Document:

<PAGE>
                                                                    EXHIBIT 4(B)

                          Description of Capital Stock

General

         The authorized capital of the Company consists of 150,000,000 ordinary
shares (common stock), par value $0.001 per share, and 50,000,000 undesignated
shares, par value $0.001 per share, which undesignated shares may be designated
and created as shares of any other classes or series of shares with the
respective rights and restrictions determined upon the creation thereof by
action of the Board of Directors.

Common Stock

         All outstanding shares of common stock of the Company are fully paid
and nonassessable. Holders of the Company's common stock may share pro rata in
any dividends, when and if declared by the Company's Board of Directors. Subject
to any rights granted to any series or class of shares other than the common
stock, the holders of the Company's common stock are entitled to one vote for
each share held of record with respect to matters that are required by law to be
submitted to shareholders, including electing directors. Holders of the
Company's common stock are not entitled to cumulative voting.

         No holder of common stock shall, by reason of such holding, have any
preemptive or preferential right to subscribe to or purchase any securities of
the Company. Upon liquidation or dissolution of the Company, all of our assets
that are available to be distributed after satisfying prior rights may be
distributed pro rata among the holders of the Company's common stock according
to their holdings. The rights of holders of the Company's common stock may be
subject to the rights of any preferred shareholders if our undesignated shares
are designated as preferred shares.

Series A Junior Participating Preferred Stock

         1. Designation and Amount. There shall be a series of Preferred Stock
that shall be designated as "Series A Junior Participating Preferred Stock," and
the number of shares constituting such series shall be 50,000,000. Such number
of shares may be increased or decreased by resolution of the Board of Directors;
provided, however, that no decrease shall reduce the number of shares of Series
A Junior Participating Preferred Stock to less than the number of shares then
issued and outstanding plus the number of shares issuable upon exercise of
outstanding rights, options or warrants or upon conversion of outstanding
securities issued by the Company.

         2. Dividends and Distributions.

                  (A) Subject to the prior and superior rights of the holders of
any shares of any series of Preferred Stock ranking prior and superior to the
shares of Series A Junior Participating Preferred Stock with respect to
dividends, the holders of shares of Series A Junior Participating Preferred
Stock, in preference to the holders of shares of any class or series of stock of
the Company ranking junior to the Series A Junior Participating Preferred Stock,
shall be entitled to receive, when, as and if declared by the Board of Directors
out of funds legally available for the
<PAGE>

purpose, quarterly dividends payable in cash on the 1st day of March, June,
September and December in each year (each such date being referred to herein as
a "Quarterly Dividend Payment Date"), commencing on the first Quarterly Dividend
Payment Date after the first issuance of a share or fraction of a share of
Series A Junior Participating Preferred Stock, in an amount per share (rounded
to the nearest cent) equal to the greater of (a) $1.00 or (b) the Adjustment
Number (as defined below) times the aggregate per share amount of all cash
dividends, and the Adjustment Number times the aggregate per share amount
(payable in kind) of all non-cash dividends or other distributions other than a
dividend payable in Common Shares, par value $0.001, (the "Common Stock") or a
subdivision of the outstanding shares of Common Stock (by reclassification or
otherwise), declared on the Common Stock since the immediately preceding
Quarterly Dividend Payment Date, or, with respect to the first Quarterly
Dividend Payment Date, since the first issuance of any share or fraction of a
share of Series A Junior Participating Preferred Stock. The "Adjustment Number"
shall initially be 100. In the event the Company shall at any time (i) declare
any dividend on Common Stock payable in shares of Common Stock, (ii) subdivide
the outstanding Common Stock or (iii) combine the outstanding Common Stock into
a smaller number of shares, then in each such case the Adjustment Number in
effect immediately prior to such event shall be adjusted by multiplying such
Adjustment Number by a fraction the numerator of which is the number of shares
of Common Stock outstanding immediately after such event and the denominator of
which is the number of shares of Common Stock that were outstanding immediately
prior to such event.

                  (B) The Company shall declare a dividend or distribution on
the Series A Junior Participating Preferred Stock as provided in paragraph (A)
above immediately after it declares a dividend or distribution on the Common
Stock (other than a dividend payable in shares of Common Stock); provided that,
in the event no dividend or distribution shall have been declared on the Common
Stock during the period between any Quarterly Dividend Payment Date and the next
subsequent Quarterly Dividend Payment Date, a dividend of $1.00 per share on the
Series A Junior Participating Preferred Stock shall nevertheless be payable on
such subsequent Quarterly Dividend Payment Date.

                  (C) Dividends shall begin to accrue and be cumulative on
outstanding shares of Series A Junior Participating Preferred Stock from the
Quarterly Dividend Payment Date next preceding the date of issue of such shares
of Series A Junior Participating Preferred Stock, unless the date of issue of
such shares is prior to the record date for the first Quarterly Dividend Payment
Date, in which case dividends on such shares shall begin to accrue from the date
of issue of such shares, or unless the date of issue is a Quarterly Dividend
Payment Date or is a date after the record date for the determination of holders
of shares of Series A Junior Participating Preferred Stock entitled to receive a
quarterly dividend and before such Quarterly Dividend Payment Date, in either of
which events such dividends shall begin to accrue and be cumulative from such
Quarterly Dividend Payment Date. Accrued but unpaid dividends shall not bear
interest. Dividends paid on the shares of Series A Junior Participating
Preferred Stock in an amount less than the total amount of such dividends at the
time accrued and payable on such shares shall be allocated pro rata on a
share-by-share basis among all such shares at the time outstanding. The Board of
Directors may fix a record date for the determination of holders of shares of
Series A Junior Participating Preferred Stock entitled to receive payment of a
dividend or distribution declared thereon, which record date shall be no more
than 30 days prior to the date fixed for the payment thereof.

<PAGE>

         3. Voting Rights. The holders of shares of Series A Junior
Participating Preferred Stock shall have the following voting rights:

                  (A) Each share of Series A Junior Participating Preferred
Stock shall entitle the holder thereof to a number of votes equal to the
Adjustment Number on all matters submitted to a vote of the stockholders of the
Company.

                  (B) Except as otherwise provided herein, in the Articles of
Association or by law, the holders of shares of Series A Junior Participating
Preferred Stock, the holders of shares of any other class or series entitled to
vote with the Common Stock and the holders of shares of Common Stock shall vote
together as one class on all matters submitted to a vote of stockholders of the
Company.

                  (C)

                           (i) If at any time dividends on any Series A Junior
Participating Preferred Stock shall be in arrears in an amount equal to six
quarterly dividends thereon, the occurrence of such contingency shall mark the
beginning of a period (herein called a "default period") that shall extend until
such time when all accrued and unpaid dividends for all previous quarterly
dividend periods and for the current quarterly dividend period on all shares of
Series A Junior Participating Preferred Stock then outstanding shall have been
declared and paid or set apart for payment. During each default period, (1) the
number of Directors shall be increased by two, effective as of the time of
election of such Directors as herein provided, and (2) the holders of Preferred
Stock (including holders of the Series A Junior Participating Preferred Stock)
upon which these or like voting rights have been conferred and are exercisable
(the "Voting Preferred Stock") with dividends in arrears in an amount equal to
six quarterly dividends thereon, voting as a class, irrespective of series,
shall have the right to elect such two Directors.

                           (ii) During any default period, such voting right of
the holders of Series A Junior Participating Preferred Stock may be exercised
initially at a special meeting called pursuant to subparagraph (iii) of this
Section 3(C) or at any annual meeting of stockholders, and thereafter at annual
meetings of stockholders, provided that such voting right shall not be exercised
unless the holders of at least one-third in number of the shares of Voting
Preferred Stock outstanding shall be present in person or by proxy. The absence
of a quorum of the holders of Common Stock shall not affect the exercise by the
holders of Voting Preferred Stock of such voting right.

                           (iii) Unless the holders of Voting Preferred Stock
shall, during an existing default period, have previously exercised their right
to elect Directors, the Board of Directors may order, or any stockholder or
stockholders owning in the aggregate not less than ten percent of the total
number of shares of Voting Preferred Stock outstanding, irrespective of series,
may request, the calling of a special meeting of the holders of Voting Preferred
Stock, which meeting shall thereupon be called by the Chairman of the Board, the
President, a Vice President or the Secretary of the Company. Notice of such
meeting and of any annual meeting at which holders of Voting Preferred Stock are
entitled to vote pursuant to this paragraph (C)(iii) shall be given to each
holder of record of Voting Preferred Stock by mailing a copy of such notice to
him at his last address as the same appears on the books of the Company. Such
meeting
<PAGE>

shall be called for a time not earlier than 20 days and not later than 60 days
after such order or request or, in default of the calling of such meeting within
60 days after such order or request, such meeting may be called on similar
notice by any stockholder or stockholders owning in the aggregate not less than
ten percent of the total number of shares of Voting Preferred Stock outstanding.
Notwithstanding the provisions of this paragraph (C)(iii), no such special
meeting shall be called during the period within 60 days immediately preceding
the date fixed for the next annual meeting of the stockholders.

                           (iv) In any default period, after the holders of
Voting Preferred Stock shall have exercised their right to elect Directors
voting as a class, (x) the Directors so elected by the holders of Voting
Preferred Stock shall continue in office until their successors shall have been
elected by such holders or until the expiration of the default period, and (y)
any vacancy in the Board of Directors may be filled by vote of a majority of the
remaining Directors theretofore elected by the holders of the class or classes
of stock which elected the Director whose office shall have become vacant.
References in this paragraph (C) to Directors elected by the holders of a
particular class or classes of stock shall include Directors elected by such
Directors to fill vacancies as provided in clause (y) of the foregoing sentence.

                           (v) Immediately upon the expiration of a default
period, (x) the right of the holders of Voting Preferred Stock as a class to
elect Directors shall cease, (y) the term of any Directors elected by the
holders of Voting Preferred Stock as a class shall terminate and (z) the number
of Directors shall be such number as may be provided for in the Articles of
Association or Memorandum of Association irrespective of any increase made
pursuant to the provisions of paragraph (C) of this Section 3 (such number being
subject, however, to change thereafter in any manner provided by law or in the
Articles of Association or Memorandum of Association). Any vacancies in the
Board of Directors effected by the provisions of clauses (y) and (z) in the
preceding sentence may be filled by a majority of the remaining Directors.

                  (D) Except as set forth herein, holders of Series A Junior
Participating Preferred Stock shall have no special voting rights and their
consent shall not be required (except to the extent they are entitled to vote
with holders of Common Stock as set forth herein) for taking any corporate
action.

         4. Certain Restrictions.

                  (A) Whenever quarterly dividends or other dividends or
distributions payable on the Series A Junior Participating Preferred Stock as
provided in Section 2 are in arrears, thereafter and until all accrued and
unpaid dividends and distributions, whether or not declared, on shares of Series
A Junior Participating Preferred Stock outstanding shall have been paid in full,
the Company shall not

                           (i) declare or pay dividends on, make any other
distributions on, or redeem or purchase or otherwise acquire for consideration
any shares of stock ranking junior (either as to dividends or upon liquidation,
dissolution or winding up) to the Series A Junior Participating Preferred Stock;
<PAGE>

                           (ii) declare or pay dividends on or make any other
distributions on any shares of stock ranking on a parity (either as to dividends
or upon liquidation, dissolution or winding up) with the Series A Junior
Participating Preferred Stock, except dividends paid ratably on the Series A
Junior Participating Preferred Stock and all such parity stock on which
dividends are payable or in arrears in proportion to the total amounts to which
the holders of all such shares are then entitled; or

                           (iii) redeem or purchase or otherwise acquire for
consideration any shares of Series A Junior Participating Preferred Stock, or
any shares of stock ranking on a parity with the Series A Junior Participating
Preferred Stock, except in accordance with a purchase offer made in writing or
by publication (as determined by the Board of Directors) to all holders of
Series A Junior Participating Preferred Stock, or to all such holders and the
holders of any such shares ranking on a parity therewith, upon such terms as the
Board of Directors, after consideration of the respective annual dividend rates
and other relative rights and preferences of the respective series and classes,
shall determine in good faith will result in fair and equitable treatment among
the respective series or classes.

