WEATHERFORD ENTERRA INC
S-8, 1995-10-05
OIL & GAS FIELD MACHINERY & EQUIPMENT
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<PAGE>

As  filed with the Securities and Exchange Commission on  October 5, 1995
                                   Registration No. 33-__________
- -----------------------------------------------------------------------------

                      SECURITIES AND EXCHANGE COMMISSION

                            Washington, D.C. 20549
                                --------------
                                  FORM  S-8

                            REGISTRATION STATEMENT
                                  Under
                          THE SECURITIES ACT OF 1933

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

                          WEATHERFORD ENTERRA, INC.
              (Exact name of issuer as specified in its charter)

            Delaware                                         74-1681642
(State or other jurisdiction of                           (I.R.S. Employer
 incorporation or organization)                           Identification No.)

 1360 Post Oak Boulevard, Suite 1000,  Houston, Texas            77056-3098
(Address of Principal Executive Offices)                         (Zip Code)

               Weatherford Enterra, Inc. 1991 Stock Option Plan
           Weatherford Enterra, Inc. Restricted Stock Incentive Plan
                       D. Dale Wood Stock Option Agreement
Enterra Corporation Severance Agreements/Weatherford International Incorporated
                         Change of Control Agreements
- ------------------------------------------------------------------------------
                           (Full title of the plans)

                              H. SUZANNE THOMAS
            Sr. Vice President, Secretary and General Counsel
                          Weatherford Enterra, Inc.
                     1360 Post Oak Boulevard, Suite 1000
                          Houston, Texas  77056-3098
                   (Name and address of agent for service)

                                (713) 439-9400
        (Telephone number, including area code, of agent for service)

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

                                  Copies to:

                         FULBRIGHT & JAWORSKI L.L.P.
                          ATTN:  CHARLES L. STRAUSS
                          1301 MCKINNEY, SUITE 5100
                          HOUSTON, TEXAS 77010-3095


                         CALCULATION OF REGISTRATION FEE

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------------
                         AMOUNT     PROPOSED MAXIMUM   PROPOSED MAXIMUM     AMOUNT OF
  TITLE OF SECURITIES    TO BE       OFFERING PRICE   AGGREGATE OFFERING   REGISTRATION
   TO BE REGISTERED    REGISTERED      PER SHARE            PRICE              FEE
- --------------------------------------------------------------------------------------
<S>                    <C>              <C>               <C>              <C>
Common Stock,          1,959,500
$.10 par value         shares (1)       $12.94            $25,355,930(2)   $8,743.43(2)
- --------------------------------------------------------------------------------------
</TABLE>

     (1)   There are also registered hereby such indeterminate number of
shares of Common Stock as may become issuable by reason of  the anti-dilution
provisions of the Weatherford Enterra, Inc. 1991 Stock Option Plan;
Weatherford Enterra, Inc. Restricted Stock  Incentive Plan; D. Dale Wood
Stock Option Agreement; and Enterra Corporation Severance
Agreements/Weatherford International Incorporated Change of Control
Agreements.

     (2)  Pursuant to Rule 457(h), the maximum aggregate offering price  is
estimated, solely for the purpose of determining the registration fee, on
the basis of the average of the high and low prices of  the  Common Stock as
reported on the New  York  Stock Exchange on October 3, 1995.

==============================================================================

<PAGE>

                            PART II


       INFORMATION REQUIRED IN THE REGISTRATION STATEMENT


ITEM 3.   INCORPORATION OF DOCUMENTS BY REFERENCE.

         The  following  documents,  which  have  been  filed  by
Weatherford   Enterra,   Inc.,  a   Delaware   corporation   (the
"Company"),  with  the  Securities and Exchange  Commission  (the
"Commission"),   are   incorporated  by   reference   into   this
Registration Statement:

               1.   Annual Report on  Form  10-K  of  the
       Company  for  the year ended  December 31,   1994,
       filed by the Company under the Securities Exchange
       Act of 1934, as amended  (the "Exchange Act").

               2.   Quarterly Report on Form 10-Q of  the
       Company for the quarter ended March 31, 1995.

               3.   Quarterly  Report on Form 10-Q of the
       Company for the quarter ended  June 30, 1995.

               4.   Current  Report  on Form 8-K  of  the
       Company filed with the Commission on July 8, 1995.

        Any  document filed by the Company pursuant  to  Sections
13(a),  13(c), 14 or 15(d) of the Exchange Act after the date  of
this  Registration Statement and prior to the filing of  a  post-
effective  amendment hereto which indicates that  all  securities
offered  have been sold or which deregisters all such  securities
then  remaining unsold, shall be deemed to be incorporated herein
by  reference and to be a part hereof from the date of filing  of
such document.

ITEM 4.   DESCRIPTION OF SECURITIES.

      The  Company  is authorized by its Restated Certificate  of
Incorporation (the "Certificate") to issue 80,000,000  shares  of
Common  Stock,  $.10  par  value,  of  which  27,182,892   shares
were  legally issued and outstanding on September 30,  1995   and
1,000,000  shares of Serial Preferred Stock, $1.00 par value,  of
which  no  shares  were issued and outstanding on  September  30,
1995.   The  Company  held  32,104  shares  of  Common  Stock  in
its  treasury as of such date.  On October 5, 1995,  the  Company
issued  approximately  24,000,000  shares  of  Common  Stock   in
conjunction   with   the  merger  of  Enterra  Corporation   into
Weatherford International Incorporated, the  predecessor  of  the
Company.  Also  on  October 5, 1995,  the Company effected a one-
for-two  reverse stock split of shares of Common Stock.   All  of
the  share numbers stated in this paragraph reflect such  reverse
stock split.

      The Board of Directors of the Company is authorized by  the
Certificate to provide for the issuance of one or more series  of
Serial Preferred Stock.  The Board of Directors has the power  to
fix  various  terms  with respect to each such series,  including
voting   powers,   designations,  preferences,


                                II-1

<PAGE>

dividend  rates,  conversion  and exchange provisions, redemption
provisions and the amounts which holders are entitled to  receive
upon any liquidation, dissolution or winding up of the Company.

      All  outstanding shares of Common Stock are fully paid  and
nonassessable.  The holders of Common Stock are entitled  to  one
vote  for  each  share on all matters voted on  by  stockholders,
including  the  election of directors, and are not  permitted  to
cumulate their votes for the election of directors.  The  holders
of  Common  Stock have no preemptive rights to subscribe  for  or
purchase   any  additional  securities  issued  by  the  Company.
Subject  to the preferential rights of the holders of the  Serial
Preferred  Stock,  if any is outstanding, the holders  of  Common
Stock are entitled to receive any dividends which may be declared
by the Board of Directors out of funds legally available therefor
and  to  share  pro  rata in the net assets of the  Company  upon
liquidation.  However, dividends have not been paid on the Common
Stock  since  December 1982, and the Company does not  anticipate
paying  dividends  on  the  Common  Stock  at  any  time  in  the
foreseeable future.

      Certain  provisions of the Certificate and By-Laws  of  the
Company  could have the effect of preventing a change in  control
of the Company in certain situations.  These provisions generally
provide  for (a) the classification of the Board of Directors  of
the  Company into three classes having staggered terms  of  three
years each; (b) the removal of directors only for cause and  with
the  approval of holders of at least 80% of the then  outstanding
voting stock entitled to vote for the election of directors;  (c)
the  filling  of  any vacancy on the Board of  Directors  by  the
remaining  directors then in office; (d) the  limitation  of  the
number of directors to a minimum of six and a maximum of fifteen,
with the exact number to be determined by the Board of Directors;
(e) the elimination of the stockholder written consent procedure;
(f)  the calling of special meetings of stockholders only by  the
Board  of  Directors; (g) the requirement that  certain  business
combinations  involving the Company and any beneficial  owner  of
20%  or  more of the outstanding voting securities of the Company
be  approved  by holders of at least 80% of the then  outstanding
shares  of voting stock of the Company, including those  held  by
such  beneficial  owner,  unless  the  business  combination   is
approved  by the continuing directors then in office  or  certain
minimum  price  requirements  are  met;  and  (h)  the  increased
stockholder vote required to amend, repeal or adopt any provision
inconsistent with the foregoing provisions to 80% or more of  the
then outstanding shares of voting stock.

      The  transfer agent and registrar for the Common  Stock  is
American Stock Transfer and Trust Company.

ITEM 5.   INTERESTS OF NAMED EXPERTS AND COUNSEL.

       The legality of the issuance of the shares of Common Stock
offered hereby has been passed upon for the Company by H. Suzanne
Thomas, Sr. Vice President, Secretary and General Counsel of  the
Company.  Ms. Thomas is a participant in the Weatherford Enterra,
Inc.  1991  Stock Option Plan and the Weatherford  Enterra,  Inc.
Restricted   Stock   Incentive  Plan  and   has   a   Weatherford
International  Incorporated Change of Control Agreement.   As  of
the  date hereof, Ms. Thomas owned beneficially 37,221  shares of
Common Stock  and held  options to  purchase an additional 28,000
shares  of  Common  Stock  (such numbers reflect the  one-for-two
reverse  stock split effected by the Company on October 5, 1995).


                                II-2

<PAGE>

ITEM 6.   INDEMNIFICATION OF DIRECTORS AND OFFICERS.

        The Certificate contains a provision that eliminates  the
personal monetary liability of a director to the Company and  its
stockholders  for  breach of his fiduciary  duty  of  care  as  a
director  to  the  extent currently allowed  under  the  Delaware
General  Corporation Law ("DGCL").  If a director were to  breach
the  duty of care in performing his duties as a director, neither
the  Company nor its stockholders could recover monetary  damages
from the director, and the only course of action available to the
Company's  stockholders would be equitable remedies, such  as  an
action  to enjoin or rescind a transaction involving a breach  of
the fiduciary duty of care.  To the extent certain claims against
directors are limited to equitable remedies, the provision in the
Certificate  may  reduce the likelihood of derivative  litigation
and  may  discourage stockholders or management  from  initiating
litigation  against directors for breach of their duty  of  care.
Additionally,  equitable remedies may not be  effective  in  many
situations.   If  a stockholder's only remedy is  to  enjoin  the
completion  of the Board of Directors' action, this remedy  would
be  ineffective  if the stockholder does not become  aware  of  a
transaction or event until after it has been completed.  In  such
a situation, it is possible that the stockholders and the Company
would  have  no  effective  remedy against  the  directors.   The
directors do not have liability for monetary damages for  grossly
negligent  business  decisions (in violation  of  their  duty  of
care),  including decisions made in connection with  attempts  to
acquire the Company.  Liability for monetary damages remains  for
(i)  any  breach  of the duty of loyalty to the  Company  or  its
stockholders, (ii) acts or omissions not in good faith  or  which
involve  intentional misconduct or a knowing  violation  of  law,
(iii)  payment of an improper dividend or improper repurchase  of
the  Company's stock under Section 174 of the DGCL  or  (iv)  any
transaction from which the director derived an improper  personal
benefit.  The Certificate further provides that in the event  the
DGCL is amended to allow the further elimination or limitation of
the  liability of directors, then the liability of the  Company's
directors shall be limited to the fullest extent permitted by the
amended DGCL.

        The  DGCL  permits  a  corporation to  indemnify  certain
persons,  including officers and directors, who were or  are  (or
are threatened to be made) parties to any threatened, pending  or
completed  action, suit or proceeding, whether  civil,  criminal,
administrative or investigative (other than an action  by  or  in
right  of  the corporation) by reason of their being officers  or
directors of the corporation.  The indemnity may include expenses
(including attorneys' fees), judgments, fines and amounts paid in
settlement actually and reasonably incurred by him, provided  the
officer  or  director acted in good faith  and  in  a  manner  he
reasonably  believed to be in or not opposed to the corporation's
best interests and, in the case of criminal proceedings, provided
he  had  no  reasonable  cause to believe that  his  conduct  was
unlawful.  The By-Laws of the Company provide indemnification  to
the  fullest extent allowed pursuant to the foregoing  provisions
of the DGCL.

        The  DGCL  further  permits a  corporation  to  indemnify
certain  persons, including officers and directors, who  were  or
are  (or  are  threatened to be made) parties to any  threatened,
pending  or  completed action, suit or proceeding by  or  in  the
right  of  the corporation to procure a judgment in its favor  by
reason   of  their  status  officers  as  or  directors  of   the
corporation.   The  indemnity  may  include  expenses  (including
attorneys'  fees)  actually  and  reasonably  incurred  by   him,
provided  the officer or director acted in good faith  and  in  a
manner  he  reasonably believed to be in or not  opposed  to  the
corporation's  best interests.  However, no such person  will  be
indemnified as to matters for which he is found to be liable  for
negligence or misconduct in the performance of his duties to  the


                                II-3

<PAGE>

corporation  unless, and only to the extent that, indemnification
is  ordered  by  a  court.  The By-Laws of  the  Company  provide
indemnification  to the fullest extent allowed  pursuant  to  the
foregoing provisions of the DGCL.

        The  Company  also has entered, or will  enter,  into  an
indemnification agreement with each of its directors and  certain
of  its  officers.  Each such indemnification agreement  provides
for  indemnification to the fullest extent permitted by the  DGCL
and  for  the advancement of expenses, including attorneys'  fees
and  other  costs, expenses and obligations, paid or incurred  in
connection with investigating, defending, being a witness  in  or
participating in (including on appeal) any threatened, pending or
completed  action, suit or proceeding related to  the  fact  that
such  director was serving for or at the request of the  Company.
To  the extent that the Board of Directors or the stockholders of
the Company may in the future wish to limit or repeal the ability
of  the Company to indemnify or advance expenses to officers  and
directors, such repeal or limitation may not be effective  as  to
officers  and  directors who are parties  to  an  indemnification
agreement,   since   their   rights  to   full   protection   are
contractually assured by the indemnification agreement.

        Delaware  corporations  also  are  authorized  to  obtain
insurance   to  protect  officers  and  directors  from   certain
liabilities, including liabilities against which the  corporation
cannot   indemnify  its  directors  and  officers.   The  Company
currently  has  in  effect a directors' and  officers'  liability
insurance  policy providing aggregate coverage in the  amount  of
$10,000,000.

        All  of  the foregoing indemnification provisions provide
that  such provisions are not to be deemed exclusive of any other
right to indemnity to which a director or officer may be entitled
under   any   by-law,   agreement,  vote   of   stockholders   or
disinterested directors or otherwise.

        Insofar as indemnification for liabilities arising  under
the  Securities  Act of 1933, as amended (the "Securities  Act"),
may  be  permitted to directors, officers or persons  controlling
the  Company pursuant to the foregoing provisions, or  otherwise,
the  Company  has  been  informed that  in  the  opinion  of  the
Commission  such  indemnification is  against  public  policy  as
expressed   in   the   Securities    Act   and   is,   therefore,
unenforceable.

ITEM 7.   EXEMPTION FROM REGISTRATION CLAIMED.

          Not applicable.


ITEM 8.   EXHIBITS.

          The following is a list of all Exhibits filed with this
Registration Statement:

EXHIBIT NO.

     *4.1-- Restated Certificate of Incorporation of the Company,
            as amended through October 5, 1995.


                                II-4

<PAGE>

      4.2-- By-Laws of the Company, as amended through  March 17,
            1994 (incorporated by reference to Exhibit 3.1 to the
            Company's Current Report on Form 8-K dated April  28,
            1994 (File No. 1-7867)).

     *4.3-- Weatherford Enterra, Inc. 1991 Stock Option  Plan, as
            amended through October 5, 1995.

     *4.4-- Weatherford Enterra, Inc.  Restricted Stock Incentive
            Plan, as amended through October 5, 1995.

     *4.5-- D. Dale Wood Stock Option Agreement dated October  5,
            1995 between D. Dale Wood and the Company.

     *4.6-- Enterra  Corporation  Severance  Agreement   with  M.
            Timothy  Carey,  C. Paul  Evans,  Brian Charles Goff,
            Steven C. Grant, Edward C. Grimes, Steven W. Krablin,
            Windell D. Norris,  Jr.,  J. Joseph  Percle,  Michael
            Peter Smith, Michael L. Stansberry and D. Dale Wood.

     *4.7-- Amendment  1995-1  to  Severance  Agreement  with  M.
            Timothy Carey,  C. Paul  Evans,  Brian  Charles Goff,
            Steven C. Grant, Edward C. Grimes, Steven W. Krablin,
            Windell D. Norris,  Jr.,  J.  Joseph  Percle, Michael
            Peter Smith, Michael L. Stansberry and D. Dale Wood.

      4.8-- Weatherford  International  Incorporated  Change   of
            Control Agreements with Philip Burguieres,  James  R.
            Burke, M.E. Eagles, Norman W. Nolen  and  H.  Suzanne
            Thomas (incorporated by reference to Exhibit 10.5  to
            the Company's Annual Report on Form 10-K for the year
            ended December 31, 1993 (File No. 1-7867));  James D.
            Green,  Gay  S.  Mayeux,  Jon Nicholson and Weldon W.
            Walker (incorporated by reference to Exhibit 10.4  to
            the Company's Annual Report on Form 10-K for the year
            ended  December  31,  1994  (File  No.  1-7867)); and
            Philip D. Gardner, Robert  A. Seekely and  F.  Thomas
            Tilton (incorporated  by reference  to  Exhibit  10.1
            to the Company's  Quarterly Report Form 10-Q for  the
            quarter ended March 31, 1995 (File No. 1-7867)).

      4.9-- First Amendment to Change of  Control  Agreement with
            Philip  Burguieres,  James  R.  Burke,  M.E.  Eagles,
            Norman W. Nolen, H. Suzanne Thomas, James  D.  Green,
            Gay S. Mayeux,  Jon Nicholson and  Weldon  W.  Walker
            (incorporated by reference to  Exhibit  10.2  to  the
            Company's Quarterly Report  Form on Form 10-Q for the
            quarter ended  March 31, 1995 (File No. 1-7867)); and
            Philip D. Gardner,  Robert  A. Seekely and  Frederick
            T.  Tilton  (incorporated  by  reference  to  Exhibit
            10.2 to the Company's Registration Statement  on Form
            S-4 (Registration No. 33-62195)).

     4.10-- Second Amendment to Change of Control Agreement  with
            Philip  Burguieres,  James  R.  Burke,  M.E.  Eagles,
            Norman W. Nolen,  H. Suzanne Thomas,  James D. Green,
            Gay  S.  Mayeux,  Jon  Nicholson and Weldon W. Walker
            (incorporated    by  reference to Exhibit 10.1 to the
            Company's   Registration   Statement   on   Form  S-4
            (Registration No. 33-62195)).

     *5.1-- Opinion of H. Suzanne Thomas, General Counsel of  the
            Company.


                                II-5

<PAGE>

    *23.1-- Consent of Arthur Andersen  LLP.

    *23.2-- Consent of H. Suzanne Thomas, General Counsel of  the
            Company (contained in Exhibit 5.1 hereto).

    *24.1--Power of Attorney (contained on page II-9 hereof).

__________
* Filed herewith.

                                II-6

<PAGE>

ITEM 9. UNDERTAKINGS.

       The undersigned hereby undertakes:

        (1)      To  file, during any period in which  offers  or
sales  are  being  made,  a  post-effective  amendment  to   this
Registration Statement:

           (i)   To  include any prospectus required  by  Section
     10(a)(3) of the Securities Act;

           (ii)  To reflect in the prospectus any facts or events
     arising  after  the  effective  date  of  this  Registration
     Statement  (or  the  most  recent  post-effective  amendment
     hereof) which, individually or in the aggregate, represent a
     fundamental  change in the information  set  forth  in  this
     Registration Statement; and

            (iii) To   include   any  material  information  with
     respect to the plan of distribution not previously disclosed
     in this  Registration  Statement  or any material  change to
     such information in  this Registration Statement;

PROVIDED, HOWEVER, that paragraphs (i) and (ii) do not  apply  if
the  information  required  to be included  in  a  post-effective
amendment  by  those paragraphs is contained in periodic  reports
filed  by the Company pursuant to Section 13 or Section 15(d)  of
the  Exchange  Act,  that are incorporated by reference  in  this
Registration Statement.

      (2)   That,  for the purpose of determining  any  liability
under  the  Securities  Act, each such  post-effective  amendment
shall  be  deemed to be a new registration statement relating  to
the   securities  offered  herein,  and  the  offering  of   such
securities  at that time shall be deemed to be the  initial  bona
fide offering thereof.

      (3)   To  remove  from registration by  means  of  a  post-
effective amendment any of the securities being registered  which
remain unsold at the termination of the offering.

        The  undersigned registrant hereby undertakes  that,  for
purposes  of determining any liability under the Securities  Act,
each filing of the registrant's annual report pursuant to section
13(a)   or  section  15(d)  of  the  Exchange  Act,  and,   where
applicable,  each  filing of an employee  benefit  plan's  annual
report  pursuant to section 15(d) of the Exchange  Act,  that  is
incorporated by reference in the registration statement shall  be
deemed  to  be  a  new  registration statement  relating  to  the
securities  offered therein, and the offering of such  securities
at that time shall be deemed to be the initial bona fide offering
thereof.

        Insofar as indemnification for liabilities arising  under
the  Securities Act may be permitted to directors,  officers  and
controlling  persons of the registrant pursuant to the  foregoing
provisions, or otherwise, the registrant has been advised that in
the  opinion  of the Commission such indemnification  is  against
public  policy  as  expressed  in  the  Securities  Act  and  is,
therefore,  unenforceable.   In  the  event  that  a  claim   for
indemnification against such liabilities (other than the  payment
by  the  registrant of expenses incurred or paid by  a  director,
officer or controlling person of the registrant in the successful
defense  of any action, suit or proceeding) is asserted  by  such
director,


                                II-7

<PAGE>

officer or controlling person in connection  with  the securities
being registered, the registrant will, unless  in  the opinion of
its counsel the matter has been settled by controlling precedent,
submit  to  a court  of  appropriate  jurisdiction  the  question
whether  such indemnification by it is  against  public policy as
expressed in the Securities Act and will be governed by the final
adjudication of such issue.


                                II-8


<PAGE>

                           SIGNATURES

        Pursuant  to  the requirements of the Securities  Act  of
1933, as amended, Weatherford Enterra, Inc. certifies that it has
reasonable  grounds  to  believe  that  it  meets  all   of   the
requirements  for  filing on Form S-8 and has  duly  caused  this
Registration  Statement  to  be  signed  on  its  behalf  by  the
undersigned, thereunto duly authorized, in the City  of  Houston,
State of Texas, on October 5, 1995.

                                 WEATHERFORD ENTERRA, INC.



                                 By:  /s/ Philip Burguieres
                                    -----------------------------
                                      Philip Burguieres
                                 Chairman, President and Chief
                                      Executive Officer

      Pursuant to the requirements of the Securities Act of 1933,
as  amended, this Registration Statement has been signed  by  the
following persons in the capacities and on the dates indicated.

                       POWER OF ATTORNEY

      Each  person whose signature appears below appoints  Philip
Burguieres  and  H. Suzanne Thomas, and both of them,  either  of
whom  may  act without the joinder of the other, as his true  and
lawful   attorney-in-fact  and  agent,   with   full   power   of
substitution and resubstitution, for him, and in his name,  place
and  stead,  in  any  and all capacities  to  sign  any  and  all
amendments   (including   post-effective   amendments   to   this
Registration Statement), and to file the same, with all  exhibits
thereto and all other documents in connection therewith, with the
Securities and Exchange Commission, granting unto said  attorney-
in-fact and agent full power and authority to do and perform each
and  every act and thing requisite and necessary to be  done,  as
fully  to  all intents and purposes as he might or  could  do  in
person, hereby ratifying and confirming all that said attorney-in-
fact and agent or their substitute or substitutes may lawfully do
or cause to be done by virtue hereof.

       SIGNATURE                  TITLE                DATE
       ---------                  -----                ----

                          Chairman, President,
  /s/ Philip Burguieres      Chief Executive      October 5, 1995
- ------------------------  Officer and Director
  (Philip Burguieres)     (Principal Executive
                                Officer)

                           Senior Vice President,
                              Chief Financial
  /s/ Norman W. Nolen      Officer and Treasurer   October 5, 1995
- ------------------------ (Principal Financial and
   (Norman W. Nolen)       Accounting Officer)


                                  II-9

<PAGE>

       SIGNATURE                  TITLE                DATE
       ---------                  -----                ----

  /s/ Thomas N. Amonett          Director         October 5, 1995
- ------------------------
  (Thomas N. Amonett)


                                 Director
- ------------------------
 (William E. Greehey)


  /s/ John A. Hill               Director         October 5, 1995
- ------------------------
    (John A. Hill)


 /s/ John W. Johnson             Director         October 5, 1995
- ------------------------
   (John W. Johnson)


 /s/ William E. Macaulay         Director         October 5, 1995
- ------------------------
 (William E. Macaulay)


 /s/ Robert K. Moses, Jr.        Director         October 5, 1995
- ------------------------
 (Robert K. Moses, Jr.)


/s/ Robert L. Parker, Sr.        Director         October 5, 1995
- ------------------------
(Robert L. Parker, Sr.)


/s/ R. Rudolph Reinfrank         Director         October 5, 1995
- ------------------------
(R. Rudolph Reinfrank)


 /s/ Roger M. Widmann            Director         October 5, 1995
- ------------------------
  (Roger M. Widmann)


                                II-10

<PAGE>

                       INDEX TO EXHIBITS

EXHIBIT
  NO.                       DESCRIPTION
- -------  --------------------------------------------------------

 *4.1 -- Restated  Certificate  of Incorporation of the Company,
         as amended through October 5, 1995.

  4.2 -- By-Laws of the Company, as  amended  through  March 17,
         1994  (incorporated  by  reference to  Exhibit  3.1  to
         the Company's  Current Report on Form 8-K  dated  April
         28, 1994 (File No. 1-7867)).

 *4.3 -- Weatherford Enterra, Inc. 1991 Stock  Option  Plan,  as
         amended through October 5, 1995.

 *4.4 -- Weatherford  Enterra, Inc.  Restricted  Stock Incentive
         Plan, as amended through October 5, 1995.

 *4.5 -- D. Dale Wood Stock Option  Agreement  dated  October 5,
         1995 between D. Dale Wood and the Company.

 *4.6 -- Enterra Corporation Severance Agreement with M. Timothy
         Carey,  C. Paul Evans,  Brian Charles  Goff,  Steven C.
         Grant, Edward C. Grimes,  Steven W. Krablin, Windell D.
         Norris,  Jr.,  J. Joseph Percle,  Michael Peter  Smith,
         Michael L. Stansberry and D. Dale Wood.

 *4.7 -- Amendment 1995-1 to Severance Agreement with M. Timothy
         Carey,  C. Paul Evans,  Brian  Charles Goff,  Steven C.
         Grant, Edward C. Grimes, Steven W.  Krablin, Windell D.
         Norris,  Jr.,  J.  Joseph Percle,  Michael Peter Smith,
         Michael L. Stansberry and D. Dale Wood.

  4.8 -- Weatherford   International   Incorporated   Change  of
         Control  Agreement  with  Philip  Burguieres,  James R.
         Burke,  M.E.  Eagles,  Norman W. Nolen  and  H. Suzanne
         Thomas  (incorporated by  reference  to Exhibit 10.5 to
         the  Company's Annual  Report on Form 10-K for the year
         ended December 31,  1993  (File No. 1-7867));  James D.
         Green,  Gay S. Mayeux,  Jon  Nicholson  and  Weldon  W.
         Walker  (incorporated by reference to  Exhibit  10.4 to
         the Company's  Annual  Report on Form 10-K for the year
         ended December 31, 1994  (File No. 1-7867)); and Philip
         D.  Gardner,  Robert A. Seekely  and F.  Thomas  Tilton
         (incorporated  by  reference  to  Exhibit  10.1  to the
         Company's Quarterly Report on Form 10-Q for the quarter
         ended March 31, 1995 (File No. 1-7867)).

  4.9 -- First Amendment  to  Change  of  Control Agreement with
         Philip Burguieres,  James R. Burke, M.E. Eagles, Norman
         W. Nolen,  H. Suzanne Thomas,  James D. Green,   Gay S.
         Mayeux,    Jon   Nicholson   and   Weldon   W.   Walker
         (incorporated by  reference  to  Exhibit  10.2  to  the
         Company's Quarterly Report on Form 10-Q for the quarter
         ended  March 31, 1995 (File No. 1-7867)); and Philip D.
         Gardner,  Robert  A. Seekely  and  Frederick T.  Tilton
         (incorporated  by  reference  to  Exhibit  10.2  to the
         Company's    Registration   Statement   on   Form   S-4
         (Registration No. 33-62195)).


<PAGE>

  4.10-- Second   Amendment  to  Change  of  Control   Agreement
         with  Philip  Burguieres, James R. Burke, M.E.  Eagles,
         Norman W. Nolen, H. Suzanne Thomas, James D. Green, Gay
         S.  Mayeux,   Jon  Nicholson  and  Weldon   W.   Walker
         (incorporated  by  reference to  Exhibit  10.1  to  the
         Company's   Registration   Statement   on   Form    S-4
         (Registration No. 33-62195)).

