hereby represents, warrants and covenants with
         the Company that the Manager, its affiliates, and any person acting on
         behalf of, or as agent of, any of the foregoing, shall, whether as
         principal or agent:

         (a)     comply with the procedures set forth in Sections 2.2 and 3
         hereof;

         (b)     offer and sell the Notes to the purchasers only in "offshore
         transactions" (as defined in Regulation S);

         (c)     not engage with respect to the Notes in any "directed selling
         efforts" (as defined in Regulation S) in or directed toward the United
         States;

         (d)     comply with all "offering restrictions" (as defined in
         Regulation S) in respect of the Notes;

         (e)     not deliver any Offering Circular or any revision or amendment
         thereof or supplement thereto to any "U.S. person" (as defined in
         Regulation S);

         (f)     not make any offers or sales of any of the Notes or any
         interest therein in the United States or to, or for the account or
         benefit of, any "U.S. person" (as defined in Regulation S);

         (g)     comply with all laws and regulations of those jurisdictions in
         which the Notes are offered or sold which are applicable to the offer
         and sale of the Notes; and





                                       24
   27
         (h)     on or prior to the Closing Date, send to each person who is
         acting on behalf of the Manager a written confirmation or other notice
         to the effect that such person is subject to the same restrictions on
         offers and sales that apply to the Manager.

         2.4     The Company hereby represents, warrants and covenants with the
         Managers that the Company its affiliates, and any person acting on
         behalf of, or as agent of, any of the foregoing, shall, whether as
         principal or agent:

         (a)     comply with the procedures set forth in Section 2.2 hereof;

         (b)     offer and sell the Notes to the purchasers only in "offshore
         transactions" (as defined in Regulation S);

         (c)     not engage with respect to the Notes in any "direct selling
         efforts" (as defined in Regulation S) in or directed toward the United
         States;

         (d)     comply with all "offering restrictions" (as defined in
         Regulation S) in respect of the Notes;

         (e)     not deliver any Offering Circular or any revision or amendment
         thereof or supplement thereto to any "U.S. person" (as defined in
         Regulation S);

         (f)     not make any offers or sales of any of the Notes or any
         interest therein in the United States or to, or for the account or
         benefit of, any "U.S. person" (as defined in Regulation S); and

         (g)     not make any sales of any of the Notes or any interest therein
         to any person other than the purchasers; provided, however, that
         insofar as this representation and warranty involves any participating
         broker-dealers in the offering, any affiliate of such broker-dealer or
         any officer, director, employee or agent of such broker-dealer, to the
         extent such broker-dealer is acting as Manager for the offering of the
         Notes, such representation is made by the Company solely on the basis
         of and in reliance upon the representations and warranties of such
         broker-dealer.

3.       United Kingdom

         Each Manager represents, warrants and undertakes to the Company that:

         (a)     it has not offered or sold and prior to the expiry of the
         period of six (6) months from the Closing Date will not offer or sell
         any Notes to persons in the United Kingdom, except to persons whose
         ordinary activities involve them in acquiring, holding, managing or
         disposing of investments (as principal or agent) for the purposes of
         their businesses in circumstances which have not resulted in an offer
         to the public within the meaning of the Public Offer of Securities
         Regulations 1995;

         (b)     it has complied and will comply with all applicable provisions
         of the Financial Services Act 1986 and applicable orders and
         regulations thereunder with respect to anything done by it in relation
         to the Notes in, from or otherwise involving the United Kingdom; and

         (c)     it has only issued or passed on and will only issue or pass on
         to any person in the United Kingdom any document received by it in
         connection with the issue of the Notes, if that person is





                                       25
   28
         of a kind described in Article 11(3) of the Financial Services Act
         1986 (Investment Advertisements) (Exemptions) Order 1996 or is a
         person to whom such document may otherwise lawfully be issued or
         passed on.





                                       26