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                                                                     EXHIBIT 4.1

                      CERTIFICATE OF RIGHTS AND PREFERENCES
                                       OF
                      SERIES C CONVERTIBLE PREFERRED STOCK
                                       OF
                             NEWPARK RESOURCES, INC.

         Pursuant to Section 151(g) of the Delaware General Corporation Law,
NEWPARK RESOURCES, INC., a corporation organized and existing under the laws of
the State of Delaware (the "Company"), hereby certifies that the following
resolution was duly adopted by the Board of Directors of the Company on December
27, 2000, pursuant to authority conferred upon the Board of Directors by the
Certificate of Incorporation of the Company, which authorizes the issuance of up
to 1,000,000 shares of preferred stock, $0.01 par value.

         RESOLVED, that pursuant to authority expressly granted to and vested in
the Board of Directors of the Company and pursuant to the provisions of the
Certificate of Incorporation, the Board of Directors hereby creates a series of
preferred stock, herein designated and authorized as the Series C Convertible
Preferred Stock, $0.01 par value per share, which shall consist of 120,000 of
the 1,000,000 shares of preferred stock which the Company now has authority to
issue, and the Board of Directors hereby fixes the powers, designations,
preferences and relative, participating, optional and other special rights of
the shares of such series, and the qualifications, limitations and restrictions
thereof as follows:

         1. Number. The number of shares constituting the Series C Convertible
Preferred Stock (the "Series C Preferred Stock") shall be 120,000.

         2. Definitions. Unless the context otherwise requires, when used herein
the following terms shall have the meaning indicated.

         "Acquiring Person" means, in connection with any Business Combination,
the continuing or surviving corporation of a consolidation or merger with the
Company (if other than the Company), the transferee of substantially all of the
properties or assets of the Company, the corporation consolidating with or
merging into the Company in a consolidation or merger in connection with which
the Common Stock is changed into or exchanged for stock or other securities of
any other Person or cash or any other property, or, in the case of a capital
reorganization or reclassification, the Company.

         "Acquisition Price" means (i) the Market Price of the Common Stock on
the date immediately preceding the date on which a Business Combination is
consummated, or (ii) if a purchase, tender or exchange offer is made by the
Acquiring Person (or by any of its affiliates) to the holders of the Common
Stock and such offer is accepted by the holders of more than 50% of the
outstanding shares of Common Stock, the greater of (x) the price determined in
accordance with the provisions of the foregoing clause (i) of this sentence and
(y) the Market Price on the date immediately preceding the acceptance of such
offer by the holders of more than 50% of the outstanding shares of Common Stock.

         "Board" means the Board of Directors of the Company.

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         "Business Combination" is defined in Section 6(E)(i).

         "Business Day" means any day except Saturday, Sunday and any day which
shall be a legal holiday or a day on which banking institutions in New York, New
York, or New Orleans, Louisiana generally are authorized or required by law or
other governmental actions to close.

         "Capital Stock" means (i) with respect to any Person that is a
corporation, any and all shares, interests, participations or other equivalents
(however designated) of capital or capital stock of such Person and (ii) with
respect to any Person that is not a corporation, any and all partnership or
other equity interests of such Person.

         "Certificate" means the Certificate of Incorporation of the Company, as
amended.

         "Certificate of Rights and Preferences" means this Certificate of
Rights and Preferences of the Series C Preferred Stock.

         "Common Stock" means the Company's common stock, par value $.01 per
share, and any Capital Stock for or into which such Common Stock hereafter is
exchanged, converted, reclassified or recapitalized by the Company or pursuant
to a Business Combination to which the Company is a party.

         "Common Stock Equivalents" means (without duplication with any other
Common Stock or common stock, as the case may be, or Common Stock Equivalents)
rights, warrants, options, convertible securities or exchangeable securities,
exercisable for or convertible or exchangeable into, directly or indirectly,
Common Stock, or common stock, as the case may be, whether at the time of
issuance or upon the passage of time or the occurrence of some future event.

         "Company" means Newpark Resources, Inc. a Delaware corporation.

         "Conversion Price" means, on any date, the average of the daily Market
Prices of the Common Stock for the period of forty Trading Days ending and
excluding five Trading Days before and excluding that date, but no less than
$4.3125 (the "Floor Price") and no greater than the lowest of the following: (i)
$11.2125 (the "Ceiling Price"); (ii) the average of the daily Market Prices of
the Common Stock for the first three Trading Days of that forty day period; and
(iii) the average of the daily Market Prices of the Common Stock for the last
three Trading Days of that forty day period. The foregoing notwithstanding, if
the Company shall combine, subdivide or reclassify its Common Stock, or shall
declare any dividend payable in shares of its Common Stock, or shall take any
other action of a similar nature affecting such shares, the Conversion Price,
the Floor Price and the Ceiling Price shall be adjusted to the extent
appropriate to reflect such event, including appropriate adjustments to account
for any such event that occurs during any of the measurement periods set forth
in the previous sentence.

         "Conversion Rate" means the Stated Value of one share of Series C
Preferred Stock plus accrued and unpaid dividends divided by the Conversion
Price.

         "Dividend Payment Date" is defined in Section 3(A).

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         "Dividend Period" is defined in Section 3(A).

         "Dividend Rate" means a rate equal to 4.5% per annum times the Stated
Value, payable quarterly commencing February 28, 2001.

         "Exchange Act" means the Securities Exchange Act of 1934, as amended,
or any successor statute, and the rules and regulations promulgated thereunder.

         "Fletcher" means Fletcher International, Ltd., a company organized
under the laws of Bermuda, together with its successors.

         "Holder" means a holder of record of the Series C Preferred Stock.

         "Indenture" means the Indenture dated as of December 17, 1997, among
the Company, the "Guarantors," as defined in the Indenture, and State Street
Bank and Trust Company, a Massachusetts banking and trust company, as Trustee,
with respect to the Company's 8 5/8% Senior Subordinated Notes due 2007.

         "Investment Banking Firm" shall mean a nationally recognized investment
banking firm.

         "Issue Date" means with respect to any shares of Series C Preferred
Stock the original date of issuance of such shares of Series C Preferred Stock.

         "Junior Securities" means Capital Stock that, with respect to dividends
and distributions upon Liquidation, ranks junior to the Series C Preferred
Stock, including but not limited to Common Stock and any other class or series
of Capital Stock issued by the Company or any Subsidiary of the Company on or
after the Issue Date (other than the Series C Preferred Stock and any Parity
Securities and Senior Securities issued with the approval of the Holders of a
Majority of the Series C Preferred Stock).

         "Liquidation" means the voluntary or involuntary liquidation,
dissolution or winding up of the Company; provided, however, that a
consolidation, merger or share exchange shall not be deemed a Liquidation, nor
shall a sale, assignment, conveyance, transfer, lease or other disposition by
the Company of all or substantially all of its assets, which does not involve a
distribution by the Company of cash or other property to the holders of Common
Stock, be deemed to be a Liquidation.

         "Liquidation Preference" is defined in Section 4.

         "Main Agreement" means the Agreement dated as of December 27, 2000,
among the Company and Fletcher pursuant to which 120,000 shares of Series C
Preferred Stock and certain other securities are to be issued by the Company,
including all schedules and exhibits thereto.

         "Majority of the Series C Preferred Stock" means more than 50% of the
then outstanding shares of Series C Preferred Stock.

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         "Market Price" means, on any date, the amount per share of the Common
Stock (or, for purposes of determining the Market Price of the common stock of
an Acquiring Person or its Parent under Section 6(E), the common stock of such
Acquiring Person or such Parent), equal to (i) the daily volume-weighted average
price on the NYSE (as defined in the Main Agreement) or, if no such sale takes
place on such date, the average of the closing bid and asked prices on the NYSE
thereof on such date, in each case as reported by Bloomberg, L.P. (or by such
other Person as the Holder and the Issuer may agree), or (ii) if such Common
Stock is not then listed or admitted to trading on the NYSE, the higher of (x)
the book value thereof as determined by any firm of independent public
accountants of recognized standing selected by the Board of Directors of the
Issuer as of the last day of any month ending within 60 days preceding the date
as of which the determination is to be made or (y) the fair value thereof
determined in good faith by the Board of Directors of the Issuer as of a date
which is within 18 days of the date as of which the determination is to be made.

         "NYSE" shall have the meaning set forth in the Main Agreement.

         "Other Securities" means any stock (other than Common Stock) and other
securities of the Company or any other Person (corporate or otherwise) which the
Holders of the Series C Preferred Stock at any time shall be entitled to
receive, or shall have received, upon conversion of the Series C Preferred Stock
in lieu of or in addition to Common Stock, or which at any time shall be
issuable or shall have been issued in exchange for or in replacement of Common
Stock or Other Securities.

         "Parent" means, as to any Acquiring Person any corporation which (i)
controls the Acquiring Person directly or indirectly through one or more
intermediaries, (ii) is required to include the Acquiring Person in the
consolidated financial statements contained in such Parent's Annual Report on
Form 10-K (if the Parent is required to file such a report) and (iii) is not
itself included in the consolidated financial statements of any other Person
(other than its consolidated subsidiaries).

         "Parity Securities" means the Series B Preferred Stock (which ranks
pari passu with the Series C Preferred Stock with respect to both dividends and
distributions upon Liquidation) and any other class or series of Capital Stock
that, with respect to dividends or distributions upon Liquidation, ranks pari
passu with the Series C Preferred Stock.

         "Person" means an individual or a corporation, partnership, trust,
incorporated or unincorporated association, limited liability company, joint
venture, joint stock company, government (or an agency or political subdivision
thereof) or other entity of any kind.

         "Record Date" is defined in Section 3(A).

         "Registered Common Stock" means Common Stock that has been registered
under the Securities Act and is freely tradable.

         "Securities Act" means the Securities Act of 1933, as amended, or any
successor statute, and the rules and regulations promulgated thereunder.

         "Senior Securities" means the Series A Preferred Stock (which ranks
senior to the Series C Preferred Stock with respect to both dividends and
distributions upon Liquidation) and any other

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class or series of Capital Stock that, with respect to dividends or
distributions upon Liquidation, ranks senior to the Series C Preferred Stock.

         "Series A Preferred Stock" means the Series A Cumulative Perpetual
Preferred Stock of the Company the powers, designations, preferences and
relative, participating, optional and other special rights of which are
specified in a Certificate of Designation filed in the office of the Secretary
of State of Delaware on April 14, 1999.

         "Series B Preferred Stock" means the Series B Convertible Preferred
Stock of the Company the powers, designations, preferences and relative,
participating, optional and other special rights of which are specified in a
Certificate of Rights and Preferences of Series B Convertible Preferred Stock
filed in the office of the Secretary of State of Delaware on May 31, 2000.

         "Series C Preferred Stock" means the Series C Convertible Preferred
Stock of the Company or successor as contemplated by Section 6(E)(ii) as well as
any series of preferred stock of the Company issued under Section 6(b) of the
Main Agreement.

         "Stated Value" is an amount equal to $250.00 per share of Series C
Preferred Stock.

         "Subsidiary" of a Person means (i) a corporation, a majority of whose
stock with voting power, under ordinary circumstances, to elect directors is at
the time of determination, directly or indirectly, owned by such Person or by
one or more Subsidiaries of such Person, or (ii) any other entity (other than a
corporation) in which such Person or one or more Subsidiaries of such Person,
directly or indirectly, at the date of determination thereof has at least a
majority ownership interest.

         "Trading Day" means any day on which the Common Stock is quoted on the
NYSE.

         The foregoing definitions will be equally applicable to both the
singular and plural forms of the defined terms.

         3. Dividends and Distributions.

            (A) After payment or provision for all unpaid dividends on the
         Series A Preferred Stock and any other Senior Securities that rank
         senior to the Series C Preferred Stock with respect to dividends, the
         Holders shall be entitled to receive out of the assets of the Company
         legally available for that purpose, dividends at the Dividend Rate, and
         no more, to be paid in accordance with the terms of this Section 3.
         Such dividends shall be fully cumulative from the Issue Date, shall
         accumulate regardless of whether the Company earns a profit and shall
         be payable in arrears, when and as declared by the Board, on February
         28, May 31, August 31 and November 30 of each year (each such date
         being herein referred to as a "Dividend Payment Date"), commencing on
         February 28, 2001. The period from the Issue Date to February 28, 2001,
         and each quarterly period between consecutive Dividend Payment Dates
         shall hereinafter be referred to as a "Dividend Period." The dividend
         for any Dividend Period for any share of Series C Preferred Stock that
         is not outstanding on every day of the Dividend Period shall be
         prorated based on the number of days such share was outstanding during
         the period. Each such dividend shall be paid to the holders of record
         of the Series C

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         Preferred Stock as their names appear on the share register of the
         Company on the corresponding Record Date. As used above, the term
         "Record Date" means, with respect to the dividend payable on February
         28, May 31, August 31 and November 30, respectively, of each year, the
         preceding February 15, May 15, August 15 and November 15, or such other
         record date designated by the Board with respect to the dividend
         payable on such respective Dividend Payment Date not exceeding 30 days
         preceding such Dividend Payment Date. Dividends on account of arrears
         for any past Dividend Periods may be declared and paid at any time,
         without reference to any Dividend Payment Date, to Holders of record on
         a date designated by the Board, not exceeding 30 days preceding the
         payment date thereof, as may be fixed by the Board. For purposes of
         determining the amount of dividends accrued (i) as of the first
         Dividend Payment Date and as of any date that is not a Dividend Payment
         Date, such amount shall be calculated on the basis of the Dividend Rate
         for the actual number of days elapsed from and including the Issue Date
         (in case of the first Dividend Payment Date and any date prior to the
         first Dividend Payment Date) or the last preceding Dividend Payment
         Date (in case of any other date) to the date as of which such
         determination is to be made, based on a 360-day year of twelve 30-day
         months and (ii) as of any Dividend Payment Date after the first
         Dividend Payment Date, such amount shall be calculated on the basis of
         such Dividend Rate based on a 360-day year of twelve 30-day months. The
         Company shall have the right to withhold from any such dividend such
         amounts as are required to be withheld pursuant to applicable federal,
         state, local or foreign tax laws.

            (B) Dividends payable on the Series C Preferred Stock may be paid,
         at the option of the Company, either in cash or by the issuance of
         Registered Common Stock, provided, however, that the Company's right to
         pay dividends on any Dividend Payment Date by the issuance of
         Registered Common Stock shall continue only so long as at least one of
         the following conditions exists: (x) the payment in cash of the
         dividend payable on such Dividend Payment Date would violate the terms
         of the Indenture; or (y) the Company shall have obtained the Required
         Consent (as defined in the Main Agreement); or (z) the number of shares
         of Common Stock issued and issuable under the Main Agreement (including
         one year of dividends from such Dividend Payment Date, assuming that
         all such dividends will be paid in shares of Common Stock as they
         accrue) and all previously issued shares of Common Stock and all
         unconverted shares of Series C Preferred Stock on an as-converted and
         as-exercised basis as of that date) does not exceed 17.5% of the
         Original Number (as defined in the Main Agreement), or, if such number
         of shares exceeds 17.5% of the Original Number and does not exceed
         19.99% of the Original Number, the Company has notified its
         stockholders of a stockholder's meeting for the purpose of voting on a
         Required Consent in accordance with the Main Agreement and has used and
         is using its best efforts to obtain the Required Consent. Subject to
         the foregoing, payments on any Dividend Payment Date shall be made in
         Registered Common Stock unless the Company notifies the Holders in
         writing of its intention to pay cash on or before (but no more than
         fifteen days before) the immediately preceding Dividend Payment Date.
         The number of shares of Registered Common Stock to be issued shall be
         determined by dividing the cash amount of the dividend otherwise
         payable by the average of the daily Market Prices of the Common Stock
         for the five Trading Days ending on and including the third Trading Day
         before the designated payment date of such dividend; provided, however,
         if the Company shall combine, subdivide or reclassify its Common Stock,
         or shall declare any dividend payable in shares of its

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         Common Stock, or shall take any other action of a similar nature
         affecting such shares, the number of shares of Registered Common Stock
         to be issued shall be adjusted to the extent appropriate to reflect
         such event, including appropriate adjustments to account for any such
         event that occurs during the period of five Trading Days set forth in
         the previous sentence. The number of shares of Registered Common Stock
         to be issued as a dividend shall be rounded to the nearest whole share
         after aggregating all shares of Series C Preferred Stock owned by a
         Holder.