 *5.1 -- Opinion  of H. Suzanne Thomas,  General Counsel of  the
         Company.

*23.1 -- Consent of Arthur Andersen, LLP.

*23.2 -- Consent of  H. Suzanne Thomas,  General Counsel  of the
         Company (contained  in  Exhibit  5.1 hereto).

*24.1 -- Power of Attorney (contained on page II-9).



<PAGE>

              RESTATED CERTIFICATE OF INCORPORATION

                               OF

                    WEATHERFORD ENTERRA, INC.
         (Originally incorporated on December 14, 1970
             under the name Dixel Industries, Inc.)


     FIRST:  The name of the Corporation is Weatherford Enterra, Inc.

     SECOND: The registered office of the Corporation in the State of
Delaware is located at 32 Loockerman Square, Suite L-100 in the City of
Dover, County of Kent. The name and address of its registered agent is The
Prentice-Hall Corporation System, Inc., 32 Loockerman Square, Suite L-100,
Dover, Delaware.

     THIRD: The nature of the business, objects and purposes to be
transacted, promoted or carried on by the Corporation are:

     To manufacture, purchase or otherwise acquire, invest in, own, mortgage,
pledge, sell, assign and transfer or otherwise dispose of, trade, deal in and
with goods, wares and merchandise and personal property of every class and
description;

     To acquire, and pay for in cash, stock or bonds of this Corporation or
otherwise, the goodwill, rights, assets and property, and to undertake or
assume the whole or any part of the obligations or liabilities of any person,
partnership, trust, joint stock company, syndicate, firm, association or
corporation;

     To acquire, hold, use, sell, assign, lease, grant licenses in respect
of, mortgage or otherwise dispose of letters patent of the United States or
any foreign country, patent rights, licenses and privileges, inventions,
improvements and processes, copyrights, trademarks and trade names, relating
to or useful in connection with any business of this Corporation;

     To acquire by purchase, subscription or otherwise, and to receive, hold,
own, sell, assign, exchange, transfer, mortgage, pledge or otherwise dispose
of or deal in and with any of the shares of the capital stock, or any voting
trust certificates in respect of the shares of capital stock, scrip,
warrants, rights, bonds, debentures, notes, trust receipts and other
securities, obligations, chosen in action and evidences of indebtedness or
interest issued or created by any corporations, joint stock companies,
syndicates, associations, firms, trusts or persons, public or private, or by
the government of the United States of America, or by any foreign government,
or by any state, territory, province, municipality or other political
subdivision or by any governmental agency, and as owner thereof to possess
and exercise all the rights, powers and privileges of ownership, including
the right to execute consents and vote thereon, and to do any and all acts
and things necessary or advisable for the preservation, protection,
improvement and enhancement in value thereof;


<PAGE>

     To borrow or raise moneys for any of the purposes of the Corporation
and, from time to time without limit as to amount, to draw, make, accept,
endorse, execute and issue promissory notes, drafts, bills of exchange,
warrants, bonds, debentures and other negotiable or non-negotiable
instruments and evidences of indebtedness, and to secure the payment of any
thereof and of the interest thereon by mortgage upon or pledge, conveyance or
assignment in trust of the whole or any part of the property of the
Corporation, whether at the time owned or thereafter acquired, and to sell,
pledge or otherwise dispose of such bonds or other obligations of the
Corporation for its corporate purposes;

     To purchase, receive, take by grant, gift, devise, bequest or otherwise,
lease, or otherwise acquire, own, hold, improve, employ, use and otherwise
deal in and with, real or personal property, or any interest therein,
wherever situated, and to sell, convey, lease, exchange, transfer or
otherwise dispose of, or mortgage or pledge, all or any of the Corporation's
property and assets, or any interest therein, wherever situated; and

     To engage in any lawful act or activity for which corporations may be
organized under the General Corporation Law of Delaware.

     The business and purposes specified in the foregoing clauses shall,
except where otherwise expressed, be in nowise limited  or restricted by
reference to, or inference from, the terms  of  any other  clause in this
Restated Certificate of Incorporation,  but the  business  and  purposes
specified in each of  the  foregoing clauses of this article shall be
regarded as independent business and purposes.

     FOURTH: The total number of shares of stock of all classes which the
Corporation shall have authority to issue is 81,000,000, of which
1,000,000 shares of the par value of $1 each shall be designated Serial
Preferred Stock (the "Serial Preferred Stock"), and of which 80,000,000
shares of the par value of $.10 each shall be designated Common Stock (the
"Common Stock"). A statement of all powers, preferences and rights,
and the qualifications, limitations or restrictions thereof, in respect
of the Serial Preferred Stock and the Common Stock is as follows:

A.   REVERSE STOCK SPLIT

      Effective as of 12:15 p.m. on October 5, 1995 (the "Effective
Time"), each two shares of Common Stock issued and outstanding immediately
prior to the Effective Time shall automatically be changed and converted,
without any action on the part of the holder thereof, into one share of
Common Stock and, in lieu of interests in a fraction of a share of Common
Stock, each holder whose aggregate holdings of Common Stock prior to the
Effective Time amounted to a number of shares not evenly divisible by two
shall be entitled to receive for such interest in a fraction of a share of
Common Stock, and at the Effective Time such interest in a fraction of a
share of Common Stock shall be converted into the right to receive, upon the
surrender of the stock certificates formerly representing shares of Common
Stock, an amount in cash equal to $12.88 for such interest in a fraction of a
share of Common Stock.

                                       -2-

<PAGE>

B.   SERIAL PREFERRED STOCK

     (1)  Shares of Serial Preferred Stock may be issued from time to time
          in one or more series, each such series to have distinctive
          serial designations, as shall hereafter be determined in the
          resolution or resolutions providing for the issue of such
          Preferred Stock from time to time adopted by the Board of
          Directors pursuant to authority so to do, which is hereby vested
          in the Board of Directors.

    (2)   Each series of Preferred Stock

          (a)  may have such number of shares;

          (b)  may have such voting powers, full or limited, or may be
               without voting powers;

          (c)  may be subject to redemption at such time and at such
               prices;

          (d)  may be entitled to receive dividends (which may be
               cumulative or noncumulative), at such rate or rates, on
               such conditions, from such date or dates, and at such
               times, and payable in preference to, or in such relation
               to, the dividends payable on any other class or classes or
               series of stock;

          (e)  may have such rights upon the dissolution of, or upon any
               distribution of the assets of, the Corporation;

          (f)  may be made convertible into, or exchangeable for, shares
               of any other class or classes or of any other series of the
               same or any other class or classes of stock of the
               Corporation at such price or prices or at such rates of
               exchange, and with such adjustments;

          (g)  may be entitled to the benefit of a sinking fund or purchase
               fund to be applied to the purchase or redemption of shares
               of such series in such amount or amounts;

          (h)  may be entitled to the benefit of conditions and
               restrictions upon the creation of indebtedness of the
               Corporation or any subsidiary, upon the issue of any
               additional stock (including additional shares of such
               series or of any other series) and upon the payment of
               dividends or the making of other distributions on and the
               purchase, redemption or other acquisition by the Corporation
               or any subsidiary of any outstanding stock of the
               Corporation; and

          (i)  may have such other relative, participating, optional or
               other special rights, and qualifications, limitations or
               restrictions thereof;

                                       -3-

<PAGE>

               as shall be stated in said resolution or resolutions
               providing for the issue of such Serial Preferred Stock.
               Except where otherwise set forth in the resolution or
               resolutions adopted by the Board of Directors providing
               for the issue of any series of Serial Preferred Stock, the
               number of shares comprising such series may be increased
               or decreased (but not  below the number of shares then
               outstanding) from time to time by like action of the Board
               of Directors.

     (3)  Shares of any series of Serial Preferred Stock  which have
          been redeemed (whether through the operation of a sinking fund
          or otherwise) or purchased by the  Corporation, or which, if
          convertible or exchangeable, have been converted into or
          exchanged for shares of stock of any other class or classes
          shall have the status of authorized and unissued shares of
          Serial Preferred Stock and may be reissued as a part of the
          series of which they were originally a part or may be
          reclassified and reissued as part of a new series of Preferred
          Stock to be created by resolution or resolutions of the Board
          of Directors or as part of any other series of Serial Preferred
          Stock, all subject to the conditions or restrictions on issuance
          set forth in the resolution or resolutions adopted by the Board
          of Directors providing for the issue of any series of Serial
          Preferred Stock and to any filing required by law.

C.   COMMON STOCK

     (1)  Except as otherwise provided by law or by the resolution or
          resolutions of the Board of Directors providing for the issue
          of any series of the Serial Preferred Stock, the Common Stock
          shall have the exclusive right to vote for the election of
          directors and for all other purposes, each holder of the Common
          Stock being entitled to one vote for each share held.

     (2)  Subject to all of the rights of the Serial Preferred Stock or
          any series thereof, the holders of the Common Stock shall be
          entitled to receive, when, as and if declared by the Board of
          Directors, out of funds legally available therefor, dividends
          payable in cash, stock or otherwise.

     (3)  Upon any liquidation, dissolution or winding up of the
          Corporation, whether voluntary or involuntary, and after the
          holders of the Serial Preferred Stock of each series shall have
          been paid in full the amounts to which they respectively shall
          be entitled, or a sum sufficient for such payments in full shall
          have been set aside, the remaining net assets of the Corporation
          shall be distributed pro rata to the holders of the  Common
          Stock in accordance with their respective rights and interests,
          to the exclusion of the holders of the Serial Preferred Stock.

D. GENERAL PROVISIONS

     (1)  Any action required or permitted to be taken by the stockholders
          of the Corporation must be effected at a duly called annual or
          special meeting

                                       -4-


<PAGE>

          of stockholders of the Corporation and may not be effected by
          any consent in writing by such stockholders. Special meetings
          of stockholders of the Corporation may be called only by the
          Board of Directors pursuant to a resolution approved by a
          majority of the entire Board of Directors, upon not less than
          thirty nor more than sixty days written notice. Notwithstanding
          anything contained in this Restated Certificate of Incorporation
          to the contrary, the affirmative vote of the holders of at least
          80% of the voting power of all of the shares of the Corporation
          entitled to vote for the election of directors shall be required
          to amend or repeal, or to adopt any provision inconsistent with,
          this paragraph (1), Section D of Article FOURTH.

     (2)  No stockholder shall be entitled as a matter of right to
          subscribe for or receive additional shares of any class of stock
          of the Corporation, whether now or hereafter authorized, or any
          bonds, debentures or other securities convertible into stock, but
          such additional shares of stock or other securities convertible
          into stock may be issued or disposed of by the Board of
          Directors to such persons on such terms as, in its discretion,
          it shall deem advisable.

     FIFTH: The Corporation is to have perpetual existence.

     SIXTH: In furtherance and not in limitation of the powers conferred by
statute, the Board of Directors is expressly authorized:

     (1)  To make, alter or repeal the by-laws of the Corporation, in the
          manner and subject to any limitations contained in such by-laws,
          to the extent such action is not inconsistent with the provisions
          of this Restated Certificate of Incorporation.

     (2)  To authorize and cause to be executed mortgages and liens upon
          the real and personal property of the Corporation.

     (3)  To set apart out of any of the funds of the Corporation available
          for dividends a reserve or reserves for any proper purpose and to
          abolish any such reserve in the manner in which it was created.

     (4)  By a majority of the whole Board of Directors, to designate one
          or more committees, each committee to consist of two or more of
          the directors of the Corporation. The Board of Directors may
          designate one or more directors as alternate members of any
          committee, who may replace any absent or disqualified member at
          any meeting of the committee. Any such committee, to the extent
          provided in the resolution or in the by-laws of the Corporation,
          shall have and may exercise the powers of the Board of Directors
          in the management of the business and affairs of the Corporation
          and may authorize the seal of the Corporation to be affixed to
          all papers which may require it; provided, however, the by-laws
          may provide that in the absence or disqualification of any member
          of such

                                       -5-

<PAGE>

          committee or committees the member or members thereof present at
          any meeting and not disqualified from voting, whether or not he
          or they constitute a quorum, may unanimously appoint another
          member of the Board of Directors to act at the meeting in the
          place of any such absent or disqualified member.

     (5)  When and as authorized by the affirmative vote of the holders of
          a majority of the stock issued and outstanding having voting
          power given at a stockholders meeting duly called upon such
          notice as is required by statute, this Restated Certificate of
          Incorporation or the by-laws of the Corporation, to sell, lease
          or exchange all or substantially all the property and assets of
          the Corporation, including its goodwill and its corporate
          franchises, upon such terms and conditions and for such
          consideration, which may consist in whole or in part of money or
          property, including securities of any other corporation or
          corporations, as the Board of Directors shall deem expedient and
          for the best interests of the Corporation; provided, however,
          that to the extent any such sale, lease or exchange would
          constitute a "Business Combination" as defined in Article
          ELEVENTH of this Restated Certificate of Incorporation, the
          provisions of such Article ELEVENTH shall control and no such
          sale, lease or exchange shall be made except upon compliance with
          and pursuant to the applicable terms and provisions of such
          Article ELEVENTH.

     SEVENTH: Whenever a compromise or arrangement is proposed between this
Corporation and its creditors or any class of them and/or between this
Corporation and its stockholders or any class of them, any court of equitable
jurisdiction within the State of Delaware may, on the application in a
summary way of this Corporation or of any creditor or stockholder thereof or
on the application of any receiver or receivers appointed for this
Corporation under the provisions of section 291 of Title 8 of the Delaware
Code or on the application of trustees in dissolution or of any receiver or
receivers appointed for this Corporation under the provisions of section 279
of Title 8 of the Delaware Code, order a meeting of the creditors or class of
creditors, and/or of the stockholders or class of stockholders of this
Corporation, as the case may be, to be summoned in such manner as the said
court directs. If a majority in number representing three-fourths in value of
the creditors or class of creditors, and/or of the stockholders or class of
stockholders of this Corporation, as the case may be, agree to any compromise
or arrangement and to any reorganization of this Corporation as consequence
of such compromise or arrangement, the said compromise or arrangement and the
said reorganization shall, if sanctioned by the court to which the said
application has been made, be binding on all the creditors or class of
creditors, and/or on all the stockholders or class of stockholders, of this
Corporation, as the case may be, and also on this Corporation.

     EIGHTH: Meetings of stockholders may be held within or without the State
of Delaware, as the by-laws may provide. The books of the Corporation may be
kept (subject to any provision contained in the statutes) outside the State
of Delaware at such place or places as may be designated from time to time by
the Board of Directors

                                       -6-

<PAGE>

or in the by-laws of the Corporation. Elections of directors need not be by
written ballot unless the by-laws of the Corporation shall so provide.

     NINTH:  The Corporation reserves the right to amend, alter, change or
repeal any provision contained in this Restated Certificate of Incorporation,
in the manner now or hereafter prescribed by statute, and all rights
conferred upon stockholders herein are granted subject to this reservation;
provided, however, that to the extent that any provision of this Restated
Certificate of Incorporation requires for approval of any such amendment,
alteration, change or repeal the approving vote of a greater percentage of
the capital stock of the Corporation having voting power with respect to such
action than the percentage required by statute, then such provision shall be
controlling and no such action shall be taken except upon a vote meeting the
greater percentage requirements of such provision.

     TENTH:  Board of Directors.

A.   NUMBER, ELECTION AND TERMS. The business and affairs of the Corporation
     shall be managed by a Board of Directors consisting of not less than six
     nor more than fifteen persons. The exact number of directors within the
     minimum and maximum limitations specified in the preceding sentence shall
     be fixed from time to time by the Board of Directors pursuant to a
     resolution adopted by a majority of the entire Board of Directors. At the
     1983 annual meeting of stockholders, the directors shall be divided into
     three classes, as nearly equal in number as possible, with the term of
     office of the first class to expire at the 1984 annual meeting of
     stockholders, the term of office of the second class to expire at the
     1985 annual meeting of stockholders and the term of office of the third
     class to expire at the 1986 annual meeting of stockholders. At each annual
     meeting of stockholders following such initial classification and election,
     directors elected to succeed those directors whose terms expire shall be
     elected for a term of office to expire at the third succeeding annual
     meeting of stockholders after their election.

B.   NEWLY CREATED DIRECTORSHIPS AND VACANCIES. Subject to the rights of the
     holders of any series of Serial Preferred Stock then outstanding, newly
     created directorships resulting from any increase in the authorized number
     of directors or any vacancies in the Board of Directors resulting from
     death, resignation, retirement, disqualification, removal from office or
     other cause shall be filled by a majority vote of the directors then in
     office, and directors so chosen shall hold office for a term expiring at
     the annual meeting of stockholders at which the term of the class to which
     they have been elected expires. No decrease in the number of directors
     constituting the Board of Directors shall shorten the term of any incumbent
     director.

C.   REMOVAL. Subject to the rights of the holders of any series of Serial
     Preferred Stock then outstanding, any director or the entire Board of
     Directors, may be removed from office at any time, but only for cause
     and only by the affirmative vote of the holders of at least 80% of the
     voting power of all of the shares of the Corporation entitled to vote for
     the election of directors.

                                       -7-

<PAGE>

D.   AMENDMENT, REPEAL, ETC. Notwithstanding anything contained in this Restated
     Certificate of Incorporation to the
     contrary, the affirmative vote of the holders of at least
     80% of the voting power of all the shares of the Corporation
     entitled to vote for the election of directors shall be
     required to amend or repeal, or to adopt any provision
     inconsistent with, this Article TENTH.

E.   LIMITATION  OF  LIABILITY. A director of the Corporation shall not be
     personally liable to the Corporation or its stockholders for monetary
     damages for breach of fiduciary duty as a director, except for liability
     (i) for any breach of the director's duty of loyalty to the Corporation or
     its stockholders, (ii) for acts or omissions not in good faith or which
     involve intentional misconduct or a knowing violation of law, (iii) under
     Section 174 of the Delaware General Corporation Law, as the same exists or
     hereafter may be amended, or (iv) for any transaction from which the
     director derived an improper personal benefit. This section shall not
     eliminate or limit the liability of a director for any act or omission
     occurring prior to the effective date of the amendment adding this section
     to the Company's Restated Certificate of Incorporation. Any repeal or
     modification of this section by the stockholders of the Company shall be
     prospective only, and shall not adversely affect any limitation on the
     personal liability of a director of the Corporation existing at the time
     of such repeal or modification. If the Delaware General Corporation Law
     hereafter is amended to authorize the further elimination or limitation
     of the personal liability of directors, then the liability of each
     director of the Corporation, in addition to the limitation on personal
     liability provided herein, shall be limited to the fullest extent permitted
     by the amended Delaware General Corporation Law.

     ELEVENTH:  Vote Required for Certain Business Combinations.

A.   HIGHER VOTE REQUIRED FOR APPROVAL OF CERTAIN BUSINESS COMBINATIONS.

     (1)  HIGHER VOTE FOR CERTAIN BUSINESS COMBINATIONS. In addition to any
          affirmative vote required by law or this Restated Certificate of
          Incorporation, and except as otherwise expressly provided in
          paragraph B of this Article ELEVENTH:

          (a)  any merger or consolidation of the Corporation or any Subsidiary
               (as hereinafter defined) with (i) any Interested Stockholder (as
               hereinafter defined) or (ii) any other corporation (whether or
               not itself an Interested Stockholder) which is, or after such
               merger or consolidation would be, an Affiliate (as hereinafter
               defined) of an Interested Stockholder; or

          (b)  any sale, lease, exchange, mortgage, pledge, transfer or other
               disposition (in one transaction or a series of transactions) to
               or with any Interested Stockholder or any Affiliate of any
               Interested Stockholder of any assets of the Corporation or any
               Subsidiary having an aggregate Fair Market Value (as hereinafter
               defined) of $1,000,000 or more; or

                                       -8-

<PAGE>

          (c)  the issuance or transfer by the Corporation or any Subsidiary (in
               one transaction or a series of transactions) of any securities of
               the Corporation or any Subsidiary to any Interested Stockholder
               or any Affiliate of any Interested Stockholder in exchange for
               cash, securities or other property (or a combination thereof)
               having an aggregate Fair Market Value of $1,000,000 or more; or

          (d)  the adoption of any plan or proposal for the liquidation or
               dissolution of the Corporation proposed by or on behalf of an
               Interested Stockholder or any Affiliate of any Interested
               Stockholder; or

          (e)  any reclassification of securities (including any reverse stock
               split), or recapitalization of the Corporation, or any merger or
               consolidation of the Corporation with any of its Subsidiaries or
               any other transaction (whether or not with or into or otherwise
               involving an Interested Stockholder) which has the effect,
               directly or indirectly, of increasing the proportionate share of
               the outstanding shares of any class of equity or convertible
               securities of the Corporation or any Subsidiary which is directly
               or indirectly owned by any Interested Stockholder or any
               Affiliate of any Interested Stockholder;

          shall require the affirmative vote of the holders of at least 80% of
          the voting power of the then outstanding shares of capital stock of
          the Corporation entitled to vote generally in the election of
          directors (the "Voting Stock"), voting together as a single class (it
          being understood that for purposes of this Article ELEVENTH, each
          share of the Voting Stock shall have the number of votes granted to
          it pursuant to Article FOURTH of this Restated Certificate of
          Incorporation, including any resolution of the Board of Directors
          providing for the designation of any series of the Serial Preferred
          Stock). Such affirmative vote shall be required notwithstanding the
          fact that no vote may be required, or that a lesser percentage may be
          specified, by law or in any agreement with any national securities
          exchange or otherwise.

     (2)  DEFINITION OF "BUSINESS COMBINATION."  The term "Business Combination"
          as used in this Article ELEVENTH shall mean any transaction which is
          referred to in any one or more of clauses (a) though (e) of such
          paragraph (1) of this paragraph A.

B.   WHEN HIGHER VOTE IS NOT REQUIRED. The provisions of paragraph A of this
Article ELEVENTH shall not be applicable to any particular Business Combination,
and such Business Combination shall require only such affirmative vote as is
required by law and any other provisions of this Restated Certificate of
Incorporation, if all of the conditions specified in either of the following
paragraphs (1) and (2) are met:

                                       -9-

<PAGE>

          (1)  APPROVAL BY CONTINUING DIRECTORS. The Business Combination shall
               have been approved by a majority of the Continuing Directors (as
               hereinafter defined.)

          (2)  PRICE AND PROCEDURE REQUIREMENTS. All of the following conditions
               shall have been met:

               (a)  The aggregate amount of the cash and the Fair Market Value
                    as of the date of the consummation of the Business
                    Combination of consideration other than cash to be received
                    per share by holders of Common Stock in such Business
                    Combination shall be at least equal to the highest of the
                    following:

                    (i)   (if applicable) the highest per share price
                          (including any brokerage commissions, transfer taxes
                          and soliciting dealers fees) paid by the Interested
                          Stockholder for any shares of Common Stock acquired
                          by it (A) within the two-year period immediately
                          prior to the first public announcement of the proposal
                          of the Business Combination (the "Announcement Date")
                          or (B) in the transaction in which it became an
                          Interested Stockholder, whichever is higher;

                    (ii)  the Fair Market Value per share of Common Stock on
                          the Announcement Date or on the date on which the
                          Interested Stockholder became an Interested
                          Stockholder (such latter date is referred to in this
                          Article ELEVENTH as the "Determination Date"),
                          whichever is higher; and

                    (iii) (if applicable) the price per share equal to the Fair
                          Market Value per share of Common Stock determined
                          pursuant to subparagraph B(2)(a)(ii) above, multiplied
                          by the ratio of (A) the highest per share price
                          (including any brokerage commissions, transfer taxes
                          and soliciting dealers fees) paid by the Interested
                          Stockholder for any shares of Common Stock acquired
                          by it within the two-year period immediately prior to
                          the Announcement Date to (B) the Fair Market Value
                          per share of Common Stock on the first day in such
                          two-year period upon which the Interested Stockholder
                          acquired any shares of Common Stock.

               (b)  The aggregate amount of the cash and the Fair Market Value
                    as of the date of the consummation of the Business
                    Combination of consideration other than cash to be received
                    per share by holders of shares of any other class of
                    outstanding Voting Stock (other than Institutional Voting
                    Stock, as hereinafter defined) shall be at least equal to
                    the highest of the following (it being intended that the
                    requirements of this subparagraph (B)(2)(b) shall be
                    required to be met with respect to every class of
                    outstanding Voting Stock

                                       -10-

<PAGE>

                    (other than Institutional Voting Stock)), whether or not
                    the Interested Stockholder has previously acquired any
                    shares of a particular class of Voting Stock:

                    (i)   (if applicable) the highest per share price (including
                          any brokerage commissions, transfer taxes and
                          soliciting dealers fees) paid by the Interested
                          Stockholder for any shares of such class of Voting
                          Stock acquired by it (A) within the two-year period
                          immediately prior to the Announcement Date or (B) in
                          the transaction in which it became an Interested
                          Stockholder, whichever is higher;

                    (ii)  (if applicable) the highest preferential amount per
                          share to which the holders of shares of such class of
                          Voting Stock are entitled in the event of any
                          voluntary or involuntary liquidation, dissolution or
                          winding up of the Corporation;

                    (iii) the Fair Market Value per share of such class of
                          Voting Stock on the Announcement Date or on the
                          Determination Date, whichever is higher; and

                    (iv)  (if applicable) the price per share equal to the Fair
                          Market Value per share of such class of Voting Stock
                          determined pursuant to subparagraph B(2)(a)(iii)
                          above, multiplied by the ratio of (A) the highest per
                          share price (including any brokerage commissions,
                          transfer taxes and soliciting dealers fees) paid by
                          the Interested Stockholder for any shares of such
                          class of Voting Stock acquired by it within the
                          two-year period immediately prior to the Announcement
                          Date to (B) the Fair Market Value per share of such
                          class of Voting Stock on the first day in such
                          two-year period upon which the Interested Stockholder
                          acquired any shares of such class of Voting Stock.

               (c)  The consideration to be received by holders of a particular
                    class of outstanding Voting Stock (including Common Stock)
                    shall be in cash or in the same form as the Interested
                    Stockholder has previously paid for shares of such class of
                    Voting Stock. If the Interested Stockholder has paid for
                    shares of any class of Voting Stock with varying forms of
                    consideration, the form of consideration for such class of
                    Voting Stock shall be either cash or the form used to
                    acquire the largest number of shares of such class of Voting
                    Stock previously acquired by it.

               (d)  After such Interested Stockholder has become an Interested
                    Stockholder and prior to the consummation of such Business
                    Combination: (i) except as approved by a majority of the
                    Continuing Directors, there shall have been no failure to
                    declare

                                       -11-

<PAGE>

                    and pay at the regular date therefor any full quarterly
                    dividends (whether or not cumulative) on the outstanding
                    Serial Preferred Stock; (ii) there shall have been (A) no
                    reduction in the annual rate of dividends paid on the
                    Common Stock (except as necessary to reflect any subdivision
                    of the Common Stock), except as approved by a majority of
                    the Continuing Directors, and (B) any increase in such
                    annual rate of dividends as necessary to reflect any
                    reclassification (including any reverse stock split),
                    recapitalization, reorganization or any similar transaction
                    which has the effect of reducing the number of outstanding
                    shares of the Common Stock, unless the failure so to
                    increase such annual rate is approved by a majority of the
                    Continuing Directors; and (iii) such Interested Stockholder
                    shall not have become the beneficial owner of any additional
                    shares of Voting Stock except as part of the transaction
                    which results in such Interested Stockholder becoming an
                    Interested Stockholder.

               (e)  After such Interested Stockholder has become an Interested
                    Stockholder, such Interested Stockholder shall not have
                    received the benefit, directly or indirectly (except
                    proportionately as a stockholder), of any loans, advances,
                    guarantees, pledges or other financial assistance or any
                    tax credits or other tax advantages provided by the
                    Corporation, whether in anticipation of or in connection
                    with such Business Combination or otherwise.

               (f)  A proxy or information statement describing the proposed
                    Business Combination and complying with the requirements
                    of the Securities Exchange Act of 1934 and the rules and
                    regulations thereunder (or any subsequent provisions
                    replacing such Act, rules or regulations) shall be mailed
                    to public stockholders of the Corporation at least 30 days
                    prior to the consummation of such Business Combination
                    (whether or not such proxy or information statement is
                    required to be mailed pursuant to such Act or subsequent
                    provisions).

C.   CERTAIN DEFINITIONS.  For the purposes of this Article ELEVENTH:

     (1)  A "person" shall mean any individual, firm, corporation or other
          entity.