                  (B) The Company shall not permit any subsidiary of the Company
to purchase or otherwise acquire for consideration any shares of stock of the
Company unless the Company could, under paragraph (A) of this Section 4,
purchase or otherwise acquire such shares at such time and in such manner.

         5. Reacquired Shares. Any shares of Series A Junior Participating
Preferred Stock purchased or otherwise acquired by the Company in any manner
whatsoever shall be retired and canceled promptly after the acquisition thereof.
All such shares shall upon their cancellation become authorized but unissued
shares of Preferred Stock and may be reissued as part of a new series of
Preferred Stock to be created by resolution or resolutions of the Board of
Directors, subject to any conditions and restrictions on issuance set forth
herein.

         6. Liquidation, Dissolution or Winding Up.

                  (A) Upon any liquidation (voluntary or otherwise), dissolution
or winding up of the Company, no distribution shall be made to the holders of
shares of stock ranking junior (either as to dividends or upon liquidation,
dissolution or winding up) to the Series A Junior Participating Preferred Stock
unless, prior thereto, the holders of shares of Series A Junior Participating
Preferred Stock shall have received $100 per share, plus an amount equal to
accrued and unpaid dividends and distributions thereon, whether or not declared,
to the date of such payment (the "Series A Liquidation Preference"). Following
the payment of the full amount of the Series A Liquidation Preference, no
additional distributions shall be made to the holders of shares of Series A
Junior Participating Preferred Stock unless, prior thereto, the holders of
shares of Common Stock shall have received an amount per share (the "Common
Adjustment") equal to the quotient obtained by dividing (i) the Series A
Liquidation Preference by (ii) the Adjustment Number. Following the payment of
the full amount of the Series A Liquidation Preference and the Common Adjustment
in respect of all outstanding shares of Series A Junior Participating Preferred
Stock and Common Stock, respectively, holders of Series A Junior Participating
Preferred Stock and holders of shares of Common Stock shall, subject to the
prior rights of all other series of Preferred Stock, if any, ranking prior
thereto, receive their ratable and
<PAGE>

proportionate share of the remaining assets to be distributed in the ratio of
the Adjustment Number to 1 with respect to such Series A Junior Participating
Preferred Stock and Common Stock, on a per share basis, respectively.

                  (B) In the event, however, that there are not sufficient
assets available to permit payment in full of the Series A Liquidation
Preference and the liquidation preferences of all other series of Preferred
Stock, if any, that rank on a parity with the Series A Junior Participating
Preferred Stock, then such remaining assets shall be distributed ratably to the
holders of such parity shares in proportion to their respective liquidation
preferences. In the event, however, that there are not sufficient assets
available to permit payment in full of the Common Adjustment, then such
remaining assets shall be distributed ratably to the holders of Common Stock.

                  (C) Neither the merger or consolidation of the Company into or
with another corporation nor the merger or consolidation of any other
corporation into or with the Company shall be deemed to be a liquidation,
dissolution or winding up of the Company within the meaning of this Section 6,
but the sale, lease or conveyance of all or substantially all the Company's
assets shall be deemed to be a liquidation, dissolution or winding up of the
Company within the meaning of this Section 6.

         7. Consolidation, Merger, etc. In case the Company shall enter into any
consolidation, merger, combination or other transaction in which the shares of
Common Stock are exchanged for or changed into other stock or securities, cash
and/or any other property, then in any such case each share of Series A Junior
Participating Preferred Stock shall at the same time be similarly exchanged or
changed in an amount per share equal to the Adjustment Number times the
aggregate amount of stock, securities, cash and/or any other property (payable
in kind), as the case may be, into which or for which each share of Common Stock
is changed or exchanged.

         8. Redemption.

                  (A) The Company, at its option, may redeem shares of the
Series A Junior Participating Preferred Stock in whole at any time and in part
from time to time, at a redemption price equal to the Adjustment Number times
the current per share market price (as such term is hereinafter defined) of the
Common Stock on the date of the mailing of the notice of redemption, together
with unpaid accumulated dividends to the date of such redemption. The "current
per share market price" on any date shall be deemed to be the average of the
closing price per share of such Common Stock for the ten consecutive Trading
Days (as such term is hereinafter defined) immediately prior to such date;
provided, however, that in the event that the current per share market price of
the Common Stock is determined during a period following the announcement of (A)
a dividend or distribution on the Common Stock other than a regular quarterly
cash dividend or (B) any subdivision, combination or reclassification of such
Common Stock and the ex-dividend date for such dividend or distribution, or the
record date for such subdivision, combination or reclassification, shall not
have occurred prior to the commencement of such ten Trading Day period, then,
and in each such case, the current per share market price shall be properly
adjusted to take into account ex-dividend trading. The closing price for each
day shall be the last sales price, regular way, or, in case no such sale takes
place on such day, the
<PAGE>

average of the closing bid and asked prices, regular way, in either case as
reported in the principal transaction reporting system with respect to
securities listed or admitted to trading on the American Stock Exchange, or, if
the Common Stock is not listed or admitted to trading on the American Stock
Exchange, on the principal national securities exchange on which the Common
Stock is listed or admitted to trading, or, if the Common Stock is not listed or
admitted to trading on any national securities exchange but sales price
information is reported for such security, as reported by the National
Association of Securities Dealers, Inc. Automated Quotations System ("Nasdaq")
or such other self-regulatory organization or registered securities information
processor (as such terms are used under the Securities Exchange Act of 1934, as
amended) that then reports information concerning the Common Stock, or, if sales
price information is not so reported, the average of the high bid and low asked
prices in the over-the-counter market on such day, as reported by Nasdaq or such
other entity, or, if on any such date the Common Stock is not quoted by any such
entity, the average of the closing bid and asked prices as furnished by a
professional market maker making a market in the Common Stock selected by the
Board of Directors of the Company. If on any such date no such market maker is
making a market in the Common Stock, the fair value of the Common Stock on such
date as determined in good faith by the Board of Directors of the Company shall
be used. The term "Trading Day" shall mean a day on which the principal national
securities exchange on which the Common Stock is listed or admitted to trading
is open for the transaction of business, or, if the Common Stock is not listed
or admitted to trading on any national securities exchange but is quoted by
Nasdaq, a day on which Nasdaq reports trades, or, if the Common Stock is not so
quoted, a Monday, Tuesday, Wednesday, Thursday or Friday on which banking
institutions in the State of New York are not authorized or obligated by law or
executive order to close.

                  (B) In the event that fewer than all the outstanding shares of
the Series A Junior Participating Preferred Stock are to be redeemed, the number
of shares to be redeemed shall be determined by the Board of Directors and the
shares to be redeemed shall be determined by lot or pro rata as may be
determined by the Board of Directors or by any other method that may be
determined by the Board of Directors in its sole discretion to be equitable.

                  (C) Notice of any such redemption shall be given by mailing to
the holders of the shares of Series A Junior Participating Preferred Stock to be
redeemed a notice of such redemption, first class postage prepaid, not later
than the fifteenth day and not earlier than the sixtieth day before the date
fixed for redemption, at their last address as the same shall appear upon the
books of the Company. Each such notice shall state: (i) the redemption date;
(ii) the number of shares to be redeemed and, if fewer than all the shares held
by such holder are to be redeemed, the number of such shares to be redeemed from
such holder; (iii) the redemption price; (iv) the place or places where
certificates for such shares are to be surrendered for payment of the redemption
price; and (v) that dividends on the shares to be redeemed will cease to accrue
on the close of business on such redemption date. Any notice that is mailed in
the manner herein provided shall be conclusively presumed to have been duly
given, whether or not the stockholder received such notice, and failure duly to
give such notice by mail, or any defect in such notice, to any holder of Series
A Junior Participating Preferred Stock shall not affect the validity of the
proceedings for the redemption of any other shares of Series A Junior
Participating Preferred Stock that are to be redeemed. On or after the date
fixed for redemption as stated in such notice, each holder of the shares called
for redemption shall surrender the certificate evidencing such shares to the
Company at the place designated in such notice and shall thereupon be entitled
to
<PAGE>

receive payment of the redemption price. If fewer than all the shares
represented by any such surrendered certificate are redeemed, a new certificate
shall be issued representing the unredeemed shares.

                  (D) The shares of Series A Junior Participating Preferred
Stock shall not be subject to the operation of any purchase, retirement or
sinking fund.

         9. Ranking. The Series A Junior Participating Preferred Stock shall
rank junior to all other series of the Company's Preferred Stock as to the
payment of dividends and the distribution of assets, unless the terms of any
such series shall provide otherwise, and shall rank senior to the Common Stock
as to such matters.

         10. Amendment. At any time that any shares of Series A Junior
Participating Preferred Stock are outstanding, the Articles of Association of
the Company shall not be amended in any manner which would materially alter or
change the powers, preferences or special rights of the Series A Junior
Participating Preferred Stock so as to affect them adversely without the
affirmative vote of the holders of two-thirds or more of the outstanding shares
of Series A Junior Participating Preferred Stock, voting separately as a class.

         11. Fractional Shares. Series A Junior Participating Preferred Stock
may be issued in fractions of a share that shall entitle the holder, in
proportion to such holder's fractional shares, to exercise voting rights,
receive dividends, participate in distributions and to have the benefit of all
other rights of holders of Series A Junior Participating Preferred Stock.<PAGE>
                                                                    EXHIBIT 4(K)

                            MASTER WARRANT AGREEMENT

                                     BETWEEN

                            SEVEN SEAS PETROLEUM INC.

                                       AND

                       U.S. TRUST COMPANY OF TEXAS, N.A.,

                                AS WARRANT AGENT

                         DATED AS OF DECEMBER 14, 2001

             WARRANTS TO PURCHASE 12,619,500 SHARES OF COMMON STOCK

<PAGE>

                                TABLE OF CONTENTS

<Table>
<Caption>
                                                                                                                Page
                                                                                                                ----

<S>                                                                                                              <C>
1.       Definitions..............................................................................................1
         1.1      Affiliate.......................................................................................1
         1.2      Agreement.......................................................................................1
         1.3      Business Day....................................................................................1
         1.4      Common Stock....................................................................................1
         1.5      Company.........................................................................................1
         1.6      Company Order...................................................................................2
         1.7      Convertible Securities..........................................................................2
         1.8      Corporate Agency Office.........................................................................2
         1.9      Current Market Price............................................................................2
         1.10     Effective Registration Statement................................................................2
         1.11     Exercise Date...................................................................................2
         1.12     Exercise Price..................................................................................2
         1.13     Exchange Act....................................................................................2
         1.14     Expiration Date.................................................................................2
         1.15     Holder..........................................................................................2
         1.16     Indenture.......................................................................................2
         1.17     Non-Surviving Combination.......................................................................2
         1.18     Note............................................................................................2
         1.19     Options.........................................................................................3
         1.20     Person..........................................................................................3
         1.21     Registrar.......................................................................................3
         1.22     Registration Statement..........................................................................3
         1.23     Rule 144........................................................................................3
         1.24     SEC.............................................................................................3
         1.25     Securities Act..................................................................................3
         1.26     Subsidiary......................................................................................3
         1.27     Warrant Agent...................................................................................3
         1.28     Warrant Certificates............................................................................3
         1.29     Warrant Register................................................................................3
         1.30     Warrant Shares..................................................................................3
         1.31     Warrants........................................................................................3
2.       Warrants.................................................................................................4
         2.1      Issuance of Warrants............................................................................4
         2.2      Form, Denomination and Date of Warrants.........................................................4
         2.3      Execution and Delivery of Warrant Certificates..................................................4
                  2.3.1    Maximum Number.........................................................................4
                  2.3.2    Execution..............................................................................4
         2.4      Transfer and Exchange...........................................................................5
                  2.4.1    Transfer of Warrants...................................................................5
                  2.4.2    Expenses...............................................................................5
                  2.4.3    Identification.........................................................................5
         2.5      Temporary Securities............................................................................5
</Table>