            (C) If, on any Dividend Payment Date, the Company fails to pay
         dividends, then until the dividends that were scheduled to be paid on
         such date are paid, such dividends shall cumulate and shall accrue
         additional dividends to and including the date of payment thereof at
         the Dividend Rate then in effect, compounded quarterly on each
         subsequent Dividend Payment Date. Unpaid dividends for any period less
         than a full Dividend Period shall cumulate on a day-to-day basis and
         shall be computed on the basis of a 360-day year of twelve 30-day
         months.

            (D) So long as any shares of the Series C Preferred Stock shall be
         outstanding, (i) the Company shall not and shall not allow its
         Subsidiaries to declare or pay any dividend whatsoever, whether in
         cash, property or otherwise, set aside any cash or property for the
         payment of dividends, or make any other distribution on any Junior
         Securities (except a dividend or distribution payable in shares of
         Common Stock), (ii) the Company shall not and shall not allow its
         Subsidiaries to declare or pay any dividend whatsoever, whether in
         cash, property or otherwise, set aside any cash or property for the
         payment of dividends, or make any other distribution on any Parity
         Securities (except for the Series B Preferred Stock and except a
         dividend or distribution payable in shares of Common Stock), except for
         dividends paid to the Company or any of its wholly-owned Subsidiaries
         and (iii) the Company shall not and shall not allow its Subsidiaries to
         repurchase, redeem or otherwise acquire for value or set aside any cash
         or property for the repurchase or redemption of any Junior Securities
         or Parity Securities other than as the Company may be contractually
         obligated as of the date of this Agreement, which obligations were
         disclosed in writing to Fletcher before the date of the Main Agreement,
         unless in each such case all dividends to which the Holders of the
         Series C Preferred Stock shall have been entitled to receive for all
         previous Dividend Periods shall have been paid.

         4. Liquidation Preference. In the event of any Liquidation, after
payment or provision for payment by the Company of the debts and other
liabilities of the Company and the liquidation preference of the Series A
Preferred Stock and any other Senior Securities that rank senior to the Series C
Preferred Stock with respect to distributions upon Liquidation, each Holder
shall be entitled to receive an amount in cash for each share of the then
outstanding Series C Preferred Stock held by such Holder equal to the Stated
Value per share plus an amount equal to all accrued but unpaid dividends
thereon, whether or not earnings are available in respect of such dividends or
such dividends have been declared, to and including the date full payment is
tendered to the Holders with respect to such Liquidation and no more (such
amount being referred to herein as the "Liquidation Preference") before any
distribution shall be made to the holders of any Junior Securities (and any
Senior Securities or Parity Securities that, with respect to distributions upon
Liquidation, rank junior to the Series C Preferred Stock) upon the Liquidation
of the Company. In case the assets of the

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Company available for payment to the Holders are insufficient to pay the full
Liquidation Preference on all outstanding shares of the Series C Preferred Stock
and all outstanding shares of Parity Securities and Senior Securities that, with
respect to distributions upon Liquidation, are pari passu with the Series C
Preferred Stock in the amounts to which the holders of such shares are entitled,
then the entire assets of the Company available for payment to the Holders and
to the holders of such Parity Securities and Senior Securities shall be
distributed ratably among the Holders of the Series C Preferred Stock and the
holders of such Parity Securities and Senior Securities, based upon the
aggregate amount due on such shares upon Liquidation. Written notice of any
Liquidation of the Company, stating a payment date and the place where the
distributable amounts shall be payable, shall be given by facsimile and
overnight delivery not less than ten days prior to the payment date stated
therein, to the Holders of record of the Series C Preferred Stock, if any, at
their respective addresses as the same shall appear on the books of the Company.

         5. Voting Rights. The Holders shall have the following voting rights
with respect to the Series C Preferred Stock:

            (A) Each share of Series C Preferred Stock shall entitle the
         holder thereof to the voting rights specified in Sections 5(B), 5(C),
         5(D) and 5(E) and no other voting rights except as required by law.

            (B) Whenever, at any time or times, dividends payable on the
         Series C Preferred Stock shall be in arrears in an aggregate amount
         greater than (2) quarterly dividends, there shall be vested in the
         Holders, voting as a separate class and with one vote for each share,
         the right, at their option, to elect and appoint to the Board of
         Directors of the Company, and the Company shall otherwise take
         appropriate action as necessary to permit the inclusion on the Board of
         Directors of, a number of persons (not to be less than a minimum of one
         designee) designated by the Holders such that, following such election,
         such designees represent a percentage of the total members of the Board
         of Directors (assuming no vacancies) that most nearly approximates
         (regardless of any limits imposed by the 65 Day Notice and Issuance
         Blockage restrictions) the proportion that (i) the sum of (A) the total
         number of then outstanding shares of Series C Preferred Stock
         (calculated on an as-if-converted to Common Stock basis as of the date
         such election is held as if such date were the Conversion Date) plus
         (B) the total number of then outstanding shares of Common Stock held by
         such Holders bears to (ii) the total outstanding shares of the voting
         capital stock of the Company (including outstanding shares of Series C
         Preferred Stock, calculated on an as-if-converted to Common Stock
         basis). Such right of the Holders to vote for the election of a
         director or directors may be exercised, at their option, at any annual
         meeting or at any special meeting called for such purpose, or at any
         adjournment thereof, until all arrearages in dividends on the
         outstanding shares of Series C Preferred Stock shall have been paid in
         full, and when so paid, then all rights of the Holders under this
         Section 5(B) shall cease until the next such arrearage, if any. So long
         as such right to vote continues, upon written request of the Holders of
         ten percent (10%) or more of the outstanding Series C Preferred Stock
         addressed to the Company at the address set forth in the Main
         Agreement, the Secretary of the Company shall call a special meeting of
         the Holders for the election of such director or directors as provided
         herein.

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                  (C) Such meeting shall be held within twenty (20) days after
         delivery of such request to such Secretary, at the place and upon the
         notice provided by law and in the Bylaws of the Company for the holding
         of meetings of its stockholders. If such notice of meeting is not given
         within ten (10) days of the request described in the prior sentence,
         the Holders of Series C Preferred Stock requesting such meeting may
         also call such meeting or may act by written consent and for such
         purposes shall have access to the stock books and records of the
         Company. At any meeting so called or at any other meeting held while
         the Holders of shares of Series C Preferred Stock shall have the voting
         power provided in Section 5(B), the Holders of a majority of the shares
         of Series C Preferred Stock present in person or by proxy or voting by
         written consent, shall be sufficient to constitute a quorum of the
         Holders for the election of directors as herein provided. If at any
         such meeting or any adjournment thereof the Holders of at least a
         majority of the then outstanding shares of Series C Preferred Stock
         then entitled to vote in such election shall be present or represented
         by proxy or acting by written consent, then, by vote (or action by
         written consent) of the Holders of at least the majority of all such
         shares of Series C Preferred Stock present or represented in such
         meeting, the then authorized number of directors of the Company shall
         be increased by the number necessary to allow all directors elected by
         the Holders to be seated (less any vacancies then existing on the
         Board) and the Holders of such shares of Series C Preferred Stock shall
         be entitled to elect such additional director or directors (or fill
         such vacancy or vacancies).

                  (D) The director or directors so elected shall serve until the
         next annual meeting of the Company's stockholders for the election of
         directors or until his or her successor(s) shall be elected and shall
         qualify; provided, however, that whenever all arrearages in dividends
         on all outstanding shares of Series C Preferred Stock shall have been
         paid, the term of office of the person(s) so elected as director(s)
         shall forthwith terminate, and, if the size of the Board shall have
         been increased as provided herein, the number of the whole Board shall
         be reduced accordingly. If any director so elected by the Holders shall
         cease to serve as director before his or her term shall expire, the
         Holders, at a special meeting of such Holders called as provided above,
         may elect a successor to hold office for the unexpired term of such
         director.

                  (E) The consent of the Holders of at least a Majority of the
         Series C Preferred Stock, voting separately as a single class with one
         vote per share, in person or by proxy, either in writing without a
         meeting or at an annual or a special meeting of such Holders called for
         the purpose, shall be necessary to:

                           (i) amend, alter or repeal, by way of merger or
                  otherwise, any of the provisions of the Certificate, including
                  the Certificate of Rights and Preferences, or Bylaws of the
                  Company so as to:

                                    (A) change any of the rights, preferences or
                           privileges of Holders. Without limiting the
                           generality of the preceding sentence, such change
                           includes any action that would:

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                                             (1) Reduce the dividend rates on
                                    the Series C Preferred Stock, or make such
                                    dividends non-cumulative, or defer the date
                                    from which dividends will accrue, or cancel
                                    accrued and unpaid dividends, or change the
                                    relative seniority rights of the holders of
                                    Series C Preferred Stock as to the payment
                                    of dividends in relation to the holders of
                                    any other capital stock of the Company;

                                             (2) Reduce the amount payable to
                                    the holders of the Series C Preferred Stock
                                    upon the voluntary or involuntary
                                    liquidation, dissolution, or winding up of
                                    the Company, or change the relative
                                    seniority of the liquidation preferences of
                                    the holders of the Series C Preferred Stock
                                    to the rights upon liquidation of the
                                    holders of any other capital stock of the
                                    Company;

                                             (3) Make the Series C Preferred
                                    Stock redeemable at the option of the
                                    Company; or

                                             (4) Change the authorized number of
                                    directors of the Company at any time when
                                    the Holders of shares of Series C Preferred
                                    Stock have the voting power provided in
                                    Section 5(B).

                                    (B) authorize, create or issue any shares of
                           Parity Securities or Senior Securities (or amend the
                           provisions of any existing class of Capital Stock to
                           make such class of Capital Stock a class of Parity
                           Securities or Senior Securities); or

                           (ii) Permit any Subsidiary of the Company to issue or
                  sell, or obligate itself to issue or sell, except to the
                  Company or any wholly owned Subsidiary, any security of such
                  Subsidiary or all or substantially all of the assets of any
                  Subsidiary; or

                           (iii) Increase or decrease (other than by redemption
                  or conversion) the total number of authorized shares of
                  Preferred Stock or amend any provisions of any Capital Stock
                  so as to make such Capital Stock redeemable by the Company.

         6. Conversion.

            (A) Procedure for Conversion

                           (i) Shares of Series C Preferred Stock are
                  convertible into Common Stock at the Conversion Rate per share
                  at the option of the Holders thereof at any time. Conversion
                  of shares of Series C Preferred Stock may be effected by
                  delivering a duly executed written Conversion Notice, in form
                  and substance as attached to the Main Agreement, by facsimile,
                  mail or overnight courier delivery, to the Company's address
                  set forth in Section 19 of the Main Agreement. The closing of
                  such exercise

                                     - 10 -

<PAGE>   11

                  shall take place (a) on the third Trading Day following and
                  excluding the date the Conversion Notice is delivered, (b)
                  such later date as the conditions set forth in Section
                  6(A)(ii) have been waived or satisfied or (c) any other date
                  upon which the exercising Holder and the Issuer mutually agree
                  (the "Conversion Closing Date").

                           (ii) It shall be a condition of the converting
                  Holder's obligation to close that each of the following are
                  satisfied, unless waived by such Holder:

                                            (A) (1) the representations and
                                    warranties made by the Company in the Main
                                    Agreement shall be true and correct as of
                                    the Conversion Closing Date, except as
                                    otherwise disclosed prior to the date of the
                                    Conversion Notice to the registered Holders
                                    of the Series C Preferred Stock either in
                                    writing directed to them or in a periodic or
                                    current report filed with the SEC; (2) the
                                    Company shall have complied fully with all
                                    of the covenants and agreements in the Main
                                    Agreement; (3) all shares to be issued upon
                                    such conversion are duly listed and admitted
                                    to trading on the principal securities
                                    exchange, if any, on which the Company's
                                    Common Stock is listed; and such Holder
                                    shall have received a certificate of the
                                    Chief Executive Officer or the Chief
                                    Financial Officer of the Company dated such
                                    date and to the effect of clauses (1), (2)
                                    and (3).

                                            (B) On the Conversion Closing Date,
                                    the Company shall have delivered to the
                                    Holder an opinion of Ervin, Cohen & Jessup
                                    LLP (or such other counsel reasonably
                                    satisfactory to such Holder) reasonably
                                    satisfactory to such Holder, dated the date
                                    of delivery, confirming in substance the
                                    matters covered in paragraphs (a), (b), (c),
                                    (d), (e) and (f) of Section 3 of the Main
                                    Agreement, subject to any changes required
                                    to reflect the exceptions referred to in
                                    clause (ii)(A)(1) above.

                  The Company shall use commercially reasonable efforts to cause
                  each of the foregoing conditions to be satisfied at the
                  earliest possible date. If such conditions are not satisfied
                  or waived prior to the third Trading Day following the date
                  the Conversion Notice is delivered, then the Holder may, at
                  its sole option, and at any time, withdraw the Conversion
                  Notice by written notice to the Company regardless of whether
                  such conditions have been satisfied or waived as of the
                  withdrawal date and, after such withdrawal, shall have no
                  further obligations with respect to such Conversion Notice and
                  may submit a Conversion Notice with respect to the shares
                  referenced in the original Conversion Notice at any time.
                  Withdrawal of such Conversion Notice shall be the exercising
                  Holder's sole remedy for the Issuer's failure to cause such
                  conditions to be satisfied, except to the extent that such
                  failure constitutes a breach of the provisions of the Main
                  Agreement.

                           (iii) Each Conversion of Series C Preferred Stock
                  shall be deemed to have been effected immediately prior to the
                  close of business on the Trading Day on which

                                     - 11 -

<PAGE>   12

                  the Conversion Notice is delivered as provided in Section
                  6(A)(i), and at such time the Person or Persons in whose name
                  or names any certificate or certificates for shares of Common
                  Stock (or Other Securities) shall be issuable upon such
                  conversion as provided in Section 6(A)(iv) shall be deemed to
                  have become the holder or holders of record thereof. The
                  foregoing notwithstanding, such conversion shall not be deemed
                  effective if and as of the date that the Holder delivers
                  written notice of withdrawal to the Company as set forth in
                  Section 6(A)(ii) above.

                           (iv) On the Conversion Closing Date, the Holder shall
                  surrender the certificate representing the shares of Series C
                  Preferred Stock to be converted to the Company at the address
                  set forth for notices to the Company in Section 19 of the Main
                  Agreement, and such Holder shall thereupon be entitled to
                  receive the number of duly authorized, validly issued, fully
                  paid and nonassessable shares of Common Stock (or Other
                  Securities) to which such Holder is entitled upon such
                  conversion.