     (2)  "Interested Stockholder" shall mean any person (other than the
          Corporation or any Subsidiary) who or which:

          (a)  is the beneficial owner, directly or indirectly, of more than
               20% of the voting power of the outstanding Voting Stock; or

          (b)  is an Affiliate of the Corporation and at any time within the
               two-year period immediately prior to the date in question was
               the beneficial owner, directly or indirectly, of 20% or more
               of the voting power of the then outstanding Voting Stock; or

                                       -12-

<PAGE>

          (c)  is an assignee of or has otherwise succeeded to any shares of
               Voting Stock which were at any time within the two-year period
               immediately prior to the date in question beneficially owned by
               any Interested Stockholder, if such assignment or succession
               shall have occurred in the course of a transaction or series of
               transactions not involving a public offering within the meaning
               of the Securities Act of 1933.

     (3)  A person shall be a "beneficial owner" of any Voting Stock:

          (a)  which such person or any of its Affiliates or Associates (as
               hereinafter defined) beneficially owns, directly or indirectly;
               or

          (b)  which such person or any of its Affiliates or Associates has (i)
               the right to acquire (whether such right is exercisable
               immediately or only after the passage of time), pursuant to any
               agreement, arrangement or understanding or upon the exercise of
               conversion rights, exchange rights, warrants or options, or
               otherwise, or (ii) the right to vote pursuant to any agreement,
               arrangement or understanding; or

          (c)  which are beneficially owned, directly or indirectly, by any
               other person with which such person or any of its Affiliates or
               Associates has any agreement, arrangement or understanding for
               the purpose of acquiring, holding, voting or disposing of any
               shares of Voting Stock.

     (4)  For purposes of subparagraph (2) of this paragraph C, the number of
          shares of Voting Stock deemed to be outstanding shall include shares
          deemed owned through application of subparagraph (3) of this paragraph
          C but shall not include any other shares of Voting Stock which may be
          issuable pursuant to any agreement, arrangement or understanding, or
          upon exercise of conversion rights, warrants or options, or
          otherwise.

     (5)  "Affiliate" or "Associate" shall have the respective meanings ascribed
          to such terms in Rule 12b-2 of the General Rules and Regulations under
          the Securities Exchange Act of 1934, as in effect on May 27, 1983.

     (6)  "Subsidiary" means any corporation of which a majority of any class of
          equity security is owned, directly or indirectly, by the Corporation;
          provided, however, that for the purposes of the definition of
          Interested Stockholder set forth in subparagraph (2) of this paragraph
          C, the term "Subsidiary" shall mean only a corporation of which a
          majority of each class of equity security is owned, directly or
          indirectly, by the Corporation.

     (7)  "Continuing Director" means any member of the Board of Directors of
          the Corporation (the "Board") who is unaffiliated with the
          Interested Stockholder and was a member of the Board prior to the
          time that the

                                       -13-

<PAGE>

          Interested Stockholder became an Interested Stockholder, and any
          successor of a Continuing Director who is unaffiliated with the
          Interested Stockholder and is recommended to succeed a Continuing
          Director by a majority of Continuing Directors then on the Board.

     (8)  "Fair Market Value" means: (a) in the case of stock, the highest
          closing sales price during the 30-day period immediately preceding
          the date in question of a share of such stock on the Composite Tape
          for New York Stock Exchange Listed Stocks, or, if such stock is not
          quoted on the Composite Tape for the New York Stock Exchange, or, if
          such stock is not listed on such Exchange, on the principal United
          States securities exchange registered under the Securities Exchange
          Act of 1934 on which such stock is listed, or, if such stock is not
          listed on any such exchange, the highest closing bid quotation with
          respect to a share of such stock during the 30-day period preceding
          the date in question on the National Association of Securities
          Dealers, Inc. Automated Quotations System or any system then in use,
          or if no such quotations are available, the fair market value on the
          date in question of a share of such stock as determined by the Board
          of Directors in good faith; and (b) in the case  of property other
          than cash or stock, the fair market value of such property on the date
          in question as determined by the Board of Directors in good faith.

     (9)  "Institutional Voting Stock" shall mean any class of Voting Stock
          which was issued to and continues to be held solely by one or more
          insurance companies, pension funds, commercial banks, savings banks
          or similar financial institutions or institutional investors.

     (10) In the event of any Business Combination in which the Corporation
          survives, the phrase "consideration other than cash" as used in
          subparagraphs (2)(a) and (b) of paragraph B of this Article ELEVENTH
          shall include the shares of Common Stock and/or the shares of any
          other class of outstanding Voting Stock retained by the holders of
          such shares.

D.   DETERMINATION BY DIRECTORS.  Notwithstanding anything to the contrary in
     this Article ELEVENTH, the directors of the Corporation shall have the
     power to determine for the purposes of this Article ELEVENTH, on the basis
     of information known to them after reasonable inquiry, (1) whether a
     person is an Interested Stockholder, (2) the number of shares of Voting
     Stock beneficially owned by any person, (3) whether a person is an
     Affiliate or Associate of another, (4) whether a class of Voting Stock is
     Institutional Voting Stock, and (5) whether the assets which are the
     subject of any Business Combination have, or the consideration to be
     received for the issuance or transfer of securities by the Corporation or
     any Subsidiary in any Business Combination has, an aggregate Fair Market
     Value of $1,000,000 or more.

                                       -14-

<PAGE>

E.   NO EFFECT ON FIDUCIARY OBLIGATIONS OF INTERESTED STOCKHOLDERS.  Nothing
     contained in this Article ELEVENTH shall be construed to relieve any
     Interested Stockholder from any fiduciary obligation imposed by law.

F.   AMENDMENT, REPEAL, ETC. Notwithstanding any other provisions of this
     Restated Certificate of Incorporation or the by-laws of the Corporation
     (and notwithstanding the fact that a lesser percentage may be specified
     by law, this Restated Certificate of Incorporation or the by-laws of the
     Corporation), the affirmative vote of the holders of 80% or more of the
     voting power of the shares of the then outstanding Voting Stock, voting
     together as a single class, shall be required to amend or repeal, or adopt
     any provisions inconsistent with, this Article ELEVENTH of this Restated
     Certificate of Incorporation.

     IN WITNESS WHEREOF, this Restated Certificate of Incorporation, which
only restates and integrates and does not further amend the provisions of the
Restated Certificate of Incorporation of this Corporation as heretofore
amended or supplemented, there being no discrepancies between those
provisions and the provisions of this Restated Certificate of Incorporation,
and it having been duly adopted by the Corporation's Board of Directors in
accordance with Section 245 of the Delaware General Corporation Law, has been
executed by its duly authorized officer this 5th day of October, 1995.

                              WEATHERFORD ENTERRA, INC.



                              By   /s/ H. Suzanne Thomas
                              -----------------------------------------------
                                   H. Suzanne Thomas
                                   Senior Vice President, Secretary and
                                   General Counsel


                                       -15-



<PAGE>



                            WEATHERFORD ENTERRA, INC.

                             1991 STOCK OPTION PLAN
                 AS AMENDED AND RESTATED THROUGH OCTOBER 5, 1995


     1.    PURPOSE.  This 1991 Stock Option Plan (the "Plan") of Weatherford
Enterra, Inc. (the "Company"), for executive officers and other key employees
(who may be members of the Board of Directors) of the Company and of certain
related corporations, and others providing services to the Company and such
related corporations (an "Optionee"), is intended to advance the best
interest of the Company and those related corporations by providing those
persons who have a substantial responsibility for its management and growth
with additional incentive and by increasing their proprietary interest in the
success of the Company and those related corporations--thereby encouraging
them to continue their employment or affiliation.

     2.    ADMINISTRATION.  The Plan shall be administered by a committee to
be appointed by the Board of Directors of the Company (hereinafter called the
"Committee"); and all questions of interpretation and application of the Plan,
or of options granted hereunder (hereinafter called the "Options") shall be
subject to the determination, which shall be final and binding, of the
Committee.  The Committee shall consist of not less than three members of the
Board of Directors, all of whom shall be "disinterested persons".  A
"disinterested person" is a person who at the time he exercises discretion with
respect to the grant of any Option is not, and for at least one year prior to
that time has not been, eligible to receive options under the Plan or under
other similar plans of the Company.  A majority of its members will constitute a
quorum.  All determinations of the Committee will be made by a majority of its
members.  Any decision or determination reduced to writing and signed by a
majority of the members will be as effective as if it had been made by a
majority vote at a meeting properly called and held.  The Plan shall be
administered in such a manner as to permit the Options granted hereunder which
are designated as such to qualify as "incentive stock options" ("Incentive
Options") as described in section 422A of the Internal Revenue Code of 1986, as
amended (the "Code").

     3.    (a)  SHARES AVAILABLE.  The stock subject to the Options and
other provisions of the Plan shall be shares of the Company's Common Stock,
$0.10 par value (the "Stock").  The total amount of the Stock with respect to
which Options may be granted shall not exceed in the aggregate 1,814,894 shares;
provided, that such aggregate number of shares shall be subject to adjustment in
accordance with the provisions of Paragraph 18 hereof.  Such shares may be
treasury shares or authorized but unissued shares.



                                      - 1 -
<PAGE>



            (b)   MAXIMUM AWARD.  The maximum aggregate number of shares of
Stock available for Options to any one Optionee during any 12-month period is
200,000.

            (c)   SHARE COUNTING.  For purposes of determining at any time the
number of shares that remain available for grant under this Plan, the number of
shares then authorized pursuant to Section 3 of the Plan shall be (i) decreased
by the "gross" number of shares issued pursuant to exercised Options, (ii)
decreased by the "gross" number of shares issuable pursuant to outstanding
unexercised Options, and (iii) increased by the difference between the "gross"
number of Shares and the "net" number of shares issued pursuant to exercised
Options.  As used herein, the "gross" number of shares refers to the maximum
number of shares that may be issued upon the exercise of an Option.  The "net"
number of shares refers to the net number of shares actually issued to an
Optionee upon exercise of an Option, after reducing the "gross" number of shares
by the number of shares tendered back to the Company in payment of the Option
Price (as defined hereinafter) for the satisfaction of any tax payment
obligation.  If an Optionee shall forfeit, voluntarily surrender or otherwise
permanently lose his or her right to exercise an Option under any provision of
this Plan or otherwise, or if any Option shall terminate or expire pursuant to
its terms, the shares subject to the Option shall once again be available to be
awarded and issued under this Plan pursuant to a new Option grant hereunder.

      4.   AUTHORITY TO GRANT OPTIONS.  The Committee may grant from time to
time to such eligible individuals as it shall from time to time determine an
Option, or Options, to buy a stated number of shares of Stock under the terms
and conditions of the Plan.  With respect to each Option, the Committee shall
specify whether such Option shall constitute an Incentive Option or an Option
not intended to qualify as an Incentive Option (a "Nonqualified Option").
Subject only to any applicable limitations set forth elsewhere in the Plan, the
number of shares of Stock to be covered by any Option shall be as determined by
the Committee.

     5.    ELIGIBILITY.  The individuals who shall be eligible to receive
Incentive Options shall be such executive officers and other key employees (who
may be members of the Board of Directors) of the Company, or of any parent or
subsidiary corporation, as the Committee shall determine from time to time.
With respect to Incentive Options, any reference to a parent or subsidiary
corporation shall mean a parent corporation within the meaning of section 425(e)
of the Code or a subsidiary corporation within the meaning of section 425(f) of
the Code.  The individuals who shall be eligible to receive Nonqualified Options
shall be such executive officers and other key employees (who may be members of
the Board of Directors) of the Company, or of any parent or subsidiary
corporation, or any other person performing services for the Company or any
parent or subsidiary corporation, as the Committee shall determine from time to
time.  With respect to Nonqualified Options, any reference to a parent
corporation shall mean a corporation which has actual control of the Company
through its direct or indirect


                                      - 2 -
<PAGE>



ownership of not less than 51 percent of each class of voting stock of the
Company; and any reference to a subsidiary corporation shall mean a corporation
of which the Company owns, directly or indirectly, not less than 40 percent of
each class of voting stock.

     6.    OPTION PRICE.  The price at which shares may be purchased pursuant
to an Option (the "Option Price") shall be determined by the Committee at the
time each Option is granted but shall not be less than 100 percent of the Fair
Market Value (as defined hereinafter) of the shares of Stock on the date the
Option is granted.  In the case of any employee of the Company or a parent or
subsidiary corporation who owns stock possessing more than 10 percent of the
total combined voting power of all classes of stock  of the corporation
employing the employee or of its parent or subsidiary corporation, the price at
which shares may be so purchased under an Incentive Option shall be not less
than 110 percent of the Fair Market Value of the Stock on the date the Incentive
Option is granted.  "Fair Market Value" for purposes of this Plan means the
average of the high and low reported sales prices per share of Stock (as
reported on the New York Stock Exchange) as of the relevant measuring date, or
if there is no sale on the New York Stock Exchange on that date, then as of the
next following day on which there is a sale.

     7.    DURATION OF OPTIONS.  Each Option shall expire on the tenth (10th)
anniversary date of its grant.  In the case of any employee of the Company who
owns stock possessing more than 10 percent of  the total combined voting power
of all classes of stock of the corporation employing the employee or of its
parent or subsidiary corporation, no Incentive Option shall be exercisable after
the expiration of five years after the date such Incentive Option is granted.
The Committee in its discretion may provide that an Option shall be exercisable
during such 10-year period or five-year period, as the case may be, or during
any lesser period of time.

     8.    MAXIMUM VALUE OF STOCK SUBJECT TO INCENTIVE OPTIONS.
Notwithstanding any other provisions of the Plan to the contrary, the aggregate
Fair Market Value (determined as of the date the Incentive Option is granted) of
the Stock with respect to which Incentive Options are exercisable for the first
time by the Optionee in any calendar year (under this Plan and any other
incentive stock option plan(s) of the Company and any parent and subsidiary
corporation) shall not exceed $100,000.

     9.    AMOUNT EXERCISABLE.  Each Option may be exercised, so long as it is
valid and outstanding, from time to time, in whole or in part, in such manner
and subject to such conditions, as the Committee in its discretion may provide
in the option agreement (described in Paragraph 22 hereof).



                                      - 3 -
<PAGE>



      10.   EXERCISE OF OPTIONS.

            (a)   NOTICE.  Options shall be exercised by the delivery of
written notice (the "Exercise Notice") to the Secretary of the Company setting
forth the number of shares with respect to which the Option is to be exercised
and the address to which the certificates representing shares of the Stock
issuable upon the exercise of such Option shall be mailed (the "Exercise Date").
The date on which the Exercise Notice is delivered to the Company is the "Notice
Date".

            (b)   PAYMENT.  Unless otherwise prescribed by the Committee, the
Optionee shall tender to the Company on, or within three business days after,
the Exercise Date full payment of the Option Price for the shares of Stock,
together with any federal, state or local taxes required to be collected or
withheld by the Company in connection with the exercise of the Option ("Taxes"),
in cash (by personal check, cashier's check, certified check, bank draft or
postal or express money order payable to the order of the Company or by payroll
deduction).  Alternatively, subject to the provisions of Rule 16b-3 of the
Securities Exchange Act of 1934, as amended (the "Exchange Act"), payment of the
Option Price and any Taxes may be made by the Optionee's delivering to the
Company the Exercise Notice together with irrevocable instructions to a broker
to promptly deliver to the Company an amount equal to the Option Price of such
shares of Stock and any Taxes, such amount being either from loan proceeds or
from the sale of the shares of Stock to be issued to the Optionee.
Alternatively, unless otherwise provided in the option agreement, payment of the
Option Price and any Taxes may be made in whole or in part in shares of Stock
previously issued to the Optionee, if at the time of delivery of the Exercise
Notice (i) the Company has unrestricted earned surplus in an amount not less
than the Option Price of such shares, (ii) all accrued cumulative preferential
dividends and other current preferential dividends on all outstanding preferred
stock of the Company have been fully paid, (iii) the reacquisition or exchange
by the Company of its own shares for the purpose of enabling such Optionee to
exercise such Option is otherwise permitted by applicable law and without any
vote or consent of any shareholder of the Company and would not result in the
Company's being in violation of any agreement by which it is bound, and (iv)
there shall have been adopted, and there is in full force and effect, a
resolution of the Board of Directors of the Company authorizing the
reacquisition by the Company of its own shares for such purpose.  If payment is
made in whole or in part in shares of Stock, then the Optionee shall deliver to
the Company, in payment of the Option Price of the shares with respect of which
such Option is exercised, (i) certificates registered in the name of such
Optionee representing a number of shares of Stock legally and beneficially owned
by such Optionee, free of all liens, claims, and encumbrances of every kind, and
having a Fair Market Value on the date of delivery of such notice that is not
greater than the Option Price of the shares with respect to which such Option
is to be exercised, such certificates to be accompanied by stock powers duly
endorsed in blank by the record holder of the shares represented by such
certificates, with the signature of such record holder guaranteed by a national
banking


                                      - 4 -
<PAGE>



association, and (ii) if the Option Price of the shares with respect to which
such Option is to be exercised exceeds the Fair Market Value of such
certificates, payment of the difference shall be made as provided above.
Notwithstanding the foregoing provisions of this Paragraph 10, the Committee, in
its sole discretion, may refuse to accept shares of Stock in payment of the
Option Price of the shares with respect to which such Option is to be exercised
and, in that event, any certificates representing shares of Stock which were
delivered to the Company with such written notice shall be returned to such
Optionee together with notice by the Company to such Optionee of the refusal of
the Committee to accept such shares of Stock.

            (c)   STOCK PURCHASE AGREEMENT.  In its sole and absolute
discretion, the Committee may require, as an additional condition to the
issuance of Stock upon exercise of an Option, that the Optionee furnish the
Committee with an executed copy of a stock purchase agreement, in such form as
may be required by the Committee, at the time the Exercise Notice is delivered
to the Company or within three business days after the proposed agreement is
presented to the Optionee, if later.

            (d)   SHARE CERTIFICATES.  As promptly as practicable after the
receipt by the Company of (i) the Exercise Notice from the Optionee setting
forth the number of shares with respect to which such Option is to be exercised,
(ii) payment of the Option Price of such shares in the form required by the
foregoing provisions of this Paragraph 10, and (iii) a fully executed stock
purchase agreement in the form required by the Committee, if any is so required,
the Company shall cause to be delivered to such Optionee (or to a specified
escrow agent, if so required under the terms of any applicable stock purchase
agreement) certificates representing the number of shares of Stock with respect
to which such Option has been so exercised, such certificates to be registered
in the name of such Optionee, provided that such delivery shall be considered to
have been made when such certificates shall have been mailed, postage prepaid,
to such Optionee at the address specified for such purpose in the Exercise
Notice from the Optionee to the Company.

            (e)   VALUATION.  Any calculation with respect to an Optionee's
income, required tax withholding or otherwise shall be made using the Fair
Market Value of such shares of Stock on the Notice Date, whether or not the
Exercise Notice is delivered to the Company before or after the close of trading
on that date, unless otherwise specified by the Committee.

      11.  TRANSFERABILITY OF OPTIONS.  Options shall not be transferable by
the Optionee otherwise than by will or under the laws of descent and
distribution, and shall be exercisable, during his lifetime, only by the
Optionee.

      12.  TERMINATION OF EMPLOYMENT OR AFFILIATION OF OPTIONEE.  Except as
may be otherwise expressly provided in this Paragraph 12 or elsewhere in the
Plan, if the Optionee's employment with the Company is terminated, the Optionee
shall have the


                                      - 5 -
<PAGE>



right to exercise the Option, to the extent to which he was entitled to exercise
such Option immediately prior to such termination, at any time during the period
ending the earlier of 30 days after such termination and the expiration of the
Option.  Whether authorized leave of absence, or absence on military or
government service, shall constitute severance of the employment or affiliation
relationship between the Company and the Optionee shall be determined by the
Committee at the time thereof.  In the event of the death of the Optionee while
affiliated with or in the employ of the Company, or within three months after
his retirement or termination due to age or disability as provided below, such
Option shall terminate on the earlier of one year following the date of such
death and the expiration of the Option.  After the death of the Optionee, the
time for exercise of the Option shall be accelerated and the Option shall be
exercisable in full, and the Optionee's executors, administrators or any persons
to whom his Option may be transferred by will or by the laws of descent and
distribution, shall have the right, at any time prior to such termination, to
exercise the Option, in whole or in part, without regard to any limitations set
forth in or imposed pursuant to Paragraph 9 hereof.  If, before the date of
expiration of the Option, the Optionee shall be retired in good standing from
the employ of the Company, or the affiliation shall be severed for reasons of
age or disability under the then established rules of the Company, the Option
shall terminate on the earlier of three months after the date of such retirement
or severance and the expiration of the Option.  In the event of such retirement
or severance, the Optionee shall have the right prior to the termination of such
Option to exercise the Option to the extent to which he was entitled to exercise
such Option immediately prior to such retirement or severance.  For the purpose
of determining the employment relationship or other affiliation between the
Company and the Optionee, employment by or affiliation with any parent or
subsidiary corporation shall be considered employment by or affiliation with the
Company.

      13.  REQUIREMENTS OF LAW.  The Company shall not be required to sell or
issue any shares of Stock under any Option if the issuance of such shares shall
constitute or result in a violation by the Optionee or the Company of any
provision of any law, statute or regulation of any governmental authority.
Specifically in connection with the Securities Act of 1933, as now in effect or
hereafter amended (the "Securities Act"), upon exercise of any Option, the
Company shall not be required to issue such shares unless the Committee has
received evidence satisfactory to it to the effect that the Optionee will not
transfer such shares except pursuant to a registration statement in effect under
such Act or unless an opinion of counsel satisfactory to the Company has been
received by the Company to the effect that such registration is not required.
Any determination in this connection by the Committee shall be final, binding
and conclusive.  The Company may, but shall in no event be obligated to,
register the shares of Stock covered hereby pursuant to the Securities Act.  In
the event the shares of Stock issuable on exercise of an Option are not
registered under the Securities Act, the Company may imprint the following
legend or any other legend which counsel for the Company considers necessary or
advisable to comply with the Securities Act:



                                      - 6 -
<PAGE>



            "The shares of stock represented by this certificate have not been
      registered under the Securities Act of 1933 or under the securities laws
      of any State and may not be sold or transferred except upon such
      registration or upon receipt by the Corporation of an opinion of counsel
      satisfactory to the Corporation, in form and substance satisfactory to the
      Corporation, that registration is not required for such sale or transfer."

The Company shall not be obligated to take any other affirmative action in order
to cause the exercise of an Option or the issuance of shares pursuant thereto to
comply with any law or regulation of any governmental authority.

     14.   NO RIGHTS AS STOCKHOLDER.  No Optionee shall have rights as a
stockholder with respect to shares of Stock covered by his Option until the date
of issuance of a stock certificate for such shares; and, except as otherwise
provided in Paragraph 18 hereof, no adjustment for dividends, or otherwise,
shall be made if the record date therefor is prior to the date of issuance of
such certificate.

     15.   EMPLOYMENT OR AFFILIATION OBLIGATION.  The granting of an Option
shall not impose upon the Company or any parent or subsidiary corporation any
obligation to employ or become affiliated with, or continue to employ or be
affiliated with, any Optionee; and the right of the Company or any parent or
subsidiary corporation to terminate the employment or affiliation of any person
shall not be diminished or affected by reason of the fact that an Option has
been granted to him.

     16.   FORFEITURE FOR COMPETITION.  Notwithstanding any other provision of
the Plan, if at any time during the term of an Option granted hereunder the
Committee finds by a majority vote, after full consideration of the facts
presented on behalf of the Company and the Optionee, that such Optionee, without
the written consent of the Company, directly or indirectly owns, operates,
manages, controls or participates in the ownership, management, operation or
control of, or is employed by or is paid as a consultant or as an independent
contractor by a business which competes with the Company or any parent or
subsidiary corporation in the trade area served by the Company or any parent or
subsidiary corporation at any time during the term of the Option but prior to
its exercise in full and in which area the Optionee had performed services for
the Company or any parent or subsidiary corporation while employed by it, the
Optionee shall forfeit all unexercised Options and all exercised Options under
which the Company has not yet delivered the certificates and which had been
granted to the Optionee by the Committee earlier.  The preceding provisions of
this Paragraph 16 shall not be deemed to have been violated solely by reason of
the  Optionee's ownership of a stock or securities of any publicly owned
corporation, provided that such ownership does not result in effective control
of such corporation, and provided further that written notice of such ownership,
if in excess of one percent of the outstanding stock of said corporation, is
given to the Committee within 60 days after the later of


                                      - 7 -
<PAGE>



(i) the date on which the Optionee is notified of the award of an Option, or
(ii) the date on which such ownership is acquired.

      17.  FORFEITURE FOR DISHONESTY.  Notwithstanding anything to the
contrary in the Plan, if the Committee finds by a majority vote, after full
consideration of the facts presented on behalf of both the Company and the
Optionee, that the Optionee has been engaged in fraud, embezzlement, theft,
commission of a felony or proven dishonesty in the course of his employment by
or affiliation with the Company or any parent or subsidiary corporation which
damaged the Company or any parent or subsidiary corporation, or for disclosing
trade secrets of the Company or any parent or subsidiary corporation, the
Optionee shall forfeit all unexercised Options and all exercised Options under
which the Company has not yet delivered the certificates and which had been
granted the Optionee by the Committee earlier.  The decision of the Committee as
to the cause of an Optionee's discharge and the damage done to the Company or
any parent or subsidiary corporation shall be final.  No decision of the
Committee, however, shall affect the finality of the discharge of such Optionee
by the Company or any parent or subsidiary corporation in any manner.

      18.  CHANGES IN THE COMPANY'S CAPITAL STRUCTURE.  The existence of
outstanding Options shall not affect in any way the right or power of the
Company or its stockholders to make or authorize all adjustments,
recapitalizations, reorganizations or other changes in the Company's capital
structure or its business, or any merger or consolidation of the Company, or any
issue of bonds, debentures, preferred or prior preference stock ahead of or
affecting the Stock or the rights thereof, or the dissolution or liquidation of
the Company, or any sale or transfer of all or any part of its assets or
business, or any other corporate act or proceeding, whether of a similar
character or otherwise.

            If the Company shall effect a subdivision or consolidation of shares
or other capital readjustment, the payment of a stock dividend, or other
increase or reduction of the number of shares of Stock outstanding, without
receiving compensation therefor in money, services or property, then (a) the
number, class and per share price of shares of Stock subject to outstanding
Options hereunder shall be appropriately adjusted in such a manner as to entitle
an Optionee to receive upon exercise of an Option, for the same aggregate cash
consideration, the same total number and class of shares as he would have
received had he exercised his Option in full immediately prior to the event
requiring the adjustment; and (b) the number and class of shares then reserved
for issuance under the Plan shall be adjusted by substituting for the total
number and class of shares of Stock then reserved that number and class of
shares of stock that would have been received by the owner of an equal number of
outstanding shares of each class of stock as the result of the event requiring
the adjustment; provided in each case that with respect to Incentive Stock
Options and Nonqualified Options intended to be qualified as performance-based
compensation under Section 162(m)(4)(c) of the Code, no adjustment shall be
authorized to the extent that the


                                      - 8 -
<PAGE>



adjustment would cause the Plan to violate Section 422(b)(1) of the Code or
would cause any part of such Option to fail to qualify under Section 162(m) of
the Code, as the case may be, or any successor provisions thereto, and provided
further, that the number of shares of Stock subject to any Option shall always
be a whole number.

            After a merger of one or more corporations into the Company or after
a consolidation of the Company and one or more corporations in which the Company
shall be the surviving corporation, without regard to any limitations set forth
or imposed pursuant to Paragraph 9 hereof, each holder of an outstanding Option
shall, at no additional cost, be entitled upon exercise of such Option to
receive (subject to any required action by stockholders) in lieu of the number
and class of shares as to which such Option shall then be so exercisable, the
number and class of shares of stock or other securities to which such Optionee
would have been entitled pursuant to the terms of the agreement of merger or
consolidation if, immediately prior to such merger or consolidation, such
Optionee had been the holder of record of the number and class of shares of
Stock equal to the number and class of shares as to which such Option shall be
so exercised.

            Notwithstanding any other provision of this Paragraph 18, if (i) the
Company merges or consolidates with any other corporation (other than a wholly
owned subsidiary) and is not the surviving corporation (or survives only as a
subsidiary of another corporation), (ii) the Company sells all or substantially
all of its assets to any other person or entity (other than a wholly owned
subsidiary), (iii) the Company is dissolved or liquidated, or (iv) there is a
Change of Control (as hereinafter defined) of the Company that is not approved,
recommended or supported by the Board of Directors of the Company in actions
taken prior to, and with respect to, such Change of Control, the Optionee shall
have the right, within 30 days after the approval by the stockholders of the
Company of such merger or consolidation, sale of assets or dissolution or the
occurrence of such Change of Control, to elect to surrender all or part of such
Options outstanding, irrespective of whether such Options are then exercisable,
in exchange for a cash payment by the Company in an amount equal to the number
of shares of Stock subject to the Option held by such Optionee multiplied by the
difference between the Change of Control Price (as defined below) and the Option
Price of a particular Option; provided, however, that if the occurrence of an
event specified herein is within six months after the date of grant of a
particular Option held by an Optionee who is subject to Section 16(b) of the
Exchange Act, any cash payment to the Optionee shall be made on the day which is
six months and one day after the date of grant of such Option.  Notwithstanding
the foregoing, if any right granted pursuant to the foregoing would make any of
the occurrences specified above ineligible for pooling of interests accounting
treatment under APB No. 16 that but for this provision would otherwise be
eligible for such accounting treatment, the Optionee shall receive shares of
Stock with a Fair Market Value equal to the cash that would otherwise be payable
hereunder in substitution for the cash.  If an Optionee does not elect to
surrender all outstanding Options for a cash payment (or shares of Stock) as
provided


                                      - 9 -
<PAGE>



above, such Options, or replacement or substitution Options to be issued by the
surviving or acquiring corporation, shall become fully exercisable, to the
extent they are not, and shall remain exercisable for three months after the
Optionee's termination of employment or until the stated expiration of the term
of the Option, whichever is shorter. In the event that the consideration offered
to stockholders of the Company in any transaction described in this paragraph
consists of anything other than cash, the Committee shall determine the fair
cash equivalent of the portion of the consideration offered which is other than
cash.