                                      -i-

<PAGE>

<Table>
<S>                                                                                                              <C>
3.       Exercise and Expiration of Warrants......................................................................6
         3.1      Exercise of Warrants............................................................................6
         3.2      Expiration of Warrants..........................................................................6
         3.3      Method of Exercise..............................................................................6
         3.4      Partial Exercise................................................................................7
         3.5      Issuance of Warrant Shares......................................................................7
         3.6      Time of Exercise................................................................................7
         3.7      Application of Funds Upon Exercise of Warrants..................................................7
         3.8      Payment of Taxes................................................................................7
         3.9      Surrender of Certificates.......................................................................8
         3.10     Shares Issuable.................................................................................8
4.       Registration Rights......................................................................................8
         4.1      Registration Procedures.........................................................................8
         4.2      Suspension of Exercise..........................................................................9
5.       Anti-Dilution Adjustments................................................................................9
         5.1      Issuance of Common Stock........................................................................9
         5.2      Effect on Exercise Price of Certain Events.....................................................10
                  5.2.1    Issuance of Rights or Options.........................................................10
                  5.2.2    Issuance of Convertible Securities....................................................10
                  5.2.3    Change in Option Price or Conversion Rate.............................................11
                  5.2.4    Expired Options and Unexercised Convertible Securities................................11
                  5.2.5    Calculation of Consideration Received.................................................11
                  5.2.6    Integrated Transactions...............................................................12
                  5.2.7    Treasury Shares.......................................................................12
                  5.2.8    Record Date...........................................................................12
         5.3      Stock Splits and Reverse Splits................................................................12
         5.4      Reorganizations and Asset Sales................................................................12
                  5.4.1    Reorganization or Reclassification....................................................13
                  5.4.2    Consolidation; Merger, Etc. ..........................................................13
         5.5      Certain Events.................................................................................13
         5.6      Notice of Adjustment...........................................................................13
         5.7      Notices to Holders.............................................................................14
         5.8      Exceptions to Anti-Dilution Adjustment.........................................................14
6.       Loss or Mutilation......................................................................................15
7.       Capitalization..........................................................................................15
8.       Reservation and Authorization of Warrant Shares.........................................................16
9.       Warrant Transfer Books..................................................................................16
10.      Warrant Holders.........................................................................................17
         10.1     Voting or Dividend Rights......................................................................17
         10.2     Rights of Action...............................................................................17
         10.3     Treatment of Holders...........................................................................17
         10.4     Communications to Holders......................................................................17
11.      Warrant Agent...........................................................................................18
         11.1     Nature of Duties and Responsibilities Assumed..................................................18
         11.2     Right to Consult Counsel.......................................................................19
         11.3     Compensation, Reimbursement and Indemnification................................................19
</Table>

                                      -ii-

<PAGE>

<Table>
<S>                                                                                                              <C>
         11.4     Warrant Agent May Hold Company Securities......................................................19
         11.5     Resignation and Removal; Appointment of Successor..............................................20
         11.6     Appointment of Countersigning Agent............................................................20
12.      Miscellaneous...........................................................................................21
         12.1     Notices Generally..............................................................................21
         12.2     APPLICABLE LAW.................................................................................22
         12.3     Persons Benefitting............................................................................22
         12.4     Counterparts...................................................................................22
         12.5     Amendments.....................................................................................22
         12.6     Inspection.....................................................................................23
         12.7     Entire Agreement...............................................................................23
         12.8     Headings.......................................................................................23

EXHIBITS

Form of Warrant Certificate.....................................................................................A-1
</Table>

                                     -iii-

<PAGE>

                            MASTER WARRANT AGREEMENT

                  THIS MASTER WARRANT AGREEMENT is entered into December 14,
2001, between SEVEN SEAS PETROLEUM INC., a Cayman Islands exempted company
limited by shares (the "Company"), and U.S. TRUST COMPANY OF TEXAS, N.A. (the
"Warrant Agent").

                                    RECITALS:

         A. The Company is offering the Company's 12% Series A Senior Secured
Notes due 2004 (the "Notes") in the aggregate principal amount of Twenty-Two
Million Five Hundred Thousand Dollars ($22,500,000.00) pursuant to a rights
offering to the Company's shareholders and others.

         B. The Company proposes to issue with the Notes, Common Stock Purchase
Warrants (the "Warrants") to purchase Twelve Million Six Hundred Nineteen
Thousand Five Hundred (12,619,500) of the Company's ordinary shares, par value
$0.001, pursuant to this Agreement.

         C. The Company desires to retain the Warrant Agent to act on behalf of
the Company and the Warrant Agent is willing to act on behalf of the Company in
connection with the issuance of the Warrants and the other matters provided
herein.

                  NOW, THEREFORE, in consideration of the mutual agreements set
forth herein the parties agree as follows:

         1. Definitions. Wherever used in this Agreement the following terms
will have the meanings indicated:

                  1.1 Affiliate. As to any Person, any other Person directly or
indirectly controlling or controlled by or under direct or indirect common
control of such Person. For purposes of this definition, "control" when used
with respect to any Person means the power to direct the management and policies
of such Person, directly or indirectly, whether through the ownership of voting
securities, by contract or otherwise, and the terms "controlling" and
"controlled" have meanings correlative to the foregoing.

                  1.2 Agreement. This Warrant Agreement, as the same may be
amended, modified or supplemented from time to time.

                  1.3 Business Day. A day which in New York, New York, is
neither a legal holiday nor a day on which banking institutions are authorized
by law or regulation to close.

                  1.4 Common Stock. The Company's ordinary shares, par value
$0.001 per share.

                  1.5 Company. Seven Seas Petroleum Inc. and its successors and
assigns.

<PAGE>

                  1.6 Company Order. A written request or order signed in the
name of the Company by an authorized officer and delivered to the Warrant Agent.

                  1.7 Convertible Securities. Any stock or securities (directly
or indirectly) convertible into or exchangeable for Common Stock.

                  1.8 Corporate Agency Office. The offices maintained by the
Warrant Agent and identified in accordance with paragraph 9 of this Agreement.

                  1.9 Current Market Price. With respect to any security: (a) if
the security is traded on an organized exchange or market for which sales price
information is updated, the average closing price 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 an organized
exchange or market, the price per share of the security as determined in good
faith by the Company's Board of Directors. If such valuation is objected to by
the Holders of over forty percent (40%) of the Warrants within ten (10) days
after notice of such valuation, then the valuation will be made by a reputable
investment bank of national standing selected by the Company, the expense of
which will be paid by the Company.

                  1.10 Effective Registration Statement. A registration
statement filed by the Company which has become effective under the Securities
Act.

                  1.11 Exercise Date. The date the Warrants first become
exercisable, which is the date the Registration Statement becomes effective.

                  1.12 Exercise Price. The purchase price per Warrant Share
payable on exercise of a warrant. The initial exercise price is $1.782995, and
is subject to adjustment as provided in paragraph 5 of this Agreement.

                  1.13 Exchange Act. The Securities Exchange Act of 1934, as
amended, and the rules and regulations promulgated thereunder.

                  1.14 Expiration Date. June 30, 2008.

                  1.15 Holder. Any Person in whose name any Warrant Certificate
is registered upon the Warrant Register.

                  1.16 Indenture. The Indenture dated as of July 23, 2001, by
and among the Company and U.S. Trust Company of Texas, N.A.

                  1.17 Non-Surviving Combination. Any merger, consolidation or
other business combination by the Company with one or more other entities in a
transaction in which the Company is not the surviving entity or becomes a
wholly-owned subsidiary of another entity.

                  1.18 Note. A 12% Series A Senior Secured Note due 2004 issued
pursuant to the Indenture.

                                      -2-
<PAGE>

                  1.19 Options. Any rights or options to subscribe for or
purchase Common Stock or Convertible Securities.

                  1.20 Person. Any individual, corporation (including a business
trust), partnership, joint venture, association, joint-stock company, trust,
estate, limited liability company, unincorporated association, unincorporated
organization, government or agency or political subdivision thereof or any other
entity.

                  1.21 Registrar. U.S. Trust Company of Texas, N.A., and its
successors and assigns.

                  1.22 Registration Statement. A Registration Statement as
contemplated by paragraph 4 of this Agreement.

                  1.23 Rule 144. Rule 144 promulgated under the Securities Act
or any successor rule.

                  1.24 SEC. The Securities and Exchange Commission or any
successor agency thereto.

                  1.25 Securities Act. The Securities Act of 1933, as amended,
and the rules and regulations promulgated thereunder.

                  1.26 Subsidiary. With respect to any Person, any corporation,
association or other business entity of which more than 50% of the total voting
power of equity interests entitled (without regard to the occurrence of any
contingency) to vote in the election of directors, managers or trustees thereof
is at the time owned or controlled, directly or indirectly, by such Person or
one or more of the Subsidiaries of such Person or a combination thereof.

                  1.27 Warrant Agent. The Person named in the preamble hereof or
the successor or successors of such Person appointed in accordance with the
terms hereof.

                  1.28 Warrant Certificates. Those certain warrant certificates
evidencing the Warrants, substantially in the form of Exhibit "A" attached as a
part hereof.

                  1.29 Warrant Register. The warrant register as contemplated by
paragraph 9 of this Agreement.

                  1.30 Warrant Shares. The Common Stock issuable upon exercise
of the Warrants, the number of shares of which is subject to adjustment from
time to time in accordance with paragraph 5.

                  1.31 Warrants. Those warrants issued hereunder to purchase
initially up to an aggregate of 12,619,500 Warrant Shares at the Exercise Price,
subject to adjustment pursuant to paragraph 5 of this Agreement.

                                      -3-
<PAGE>

         2. Warrants. The Warrants will be issued as follows:

                  2.1 Issuance of Warrants. Contemporaneously with the issuance
of each Note, the Warrant Agent will issue to the registered owner of the Note
one or more Warrant Certificates evidencing the requisite number of Warrants as
set forth on a list of registered holders of Notes furnished to the Warrant
Agent by the Registrar pursuant to Section 7.12 of the Indenture. Each Warrant
Certificate issued pursuant to this paragraph 2.1 will evidence the number of
Warrants equal to the following: (a) 56.08667; multiplied by (b) the number
obtained by (i) dividing the initial principal balance of the Notes specified as
held by the holder as set forth in the above list by (ii) One Hundred Dollars
($100.00), and (c) rounded to the nearest whole number. Subject to the terms of
this Agreement and the Warrant Certificate, each Warrant evidenced by the
Warrant Certificate will represent the right to purchase one Warrant Share,
subject to adjustment as provided in paragraph 5 of this Agreement.

                  2.2 Form, Denomination and Date of Warrants. Each of the
Warrant Certificates: (a) will be issued in substantially the form of Exhibit
"A" attached as a part hereof; (b) will be numbered, lettered or otherwise
distinguished in such manner as the Company may determine with the approval of
the Warrant Agent; and (c) will be dated as of the date of the authentication of
the Warrant Certificate. To the extent not inconsistent with the terms of this
Agreement, any of the Warrant Certificates may be issued with appropriate
insertions, omissions, substitutions, variations and legends as may be required
to comply with any state or federal law, rule or regulation, the rules of any
securities market in which the Warrants are admitted to trading or to otherwise
conform to general usage. All Warrant Certificates and the underlying Warrants
will be otherwise substantially identical except as to denomination and as
otherwise provided in this Agreement.

                  2.3 Execution and Delivery of Warrant Certificates. The
Warrant Certificates will be executed and delivered as follows:

                           2.3.1 Maximum Number. Warrant Certificates evidencing
Warrants which may be countersigned and delivered under this Agreement are
limited to: (a) Warrant Certificates evidencing Twelve Million Six Hundred
Nineteen Thousand Five Hundred (12,619,500) Warrants as adjusted in accordance
with paragraph 5 of this Agreement; and (b) additional Warrant Certificates
countersigned and delivered on registration, transfer, exchange or in lieu of
previously countersigned Warrant Certificates pursuant to this Agreement.