                           (v) On the Conversion Closing Date, the Company at
                  its expense (including the payment by it of any applicable
                  issue taxes) will cause to be issued in the name of and
                  delivered to the Holder whose Series C Preferred Stock is
                  being converted via book-entry transfer (if available to the
                  Company), or if such Holder shall direct, at such address
                  specified by the Holder via reputable overnight courier, one
                  or more certificates for the number of duly authorized,
                  validly issued, fully paid and nonassessable shares of Common
                  Stock (or Other Securities) to which such Holder shall be
                  entitled upon such conversion, plus, in lieu of any fractional
                  share to which such Holder would otherwise be entitled, cash
                  in an amount equal to the same fraction of the Market Price
                  per share on the Trading Day immediately preceding the date of
                  such conversion, and, in case such conversion is for only part
                  of the shares represented by the certificate surrendered, at
                  such address specified by the Holder via reputable overnight
                  courier, a new Preferred Stock certificate of like tenor,
                  calling in the aggregate on the face or faces thereof for the
                  number of shares of Series C Preferred Stock which have not
                  been converted into Common Stock upon such conversion.

                  (B) The Company shall at all times reserve for issuance such
         number of its shares of Common Stock as shall be required under the
         Main Agreement.

                  (C) The Company will procure, at its sole expense, the listing
         of the Common Stock issuable upon conversion of the Series C Preferred
         Stock and shares issuable as dividends hereunder, subject to issuance
         or notice of issuance, on all stock exchanges on which the Common Stock
         is then listed, no later than the date on which such Series C Preferred
         Stock is issued to the Holder and thereafter shall use its best efforts
         to prevent delisting of such shares. The Company will pay any and all
         documentary stamp or similar issue or transfer taxes that may be
         payable in respect of the issuance or delivery of shares of Common
         Stock on conversion of shares of the Series C Preferred Stock. The
         Company shall not, however, be required to pay any tax which may be
         payable in respect of any transfer involving the issue and delivery of
         shares of Common Stock in a name other than that in which the shares of
         Series C Preferred Stock so converted were registered, and no such
         issue

                                     - 12 -

<PAGE>   13

         and delivery shall be made unless and until the person requesting such
         issue has paid to the Company the amount of any such tax, or has
         established, to the reasonable satisfaction of the Company, that such
         tax has been paid.

                  (D) No fractional shares or scrip representing fractional
         shares shall be issued upon the conversion of the Series C Preferred
         Stock. If any such conversion would otherwise require the issuance of a
         fractional share of Common Stock, an amount equal to such fraction
         multiplied by the current Market Price per share of Common Stock on the
         date of conversion shall be paid to the Holder in cash by the Company.
         If more than one share of Series C Preferred Stock shall be surrendered
         for conversion at one time by or for the same Holder, the number of
         full shares of Common Stock issuable upon conversion thereof shall be
         computed on the basis of the aggregate number of shares of Series C
         Preferred Stock so surrendered.

                  (E) Business Combinations.

                           (i) In case the Company after the date hereof (a) is
                  party to any acquisition of the Company by means of merger or
                  other form of corporate reorganization in which outstanding
                  shares of the Company are exchanged for securities or other
                  consideration issued, or caused to be issued, by the Acquiring
                  Person or its Parent, Subsidiary or affiliate, (b) a sale of
                  all or substantially all of the assets of the Company (on a
                  consolidated basis) in a single transaction or series of
                  related transactions, (c) any other transaction or series of
                  related transactions by the Company in which the power to cast
                  the majority of the eligible votes at a meeting of the
                  Company's stockholders at which directors are elected is
                  transferred to a single entity or group acting in concert, or
                  (d) shall effect a capital reorganization or reclassification
                  of the Common Stock or Other Securities (other than a
                  reorganization or reclassification in which the Common Stock
                  or Other Securities are not converted into or exchanged for
                  cash or other property, and, immediately after consummation of
                  such transaction, the stockholders of the Company immediately
                  prior to such transaction own the Common Stock, Other
                  Securities or other voting stock of the Company in
                  substantially the same proportions relative to each other as
                  such stockholders owned immediately prior to such
                  transaction), then, and in the case of each such transaction
                  (each of which is referred to herein as "Business
                  Combination"), proper provision shall be made so that, upon
                  the basis and the terms and in the manner provided herein, the
                  Holder of each unconverted share of Series C Preferred Stock,
                  upon conversion hereof at any time after the consummation of
                  such Business Combination, shall be entitled to receive upon
                  such conversion, in lieu of the Common Stock or Other
                  Securities issuable upon such conversion prior to such
                  consummation, either of the following, as shall be elected, in
                  whole or in part, from time to time, by such Holder (for
                  purposes of this Section 6(E) only, the Floor Price shall be
                  deemed to be zero dollars ($0.00)):

                                    (A) the stock and other securities, cash and
                           property to which such Holder would have been
                           entitled upon such consummation if such Holder had
                           converted such Series C Preferred Stock immediately
                           prior thereto;

                                     - 13 -

<PAGE>   14

                                    (B) the number of shares of common stock of
                           the Acquiring Person or its Parent, at the election
                           of the Holder, determined by dividing (A) the amount
                           equal to the product obtained by multiplying (1) the
                           number of shares of the Company's Common Stock (or
                           Other Securities) to which such Holder would have
                           been entitled had such holder converted such Series C
                           Preferred Stock immediately prior to such
                           consummation, times (2) the greater of the
                           Acquisition Price and the Conversion Price in effect
                           on the Trading Day immediately preceding the date of
                           such consummation, by (B) the Market Price per share
                           of the common stock of the Acquiring Person or its
                           Parent, as the case may be, on the Trading Day
                           immediately preceding the date of such consummation;
                           or

                                    (C) the number of shares of common stock of
                           the Acquiring Person or its Parent, at the election
                           of the Holder, determined by dividing (A) the Stated
                           Value of the converted share by (B) the lesser of (1)
                           the average of the daily Market Prices of the common
                           stock of the Acquiring Person or its Parent, as the
                           case may be, for the period of forty Trading Days
                           ending and excluding five Trading Days before and
                           excluding that date, but no greater than the lowest
                           of the following: (a) the average of the daily Market
                           Prices of the common stock of the Acquiring Person or
                           its Parent, as the case may be, for the first three
                           Trading Days of that forty day period; and (b) the
                           average of the daily Market Prices of the common
                           stock of the Acquiring Person or its Parent, as the
                           case may be, for the last three Trading Days of that
                           forty day period, and (2) the quotient of (a) the
                           product of (i) the Ceiling Price (but if before such
                           consummation the Company shall combine, subdivide or
                           reclassify its Common Stock, or shall declare any
                           dividend payable in shares of Common Stock, or shall
                           take any other action of a similar nature affecting
                           such shares, this amount shall be adjusted to the
                           extent appropriate to reflect such event or events)
                           and (ii) the Market Price per share of the common
                           stock of the Acquiring Person or its Parent, as the
                           case may be, on the Trading Day immediately preceding
                           the date of such consummation divided by (b) the
                           Market Price per share of the Company's Common Stock
                           on the Trading Day immediately preceding the date of
                           such consummation. The foregoing notwithstanding, if
                           the Acquiring Person or its Parent, as the case may
                           be, shall combine, subdivide or reclassify its Common
                           Stock, or shall declare any dividend payable in
                           shares of its Common Stock, or shall take any other
                           action of a similar nature affecting such shares, the
                           conversion price in this clause (C) shall be adjusted
                           to the extent appropriate to reflect such event,
                           including appropriate adjustments to account for any
                           such event that occurs during any of the measurement
                           periods set forth in the previous sentence.

                                    (D) cash in an amount equal to 133% of the
                           Stated Value of such share of Series C Preferred
                           Stock, provided, however, that the Company shall not
                           under any circumstances be obligated to pay cash to
                           any Holder, the Company's obligation being limited to
                           the obligation to require any

                                     - 14 -

<PAGE>   15

                           Acquiring Person to agree to pay such cash in
                           circumstances where a cash payment would be required.

                           (ii) Notwithstanding anything contained herein or in
                  the Main Agreement to the contrary, the Company will not
                  effect any Business Combination unless the requirements of
                  Section 10 of the Main Agreement have been met and unless,
                  prior to the consummation thereof, each Person (other than the
                  Company) which may be required to deliver any stock,
                  securities, cash or property upon conversion of Series C
                  Preferred Stock as provided herein shall assume, by written
                  instrument delivered to, and reasonably satisfactory to, the
                  Holders of a Majority of the Series C Preferred Stock, (A) the
                  obligations of the Company under this Certificate of Rights
                  and Preferences (and if the Company shall survive the
                  consummation of such transaction, such assumption shall be in
                  addition to, and shall not release the Company from, any
                  continuing obligations of the Company under this Certificate
                  of Rights and Preferences) and (B) the obligation to deliver
                  to the Holders of Series C Preferred Stock such shares of
                  stock, securities, cash or property as, in accordance with the
                  foregoing provisions of this Section 6(E), such Holders may be
                  entitled to receive, and such Person shall have similarly
                  delivered to such Holders an opinion of counsel for such
                  Person, which counsel shall be reasonably satisfactory to
                  Holders of a Majority of the Series C Preferred Stock, stating
                  that the rights of such Holders under this Certificate of
                  Rights and Preferences shall thereafter continue in full force
                  and effect and the terms hereof, including, without
                  limitation, all of the provisions of this Section 6(E) shall
                  be applicable to the stock, securities, cash or property which
                  such Person may be required to deliver upon any conversion of
                  Preferred Stock or exercise of any rights pursuant hereto.

         7. Status of Converted Shares; Limitations on Series C Preferred Stock.
The Company shall return to the status of unauthorized and undesignated shares
of Preferred Stock each share of Series C Preferred Stock which shall be
converted or for any other reason acquired by the Company, and such shares
thereafter may have such characteristics and designations as the Board may
determine (subject to Section 5), provided, however, no share of Series C
Preferred Stock which shall be converted or otherwise acquired by the Company
shall thereafter be reissued, sold or transferred by the Company as Series C
Preferred Stock. The Company will not issue any further shares of Series C
Preferred Stock. The Company shall have no right to redeem the shares of Series
C Preferred Stock without the consent of a Majority of the Holders.

                                     - 15 -

<PAGE>   16

         IN WITNESS WHEREOF, this Certificate of Rights and Preferences has been
signed on behalf of the Company by its President and attested to by its
Secretary, all as of the 27th day of December, 2000.

                                    NEWPARK RESOURCES, INC.

                                    By: /s/ Matthew W. Hardey
                                        ---------------------------------
                                        Matthew W. Hardey, Vice President

ATTEST:

By: /s/ Edah Keating
    -----------------------
    Edah Keating, Secretary<PAGE>   1
                                                                     EXHIBIT 4.2

                                    AGREEMENT

                         BETWEEN NEWPARK RESOURCES, INC.

                        AND FLETCHER INTERNATIONAL, LTD.

                          DATED AS OF DECEMBER 27, 2000

<PAGE>   2

                                    AGREEMENT

                  This Agreement (this "Agreement") dated as of December 27,
2000 is entered into by and between Newpark Resources, Inc., a corporation
organized under the laws of Delaware (together with its successors, "Newpark"),
and Fletcher International, Ltd., a company organized under the laws of Bermuda
(together with its successors, "Fletcher").

                  The parties hereto agree as follows:

                  1. Purchase and Sale. In consideration of and upon the basis
of the representations, warranties and agreements and subject to the terms and
conditions set forth in this Agreement:

                           a. Fletcher agrees to purchase from Newpark, and
         Newpark agrees to sell to Fletcher on the Closing Date (as defined
         below), in accordance with Section 2 below, 120,000 shares (the
         "Preferred Shares") of Newpark's Series C Convertible Preferred Stock,
         liquidation preference $250 per share (the "Series C Preferred Stock"),
         having the terms and conditions set forth in the Certificate of Rights
         and Preferences attached hereto as Annex A (the "Certificate of Rights
         and Preferences"), at an aggregate purchase price of $30,000,000.
         Fletcher shall have the right to convert the outstanding Preferred
         Shares into shares of Common Stock in the manner, and subject to the
         terms, specified in this Agreement and in the Certificate of Rights and
         Preferences, respectively.

                           b. The closing (the "Closing") of the sale of the
         Preferred Shares shall occur on the Trading Day following the
         satisfaction or, if applicable, waiver of the conditions set forth in
         Sections 13 and 14 hereof, or at such other date and time as Fletcher
         and Newpark shall mutually agree (such date, the "Closing Date"). As
         used herein, the term "Common Shares" means the shares of Common Stock
         issued and/or issuable under this Agreement, including shares issuable
         upon conversion of or as dividends under the Preferred Shares and all
         other shares issuable under the Certificate of Rights and Preferences
         or this Agreement; the term "Investment Securities" means the Preferred
         Shares issued hereunder and all Common Shares; the term "Trading Day"
         means any day on which the Common Stock may be traded on the NYSE; and
         the term "NYSE" means the New York Stock Exchange, but if the New York
         Stock Exchange is not then the principal U.S. trading market for the
         Common Stock, then "NYSE" shall be deemed to mean the principal U.S.
         national securities exchange (as defined in the Securities Exchange Act
         of 1934, as amended (the "Exchange Act")) on which the Common Stock is
         then traded, or if such Common Stock is not then listed or admitted to
         trading on any national securities exchange but is designated as a
         national market system security or a Nasdaq SmallCap Market Security by
         the NASD, then such market system,

<PAGE>   3

         or if such Common Stock is not listed or quoted on any of the
         foregoing, then the OTC Bulletin Board.

                  2. Closing. The Closing shall take place initially via
facsimile on the Closing Date in the manner set forth below; provided that
original certificates representing shares of Series C Preferred Stock shall be
delivered via Federal Express on the second Trading Day following the Closing
Date to Fletcher as Fletcher instructs in writing, and provided, further, that
each original preferred stock certificate issued in accordance with this Section
2 shall represent 20,000 shares of Series C Preferred Stock (except that to the
extent the number of shares of Series C Preferred Stock to be delivered at any
given time is not evenly divisible by 20,000, one stock certificate shall
represent the remaining shares). At the Closing, the following deliveries shall
be made:

                           a. Series C Preferred Stock. Newpark shall deliver to
         Fletcher six (6) stock certificates, each representing 20,000 shares of
         Series C Preferred Stock duly registered on the books of Newpark as
         instructed by Fletcher.

                           b. Purchase Price. Fletcher shall cause to be wire
         transferred to Newpark, in accordance with the instructions set forth
         in Section 19, the aggregate purchase price of $30,000,000 in
         immediately available United States dollars.

                           c. Closing Documents. The closing documents required
         by Sections 13 and 14 shall be delivered to Fletcher and Newpark,
         respectively.

                           d. Delivery Notice. An executed copy of the delivery
         notice in the form attached hereto as Annex B shall be delivered to
         Fletcher.

The deliveries specified in this Section 2 shall be deemed to occur
simultaneously as part of a single transaction, and no delivery shall be deemed
to have been made until all such deliveries have been made.

                  3. Representations and Warranties of Newpark. Newpark hereby
represents and warrants to Fletcher as of the date hereof and on the Closing
Date, as follows:

                           a. Newpark has been duly incorporated and is validly
         existing in good standing under the laws of Delaware or, after the
         Closing Date, if another entity has succeeded Newpark in accordance
         with the terms hereof, under the laws of one of the states of the
         United States.

                           b. The execution, delivery and performance of this
         Agreement and the Certificate of Rights and Preferences by Newpark
         (including the issuance of the Investment Securities) have been duly
         authorized by all requisite corporate action and no

                                       2
<PAGE>   4

         further consent or authorization of Newpark, its Board of Directors or
         its shareholders is required, except as otherwise contemplated by this
         Agreement.