            For purpose of this Plan, "Change of Control" means:  a)  any
individual, entity or group (within the meaning of Section 13(d)(3) or 14(d)(2)
of the Exchange Act) (a "Person") acquires of beneficial ownership of 20 percent
or more of either (i) the then outstanding shares of Stock or (ii) the combined
voting power of the then outstanding voting securities of the Company entitled
to vote generally in the election of directors; provided, however, that for
purposes of this subsection (a), a Person shall not include the Company or any
subsidiary or any employee benefit plan (or related trust) sponsored or
maintained by the Company or any subsidiary; or b) as a result of, or in
connection with, a contested election for directors, the persons who were
directors of the Company before such election shall cease to constitute a
majority of the Board of Directors of the Company.  The Committee shall
determine whether a Change of Control has occurred within the herein meaning and
shall determine whether any such Change of Control has been approved,
recommended or supported by the Board of Directors of the Company, and its
determination shall be final and conclusive.

            For purposes of this Plan, "Change of Control Price" means the
higher of (i) the highest reported sales price of a share of Stock in any
transaction reported on the New York Stock Exchange during the 60-day period
prior to and including the date of the approval by the stockholders of the
Company of such merger, sale of assets or dissolution or the occurrence of the
Change of Control and (ii) if the Change of Control is the result of a tender or
exchange offer, the highest price per share of Stock paid in such tender or
exchange offer; provided, however, that in the case of an Option which is held
by an Optionee who is subject to Section 16(b) of the Exchange Act and was
granted within six months of the occurrence of an event specified herein, then
the Change of Control Price for such Option shall be the Fair Market Value of
the Stock on the date such Option is cancelled.

            Except as hereinbefore expressly provided, the issue by the Company
of shares of any class, for cash or property, or for labor or services, either
upon direct sale or upon the exercise of rights or warrants to subscribe
therefor, or upon conversion of shares or obligations of the Company convertible
into such shares or other securities, shall not affect, and no adjustment by
reason thereof shall be made with respect to, the number, class or price of
shares of Stock then subject to outstanding Options.



                                      - 10 -
<PAGE>



      19.  SUBSTITUTION OPTIONS.  Options may be granted under this Plan from
time to time in substitution for stock options held by employees of other
corporations who are about to become employees of or affiliated with the Company
or any parent or subsidiary corporation as the result of a merger or
consolidation of the employing corporation with the Company or any parent or
subsidiary corporation, or the acquisition by the Company or any parent or
subsidiary corporation of the assets of the employing corporation, or the
acquisition by the Company or any parent or subsidiary corporation of stock of
the employing corporation as the result of which it becomes a subsidiary of the
Company.  The terms and conditions of the substitute Options so granted may vary
from the terms and conditions set forth in this Plan to such extent as the Board
of Directors of the Company at the time of grant may deem appropriate to
conform, in whole or in part, to the provisions of the stock options in
substitution for which they are granted.

     20.   AMENDMENT OR TERMINATION OF PLAN.  The Board of Directors may
modify, revise or terminate this Plan at any time and from time to time;
provided, however, that without the further approval of the holders of at least
a majority of the outstanding shares of Stock, the Board of Directors may not
(i) materially increase the benefits accruing to participants under the Plan;
(ii) change the aggregate number of shares of Stock which may be issued under
Options pursuant to the provisions of the Plan; (iii) reduce the Option Price at
which Options may be granted to an amount less than the Fair Market Value per
share at the time the Option is granted; or (iv) change the class of employees
eligible to receive Options; provided, however, that the Board shall have the
power to make such changes in the Plan and in the regulations and administrative
provisions hereunder or in any outstanding Incentive Option as in the opinion of
counsel for the Company may be necessary or appropriate from time to time to
enable any Incentive Option granted pursuant to the Plan to qualify as an
incentive stock option or such other stock option as may be defined under the
Code so as to receive preferential federal income tax treatment.

      21.  INTENTIONALLY OMITTED.

      22.  WRITTEN AGREEMENT.  Each Option granted hereunder shall be embodied
in a written option agreement, which shall be subject to the terms and
conditions prescribed above and shall be signed by the Optionee and by an
authorized officer of the Company for and in the name and on behalf of the
Company.  Such an option agreement shall contain such other provisions as the
Committee in its discretion shall deem advisable.

      23.  INDEMNIFICATION OF THE COMMITTEE AND THE BOARD OF DIRECTORS.  With
respect to administration of the Plan, the Company shall indemnify each present
and future member of the Committee and the Board of Directors against, and each
member of the Committee and the Board of Directors shall be entitled without
further act on his part to indemnity from the Company for, all expenses
(including the amount of


                                      - 11 -
<PAGE>



judgments and the amount of approved settlements made with a view to the
curtailment of costs of litigation, other than amounts paid to the Company
itself) reasonably incurred by him in connection with or arising out of any
action, suit or proceeding in which he may be involved by reason of his being or
having been a member of the  Committee and the Board of Directors, whether or
not he continues to be such member of the Committee and the Board of Directors
at the time of incurring such expenses; provided, however, that such indemnity
shall not include any expenses incurred by any such member of the Committee and
the Board of Directors (i) in respect of matters as to which he shall be finally
adjudged in any such action, suit or proceeding to have been guilty of gross
negligence or willful misconduct in the performance of his duty as such member
of the Committee and the Board of Directors, or (ii) in respect of any matter in
which any settlement is effected, to an amount in excess of the amount approved
by the Company on the advice of its legal counsel; and provided further, that no
right of indemnification under the provisions set forth herein shall be
available to or enforceable by any such member of the Committee and the Board of
Directors unless, within 60 days after institution of any such action, suit or
proceeding, he shall have offered the Company, in writing, the opportunity to
handle and defend same at its own expense.  The foregoing right of
indemnification shall inure to the benefit of the heirs, executors or
administrators of each such member of the Committee and the Board of Directors
and shall be in addition to all other rights to which such member of the
Committee and the Board of Directors may be entitled as a matter of law,
contract or otherwise.

     24.   EFFECT OF AMENDMENTS.  This 1991 Stock Option Plan, as amended
through October 5, 1995, constitutes a complete amendment and restatement of
such Plan.  Any Option granted under the Plan shall be subject to the terms of
the Plan as in effect at the time the Option is granted; provided, however, that
by agreement between the Committee and the Optionee, any such Option may be
amended to incorporate and become subject to the provisions of the Plan as
amended through a date which is subsequent to the date on which the Option was
granted.

     25.   EFFECTIVE DATE OF PLAN.  The Plan became effective March 19, 1991.
No Option shall be granted pursuant to this Plan after March 18, 2001.

                                       - 12 -


<PAGE>

                          WEATHERFORD ENTERRA, INC.
                       RESTRICTED STOCK INCENTIVE PLAN
               AS AMENDED AND RESTATED THROUGH OCTOBER 5, 1995


     1. INTRODUCTION AND STATEMENT OF PURPOSE.

     1.1  This Restricted Stock Incentive Plan (the "Plan") of Weatherford
Enterra, Inc. (the "Company"), for executive officers and other key employees
of the Company and certain related corporations ("Key Employees"), is
intended to advance the best interest of the Company (who may be members of
the Board of Directors) and those related corporations by providing those
persons who have significant ultimate responsibility for the management and
planning of the Company's operations and who directly influence the growth
and profits of the Company and those related corporations with additional
opportunities for meaningful capital accumulation, and by increasing their
proprietary interest in the success of the Company and those related
corporations, encourage their continued employment with the Company or those
related corporations. It is desired that the benefits available under this
Plan, when added to other benefits payable to Key Employees, will furnish
total compensation to those employees which is competitive in the Company's
industry.

     1.2  The Plan provides for two types of awards: Restricted Share grants
and Performance Share grants (collectively called "Share Grants"). Restricted
Share grants are designed to retain Key Employees in the employ of the
Company. Performance Share grants are designed to reward long-term and
short-term performance of Key Employees, such as reducing the debt-equity
ratio of the Company, achieving certain operating and net income goals or
stock appreciation goals (long-term), or selling or acquiring certain
business assets, identifying and developing successor candidates for Key
Employee positions or raising equity for the Company (short-term).

     1.3  A Share Grant under the Plan could consist of a combination of
Restricted Shares and Performance Shares, or could consist of only one type
of shares, at the Committee's sole discretion.

     2. ADMINISTRATION.

     2.1  The Plan shall be administered by a committee to be appointed by
the Board of Directors of the Company (hereinafter called the "Committee").
The Committee shall consist of not less than three members of the Board of
Directors, all of whom shall be "disinterested persons". A "disinterested
person" is a person who at the time he exercises discretion with respect to
the award of a Share Grant is not, and for at least one year prior to that
time has not been, eligible to receive Share Grants under the Plan or under
other similar plans of the Company. A majority of the Committee's members
will constitute a quorum and all determinations of the Committee will be made
by a majority of its members.


                                     -1-

<PAGE>

     2.2  The Committee is empowered to:

          (a)  Make all determinations regarding individuals eligible to
     participate in the Plan, including prospective employees of the Company
     who, upon commencing employment, would be Key Employees of the Company
     (the "Key Employees");

          (b)  Make all determinations and computations concerning the issuance
     of Restricted Shares and Performance Shares under the Plan and the number
     of shares to be granted to each Key Employee;

          (c)  Cause the Company to enter into a written agreement with each
     Key Employee setting forth the terms and provisions of the Share Grant
     awarding the Restricted Shares and Performance Shares (the "Share Grant
     Agreement");

          (d)  Make rules and regulations for the administration of the Plan
     which are not inconsistent with the terms and provisions hereof;

          (e)  Construe and administer all terms, provisions, conditions and
     limitations of the Plan in good faith;

          (f)  Make equitable adjustments for any mistakes or errors in the
     administration of the Plan or deemed by the Committee to be necessary as
     the result of any unusual situation or any ambiguity in the Plan; and

          (g)  Select, employ and compensate, from time to time, such
     consultants, accountants, attorneys and other agents and employees as the
     Committee may deem necessary or advisable for the proper and efficient
     administration of the Plan.

     2.3  The foregoing list of express powers is not intended to be either
complete or exclusive, and the Committee shall, in addition, have such
powers, whether or not expressly authorized, which it may deem necessary,
desirable, advisable or proper for the supervision and administration of the
Plan. Except as otherwise specifically provided herein, the decision or
judgment of the Committee on any question arising hereunder in connection
with the exercise of any of its powers shall be final, binding and conclusive
upon all parties concerned (including the Key Employee and any person
claiming by, through or under a Key Employee) and shall not be subject to
review.

     3. SHARES SUBJECT TO GRANT.

     3.1  The stock subject to the Share Grants and other provisions of the
Plan shall be shares of the Company's Common Stock, $.10 par value (the
"Stock"). The total amount of the Stock with respect to which Share Grants
may be granted shall not exceed in the aggregate 160,437 shares, except as
provided below. Distributions of shares hereunder may, at the Committee's
sole discretion, be made from authorized but unissued shares or shares
reacquired by the Company and held as treasury shares. Within such aggregate
maximum number of shares


                                     -2-

<PAGE>

there is no maximum number of such shares which may be issued as Restricted
Shares or Performance Shares.

     3.2  In the event that any Stock issued or granted under the Plan shall
be forfeited, for any reason, the aggregate number of additional shares of
Stock which may be issued or granted hereunder shall be increased by such
number of shares, and said shares of Stock so forfeited may again be the
subject of a Share Grant under the Plan.

     3.3  In the event that the issued and outstanding shares of the
Company's Stock should, as a result of any stock dividend, stock split or
spin-off, recapitalization, combination or exchange of shares, merger,
consolidation, acquisition of property or stock, separation,
reclassification, reorganization, liquidation, or other similar event, be
increased or decreased or changed into or exchanged for a different number or
kind of share of stock or other securities of the Company or of another
corporation, the number and class of additional shares or other securities
which may be issued under the Plan will be appropriately adjusted to reflect
such action. If any such adjustment results in a fractional share of Stock
being issuable under the Plan, such fraction will be disregarded.

     4.  ELIGIBILITY.  The individuals who shall be eligible to receive Stock
under this Plan shall be such executive officers and other key employees (who
may be members of the Board of Directors) of the Company, or of any parent or
subsidiary corporation, as the Committee shall determine from time to time.
Any reference to a parent corporation shall mean a corporation which has
actual control of the Company through its direct or indirect ownership of not
less than 51 percent of each class of voting stock of the Company; and any
reference to a subsidiary corporation shall mean a corporation of which the
Company owns, directly or indirectly, not less than 40 percent of each class
of voting stock.

     5. SHARE GRANTS.

     5.1  The Committee may cause the Company to issue, from time to time,
Restricted Shares or Performance Shares to, and enter into Share Grant
Agreements with, such Key Employees as the Committee, in its sole discretion,
may determine and designate. Subject to the final authority of the Committee,
the selection of the Key Employees may be based on recommendations of the
Company's Chief Executive Officer.

     5.2  If the Committee decides to make a Share Grant, the Committee will
designate the number of shares of Stock to be issued; whether the shares will
be Restricted Shares or Performance Shares or a combination of the two types
of shares; the nature of the restrictions on the Key Employee's ownership of
the shares; the time or times at which the restrictions on ownership will be
removed; the condition or conditions upon which the restrictions on ownership
will be removed; and such other terms and provisions, not inconsistent with
the Plan, as the Committee deems appropriate. The terms and provisions of the
Share Grant will be set forth in a Share Grant Agreement.


                                     -3-

<PAGE>

     5.3  If the Committee decides to award Performance Shares to a Key
Employee, in addition to the other terms and provisions of the Share Grant
Agreement, the Committee will determine the Key Employee's performance
objectives and specify the times within the Performance Period at which the
Key Employee's performance will be evaluated.

     5.4  The Committee will designate at the time of each Share Grant the
commencement date and length of the Performance Period. Performance Periods
with respect to Restricted Shares generally will be four years, although the
Committee will have the discretion to designate a different length for a
Performance Period, not less than three nor more than five years. Performance
Periods with respect to Performance Shares will be determined by the nature
of the applicable performance objectives and achievement thereof but in no
event less than six months nor more than eight years.

     5.5  The Committee shall have the authority to make a Share Grant to a
Key Employee at any time; however, the Committee generally will commence a
Share Grant for a Key Employee only one time per year.

     6. OWNERSHIP AND RESTRICTIONS ON OWNERSHIP OF SHARES.

     6.1  The Key Employee will own the shares of Stock from the date of the
Share Grant, subject to the restrictions on ownership and other terms and
provisions designated by the Committee and set forth in the Share Grant
Agreement.

     6.2. The Committee will determine whether a stock certificate
representing part or all of the shares granted under the Plan will be issued
to the Key Employee at the commencement of a Performance Period or at any
time prior to the unrestricted ownership of the shares vesting in the Key
Employee. In the event this occurs, the stock certificate will contain a
legend restricting the sale, exchange, transfer, assignment, pledge or other
disposition of the shares. In addition, the Committee will determine whether
a Key Employee will have the right to vote any of the shares prior to the
ownership restrictions being removed. The Committee will also determine
whether the Key Employee will have the right to receive any dividends paid on
any of such shares prior to the ownership restrictions being removed or
whether such dividends will be accrued and paid to the Key Employee only when
the restrictions on his ownership of the shares are removed.

     6.3  All shares of Stock granted pursuant to the Plan will be subject to
restrictions on ownership when granted, and a Key Employee will not be able
to sell, exchange, transfer, assign, pledge or otherwise dispose of such
shares until the restrictions on ownership are removed by the Committee in
accordance with the terms and provisions of the Plan and the Share Grant
Agreement. Further, the Key Employee may not assign, transfer or otherwise
dispose of any right or interest under the Share Grant Agreement, except as
provided therein.

     7. REMOVAL OF RESTRICTIONS ON OWNERSHIP OF SHARES.

     7.1  The Committee will determine, in its sole discretion, when the
restrictions on ownership of the shares of stock granted under this Plan will
be removed.


                                     -4-

<PAGE>

     7.2  The restrictions on the Key Employee's ownership of any Restricted
Shares will be removed on all such shares at the end of a Performance Period
or on a certain portion of such shares at times designated by the Committee
(such as annually). The Key Employee generally must be employed by the
Company at the designated time (or times) in order for the restrictions to be
removed, although the Committee can provide otherwise. In the event the Key
Employee's employment by the Company terminates prior to the ownership
restrictions on the Restricted Shares being removed, the Key Employee will,
upon the request of the Committee, for no consideration, forfeit all
Restricted Shares which remain subject to such restrictions and surrender to
the Company all stock certificates representing such shares, if any have been
issued and delivered to him.

     7.3  The restrictions on the Key Employee's ownership of any Performance
Shares will be removed upon the achievement of the Key Employee's performance
objectives or at the end of the Performance Period, unless the Committee has
specified otherwise, provided that the Key Employee is still employed by the
Company. In the event the Key Employee's employment with the Company
terminates prior to his achieving his performance objectives or prior to the
end of the Performance Period, the Key Employee will, upon the request of the
Committee, for no consideration, forfeit all or part, as applicable, of the
Performance Shares which remain subject to ownership restrictions and
surrender to the Company all stock certificates representing such shares, if
any have been issued and delivered to him.

     8.  HOLDING PERIOD.  Notwithstanding any other provision hereof, any
shares of stock granted hereunder must be held by the Key Employee for at
least six months prior to sale, assignment, transfer or exchange, and any
attempt to sell, assign, transfer or exchange such shares during the six
months after grant shall be void.

     9.  DEATH OR DISABILITY.

     9.1  Should a Key Employee's employment be terminated by death or total
and permanent disability prior to the removal of the ownership restrictions
on any shares of stock granted hereunder, the Committee has the right to
remove the restrictions on part or all of such shares. The Committee will
determine, in its sole discretion, whether and on which shares the
restrictions should be removed, based on the length of service the Key
Employee has in the Performance Period, the Key Employee's performance during
the Performance Period and such other matters as the Committee deems relevant.

     9.2  For purposes of the Plan, the Committee shall determine, in the
exercise of its discretion, whether or not a Key Employee is totally and
permanently disabled for purposes of the Plan and the date such disability
(if any) commenced. Any such determinations by the Committee shall be
conclusive and binding on the Key Employee and any person claiming by,
through or under the Key Employee. Any determination of total and permanent
disability and of the commencement date thereof will be made on the basis of
medical reports and other evidence satisfactory to the Committee and in
accordance with a uniform, non-discriminatory policy applied by the
Committee. However, such determinations will not be binding on the Company or
any Key Employee with respect to any other employee benefit or other plan or
insurance policy


                                     -5-

<PAGE>

wherein such determinations may be relevant, and need not be consistent with
any determinations made under any such other plan or insurance policy.

     10. EARLY RETIREMENT.  Should a Key Employee take early retirement at
the convenience of the Company prior to the removal of the ownership
restrictions on any shares of stock granted hereunder, the Committee has the
right to remove the restrictions on part or all of the shares. The Committee
will determine, in its sole discretion, whether and on which shares the
restrictions should be removed, based on the length of service the Key
Employee has in the Performance Period, the Key Employee's performance during
the Performance Period and such other matters as the Committee deems relevant.

     11. CHANGES IN THE COMPANY'S CAPITAL STRUCTURE.  Notwithstanding any
other provision of the Plan to the contrary, in the event of a Change of
Control (as defined below) occurs, all restrictions to which the Key
Employee's Restricted Shares or Performance Shares remained subject at such
time shall automatically terminate and such shares shall become fully vested
and transferable. The Company shall promptly deliver to the Key Employee
stock certificates for such shares without the legend restricting the sale,
exchange, transfer, assignment, pledge or other disposition, other than as
may be required by applicable Securities laws. For purposes of this
paragraph, a "Change of Control" shall mean:

          (a)  The acquisition by any individual, entity or group (within
     the meaning of Section 13(d)(3) or 14(d)(2) of the Securities Exchange
     Act of 1934, as amended (the "Exchange Act")) (a "Person") of beneficial
     ownership within the meaning of Rule 13d-3 promulgated under the Exchange
     Act) of 30 percent of more of either (i) the then outstanding shares of
     common stock of the Company (the "Outstanding Company Common Stock") or
     (ii) the combined voting power of the then outstanding voting securities
     of the Company entitled to vote generally in the election of directors
     (the "Outstanding Company Voting Securities"); provided, however that
     for purposes of this subsection (a), the following acquisitions shall
     not constitute a Change of Control:

               (i)    any acquisition directly from the Company,

               (ii)   any acquisition by the Company,

               (iii)  any acquisition by any employee benefit plan (or related
          trust) sponsored or maintained by the Company or any corporation
          controlled by the Company, or

               (iv)   any acquisition by any corporation pursuant to a
          transaction which complies with clauses (i), (ii) and (iii) of
          subsection (c) of this Section 11; or

          (b)  Individuals, who, as of the date hereof, constitute the Board
     (the "Incumbent Board") cease for any reason to constitute at least a
     majority of the Board; provided, however, that any individual becoming a
     director subsequent to the date hereof whose election, or nomination for
     election by the Company's stockholders, was approved


                                     -6-

<PAGE>

     by a vote of at least a majority of the directors then comprising the
     Incumbent Board shall be considered as though such individual was a member
     of the Incumbent Board, but excluding, for this purpose, any such
     individual whose initial assumption of office occurs as a result of an
     actual or threatened election contest with respect to the election or
     removal of directors or other actual or threatened solicitation of proxies
     or consents by or on behalf of a Person other than the Board; or

          (c)  Consummation of a reorganization, merger or consolidation or
     sale or other disposition of all or substantially all of the assets of
     the Company (a "Corporate Transaction") in each case, unless, following
     such Corporate Transaction, (i) all or substantially all of the
     individuals and entities who were the beneficial owners, respectively,
     of the Outstanding Company Common Stock and Outstanding Company Voting
     Securities immediately prior to such Corporate Transaction beneficially
     own, directly or indirectly, more than 60 percent of, respectively, the
     then outstanding shares of common stock and the combined voting power of
     the then outstanding voting securities entitled to vote generally in the
     election of directors, as the case may be, of the corporation resulting
     from such Corporate Transaction (including, without limitation, a
     corporation which as a result of such transaction owns the Company or all
     or substantially all of the Company's assets either directly or through
     one or more subsidiaries) in substantially the same proportions as their
     ownership, immediately prior to such Corporate Transaction of the
     Outstanding Company Common Stock and the Outstanding Company Voting
     Securities, as the case may be, (ii) no Person (excluding any corporation
     resulting from such Corporate Transaction or any employee benefit plan
     (or related trust) of the Company or such corporation resulting from such
     Corporate Transaction) beneficially owns, directly or indirectly, 30
     percent or more of, respectively, the then outstanding shares of common
     stock of the corporation resulting from such Corporate Transaction or the
     combined voting power of the then outstanding voting securities of such
     corporation except to the extent that such ownership existed prior to
     the Corporate Transaction and (iii) at least a majority of the members
     of the board of directors of the corporation resulting from such
     Corporate Transaction were members of the Incumbent Board at the time of
     the execution of the initial agreement, or of the action of the Board,
     providing for such Corporate Transaction; or

          (d)  Approval by the stockholders of the Company of a complete
     liquidation or dissolution of the Company.

     12. EMPLOYMENT OR AFFILIATION OBLIGATION.  The making of a Share Grant
shall not impose upon the Company or any parent or subsidiary corporation any
obligation to employ or continue to employ a Key Employee, and the right of
the Company or any parent or subsidiary corporation to terminate the
employment of any person shall not be diminished or affected by reason of the
fact that a Share Grant has been granted to him.


                                     -7-

<PAGE>

     13. AMENDMENT OR TERMINATION OF PLAN.

     13.1  The Board of Directors, without approval of or notice to the Key
Employees, may modify or amend this Plan at any time it deems advisable;
provided, however, that without stockholder approval the Board of Directors
may not (i) except as permitted in the case of stock splits and other
recapitalizations, materially increase the aggregate number of shares which
may be granted pursuant to the provisions of the Plan; (ii) materially
increase the benefits accruing to the Key Employees under the Plan; or (iii)
materially modify the requirements as to eligibility for participation in the
Plan.

     13.2  The Board of Directors, without approval of or notice to the Key
Employees, may terminate the Plan at any time.

     13.3  Any amendment or termination of the Plan shall not affect shares
already issued or Share Grant Agreements already executed, without the
consent of the Key Employee. In each case where the Board of Directors
determines it to be appropriate or is advised by counsel that such approval
is required, an amendment or termination of the Plan shall be submitted to
the stockholders of the Company for approval.

     14. MISCELLANEOUS PROVISIONS.

     14.1  As a condition to the issuance of shares hereunder, the Company
may require the Key Employee receiving such shares to represent and warrant
at the time of issuance that the shares are being acquired only for
investment and without any present intention to sell or distribute such
shares if, in the opinion of counsel for the Company, such representation is
required under the Securities Act of 1933, or any other applicable law,
regulation or rule of any governmental authority.

     14.2  During the term of the Plan, the Company will at times reserve and
keep available, or have authorized but unissued, such number of shares of
Stock as shall be sufficient to satisfy the requirements of the Plan. The
inability of the Company to obtain from any regulatory body having
jurisdictional authority deemed by the Company's counsel to be necessary to
the lawful issuance of Stock hereunder shall relieve the Company of any
liability in respect of the non-issuance of such Stock as to which such
requisite authority shall not have been obtained.

     14.3  Until the issuance of a stock certificate for Restricted Shares or
Performance Shares, as appropriate, to a Key Employee (as evidenced by the
appropriate entry on the books of the Company or of a duly authorized
transfer agent of the Company), no right to vote or receive cash dividends or
other distributions or any other rights as a stockholder of the Company shall
exist with respect to such Restricted Shares or Performance Shares,
notwithstanding the grant of such shares, the execution of a Share Grant
Agreement, or the occurrence of any event or the passing of any period of
time giving rise to a right in the Key Employee to receive unrestricted
ownership of such shares under the Share Grant Agreement. No adjustment will
be made for any cash dividend or other distribution or other rights for which
the record date is prior to the date the stock certificates representing such
Restricted Shares or Performance Shares are issued, except


                                     -8-

<PAGE>

as otherwise expressly determined by the Committee. The Company shall
endeavor in good faith to issue stock certificates for Restricted Shares or
Performance Shares which are authorized to be issued under the Plan as
promptly as practicable. However, neither the Company, the Committee or any
member thereof, any transfer agent nor any other person shall have any
liability to any Key Employee (or to any person claiming by, through or under
any Key Employee) as the result of any delay in the issuance of any such
certificates, including delays resulting from the negligence or willful
misconduct of any such person or entity.

     14.4  Notwithstanding anything to the contrary contained in this Plan or
any Share Grant Agreement entered into hereunder, any Share Grant made under
this Plan shall be granted subject to the approval of this Plan by the
affirmative vote of the holders of a majority of the Stock of the Company
present or represented and entitled to vote at a meeting duly called and held
for such purpose in accordance with applicable Delaware law. No Share Grant
Agreement entered into under this Plan nor any Share Grant made under this
Plan shall create any obligation in the Company prior to such approval. In
the event that the holders of a majority of the Stock of the Company do not
so approve this Plan, any and all Share Grant Agreements theretofore entered
into shall thereupon terminate and shall be void and of no force and effect
and no Restricted Shares or Performance Shares shall be issued thereunder.