                           2.3.2 Execution. The Warrant Certificates will be
executed on behalf of the Company by an authorized officer of the Company,
either manually or by facsimile signature printed thereon. In addition to the
foregoing, the Warrant Certificates will be countersigned by the Warrant Agent
and will not be valid for any purpose unless so countersigned. After the date of
this Agreement, Warrant Certificates evidencing Warrants may be executed by the
Company and delivered to the Warrant Agent for countersignature. Thereafter on
receipt of a Company Order or at the direction of the Company as set forth in
this Agreement, the Warrant Agent will countersign and deliver such Warrant
Certificates to the Company for delivery or deliver such Warrant Certificate to
the Holder as directed by the Company. The Warrant Agent is further hereby
authorized to countersign and deliver Warrant Certificates as required by this
paragraph 2.3 or by paragraphs 2.2, 3.4, 5 or 9 of this Agreement. If an officer
of the Company whose

                                      -4-
<PAGE>

signature is placed on a Warrant Certificates ceases to be an officer before
countersignature and issuance of the Warrant Certificate by the Warrant Agent,
such Warrant Certificate may be countersigned by the Warrant Agent and delivered
with the same force and effect as though such Person were an officer of the
Company on the date of issuance of such Warrant Certificate. In addition at any
time after the date of this Agreement, Warrant Certificates may be signed on
behalf of the Company by an authorized officer as of the actual date of
execution of such Warrant Certificate regardless of whether such Person was an
officer of the Company on the date of the execution of this Agreement.

                  2.4 Transfer and Exchange. The Warrants will be transferable
as follows:

                           2.4.1 Transfer of Warrants. The Holder of a Warrant
may transfer all or part of such Warrant, subject to and in compliance with the
restrictions on transfer set forth in this Agreement and the applicable Warrant
Certificate. On receipt by the Warrant Agent at the Corporate Agency Office of:
(a) the Warrant Certificate, duly endorsed as provided herein for the number of
Warrants to be transferred; (b) written instructions from such Holder directing
the Warrant Agent to authenticate and deliver one or more Warrant Certificates
for the number of Warrants to be transferred; and (c) the identity, address and
tax identification number of each transferee, then the Warrant Agent will cancel
or cause to be canceled such Warrant Certificate and, concurrently therewith,
the Company will execute, and the Warrant Agent will authenticate and deliver,
one or more Warrant Certificates in accordance with the instructions referred to
above.

                           2.4.2 Expenses. No charge will be made to a Holder
for the transfer or exchange of Warrants hereunder. Notwithstanding the
foregoing, the Company may require payment of a sum sufficient to cover any tax
or other governmental charges that may be imposed in connection with any
transfer or exchange of the Warrants.

                           2.4.3 Identification. The Warrant Agent will use
CUSIP numbers in notices of repurchase or exchange as a convenience to Holders;
provided that any such notice may state that no representation is made as to the
correctness or accuracy of such numbers either as printed on the Warrants or as
contained in any notice of repurchase or exchange and that reliance may be
placed only on the other identification numbers printed on the Warrants. The
Company will promptly notify the Warrant Agent of any change in the CUSIP
numbers.

                  2.5 Temporary Securities. Pending the preparation of
definitive Warrants, the Company may execute and the Warrant Agent will
authenticate and deliver temporary Warrants (printed, lithographed, typewritten
or otherwise reproduced, in each case in form satisfactory to the Warrant
Agent). Temporary Warrants will be issuable as registered Warrants, of any
authorized denomination, and substantially in the form of the definitive
Warrants but with such omissions, insertions and variations as may be
appropriate for temporary Warrants, all as may be determined by the Company with
the concurrence of the Warrant Agent. Temporary Warrants may contain such
references to provisions of this Agreement as is appropriate. Every temporary
Warrant will be executed by the Company and be authenticated by the Warrant
Agent upon the same conditions and in substantially the same manner, and with
like effect, as the definitive Warrants. Without unreasonable delay, the Company
will execute and furnish definitive Warrants and thereupon temporary Warrants
may be surrendered in exchange therefor without

                                      -5-
<PAGE>

charge at the office of the Warrant Agent in accordance with paragraph 9 of this
Agreement. Until so exchanged, the temporary Warrants will be entitled to the
same benefits under this Agreement as definitive Warrants.

         3. Exercise and Expiration of Warrants. When validly issued and subject
to the provisions of the Warrant Certificate and this Agreement, each Warrant
Certificate will entitle the Holder thereof to acquire from the Company, subject
to the terms hereof (including Exhibit A hereto), for each Warrant evidenced
thereby, one Warrant Share at the Exercise Price, subject to the anti-dilution
adjustments under this Agreement. The Exercise Price and the number of Warrant
Shares to be received on exercise of the Warrants will be adjusted from time to
time as required by paragraph 5 of this Agreement.

                  3.1 Exercise of Warrants. Subject to the terms and conditions
of the Warrant Certificate and this Agreement, and subject to the Registration
Statement being effective and exercise not otherwise being suspended as provided
in paragraph 4 hereof, the Holder of a Warrant Certificate may on any Business
Day from and after the Exercise Date through and including the Expiration Date
exercise all or part of a whole number of the Warrants evidenced by the Warrant
Certificates for the Warrant Shares purchasable thereunder.

                  3.2 Expiration of Warrants. Unless sooner terminated as herein
provided, the Warrants will terminate and become void as of 5:00 p.m., New York
time on the Expiration Date. After Warrants representing fifty-one percent (51%)
or more of the number of Warrants originally issued pursuant to this Agreement
have been exercised, at any time that the closing price of the Company's Common
Stock on the principal stock exchange or market on which the Company's Common
Stock is traded has been not lower than $3.00 for more than twenty (20)
consecutive trading days, the Company may give the remaining Holders written
notice that they must exercise their Warrants within thirty (30) days after the
date of such notice or the Warrants will terminate and become void as of 5:00
p.m., New York time on the thirty-first (31st) day after the date of such
notice. In that event, the Holder may exercise all or any of the Warrants by
delivering to the Warrant Agent at the Corporate Agency Office duly executed
written notice of such Holder's election to exercise Warrants in the form set
forth on the reverse of, or attached to, the Warrant Certificate specifying the
number of Warrants to be exercised and the number of Warrant Shares to be
surrendered in payment of the aggregate Exercise Price for the Warrant Shares to
be delivered to the Holder; and (b) the Warrant Certificate evidencing such
Warrants. For purposes of this paragraph 3.2, each Warrant which is being
surrendered in payment of the aggregate Exercise Price will be attributed a
value equal to: (x) the Current Market Price per share of Common Stock less (y)
the current Exercise Price.

                  3.3 Method of Exercise. Subject to the terms of this
Agreement, including paragraph 4.2 hereof, the Holder may exercise all or any of
the Warrants by delivering to the Warrant Agent at the Corporate Agency Office:
(a) duly executed written notice of such Holder's election to exercise Warrants
in the form set forth on the reverse of, or attached to, the Warrant Certificate
specifying the number of Warrant Shares to be exercised; (b) the Warrant
Certificate evidencing such Warrants; and (c) an amount equal to the aggregate
Exercise Price for the Warrants being exercised by money order, certified check,
bank draft drawn upon a United States bank or wire transfer, rounded to the
nearest tenth of a cent.

                                      -6-
<PAGE>

                  3.4 Partial Exercise. If fewer than all the Warrants
represented by a Warrant Certificate are exercised, such Warrant Certificate
will be surrendered and a new Warrant Certificate of the same tenor and for the
number of Warrants which were not exercised will be executed by the Company. The
Warrant Agent will countersign the new Warrant Certificate registered in such
name or names as may be directed in writing by the Holder and deliver the new
Warrant Certificate to the Person or Persons in whose name such new Warrant
Certificate is registered. The Company will supply the Warrant Agent with
Warrant Certificates duly executed on behalf of the Company for such purpose.

                  3.5 Issuance of Warrant Shares. On surrender of a Warrant
Certificate evidencing Warrants in conformity with the foregoing provisions and
payment of the Exercise Price in respect of the exercise of one or more Warrants
evidenced thereby the Warrant Agent will: (a) deliver to the Company the notice
of exercise received pursuant to paragraph 3.3 of this Agreement; (b) deliver or
deposit all funds received as instructed by the Company; and (c) advise the
Company by telephone at the end of such day of the number of Warrants exercised
and the amount of funds received. On such exercise the Company will as promptly
as practicable, and in any event within five (5) Business Days after receipt by
the Company of written notice of exercise, execute or cause to be executed and
delivered or cause to be delivered to the Holder: (x) a stock certificate or
certificates representing the aggregate number of Warrant Shares purchased
pursuant to such exercise; (y) any new Warrant Certificate under paragraph 3.4
of this Agreement; and (z) any cash payment in lieu of any fractional share(s).
The certificate or certificates so delivered will be, to the extent possible, in
such denomination or denominations as such Holder requests in such notice of
exercise and will be registered or otherwise placed in the name of, and
delivered to, the Holder or such other Person as designated by the Holder in
such notice.

                  3.6 Time of Exercise. A Warrant will be deemed to have been
exercised immediately prior to the close of business on the date on which all
requirements set forth in paragraph 3.3 of this Agreement applicable to such
exercise have been satisfied. Certificate(s) evidencing the Warrant Shares
issued on the exercise of such Warrant will be deemed to have been issued and,
for all purposes of this Agreement, the recipient will be deemed to be and
entitled to all rights of the holder of record of such Warrant Shares as of such
time.

                  3.7 Application of Funds Upon Exercise of Warrants. Any funds
delivered to the Warrant Agent on exercise of any Warrants will be held by the
Warrant Agent in trust for the Company. The Warrant Agent will promptly deliver
and pay to or on the written order of the Company all funds received by it upon
the exercise of any Warrants by bank wire transfer to an account designated by
the Company or as the Warrant Agent otherwise may be directed in writing by the
Company.

                  3.8 Payment of Taxes. The Company will pay any and all taxes
(other than income taxes) and other charges that may be payable in respect of
the issue or delivery of Warrant Shares on exercise of Warrants. The Company
will not be required to pay any tax or other charge imposed as a result of a
transfer in connection with the issue and delivery of any certificates for
Warrant Shares or payment of cash to any Person other than the registered Holder
of the Warrant Certificate surrendered in the exercise of a Warrant. The Warrant
Agent and the Company will not be required to issue or deliver any certificate
or pay any cash until: (a) such

                                      -7-
<PAGE>

transfer tax or charge, if any, has been paid or an amount sufficient for the
payment thereof has been delivered to the Warrant Agent or the Company; or (b)
it has been established to the Company's satisfaction that any such transfer tax
or other charge that is or may become due has been paid.

                  3.9 Surrender of Certificates. Any Warrant Certificate
surrendered for exercise will be delivered to the Warrant Agent. All Warrant
Certificates surrendered to the Warrant Agent will be promptly canceled and the
Warrant Agent will deliver a certificate of destruction to the Company, unless
the Company requests otherwise.

                  3.10 Shares Issuable. The number of Warrant Shares issuable
upon exercise of Warrants will be the number of Warrant Shares into which such
Warrants are then exercisable. The number of Warrant Shares "into which each
Warrant is exercisable" initially will be one share, subject to adjustment as
provided in paragraph 5 of this Agreement.

         4. Registration Rights. The Company shall prepare and file with the SEC
a Registration Statement for an offering to be made on a continuous basis
pursuant to Rule 415 covering all of the Warrant Shares. The Registration
Statement shall be on Form S-3 or another appropriate form permitting
registration of the Warrant Shares for issuance by the Company upon exercise of
the Warrants.

                  4.1 Registration Procedures In connection with the filing of
the Registration Statement, the Company shall:

         (a) Use its best efforts to cause the Registration Statement to become
effective as soon as reasonably practicable after the Warrants are issued and to
keep such Registration Statement continuously effective under the Securities Act
until the earlier of (i) the Expiration Date, or (ii) the date on which all of
the Warrant Shares have been issued;

         (b) Furnish to Holders copies of the prospectus included in such
Registration Statement (including each prospectus supplement), in conformity
with the requirements of the Securities Act.

         (c) Use its reasonable best efforts to register or qualify the Warrant
Shares covered by such Registration Statement under such other securities or
blue sky laws of such jurisdictions as determined by the Company's counsel to be
necessary or required, and do such other acts and things as may be required to
enable Holders to exercise the Warrants in the jurisdictions for exercise of the
Warrants owned by Holders.