                           c. This Agreement has been duly executed and
         delivered by Newpark and, when this Agreement is duly authorized,
         executed and delivered by Fletcher, will be a valid and binding
         agreement enforceable against Newpark in accordance with its terms,
         subject to bankruptcy, insolvency, reorganization, moratorium and
         similar laws of general applicability relating to or affecting
         creditors' rights generally and to general principles of equity.

                           d. Newpark has full corporate power and authority
         necessary to execute and deliver this Agreement and to perform its
         obligations hereunder and under the Certificate of Rights and
         Preferences (including the issuance of the Investment Securities).

                           e. No consent, approval, authorization or order of
         any court, governmental agency or other body is required for execution
         and delivery by Newpark of this Agreement or the performance by Newpark
         of any of its obligations hereunder and under the Certificate of Rights
         and Preferences other than such as may already have been received,
         except as otherwise contemplated by this Agreement.

                           f. Neither the execution and delivery by Newpark of
         this Agreement nor the performance by Newpark of any of its obligations
         hereunder and under the Certificate of Rights and Preferences:

                                    (i) violates, conflicts with, results in a
                  breach of, or constitutes a default (or an event which with
                  the giving of notice or the lapse of time or both would be
                  reasonably likely to constitute a default) under (A) the
                  certificates of incorporation or by-laws of Newpark or any of
                  its subsidiaries, (B) any decree, judgment, order, law,
                  treaty, rule, regulation or determination of which Newpark is
                  aware (or would be aware after due inquiry) of any court,
                  governmental agency or body, or arbitrator having jurisdiction
                  over Newpark or any of its subsidiaries or any of their
                  respective properties or assets, (C) the terms of any bond,
                  debenture, note or any other evidence of indebtedness, or any
                  agreement, stock option or other similar plan, indenture,
                  lease, mortgage, deed of trust or other instrument to which
                  Newpark or any of its subsidiaries is a party, by which
                  Newpark or any of its subsidiaries is bound, or to which any
                  of the properties or assets of Newpark or any of its
                  subsidiaries is subject, (D) the terms of any "lock-up" or
                  similar provision of any underwriting or similar agreement to
                  which Newpark or any of its subsidiaries is a party or (E) any
                  rule or regulation of the National Association of Securities
                  Dealers, Inc. or the NYSE (subject to obtaining the Required
                  Consents under circumstances contemplated by Section 6(b) of
                  this Agreement) or any rule or regulation of the markets where
                  Newpark's securities are publicly traded applicable to Newpark
                  or the transactions contemplated here by; or

                                       3
<PAGE>   5

                                    (ii) results in the creation or imposition
                  of any lien, charge or encumbrance upon any Investment
                  Securities or upon any of the properties or assets of Newpark
                  or any of its subsidiaries.

                           g. Newpark has validly reserved for issuance to
         Fletcher 120,000 shares of Series C Preferred Stock pursuant to this
         Agreement and 6,100,000 shares of Common Stock (or such greater number
         as may be required by Section 9(g)) for issuance upon conversion of the
         Preferred Shares. When issued to Fletcher against payment therefor,
         each Investment Security:

                                    (1) will have been duly and validly
                           authorized, duly and validly issued, fully paid and
                           non-assessable;

                                    (2) will be free and clear of any security
                           interests, liens, claims or other encumbrances (other
                           than security interests, liens, claims or other
                           encumbrances created solely by Fletcher); and

                                    (3) will not have been issued or sold in
                           violation of any preemptive or other similar rights
                           of the holders of any securities of Newpark.

                           h. Newpark satisfies all maintenance criteria of the
         New York Stock Exchange or, after the Closing Date, has a valid
         exemption from such criteria of which it has previously notified
         Fletcher in writing. No present set of facts or circumstances will
         (with the passage of time or the giving of notice or both or neither)
         cause any of the Common Stock to be delisted from the New York Stock
         Exchange. All of the Covered Securities (as defined in Section 4(b))
         will, when issued, be duly listed and admitted for trading on all of
         the markets where shares of Common Stock are traded, including the New
         York Stock Exchange within five (5) days of the Closing.

                           i. There is no pending or, to the best knowledge of
         Newpark, threatened action, suit, proceeding or investigation before
         any court, governmental agency or body, or arbitrator having
         jurisdiction over Newpark or any of its affiliates that would affect
         the execution by Newpark of, or the performance by Newpark of its
         obligations under, this Agreement or the Certificate of Rights and
         Preferences.

                           j. Since December 31, 1997, none of Newpark's filings
         with the United States Securities and Exchange Commission (the "SEC")
         under the Securities Act of 1933, as amended (the "Securities Act") or
         under Section 13(a) or 15(d) of the Exchange Act (each an "SEC Filing")
         contained any untrue statement of a material fact or

                                       4
<PAGE>   6

         omitted to state any material fact necessary in order to make the
         statements, in the light of the circumstances under which they were
         made, not misleading. Since the date of Newpark's most recent SEC
         Filing, there has not been, and Newpark is not aware of, any
         development that is reasonably likely to result in any material adverse
         change in the condition, financial or otherwise, or in the business
         affairs or prospects of Newpark, whether or not arising in the ordinary
         course of business.

                           k. The offer and sale of the Investment Securities to
         Fletcher pursuant to this Agreement will, subject to compliance by
         Fletcher with the applicable representations and warranties contained
         in Section 7 hereof and with the applicable covenants and agreements
         contained in Section 11 hereof, be made in accordance with the
         provisions and requirements of Securities Act Section 4(2) or
         Regulation D promulgated under the Securities Act and any applicable
         state law.

                           l. As of the date hereof, the authorized capital
         stock of Newpark consists of 100,000,000 shares of Common Stock and
         1,000,000 shares of preferred stock, par value $0.01 ("Preferred
         Stock"). As of December 19, 2000, (A) 69,562,429 shares of Common Stock
         and 270,000 shares of Preferred Stock were issued and outstanding, (B)
         9,980,587 shares of Common Stock and no shares of Preferred Stock are
         currently reserved and subject to issuance upon the exercise of
         outstanding stock options, warrants or other convertible rights (other
         than shares of Common Stock issuable upon the conversion of outstanding
         Preferred Stock), (C) 668 shares of Common Stock are held in the
         treasury of Newpark, (D) up to 3,378,911 additional shares of Common
         Stock may be issued under the 1993 Non-Employee Directors' Stock Option
         Plan, the Amended and Restated Newpark Resources, Inc. 1995 Incentive
         Stock Option Plan (including shares that may be issued as a result of
         subsequent annual increases permitted under this plan), the Newpark
         Resources, Inc. Cash and Stock Incentive Plan and the 1999 Employee
         Stock Purchase Plan (collectively, the "Benefit Plans"), (E) 187,330
         shares of Common Stock reserved for issuance as dividends on the Series
         A Cumulative Perpetual Preferred Stock, (F) 523,070 shares of Common
         Stock reserved for issuance as dividends on the Series B Convertible
         Preferred Stock and (G) 5,500,000 shares of Common Stock reserved for
         issuance upon conversion of the currently outstanding Series B
         Convertible Preferred Stock and a presently indeterminate number of
         shares of Common Stock reserved for issuance upon conversion of the
         currently outstanding Series A Cumulative Perpetual Preferred Stock.
         All of the outstanding shares of Common Stock are, and all shares of
         capital stock which may be issued pursuant to stock options, warrants
         or other convertible rights will be, when issued and paid for in
         accordance with the respective terms thereof, duly authorized, validly
         issued, fully paid and non-assessable and free of any preemptive rights
         in respect thereof. As of the date hereof, except as set forth above,
         and except for shares of Common Stock or other securities issued upon
         conversion, exchange, exercise or purchase associated with the
         securities, options, warrants, rights and other instruments referenced
         above, no shares of capital stock or other voting securities of Newpark
         were outstanding, no equity equivalents, interests in the ownership

                                       5
<PAGE>   7

         or earnings of Newpark or other similar rights were outstanding, and
         there were no existing options, warrants, calls, subscriptions or other
         rights or agreements or commitments relating to the capital stock of
         Newpark or any of its subsidiaries or obligating Newpark or any of its
         subsidiaries to issue, transfer, sell or redeem any shares of capital
         stock, or other equity interest in, Newpark or any of its subsidiaries
         or obligating Newpark or any of its subsidiaries to grant, extend or
         enter into any such option, warrant, call, subscription or other right,
         agreement or commitment. Attached hereto as Schedule 3(l) is a true and
         correct list as of the date of this Agreement of all outstanding
         options, warrants, calls, subscriptions and other rights or agreements
         or commitments relating to the issuance of additional shares of capital
         stock of Newpark and with respect to each a description of the number
         and class of securities and the exercise price thereof; provided that
         with respect to Benefit Plans, such schedule may summarize the total
         number of shares subject to, the range of exercise prices under and the
         average exercise prices of such options, warrants, calls, or other
         rights issued under the Benefit Plans.

                           m. Solvency. The sum of the assets of Newpark, both
         at a fair valuation and at present fair salable value, exceeds its
         liabilities, including contingent liabilities, Newpark has sufficient
         capital with which to conduct its business as presently conducted and
         as proposed to be conducted and Newpark has not incurred debts, and
         does not intend to incur debts, beyond its ability to pay such debts as
         they mature. For purposes of this paragraph, "debt" means any liability
         on a claim, and "claim" means (x) a right to payment, whether or not
         such right is reduced to judgment, liquidated, unliquidated, fixed,
         contingent, matured, unmatured, disputed, undisputed, legal, equitable,
         secured, or unsecured, or (y) a right to an equitable remedy for breach
         of performance if such breach gives rise to a payment, whether or not
         such right to an equitable remedy is reduced to judgment, fixed,
         contingent, matured, unmatured, disputed, undisputed, secured, or
         unsecured. With respect to any such contingent liabilities, such
         liabilities are computed at the amount which, in light of all the facts
         and circumstances existing at the time, represents the amount which can
         reasonably be expected to become an actual or matured liability.

                           n. Audited Financials. Attached hereto as Annex C is
         a true, correct and complete copy of (i) the report of Deloitte &
         Touche LLP to the board of directors and shareholders of Newpark dated
         March 26, 1999 (March 27, 2000 as to Note D thereto), together with the
         accompanying consolidated financial statements and schedules of Newpark
         at December 31, 1998 and the results of Newpark's operations and cash
         flows for each of the two (2) years in the period ended December 31,
         1998 (ii) the report of Arthur Andersen LLP dated March 27, 2000,
         together with the accompanying consolidated financial statements and
         schedules of Newpark at December 31, 1999 and the results of Newpark's
         operations and cash flows for the year ended December 31, 1999, as such
         report appears in the Annual Report on Form 10-K for the fiscal year
         ended December 31, 1999 filed by Newpark with the SEC (the "Auditor
         Report") and (iii) the written consent of Arthur Andersen LLP to the
         inclusion of its report described in clause (ii) herein.

                                       6
<PAGE>   8

                           o. Equivalent Value. As of the date hereof, the
         consideration that Newpark is receiving from Fletcher is equivalent in
         value to the consideration Fletcher is receiving from Newpark pursuant
         to this Agreement. As of the date hereof, under the terms of this
         Agreement, Newpark is receiving fair consideration from Fletcher for
         the agreements, covenants, representations and warranties made by
         Newpark to Fletcher.

                           p. No Non-Public Information. Fletcher has not
         requested from Newpark, and Newpark has not furnished to Fletcher, any
         material non-public information concerning Newpark or its subsidiaries.

                  4. Registration Provisions.

                           a. Newpark shall as soon as practicable and at its
         own expense, but in no event later than thirty (30) days after the
         Closing Date, file a Registration Statement (as defined below) under
         the Securities Act covering the resale of all of the Common Shares and
         shall use its best efforts to cause such Registration Statement to be
         declared effective not later than the 75th day following the Closing
         Date (the "Required Registration Date"). The obligations to have the
         Registration Statement declared effective and to maintain such
         effectiveness as provided in this Section 4 (subject to any Blackout
         Period that does not constitute a Blackout Violation) are referred to
         herein as the "Registration Requirement." Pursuant to the preceding
         sentence, Newpark shall register pursuant to such Registration
         Statement not less than the number of shares of Common Stock equal at
         least to 1.5 times the total number of Common Shares issued or issuable
         under this Agreement (including all shares issued or issuable under the
         Preferred Shares, whether upon conversion, as dividends within the year
         following such date (assuming that all dividends are made as required
         in the Certificate of Rights and Preferences and are made in Common
         Stock) or otherwise on an as-converted basis as of such date) (the
         "Registrable Amount"). Newpark shall promptly amend such Registration
         Statement (or, if necessary, file a new Registration Statement) at any
         time that the number of Common Shares issued and issuable under this
         Agreement exceeds eighty percent (80%) of the number of shares then
         registered so that the Registrable Amount (as determined on such date)
         of Common Shares shall be registered and freely tradable.

                           b. Each Common Share is a "Covered Security" and the
         registration statement filed or required to be filed under the
         Securities Act in accordance with Section 4(a) hereof is referred to as
         the "Registration Statement". Newpark shall provide prompt written
         notice to Fletcher when the Registration Statement has been declared
         effective by the SEC.

                                       7
<PAGE>   9

                           c. Newpark will use its best efforts to: (A) keep the
         Registration Statement effective until the earlier of (x) the later of
         (i) the second anniversary of the issuance of the last Covered Security
         that may be issued, or (ii) such time as all of the Covered Securities
         issued or issuable to Fletcher can be sold by Fletcher or any of its
         affiliates within a three (3)-month period without compliance with the
         registration requirements of the Securities Act pursuant to Rule 144
         under the Securities Act ("Rule 144") or (y) the date all of the
         Covered Securities issued or issuable shall have been sold by Fletcher;
         (B) prepare and file with the SEC such amendments and supplements to
         the Registration Statement and the prospectus used in connection with
         the Registration Statement (as so amended and supplemented from time to
         time, the "Prospectus") as may be necessary to comply with the
         provisions of the Securities Act with respect to the disposition of all
         Covered Securities by Fletcher or any of its affiliates; (C) furnish
         such number of Prospectuses and other documents incident thereto,
         including any amendment of or supplement to the Prospectus, as Fletcher
         from time to time may reasonably request; (D) cause all Covered
         Securities to be listed on each securities exchange and quoted on each
         quotation service on which similar securities issued by Newpark are
         then listed or quoted; (E) provide a transfer agent and registrar for
         all Covered Securities and a CUSIP number for all Covered Securities;
         (F) otherwise comply with all applicable rules and regulations of the
         SEC, the New York Stock Exchange and any other exchange or quotation
         service on which the Covered Securities are obligated to be listed or
         quoted under this Agreement; and (G) file the documents required of
         Newpark and otherwise obtain and maintain requisite blue sky clearance
         in (x) New York, Delaware and all other jurisdictions in which any of
         the shares of Common Stock were originally sold and (y) all other
         states specified in writing by Fletcher, provided, however, that as to
         this clause (y), Newpark shall not be required to qualify to do
         business or consent to service of process in any state in which it is
         not now so qualified or has not so consented. Fletcher shall have the
         right to approve the description of the plan of distribution and all
         other references to Fletcher contained in any Registration Statement
         and any Prospectus.

                           d. Newpark shall furnish to Fletcher upon request a
         reasonable number of copies of a supplement to or an amendment of any
         Prospectus as may be necessary in order to facilitate the public sale
         or other disposition of all or any of the Covered Securities by
         Fletcher or any of its affiliates pursuant to the Registration
         Statement.