     14.5  Any and all taxes payable with respect to income to a Key Employee
resulting from the grant of Restricted Shares or Performance Shares hereunder
shall be the sole responsibility of the Key Employee, not of the Company,
whether or not the Company shall have withheld or collected from the Key
Employee any sums required to be so withheld or calculated in respect of such
income, and whether or not any sums so withheld or collected shall be
sufficient to provide for any such taxes. The Company or any parent or
subsidiary corporation shall be entitled to deduct from other compensation
payable to each Key Employee any sums required by federal, state or local tax
law to be withheld with respect to the grant of Restricted Shares or
Performance Shares hereunder; but, in the alternative, the Company may
require the Key Employee to pay such sums directly to the employer
corporation. If the Key Employee elects to pay such sums directly, written
notice of that election shall be delivered prior to the ownership
restrictions on such Shares being removed and, whether pursuant to such
election or pursuant to a requirement imposed by the Company, payment in cash
or by check of such sums for taxes shall be delivered within ten days after
the date on which ownership restrictions on such shares are removed. In
addition, any such sums may be satisfied by the Key Employee in shares of
Stock, at the discretion of the Committee, if the Key Employee instructs the
Company in writing at or before the time the ownership restrictions on such
shares are removed to withhold from the shares that number of shares having a
value equal to the amount necessary to satisfy the sums required by federal,
state or local tax law or if the Key Employee delivers to the Company that
number of shares of Stock having a value equal to such amount. The number of
shares required to satisfy such taxes will be calculated based on the fair
market value of the Stock determined in accordance with the procedures
established by the Committee.

     14.6  The Company shall be entitled but shall have no obligation to
cause the shares of Stock issuable hereunder to be registered under the
Securities Act.


                                     -9-

<PAGE>

     15.  INDEMNIFICATION OF THE COMMITTEE AND THE BOARD OF DIRECTORS.  With
respect to administration of the Plan, the Company shall indemnify each
present and future member of the Committee and the Board of Directors
against, and each member of the Committee and the Board of Directors shall be
entitled without further act on his part to indemnity from the Company for,
all expenses (including the amount of judgments and the amount of approved
settlements made with a view to the curtailment of costs of litigation, other
than amounts paid to the Company itself) reasonably incurred by him in
connection with or arising out of any action, suit or proceeding in which he
may be involved by reason of his being or having been a member of the
Committee and the Board of Directors, whether or not he continues to be such
member of the Committee and the Board of Directors at the time of incurring
such expenses; provided, however, that such indemnity shall not include any
expenses incurred by any such member of the Committee and the Board of
Directors (i) in respect of matters as to which he shall be finally adjudged
in any such action, suit or proceeding to have been guilty of gross
negligence or willful misconduct in the performance of his duty as such
member of the Committee and the Board of Directors, or (ii) in respect of any
matter in which any settlement is effected in an amount in excess of the
amount approved by the Company on the advice of its legal counsel; and
provided further, that no right of indemnification under the provisions set
forth herein shall be available to or enforceable by any such member of the
Committee and the Board of Directors unless, within 60 days after institution
of any such action, suit or proceeding, he shall have offered the Company, in
writing, the opportunity to handle and defend same at its own expense. The
foregoing right of indemnification shall inure to the benefit of the heirs,
executors or administrators of each such member of the Committee and the
Board of Directors and shall be in addition to all other rights to which such
member of the Committee and the Board of Directors may be entitled as a
matter of law, contract, or otherwise.

     16. EFFECT OF AMENDMENTS. This Restricted Stock Incentive Plan, as
amended through October 5, 1995, constitutes a complete amendment and
restatement of such Plan. Any Share Grant granted under the Plan shall be
subject to the terms of the Plan as in effect at the time the Share Grant is
granted; provided, however, that by agreement between the Committee and the
Key Employee, any such Share Grant may be amended to incorporate and become
subject to the provisions of the Plan as amended through a date which is
subsequent to the date on which the Share Grant was granted.

     17. EFFECTIVE DATE OF PLAN. The Plan, effective March 18, 1987, is of
perpetual duration.




                                    -10-



<PAGE>

                          D. DALE WOOD
                    STOCK OPTION AGREEMENT


      This Stock Option Agreement dated as of October 5, 1995  is entered
into   by  and  between  Weatherford  Enterra,  Inc.,  a Delaware
corporation  ("Weatherford"), and  D.  Dale  Wood  (the "Optionee").

                          WITNESSETH:

      WHEREAS,  the  Optionee  is  currently  a  consultant to Weatherford
in accordance with the terms of the Consulting Agreement of even date
herewith (the "Consulting Agreement"); and

      WHEREAS, as part of the Optionee's compensation under the
Consulting Agreement, Weatherford has agreed to grant him an
option to purchase up to 84,500 shares of common stock, $.10 par
value, of Weatherford ("Common Stock");

      NOW, THEREFORE, in consideration of the covenants and
agreements herein contained, the parties hereto hereby agree as
follows:

      1.  GRANT OF OPTION. Subject to the terms and conditions
hereinafter set forth, Weatherford hereby grants to the Optionee
the right and option (the "Option") to purchase up to 84,500
shares (after giving effect to the one-for-two reverse stock
split effected on even date herewith) of Common Stock (the
"Shares").  Such number of Shares shall be subject to adjustment
as hereinafter provided. The Option does not constitute an
"incentive stock option" within the meaning of the Internal
Revenue Code of 1986, as amended.

      2.  OPTION PRICE. The option price of the Shares shall be
$25.75 per Share. Such price shall be subject to adjustment as
hereinafter provided.

      3.  EXERCISE OF OPTION. The period during which the Option
is in effect shall be referred to as the "Option Period", which
shall begin on October 5, 1995 (the "Grant Date").  The Option
Period shall terminate at midnight on October 4, 2005 (the
"Expiration Date"). No exercise of the Option may be made prior
to one year after the Grant Date.

      Subject to the provisions of the preceding paragraph
and Section 10 of this Agreement, the Option shall be exercisable
as follows:

      On or after
      October 5, 1996   20% of the Shares can be purchased
                        by the Optionee.

      On or after
      October 5, 1997   20% of the Shares can be purchased
                        by the Optionee, plus any Shares
                        that could have been purchased
                        previously but were not.

                                    -1-

<PAGE>

      On or after
      October 5, 1998   20% of the Shares can be purchased
                        by the Optionee, plus any Shares
                        that could have been purchased
                        previously but were not.

      On or after
      October 5, 1999   20% of the Shares can be purchased
                        by the Optionee, plus any Shares
                        that could have been purchased
                        previously but were not.

     On or after
     October 5, 2000   All Shares not previously purchased
                       can be purchased by the Optionee.

      If the Optionee wishes to exercise the Option, the
Optionee will deliver a written, signed notice to the Corporate
Secretary of Weatherford setting forth the number of Shares with
respect to which the Option is being exercised and the address to
which the certificates representing such Shares should be mailed.
To be effective, such written notice shall be accompanied, at the
time of its delivery to the Corporate Secretary, by payment of
the option price of such Shares, which payment shall be made by
check, payable to the order of Weatherford in an amount, in
United States dollars, equal to the option price of such Shares.
Alternatively, subject to the provisions of Rule 16b-3 of the
Securities Exchange Act of 1934, payment of the option price may
be made by the Optionee's delivering to the Corporate Secretary
such written, signed exercise notice together with irrevocable
instructions to a broker to promptly deliver to Weatherford an
amount equal to the option price of such Shares, such amount
being either from loan proceeds or from the sale of the Shares to
be issued to the Optionee.

      If, in the opinion of counsel for Weatherford, any law
or regulation requires Weatherford to take such action with
respect to the Shares specified in such notice, then the date of
the delivery of such Shares and payment therefor shall be
extended for the period necessary to take such action.

      4.  LIMITATION OF RIGHTS OF THE OPTIONEE.  The Optionee
shall have no rights with respect to any Shares not expressly
conferred by this Agreement.

      5.  NO ASSIGNMENT. This Agreement and the Option granted
hereunder are of a personal nature and the Optionee's rights with
respect thereto may not be sold, mortgaged, pledged, assigned,
hypothecated, transferred, conveyed or disposed of in any manner
by the Optionee, and shall not be exercisable by any person,
other than the Optionee, except as expressly permitted hereby.
Any  such  attempted  sale, mortgage,  pledge,  assignment,
hypothecation, transfer, conveyance, disposition or exercise
shall be void and Weatherford shall not be bound thereby.

       Notwithstanding the above and subject to the provisions
of Section 10 of this Agreement, the Option granted hereunder may
be transferred by will or the laws of descent and distribution.
In addition, the Optionee may transfer the Option granted
hereunder to his children,

                                    -2-

<PAGE>

grandchildren or spouse or to one or more trusts for the
benefit of such family members or to partnerships in which
such family members are the only partners (a "Family Transfer"),
provided that the Optionee receives no consideration for a Family
Transfer and that the option documents relating to the Family Transfer
provide for the same terms and conditions that are applicable to the
Option.

      6.  SUCCESSORS. This Agreement shall be binding upon any
successors of Weatherford and the heirs, successors and legal
representatives of the Optionee.

      7.  RESTRICTIONS ON TRANSFER; COMPLIANCE WITH  THE
SECURITIES ACT.

      A.  Weatherford shall use reasonable efforts to
register for sale under the Securities Act of 1933  (the
"Securities  Act") the Shares represented by this  Option.
Weatherford shall not be obligated to issue any shares of Common
Stock pursuant to this Option at any time when the Shares have
not been registered under the Securities Act, notwithstanding
Weatherford's efforts to do so, and such other state and federal
laws, rules or regulations as Weatherford deems applicable and,
in the opinion of legal counsel for Weatherford, there is no
exemption from the registration requirements of such laws, rules
or regulations available for the issuance and sale of such
Shares.  If the Shares are not registered for sale under the
Securities Act, Weatherford shall use reasonable efforts to cause
the issuance of any Shares pursuant to this Option to qualify for
an exemption from such laws, rules or regulations, if any
exemption is available. If such an exemption is available, the
Optionee (or the person permitted to exercise this Option under
Section 5 or 10 of this Agreement), if requested by Weatherford
to do so, will execute and deliver to Weatherford in writing an
agreement containing such provisions as Weatherford may require
to assure compliance with such exemption and such laws, rules or
regulations.

      B.  The Shares shall not be transferable except upon
the conditions specified in this Section 7, which conditions are
intended, among other things, to ensure compliance with the
provisions of the Securities Act in respect of the transfer of
the Shares.

      C.  If the Shares are not registered for sale under
the Securities Act, the Optionee by acceptance hereof agrees that
prior to the transfer or attempted transfer of the Shares, he, or
his  successor in interest, will give written  notice  to
Weatherford of his intention to effect such transfer. Each such
notice shall (i) describe the manner and circumstances of the
proposed  transfer in sufficient detail, (ii)  contain  an
undertaking by the person giving such notice to furnish such
other information as may be required to enable counsel to render
the opinions referred to below and (iii) designate the counsel
for the person giving such notice. The person giving such notice
shall submit a copy thereof to the counsel designated in such
notice and Weatherford shall submit a copy thereof to its
counsel.

        (1)  If in the opinion of each such counsel the
   proposed  transfer of the Shares may be effected  without
   registration under the Securities Act of the Shares, Weatherford
   shall, as promptly as practicable, so notify the Optionee, and he
   shall thereupon be entitled to transfer the Shares in accordance
   with the terms of the notice delivered by such holder to
   Weatherford.

                                    -3-

<PAGE>

        (2)  If in the opinion of either of such counsel
   the proposed transfer of the Shares may not be effected without
   registration under the Securities Act of the Shares, Weatherford
   shall, as promptly as practicable, so notify the Optionee, and
   Weatherford shall not be obligated to effect such transfer of the
   Shares.

      D.  If the Shares are not registered for sale under
the Securities Act, each certificate for Shares issued upon
exercise of this Option shall bear a legend to the effect that
the Shares may not be transferred except upon compliance with the
provisions of this Section 7, and each certificate for Shares
transferred pursuant to Subsection C(1) of this Section 7 shall
also bear such a legend unless, in the opinion of counsel for
Weatherford, a legend is not required. The legend shall read in
the form substantially as follows:

        "The shares of stock represented by this certificate
     shall have not been registered under the Securities Act of 1933
     or under the securities laws of any State and may not be sold or
     transferred except upon such registration or upon receipt by
     Weatherford Enterra, Inc. of an opinion of counsel satisfactory
     to  Weatherford,  in  form and substance  satisfactory  to
     Weatherford, that registration is not required for such sale or
     transfer."

      E.  The Optionee hereby covenants and agrees with
Weatherford as follows:

        (1)  The Optionee acknowledges that the Shares
   must be held by him indefinitely unless the Shares are registered
   for sale by him under the Securities Act or an exemption from
   such registration is available. He understands that any sale of
   the Shares made in reliance upon Rule 144 under the Securities
   Act may be made only in limited amounts after the expiration of
   two years from the date of receipt of the Shares and otherwise in
   accordance with the terms and conditions of such Rule.

        (2)  Weatherford may instruct its transfer agent
   not to transfer any of the Shares unless such agent has been
   advised by Weatherford or otherwise has been satisfied that the
   Optionee has complied with the provisions described above.

   8.  CHANGES IN WEATHERFORD'S CAPITAL STRUCTURE.  This
Option shall not affect in any way the right or power of
Weatherford or its stockholders to make or authorize any or all
adjustments, recapitalizations, reorganizations or other changes
in Weatherford's capital structure or its business, or any merger
or  consolidation of Weatherford, or any issue of  bonds,
debentures, preferred or prior preference stock ahead of or
affecting the Common Stock or the rights thereof, or the
dissolution or liquidation of Weatherford, or any sale, transfer,
lease, exchange or other disposition of all or any part of its
assets or business, or any corporate act or proceeding, whether
of a similar character or otherwise.

      If  Weatherford shall effect a  subdivision  or
consolidation of shares of Common Stock or the payment of a stock
dividend on the Common Stock outstanding, without receiving
compensation therefor in money, services or property, or if
Weatherford recapitalizes or otherwise changes its  capital
structure, then

                                    -4-

<PAGE>

      (A)  The number, class and per share price of the
   Shares shall be appropriately adjusted in such a manner as to
   entitle the Optionee to receive upon exercise of this Option, for
   the same aggregate cash consideration, the same total number and
   class of shares as he would have received had he exercised this
   Option in full immediately prior to the event requiring the
   adjustment; and

      (B) The number and class of shares then reserved for
   issuance  pursuant to this Option shall  be  adjusted  by
   substituting for the total number and class of shares of Common
   Stock then reserved that number and class of shares of stock that
   would have been received by the owner of an equal number of
   outstanding shares of Common Stock as a result of the event
   requiring the adjustment.

   9.  OTHER ISSUANCES.  Except as hereinbefore expressly
provided, the issue by Weatherford of shares of stock of any
class, or securities convertible into shares of stock of any
class, for cash, property, labor or services, upon direct sale,
upon the exercise of rights or warrants to subscribe therefor, or
upon  conversion of shares or obligations  of  Weatherford
convertible into such shares or other securities, and in any case
whether or not for fair value, shall not affect, and no
adjustment by reason thereof shall be made with respect to, the
number or price of Shares subject to this Option.

   10. LIMITATIONS ON EXERCISABILITY; DEATH OF OPTIONEE.  In
the event of the termination of the Consulting Agreement pursuant
to subsection (i), (iii) or (iv) of Section 2(b) thereof before
October 5, 2000, this Option shall thereafter be exercisable only
with respect to such number of Shares that could be purchased by
the Optionee immediately prior to such termination.  After the
death of the Optionee, his executors, administrators or any other
person or persons to whom this Option may be transferred by will
or by the laws of descent and distribution, shall have the right,
at any time prior to the Expiration Date, to exercise this
Option, in whole or in part, in accordance with the terms hereof.

   11. NOTICES. Every notice or other communication relating
to this Option shall be in writing and shall be mailed to or
delivered to the party for whom it is intended at such address as
may from time to time be designated by it in a notice mailed or
delivered to the other party as herein provided; provided that,
unless and until some other address be so designated, all notices
or  communication by the Optionee to Weatherford shall be
addressed to the Corporate Secretary of Weatherford and mailed or
delivered to Weatherford at its office at the following address:

          Weatherford Enterra, Inc.
          1360 Post Oak Boulevard
          Suite 1000
          Houston, Texas 77056-3098

All notices or communications by Weatherford to the Optionee may
be given to the Optionee personally or may be mailed to him at
the following address:

                                    -5-

<PAGE>

          D. Dale Wood
          6846 Oakwood Trace Ct.
          Houston, Texas 77040

   12.  AMENDMENT. This Agreement may be amended, modified,
superseded or canceled only by a written instrument executed by
both parties hereto.

   13. GOVERNING LAW. THIS AGREEMENT SHALL BE GOVERNED BY AND
CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF TEXAS
WITHOUT GIVING EFFECT TO CONFLICTS OF LAW PROVISIONS.

   IN WITNESS WHEREOF, the parties hereto have executed this
Agreement on the day and year first above written.


                    WEATHERFORD ENTERRA, INC.



                     By:     /s/ Philip Burguieres
                             ----------------------------
                     Name:   Philip Burguieres
                     Title:  Chairman, President and
                             Chief Executive Officer



                     Optionee



                     /s/ D. Dale Wood
                     ------------------------------------
                     D. DALE WOOD

                                    -6-



<PAGE>



                                                                   Exhibit 4.6




                              SEVERANCE AGREEMENT


            Agreement made as of February 20, 1992 between Enterra Corporation,
a Delaware corporation (the "Company"), and M. Timothy Carey (the "Employee").

            WHEREAS, the Employee has previously been employed as Executive Vice
President of CRC-Evans Pipeline International, Inc., a "Subsidiary" (as defined
in Section 1 hereof); and

            WHEREAS, as of the date of this Agreement the Employee shall become
employed by the Company as President of the Oilfield Services and Equipment
Group of the Company;

            WHEREAS, the Company considers it essential to foster the employment
of well qualified key management personnel for the Company and its Subsidiaries,
and, in this regard, the board of directors of the Company recognizes that, as
is the case with many publicly held corporations, the possibility of a change in
control of the Company may exist and that such possibility, and the uncertainty
and questions which it may raise among management, may result in the departure
or distraction of key management personnel to the detriment of the Company and
its Subsidiaries;

            WHEREAS, the board of directors of the Company has determined that
appropriate steps should be taken to reinforce and encourage the continued
attention and dedication of key members of the management of the Company and its
Subsidiaries to their assigned duties without distraction in the face of
potentially disturbing circumstances arising from the possibility of a change in
control of the Company, although no such change is now contemplated; and

            WHEREAS, in order to induce the Employee to remain in the employ of
the Company, the Company agrees that the Employee shall receive the compensation
and benefits set forth in this Agreement in the event his employment with such
Subsidiary is terminated subsequent to a "Change of Control" (as defined in
Section l hereof) of the Company as a cushion against the financial and career
impact on the Employee of any such Change of Control;

            NOW, THEREFORE, in consideration of the foregoing and the mutual
covenants and agreements hereinafter set forth and intending to be legally bound
hereby, the parties hereto agree as follows:

            1.  DEFINITIONS.  For all purposes of this Agreement, the
following terms shall have the meanings specified in this Section unless the
context clearly otherwise requires:



<PAGE>



            (a)   "Affiliate" and "Associate" shall have the respective meanings
ascribed to such terms in Rule 12b-2 of the General Rules and Regulations under
the Securities Exchange Act of 1934, as amended (the "Exchange Act").

            (b)   "Base Salary" shall mean the total cash remuneration earned by
the Employee on an annualized basis in all capacities with the Company and its
Subsidiaries, including any compensation the payment of which has been deferred
pursuant to a salary reduction or deferral plan (including a 401(k) plan, other
than company matching contributions) or agreement, but exclusive of any cash
payments made to him under the Company's Bonus Plan, or any contributions made
for his benefit to the Company's 401(k) Plan or CRC-Evans Plan.

            (c)   A Person shall be deemed the "Beneficial Owner" of any
securities:

                  (i)   that such Person or any of such Person's Affiliates or
            Associates, directly or indirectly, has the right to acquire
            (whether such right is exercisable immediately or only after the
            passage of time) pursuant to any agreement, arrangement or
            understanding (whether or not in writing) or upon the exercise of
            conversion rights, exchange rights, rights, warrants or options, or
            otherwise; PROVIDED, HOWEVER, that a Person shall not be deemed
            the "Beneficial Owner" of securities tendered pursuant to a tender
            or exchange offer made by such Person or any of such Person's
            Affiliates or Associates until such tendered securities are accepted
            for payment, purchase or exchange;

                  (ii)  that such Person or any of such Person's Affiliates or
            Associates, directly or indirectly, has the right to vote or dispose
            of or has "beneficial ownership" of (as determined pursuant to Rule
            13d-3 of the General Rules and Regulations under the Exchange Act),
            including without limitation pursuant to any agreement, arrangement
            or understanding, whether or not in writing; PROVIDED, HOWEVER,
            that a Person shall not be deemed the "Beneficial Owner" of any
            security under this subsection (ii) as a result of an oral or
            written agreement, arrangement or understanding to vote such
            security if such agreement, arrangement or understanding (A) arises
            solely from a revocable proxy given in response to a public proxy or
            consent solicitation made pursuant to, and in accordance with, the
            applicable provisions of the General Rules and Regulations under the
            Exchange Act, and (B) is not then reportable by such Person on
            Schedule 13D under the Exchange Act (or any comparable or successor
            report); or


                                       2



<PAGE>



                  (iii) that are beneficially owned, directly or indirectly, by
            any other Person (or any Affiliate or Associate thereof) with which
            such Person (or any of such Person's Affiliates or Associates) has
            any agreement, arrangement or understanding (whether or not in
            writing) for the purpose of acquiring, holding, voting (except,
            pursuant to a revocable proxy as described in the proviso to
            subsection (ii) above) or disposing of any voting securities of the
            Company;

PROVIDED, HOWEVER, that nothing in this Section 1(c) shall cause a Person
engaged in business as an underwriter of securities to be the "Beneficial Owner"
of any securities acquired through such Person's participation in good faith in
a firm commitment underwriting until the expiration of forty days after the date
of such acquisition.

            (d)   "Board" shall mean the board of directors of the Company.

            (e)   "Bonus Plan" shall mean the Company's Management Incentive
Bonus Plan, as in effect immediately prior to a Change of Control.

            (f)   "Change of Control" shall be deemed to have taken place if (i)
any Person (except the Company, any Subsidiary of the Company, any employee
benefit plan of the Company or of any Subsidiary of the Company, any Person or
entity organized, appointed or established by the Company for or pursuant to the
terms of any such employee benefit plan, or an Exempted Person), together with
all Affiliates and Associates of such Person acting in concert as described in
Section 14(d)(2) of the Exchange Act, shall become the Beneficial Owner in the
aggregate of 30% or more of the Common Stock of the Company then outstanding
within the meaning of Rule 13d-3 promulgated under the Exchange Act.

            (g)   "CRC-Evans Plan" shall mean the CRC-Evans Money Purchase
Pension Plan, as in effect immediately prior to a Change of Control.

            (h)   "Exempted Person" shall mean any of Shamrock Holdings of
California, Inc., a Delaware corporation ("Shamrock"), Shamrock Holdings, Inc.,
a Delaware corporation ("Shamrock Holdings"), or any Affiliate or Associate of
Shamrock or Shamrock Holdings.  "Exempted Person" shall not include transferees
from any Exempted Person except where such transferees are Affiliates or
Associates of Shamrock or Shamrock Holdings.

            (i)   "401(k) Plan" shall mean the Company's 401(k) Plan, as in
effect immediately prior to a Change of Control.


                                         3



<PAGE>



            (j)   "Normal Retirement Date" shall mean the first day of the
calendar month coincident with or next following the Employee's 65th birthday.

            (k)   "Person" shall mean any individual, firm, corporation,
partnership or other entity.

            (l)   "Stock Plan" shall mean the Company's Stock Option Plan or any
successor plan thereto, as in effect immediately prior to a Change of Control.

            (m)   "Subsidiary" shall have the meaning ascribed to such term in
Rule 12b-2 of the General Rules and Regulations under the Exchange Act.

            (n)   "Termination Date" shall mean the date of receipt of the
Notice of Termination described in Section 2 hereof or any later date specified
therein, as the case may be.

            (o)   "Termination of Employment" shall mean the termination of the
Employee's actual employment relationship with the Company.

            (p)   "Termination upon a Change of Control" shall mean a
Termination of Employment upon or within two years after a Change of Control
either:

                  (i)   initiated by the Company or any Subsidiary for any
            reason other than (x) the Employee's continuous illness, injury or
            incapacity for a period of twenty-six consecutive weeks, (y) for
            "cause," as defined in Section 8.3 of the Employment Agreement (as
            assigned and amended), dated as of February l, 1988, among the
            Company, CRC-Evans Pipeline International, Inc. and the Employee
            (the "Employment Agreement") , or (z) by reason of the occurrence of
            the Normal Retirement Date; or

                  (ii)  initiated by the Employee following one or more of the
            following occurrences:

                        (A)   a significant reduction by the Company or its
                  Subsidiaries of the authority, duties or responsibilities of
                  the Employee immediately prior to the Change of Control;

                        (B)   any removal of the Employee from or any failure to
                  re-elect the Employee to the officer positions with the
                  Company and its Subsidiaries held by him immediately prior to
                  the Change of Control, except in connection with promotions to
                  higher office or in connection with consolidations among the
                  Company's Subsidiaries where the


                                       4



<PAGE>



                  Employee is elected to similar positions in the successor
                  company or companies;

                        (C)   a reduction by the Company in the Employee's Base
                  Salary as in effect immediately prior to the Change of
                  Control;

                        (D)   revocation or any modification (except as may be
                  required in the normal course of business in light of any
                  requirement of or change in federal law or regulations) of the
                  Bonus Plan, 401(k) Plan or CRC-Evans Plan, or any action taken
                  pursuant to the terms of such plans, which materially (x)
                  reduces the opportunity to receive compensation under any of
                  such plans of equivalent amounts received by the Employee
                  during the two fiscal years immediately preceding the Change
                  of Control, subject to the right of the Board to establish in
                  a manner consistent with past practice prior to the Change of
                  Control reasonable goals under such plans, (y) reduces the
                  compensation payable to the Employee under any of such plans
                  but which does not effect comparable reductions in the
                  compensation payable to the other participants in such plans,
                  or (z) increases the compensation payable to other
                  participants in any of such plans but which does not effect
                  corresponding increases in the amount of compensation payable
                  to the Employee; or

                        (E)   a transfer of the Employee, without his express
                  written consent, to a location which is outside the general
                  metropolitan area in which his principal place of business
                  immediately preceding the Change of Control may be located, or
                  which is otherwise an unreasonable commuting distance from the
                  Employee's principal residence at the date of the Change of
                  Control.

            2.  NOTICE OF TERMINATION.  Any Termination upon a Change of
Control shall be communicated by a Notice of Termination to the other party
hereto given in accordance with Section 14 hereof.  For purposes of this
Agreement, a "Notice of Termination" means a written notice which (i) indicates
the specific termination provision in this Agreement relied upon, (ii) briefly
summarizes the facts and circumstances deemed to provide a basis for termination
of the Employee's employment under the provision so indicated, and (iii) if the
termination date is other than the date of receipt of such notice, specifies the
termination date (which date shall not be more than 15 days after the giving of
such notice).


                                       5


<PAGE>



            3.    SEVERANCE COMPENSATION UPON TERMINATION.

            (a)   Subject to the provisions of Section 10 hereof and to
adjustment as provided in paragraph (b) below and Section 9(a), in the event of
the Employee's Termination upon a Change of Control, the Company shall pay to
the Employee, within fifteen days after the Termination Date (or as soon as
possible thereafter in the event that the procedures set forth in Section 10(b)
hereof cannot be completed within 15 days), an amount in cash equal to two times
the sum of paragraphs (i) and (ii) below:

                  (i)    The Employee's Base Salary in effect either immediately
            prior to the Termination of Employment or immediately prior to the
            Change of Control, whichever is higher; and

                  (ii)   The average of the annual bonuses earned by the
            Employee under the Bonus Plan in the two fiscal years immediately
            prior to such Termination of Employment.

            (b)   In the event the Employee's Normal Retirement Date would occur
prior to twenty-four months after the Termination Date, the aggregate cash
amount determined as set forth in (a) above shall be reduced by multiplying it
by a fraction, the numerator of which shall be the number of days from the
Termination Date to the Employee's Normal Retirement Date and the denominator of
which shall be 730.  No payments shall be due Employee in the event that the
Normal Retirement Date has been reached prior to the Termination Date.