         (d) Otherwise use its reasonable best efforts to comply with all
applicable rules and regulations of the SEC.

         (e) Immediately notify the Holders at any time upon the Company
becoming aware that the prospectus included in the Registration Statement, or as
such prospectus may be amended or supplemented, includes an untrue statement of
a material fact or omits to state any material fact required to be stated
therein or necessary in order to make the statements therein not misleading in
light of the circumstances then existing, and promptly prepare and furnish to
Security Holders copies of an amended or supplemental prospectus to the Holders
as may be

                                      -8-
<PAGE>

necessary so that, as thereafter delivered upon exercise of the Warrants, such
prospectus shall not include an untrue statement of a material fact or omit to
state a material fact required to be stated therein or necessary in order to
make the statements therein not misleading in the light of the circumstances
then existing. In the event the Company shall give any such notice, the Holders
shall no longer be permitted to exercise the Warrants, and the Exercise Period
shall be extended by the number of days during the period from and including the
date of the giving of such notice to and including the date when Holders shall
have received the copies of such supplemented or amended prospectus.

         (f) Use its best efforts to list such Warrant Shares on the primary
securities exchange or other trading market on which the Common Stock is then
listed, if such Warrant Shares are not already so listed and if such listing is
then permitted under the rules of such exchange or other trading market, and to
provide a transfer agent and registrar for such Warrant Shares covered by such
Registration Statement not later than the effective date of such Registration
Statement.

                  4.2 Suspension of Exercise. In the event that, in the judgment
of the Company, it is advisable to suspend exercise of the Warrants by Holders
because the Company is conducting negotiations for a material business
combination or due to pending material developments or events that have not yet
been publicly disclosed and as to which the Company believes public disclosure
will be prejudicial to the Company, the Company shall deliver notice to the
Holders that exercise has been suspended and, thereafter, the Holders shall not
exercise the Warrants, and the Exercise Period shall cease to run or will not
commence, until Holders have received copies of the supplemented or amended
prospectus provided for in paragraph 4.1(e), or until it is advised in writing
by the Company that the prospectus may be used, and have received copies of any
additional or supplemental filings that are incorporated or deemed incorporated
by reference in such prospectus; provided that the duration of such suspension
shall not exceed 90 days. The Company will use its best efforts to ensure that
the use of the prospectus may be resumed, and the Exercise Period will commence,
as promptly as is practicable and, in any event, promptly after the earlier of
(x) public disclosure of such material business combination or pending material
development or event sufficient to permit an Affiliate of the Company to sell
Common Stock or (y) in the judgment of the Company, public disclosure of such
material business combination or material development or event would not be
prejudicial to the Company.

         5. Anti-Dilution Adjustments. In order to prevent dilution of the
rights granted with respect to the Warrants, the Exercise Price is subject to
adjustment from time to time as provided in this paragraph 5, and the number of
Warrant Shares obtainable on the exercise of a Warrant will be subject to
adjustment from time to time as provided in this paragraph 5.

                  5.1 Issuance of Common Stock. If and whenever on or after the
date of this Agreement the Company issues or sells, or in accordance with
paragraph 5.2 of this Agreement is deemed to have issued or sold, any shares of
Common Stock for a consideration per share less than the Exercise Price in
effect immediately prior to such time, then immediately upon such issue or sale
the Exercise Price will be reduced to the new Exercise Price determined by
dividing:

                                      -9-
<PAGE>

                           (a) the sum of (i) the product derived by multiplying
the Exercise Price in effect immediately prior to such issue or sale times the
number of shares of Common Stock deemed outstanding immediately prior to such
issue or sale, plus (ii) the consideration, if any, received by the Company upon
such issue or sale, by

                           (b) the number of shares of Common Stock deemed
outstanding immediately after such issue or sale.

Upon 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 determined by multiplying the Exercise Price in effect immediately prior
to such adjustment by the number of Warrant Shares acquirable on exercise of a
Warrant immediately prior to such adjustment and dividing the product thereof by
the Exercise Price resulting from such adjustment.

                  5.2 Effect on Exercise Price of Certain Events. For purposes
of determining the adjusted Exercise Price under paragraph 5.1, the following
will be applicable:

                           5.2.1 Issuance of Rights or Options. If the Company
in any manner grants or sells any Options and the price per share for which
Common Stock is issuable on the exercise of such Options, or on conversion or
exchange of any Convertible Securities issuable on the exercise of such Options,
is less than the Exercise Price in effect immediately prior to the time of the
granting or sale of such Options, then the total maximum number of shares of
Common Stock issuable on the exercise of such Options, or on 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 Company 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 Common Stock is issuable on exercise of such Options or upon
conversion or exchange of such Convertible Securities" is determined by dividing
(a) the total amount, if any, received or receivable by the Company as
consideration for the granting or sale of such Options, plus the minimum
aggregate amount of additional consideration payable to the Company 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 Company on the issuance or sale of such
Convertible Securities and the conversion or exchange thereof, by (b) the total
maximum number of shares of Common Stock issuable on exercise of such Options or
on the conversion or exchange of all such Convertible Securities issuable upon
the exercise of such Options. No further adjustment of the Exercise Price will
be made upon the actual issuance of such Common Stock or of such Convertible
Securities on the exercise of such Options or upon the actual issuance of Common
Stock on conversion or exchange of such Convertible Securities.

                           5.2.2 Issuance of Convertible Securities. If the
Company in any manner issues or sells any Convertible Securities and the price
per share for which Common Stock is 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 Common Stock issuable on
conversion or exchange of such Convertible Securities will be deemed to be
outstanding and to have been issued and sold by the Company at the time of the
issue or sale of such Convertible Securities for such price per share. For the
purposes of this paragraph, the

                                      -10-
<PAGE>

"price per share for which Common Stock is issuable on conversion or exchange
thereof" is determined by dividing (a) the total amount received or receivable
by the Company as consideration for the issue or sale of such Convertible
Securities, plus the minimum aggregate amount of additional consideration, if
any, payable to the Company on the conversion or exchange thereof, by (b) the
total maximum number of shares of Common Stock issuable upon the conversion or
exchange of all such Convertible Securities. No further adjustment of the
Exercise Price will be made upon the actual issue of such Common Stock upon
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 5.2, no further adjustment of the Exercise Price
will be made by reason of such issue or sale.

                           5.2.3 Change in Option Price or Conversion Rate. If
the purchase price provided for in any Options, the additional consideration, if
any, payable upon the issue, conversion or exchange of any Convertible
Securities, or the rate at which any Convertible Securities are convertible into
or exchangeable for Common Stock 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 Common
Stock issuable hereunder will be correspondingly adjusted. For purposes of this
paragraph 5.2, if the terms of any Option or Convertible Security which was
outstanding as of the date of this Agreement are changed in the manner described
in the immediately preceding sentence, then such Option or Convertible Security
and the Common Stock deemed issuable upon 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.

                           5.2.4 Expired Options and Unexercised Convertible
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
Common Stock 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 5.2, the expiration or termination
of any Option or Convertible Security which was outstanding as of the date of
issuance of this Agreement 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 Agreement.

                           5.2.5 Calculation of Consideration Received. If any
Common Stock, 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 Company therefor. In case any Common
Stock, Options or Convertible Securities are issued or sold for consideration
other than cash, the amount of the consideration other than cash received by the
Company will be the fair value of such consideration, except where such
consideration

                                      -11-
<PAGE>

consists of securities, in which case the amount of consideration received by
the Company will be the Current Market Price thereof as of the date of receipt.
In case any Common Stock, Options or Convertible Securities are issued to the
owners of the non-surviving entity in connection with any merger in which the
Company 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 Common Stock, 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 Company consistent with the value assigned for
Generally Accepted Accounting Principles purposes. Notice of such determination
will be given to the Warrant Agent and the Holders.

                           5.2.6 Integrated Transactions. In case any Option or
Convertible Security is issued in connection with the issue or sale of other
securities of the Company, 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 Company consistent with the value
assigned for purposes of Generally Accepted Accounting Principles. Notice of
such determination will be given to the Warrant Agent and the Holders.

                           5.2.7 Treasury Shares. The number of shares of Common
Stock outstanding at any given time does not include shares of Common Stock
owned or held by or for the account of the Company or any Subsidiary, and the
disposition of any shares so owned or held will be considered an issue or sale
of Common Stock.

                           5.2.8 Record Date. If the Company takes a record of
the holders of Common Stock for the purpose of entitling them (a) to receive a
dividend or other distribution payable in Common Stock, Options or in
Convertible Securities or (b) to subscribe for or purchase Common Stock, Options
or Convertible Securities, then such record date will be deemed to be the date
of the issue or sale of the shares of Common Stock 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.

                  5.3 Stock Splits and Reverse Splits. In the event that the
Company at any time after the date of this Agreement subdivides its outstanding
shares of Common Stock 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 pursuant to this Warrant immediately prior
to such subdivision will be proportionately increased. Conversely, in the event
that the outstanding shares of Common Stock 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 upon the exercise of this
Warrant immediately prior to such combination will be proportionately reduced.

                  5.4 Reorganizations and Asset Sales. If any capital
reorganization or reclassification of the capital stock of the Company, or any
consolidation, merger or share exchange of the Company with another Person, or
the sale, transfer or other disposition of all or

                                      -12-
<PAGE>

substantially all of its assets to another Person will be effected in such a way
that a holder of Common Stock of the Company will be entitled to receive capital
stock, securities or assets with respect to or in exchange for shares of Common
Stock, then the following provisions will apply:

                           5.4.1 Reorganization or Reclassification. If any
capital reorganization or reclassification of the capital stock of the Company
shall be effected in such a way that holders of Common Stock shall be entitled
to receive stock or securities or assets of the Company with respect to or in
exchange for Common Stock, then the Holder of each Warrant then outstanding
shall have the right upon exercise to receive the kind and amount of stock,
securities or asserts receivable upon reorganization or reclassification by a
holder of the number of shares of Common Stock which such Holder would have
received had the Holder exercised the Warrant immediately prior to such
reorganization or reclassification.

                           5.4.2 Consolidation; Merger, Etc. Immediately prior
to the effective time of any consolidation, merger, share exchange, sale,
transfer or other disposition with another Person, the Warrants shall be
cancelled and each holder of Warrants will thereafter have the right to receive,
in lieu of the Warrant Shares immediately theretofore receivable upon 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 Common Stock equal to the number of
Warrant Shares which the Holder would have received had the Holder made a
cashless exercise by surrendering a number of Warrants with an attributed value
equal to (x) the Current Market Price per share of Common Stock less (y) the
current Exercise Price such that the aggregate attributed value of the
surrendered Warrants is equal to the Exercise Price of the remaining Warrants.

                  5.5 Certain Events. If any event occurs of the type
contemplated by the provisions of this paragraph 5 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 Company's board of directors will make an appropriate adjustment in the
Exercise Price and the number of shares of Common Stock obtainable upon exercise
of the Warrants so as to protect the rights of the holders of the Warrants. No
such adjustment will increase the Exercise Price or decrease the number of
shares of Common Stock obtainable as otherwise determined pursuant to this
paragraph 5.

                  5.6 Notice of Adjustment. Whenever the Exercise Price or the
number of Warrant Shares issuable upon 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 Company 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 upon
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 upon which such adjustments or
other changes are based. The Company will promptly cause to be mailed to each
Holder copies of such officer's certificate together with a notice stating that
the Exercise Price and the number of Warrant Shares purchasable upon exercise of
the Warrants have been adjusted and setting forth the adjusted Exercise Price
and the adjusted number of Warrant Shares purchasable upon the exercise of the
Warrants.