                           e. With a view to making available to Fletcher and
         its affiliates the benefits of Rule 144 and Form S-3 under the
         Securities Act, Newpark covenants and agrees to: (A) make and keep
         available adequate current public information (within the meaning of
         Rule 144(c)) concerning Newpark, until the earlier of (x) the second
         anniversary of the issuance of the last Covered Security to be issued
         or (y) such date as all of the Covered Securities shall have been
         resold by Fletcher or any of its affiliates; and (B) furnish to
         Fletcher upon request, as long as Fletcher owns any Covered Securities,
         (x)

                                       8
<PAGE>   10

         a written statement by Newpark that it has complied with the reporting
         requirements of the Securities Act and the Exchange Act, (y) a copy of
         the most recent annual or quarterly report of Newpark, and (z) such
         other information as may be reasonably requested in order to avail
         Fletcher and its affiliates of Rule 144 or Form S-3 with respect to
         such Covered Securities.

                           f. Notwithstanding anything else in this Section 4,
         if, at any time during which a Prospectus is required to be delivered
         in connection with the sale of any Covered Security, Newpark determines
         in good faith that a development has occurred or a condition exists as
         a result of which the Registration Statement or the Prospectus contains
         a material misstatement or omission, or that a material transaction in
         which Newpark is engaged or proposes to engage would require an
         amendment to the Registration Statement or a supplement to the
         Prospectus and the disclosure of such transaction would be premature or
         injurious to the consummation of the transaction, Newpark will
         immediately notify Fletcher thereof by telephone and in writing. Upon
         receipt of such notification, Fletcher and its affiliates will
         immediately suspend all offers and sales of any Covered Security
         pursuant to the Registration Statement. In such event, Newpark will
         amend or supplement the Registration Statement as promptly as
         practicable and will use its best efforts to take such other steps as
         may be required to permit sales of the Covered Securities thereunder by
         Fletcher and its affiliates in accordance with applicable federal and
         state securities laws. Newpark will promptly notify Fletcher after it
         has determined in good faith that such sales have become permissible in
         such manner and will promptly deliver copies of the Registration
         Statement and the Prospectus (as so amended or supplemented) to
         Fletcher in accordance with paragraphs (c) and (d) of this Section 4.
         Notwithstanding the foregoing, (A) under no circumstances shall Newpark
         be entitled to exercise its right to suspend sales of any Covered
         Securities pursuant to the Registration Statement more than twice in
         any twelve (12)-month period, (B) the period during which such sales
         may be suspended (each a "Blackout Period") shall not exceed thirty
         (30) days, and (C) no Blackout Period may commence less than thirty
         (30) days after the end of the preceding Blackout Period. If any
         Blackout Period shall exceed the duration or frequency limits set forth
         in clause (A) or (B) (a "Blackout Violation"), then from the first day
         of such Blackout Violation until the first anniversary of the last day
         of the Blackout Period causing such Blackout Violation, the Conversion
         Price under the Certificate of Rights and Preferences shall decrease by
         two and one-half percent (2.5%). If a second Blackout Violation occurs
         before (or if the original Blackout Violation shall continue on) the
         first anniversary of the first day of the original Blackout Violation,
         then the Conversion Price under the Preferred Shares shall decrease by
         an additional two and one-half percent (2.5%). Each subsequent Blackout
         Violation occurring on or before the anniversary of the first day of
         such Blackout Violation shall cause the Conversion Price to decrease by
         two and one-half percent (2.5%) in addition to all prior decreases,
         provided that not more than one such additional decrease shall take
         effect in any twelve (12)-month period. All such adjustments in the
         Conversion Price shall continue until twelve (12) months shall have
         passed without a Blackout Violation.

                                       9
<PAGE>   11

                  Upon the commencement of a Blackout Period pursuant to this
         Section 4, Fletcher will notify Newpark of any contract to sell,
         assign, deliver or otherwise transfer any Covered Security (each a
         "Sales Contract") that Fletcher or any of its affiliates has entered
         into prior to the commencement of such Blackout Period and that would
         require delivery of such Covered Securities during such Blackout
         Period, which notice will contain the aggregate sale price and volume
         of Covered Securities pursuant to such Sales Contract. Upon receipt of
         such notice, Newpark will immediately notify Fletcher of its election
         either (i) to terminate the Blackout Period and, as promptly as
         practicable, amend or supplement the Registration Statement or the
         Prospectus in order to correct the material misstatement or omission
         and deliver to Fletcher copies of such amended or supplemented
         Registration Statement and Prospectus in accordance with paragraphs (c)
         and (d) of this Section 4, or (ii) to continue the Blackout Period in
         accordance with this paragraph. If Newpark elects to continue the
         Blackout Period (and, in any case, if a Blackout Violation occurs), and
         Fletcher or any of its affiliates are therefore unable to consummate
         the sale of Covered Securities pursuant to the Sales Contract, Newpark
         will promptly indemnify each Fletcher Indemnified Party (as such term
         is defined in Section 17(a) below) against any Proceeding (as such term
         is defined in Section 17(a) below) that each Fletcher Indemnified Party
         may incur arising out of or in connection with Fletcher's breach or
         alleged breach of any such Sales Contract, and Newpark shall reimburse
         each Fletcher Indemnified Party for any reasonable costs or expenses
         (including reasonable legal fees) incurred by such party in
         investigating or defending any such Proceeding (collectively, the
         "Indemnification Amount").

                           g. In addition to any other remedies available to
         Fletcher under this Agreement, if the Registration Statement has not
         been declared effective by the Required Registration Date or such
         Registration Statement is not available with respect to all Covered
         Securities (except during a Blackout Period or a Blackout Violation),
         then the Conversion Price (as defined in the Certificate of Rights and
         Preferences) shall be permanently decreased by two and one-half percent
         (2.5%) for each month (or portion thereof), compounded monthly, that
         such Registration Statement shall not have been declared effective or
         such Registration Statement is not available with respect to all
         Covered Securities (except during a Blackout Period or a Blackout
         Violation); provided that any adjustment in this Section 4(g) caused by
         a Registration Statement that is available with respect to fewer than
         all of the Covered Securities shall affect all Covered Securities
         unless such Registration Statement is unavailable for less than 5,000
         shares of Covered Securities, in which case such adjustment shall only
         affect such lesser number of Covered Securities.

                           h. Nothing in this Section 4 shall be construed to
         impose an obligation upon Newpark to register the Preferred Shares.

                                       10
<PAGE>   12

                  5. "Market Stand-Off" Agreement. If requested by Newpark and
an underwriter in a firm commitment underwritten public offering of Common Stock
with net proceeds of at least $25,000,000 to Newpark, after underwriter's
discounts or commissions and other fees or expenses, Fletcher shall not sell or
otherwise transfer or dispose of any Common Stock (other than Common Stock
included in the registration) during the ninety (90) day period (or such shorter
period, if so notified by Newpark in writing) following the effective date of a
registration statement of Newpark filed under the Securities Act, provided that:

                           a. such agreement shall only apply to registration
         statements of Newpark including securities to be sold on its behalf to
         the public in an underwritten offering where the effective date of any
         such registration statement shall not occur before the first
         anniversary of the effective date of the immediately prior registration
         statement with respect to which Fletcher was required to provide such
         agreement;

                           b. all officers and directors of Newpark, all
         purchasers or subsequent holders of Offered Shares (other than
         subsequent holders who acquire such securities through bona fide
         purchases in the public market) and all holders of Newpark Series A
         Cumulative Perpetual Preferred Stock are bound by and have entered into
         similar agreements; and

                           c. Newpark shall (and shall cause such underwriter
         to) use best efforts to cause such stand-off period not to exist or, if
         it does exist, to terminate at the earliest practicable date.

The obligations described in this Section 5 shall not apply to a registration
relating solely to employee benefit plans on Form S-1 or Form S-8 or similar
forms that may be promulgated in the future, or a registration relating solely
to a transaction on Form S-4 or similar forms that may be promulgated in the
future.

                  6. Conversion of Preferred Shares; Dividends.

                           a. Preferred Shares are convertible into Common
         Shares in accordance with the terms and conditions set forth in Section
         6 of the Certificate of Rights and Preferences. The form of the
         "Preferred Stock Conversion Notice" to be executed and delivered by
         Fletcher to Newpark as specified therein is attached hereto as Annex D
         and the form of the "Preferred Stock Conversion Delivery Notice" to be
         executed and delivered by Newpark to Fletcher as specified therein is
         attached hereto as Annex E.

                           b. In the event the number of Common Shares issued
         and/or issuable on any date (a "Trigger Date") together with any Common
         Shares issuable as dividends within one (1) year following such date
         pursuant to this Agreement, assuming that all such dividends are paid
         in Common Stock and are paid as they accrue, in each case

                                       11
<PAGE>   13

         without regard to any 65 Day Notice requirements, would result in
         Fletcher receiving more than seventeen and one-half percent (17.5%) of
         the shares of Common Stock outstanding as of the date of this Agreement
         (the "Original Number"), Newpark (A) shall not issue Common Shares (the
         "Issuance Blockage") to the extent that the total number of Common
         Shares issued hereunder would exceed nineteen and ninety-nine
         one-hundredths percent (19.99%) of the Original Number and such
         circumstance would require the approval (the "Required Consent") of the
         holders of Common Stock pursuant to the listing requirements or rules
         of the New York Stock Exchange (or such other U.S. national securities
         exchange on which Common Stock is then listed), (B) shall notify
         Newpark's stockholders of a stockholder meeting for the purpose of
         voting on the Required Consent within twenty (20) Trading Days from the
         Trigger Date, which meeting shall be held on or before the 60th
         calendar day after the Trigger Date, and (C) shall otherwise use its
         best efforts to obtain, on or before the 60th day after the Trigger
         Date, the Required Consent for the issuance of all Common Shares issued
         or issuable under this Agreement (including, but not limited to, all
         previously issued Common Shares and all unconverted Preferred Shares
         and all shares that may become issuable as dividends under the
         Preferred Shares, assuming that all such dividends are paid in Common
         Stock and are paid as they accrue) including, but not limited to,
         recommending to Newpark's stockholders that such stockholders give the
         Required Consent and not withdrawing such recommendation. If the
         Required Consent has not been obtained within such sixty (60)-day
         period, or Newpark otherwise does not have sufficient authorized shares
         to fulfill its obligation, Fletcher shall have the right to convert up
         to that amount of the Preferred Shares, the conversion of which would
         result in the total number of shares issued hereunder exceeding
         nineteen and ninety-nine one-hundredths percent (19.99%) of the
         Original Number or that number which is unavailable for issuance, as
         the case may be, into the rights described herein (the "Excess
         Rights"). Fletcher shall exercise such right to obtain Excess Rights by
         delivering one or more written notices in the form attached hereto as
         Annex F (an "Excess Rights Notice") to Newpark from time to time. The
         date an Excess Rights Notice is delivered shall be an "Excess Notice
         Date." The stated value of the Excess Rights shall be an amount equal
         to the product of (A) the Average Price on the Excess Notice Date and
         (B) the number of Common Shares that would be issuable in respect of
         such conversion but for the Issuance Blockage (without regard to any
         requirement to deliver a 65 Day Notice). From creation until the first
         anniversary of the date on which the Required Consent is obtained,
         Excess Rights may, in whole or in part, from time to time, be converted
         into additional Preferred Shares (identical in all respects to the
         Preferred Shares originally issued hereunder, provided that such shares
         may bear a different name (e.g., "Series C-1 Convertible Preferred
         Stock")) at the ratio of $250 of stated value of Excess Rights to one
         Preferred Share.

                           c. The aggregate number of Common Shares issuable
         under this Agreement and the Agreement by and between Fletcher and
         Newpark dated as of May 30, 2000 (the "May 30, 2000 Agreement") shall
         not exceed the Maximum Number of shares of Common Stock. The "Maximum
         Number" equals the sum of 6,782,337 plus the

                                       12
<PAGE>   14

         Exercisable Number. The "Exercisable Number" is initially zero and
         thereafter may be increased upon expiration of a sixty-five (65) day
         period (the "Notice Period") after either (i) Fletcher delivers a
         notice (a"65 Day Notice") to Newpark designating an aggregate number of
         Common Shares in excess of the Maximum Number which shall be issuable
         upon conversion of the Preferred Shares and the Series B Convertible
         Preferred Stock and the warrant issued under the May 30, 2000
         Agreement, or (ii) Newpark delivers a notice (an "Increase Notice")
         stating the increase, if any (the "Increase"), in the aggregate number
         of Common Shares outstanding as of the last day of the preceding month
         over the number outstanding as of the last day of the second preceding
         month, or in the case of the last day of the month immediately
         following the Closing Date, the number of shares outstanding specified
         in Section 3(l), in which event the Exercisable Number shall be
         automatically increased by the number which is nine and three-quarters
         percent (9.75%) of the Increase. A 65 Day Notice may be given at any
         time. Unless expressly waived by Fletcher, Newpark shall deliver an
         Increase Notice to Fletcher on or before the 10th day of every calendar
         month from and including the Closing Date. From time to time following
         the Notice Period, Common Stock may be issued to Fletcher on any
         Business Day for any quantity of Common Stock, such that the aggregate
         number of shares of Common Stock issued hereunder is less than or equal
         to the Maximum Number. Nothing in this Section 6(c) shall limit or
         apply to the creation or conversion of Excess Rights under Section
         6(b).

                           d. Newpark shall use best efforts to obtain from the
         Newpark stockholders, if required, the requisite authority to issue
         Common Shares to Fletcher in accordance with the terms of this
         Agreement.

                           e. By the second Trading Day before the designated
         Dividend Payment Date (as defined and set forth in the Certificate of
         Rights and Preferences), the holder of record of the Series C Preferred
         Stock (the "Holder") shall provide to Newpark a report of Bloomberg,
         L.P. or a summary thereof, or an excerpt thereof prepared by the
         Holder, which shall include the daily Market Prices (as defined and set
         forth in the Certificate of Rights and Preferences) of the Common Stock
         for the five Trading Days ending on and including the third Trading Day
         before the designated Dividend Payment Date. On the second Trading Day
         before such designated Dividend Payment Date, the Dividend Committee of
         the board of directors of Newpark shall determine the number of shares
         of Common Stock to be issued as a dividend on such Dividend Payment
         Date (the "Dividend Shares"). On the Business Day following such
         Dividend Payment Date, the Holder shall (i) provide to Newpark a report
         of Bloomberg, L.P. or a summary thereof, or an excerpt thereof prepared
         by the Holder, which shall include the volume-weighted average price of
         the Common Stock on the Dividend Payment Date ("Dividend Payment Market
         Value"), and (ii) transfer to Newpark by wire transfer of immediately
         available funds an amount (the "Withholding") equal to thirty percent
         (30%) of the amount determined by multiplying the number of Dividend
         Shares by the Dividend Payment Market Value. On or before the third
         Business Day following such Dividend Payment Date, Newpark shall remit
         the Withholding to the United States Internal Revenue Service

                                       13
<PAGE>   15

         ("I.R.S."), along with a completed Federal Deposit Tax Form 8109 (or
         any successor form thereto). In addition, Newpark shall file Forms 1042
         and 1042S (or any successor forms thereto) with the I.R.S. and provide
         a copy of the Form 1042S to the Holder. Provided, that no failure by
         the Holder to take any of the actions set forth in this section shall
         modify Newpark's obligations under the Certificate of Rights and
         Preferences or Newpark's right to withhold pursuant to Section 3(a) of
         the Certificate of Rights and Preferences; provided further that the
         Withholding payment under this Section 6(e) shall be in place of, and
         not in addition to, Newpark's withholding right under Section 3(a) of
         the Certificate of Rights and Preferences.