            4.    OTHER PAYMENTS.  Subject to the provisions of Section 10
hereof, in the event of the Employee's Termination upon a Change of Control, the
Company shall:

            (a)   pay to the Employee within fifteen days after the Termination
Date, unless the Employee has exercised such options and rights, an amount equal
to the excess, if any, of the aggregate fair market value of the shares of the
Company's Common Stock subject to all stock options and stock appreciation
rights outstanding and unexercised immediately prior to the Termination Date,
whether vested or unvested, granted to the Employee under the Stock Plan, over
the aggregate exercise price of all such stock options.  For purposes of this
paragraph, fair market value shall mean the highest of (x) the closing price of
the Company's Common Stock on the business day immediately preceding the
Termination Date, if such Common Stock is publicly traded at such date, (y) if
such Common Stock is not publicly traded at the Termination Date, the value
determined by an independent appraiser, such appraiser to be selected by the
Employee and to be reasonably satisfactory to the Company (the fees and expenses
of such appraiser to be borne by the Company), or (z) the highest


                                       6



<PAGE>



per share price of the Company's Common Stock paid (in connection with the
Change of Control or at any time thereafter) by the Person or group whose
acquisition of shares of Common Stock of the Company has given rise to a Change
of Control;

             (b)  to the extent permitted by applicable law, continue or cause
to be continued until 24 months after the Termination Date, on the cost-sharing
basis (if any) in effect immediately prior to the Change of Control, medical,
dental and life insurance benefits (and, at the option of the Employee,
disability insurance benefits) substantially equivalent in all material respects
to those furnished by the Company and its Subsidiaries to the Employee
immediately prior to the Change of Control; PROVIDED, HOWEVER, that if the
Employee's Normal Retirement Date would have occurred prior to 24 months after
the Termination Date, the obligation of the Company to provide such benefits
shall cease at the Employee's Normal Retirement Date; and PROVIDED FURTHER,
HOWEVER, that the obligation of the Company to provide such benefits shall
cease at such time as the Employee is employed on a full time basis by a
corporation not owned or controlled by the Employee that provides the Employee,
on substantially the same cost-sharing basis (if any) between the Company and
the Employee in effect immediately prior to the Change of Control, with medical,
dental, life and disability insurance benefits substantially equivalent in all
material respects to those furnished by the Company and its Subsidiaries to the
Employee immediately prior to the Change of Control;

             (c)  for vesting purposes only, in the event of a Termination upon
a Change of Control occurring prior to the Normal Retirement Date, credit the
Employee with the lesser of (i) two additional "years of service" (as defined in
the Company's 401(k) Plan) or (ii) the period of time from the Termination Date
to the Normal Retirement Date under each of the Company's 401(k) Plan and
CRC-Evans Plan, in addition to the years of service that would have otherwise
been calculated by reference solely to the Termination Date, it being understood
that benefits in respect of the two additional years of service shall to the
extent permitted by applicable law be paid to the Employee under the Company's
401(k) Plan or CRC-Evans Plan, and that the Company shall, to the extent
necessary to provide the Employee the additional benefits intended hereby, amend
the 401(k) Plan or CRC-Evans Plan or pay such additional benefits outside the
plan as may be necessary; and

             (d)  permit the Employee to continue the use of his Company car, if
any, without any cost for a period of six months thereafter.  Thereafter, the
Employee shall return the car to the Company unless, in the case of a car owned
by the Company, the Employee elects to purchase the car from the Company at the
net book value thereof at the date of the purchase or, in the case of a car
leased by the Company, the Employee pays the Company, as


                                         7



<PAGE>



such amounts become due and payable, all rental payments charged to the Company
for the use of such car for the remainder of the lease therefore.

            5.    VESTING AND ACCELERATION OF CERTAIN BENEFITS.  In the event of
a Termination upon a Change of Control, and subject to the provisions of Section
10 hereof, all restrictions remaining on the Termination Date on the restricted
shares, if any, received by the Employee, pursuant to the Stock Plan shall
lapse, and said shares shall thereupon be owned by the Employee free and clear
of all restrictions of any nature whatsoever, except those, if any, under
applicable federal and state securities laws.

            6.    ENFORCEMENT.

            (a)   In the event that the Company shall fail or refuse to make
payment of any amounts due the Employee under Sections 3, 4 and 5 hereof within
the respective time periods provided therein, the Company shall pay to the
Employee, in addition to the payment of any other sums provided in this
Agreement, interest, compounded daily, on any amount remaining unpaid from the
date payment is required under Section 3, 4 or 5, as appropriate, until paid to
the Employee, at the rate from time to time announced by Wells Fargo Bank, N.A.
as its "prime rate" plus 2%, each change in such rate to take effect on the
effective date of the change in such prime rate.

            (b)   It is the intent of the parties that the Employee not be
required to incur any expenses associated with the enforcement of his rights
under this Agreement by arbitration, litigation or other legal action because
the cost and expense thereof would substantially detract from the benefits
intended to be extended to the Employee hereunder.  Accordingly, the Company
shall pay the Employee on demand the amount necessary to reimburse the Employee
in full for all expenses (including all attorneys' fees and legal expenses)
incurred by the Employee in enforcing any of the obligations of the Company
under this Agreement.

            7.    NO MITIGATION. The Employee shall not be required to
mitigate the amount of any payment or benefit provided for in this Agreement by
seeking other employment or otherwise.

            8.    NON-EXCLUSIVITY OF RIGHTS.  Nothing in this Agreement shall
prevent or limit the Employee's continuing or future participation in or rights
under any benefit, bonus, incentive or other plan or program provided by the
Company or any of its Subsidiaries or Affiliates and for which the Employee may
qualify.


                                         8



<PAGE>



             9.   COORDINATION OF BENEFITS; NO SET-OFF; TAXES.

             (a)  The Employment Agreement, the severance plan or policy, if
any, applicable to employees of the Company or the Subsidiary which employs the
Employee, and any other severance payments required by applicable statutes or
provided under government programs may provide compensation and benefits to
Employee upon events which also constitute a Termination upon a Change of
Control as defined in this Agreement.  In such event, Employee shall be entitled
only to the largest cash compensation provided for under any of such agreements,
plans, policies, statutes or programs and the maximum benefit continuance
provided for under any of such agreements, plans, policies, statutes or
programs, and the payments referred to in Section 3 hereof shall be reduced to
the extent necessary to effect such coordination of benefits.

             (b)  Except as specifically set forth in (a) above, the Company's
obligation to make the payments provided for in this Agreement and otherwise to
perform its obligations hereunder shall not be affected by any circumstances,
including, without limitation, any set-off, counterclaim, recoupment, defense or
other right which the Company may have against the Employee or others.

             (c)  Employee alone, and not the Company or any Subsidiary, shall
be responsible for the payment of all federal, state and local taxes in respect
of the payments to be made and benefits to be provided under this Agreement.

             10.  CERTAIN REDUCTION OF PAYMENTS.

             (a)  Anything in this Agreement to the contrary notwithstanding, in
the event that it shall be determined as set forth herein that any payment or
distribution by the Company to or for the benefit of the Employee, whether paid
or payable or distributed or distributable pursuant to the terms of this
Agreement or otherwise (a "Payment"), would constitute an "excess parachute
payment" within the meaning of Section 280G of the Internal Revenue Code of
1986, as amended (the "Code"), and that it would be economically advantageous to
the Company to reduce the Payment to avoid or reduce the taxation of excess
parachute payments under Section 4999 of the Code, the aggregate present value
of amounts payable or distributable to or for the benefit of the Employee
pursuant to this Agreement (such payments or distributions pursuant to this
Agreement are hereinafter referred to as "Agreement Payments") shall be reduced
(but not below zero) to the Reduced Amount.  The "Reduced Amount" shall be an
amount expressed in present value which maximizes the aggregate present value of
Agreement Payments without causing any Payment to be subject to the taxation
under Section 4999 of the Code.  For


                                           9



<PAGE>



purposes of this Section 10, present value shall be determined in accordance
with Section 280G(d) (4) of the Code.

             (b)  All determinations to be made under this Section 10 shall be
made by KPMG Peat Marwick, or the Company's independent public accountant
immediately prior to the Change of Control if other than KPMG Peat Marwick (the
"Accounting Firm"), which firm shall use its best efforts to provide its
determinations and any supporting calculations both to the Company and the
Employee within 10 days of the Termination Date. Any such determination by the
Accounting Firm shall be binding upon the Company and the Employee.  The Company
shall in its sole discretion determine which and how much of the Agreement
Payments shall be eliminated or reduced consistent with the requirements of this
Section 10.  Within five days after the Company's determination, the Company
shall pay (or cause to be paid) or distribute (or cause to be distributed) to or
for the benefit of the Employee such amounts as are then due to the Employee
under this Agreement.

             (c)  As a result of the uncertainty in the application of Section
280G of the Code at the time of the initial determination by the Accounting Firm
hereunder, it is possible that Agreement Payments, as the case may be, will have
been made by the Company which should not have been made ("Overpayment") or that
additional Agreement Payments which have not been made by the Company could have
been made ("Underpayment"), in each case, consistent with the calculations
required to be made hereunder. Within two years after the Termination of
Employment, the Accounting Firm shall review the determination made by it
pursuant to the preceding paragraph.  In the event that the Accounting Firm
determines that an Overpayment has been made, any such Overpayment shall be
treated for all purposes as a loan to the Employee which the Employee shall
repay to the Company together with interest at the applicable Federal rate
provided for in Section 7872(f) (2) of the Code (the "Federal Rate"); PROVIDED,
HOWEVER, that no amount shall be payable by the Employee to the Company if and
to the extent such payment would not reduce the amount which is subject to
taxation under Section 4999 of the Code.  In the event that the Accounting Firm
determines that an Underpayment has occurred, any such Underpayment shall be
promptly paid by the Company to or for the benefit of the Employee together with
interest at the Federal Rate.

             (d)  All of the fees and expenses of the Accounting Firm in
performing the determinations referred to in subsections (b) and (c) above shall
be borne solely by the Company.  The Company agrees to indemnify and hold
harmless the Accounting Firm of and from any and all claims, damages and
expenses of any nature resulting from or relating to its determinations pursuant
to subsections (b) and (c) above, except for claims, damages or


                                          10



<PAGE>



expenses resulting from the gross negligence or willful misconduct of the
Accounting Firm.

             11.  SETTLEMENT OF ALL DISPUTES.

             (a)  Any dispute, controversy or claim arising out of or relating
to any provision of this Agreement or the Employee's Termination upon a Change
of Control shall be settled by arbitration in the City of Houston, Texas, in
accordance with the commercial arbitration rules then in effect of the American
Arbitration Association, before a panel of three arbitrators, two of whom shall
be selected by the Company and the Employee, respectively, and the third of whom
shall be selected by the other two arbitrators.  Each arbitrator selected as
provided herein is required to be or have been a director or an executive
officer of a corporation whose shares of common stock were listed during at
least one year of such service on the New York Stock Exchange or the American
Stock Exchange or quoted on the National Association of Securities Dealers
Automated Quotations System. Any award entered by the arbitrators shall be
final, binding and nonappealable and judgment may be entered thereon by any
party in accordance with applicable law in any court of competent
jurisdiction.  This arbitration provision shall be specifically
enforceable.  The fees of the American Arbitration Association and the
arbitrators and any expenses relating to the conduct of the arbitration shall be
paid by the Company.

             (b)  The party or parties challenging the right of the Employee to
the benefits of this Agreement shall in all circumstances have the burden of
proof.

             12.  TERM OF AGREEMENT.  This Agreement shall commence as of the
date first written above and shall continue in effect until the earlier of (i)
the date upon which the Employee ceases to be in the employ of the Company or
any Subsidiary thereof for any reason other than a Termination upon a Change of
Control, or (ii) 24 months after a Change of Control has occurred, PROVIDED,
HOWEVER, that all of the obligations of the parties hereunder arising after a
Change of Control shall continue in effect until such obligations are satisfied
or have expired.

             13.  SUCCESSOR COMPANY.  The Company shall require any successor
or successors (whether direct or indirect, by purchase, merger, consolidation or
otherwise) to all or substantially all of the business and/or assets of the
Company, by agreement in form and substance satisfactory to the Employee, to
acknowledge expressly that this Agreement is binding upon and enforceable
against the Company in accordance with the terms hereof, and to become jointly
and severally obligated with the Company to perform this Agreement in the same
manner and to the same extent that the Company would be required to perform if
no such succession or successions had taken place.  Failure of the


                                          11



<PAGE>



Company to obtain such agreement prior to the effectiveness of any such
succession shall be a breach of this Agreement.  As used in this Agreement, the
Company shall mean the Company as hereinbefore defined and any such successor or
successors to its business and/or assets, jointly and severally.

             14.  NOTICE.  All notices and other communications required or
permitted hereunder or necessary or convenient in connection herewith shall be
in writing and shall be delivered personally or mailed by registered or
certified mail, return receipt requested, or by overnight express courier
service, as follows:

            If to the Company, to:

                  Enterra Corporation
                  13100 Northwest Freeway
                  Sixth Floor
                  Houston, TX   77040
                  Attention:  Chief Executive Officer

            With a required copy to:

                  Morgan, Lewis & Bockius
                  2000 One Logan Square
                  Philadelphia, PA 19103-6993
                  Attention:  David R. King, Esq.

            If to the Employee, to:

                  M. Timothy Carey
                  14111 Indian Wells
                  Houston, TX 77069

            With a required copy to:

                  Wilshire, Scott & Dyer
                  4450 First City Tower
                  Houston, TX  77002
                  Attention:  Gene Wilshire, Esq.

or to such other names or addresses as the Company or the Employee, as the case
may be, shall designate by notice to the other party hereto in the manner
specified in this Section.  Any such notice shall be deemed delivered and
effective when received in the case of personal delivery, five days after
deposit, postage prepaid, with the U.S. Postal Service in the case of registered
or certified mail, or on the next business day in the case of overnight express
courier service.

            15.   GOVERNING LAW.  THIS AGREEMENT SHALL BE GOVERNED BY AND
INTERPRETED UNDER THE LAWS OF THE STATE OF DELAWARE


                                        12



<PAGE>



WITHOUT GIVING EFFECT TO SUCH STATE'S CONFLICT OF LAWS
PROVISIONS.

             16.  CONTENTS OF AGREEMENT, AMENDMENT AND ASSIGNMENT.

             (a)  This Agreement is intended to be in addition to the provisions
of the Employment Agreement; provided, however, that in the event of a
Termination upon a Change of Control, (i) Sections 5 and 6 of the Employment
Agreement, and (ii) any similar provisions contained in any agreements then in
effect entered into by Employee with CRC-Evans Pipeline International, Inc., a
Texas corporation, or its predecessor by merger, shall terminate and be of no
further force and effect.  Subject to the foregoing, this Agreement supersedes
all prior agreements and sets forth the entire understanding between the parties
hereto with respect to the subject matter hereof and cannot be changed,
modified, extended or terminated except upon written amendment executed by the
Employee and approved by the board and executed on the Company's behalf by a
duly authorized officer.  The provisions of this Agreement may provide for
payments to the Employee under certain compensation or bonus plans (including
without limitation the Stock Plan, the Bonus Plan, the 401(k) Plan and the
CRC-Evans Plan) under circumstances where such plans would not provide for
payment thereof.  It is the specific intention of the parties that the
provisions of this Agreement shall supersede any provisions to the contrary in
such plans, and such plans shall be deemed to have been amended to correspond
with this Agreement without further action by the Company or the Board.

             (b)  Nothing in this Agreement shall be construed as giving the
Employee any right to be retained in the employ of the Company or any of its
Subsidiaries.

             (c)  The Employee acknowledges that from time to time, the Company
and its subsidiaries may establish, maintain and distribute employee manuals or
handbooks or personnel policy manuals, and officers or other representatives of
the Company or its Subsidiaries may make written or oral statements relating to
personnel policies and procedures.  Such manuals, handbooks and statements are
intended only for general guidance.  No policies, procedures or statements of
any nature by or on behalf of the Company or its Subsidiaries (whether written
or oral, and whether or not contained in any employee manual or handbook or
personnel policy manual), and no acts or practices of any nature, shall be
construed to modify this Agreement.

            (d)   All of the terms and provisions of this Agreement shall be
binding upon and inure to the benefit of and be enforceable by the respective
heirs, representatives, successors and assigns of the parties hereto, except
that the duties and


                                          13



<PAGE>



responsibilities of the Employee and the Company hereunder shall not be
assignable in whole or in part by the Company.

             17.  SEVERABILITY.  If any provision of this Agreement or
application thereof to anyone or under any circumstances shall be determined to
be invalid or unenforceable, such invalidity or unenforceability shall not
affect any other provisions or applications of this Agreement which can be given
effect without the invalid or unenforceable provision or application.

             18.  REMEDIES CUMULATIVE - NO WAIVER.  No right conferred upon
the Employee by this Agreement is intended to be exclusive of any other right or
remedy, and each and every such right or remedy shall be cumulative and shall be
in addition to any other right or remedy given hereunder or now or hereafter
existing at law or in equity.  No delay or omission by the Employee in
exercising any right, remedy or power hereunder or existing at law or in equity
shall be construed as a waiver thereof, including without limitation any delay
by the Employee in delivering a Notice of Termination pursuant to Section 2
hereof after an event has occurred which would, if the Employee had resigned,
have constituted a Termination upon a Change of Control pursuant to Section
1(p)(ii) of this Agreement.

             19.  MISCELLANEOUS.  All section headings are for convenience
only.  This Agreement may be executed in several counterparts, each of which is
an original.  It shall not be necessary in making proof of this Agreement or any
counterpart hereof to produce or account for any of the other counterparts.

             IN WITNESS WHEREOF, the undersigned, intending to be legally bound,
have executed this Agreement on May 4, 1992, but as of the date first above
written.


Attest:                                   ENTERRA CORPORATION



/s/ M. Gay Mather                     By: /s/ D. Dale Wood
- ------------------------------            ---------------------------------
M. Gay Mather                             D. Dale Wood
Secretary                                 President and Chief
                                            Executive Officer


/s/ Shirley M. Brandt                     /s/ M. Timothy Carey
- ------------------------------            ---------------------------------
        Witness                           M. TIMOTHY CAREY


                                      14

<PAGE>



                              SEVERANCE AGREEMENT


             Agreement made as of February 20, 1992 between Enterra Corporation,
a Delaware corporation (the "Company"), and C. Paul Evans (the "Employee").

             WHEREAS, the Employee has previously been employed as President and
Chief Operating Officer of CRC-Evans Pipeline International, Inc., a
"Subsidiary" (as defined in Section 1 hereof); and

             WHEREAS, as of the date of this Agreement the Employee shall become
employed by CRC-Evans Pipeline International, Inc. as its President and Chief
Executive Officer, and shall also hold the title of President of the Pipeline
Services and Equipment Group of the Company;

             WHEREAS, the Company considers it essential to foster the
employment of well qualified key management personnel for the Company and its
Subsidiaries, and, in this regard, the board of directors of the Company
recognizes that, as is the case with many publicly held corporations, the
possibility of a change in control of the Company may exist and that such
possibility, and the uncertainty and questions which it may raise among
management, may result in the departure or distraction of key management
personnel to the detriment of the Company and its Subsidiaries;

             WHEREAS, the board of directors of the Company has determined that
appropriate steps should be taken to reinforce and encourage the continued
attention and dedication of key members of the management of the Company and its
Subsidiaries to their assigned duties without distraction in the face of
potentially disturbing circumstances arising from the possibility of a change in
control of the Company, although no such change is now contemplated; and

             WHEREAS, in order to induce the Employee to remain in the employ of
the Company's CRC-Evans Pipeline international, Inc. Subsidiary, the Company
agrees that the Employee shall receive the compensation and benefits set forth
in this Agreement in the event his employment with such Subsidiary is terminated
subsequent to a "Change of Control" (as defined in Section l hereof) of the
Company as a cushion against the financial and career impact on the Employee of
any such Change of Control;

             NOW, THEREFORE, in consideration of the foregoing and the mutual
covenants and agreements hereinafter set forth and intending to be legally bound
hereby, the parties hereto agree as follows:



<PAGE>



             l.   DEFINITIONS.  For all purposes of this Agreement, the
following terms shall have the meanings specified in this Section unless the
context clearly otherwise requires:

             (a)  "Affiliate" and "Associate" shall have the respective meanings
ascribed to such terms in Rule 12b-2 of the General Rules and Regulations under
the Securities,Exchange Act of 1934, as amended (the "Exchange Act").

             (b)  "Base Salary" shall mean the total cash remuneration earned by
the Employee on an annualized basis in all capacities with the Company and its
Subsidiaries, including any compensation the payment of which has been deferred
pursuant to a salary reduction or deferral plan (including a 401(k) plan, other
than company matching contributions) or agreement, but exclusive of any cash
payments made to him under the Company's Bonus Plan, or any contributions made
for his benefit to the Company's 401(k) Plan or CRC-Evans Plan.

             (c)  A Person shall be deemed the "Beneficial Owner" of any
securities:

                  (i)    that such Person or any of such Person's Affiliates or
            Associates, directly or indirectly, has the right to acquire
            (whether such right is exercisable immediately or only after the
            passage of time) pursuant to any agreement, arrangement or
            understanding (whether or not in writing) or upon the exercise of
            conversion rights, exchange rights, rights, warrants or options, or
            otherwise; PROVIDED, HOWEVER, that a Person shall not be deemed
            the "Beneficial Owner" of securities tendered pursuant to a tender
            or exchange offer made by such Person or any of such Person's
            Affiliates or Associates until such tendered securities are accepted
            for payment, purchase or exchange;

                  (ii)   that such Person or any of such Person's Affiliates or
            Associates, directly or indirectly, has the right to vote or dispose
            of or has "beneficial ownership" of (as determined pursuant to Rule
            13d-3 of the General Rules and Regulations under the Exchange Act),
            including without limitation pursuant to any agreement, arrangement
            or understanding, whether or not in writing; PROVIDED, HOWEVER,
            that a Person shall not be deemed the "Beneficial Owner" of any
            security under this subsection (ii) as a result of an oral or
            written agreement, arrangement or understanding to vote such
            security if such agreement, arrangement or understanding (A) arises
            solely from a revocable proxy given in response to a public proxy or
            consent solicitation made pursuant to, and in accordance with, the
            applicable provisions of the General Rules and


                                       2



<PAGE>



             Regulations under the Exchange Act, and (B) is not then reportable
             by such Person on Schedule 13D under the Exchange Act (or any
             comparable or successor report); or

                  (iii)  that are beneficially owned, directly or indirectly, by
             any other Person (or any Affiliate or Associate thereof) with which
             such Person (or any of such Person's Affiliates or Associates) has
             any agreement, arrangement or understanding (whether or not in
             writing) for the purpose of acquiring, holding, voting (except,
             pursuant to a revocable proxy as described in the proviso to
             subsection (ii) above) or disposing of any voting securities of the
             Company;

PROVIDED, HOWEVER, that nothing in this Section 1(c) shall cause a Person
engaged in business as an underwriter of securities to be the "Beneficial
Owner" of any securities acquired through such Person's participation in good
faith in a firm commitment underwriting until the expiration of forty days after
the date of such acquisition.

             (d)  "Board" shall mean the board of directors- of the Company.

             (e)  "Bonus Plan" shall mean the Company's Management Incentive
Bonus Plan, as in effect immediately prior to a Change of Control.

             (f)  "Change of Control" shall be deemed to have taken place if (i)
any Person (except the Company, any Subsidiary of the Company, any employee
benefit plan of the Company or of any Subsidiary of the Company, any Person or
entity organized, appointed or established by the Company for or pursuant to the
terms of any such employee benefit plan, or an Exempted Person), together with
all Affiliates and Associates of such Person acting in concert as described in
Section 14(d) (2) of the Exchange Act, shall become the Beneficial Owner in the
aggregate of 30% or more of the Common Stock of the Company then outstanding
within the meaning of Rule 13d-3 promulgated under the Exchange Act.

             (g)  "CRC-Evans Plan" shall mean the CRC-Evans Money Purchase
Pension Plan, as in effect immediately prior to a Change of Control.

             (h)  "Exempted Person" shall mean any of Shamrock Holdings of
California, Inc., a Delaware corporation ("Shamrock"), Shamrock Holdings, Inc.,
a Delaware corporation ("Shamrock Holdings"), or any Affiliate or Associate of
Shamrock or Shamrock Holdings.  "Exempted Person" shall not include transferees
from any Exempted Person except where such


                                           3



<PAGE>



transferees are Affiliates or Associates of Shamrock or Shamrock Holdings.

             (i)  "401(k) Plan" shall mean the Company's 401(k) Plan, as in
effect immediately prior to a Change of Control.

             (j)  "Normal Retirement Date" shall mean, the first day of the
calendar month coincident with or next following the Employee's 65th birthday.

             (k)  "Person" shall mean any individual, firm, corporation,
partnership or other entity.

             (l)  "Stock Plan" shall mean the Company's Stock Option Plan or any
successor plan thereto, as in effect immediately prior to a Change of Control.

             (m)  "Subsidiary" shall have the meaning ascribed to such term in
Rule 12b-2 of the General Rules and Regulations under the Exchange Act.

             (n)  "Termination Date" shall mean the date of receipt of the
Notice of Termination described in Section 2 hereof or any later date specified
therein, as the case may be.

             (o)  "Termination of Employment" shall mean the termination of the
Employee's actual employment relationship with the Company.

             (p)  "Termination upon a Change of Control" shall mean a
Termination of Employment upon or within two years after a Change of Control
either:

                  (i)    initiated by the Company or any Subsidiary for any
            reason other than (x) the Employee's continuous illness, injury or
            incapacity for a period of twenty-six consecutive weeks, (y) for
            "cause," as defined in Section 8.3 of the Employment Agreement (as
            amended), dated as of February l, 1988, among the Company, CRC-Evans
            Pipeline International, Inc. and the Employee (the "Employment
            Agreement"), or (z) by reason of the occurrence of the Normal
            Retirement Date; or

                  (ii)   initiated by the Employee following one or more of the
            following occurrences:

                  (A)    a significant reduction by the Company or its
             Subsidiaries of the authority, duties or responsibilities of the
             Employee immediately prior to the Change of Control;


                                       4



<PAGE>



                  (B)    any removal of the Employee from or any failure to
             re-elect the Employee to the officer positions with the Company and
             its Subsidiaries held by him immediately prior to the Change of
             Control, except in connection with promotions to higher office or
             in connection with consolidations among the Company's Subsidiaries
             where the Employee is elected to similar positions in the successor
             company or companies;

                  (C)    a reduction by the Company in the Employee's Base
             Salary as in effect immediately prior to the Change of Control;

                  (D)    revocation or any modification (except as may be
             required in the normal course of business in light of any
             requirement of or change in federal law or regulations) of the
             Bonus Plan, 401(k) Plan or CRC-Evans Plan, or any action taken
             pursuant to the terms of such plans, which materially (x) reduces
             the opportunity to receive compensation under any of such plans of
             equivalent amounts received by the Employee during the two fiscal
             years immediately preceding the Change of Control, subject to the
             right of the Board to establish in a manner consistent with past
             practice prior to the Change of Control reasonable goals under such
             plans, (y) reduces the compensation payable to the Employee under
             any of such plans but which does not effect comparable reductions
             in the compensation payable to the other participants in such
             plans, or (z) increases the compensation payable to other
             participants in any of such plans but which does not effect
             corresponding increases in the amount of compensation payable to
             the Employee; or

                  (E)    a transfer of the Employee, without his express written
             consent, to a location which is outside the general metropolitan
             area in which his principal place of business immediately preceding
             the Change of Control may be located, or which is otherwise an
             unreasonable commuting distance from the Employee's principal
             residence at the date of the Change of Control.

            2.    NOTICE OF TERMINATION.  Any Termination upon a Change of
Control shall be communicated by a Notice of Termination to the other party
hereto given in accordance with Section 14 hereof.  For purposes of this
Agreement, a "Notice of Termination" means a written notice which (i) indicates
the specific termination provision in this Agreement relied upon,


                                       5



<PAGE>



(ii) briefly summarizes the facts and circumstances deemed to provide a basis
for termination of the Employee's employment under the provision so indicated,
and (iii) if the termination date is other than the date of receipt of such
notice, specifies the termination date (which date shall not be more than 15
days after the giving of such notice)

            3.    SEVERANCE COMPENSATION UPON TERMINATION.

            (a)   Subject to the provisions of Section 10 hereof and to
adjustment as provided in paragraph (b) below and Section 9(a), in the event of
the Employee's Termination upon a Change of Control, the Company shall pay to
the Employee, within fifteen days after the Termination Date (or as soon as
possible thereafter in the event that the procedures set forth in Section 10(b)
hereof cannot be completed within 15 days), an amount in cash equal to two times
the sum of paragraphs (i) and (ii) below:

                  (i)    The Employee's Base Salary in effect either immediately
            prior to the Termination of Employment or immediately prior to the
            Change of Control, whichever is higher; and

                  (ii)   The average of the annual bonuses earned by the
            Employee under the Bonus Plan in the two fiscal years immediately
            prior to such Termination of Employment.

             (b)  In the event the Employee's Normal Retirement Date would occur
prior to twenty-four months after the Termination Date, the aggregate cash
amount determined as set forth in (a) above shall be reduced by multiplying it
by a fraction, the numerator of which shall be the number of days from the
Termination Date to the Employee's Normal Retirement Date and the denominator of
which shall be 730.  No payments shall be due Employee in the event that the
Normal Retirement Date has been reached prior to the Termination Date.