                                      -13-
<PAGE>

                  5.7 Notices to Holders. In case at any time the Company
proposes:

                           5.7.1 to declare any dividend upon its Common Stock
payable in capital stock or make any dividend or other distribution (including
cash dividends) to the holders of its Common Stock;

                           5.7.2 to offer for subscription pro rata to all of
the holders of its Common Stock any additional shares of capital stock of any
class or other rights;

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

                           5.7.4 to effect a voluntary or involuntary
dissolution, liquidation or winding up of the Company, then, in any one or more
of such cases, the Company will give the holder hereof (a) at least 20 days'
(but not more than 90 days') prior written notice of the date on which the books
of the Company 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 20 days' (but not more than 90 days') prior written notice of the date
when the same will take place. Such notice in accordance with the foregoing
clause (a) will also specify, in the case of any such dividend, distribution or
subscription rights, the date on which the holders of Common Stock will be
entitled thereto, and such notice in accordance with the foregoing clause (b)
will also specify the date on which the holders of Common Stock will be entitled
to exchange their Common Stock, as the case may be, for securities or other
property deliverable upon such reorganization, reclassification, consolidation,
merger, share exchange, sale, transfer, disposition, dissolution, liquidation or
winding up, as the case may be.

                  5.8 Exceptions to Anti-Dilution Adjustment. Notwithstanding
anything to the contrary contained in this Agreement, there will be no
adjustment in the Exercise Price or the number of Warrant Shares obtainable upon
exercise of the Warrants as a consequence of the issuance by the Company of (a)
any Option, warrant, Convertible Security or other right to acquire Common Stock
outstanding or in effect as of the date of this Agreement and not amended after
the date of this Agreement; (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 Common Stock on exercise of Options
granted or that may be granted under the Company'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 nineteen
thousand five hundred (12,619,500) of the warrants to be issued by the Company
to Chesapeake Energy Corporation; or (d) the issuance of shares of Common Stock
as a result of the exercise of any of the foregoing. The number of shares of
Common Stock exempted from the anti-dilution adjustments under foregoing clause
(b) assumes that no such Options have been

                                      -14-
<PAGE>

exercised and as a result will be reduced for any Options issued under the
Company's 1995, 1996 and 1997 stock option plans which were exercised prior to
the date of this Agreement.

         6. Loss or Mutilation. Upon: (a) receipt by the Company and the Warrant
Agent of evidence satisfactory to them of the ownership of and the loss, theft,
destruction or mutilation of any Warrant Certificate and such security or
indemnity as may be required by them to save each of them harmless; and (b)
surrender, in the case of mutilation, of the mutilated Warrant Certificate to
the Warrant Agent and cancellation thereof, then, in the absence of notice to
the Company of the Warrant Agent that the Warrants evidenced thereby have been
acquired by a bona fide purchaser, the Company will execute and on written
request the Warrant Agent will countersign and deliver to the registered Holder
of the lost, stolen, destroyed or mutilated Warrant Certificate, in exchange
therefor or in lieu thereof, a new Warrant Certificate of the same tenor and for
a like aggregate number of Warrants. At the written request of such registered
Holder, the new Warrant Certificate so issued will be retained by the Warrant
Agent as having been surrendered for exercise, in lieu of delivery thereof to
such Holder, and will be deemed for purposes of this Agreement to have been
surrendered for exercise on the date the conditions specified in clauses (a) and
(b) of the preceding sentence were first satisfied. Upon the issuance of any new
Warrant Certificate under this paragraph 6, the Company may require the payment
of a sum sufficient to cover any tax or governmental charge that may be imposed
in relation thereto and other expenses (including the fees and expenses of the
Warrant Agent and of counsel to the Company) in connection therewith. Every new
Warrant Certificate executed and delivered pursuant to this paragraph 6 in lieu
of any lost, stolen or destroyed Warrant Certificate will constitute an
additional contractual obligation of the Company, whether or not the allegedly
lost, stolen or destroyed Warrant Certificate will be at any time enforceable by
anyone, and will be entitled to the benefits of this Agreement equally and
proportionately with any and all other Warrant Certificates duly executed and
delivered hereunder. The provisions of this paragraph 6 are exclusive and will
preclude (to the extent lawful) all other rights and remedies with respect to
the replacement of mutilated, lost, stolen or destroyed Warrant Certificates.

         7. Capitalization. As of the date of this Agreement: the Company's
authorized capital stock consists of one hundred fifty million (150,000,000)
shares of Common Stock and fifty million (50,000,000) shares which may be
designated by the board of directors of the Company, none of which have been
designated or issued. As of the date of this Agreement 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 shares of Common Stock
duly issued and outstanding; (b) twelve million six hundred nineteen thousand
five hundred (12,619,500) shares of Common Stock reserved for issuance as a
result of the issuance of warrants to Chesapeake Energy Corporation (the
"Chesapeake Warrants"); (c) twelve million six hundred nineteen thousand five
hundred (12,619,500) shares of Common Stock reserved for issuance on exercise of
the Warrants; and (d) five million three hundred fifty-six thousand eight
hundred eighty-eight (5,356,888) shares of Common Stock issuable on exercise of
Options granted or to be granted under the Company's 1995, 1996 and 1997 stock
option plans. The Warrant Shares reserved for issuance represent no less than
twenty percent (20%) of the Company's fully diluted shares of Common Stock which
as of the date of this Agreement includes all of the issued and outstanding
shares of Common Stock, any shares of Common Stock issuable under this
Agreement, the maximum number of shares of Common Stock issuable in connection
with the Chesapeake

                                      -15-
<PAGE>

Warrants and any other Options or Convertible Securities, excluding only shares
of Common Stock issuable upon the exercise of Options issued under the Company's
1995, 1996 and 1997 compensatory stock option plans.

         8. Reservation and Authorization of Warrant Shares. The Company will at
all times reserve and keep available, free from preemptive rights, solely for
issue upon the exercise of Warrants such number of its authorized but unissued
Warrant Shares deliverable upon the exercise of Warrants as will be sufficient
to permit the exercise in full of all outstanding Warrants. The Company
covenants that all Warrant Shares will, at all times that Warrants are
exercisable, be duly approved for listing subject to official notice of issuance
on each securities exchange, if any, on which the Common Stock are then listed.
The Company covenants that all Warrant Shares that may be issued on exercise of
Warrants will upon issuance be duly authorized, validly issued and fully paid
and nonassessable and free of preemptive or similar rights. The Company hereby
authorizes and directs its current and future transfer agents for the Common
Stock at all times to reserve stock certificates for such number of authorized
shares as will be requisite for such purpose. The Warrant Agent is hereby
authorized to requisition from time to time from any such transfer agents stock
certificates required to honor outstanding Warrants on exercise thereof in
accordance with the terms of this Agreement, and the Company hereby authorizes
and directs such transfer agents to comply with all such requests of the Warrant
Agent. The Company will supply such transfer agents with duly executed stock
certificates for such purposes.

         9. Warrant Transfer Books. The Warrant Agent will maintain an office in
the United States of America, where Warrant Certificates may be surrendered for
registration of transfer or exchange and where Warrant Certificates may be
surrendered for exercise of Warrants evidenced thereby, which office is located
at 2001 Ross Avenue, Suite 2700, Dallas, Texas, 75201, Attention: John
Stohlmann, on the date of this Agreement. The Warrant Agent will give prompt
written notice to all Holders of any change in the location of such office. The
Warrant Certificates evidencing the Warrants will be issued in registered form
only. The Company will cause to be kept at the office of the Warrant Agent
designated for such purpose the Warrant Register for the registration of Warrant
Certificates and of transfers or exchanges of Warrant Certificates as provided
in this Agreement and subject to such reasonable regulations as the Warrant
Agent may prescribe and such regulations as may be prescribed by law. Subject to
paragraph 2.4 of this Agreement, on surrender for registration of the transfer
of any Warrant Certificate at the Corporate Agency Office, the Company will
execute, and the Warrant Agent will countersign and deliver, in the name of the
designated transferee or transferees, one or more new Warrant Certificates
evidencing a like aggregate number of Warrants. Subject to paragraph 2.4: (a) at
the option of the Holder, Warrant Certificates may be exchanged at the office of
the Warrant Agent on payment of the charges hereinafter provided for other
Warrant Certificates evidencing a like number of Warrants; and (b) whenever any
Warrant Certificates are so surrendered for exchange, the Company will execute
and the Warrant Agent will countersign and deliver Warrant Certificates of the
same tenor and evidencing the same number of Warrants as evidenced by the
Warrant Certificates surrendered by the Holder. All Warrant Certificates issued
on any registration or exchange of Warrant Certificates will be the valid
obligations of the Company, evidencing the same obligations, and entitled to the
same benefits under this Agreement, as the Warrant Certificates surrendered for
such registration of transfer or exchange. Subject to paragraph 2.4 of this
Agreement, every Warrant Certificate surrendered for

                                      -16-
<PAGE>

registration of transfer or exchange will (if so required by the Company or the
Warrant Agent) be duly endorsed, or be accompanied by a written instrument of
transfer in form satisfactory to the Company and the Warrant Agent, duly
executed by the Holder thereof. The Warrant Agent will, on request of the
Company from time to time, deliver to the Company such reports of registered
ownership of the Warrants and such records of transactions with respect to the
Warrants and the Warrant Shares as the Company may request. The Warrant Agent
will also make available to the Company for inspection by the Company's agents
or employees, from time to time as the Company may request, such original books
and accounts and records maintained by the Warrant Agent in connection with the
issuance and exercise of Warrants hereunder, such inspections to occur at the
Corporate Agency Office during normal business hours. The Warrant Agent will
keep copies of this Agreement and any notices given to Holders hereunder
available for inspection by the Holders during normal business hours at the
Corporate Agency Office. The Company will supply the Warrant Agent from time to
time with such numbers of copies of this Agreement as the Warrant Agent may
request.

         10. Warrant Holders. The Holders will have the following rights and
obligations:

                  10.1 Voting or Dividend Rights. Except as provided in this
Agreement, prior to the exercise of the Warrants: (a) a Holder will not be
entitled to any of the rights of a holder of Common Stock with respect to the
Warrant Shares, including, without limitation, the right to vote at or to
receive any notice of any meetings of stockholders; (b) the consent of any
Holder will not be required with respect to any action or proceeding of the
Company; (c) no Holder, by reason of the ownership or possession of a Warrant or
the Warrant Certificate representing the same, will have any right to receive
any stock dividends of the Company prior to, or for which the relevant record
date preceded, the date of the exercise of such Warrant; and (d) no Holder will
have any right not expressly conferred by this Agreement or the Warrant
Certificate held by such Holder.

                  10.2 Rights of Action. All rights of action against the
Company in respect of this Agreement, except rights of action vested in the
Warrant Agent, are vested in the Holders. A Holder may enforce and may institute
and maintain any suit, action or proceeding against the Company suitable to
enforce, or otherwise in respect of, such Holder's rights to exercise, exchange
or tender for purchase such Holder's Warrants in the manner provided in this
Agreement without the consent of the Company, the Warrant Agent or any other
Holder.

                  10.3 Treatment of Holders. By the acceptance of a Warrant
Certificate each Holder consents and agrees with the Company, the Warrant Agent
and subsequent holders of such Warrant Certificate that, prior to due
presentment of such Warrant Certificate for registration of transfer, the
Company and the Warrant Agent may treat the Person in whose name the Warrant
Certificate is registered as the owner thereof for all purposes and as the
Person entitled to exercise the rights granted under the Warrants, and neither
the Company, the Warrant Agent nor any agent thereof will be affected or bound
by any notice to the contrary.

                  10.4 Communications to Holders. If any Holder notifies the
Warrant Agent in writing that the Holder desires to communicate with other
Holders with respect to its rights under this Agreement or under the Warrants,
the Warrant Agent will provide to such applicant a list of the names and
addresses of all Holders as of the most recent practicable date within five (5)

                                      -17-
<PAGE>

Business Days after receipt of such notice and payment to the Warrant Agent by
such Holder of the reasonable expenses of preparing such list. Each Holder by
acceptance of a Warrant Certificate agrees that the Company, the Warrant Agent
and any agent of the foregoing will not be held accountable by reason of the
disclosure of such information in accordance with this paragraph 10.4.