                           f. Floor and Ceiling Adjustment.

                                    (1) If at any time after the Closing Date
                           Newpark sells, transfers, issues or otherwise
                           obligates itself to deliver to any person or entity
                           (but excluding (i) issuances of shares, options or
                           other securities pursuant to a Benefit Plan; (ii)
                           transactions in which Newpark acquires the stock or
                           assets of another company for bona fide strategic
                           purposes and not for the purpose of circumventing
                           this Section 6(f); and (iii) issuances of shares upon
                           the conversion or exercise of any of the securities
                           set forth in Section 3(l) hereof or Schedule 3(l)
                           hereto) (each, a "Future Issuance") Common Stock of
                           Newpark, or options, warrants, convertible
                           debentures, convertible preferred stock or other
                           rights that are convertible or exchangeable into
                           Common Stock of Newpark (with or without the payment
                           of a conversion or exercise price) (each, "Future
                           Issuance Securities"), then (i) if, under the terms
                           of the Future Issuance or the Future Issuance
                           Securities, it is possible under any set of facts or
                           circumstances (including, but not limited to, any
                           market or other price of any of Newpark's securities
                           on any date or set of dates, but excluding
                           adjustments for stock splits, stock dividends,
                           reverse stock splits or other, similar events) for
                           the holder thereof or any third party to acquire,
                           directly or indirectly, Common Stock of Newpark for
                           aggregate consideration less than the Floor Price (as
                           such term is defined in the Certificate of Rights and
                           Preferences) per share of Common Stock, then on or
                           before the date of such Future Issuance, Newpark
                           shall amend the Certificate of Rights and Preferences
                           to reduce the Floor Price (as such term is defined in
                           the Certificate of Rights and Preferences) to such
                           lower price.

                                    (2) If Newpark makes a Future Issuance
                           (excluding (i) issuances of shares, options or other
                           securities pursuant to a Benefit Plan; (ii)
                           transactions in which Newpark acquires the stock or
                           assets of another company for bona fide strategic
                           purposes and not for the purpose of circumventing
                           this Section 6(f); (iii) issuances of shares upon the
                           conversion or exercise of any of the securities set
                           forth in Section 3(l)

                                       14
<PAGE>   16

                           hereof or Schedule 3(l) hereto; (iv) a sale of Common
                           Stock at a fixed price; and (v) a sale or other
                           issuance of Preferred Stock convertible at a fixed
                           price, the full consideration for which is paid upon
                           issuance thereof) and under the terms of the Future
                           Issuance Securities the maximum aggregate
                           consideration paid in cash or other separately
                           allocated consideration (provided that such
                           allocation is made in good faith) for such Future
                           Issuance Securities per underlying share of Common
                           Stock upon such Future Issuance plus the
                           consideration payable per share of Common Stock upon
                           exercise or conversion of such Future Issuance
                           Securities (assuming any market or other price of any
                           of Newpark's securities on any date or set of dates,
                           but excluding adjustments for stock splits, stock
                           dividends, reverse stock splits or other, similar
                           events) is less than the Ceiling Price (as such term
                           is defined in the Certificate of Rights and
                           Preferences), then on or before the date of such
                           Future Issuance, Newpark shall amend the Certificate
                           of Rights and Preferences to reduce the Ceiling Price
                           (as such term is defined in the Certificate of Rights
                           and Preferences) to such lower price. No further
                           adjustments to the Ceiling Price shall be made on or
                           after the date immediately following the thirtieth
                           (30th) consecutive Trading Day on which the Market
                           Price (as that term is defined in the Certificate of
                           Rights and Preferences) exceeds the Ceiling Price if
                           the Registration Statement is available with respect
                           to all Covered Securities on each such Trading Day.

                                    (3) Newpark shall notify Fletcher
                           immediately upon the occurrence of any Future
                           Issuance and any adjustment made under this Section
                           6(f).

                  7. Representations and Warranties of Fletcher. Fletcher hereby
represents and warrants to Newpark on the Closing Date:

                           a. Fletcher has been duly incorporated and is validly
         existing in good standing under the laws of Bermuda.

                           b. The execution, delivery and performance of this
         Agreement by Fletcher have been duly authorized by all requisite
         corporate action and no further consent or authorization of Fletcher,
         its Board of Directors or its shareholders is required. This Agreement
         has been duly executed and delivered by Fletcher and, when duly
         authorized, executed and delivered by Newpark, will be a valid and
         binding agreement enforceable against Fletcher in accordance with its
         terms, subject to bankruptcy, insolvency, reorganization, moratorium
         and similar laws of general applicability relating to or affecting
         creditors' rights generally and to general principles of equity.

                                       15
<PAGE>   17

                           c. Fletcher understands that no United States federal
         or state agency has passed on, reviewed or made any recommendation or
         endorsement of the Investment Securities.

                           d. Subject to Section 4 hereof, Fletcher understands
         that the Investment Securities have not been registered under the
         Securities Act and may not be re-offered or resold in the United States
         other than pursuant to registration thereunder or an available
         exemption therefrom.

                           e. Fletcher is an "accredited investor" as such term
         is defined in Regulation D promulgated under the Securities Act.

                           f. Fletcher is purchasing the Investment Securities
         for its own account for investment only and not with a view to, or for
         resale in connection with, the public sale or distribution thereof in
         the United States, except pursuant to sales registered under the
         Securities Act or an exemption therefrom.

                           g. Fletcher understands that the Investment
         Securities are being or will be offered and sold to it in reliance on
         specific exemptions from the registration requirements of United States
         federal securities laws and that Newpark is relying on the truth and
         accuracy of, and Fletcher's compliance with, the representations,
         warranties, agreements, acknowledgments and understandings of Fletcher
         set forth herein in order to determine the availability of such
         exemptions and the eligibility of Fletcher to acquire the Investment
         Securities.

                           h. As of the date of this Agreement, the
         consideration that Newpark is receiving from Fletcher is equivalent in
         value to the consideration Fletcher is receiving from Newpark pursuant
         to this Agreement. As of the date of this Agreement, under the terms of
         this Agreement, Newpark is receiving fair consideration from Fletcher
         for the agreements, covenants, representations and warranties made by
         Newpark to Fletcher.

                           i. Fletcher has had access to documents publicly
         filed with the SEC by Newpark, and has been given a reasonable
         opportunity to ask questions of Newpark's officers regarding publicly
         available information concerning Newpark.

                  8. Right of First Refusal. Subject to the terms and conditions
specified in this Section 8, Newpark hereby grants to (i) Fletcher, (ii) any
wholly-owned subsidiary or affiliate of Fletcher, or (iii) any of Fletcher's
designees, which designee, along with the entities in clauses (i) and (ii)
above, then holds not less than one-half of the number of shares of Series C
Preferred Stock originally issued pursuant to this Agreement (the "First Refusal
Stockholders"), a right of first offer, with respect to future sales by Newpark
of its Offered Shares (as hereinafter defined), which right of first offer shall
not become effective until the right of first refusal of the Series B
Convertible Preferred Stockholders pursuant to Section 8 of the May 30, 2000

                                       16
<PAGE>   18

Agreement is of no further force or effect pursuant to Section 8(e) of the May
30, 2000 Agreement. Each time Newpark has a bona fide proposal from a third
party to acquire any shares of, or securities convertible into or exercisable or
exchangeable for any shares of, any class of its capital stock ("Offered
Shares") and Newpark wishes to sell the Offered Shares to such third party,
Newpark shall first offer such Offered Shares to the First Refusal Stockholders
in accordance with the following provisions:

                           a. Newpark shall deliver a notice in accordance with
         Section 19 of this Agreement ("Offer Notice") to Fletcher stating (i)
         its bona fide intention to offer such Offered Shares, (ii) the number
         of such Offered Shares to be offered, (iii) the price and terms, if
         any, upon which it proposes to offer such Offered Shares, and (iv) the
         identity of the proposed purchasers of such shares and, if requested by
         Fletcher, such purchasers' affiliates and associates.

                           b. For ten (10) Trading Days after delivery of the
         Offer Notice, Newpark shall negotiate exclusively and in good faith
         with the First Refusal Stockholders with respect to the proposed sale
         of Offered Shares and Newpark shall not enter into or continue
         negotiations with, respond to, furnish information to, or consummate
         any transaction with any person or entity concerning any transaction
         regarding any shares of, or securities convertible into or exercisable
         or exchangeable for any shares of, any class of its capital stock.

                           c. Within ten (10) Trading Days after delivery of the
         Offer Notice, the First Refusal Stockholders may elect by delivering a
         written notice to Newpark, to purchase or obtain, at the price and on
         the terms specified in the Offer Notice (or on terms that are
         substantially similar to, or more favorable to Newpark than, the terms
         contained in the Offer Notice), all (and not less than all unless a
         third party agrees to purchase the remainder of such securities on
         terms that are substantially similar to, or more favorable to Newpark
         than, the terms contained in the Offer Notice) of the Offered Shares.
         If the Offer Notice specifies consideration other than cash is to be
         paid for the Offered Securities, the First Refusal Stockholders may, at
         their sole option, (if they choose to purchase such Offered Shares)
         deliver either of (i) such consideration or (ii) cash equal to the fair
         market value of such consideration on the date and at the time such
         offer is accepted. The closing of any such transaction shall occur not
         later than ten (10) Trading Days after Newpark receives written notice
         of such election. If the First Refusal Stockholders do not so elect
         within ten (10) days after delivery of the Offer Notice, then Newpark
         may sell the Offered Shares to any Person at the price and on terms
         that are no less favorable to Newpark than the terms contained in the
         Offer Notice within seventy (70) days after the date of the Offer
         Notice.

                           d. The right of first offer in this Section 8 shall
         not be applicable to any issuance or sale of any of the following
         securities:

                                       17
<PAGE>   19

                                    (i) Common Stock issued as consideration for
                  the acquisition of at least fifty percent (50%) of the voting
                  capital stock or assets of a bona fide operating company in a
                  similar or complementary line of business to that of Newpark,
                  as determined reasonably and in good faith by Newpark's board
                  of directors whether through purchase, merger, consolidation,
                  tender offer or otherwise, provided that the purpose of
                  Newpark entering into any such transaction shall not be to
                  raise capital, directly or indirectly, or otherwise to avoid
                  the requirements of this Section 8,

                                    (ii) Common Stock issued pursuant to any
                  stock split, dividend or distribution payable in additional
                  shares of Common Stock or other securities or rights
                  convertible into, or entitling the holder thereof to receive
                  directly or indirectly, additional shares of Common Stock
                  without payment of any consideration by such holder,

                                    (iii) Common Stock issuable or issued to
                  employees, consultants or directors of Newpark directly or
                  pursuant to a stock option plan, employee stock purchase plan
                  or restricted stock plan, or other similar arrangements
                  related to compensation for services in effect on the date of
                  this Agreement or approved by Newpark's stockholders, in each
                  case in the ordinary course of business consistent with
                  Newpark's past practice,

                                    (iv) Common Stock issued in a bona fide firm
                  commitment underwritten offering to the public with net
                  proceeds of at least $25,000,000 to Newpark, after
                  underwriter's discounts or commissions and other fees or
                  expenses,

                                    (v) Common Stock issued as dividends on, or
                  upon conversion of, Newpark's Series A Cumulative Perpetual
                  Preferred Stock and Series B Convertible Preferred Stock, in
                  each case outstanding as of the date of this Agreement;

                                    (vi) Common Stock issuable under the warrant
                  issued pursuant to the May 30, 2000 Agreement or the warrant
                  issued to SCF-IV, L.P.; or

                                    (vii) Common Stock issued in connection with
                  a Combination.

                           (e) The right of first offer hereunder shall be of no
         further force or effect from and after the first day upon which the
         Registrable Amount when added to the Registrable Number (as that term
         is defined in the May 30, 2000 Agreement) is less than five percent
         (5%) of the Original Number, as such numbers may be adjusted for stock
         splits, stock dividends, reverse stock splits, recapitalizations or
         other, similar adjustments.

                                       18
<PAGE>   20

                  9. Covenants of Newpark. Newpark covenants and agrees with
Fletcher as follows:

                           a. For so long as Fletcher owns any Investment
         Securities, and in any case for a period of one (1) year thereafter,
         Newpark will use its best efforts to (i) maintain the eligibility of
         the Common Stock for listing on the New York Stock Exchange and (ii)
         regain the eligibility of the Common Stock for listing or quotation on
         all markets and exchanges including the New York Stock Exchange in the
         event that the Common Stock is delisted by the New York Stock Exchange
         or any other applicable market or exchange; and will use commercially
         reasonable efforts to (iii) cause the representations and warranties
         contained in Section 3 to be and remain true and correct.

                           b. Newpark will provide Fletcher with an opportunity
         to review and comment on any public disclosure by Newpark of
         information regarding this Agreement and the transactions contemplated
         hereby, prior to such public disclosure. Beginning on the date hereof
         and for so long as Fletcher owns any Investment Securities and for a
         period of ninety (90) days thereafter, Newpark will (i) promptly notify
         Fletcher immediately following any public disclosure by Newpark of
         material information regarding Newpark or its financial condition,
         prospects or results of operation and (ii) provide Fletcher with copies
         of all SEC filings.

                           c. As soon as such information is available (but in
         no event later than two weeks after the Closing Date), Newpark shall
         deliver to Fletcher a written notice stating the number of outstanding
         shares of Common Stock as of the Closing Date.

                           d. Newpark will make all filings required by law with
         respect to the transactions contemplated hereby;

                           e. Newpark will comply with the terms and conditions
         of the Preferred Shares as set forth in the Certificate of Rights and
         Preferences, and will not amend the Certificate of Rights and
         Preferences without Fletcher's express written consent.

                           f. Prior to the filing of each of its quarterly
         reports on Form 10-Q with the SEC, Newpark shall cause Arthur Andersen
         LLP to deliver to Fletcher a review report relating to the final
         consolidated unaudited financial statements contained therein, prepared
         in accordance with Statements of Auditing Standard No. 71.

                           g. If on any date the Registrable Amount exceeds
         eighty percent (80%) of the number of Common Shares then reserved for
         issuance, then Newpark shall reserve for issuance within three (3)
         Trading Days of such date a number of Common Shares not less than the
         Registrable Amount.

                                       19
<PAGE>   21

                           h. Newpark shall use its best efforts to ensure that
         all Common Shares issued and issuable under this Agreement (including
         all shares issued or issuable under the Preferred Shares on an
         as-converted basis) become listed and/or quoted and admitted for
         trading as soon as practicable and thereafter remain listed and/or
         quoted. Moreover, Newpark will immediately notify Fletcher in writing,
         pursuant to Section 19, once such shares are duly listed or quoted or
         in the event that any such shares are delisted or removed from
         quotation. If any such shares are delisted or removed from quotation,
         Newpark shall use its best efforts to cause such shares to again be
         listed or quoted at the earliest possible date.

                           i. Newpark shall use commercially reasonable efforts
         to maintain the eligibility of the Common Shares for book-entry
         transfer through The Depository Trust Company (or any successor
         thereto) as soon as practicable after the date of this Agreement.