            4.    OTHER PAYMENTS.  Subject to the provisions of Section 10
hereof, in the event of the Employee's Termination upon a Change of Control, the
Company shall:

            (a)   pay to the Employee within fifteen days after the Termination
Date, unless the Employee has exercised such options and rights, an amount equal
to the excess, if any, of the aggregate fair market value of the shares of the
Company's Common Stock subject to all stock options and stock appreciation
rights outstanding and unexercised immediately prior to the Termination Date,
whether vested or unvested, granted to the Employee under the Stock Plan, over
the aggregate exercise price of all such stock options.  For purposes of this
paragraph, fair market value shall mean the highest of (x) the closing price of
the Company's


                                         6



<PAGE>



Common Stock on the business day immediately preceding the Termination Date, if
such Common Stock is publicly traded at such date, (y) if such Common Stock is
not publicly traded at the Termination Date, the value determined by an
independent appraiser, such appraiser to be selected by the Employee and to be
reasonably satisfactory to the Company (the fees and expenses of such appraiser
to be borne by the Company), or (z) the highest per share price of the Company's
Common Stock paid (in connection with the Change of Control or at any time
thereafter) by the Person or group whose acquisition of shares of Common Stock
of the Company has given rise to a Change of Control;

             (b)  to the extent permitted by applicable law, continue or cause
to be continued until 24 months after the Termination Date, on the cost-sharing
basis (if any) in effect immediately prior to the Change of Control, medical,
dental and life insurance benefits (and, at the option of the Employee,
disability insurance benefits) substantially equivalent in all material respects
to those furnished by the Company and its subsidiaries to the Employee
immediately prior to the Change of Control; PROVIDED, HOWEVER, that if the
Employee's Normal Retirement Date would have occurred prior to 24 months after
the Termination Date, the obligation of the Company to provide such benefits
shall cease at the Employee's Normal Retirement Date; and PROVIDED FURTHER,
HOWEVER, that the obligation of the Company to provide such benefits shall
cease at such time as the Employee is employed on a full time basis by a
corporation not owned or controlled by the Employee that provides the Employee,
on substantially the same cost-sharing basis (if any) between the Company and
the Employee in effect immediately prior to the Change of Control, with medical,
dental, life and disability insurance benefits substantially equivalent in all
material respects to those furnished by the Company and its Subsidiaries to the
Employee immediately prior to the Change of Control;

             (c)  for vesting purposes only, in the event of a Termination upon
a Change of Control occurring prior to the Normal Retirement Date, credit the
Employee with the lesser of (i) two additional "years of service" (as defined in
the Company's 401(k) Plan) or (ii) the period of time from the Termination Date
to the Normal Retirement Date under each of the Company's 401(k) Plan and
CRC-Evans Plan, in addition to the years of service that would have otherwise
been calculated by reference solely to the Termination Date, it being understood
that benefits in respect of the two additional years of service shall to the
extent permitted by applicable law be paid to the Employee under the Company's
401(k) Plan or CRC-Evans Plan, and that the Company shall, to the extent
necessary to provide the Employee the additional benefits intended hereby, amend
the 401(k) Plan or CRC-Evans Plan or pay such additional benefits outside the
plan as may be necessary; and


                                           7



<PAGE>



             (d)  permit the Employee to continue the use of his Company car, if
any, without any cost for a period of six months thereafter.  Thereafter, the
Employee shall return the car to the Company unless, in the case of a car owned
by the Company, the Employee elects to purchase the car from the Company at the
net book value thereof at the date of the purchase or, in the case of a car
leased by the Company, the Employee pays the Company, as such amounts become due
and payable, all rental payments charged to the Company for the use of such car
for the remainder of the lease therefore.

             5.   VESTING AND ACCELERATION OF CERTAIN BENEFITS.  In the event
of a Termination upon a Change of Control, and subject to the provisions of
Section 10 hereof, all restrictions remaining on the Termination Date on the
restricted shares, if any, received by the Employee, pursuant to the Stock Plan
shall lapse, and said shares shall thereupon be owned by the Employee free and
clear of all restrictions of any nature whatsoever, except those, if any, under
applicable federal and state securities laws.

             6.   ENFORCEMENT.

             (a)  In the event that the Company shall fail or refuse to make
payment of any amounts due the Employee under Sections 3, 4 and 5 hereof within
the respective time periods provided therein, the Company shall pay to the
Employee, in addition to the payment of any other sums provided in this
Agreement, interest, compounded daily, on any amount remaining unpaid from the
date payment is required under Section 3, 4 or 5, as appropriate, until paid to
the Employee, at the rate from time to time announced by Wells Fargo Bank, N.A.
as its "prime rate" plus 2%, each change in such rate to take effect on the
effective date of the change in such prime rate.

             (b)  It is the intent of the parties that the Employee not be
required to incur any expenses associated with the enforcement of his rights
under this Agreement by arbitration, litigation or other legal action because
the cost and expense thereof would substantially detract from the benefits
intended to be extended to the Employee hereunder.  Accordingly, the Company
shall pay the Employee on demand the amount necessary to reimburse the Employee
in full for all expenses (including all attorneys' fees and legal expenses)
incurred by the Employee in enforcing any of the obligations of the Company
under this Agreement.

            7.    NO MITIGATION. The Employee shall not be required to
mitigate the amount of any payment or benefit provided for in this Agreement by
seeking other employment or otherwise.


                                           8



<PAGE>



             8.   NON-EXCLUSIVITY OF RIGHTS.  Nothing in this Agreement shall
prevent or limit the Employee's continuing or future participation in or rights
under any benefit, bonus, incentive or other plan or program provided by the
Company or any of its Subsidiaries or Affiliates and for which the Employee may
qualify.

             9.   COORDINATION OF BENEFITS; NO SET-OFF; TAXES.

             (a)  The Employment Agreement, the severance plan or policy, if
any, applicable to employees of the Company or the Subsidiary which employs the
Employee, and any other severance payments required by applicable statutes or
provided under government programs may provide compensation and benefits to
Employee upon events which also constitute a Termination upon a Change of
Control as defined in this Agreement.  In such event, Employee shall be entitled
only to the largest cash compensation provided for under any of such agreements,
plans, policies, statutes or programs and the maximum benefit continuance
provided for under any of such agreements, plans, policies, statutes or
programs, and the payments referred to in Section 3 hereof shall be reduced to
the extent necessary to effect such coordination of benefits.

             (b)  Except as specifically set forth in (a) above, the Company's
obligation to make the payments provided for in this Agreement and otherwise to
perform its obligations hereunder shall not be affected by any circumstances,
including, without limitation, any set-off, counterclaim, recoupment, defense or
other right which the Company may have against the Employee or others.

             (c)  Employee alone, and not the Company or any Subsidiary, shall
be responsible for the payment of all federal, state and local taxes in respect
of the payments to be made and benefits to be provided under this Agreement.

             10.  CERTAIN REDUCTION OF PAYMENTS.

             (a)  Anything in this Agreement to the contrary notwithstanding, in
the event that it shall be determined as set forth herein that any payment or
distribution by the Company to or for the benefit of the Employee, whether paid
or payable or distributed or distributable pursuant to the terms of this
Agreement or otherwise (a "Payment"), would constitute an "excess parachute
payment" within the meaning of Section 280G of the Internal Revenue Code of
1986, as amended (the "Code"), and that it would be economically advantageous to
the Company to reduce the Payment to avoid or reduce the taxation of excess
parachute payments under Section 4999 of the Code, the aggregate present value
of amounts payable or distributable to or for the benefit of the Employee
pursuant to this Agreement (such payments or


                                           9



<PAGE>



distributions pursuant to this Agreement are hereinafter referred to as
"Agreement Payments") shall be reduced (but not below zero) to the Reduced
Amount.  The "Reduced Amount" shall be an amount expressed in present value
which maximizes the aggregate present value of Agreement Payments without
causing any Payment to be subject to the taxation under Section 4999 of the
Code.  For purposes of this Section 10, present value shall be determined in
accordance with Section 280G(d) (4) of the Code.

             (b)  All determinations to be made under this Section 10 shall be
made by KPMG Peat Marwick, or the Company's independent public accountant
immediately prior to the Change of Control if other than KPMG Peat Marwick (the
"Accounting Firm"), which firm shall use its best efforts to provide its
determinations and any supporting calculations both to the Company and the
Employee within 10 days of the Termination Date. Any such determination by the
Accounting Firm shall be binding upon the Company and the Employee.  The Company
shall in its sole discretion determine which and how much of the Agreement
Payments shall be eliminated or reduced consistent with the requirements of this
Section 10.  Within five days after the Company's determination, the Company
shall pay (or cause to be paid) or distribute (or cause to be distributed) to or
for the benefit of the Employee such amounts as are then due to the Employee
under this Agreement.

             (c)  As a result of the uncertainty in the application of Section
280G of the Code at the time of the initial determination by the Accounting Firm
hereunder, it is possible that Agreement Payments, as the case may be, will have
been made by the Company which should not have been made ("Overpayment") or that
additional Agreement Payments which have not been made by the Company could have
been made ("Underpayment"), in each case, consistent with the calculations
required to be made hereunder. Within two years after the Termination of
Employment, the Accounting Firm shall review the determination made by it
pursuant to the preceding paragraph.  In the event that the Accounting Firm
determines that an Overpayment has been made, any such Overpayment shall be
treated for all purposes as a loan to the Employee which the Employee shall
repay to the Company together with interest at the applicable Federal rate
provided for in Section 7872(f)(2) of the Code (the "Federal Rate"); PROVIDED,
however, that no amount shall be payable by the Employee to the Company if and
to the extent such payment would not reduce the amount which is subject to
taxation under Section 4999 of the Code.  In the event that the Accounting Firm
determines that an Underpayment has occurred, any such Underpayment shall be
promptly paid by the Company to or for the benefit of the Employee together with
interest at the Federal Rate.


                                          10



<PAGE>



             (d)  All of the fees and expenses of the Accounting Firm in
performing the determinations referred to in subsections (b) and (c) above shall
be borne solely by the Company.  The Company agrees to indemnify and hold
harmless the Accounting Firm of and from any and all claims, damages and
expenses of any nature resulting from or relating to its determinations pursuant
to subsections (b) and (c) above, except for claims, damages or expenses
resulting from the gross negligence or willful misconduct of the Accounting
Firm.

             11.  SETTLEMENT OF ALL DISPUTES.

             (a)  Any dispute, controversy or claim arising out of or relating
to any provision of this Agreement or the Employee's Termination upon a Change
of Control shall be settled by arbitration in the City of Houston, Texas, in
accordance with the commercial arbitration rules then in effect of the American
Arbitration Association, before a panel of three arbitrators, two of whom shall
be selected by the Company and the Employee, respectively, and the third of whom
shall be selected by the other two arbitrators.  Each arbitrator selected as
provided herein is required to be or have been a director or an executive
officer of a corporation whose shares of common stock were listed during at
least one year of such service on the New York Stock Exchange or the American
Stock Exchange or quoted on the National Association of Securities Dealers
Automated Quotations System. Any award entered by the arbitrators shall be
final, binding and nonappealable and judgment may be entered thereon by any
party in accordance with applicable law in any court of competent
jurisdiction.  This arbitration provision shall be specifically
enforceable.  The fees of the American Arbitration Association and the
arbitrators and any expenses relating to the conduct of the arbitration shall be
paid by the Company.

             (b)  The party or parties challenging the right of the Employee to
the benefits of this Agreement shall in all circumstances have the burden of
proof.

             12.  TERM OF AGREEMENT.  This Agreement shall commence as of the
date first written above and shall continue in effect until the earlier of (i)
the date upon which the Employee ceases to be in the employ of the Company or
any Subsidiary thereof for any reason other than a Termination upon a Change of
Control, or (ii) 24 months after a Change of Control has occurred, PROVIDED,
HOWEVER, that all of the obligations of the parties hereunder arising after a
Change of Control shall continue in effect until such obligations are satisfied
or have expired.

             13.  SUCCESSOR COMPANY.  The Company shall require any successor
or successors (whether direct or indirect, by purchase, merger, consolidation or
otherwise) to all or substantially all of the business and/or assets Of the
Company, by agreement in


                                          11



<PAGE>



form and substance satisfactory to the Employee, to acknowledge expressly that
this Agreement is binding upon and enforceable against the Company in accordance
with the terms hereof, and to become jointly and severally obligated with the
Company to perform this Agreement in the same manner and to the same extent that
the Company would be required to perform if no such succession or successions
had taken place.  Failure of the Company to obtain such agreement prior to the
effectiveness of any such succession shall be a breach of this Agreement.  As
used in this Agreement, the Company shall mean the Company as hereinbefore
defined and any such successor or successors to its business and/or assets,
jointly and severally.

             14.  NOTICE.  All notices and other communications required or
permitted hereunder or necessary or convenient in connection herewith shall be
in writing and shall be delivered personally or mailed by registered or
certified mail, return receipt requested, or by overnight express courier
service, as follows:

            If to the Company, to:

               Enterra Corporation
               13100 Northwest Freeway
               Sixth Floor
               Houston, TX 77040
               Attention:  Chief Executive Officer

            With a required copy to:

               Morgan, Lewis & Bockius
               2000 One Logan Square
               Philadelphia, PA 19103-6993
               Attention:  David R. King, Esq.

            If to the Employee, to:

               C.   Paul Evans
               CRC-Evans Pipeline International, Inc.
               13100 Northwest Freeway
               Sixth Floor
               Houston, TX 77040
               Attention:  C. Paul Evans

            With a required copy to:

               Boesche, McDermott & Eskridge
               800 Oneok Plaza
               100 West 5th Street
               Tulsa, OK 74103-4216
               Attention:  David B. McKinney, Esq.


                                      12



<PAGE>



or to such other names or addresses as the Company or the Employee, as the case
may be, shall designate by notice to the other party hereto in the manner
specified in this Section.  Any such notice shall be deemed delivered and
effective when received in the case of personal delivery, five days after
deposit, postage prepaid, with the U.S. Postal Service in the case of registered
or certified mail, or on the next business day in the case of overnight express
courier service.

             15.  GOVERNING LAW.  THIS AGREEMENT SHALL BE GOVERNED BY AND
INTERPRETED UNDER THE LAWS OF THE STATE OF DELAWARE WITHOUT GIVING EFFECT TO
SUCH STATES CONFLICT OF LAWS PROVISIONS.

             16.  CONTENTS OF AGREEMENT AMENDMENT AND ASSIGNMENT.

             (a)  This Agreement is intended to be in addition to the provisions
of the Employment Agreement; provided, however, that in the event of a
Termination upon a Change of Control, (i) Sections 5 and 6 of the Employment
Agreement, and (ii) any similar provisions contained in any agreements then in
effect entered into by Employee with CRC-Evans Pipeline International, Inc., a
Texas corporation, or its predecessor by merger, shall terminate and be of no
further force and effect.  Subject to the foregoing, this Agreement supersedes
all prior agreements and sets forth the entire understanding between the parties
hereto with respect to the subject matter hereof and cannot be changed,
modified, extended or terminated except upon written amendment executed by the
Employee and approved by the board and executed on the Company's behalf by a
duly authorized officer.  The provisions of this Agreement may provide for
payments to the Employee under certain compensation or bonus plans (including
without limitation the Stock Plan, the Bonus Plan, the 401(k) Plan and the
CRC-Evans Plan) under circumstances where such plans would not provide for
payment thereof.  It is the specific intention of the parties that the
provisions of this Agreement shall supersede any provisions to the contrary in
such plans, and such plans shall be deemed to have been amended to correspond
with this Agreement without further action by the Company or the Board.

             (b)  Nothing in this Agreement shall be construed as giving the
Employee any right to be retained in the employ of the Company or any of its
Subsidiaries.

             (c)  The Employee acknowledges that from time to time, the Company
and its subsidiaries may establish, maintain and distribute employee manuals or
handbooks or personnel policy manuals, and officers or other representatives of
the Company or its Subsidiaries may make written or oral statements relating to
personnel policies and procedures.  Such manuals, handbooks and statements are
intended only for general guidance.  No policies,


                                          13



<PAGE>



procedures or statements of any nature by or on behalf of the Company or its
Subsidiaries (whether written or oral, and whether or not contained in any
employee manual or handbook or personnel policy manual), and no acts or
practices of any nature, shall be construed to modify this Agreement.

             (d)  All of the terms and provisions of this Agreement shall be
binding upon and inure to the benefit of and be enforceable by the respective
heirs, representatives, successors and assigns of the parties hereto, except
that the duties and responsibilities of the Employee and the Company hereunder
shall not be assignable in whole or in part by the Company.

             17.  SEVERABILITY.  If any provision of this Agreement or
application thereof to anyone or under any circumstances shall be determined to
be invalid or unenforceable, such invalidity or unenforceability shall not
affect any other provisions or applications of this Agreement which can be given
effect without the invalid or unenforceable provision or application.

             18.  REMEDIES CUMULATIVE - NO WAIVER.  No right conferred upon
the Employee by this Agreement is intended to be exclusive of any other right or
remedy, and each and every such right or remedy shall be cumulative and shall be
in addition to any other right or remedy given hereunder or now or hereafter
existing at law or in equity.  No delay or omission by the Employee in
exercising any right, remedy or power hereunder or existing at law or in equity
shall be construed as a waiver thereof, including without limitation any delay
by the Employee in delivering a Notice of Termination pursuant to Section 2
hereof after an event has occurred which would, if the Employee had resigned,
have constituted a Termination upon a Change of Control pursuant to Section 1(p)
(ii) of this Agreement.

             19.  MISCELLANEOUS.  All section headings are for convenience
only.  This Agreement may be executed in several counterparts, each of which is
an original.  It shall not be necessary in making proof of this Agreement or any
counterpart hereof to produce or account for any of the other counterparts.


                                          14



<PAGE>



            IN WITNESS WHEREOF, the undersigned, intending to be legally bound,
have executed this Agreement on March __, 1992, but as of the date first above
written.


Attest:                                   ENTERRA CORPORATION


/s/ M. Gay Mather                         By: /s/ D. Dale Wood
- ------------------------------               ------------------------------
M. Gay Mather                                 D. Dale Wood
Secretary                                     President and
                                                Chief Executive Officer


/s/ Steven W. Krablin                      /s/ C. Paul Evans
- ------------------------------             --------------------------------
           Witness                         C. PAUL EVANS


                                          15

<PAGE>



                              SEVERANCE AGREEMENT



            Agreement made as of April 1, 1993 between Pipeline Induction Heat
Limited (the "Company") and Brian Charles Goff (the "Employee").

            WHEREAS, the Employee is presently employed by the Company as its
Managing Director;

            WHEREAS, the Company considers it essential to foster the employment
of well qualified key management personnel for the Company and, in this regard,
the directors of the Company recognize that, as is the case with many publicly
held corporations, the possibility of a change in control of Enterra Corporation
("Enterra"), the parent of the Company, may exist and that such possibility, and
the uncertainty and questions which it may raise among management of the
Company, may result in the departure or distraction of key management personnel
to the detriment of the Company;

            WHEREAS, the directors of the Company, with the concurrence of
Enterra, have determined that appropriate steps should be taken to reinforce and
encourage the continued attention and dedication of key members of the
management of the Company to their assigned duties without distraction in the
face of potentially disturbing circumstances arising from the possibility of a
change in control of Enterra or the Company, although no such change is now
contemplated; and

            WHEREAS, in order to induce the Employee to remain in the employ of
the Company, the Company agrees that the Employee shall receive the compensation
and benefits set forth in this Agreement in the event his employment with the
Company is terminated subsequent to a "Change of Control" (as defined in Section
l hereof) of Enterra or the Company as a cushion against the financial and
career impact on the Employee of any such Change of Control;

            NOW, THEREFORE, in consideration of the foregoing and the mutual
covenants and agreements hereinafter set forth and intending to be legally bound
hereby, the parties hereto agree as follows:

            l.  DEFINITIONS.  For all purposes of this Agreement, the
following terms shall have the meanings specified in this Section unless the
context clearly otherwise requires:

            (a)   "Affiliate" and "Associate" shall have the respective meanings
ascribed to such terms in Rule 12b-2 of


<PAGE>



the General Rules and Regulations under the U.S. Securities Exchange Act of
1934, as amended (the "Exchange Act").

            (b)   "Base Salary" shall mean the total cash remuneration earned by
the Employee on an annualized basis in all capacities with the Company and its
Subsidiaries, if any, but exclusive of any cash payments made to him under the
Company's Bonus Plan, if any, or under any type of deferred compensation or
retirement plan;

            (c)   A Person shall be deemed the "Beneficial Owner" of any
securities:

                  (i)   that such Person or any of such Person's Affiliates or
            Associates, directly or indirectly, has the right to acquire
            (whether such right is exercisable immediately or only after the
            passage of time) pursuant to any agreement, arrangement or
            understanding (whether or not in writing) or upon the exercise of
            conversion rights, exchange rights, rights, warrants or options, or
            otherwise; PROVIDED, HOWEVER, that a Person shall not be deemed
            the "Beneficial Owner" of securities tendered pursuant to a tender
            or exchange offer made by such Person or any of such Person's
            Affiliates or Associates until such tendered securities are accepted
            for payment, purchase or exchange;

                  (ii)  that such Person or any of such Person's Affiliates or
            Associates, directly or indirectly, has the right to vote or dispose
            of or has "beneficial ownership" of (as determined pursuant to Rule
            13d-3 of the General Rules and Regulations under the Exchange Act),
            including without limitation pursuant to any agreement, arrangement
            or understanding, whether or not in writing; PROVIDED, HOWEVER,
            that a Person shall not be deemed the "Beneficial Owner" of any
            security under this subsection (ii) as a result of an oral or
            written agreement, arrangement or understanding to vote such
            security if such agreement, arrangement or understanding (a) arises
            solely from a revocable proxy given in response to a public proxy or
            consent solicitation made pursuant to, and in accordance with, the
            applicable provisions of the General Rules and Regulations under the
            Exchange Act, and (b) is not then reportable by such Person on
            Schedule 13D under the Exchange Act (or any comparable or successor
            report); or



                                       2



<PAGE>



                  (iii) that are beneficially owned, directly or indirectly, by
            any other Person (or any Affiliate or Associate thereof) with which
            such Person (or any of such Person's Affiliates or Associates) has
            any agreement, arrangement or understanding (whether or not in
            writing) for the purpose of acquiring, holding, voting or disposing
            of any voting securities of Enterra;

PROVIDED, HOWEVER, that nothing in this Section 1(c) shall cause a Person
engaged in business as an underwriter of securities to be the "Beneficial Owner"
of any securities acquired through such Person's participation in good faith in
a firm commitment underwriting until the expiration of forty days after the date
of such acquisition.

            (d)   "Bonus Plan" shall mean any Company or Enterra bonus plan in
which the Employee participates, as in effect immediately prior to a Change of
Control.

            (e)   "Change of Control" shall be deemed to have taken place if (i)
any Person (except Enterra, any Subsidiary of Enterra, any employee benefit plan
of Enterra or of any Subsidiary of Enterra, or any Person or entity organized,
appointed or established by Enterra for or pursuant to the terms of any such
employee benefit plan), together with all Affiliates and Associates of such
Person acting in concert as described in Section 14(d)(2) of the Exchange Act,
shall become the Beneficial Owner in the aggregate of 30% or more of the Common
Stock of Enterra then outstanding within the meaning of Rule 13d-3 promulgated
under the Exchange Act, or (ii) the Company ceases to be controlled, directly or
indirectly, by Enterra, or if it sells all or substantially all of its assets to
a company not so controlled by Enterra.

            (f)   "Normal Retirement Date" shall mean the first day of the
calendar month coincident with or next following the Employee's 65th birthday.

            (g)   "Person" shall mean any individual, firm, corporation,
partnership or other entity.

            (h)   "Stock Plan" shall mean Enterra's Stock Option Plan or any
successor plan thereto, as in effect immediately prior to a Change of Control.

            (i)   "Subsidiary" shall have the meaning ascribed to such term in
Rule 12b-2 of the General Rules and Regulations under the Exchange Act.

            (j)   "Termination Date" shall mean the date of receipt of the
Notice of Termination described in Section 2

                                           3


<PAGE>



hereof or any later date specified therein, as the case may be.

            (k)   "Termination of Employment" shall mean the termination of the
Employee's actual employment relationship with the Company.

            (l)   "Termination upon a Change of Control" shall mean a
Termination of Employment upon or within two years after a Change of Control
either:

                  (i)   initiated by the Company or Enterra for any reason other
            than (x) the Employee's continuous illness, injury or incapacity for
            a period of six consecutive months, (y) for "cause," which shall
            mean misappropriation of funds, habitual insobriety, substance
            abuse, conviction of a crime involving moral turpitude, or gross
            negligence in the performance of his duties, which gross negligence
            has had a material adverse effect on the business, operations,
            assets, properties or financial condition of the Company and its
            Subsidiaries, if any, taken as a whole, or (z) by reason of the
            occurrence of the Normal Retirement Date; or

                  (ii)  initiated by the Employee following one or more of the
            following occurrences:

                        (A)   a significant reduction by the Company or its
                  Subsidiaries, if any, of the authority, duties or
                  responsibilities of the Employee immediately prior to the
                  Change of Control;

                        (B)   any removal of the Employee from or any failure to
                  re-elect the Employee to the officer positions with the
                  Company and its subsidiaries, if any, held by him immediately
                  prior to the Change of Control, except in connection with
                  promotions to higher office or in connection with
                  consolidations among the Company's Subsidiaries where the
                  Employee is elected to similar positions in the successor
                  company or companies;

                        (C)   a reduction by the Company in the Employee's Base
                  Salary as in effect immediately prior to the Change of
                  Control;

                        (D)   any revocation or material modification (except as
                  may be required in the

                                       4



<PAGE>



                  normal course of business in light of any requirement of or
                  change in applicable law or regulations) of any Bonus Plan or
                  deferred compensation or retirement plan, or any action taken
                  pursuant to the terms of any of such plans, which materially
                  (x) reduces the opportunity to receive compensation under any
                  of such plans of amounts equivalent to those received by the
                  Employee during the two fiscal years immediately preceding the
                  Change of Control, subject to the right of the directors of
                  the Company or of Enterra to establish in a manner consistent
                  with past practice prior to the Change of Control reasonable
                  goals under such plans, (y) reduces the compensation payable
                  to the Employee under any of such plans but which does not
                  effect comparable reductions in the compensation payable to
                  the other participants in such plans, or (z) increases the
                  compensation payable to other participants in any of such
                  plans but which does not effect corresponding increases in the
                  amount of compensation payable to the Employee; or

                        (E)   a transfer of the Employee, without his express
                  written consent, to a location which is outside the general
                  metropolitan area in which his principal place of business
                  immediately preceding the Change of Control may be located, or
                  which is otherwise an unreasonable commuting distance from the
                  Employee's principal residence at the date of the Change of
                  Control.

            2.  NOTICE OF TERMINATION.  Any Termination upon a Change of
Control shall be communicated by a Notice of Termination to the other party
hereto given in accordance with Section 12 hereof.  For purposes of this
Agreement, a "Notice of Termination" means a written notice which (i) indicates
the specific termination provision in this Agreement relied upon, (ii) briefly
summarizes the facts and circumstances deemed to provide a basis for termination
of the Employee's employment under the provision so indicated, and (iii) if the
termination date is other than the date of receipt of such notice, specifies the
termination date (which date shall not be more than 15 days after the giving of
such notice).



                                       5



<PAGE>



            3.    SEVERANCE COMPENSATION UPON TERMINATION.

            (a) Subject to the adjustments provided in paragraph (b) below and
Section 9(a) hereof, in the event of the Employee's Termination upon a Change of
Control, the Company shall pay to the Employee, within 15 days after the
Termination Date, an amount in cash equal to two times the sum of paragraphs (i)
and (ii) below:

                  (i)   the Employee's Base Salary in effect either immediately
            prior to the Termination of Employment or immediately prior to the
            Change of Control, whichever is higher; and

                  (ii)  the average of the annual bonuses earned by the Employee
            under any Bonus Plan in the two fiscal years immediately prior to
            such Termination of Employment.

            (b) In the event the Employee's Normal Retirement Date would occur
prior to 24 months after the Termination Date, the aggregate cash amount
determined as set forth in (a) above shall be reduced by multiplying it by a
fraction, the numerator of which shall be the number of days from the
Termination Date to the Employee's Normal Retirement Date and the denominator of
which shall be 730.  No payments shall be due Employee in the event that the
Normal Retirement Date has been reached prior to the Termination Date.