         11. Warrant Agent.

                  11.1 Nature of Duties and Responsibilities Assumed. The
Company hereby appoints the Warrant Agent to act as agent of the Company as set
forth in this Agreement. The Warrant Agent hereby accepts the appointment as
agent of the Company and agrees to perform that agency upon the terms and
conditions set forth in this Agreement and in the Warrant Certificates or as the
Company and the Warrant Agent may hereafter agree. The parties agree that the
terms and conditions set forth in the Warrant Certificates are subject to and
governed by this Agreement or any other terms and conditions hereafter agreed to
by the Company and the Warrant Agent. The Warrant Agent will not, by
countersigning Warrant Certificates or by any other act hereunder, be deemed to
make any representations as to validity or authorization of: (a) the Warrants or
the Warrant Certificates (except as to its countersignature thereon); (b) any
securities or other property delivered upon exercise of any Warrant; (c) the
accuracy of the computation of the number, kind or amount of stock or other
securities or other property deliverable upon exercise of any Warrant; or (d)
the correctness of any of the representations of the Company made in any
certifications that the Warrant Agent receives. The Warrant Agent will not at
any time have any duty to calculate or determine whether any facts exist that
may require any adjustments pursuant to paragraph 5 of this Agreement. The
Warrant Agent will not have the duty or responsibility to determine the accuracy
or correctness of any such calculation or the methods employed in making the
same. The Warrant Agent makes no representation and will not be accountable with
respect to the validity or value (or the kind or amount) of any Warrant Shares
or of any securities or property which may at any time be issued or delivered on
the exercise of any Warrant or upon any adjustment pursuant to paragraph 5 of
this Agreement. The Warrant Agent will not be responsible for any failure of the
Company to make any cash payments or to issue, transfer or deliver any Warrant
Shares or stock certificates or other securities or property on the surrender of
any Warrant Certificate for the purpose of exercise or on any adjustment
pursuant to paragraph 5 of this Agreement. The Warrant Agent will not: (x) be
liable for any recital or statement of fact contained herein or in the Warrant
Certificates or for any action taken, offered or omitted by it in good faith on
the belief that any Warrant Certificate or any other documents or any signatures
are genuine or properly authorized; (y) be responsible for any failure by the
Company to comply with any of its covenants and obligations contained in this
Agreement or in the Warrant Certificates; or (z) be liable for any act or
omission in connection with this Agreement except for its own gross negligence,
bad faith or willful misconduct. The Warrant Agent is hereby authorized to
accept and is protected in accepting instruments with respect to the performance
of its duties hereunder by Company Order and to apply to any such officer named
in such Company Order for instructions (which instructions will be promptly
given in writing when requested), and the Warrant Agent will not be liable for
any action taken or suffered to be taken by it in good faith in accordance with
the instructions in any Company Order. The Warrant Agent is hereby authorized to
accept and is protected in accepting, and may rely upon without otherwise
verifying, the list of registered holders and related information furnished by
the Registrar for the purpose of determining those holders who

                                      -18-
<PAGE>

are entitled to receive Warrant Certificates, and the Warrant Agent will not be
liable for any action taken or suffered to be taken by it in good faith in
reliance upon such lists and information furnished by the Registrar. The Warrant
Agent may execute and exercise any of the rights and powers hereby vested in it
or perform any duty hereunder either itself or by and through its attorneys,
agents or employees, provided that reasonable care has been exercised in the
selection and in the continued employment of any such attorney, agent or
employee. The Warrant Agent will not be under any obligation or duty to
institute, appear in or defend any action, suit or legal proceeding in respect
of this Agreement, unless first indemnified to its satisfaction, but this
provision will not affect the power of the Warrant Agent to take such action as
the Warrant Agent may consider proper, whether with or without such indemnity.
The Warrant Agent will promptly notify the Company in writing of any claim made
or action, suit or proceeding instituted against it arising out of or in
connection with this Agreement. The Company will perform, execute, acknowledge
and deliver or cause to be performed, executed, acknowledged and delivered all
such further acts, instruments and assurances as may reasonably be required by
the Warrant Agent in order to enable it to carry out or perform its duties under
this Agreement. The Warrant Agent will act solely as agent of the Company
hereunder and does not assume any obligation or relationship of agency or trust
for or with any of the Holders or any beneficial owners of Warrants. The Warrant
Agent will not be liable except for the failure to perform such duties as
specifically set forth herein or specifically set forth in the Warrant
Certificates, and no implied covenants or obligations will be read into this
Agreement against the Warrant Agent whose duties and obligations will be
determined solely by the express provisions hereof or the express provisions of
the Warrant Certificates.

                  11.2 Right to Consult Counsel. The Warrant Agent may at any
time consult with legal counsel satisfactory to it (who may be legal counsel for
the Company), and the Warrant Agent will incur no liability or responsibility to
the Company or to any Holder for any action taken, suffered or omitted by it in
good faith in accordance with the written opinion or advice of such counsel.

                  11.3 Compensation, Reimbursement and Indemnification. The
Company agrees to pay the Warrant Agent reasonable compensation for the Warrant
Agent's service hereunder as the Company and the Warrant Agent may agree and to
reimburse the Warrant Agent for all reasonable expenses and disbursements
(including reasonable counsel fees and expenses) incurred in connection with the
execution and administration of this Agreement. The Company further agrees to
indemnify the Warrant Agent for and save it harmless against any losses,
liabilities or reasonable expenses arising out of or in connection with the
acceptance and administration of this Agreement, including the reasonable costs,
legal fees and expenses of investigating or defending any claim of such
liability, except that the Company will have no liability hereunder to the
extent that any such loss, liability or expense results from the gross
negligence, bad faith or willful misconduct of the Warrant Agent and the Warrant
Agent's officers, directors, employees and agents.

                  11.4 Warrant Agent May Hold Company Securities. The Warrant
Agent, any countersigning agent and any stockholder, director, officer or
employee of the foregoing may buy, sell or deal in any of the Warrants or other
securities of the Company or its Affiliates, become pecuniarily interested in
transactions in which the Company or its Affiliates may be interested, contract
with or lend money to the Company or its Affiliates or otherwise act as fully

                                      -19-
<PAGE>

and freely as though it were not the Warrant Agent. Nothing herein will preclude
the Warrant Agent or any countersigning agent from acting in any other capacity
for the Company or for any other legal entity.

                  11.5 Resignation and Removal; Appointment of Successor. The
Warrant Agent may resign on thirty (30) days prior written notice to the
Company. The Company may remove the Warrant Agent on thirty (30) days prior
written notice. On such resignation or termination the Warrant Agent will be
discharged from all further duties and liabilities under this Agreement (except
liability arising as a result of the Warrant Agent's own gross negligence, bad
faith or willful misconduct). The Warrant Agent will, at the expense of the
Company, cause notice to be given to each Holder of such notice of resignation
or removal. On such resignation or removal, the Company will appoint in writing
a new Warrant Agent. If the Company fails to make such appointment within a
period of thirty (30) calendar days after it has been notified in writing of
such resignation by the resigning Warrant Agent or after such removal, then any
Holder may apply to any court of competent jurisdiction in the United States for
the appointment of a new Warrant Agent. Any new Warrant Agent appointed under
this paragraph will be a corporation doing business under the laws of the United
States or any state thereof in good standing, authorized under such laws to act
as a Warrant Agent, and in the business of acting as transfer agent for publicly
held securities. After acceptance in writing of such appointment in writing, the
new Warrant Agent will be vested with the same powers, rights, duties and
responsibilities as if it had been originally named as the Warrant Agent under
this Agreement, without any further assurance, conveyance, act or deed. However,
if for any reason it will be necessary or expedient to execute and deliver any
further assurance, conveyance, act or deed, the same will be done at the
reasonable expense of the Company and will be legally and validly executed and
delivered by the resigning or removed Warrant Agent. No later than the effective
date of any such appointment, the Company will file notice thereof with the
resigning or removed Warrant Agent. Failure to give the notice provided for in
this paragraph 11.5 (or any defect therein), will not affect the legality or
validity of the resignation or removal of the Warrant Agent or the appointment
of a new Warrant Agent. Any corporation into which the Warrant Agent or any new
Warrant Agent may be merged, or any corporation resulting from any consolidation
to which the Warrant Agent or any new Warrant Agent is a party, will be a
successor Warrant Agent under this Agreement without any further act, provided
that such corporation would be eligible for appointment as successor to the
Warrant Agent under the provisions of this paragraph 11.5. Any such successor
Warrant Agent will promptly cause notice of its succession as Warrant Agent to
be given to each Holder at such Holder's last address as shown on the Warrant
Register.

                  11.6 Appointment of Countersigning Agent. The Warrant Agent
may appoint one or more countersigning agents which will be authorized to act on
behalf of the Warrant Agent to countersign Warrant Certificates and Warrant
Certificates so countersigned will be entitled to the benefits of this Agreement
equally and proportionately with any and all other Warrant Certificates duly
executed and delivered hereunder. Wherever reference is made in this Agreement
to the countersignature and delivery of Warrant Certificates by the Warrant
Agent or to Warrant Certificates countersigned by the Warrant Agent, such
reference will be deemed to include countersignature and delivery on behalf of
the Warrant Agent by a countersigning agent and Warrant Certificates
countersigned by a countersigning agent. Each countersigning agent will be
acceptable to the Company and will at the time of appointment be a corporation
doing business under the laws of the United States of America or any state
thereof in good standing,

                                      -20-
<PAGE>

authorized under such laws to act as countersigning agent, and have a combined
capital and surplus of not less than $100,000,000.00. The combined capital and
surplus of any such new countersigning agent will be deemed to be the combined
capital and surplus as set forth in the most recent annual report of its
condition published by such countersigning agent prior to its appointment,
provided that such reports are published at least annually pursuant to law or to
the requirements of a federal or state supervising or examining authority. Any
corporation into which a countersigning agent may be merged, or any corporation
resulting from any consolidation to which such countersigning agent is a party,
will be a successor countersigning agent without any further act, provided that
such corporation would be eligible for appointment as a new countersigning agent
under the provisions of this paragraph 11.6, without the execution or filing of
any paper or any further act on the part of the Warrant Agent or the
countersigning agent. Any such successor countersigning agent will promptly
cause notice of its succession as countersigning agent to be given to each
Holder at such Holder's last address as shown on the Warrant Register. The
countersigning agent may resign at any time by giving thirty (30) days prior
written notice thereof to the Warrant Agent and to the Company. The Warrant
Agent may at any time terminate the agency of a countersigning agent by giving
thirty (30) days prior written notice thereof to such countersigning agent and
to the Company. The Warrant Agent agrees to pay to each countersigning agent
from time to time reasonable compensation for its services under this paragraph,
and the Warrant Agent will be entitled to be reimbursed for such payments,
subject to the provisions of paragraph 11.3 this Agreement. Any countersigning
agent will have the same rights and immunities as those of the Warrant Agent set
forth in paragraph 11.1 of this Agreement.

         12. Miscellaneous.

                  12.1 Notices Generally. Any request, notice, direction,
authorization, consent, waiver, demand or other communication permitted or
authorized by this Agreement to be made upon, given or furnished to or filed
with the Company or the Warrant Agent by the other party hereto or by any Holder
will be sufficient for every purpose under this Agreement if in writing
(including telecopy communication) and telecopied or delivered by hand
(including by courier service) as follows:

                  If to the Company:          Seven Seas Petroleum Inc.
                                              5555 San Felipe
                                              Suite 1700
                                              Houston, Texas  77056
                                              Attn: President

                  If to the Warrant Agent:    U.S. Trust Company of Texas, N.A.
                                              2001 Ross Avenue, Suite 2700
                                              Dallas, Texas  75201
                                              Attn:  John Stohlmann

or, in either case, such other address as set forth in a notice delivered in
accordance with this paragraph 12.1. All such communications will, when so
telecopied or delivered by hand, be effective when telecopied with confirmation
of receipt or received by the addressee, respectively. Any person that
telecopies any communication hereunder to any Person will, on the same date as

                                      -21-
<PAGE>

such telecopy is transmitted, also send, by first-class mail, postage prepaid
and addressed to such Person as specified above, an original copy of the
communication so transmitted. Where this Agreement provides for notice to
Holders of any event, such notice will be sufficiently given (unless otherwise
herein expressly provided) if in writing and mailed, first-class postage
prepaid, to each Holder affected by such event, at the address of such Holder as
it appears in the Warrant Register, not later than the latest date, and not
earlier than the earliest date, prescribed for the giving of such notice. In any
case where notice to Holders is given by mail, neither the failure to mail such
notice, nor any defect in any notice so mailed, to any particular Holder will
affect the sufficiency of such notice with respect to other Holders. Where this
Agreement provides for notice in any manner, such notice may be waived in
writing by the Person entitled to receive such notice, either before or after
the event, and such waiver will be equivalent of such notice. In case of the
suspension of regular mail service or by reason of any other cause it will be
impracticable to give such notice by mail, then such notification as will be
made by a method approved by the Warrant Agent as one which would be most
reliable under the circumstances for successfully delivering the notice to the
addressees will constitute a sufficient notification for every purpose
hereunder.