                  10. Consolidation, Merger, Etc. In case Newpark shall be a
party to any transaction with any other entity or entities (the "Acquirer")
providing for (i) any acquisition of Newpark by means of merger or other form of
corporate reorganization in which outstanding shares of Newpark are exchanged
for securities or other consideration issued, or caused to be issued, by the
acquiring entity or its subsidiary or (ii) a sale of all or substantially all of
the assets of Newpark (on a consolidated basis) in a single transaction or
series of related transactions or (iii) any other transaction or series of
related transactions by Newpark in which the power to cast the majority of the
eligible votes at a meeting of Newpark's stockholders at which directors are
elected is transferred to a single entity or group acting in concert (each of
the foregoing being referred to as a "Combination"), Fletcher and its assigns
shall have the rights set forth in the Certificate of Rights and Preferences
regarding Combinations in addition to the rights contained in this Agreement.
Newpark agrees that it will not enter into an agreement with an Acquirer for a
Combination unless such agreement expressly obligates the Acquirer to assume all
of Newpark's obligations under this Agreement and the Certificate of Rights and
Preferences and to give Fletcher written notice that the Acquirer has assumed
such obligations. Newpark shall provide Fletcher with written notice of any
proposed Combination as soon as the existence of a proposed Combination is made
public by any person, and shall notify Fletcher promptly of any material
developments with respect to such Combination, including reasonable advance
notice of the date the Combination is expected to become effective.

                  11. Covenants of Fletcher. Fletcher hereby covenants and
agrees with Newpark that:

                           a. Neither Fletcher nor any of its affiliates nor any
         person acting on its or their behalf will at any time offer or sell any
         Investment Securities other than pursuant to registration under the
         Securities Act or pursuant to an available exemption therefrom.

                                       20
<PAGE>   22

                           b. Fletcher shall not engage an underwriter for an
         underwritten public offering of Common Shares, unless such underwriter
         shall be reasonably satisfactory to Newpark.

                  12. Legend. Subject to Section 4, Fletcher understands that
the certificates or other instruments representing the Investment Securities
shall bear a restrictive legend in the following form (and a stop transfer order
may be placed against transfer of such certificates or other instruments):

         THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED
         UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), OR
         APPLICABLE STATE SECURITIES LAWS. THE SECURITIES HAVE BEEN ACQUIRED FOR
         INVESTMENT AND MAY NOT BE OFFERED FOR SALE, SOLD, TRANSFERRED OR
         ASSIGNED UNLESS (1) THERE IS AN EFFECTIVE REGISTRATION STATEMENT UNDER
         SUCH ACT COVERING SUCH SECURITIES, OR (2) THE SALE IS MADE IN
         ACCORDANCE WITH RULE 144 OR ANOTHER APPLICABLE EXEMPTION UNDER THE
         SECURITIES ACT.

                  The legend set forth above shall be removed and Newpark shall
issue a certificate without such legend to any holder of Investment Securities
if, unless otherwise required by state securities laws, (a) such shares are sold
pursuant to an effective Registration Statement under the Securities Act, or (b)
such holder provides Newpark with an opinion of counsel reasonably satisfactory
to Newpark that such shares may be publicly sold pursuant to an exemption from
such registration requirements without restriction.

                  13. Conditions Precedent to Fletcher's Obligations. The
obligations of Fletcher hereunder are subject to the performance by Newpark of
its obligations hereunder and to the satisfaction of the following additional
conditions precedent, unless expressly waived in writing by Fletcher:

                           a. On the Closing Date, (i) the representations and
         warranties made by Newpark in this Agreement shall be true and correct;
         (ii) Newpark shall have complied fully with all of the covenants and
         agreements in this Agreement; and (iii) Fletcher shall have received a
         certificate of the Chief Executive Officer and the Chief Financial
         Officer of Newpark dated such date and to such effect.

                           b. On the Closing Date, Newpark shall have delivered
         to Fletcher an opinion of Ervin, Cohen & Jessup LLP reasonably
         satisfactory to Fletcher, dated the date of delivery, confirming in
         substance the matters covered in paragraphs (a), (b), (c), (d), (e) and
         (f) of Section 3 hereof and to the effect that the offer and sale of
         the Investment Securities to Fletcher hereunder do not require
         registration under the Securities Act.

                                       21
<PAGE>   23

                           c. On the Closing Date, Fletcher shall have received
         a letter from Arthur Andersen LLP to the effect that, as of such date,
         it consents to the inclusion in this Agreement of its portion of the
         Auditor Report.

                  14. Conditions Precedent to Newpark's Obligations. The
obligations of Newpark hereunder are subject to the performance by Fletcher of
its obligations hereunder and to the satisfaction (unless expressly waived in
writing by Newpark) of the additional conditions precedent that, on the Closing
Date: (i) the representations and warranties made by Fletcher in this Agreement
shall be true and correct; (ii) Fletcher shall have complied fully with all the
covenants and agreements in this Agreement; (iii) Newpark shall have received on
such date a certificate of an appropriate officer or director of Fletcher dated
such date and to such effect; and (iv) Newpark shall have received on such date
from the sole stockholder of Series B Convertible Preferred Stock a waiver in
the form of Annex G.

                  15. Fees and Expenses. Each of Fletcher and Newpark agrees to
pay its own expenses incident to the performance of its obligations hereunder,
including, but not limited to the fees, expenses and disbursements of such
party's counsel, except as is otherwise expressly provided in this Agreement.

                  16. Non-Performance. If on the Closing Date Newpark shall fail
to deliver the Investment Securities to Fletcher required to be delivered
pursuant to this Agreement for any reason other than the failure of any
condition precedent to Newpark's obligations hereunder or the failure by
Fletcher to comply with its obligations hereunder, then Newpark shall:

                           a. indemnify and hold Fletcher harmless against any
         loss, claim or damage (including without limitation, incidental and
         consequential damages) arising from or as a result of such failure by
         Newpark; and

                           b. reimburse Fletcher for all of its reasonable
         out-of-pocket expenses, including, without limitation, fees and
         disbursements of its counsel, incurred by Fletcher in connection with
         this Agreement and the transactions contemplated herein and therein.

                  17. Indemnification.

                           a. Indemnification of Fletcher. Newpark hereby agrees
         to indemnify Fletcher and each of its officers, directors, employees,
         agents and affiliates and each person that controls (within the meaning
         of Section 20 of the Exchange Act) any of the foregoing persons (each a
         "Fletcher Indemnified Party") against any claim, demand, action,
         liability, damages, loss, cost or expense (including, without
         limitation, reasonable legal fees and expenses) (a "Proceeding"), that
         it may incur in connection with any of the transactions contemplated
         hereby arising out of or based upon:

                                       22
<PAGE>   24

                                    (1) any untrue or alleged untrue statement
                           of a material fact in any Registration Statement, the
                           Prospectus or any SEC Filing incorporated by
                           reference into a Registration Statement or any SEC
                           Filing made after the date of this Agreement and
                           before any Registration Statement is filed with the
                           SEC or this Agreement by Newpark or any of its
                           affiliates or any person acting on its or their
                           behalf or omission or alleged omission to state
                           therein or herein any material fact necessary in
                           order to make the statements, in the light of the
                           circumstances under which they were made, not
                           misleading by Newpark or any of its affiliates or any
                           person acting on its or their behalf;

                                    (2) any of the representations or warranties
                           made by Newpark herein or under the Certificate of
                           Rights and Preferences being untrue or incorrect at
                           the time such representation or warranty was made;
                           and

                                    (3) any breach or non-performance by Newpark
                           of any of its covenants, agreements or obligations
                           under this Agreement;

         and Newpark hereby agrees to reimburse each Fletcher Indemnified Party
         for any reasonable legal or other expenses incurred by such Fletcher
         Indemnified Party in investigating or defending any such Proceeding;
         provided, however, that the foregoing indemnity shall not apply to any
         Proceeding to the extent that it arises out of or is based upon the
         gross negligence or wilful misconduct of Fletcher in connection
         therewith. Furthermore, the foregoing indemnity rights will not take
         effect unless or until the total amount of the indemnification in the
         aggregate is $10,000 or greater.

                           b. Indemnification of Newpark. Fletcher hereby agrees
         to indemnify Newpark and each of its officers, directors, employees,
         agents and affiliates and each person that controls (within the meaning
         of Section 20 of the Exchange Act) any of the foregoing persons (each a
         "Newpark Indemnified Party") against any Proceeding, that it may incur
         in connection with any of the transactions contemplated hereby arising
         out of or based upon:

                                    (1) any untrue or alleged untrue statement
                           of a material fact by Fletcher or any of its
                           affiliates or any person acting on its or their
                           behalf or omission or alleged omission to state any
                           material fact necessary in order to make the
                           statements, in the light of the circumstances under
                           which they were made, not misleading by Fletcher or
                           any of its affiliates or any person acting on its or
                           their behalf;

                                    (2) any of the representations or warranties
                           made by Fletcher herein being untrue or incorrect at
                           the time such representation or warranty was made;
                           and

                                       23
<PAGE>   25

                                    (3) any breach or non-performance by
                           Fletcher of any of its covenants, agreements or
                           obligations under this Agreement;

         and Fletcher hereby agrees to reimburse each Newpark Indemnified Party
         for any reasonable legal or other expenses incurred by such Newpark
         Indemnified Party in investigating or defending any such Proceeding;
         provided, however, that the foregoing indemnity shall not apply to any
         Proceeding to the extent that it arises out of or is based upon the
         gross negligence or wilful misconduct of Newpark in connection
         therewith. Furthermore, the foregoing indemnity rights will not take
         effect unless or until the total amount of the indemnification in the
         aggregate is $10,000 or greater.

                           c. Conduct of Claims.

                                    (1) Whenever a claim for indemnification
                           shall arise under this Section 17, the party seeking
                           indemnification (the "Indemnified Party"), shall
                           notify the party from whom such indemnification is
                           sought (the "Indemnifying Party") in writing of the
                           Proceeding and the facts constituting the basis for
                           such claim in reasonable detail;

                                    (2) Upon delivery of such notice, such
                           Indemnified Party shall have a duty to take all
                           reasonable steps to mitigate any losses, liabilities,
                           costs, charges and expenses relating to any such
                           Proceeding;

                                    (3) Such Indemnifying Party shall have the
                           right to retain the counsel of its choice in
                           connection with such Proceeding and to participate at
                           its own expense in the defense of any such
                           Proceeding; provided, however, that counsel to the
                           Indemnifying Party shall not (except with the consent
                           of the relevant Indemnified Party) also be counsel to
                           such Indemnified Party. In no event shall the
                           Indemnifying Party be liable for fees and expenses of
                           more than one counsel (in addition to any local
                           counsel) separate from its own counsel for all
                           Indemnified Parties in connection with any one action
                           or separate but similar or related actions in the
                           same jurisdiction arising out of the same general
                           allegations or circumstances; and

                                    (4) No Indemnifying Party shall, without the
                           prior written consent of the Indemnified Parties
                           (which consent shall not be unreasonably withheld),
                           settle or compromise or consent to the entry of any
                           judgment with respect to any litigation, or any
                           investigation or proceeding by any governmental
                           agency or body, commenced or threatened, or any claim
                           whatsoever in respect of which indemnification could
                           be sought under this Section unless such settlement,
                           compromise or consent (A)

                                       24
<PAGE>   26

                           includes an unconditional release of each Indemnified
                           Party from all liability arising out of such
                           litigation, investigation, proceeding or claim and
                           (B) does not include a statement as to or an
                           admission of fault, culpability or a failure to act
                           by or on behalf of any Indemnified Party.

                  18. Survival of the Representations, Warranties, etc. The
respective representations, warranties, and agreements made herein by or on
behalf of the parties hereto shall remain in full force and effect, regardless
of any investigation made by or on behalf of the other party to this Agreement
or any officer, director or employee of, or person controlling or under common
control with, such party and will survive delivery of and payment for any
Investment Securities issuable hereunder.

                  19. Notices. All communications hereunder shall be in writing
and delivered as set forth below.

                           a. If sent to Fletcher, all communications shall be
         delivered by hand, sent by reputable overnight courier or transmitted
         and confirmed by facsimile to Fletcher, unless otherwise notified in
         writing of a substitute address, at:

                              Fletcher International, Ltd.
                              c/o A. S. & K. Services Ltd.
                              Cedar House
                              41 Cedar Avenue
                              Hamilton HM EX
                              Bermuda
                              Attention:  Felicity Holmes, Corporate
                                          Administrator
                              Telephone:  441-295-2244
                              Facsimile:  441-292-8666

                              with a copy to:

                              Fletcher Asset Management
                              22 East 67th Street
                              New York, NY 10021
                              Attention:  Peter Zayfert
                              Telephone:  (212) 284-4800
                              Facsimile:  (212) 284-4801

                                       25
<PAGE>   27

                              with a copy to:

                              Skadden, Arps, Slate, Meagher & Flom LLP
                              1440 New York Avenue, N.W.
                              Washington, D.C. 20005
                              Attention:  Stephen W. Hamilton, Esq.
                              Telephone:  (202) 371-7010
                              Facsimile:  (202) 393-5760

         To the extent that any funds shall be delivered to Fletcher by wire
         transfer, unless otherwise instructed by Fletcher, such funds should be
         delivered in accordance with the following wire instructions:

                              Fletcher International, Ltd.
                              Bank:        HSBC Bank USA, New York, NY
                              ABA Number:           021-001-088
                              For the benefit of:   Lehman Brothers Inc.
                              Account Number:       140-094-221
                              For credit to:        Fletcher International, Ltd.
                              Account Number:       134-705-874

                           b. If sent to Newpark, all communications shall be
         delivered by hand, sent by reputable overnight courier or transmitted
         and confirmed by facsimile to Newpark, unless otherwise notified in
         writing of a substitute address, at:

                              Newpark Resources, Inc.
                              3850 North Causeway Boulevard
                              Suite 1770
                              Metairie, Louisiana 70002
                              Attention:  Matthew W. Hardey
                              Telephone:  (504) 838-8222
                              Facsimile:  (504) 833-9506

                                       26
<PAGE>   28

                              with a copy to:

                              Ervin, Cohen & Jessup LLP
                              9401 Wilshire Boulevard
                              Ninth Floor
                              Beverly Hills, California  90212
                              Attention:     Bertram K. Massing, Esq.
                              Telephone:     (310) 273-6333
                              Facsimile:     (310) 859-2325

         To the extent that any funds shall be delivered to Newpark by wire
         transfer, unless otherwise instructed by Newpark, such funds should be
         delivered in accordance with the following wire instructions:

                              Newpark Resources, Inc.
                              Account Number:     552-700-16-9870-1
                              ABA Number:         065400137
                              Bank:               Bank One Louisiana NA
                              Account Name:       Newpark Resources, Inc.

                  20. Miscellaneous.

                           a. This Agreement may be executed in one or more
         counterparts and it is not necessary that signatures of all parties
         appear on the same counterpart, but such counterparts together shall
         constitute but one and the same agreement.

                           b. This Agreement shall inure to the benefit of and
         be binding upon the parties hereto, their respective successors and
         assigns and, with respect to Section 17 hereof, shall inure to the
         benefit of their respective officers, directors, employees, agents,
         affiliates and controlling persons, and no other person shall have any
         right or obligation hereunder. Newpark may not assign this Agreement.
         Fletcher may assign, pledge, hypothecate or transfer any of the rights
         and associated obligations contemplated by this Agreement (including,
         but not limited to, the Preferred Shares and the Common Shares), in
         whole or in part, at its sole discretion (including, but not limited
         to, assignments, pledges, hypothecations and transfers in connection
         with hedging transactions with respect to this Agreement, the Preferred
         Shares and the Common Shares), provided that any such assignment,
         pledge, hypothecation or transfer must comply with applicable federal
         and state securities laws. No Person acquiring Common Stock from
         Fletcher pursuant to a public market purchase shall thereby obtain any
         of the rights contained in this Agreement.