                  12.2 APPLICABLE LAW. THIS AGREEMENT, EACH WARRANT CERTIFICATE
ISSUED HEREUNDER, EACH WARRANT EVIDENCED THEREBY AND ALL RIGHTS ARISING
HEREUNDER WILL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE
STATE OF OKLAHOMA, WITHOUT GIVING EFFECT TO PRINCIPLES OF CONFLICTS OF LAW TO
THE EXTENT THE APPLICATION OF THE LAW OF ANOTHER JURISDICTION WOULD BE REQUIRED
THEREBY.

                  12.3 Persons Benefitting. This Agreement will be binding upon
and inure to the benefit of the Company, the Warrant Agent, the Holders and
their respective successors and assigns. Nothing in this Agreement is intended
or will be construed to confer upon any Person, other than the Company, the
Warrant Agent and the Holders, any right, remedy or claim under or by reason of
this Agreement or any part hereof. Each holder, by acceptance of a Warrant
Certificate, agrees to all of the terms and provisions of this Agreement
applicable thereto.

                  12.4 Counterparts. This Agreement may be executed in any
number of counterparts, each of which will for all purposes be deemed to be an
original, and all such counterparts will together constitute but one and the
same instrument.

                  12.5 Amendments. The Company and the Warrant Agent may,
without the consent or concurrence of the Holders of the Warrant Certificates,
by supplemental agreement or otherwise, amend this Agreement for the purpose of
making any changes or corrections in this Agreement that: (a) are required to
cure any ambiguity or to correct or supplement any defective or inconsistent
provision or clerical omission or mistake or manifest error herein contained;
(b) add to the covenants and agreements of the Company in this Agreement further
covenants and agreements of the Company thereafter to be observed; or (c)
surrender any rights or powers reserved to or conferred upon the Company in this
Agreement. Notwithstanding the foregoing, in either case such amendment will not
adversely affect the rights or interests of the Holders in any material respect.
This Agreement may otherwise be amended by the Company and the Warrant Agent
only with the consent of the Holders of a majority of the then outstanding

                                      -22-
<PAGE>
Warrants. Notwithstanding the foregoing, consent of each Holder of a Warrant
affected will be required for any amendment pursuant to which the Exercise Price
would be increased or the number of Warrant Shares purchasable upon exercise of
Warrants would be decreased (other than pursuant to adjustments provided
herein). The Warrant Agent will join with the Company in the execution and
delivery of any such amendment unless such amendment affects the Warrant Agent's
own rights, duties or immunities hereunder, in which case the Warrant Agent may,
but will not be required to, join in such amendment. Upon execution and delivery
of any amendment pursuant to this paragraph 12.5, such amendment will be
considered a part of this Agreement for all purposes and every Holder of a
Warrant Certificate theretofore or thereafter countersigned and delivered
hereunder will be bound thereby. Promptly after the execution by the Company and
the Warrant Agent of any such amendment, the Company will give notice to the
Holders setting forth in general terms the substance of such amendment. However,
any failure of the Company to mail such notice or any defect therein, will not
in any way impair or affect the validity of any such amendment.

                  12.6 Inspection. The Warrant Agent will cause a copy of this
Agreement to be available at all reasonable times at the Corporate Agency Office
for the Warrant Agent for inspection by the Holder of any Warrant Certificate.
The Warrant Agent may require such Holder to submit his Warrant Certificate for
inspection by the Holder.

                  12.7 Entire Agreement. This Agreement sets forth the entire
agreement of the parties hereto as to the subject matter hereof and supersedes
all previous agreements among all or some of the parties hereto with respect
thereto, whether written, oral or otherwise.

                  12.8 Headings. The descriptive headings of the paragraphs of
this Agreement are inserted for convenience and will not control or affect the
meaning or construction of any of the provisions hereof.

                  IN WITNESS WHEREOF, the parties hereto have caused this
Agreement to be duly executed and delivered as of the day and year first above
written.

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

                         By  /s/ LARRY A. RAY
                           ---------------------------------------------------
                         Name:  Larry A. Ray
                               -----------------------------------------------
                         Title: President
                                ----------------------------------------------

                         U.S. TRUST COMPANY OF TEXAS, N.A.

                         By  /s/ BILL BARBER
                           ---------------------------------------------------
                         Name: Bill Barber
                               -----------------------------------------------
                         Title:  Vice President
                                ----------------------------------------------

                                      -23-

<PAGE>

                          [Form of Warrant Certificate]

                                                        VOID AFTER JUNE 30, 2008

                            SEVEN SEAS PETROLEUM INC.

               Warrant for the Purchase of Shares of Common Stock,
                           par value $0.001 per share

Warrant No:_____________
CUSIP No. 817917 11 5
ISIN No.:  KY817917 11 51

                  THIS CERTIFIES that, for value received,_____________________,
with an address at _______________________________ (including any registered
assignee, the "Holder"), is entitled to subscribe for and purchase from Seven
Seas Petroleum Inc., a Cayman Islands exempted company limited by shares (the
"Company"), upon the terms and conditions set forth herein and the Master
Warrant Agreement dated ________, 2001 (the "Warrant Agreement") between the
Company and U.S. Trust Company of Texas, N.A. (the "Warrant Agent"), at any time
and from time to time from the Exercise Date (as defined in the Warrant
Agreement) until 5:00 P.M. on June 30, 2008, New York time (the "Exercise
Period"), __________ of the Company's common shares, par value $0.001 per share
(the "Common Stock"), at $1.782955 per share (the "Exercise Price").

                  This Warrant Certificate and each Warrant represented hereby
are issued pursuant to and are subject in all respects to the terms and
conditions set forth in the Warrant Agreement.

                  The Warrants may be exercised by the Holder, in whole or in
part, at any time and from time to time during the Exercise Period upon
presentation and surrender of this Warrant Certificate, with the exercise form
attached hereto duly executed, at the corporate office of the Warrant Agent at
2001 Ross Avenue, Suite 2700, Dallas, Texas 75201, Attention: John Stohlmann,
accompanied by payment of the full Exercise Price for the Warrants in lawful
money of the United States of America in cash or by certified or bank check made
payable to the Company, as more fully described in the Warrant Agreement.

                  In the event of certain contingencies provided for in the
Warrant Agreement, the Exercise Price and the number of shares of Common Stock
subject to purchase upon the exercise of each Warrant represented hereby are
subject to modification or adjustment.

                  Each Warrant represented hereby is exercisable at the option
of the Holder, but no fractional shares will be issued. In the case of the
exercise of less than all the Warrants represented hereby, the Company shall
cancel this Warrant Certificate upon the surrender hereof and shall execute and
deliver a new Warrant Certificate or Warrant Certificates of like tenor, which
the Warrant Agent shall countersign, for the balance of such Warrants.

                  The Company shall not be obligated to deliver any securities
pursuant to the exercise of the Warrants represented hereby unless at the time
of exercise (i) the Company has

<PAGE>

filed with the Securities and Exchange Commission a registration statement under
the Securities Act of 1933, as amended (the "Act"), covering the securities
issuable upon exercise of the Warrants represented hereby and such registration
statement has been declared and shall remain effective and shall be current, and
such securities have been registered or qualified or be exempt under the
securities laws of the state or other jurisdiction of residence of the Holder
and the exercise of the Warrants represented hereby in any such state or other
jurisdiction shall not otherwise be unlawful, or (ii) the Company has received
an opinion of counsel to the Holder, which counsel and opinion are reasonably
satisfactory to the Company, that such securities may be issued in the manner
contemplated without an effective registration statement under the Act or
applicable state securities laws.

                  Prior to the exercise of any Warrant represented hereby, the
Holder, as such, shall not be entitled to any rights of a stockholder of the
Company, including, without limitation, the right to vote or to receive
dividends or other distributions, and shall not be entitled to receive any
notice of any proceedings of the Company, except as provided in the Warrant
Agreement.

                  Prior to due presentment for registration of transfer hereof,
the Company and the Warrant Agent may deem and treat the Holder as the absolute
owner hereof and of each Warrant represented hereby (notwithstanding any
notations of ownership or writing hereon made by anyone other than a duly
authorized officer of the Company or the Warrant Agent) for all purposes and
shall not be affected by any notice to the contrary, except as provided in the
Warrant Agreement.

                  This Warrant Certificate shall be governed by and construed in
accordance with the laws of the State of Oklahoma without regard to the
conflicts of law principles thereof.

                  This Warrant Certificate is not valid unless countersigned by
the Warrant Agent.

Dated                     , 2001
      -------------- -----
                                            SEVEN SEAS PETROLEUM INC.

                                            By:
                                               ---------------------------------
                                               President
Attest:

By:
   -------------------------------
   Secretary

COUNTERSIGNED:

U.S. TRUST COMPANY OF TEXAS, N.A.,
     as Warrant Agent

By:
   -------------------------------
   Authorized officer

<PAGE>

                                  EXERCISE FORM

                  The undersigned hereby irrevocably exercises the right to
purchase __________________ shares of Common Stock of Seven Seas Petroleum Inc.,
a Cayman Islands exempted company limited by shares, evidenced by the attached
Warrant Certificate, and herewith makes payment of the Exercise Price with
respect to such shares in full in the form of [wire transfer, cash or check] in
the amount of $_______, all in accordance with the conditions and provisions of
the Warrant Agreement and the attached Warrant Certificate.

                  The undersigned requests that stock certificates for such
Warrant Shares be issued, and a Warrant Certificate representing any unexercised
portion hereof be issued in the name of the registered Holder and delivered to
the undersigned at the address set forth below.

                  Dated:
                         -------------------------------------

                                      ------------------------------------------
                                      Signature of Registered Holder

                                      ------------------------------------------
                                      Name of Registered Holder (Print)

                                      Address of Registered Holder (Print):

                                      --------------------------------

                                      --------------------------------

                                      --------------------------------

                                      --------------------------------
                                      Social Security or Taxpayer
                                      Identification Number

<PAGE>

                                 ASSIGNMENT FORM

       To be Executed by the Registered Holder in Order to Assign Warrants

         FOR VALUE RECEIVED, ____________________________, hereby sells, assigns
and transfers unto

       --------------------------------

       --------------------------------

       --------------------------------
       (please print or type name, social
       security number and address)

__________________________________ of the Warrants represented by this Warrant
Certificate, and hereby irrevocably constitutes and appoints
____________________ as its/his/her attorney-in-fact to transfer this Warrant
Certificate on the books of the Company, with full power of substitution in the
premises.

Dated:

                                      ------------------------------------------
                                      Signature of Registered Holder

                                      ------------------------------------------
                                      Name of Registered Holder (Print)

                                      Address of Registered Holder (Print):

                                      --------------------------------

                                      --------------------------------

                                      --------------------------------

                                      ------------------------------------------
                                      Signature Guaranty

                                      --------------------------------
                                      Social Security or Taxpayer
                                      Identification Number

THE SIGNATURE TO THE ASSIGNMENT OR THE EXERCISE FORM MUST CORRESPOND TO THE NAME
AS WRITTEN UPON THE FACE OF THE ATTACHED WARRANT CERTIFICATE IN EVERY
PARTICULAR, WITHOUT ALTERATION OR ENLARGEMENT OR ANY CHANGE WHATSOEVER AND MUST
BE GUARANTEED BY A BANK, BROKER, DEALER, CREDIT UNION, SAVINGS ASSOCIATION OR
OTHER ENTITY WHICH IS A MEMBER IN GOOD STANDING OF THE SECURITIES TRANSFER
AGENTS MEDALLION PROGRAM.

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