                           c. This Agreement shall be governed by, and construed
         in accordance with, the internal laws of the State of New York, and
         each of the parties hereto hereby

                                       27
<PAGE>   29

         submits to the non-exclusive jurisdiction of any State or Federal court
         in the State of New York and any court hearing any appeal therefrom,
         over any suit, action or proceeding against it arising out of or based
         upon this Agreement (a "Related Proceeding"). Each of the parties
         hereto hereby waives any objection to any Related Proceeding in such
         courts whether on the grounds of venue, residence or domicile or on the
         ground that the Related Proceeding has been brought in an inconvenient
         forum.

                           d. The parties shall take all actions reasonably
         necessary to cause the transactions contemplated hereby to be
         consummated in accordance with the terms hereof.

                           e. The headings of the sections of this document have
         been inserted for convenience of reference only and shall not be deemed
         to be a part of this Agreement. This Agreement constitutes the entire
         agreement and supersedes all prior agreements and understandings, both
         written and oral, between the parties hereto with respect to the
         subject matter of this Agreement. Except as provided in Section 20(b),
         this Agreement is not intended to confer upon any person other than the
         parties hereto any rights or remedies hereunder.

                           f. Each party represents and acknowledges that, in
         the negotiation and drafting of this Agreement and the other
         instruments and documents required or contemplated hereby, it has been
         represented by and relied upon the advice of counsel of its choice.
         Each party hereby affirms that its counsel has had a substantial role
         in the drafting and negotiation of this Agreement and such other
         instruments and documents. Therefore, each party agrees that no rule of
         construction to the effect that any ambiguities are to be resolved
         against the drafter shall be employed in the interpretation of this
         Agreement and such other instruments and documents.

                           g. Without prejudice to other rights or remedies
         hereunder (including any specified interest rate), and except as
         otherwise expressly set forth herein, interest shall be due on any
         amount that is due pursuant to this Agreement and has not been paid
         when due, calculated for the period from and including the due date to
         but excluding the date on which such amount is paid at the prime rate
         of U.S. money center banks as published in The Wall Street Journal (or
         if The Wall Street Journal does not exist or publish such information,
         then the average of the prime rates of three U.S. money center banks
         agreed to by the parties) plus two percent (2%).

                           h. Fletcher and Newpark stipulate that the remedies
         at law of the parties hereto in the event of any default or threatened
         default by the either party in the performance of or compliance with
         any of the terms of this Agreement and the Certificate of Rights and
         Preferences are not and will not be adequate and that, to the fullest
         extent permitted by law, such terms may be specifically enforced by a
         decree for the specific

                                       28
<PAGE>   30

         performance of any agreement contained herein or by an injunction
         against a violation of any of the terms hereof or otherwise.

                           i. Any and all remedies set forth in this Agreement
         and the Certificate of Rights and Preferences: (i) shall be in addition
         to any and all other remedies Fletcher or Newpark may have at law or in
         equity, (ii) shall be cumulative, and (iii) may be pursued successively
         or concurrently as each of Fletcher and Newpark may elect. The exercise
         of any remedy by Fletcher or Newpark shall not be deemed an election of
         remedies or preclude Fletcher or Newpark, respectively, from exercising
         any other remedies in the future.

                  21. HSR Act Notification. If in the event that filings are
required under the Hart-Scott-Rodino Improvements Act of 1976, as amended (the
"HSR Act") so that Fletcher may acquire the Investment Securities, Newpark will
upon the written request of Fletcher, and Fletcher will upon the written request
of Newpark, (i) file or cause to be filed, as promptly as practicable after the
receipt of such notice and in no event later than fifteen Business Days after
the receipt of such notice, with the Federal Trade Commission and the United
States Department of Justice, all reports and other documents required to be
filed by such party under the HSR Act concerning the transactions contemplated
in such notice, (ii) promptly comply with or cause to be complied with any
requests by the Federal Trade Commission or the United States Department of
Justice for additional information so that the waiting period applicable thereto
under the HSR Act shall expire as soon as practicable, and (iii) cooperate with
the other parties in requesting early termination of any applicable waiting
period under the HSR Act. Each of Fletcher and Newpark shall pay half of the
filing fees required in connection with any such filing. Each party shall bear
its own legal and other expenses incurred in connection with any such filing.

                  22. Newpark's Obligations. Newpark agrees that the parties
have negotiated in good faith and at arms' length concerning the transactions
contemplated herein, and that Fletcher would not have agreed to the terms of
this Agreement without each and every of the terms, conditions, protections and
remedies provided herein and in the Certificate of Rights and Preferences.
Except as specifically provided otherwise in this Agreement or in the
Certificate of Rights and Preferences, Newpark's obligations to indemnify and
hold Fletcher harmless in accordance with Section 17 of this Agreement are
obligations of Newpark that Newpark promises to pay to Fletcher when and if they
become due. Newpark shall record any such obligations on its books and records
in accordance with Generally Accepted Accounting Principles.

                  23. Time of Essence. Time shall be of the essence in this
Agreement.

                            [SIGNATURE PAGE FOLLOWS]

                                       29
<PAGE>   31

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

                                      NEWPARK RESOURCES, INC.

                                      By:    /s/ Matthew W. Hardey
                                             ---------------------------------
                                      Name:  Matthew W. Hardey
                                      Title: V.P. Finance and CFO

                                      FLETCHER INTERNATIONAL, LTD.,
                                      by its duly authorized investment advisor,
                                      FLETCHER ASSET MANAGEMENT, INC.

                                      By:    /s/ Mei-Ying Tsai
                                             ---------------------------------
                                      Name:  Mei-Ying Tsai
                                      Title: Chief Financial Officer

                                      By:    /s/ Denis J. Kielg
                                             ---------------------------------
                                      Name:  Denis J. Kielg
                                      Title: Deputy CEO

                           [AGREEMENT SIGNATURE PAGE]

<PAGE>   32

                                                                         ANNEX A

                 [FORM OF CERTIFICATE OF RIGHTS AND PREFERENCES
                    OF CLASS C CONVERTIBLE PREFERRED STOCK OF
                            NEWPARK RESOURCES, INC.]

                                       A-1

<PAGE>   33

                                                                         ANNEX B

                            [FORM OF DELIVERY NOTICE]

                                     [date]

Fletcher International, Ltd.
c/o Fletcher Asset Management
22 East 67th Street
New York, NY 10021
Attn: Peter Zayfert
Telephone:       (212) 284-4800
Facsimile:       (212) 284-4801

Ladies and Gentlemen:

         Reference is made to the Agreement (the "Agreement") dated as of
December 27, 2000 by and between Newpark Resources, Inc. ("Newpark") and
Fletcher International, Ltd. ("Fletcher"). Capitalized terms not otherwise
defined herein shall have the meanings ascribed thereto in the Agreement.

         Attached are copies of the front and back of the six (6) original stock
certificates, each representing 20,000 shares of Series C Preferred Stock,
purchased by Fletcher on the date hereof, together with a copy of the overnight
courier air bill which will be used to ship such stock certificates. We have the
executed original stock certificates and other documents required to be
delivered in connection with the Closing Date. Upon our confirmation of the
payment of the $30,000,000 aggregate purchase price therefor, we will send the
original stock certificates by overnight courier to the following address:

               Ms. Michelle Hogan
               c/o Lehman Brothers Inc.
               Three World Financial Center
               New York, NY 10285
               Telephone: (212) 526-9040

                                       B-1

<PAGE>   34

and we will send the other original documents by overnight courier to the
following address:

                             Fletcher International, Ltd.
                             c/o A. S. & K. Services Ltd.
                             Cedar House
                             41 Cedar Avenue
                             Hamilton HM EX
                             Bermuda
                             Attention: Felicity Holmes, Corporate Administrator
                             Telephone: 441-295-2244
                             Facsimile: 441-292-8666

                             with a copy to:

                             Fletcher International, Ltd.
                             c/o Fletcher Asset Management
                             22 East 67th Street
                             New York, NY 10021
                             Attn: Peter Zayfert

         Attached hereto as Exhibit 1 is a true, correct and complete copy of
the most recent report of Arthur Andersen LLP to the Board of Directors and
Shareholders of Newpark, together with the accompanying consolidated financial
statements and schedules of Newpark, as such report appears in the most recent
Annual Report on Form 10-K filed by Newpark with the SEC, as well as all
Quarterly Reports on Form 10-Q filed by Newpark with the SEC since the date of
such Form 10-K, together with all amendments thereto.

                                        NEWPARK RESOURCES, INC.

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

                                       B-2

<PAGE>   35

                                                                       EXHIBIT 1

                                 AUDITOR REPORT

                                 [see attached]

                                       B-3

<PAGE>   36

                                                                         ANNEX C

                                 Auditor Report

                                       C-1

<PAGE>   37

                                                                         ANNEX D

                   [FORM OF PREFERRED STOCK CONVERSION NOTICE]

                                     [date]

Newpark Resources, Inc.
Suite 1770
3850 North Causeway Boulevard
Metairie, Louisiana 70002
Attention: [Chief Financial Officer]
Telephone:
Facsimile:

Ladies and Gentlemen:

         Reference is made to the Agreement (the "Agreement") dated as of
December 27, 2000 by and between Newpark Resources, Inc. ("Newpark") and
Fletcher International, Ltd. ("Fletcher"). Capitalized terms not otherwise
defined herein shall have the meanings ascribed thereto in the Agreement.

         Fletcher hereby elects to convert _________ shares of Series C
Preferred Stock into ________ shares of Common Stock at a Conversion Price (as
defined in the Certificate of Rights and Preferences) of ____________. In
accordance with Section 6 of the Certificate of Rights and Preferences, such
shares of Common Stock shall be delivered to Fletcher [in uncertificated form by
book-entry transfer] [in certificated form at the address specified below:]

         [delivery address to be added, if applicable:
               Lehman Brothers Inc.
               Three World Financial Center
               New York, NY 10285
               Attn: Michelle Hogan
               Telephone: (212) 526-9040]

                                   FLETCHER INTERNATIONAL, LTD.,
                                   by its duly authorized investment advisor,
                                   FLETCHER ASSET MANAGEMENT, INC.

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

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

AGREED AND ACKNOWLEDGED:
NEWPARK RESOURCES, INC.

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

                                       D-1

<PAGE>   38

                                                                         ANNEX E

              [FORM OF PREFERRED STOCK CONVERSION DELIVERY NOTICE]

                                     [date]

Fletcher International, Ltd.
c/o Fletcher Asset Management
22 East 67th Street
New York, NY 10021
Attn: Peter Zayfert
Telephone: (212) 284-4800
Facsimile: (212) 284-4801

Ladies and Gentlemen:

         Reference is made to the Agreement (the "Agreement") dated as of
December 27, 2000 by and between Newpark Resources, Inc. ("Newpark") and
Fletcher International, Ltd. ("Fletcher"). Capitalized terms not otherwise
defined herein shall have the meanings ascribed thereto in the Agreement.

         This notice confirms that _________ shares of Series C Preferred Stock
have been converted by Fletcher into ________ shares of Common Stock at a
Conversion Price (as defined in the Certificate of Rights and Preferences) of
____________. [If the shares are being delivered by book entry transfer, insert
the following -- Such shares of Common Stock have been delivered to Fletcher in
uncertificated form by book-entry transfer.] [If the shares are being delivered
in physical form to the holder, insert the following -- Attached are copies of
the front and back of the ____ original stock certificates, each representing
______ shares of Common Stock, together with a copy of the overnight courier air
bill which will be used to ship such stock certificates. We will send the
original stock certificates by overnight courier to the following address:

                         Lehman Brothers Inc.
                         Three World Financial Center
                         New York, NY 10285
                         Attn:  Michelle Hogan
                         Telephone: (212) 526-9040

                                       E-1

<PAGE>   39

                         with a copy to:

                         Fletcher International, Ltd.
                         c/o Fletcher Asset Management
                         22 East 67th Street
                         New York, NY 10021
                         Attn: Peter Zayfert
                         Telephone:       (212) 284-4800
                         Facsimile:       (212) 284-4801

         [If Preferred Stock certificates tendered by Fletcher are not being
fully converted, insert the following-Also attached are copies of the front and
back of the original stock certificate representing ______ shares of Series C
Preferred Stock, representing the unconverted portion of the tendered Series C
Preferred Stock certificates, together with a copy of the overnight courier air
bill which will be used to ship such stock certificate. We will send the
original stock certificate by overnight courier to Lehman Brothers Inc. at the
address set forth in the previous paragraph.]

                                   NEWPARK RESOURCES, INC.

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

                                       E-2

<PAGE>   40

                                                                         ANNEX F

                         [FORM OF EXCESS RIGHTS NOTICE]

                                                  -------------, --

Newpark Resources, Inc.
Suite 1770
3850 North Causeway Boulevard
Metairie, Louisiana 70002
Attention: [Chief Financial Officer]

Ladies and Gentlemen:

         Fletcher International, Ltd. ("Fletcher") hereby elects to exercise its
right to convert some or all of its Preferred Shares (as defined in the
Agreement (the "Agreement")) dated as of December 27, 2000 by and between
Newpark Resources, Inc. ("Newpark") and Fletcher and, in lieu of receipt of
________ Common Shares upon conversion of _______ Preferred Shares, hereby
requests creation of Excess Rights with a stated value of $________ in
accordance with the terms of the Agreement. Capitalized terms not otherwise
defined herein shall have the meanings ascribed thereto in the Agreement.

                                   FLETCHER INTERNATIONAL, LTD.,
                                   by its duly authorized investment advisor,
                                   FLETCHER ASSET MANAGEMENT, INC.

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

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

AGREED AND ACKNOWLEDGED:
NEWPARK RESOURCES, INC.

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

                                       F-1

<PAGE>   41

                                                                         ANNEX G

                            [FORM OF WRITTEN CONSENT]

         The undersigned, being the sole stockholder of the Series B Convertible
Preferred Stock of NEWPARK RESOURCES, INC., a Delaware corporation ("Newpark"),
hereby consents, pursuant to Section 5(E) of the Certificate of Rights and
Preferences of Series B Convertible Preferred Stock of Newpark, to (i) the
creation of a new series of Preferred Stock to be designated "Series C
Convertible Preferred Stock" with terms as set forth in the attached Certificate
of Rights and Preferences of Series C Convertible Preferred Stock of Newpark and
(ii) the issuance of such stock in each case as set forth in the Agreement dated
as of December 27, 2000, by and between Newpark and Fletcher International,
Ltd., provided that such consent shall be limited to the issuance specifically
provided for therein. The undersigned further agrees that neither the issuance
of the Series C Convertible Preferred Stock pursuant to the terms of said
Agreement, nor any conversion of the Series C Convertible Preferred Stock, shall
result in any adjustment in the number of shares of Common Stock the undersigned
shall be entitled to receive upon exercise or the exercise price under the terms
of the Warrant Certificate, dated June 1, 2000 issued to the undersigned, the
undersigned hereby waiving the provisions of Section 2 of said Warrant
Certificate solely with respect to such issuance.

                            [SIGNATURE PAGE FOLLOWS]

                                       G-1

<PAGE>   42

         IN WITNESS WHEREOF, the undersigned has executed this Written Consent
as of the _______ day of December, 2000.

                                   FLETCHER INTERNATIONAL LIMITED,
                                   by its duly authorized investment advisor,
                                   FLETCHER ASSET MANAGEMENT, INC.

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

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

                                      G-2

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