            4.    OTHER PAYMENTS.  In the event of the Employee's Termination
upon a Change of Control, the Company shall also:

            (a) pay to the Employee within 15 days after the Termination Date,
unless the Employee has exercised such options and rights, an amount equal to
the excess, if any, of the aggregate fair market value of the shares of
Enterra's Common Stock subject to all stock options and stock appreciation
rights outstanding and unexercised immediately prior to the Termination Date,
whether vested or unvested, granted to the Employee under the Stock Plan, over
the aggregate exercise price of all such stock options.  Upon such payment, the
options or rights shall terminate.  For purposes of this paragraph, fair market
value shall mean the highest of (x) the closing price of Enterra's Common Stock
on the business day immediately preceding the Termination Date, if such Common
Stock is publicly traded at such date, (y) if such Common Stock is not publicly
traded at the Termination Date, the value determined by an independent
appraiser, such appraiser to be selected by the Employee and to be reasonably
satisfactory to the Company (the fees and expenses of such appraiser to be borne
by the Company), and (z) in respect of a Change of Control under Section 1(e)(i)
hereof, the highest

                                           6



<PAGE>



per share price of Enterra's Common Stock paid (in connection with the Change of
Control or at any time thereafter) by the Person or group whose acquisition of
shares of Common Stock of Enterra has given rise to a Change of Control;

            (b) to the extent permitted by applicable law, continue or cause to
be continued until 24 months, after the Termination Date, on the cost-sharing
basis (if any) in effect immediately prior to the Change of Control, medical,
dental and life insurance benefits (and, at the option of the Employee,
disability insurance benefits) substantially equivalent in all material respects
to those furnished by the Company and its Subsidiaries to the Employee
immediately prior to the Change of Control; PROVIDED, HOWEVER, that if the
Employee's Normal Retirement Date would have occurred prior to 24 months after
the Termination Date, the obligation of the Company to provide such benefits
shall cease at the Employee's Normal Retirement Date; and PROVIDED FURTHER,
HOWEVER, that the obligation of the Company to provide such benefits shall
cease at such time as the Employee is employed on a full time basis by a
corporation not owned or controlled by the Employee that provides the Employee,
on substantially the same cost-sharing basis (if any) between the Company and
the Employee in effect immediately prior to the Change of Control, with medical,
dental, life and disability insurance benefits substantially equivalent in all
material respects to those furnished by the Company and its Subsidiaries to the
Employee immediately prior to the Change of Control; and

            (c) permit the Employee to receive any car allowance or continue the
use of his Company car, if any, without any cost for a period of six months
thereafter. Thereafter, the Employee shall return the car to the Company unless,
in the case of a car owned by the Company, the Employee elects to purchase the
car from the Company at the net book value thereof at the date of the purchase
or, in the case of a car leased by the Company, the Employee pays the Company,
as such amounts become due and payable, all rental payments charged to the
Company for the use of such car for the remainder of the lease therefor.

            5.  VESTING AND ACCELERATION OF CERTAIN BENEFITS. In the event
of a Termination upon a Change of Control, all restrictions remaining on the
Termination Date on the restricted shares, if any, received by the Employee
pursuant to the Stock Plan shall lapse, and said shares shall thereupon be owned
by the Employee free and clear of all restrictions of any nature whatsoever,
except those, if any, under applicable U.S. federal and state securities laws.



                                           7



<PAGE>



            6.  ENFORCEMENT.

            (a) In the event that the Company shall fail or refuse to make
payment of any amounts due the Employee under Sections 3, 4 and 5 hereof within
the respective time periods provided therein, the Company shall pay to the
Employee, in addition to the payment of any other sums provided in this
Agreement, interest, compounded daily, on any amount remaining unpaid from the
date payment is required under Section 3, 4 or 5, as appropriate, until paid to
the Employee, at the rate from time to time announced by Wells Fargo Bank, N.A.
as its "prime rate" plus 2%, each change in such rate to take effect on the
effective date of the change in such prime rate.

            (b) It is the intent of the parties that the Employee not be
required to incur any expenses associated with the enforcement of his rights
under this Agreement by arbitration, litigation or other legal action because
the cost and expense thereof would substantially detract from the benefits
intended to be extended to the Employee hereunder. Accordingly, the Company
shall pay the Employee on demand the amount necessary to reimburse the Employee
in full for all expenses (including all attorneys' fees and legal expenses)
incurred by the Employee in enforcing any of the obligations of the Company
under this Agreement.

            7.  NO MITIGATION.  The Employee shall not be required to
mitigate the amount of any payment or benefit provided for in this Agreement by
seeking other employment or otherwise.

            8.  NON-EXCLUSIVITY OF RIGHTS.  Nothing in this Agreement shall
prevent or limit the Employee's continuing or future participation in or rights
under any benefit, bonus, incentive or other plan or program provided by
Enterra, the Company or any of the Company's Subsidiaries or Affiliates and for
which the Employee may qualify.

            9.  COORDINATION OF BENEFITS; NO SET-OFF; TAXES.

            (a) The severance plan or policy, if any, applicable to employees
of the Company or any Subsidiary which employs the Employee, and any other
severance payments required by employment contracts or statutes or provided
under government programs may provide compensation and benefits to the Employee
upon events which also constitute a Termination upon a Change of Control as
defined in this Agreement.  In such event, Employee shall be entitled only to
the largest cash compensation provided for under any of such agreements, plans,
policies, statutes or programs and the maximum benefit continuance provided for
under any of such

                                        8



<PAGE>



agreements, plans, policies, statues or programs, and the payments referred to
in Section 3 hereof shall be reduced to the extent necessary to effect such
coordination of benefits.

            (b)   Except as specifically set forth in (a) above, the Company's
obligation to make the payments provided for in this Agreement and otherwise to
perform its obligations hereunder shall not be affected by any circumstances,
including, without limitation, any set-off, counterclaim, recoupment, defense or
other right which the Company may have against the Employee or others.

            (c)   Employee alone, and not Enterra, the Company or any
Subsidiary, shall be responsible for the payment of all taxes in respect of the
payments to be made and benefits to be provided under this Agreement.

            10.   SETTLEMENT OF ALL DISPUTES.

            (a)   Any dispute, controversy or claim arising out of or relating
to any provision of this Agreement or the Employee's Termination upon a Change
of Control shall be settled by arbitration in the City of Houston, Texas, in
accordance with the commercial arbitration rules then in effect of the American
Arbitration Association, before a panel of three arbitrators, one of whom shall
be selected by the Company, one of whom shall be selected by the Employee and
the third of whom shall be selected by the other two arbitrators.  Each
arbitrator selected as provided herein is required to be or have been a director
or an executive officer of a corporation whose shares of common stock were
listed during at least one year of such service on the New York Stock Exchange
or the American Stock Exchange or quoted on the National Association of
Securities Dealers Automated Quotations System.  Any award entered by the
arbitrators shall be final, binding and nonappealable and judgment may be
entered thereon by any party in accordance with applicable law in any court of
competent jurisdiction.  This arbitration provision shall be specifically
enforceable.  The fees of the American Arbitration Association and the
arbitrators and any expenses relating to the conduct of the arbitration shall be
paid by the Company.

            (b)   The party or parties challenging the right of the Employee to
the benefits of this Agreement shall in all circumstances have the burden of
proof.

            11.   TERM OF AGREEMENT.  This Agreement shall commence as of the
date first written above and shall continue in effect until the earlier of (i)
March 31, 1998 or such earlier date upon which the Employee ceases to be in the
employ of the Company or any Subsidiary thereof for any

                                        9



<PAGE>



reason other than a Termination Upon a Change of Control, or (ii) 24 months
after a Change of Control has occurred, PROVIDED, HOWEVER, that all of the
obligations of the parties hereunder arising after a Change of Control shall
continue in effect until such obligations are satisfied or have expired.

            12.  NOTICES.  All notices and other communications required or
permitted hereunder or necessary or convenient in connection herewith shall be
in writing and may be delivered personally or mailed by overnight express
courier service, as follows:

            If to the Company, to:

            Enterra Corporation
            2707 North Loop West
            Suite 1050
            Houston, TX 77008
            USA
            Attention:    The Chairman



            With a required copy to:

            Morgan, Lewis & Bockius
            2000 One Logan Square
            Philadelphia, PA 19103
            USA
            Attention:    David R. King, Esq.



            If to the Employee, to:

            Brian Charles Goff
            Rest Harrow
            Benty Heath Lane
            Willaston
            Cheshire
            England

or to such other names or addresses as the Company or the Employee, as the case
may be, shall designate by notice to the other party hereto in the manner
specified in this Section.  Any such notice shall be deemed delivered and
effective when received in the case of personal delivery, on the next business
day in the case of overnight express courier service or when actually received
if sent in any other fashion.

            13.   GOVERNING LAW.  THIS AGREEMENT SHALL BE GOVERNED BY AND
INTERPRETED UNDER THE LAWS OF THE STATE OF


                                       10


<PAGE>



DELAWARE, UNITED STATES OF AMERICA, WITHOUT GIVING EFFECT TO
SUCH STATE'S CONFLICT OF LAWS PROVISIONS.

            14.  CONTENTS OF AGREEMENT, AMENDMENT AND ASSIGNMENT.

            (a)  This Agreement supersedes all prior agreements and sets forth
the entire understanding between the parties hereto with respect to the subject
matter hereof and cannot be changed, modified, extended or terminated except
upon written amendment executed by (i) the Employee and (ii) after approval by
the directors of the Company and, in writing, by the chief executive officer of
Enterra, by a duly authorized director of the Company other than the Employee.
The provisions of this Agreement may provide for payments to the Employee under
certain compensation, bonus or stock option plans under circumstances where such
plans would not provide for payment thereof.  It is the specific intention of
the parties that the provisions of this Agreement shall supersede any provisions
to the contrary in such plans, and such plans shall be deemed to have been
amended to correspond with this Agreement without further action by the Company
or Enterra.

            (b)  Nothing in this Agreement shall be construed as giving the
Employee any right to be retained in the employ of Enterra, the Company or any
Subsidiary of either.

            (c)  The Employee acknowledges that from time to time, Enterra, the
Company and their Subsidiaries may establish, maintain and distribute employee
manuals or handbooks or personnel policy manuals, and officers or other
representatives thereof may make written or oral statements relating to
personnel policies and procedures.  Such manuals, handbooks and statements are
intended only for general guidance.  No policies, procedures or statements of
any nature by or on behalf of Enterra, the Company or any Subsidiary of either
(whether written or oral, and whether or not contained in any employee manual or
handbook or personnel policy manual), and no acts or practices of any nature,
shall be construed to modify this Agreement.

            (d)  All of the terms and provisions of this Agreement shall be
binding upon and inure to the benefit of and be enforceable by the respective
heirs, representatives, successors and assigns of the parties hereto, except
that the duties and responsibilities of the Employee and the Company hereunder
shall not be assignable in whole or in part by the Company.

            15.  SEVERABILITY.  If any provision of this Agreement or
application thereof to anyone or under any circumstances shall be determined to
be invalid or

                                        11



<PAGE>



unenforceable, such invalidity or unenforceability shall not affect any other
provisions or applications of this Agreement which can be given effect without
the invalid or unenforceable provision or application.

            16.  REMEDIES CUMULATIVE - NO WAIVER.  No right conferred upon the
Employee by this Agreement is intended to be exclusive of any other right or
remedy, and each and every such right or remedy shall be cumulative and shall be
in addition to any other right or remedy given hereunder or now or hereafter
existing at law or in equity.  No delay or omission by the Employee in
exercising any right, remedy or power hereunder or existing at law or in equity
shall be construed as a waiver thereof, including without limitation any delay
by the Employee in delivering a Notice of Termination pursuant to Section 2
hereof after an event has occurred which would, if the Employee had resigned,
have constituted a Termination upon a Change of Control pursuant to Section
1(l)(ii) of this Agreement.

            17.  MISCELLANEOUS.  All section headings are for convenience
only.  This Agreement may be executed in several counterparts, each of which
shall be an original.  It shall not be necessary in making proof of this
Agreement or any counterpart hereof to produce or account for any of the other
counterparts.


            IN WITNESS WHEREOF, the undersigned, intending to be legally bound,
have executed this Agreement as of the date first above written.



The COMMON SEAL of            )
PIPELINE INDUCTION HEAT       )
LIMITED was hereunto          )
affixed in the presence       )
of:-                          )


/s/ Chuck Evans

Director



Secretary



SIGNED SEALED and DELIVERED         )
by the said BRIAN CHARLES           )  /s/ Brian C. Goff
GOFF in the presence of:-           )



                                        12
<PAGE>



                              SEVERANCE AGREEMENT



            Agreement made as of February 8, 1990 between Enterra Corporation, a
Delaware corporation (the "Company"), and Steven C. Grant (the "Employee").

            WHEREAS, the Employee is presently employed by the Company as its
Senior Vice President - Finance and Chief Financial Officer;

            WHEREAS, the Company considers it essential to foster the employment
of well qualified key management personnel for the Company and its subsidiaries,
and, in this regard, the board of directors of the Company recognizes that, as
is the case with many publicly held corporations, the possibility of a change in
control of the Company may exist and that such possibility, and the uncertainty
and questions which it may raise among management, may result in the departure
or distraction of key management personnel to the detriment of the Company;

            WHEREAS, the board of directors of the Company has determined that
appropriate steps should be taken to reinforce and encourage the continued
attention and dedication of key members of the management of the Company and its
Subsidiaries to their assigned duties without distraction in the face of
potentially disturbing circumstances arising from the possibility of a change in
control of the Company, although no such change is now contemplated; and

            WHEREAS, in order to induce the Employee to remain in the employ of
the Company, the Company agrees that the Employee shall receive the compensation
and benefits set forth in this Agreement in the event his employment with the
Company is terminated subsequent to a "Change of Control" (as defined in Section
1 hereof) of the Company as a cushion against the financial and career impact on
the Employee of any such Change of Control;

            NOW, THEREFORE, in consideration of the foregoing and the mutual
covenants and agreements hereinafter set forth and intending to be legally bound
hereby, the parties hereto agree as follows:

            l.  DEFINITIONS. For all purposes of this Agreement, the following
terms shall have the meanings specified in this Section unless the context
clearly otherwise requires:


<PAGE>



            (a) "Affiliate" and "Associate" shall have the respective meanings
ascribed to such terms in Rule 12b-2 of the General Rules and Regulations under
the Securities Exchange Act of 1934, as amended (the "Exchange Act").

            (b) "Base Salary" shall mean the total cash remuneration earned by
the Employee on an annualized basis in all capacities with the Company and its
Subsidiaries, including any compensation the payment of which has been deferred
pursuant to a salary reduction or deferral plan (including a 401(k) plan, other
than company matching contributions) or agreement, but exclusive of any cash
payments made to him under the Company's Bonus Plan, or any contributions made
for his benefit to the Company's 401(k) Plan or CRC-Evans Plan.

            (c)   A Person shall be deemed the "Beneficial Owner" of any
securities:

                  (i)   that such Person or any of such Person's Affiliates or
            Associates, directly or indirectly, has the right to acquire
            (whether such right is exercisable immediately or only after the
            passage of time) pursuant to any agreement, arrangement or
            understanding (whether or not in writing) or upon the exercise of
            conversion rights, exchange rights, rights, warrants or options, or
            otherwise; PROVIDED, HOWEVER, that a Person shall not be deemed
            the "Beneficial Owner" of securities tendered pursuant to a tender
            or exchange offer made by such Person or any of such Person's
            Affiliates or Associates until such tendered securities are accepted
            for payment, purchase or exchange;

                  (ii)  that such Person or any of such Person's Affiliates or
            Associates, directly or indirectly, has the right to vote or dispose
            of or has "beneficial ownership" of (as determined pursuant to Rule
            13d-3 of the General Rules and Regulations under the Exchange Act),
            including without limitation pursuant to any agreement, arrangement
            or understanding, whether or not in writing; PROVIDED, HOWEVER,
            that a Person shall not be deemed the "Beneficial Owner" of any
            security under this subsection (ii) as a result of an oral or
            written agreement, arrangement or understanding to vote such
            security if such agreement, arrangement or understanding (A) arises
            solely from a revocable proxy given in response to a public proxy or
            consent solicitation made pursuant to, and in accordance with, the
            applicable provisions of


                                       2



<PAGE>



            the General Rules and Regulations under the Exchange Act, and (B) is
            not then reportable by such Person on Schedule 13D under the
            Exchange Act (or any comparable or successor report); or

                  (iii) that are beneficially owned, directly or indirectly, by
            any other Person (or any Affiliate or Associate thereof) with which
            such Person (or any of such Person's Affiliates or Associates) has
            any agreement, arrangement or understanding (whether or not in
            writing) for the purpose of acquiring, holding, voting (except,
            pursuant to a revocable proxy as described in the proviso to
            subsection (ii) above or the May 2, 1986 option agreement between
            Shamrock Holdings, Inc. and the shareholders known as the "SGS
            Group" or their successors) or disposing of any voting securities of
            the Company;

PROVIDED, HOWEVER, that nothing in this Section 1(c) shall cause a Person
engaged in business as an underwriter of securities to be the "Beneficial Owner"
of any securities acquired through such Person's participation in good faith in
a firm commitment underwriting until the expiration of forty days after the date
of such acquisition.

            (d)   "Board" shall mean the board of directors of the Company.

            (e)   "Bonus Plan" shall mean the Company's Management Incentive
Bonus Plan, as in effect immediately prior to a Change of Control.

            (f)   "Change of Control" shall be deemed to have taken place if (i)
any Person (except the Company, any Subsidiary of the Company, any employee
benefit plan of the Company or of any Subsidiary of the Company, any Person or
entity organized, appointed or established by the Company for or pursuant to the
terms of any such employee benefit plan, or an Exempted Person), together with
all Affiliates and Associates of such Person acting in concert as described in
Section 14(d) (2) of the Exchange Act, shall become the Beneficial Owner in the
aggregate of 30% or more of the Common Stock of the Company then outstanding
within the meaning of Rule 13d-3 promulgated under the Exchange Act.

            (g)   "CRC-Evans Plan" shall mean the CRC-Evans Money Purchase
Pension Plan, as in effect immediately prior to a Change of Control.

            (h)   "Exempted Person" shall mean any of Shamrock Holdings of
California, Inc., a Delaware corporation


                                       3



<PAGE>



("Shamrock"), Shamrock Holdings, Inc., a Delaware corporation ("Shamrock
Holdings"), or any Affiliate or Associate of shamrock or Shamrock Holdings.
"Exempted Person" shall not include transferees from any Exempted Person except
where such transferees are Affiliates or Associates of shamrock or Shamrock
Holdings.

            (i)   "401(k) Plan" shall mean the Company's 401(k) Plan, as in
effect immediately prior to a Change of Control.

            (j)   "Normal Retirement Date" shall mean the first day of the
calendar month coincident with or next following the Employee's 65th birthday.

            (k)   "Person" shall mean any individual, firm, corporation,
partnership or other entity.

            (l)   "Stock Plan" shall mean the Company's Stock Option Plan or any
successor plan thereto, as in effect immediately prior to a Change of Control.

            (m)   "Subsidiary" shall have the meaning ascribed to such term in
Rule 12b-2 of the General Rules and Regulations under the Exchange Act.

            (n)   "Termination Date" shall mean the date of receipt of the
Notice of Termination described in Section 2 hereof or any later date specified
therein, as the case may be.

            (o)   "Termination of Employment" shall mean the termination of the
Employee's actual employment relationship with the Company.

            (p)   "Termination upon a Change of Control" shall mean a
Termination of Employment upon or within two years after a Change of Control
either:

                  (i)   initiated by the Company for any reason other than (x)
            the Employee's continuous injury or incapacity for a period of six
            consecutive months, (y) for "cause," which shall mean
            misappropriation of funds, habitual insobriety, substance abuse,
            conviction of a crime involving moral turpitude, or gross negligence
            in the performance of his duties, which gross negligence has had a
            material adverse effect on the business, operations, assets,
            properties or financial condition of the Company and its
            Subsidiaries taken as a whole, or (z) by reason of the occurrence of
            the Normal Retirement Date; or


                                       4



<PAGE>



                  (ii)  initiated by the Employee following one or more of the
            following occurrences:

                       (A)   a significant reduction by the Company or its
                  Subsidiaries of the authority, duties or responsibilities of
                  the Employee immediately prior to the Change of Control;

                       (B)   any removal of the Employee from or any failure to
                  re-elect the Employee to the officer positions with the
                  Company and its Subsidiaries held by him immediately prior to
                  the Change of Control, except in connection with promotions to
                  higher office or in connection with consolidations among the
                  Company's Subsidiaries where the Employee is elected to
                  similar positions in the successor company or companies;

                       (C)   a reduction by the Company in the Employee's Base
                  Salary as in effect immediately prior to the Change of
                  Control;

                       (D)   revocation or any modification (except as may be
                  required in the normal course of business in light of any
                  requirement of or change in federal law or regulations) of the
                  Bonus Plan, 401(k) Plan or CRC-Evans Plan, or any action taken
                  pursuant to the terms of such plans, which materially (x)
                  reduces the opportunity to receive compensation under any
                  of such plans of equivalent amounts received by the Employee
                  during the two fiscal years immediately preceding the Change
                  of Control, subject to the right of the Board to establish in
                  a manner consistent with past practice prior to the Change of
                  Control reasonable goals under such plans, (y) reduces the
                  compensation payable to the Employee under any of such
                  plans but which does not effect comparable reductions in the
                  compensation payable to the other participants in such plans,
                  or (z) increases the compensation payable to other
                  participants in any of such plans but which does not effect
                  corresponding increases in the amount of compensation
                  payable to the Employee; or

                       (E)   a transfer of the Employee, without his express
                  written consent, to a location which is outside the general
                  metropolitan area in which his principal place of business


                                        5



<PAGE>



                  immediately preceding the Change of Control may be located, or
                  which is otherwise an unreasonable commuting distance from the
                  Employee's principal residence at the date of the Change of
                  Control.

            2.    NOTICE OF TERMINATION.  Any Termination upon a Change of
Control shall be communicated by a Notice of Termination to the other party
hereto given in accordance with Section 14 hereof. For purposes of this
Agreement, a "Notice of Termination" means a written notice which (i) indicates
the specific termination provision in this Agreement relied upon, (ii) briefly
summarizes the facts and circumstances deemed to provide a basis for termination
of the Employee's employment under the provision so indicated, and (iii) if the
termination date is other than the date of receipt of such notice, specifies the
termination date (which date shall not be more than 15 days after the giving of
such notice).

            3.    SEVERANCE COMPENSATION UPON TERMINATION.

            (a)   Subject to the provisions of Section 10 hereof and to
adjustment as provided in paragraph (b) below and Section 9(a), in the event of
the Employee's Termination upon a Change of Control, the Company shall pay to
the Employee, within fifteen days after the Termination Date (or as soon as
possible thereafter in the event that the procedures set forth in Section 10(b)
hereof cannot be completed within 15 days), an amount in cash equal to two times
the sum of paragraphs (i) and (ii) below:

                  (i)   The Employee's Base Salary in effect either immediately
            prior to the Termination of Employment or immediately prior to the
            Change of Control, whichever is higher; and

                  (ii)  The average of the annual bonuses earned by the Employee
            under the Bonus Plan in the two fiscal years immediately prior to
            such Termination of Employment.

            (b)   In the event the Employee's Normal Retirement Date would occur
prior to twenty-four months after the Termination Date, the aggregate cash
amount determined as set forth in (a) above shall be reduced by multiplying it
by a fraction, the numerator of which shall be the number of days from the
Termination Date to the Employee's Normal Retirement Date and the denominator of
which shall be 730.  No payments shall be due Employee in the event that the
Normal Retirement Date has been reached prior to the Termination Date.


                                       6



<PAGE>



            4.    OTHER PAYMENTS. Subject to the provisions of Section 10
hereof, in the event of the Employee's Termination upon a Change of Control, the
Company shall:

            (a)   pay to the Employee within fifteen days after the Termination
Date, unless the Employee has exercised such options and rights, an amount equal
to the excess, if any, of the aggregate fair market value of the shares of the
Company's Common Stock subject to all stock options and stock appreciation
rights outstanding and unexercised immediately prior to the Termination Date,
whether vested or unvested, granted to the Employee under the Stock Plan, over
the aggregate exercise price of all such stock options. For purposes of this
paragraph, fair market value shall mean the highest of (x) the closing price of
the Company's Common Stock on the business day immediately preceding the
Termination Date, if such Common Stock is publicly traded at such date, (y) if
such Common stock is not publicly traded at the Termination Date, the value
determined by an independent appraiser, such appraiser to be selected by the
Employee and to be reasonably satisfactory to the Company (the fees and expenses
of such appraiser to be borne by the Company), or (z) the highest per share
price of the Company's Common stock paid (in connection with the Change of
Control or at any time thereafter) by the Person or group whose acquisition of
shares of Common Stock of the Company has given rise to a Change of Control;

            (b)   to the extent permitted by applicable law, continue or cause
to be continued until 24 months after the Termination Date, on the cost-sharing
basis (if any) in effect immediately prior to the Change of Control, medical,
dental and life insurance benefits (and, at the option of the Employee,
disability insurance benefits) substantially equivalent in all material respects
to those furnished by the Company and its subsidiaries to the Employee
immediately prior to the Change of Control; PROVIDED, HOWEVER, that if the
Employee's Normal Retirement Date would have occurred prior to 24 months after
the Termination Date, the obligation of the Company to provide such benefits
shall cease at the Employee's Normal Retirement Date; and PROVIDED FURTHER,
HOWEVER, that the obligation of the Company to provide such benefits shall
cease at such time as the Employee is employed on a full time basis by a
corporation not owned or controlled by the Employee that provides the Employee,
on substantially the same cost-sharing basis (if any) between the Company and
the Employee in effect immediately prior to the Change of Control, with medical,
dental, life and disability insurance benefits substantially equivalent in all
material respects to those furnished by the Company and its subsidiaries to the
Employee immediately prior to the Change of Control;


                                         7



<PAGE>



            (c)   for vesting purposes only, in the event of a Termination upon
a Change of Control occurring prior to the Normal Retirement Date, credit the
Employee with the lesser of (i) two additional "years of service" (as defined in
the Company's 401(k) Plan) or (ii) the period of time from the Termination Date
to the Normal Retirement Date under each of the Company's 401(k) Plan and
CRC-Evans Plan, in addition to the years of service that would have otherwise
been calculated by reference solely to the Termination Date, it being understood
that benefits in respect of the two additional years of service shall be paid to
the Employee under the Company's 401(k) Plan or CRC-Evans Plan, and that the
Company shall, to the extent necessary to provide the Employee the additional
benefits intended hereby, amend the 401(k) Plan or CRC-Evans Plan or pay such
additional benefits outside the plan as may be necessary; and

            (d)   permit the Employee to continue the use of his Company car, if
any, without any cost for a period of six months thereafter.  Thereafter, the
Employee shall return the car to the Company unless, in the case of a car owned
by the Company, the Employee elects to purchase the car from the Company at the
net book value thereof at the date of the purchase or, in the case of a car
leased by the Company, the Employee pays the Company, as such amounts become due
and payable, all rental payments charged to the Company for the use of such car
for the remainder of the lease therefore.

            5.    VESTING AND ACCELERATION OF CERTAIN BENEFITS. In the event
of a Termination upon a Change of Control, and subject to the provisions of
Section 10 hereof, all restrictions remaining on the Termination Date on the
restricted shares, if any, received by the Employee, pursuant to the Stock Plan
shall lapse, and said shares shall thereupon be owned by the Employee free and
clear of all restrictions of any nature whatsoever, except those, if any, under
applicable federal and state securities laws.

            6.    ENFORCEMENT.

            (a)   In the event that the Company shall fail or refuse to make
payment of any amounts due the Employee under Sections 3, 4 and 5 hereof within
the respective time periods provided therein, the Company shall pay to the
Employee, in addition to the payment of any other sums provided in this
Agreement, interest, compounded daily, on any amount remaining unpaid from the
date payment is required under section 3, 4 or 5, as appropriate, until paid to
the Employee, at the rate from time to time announced by Wells Fargo Bank, N.A.
as its "prime rate" plus 2%, each change in such rate to take effect on the
effective date of the change in such prime rate.


                                         8



<PAGE>



            (b)   It is the intent of the parties that the Employee not be
required to incur any expenses associated with the enforcement of his rights
under this Agreement by arbitration, litigation or other legal action because
the cost and expense thereof would substantially detract from the benefits
intended to be extended to the Employee hereunder. Accordingly, the Company
shall pay the Employee on demand the amount necessary to reimburse the Employee
in full for all expenses (including all attorneys' fees and legal expenses)
incurred by the Employee in enforcing any of the obligations of the Company
under this Agreement.

            7.    NO MITIGATION. The Employee shall not be required to
mitigate the amount of any payment or benefit provided for in this Agreement by
seeking other employment or otherwise.

            8.    NON-EXCLUSIVITY OF RIGHTS. Nothing in this Agreement shall
prevent or limit the Employee's continuing or future participation in or rights
under any benefit, bonus, incentive or other plan or program provided by the
Company or any of its Subsidiaries or Affiliates and for which the Employee may
qualify.

            9.    COORDINATION OF BENEFITS; NO SET-OFF; TAXES.

            (a)   The severance plan or policy, if any, applicable to employees
of Enterra or the Subsidiary which employs the Employee, and any other severance
payments required by applicable statutes or provided under government programs
may provide compensation and benefits to Employee upon events which also
constitute a Termination upon a Change of Control as defined in this Agreement.
In such event, Employee shall be entitled only to the largest cash compensation
provided for under any of such agreements, plans, policies, statutes or programs
and the maximum benefit continuance provided for under any of such agreements,
plans, policies, statues or programs, and the payments referred to in Section 3
hereof shall be reduced to the extent necessary to effect such coordination of
benefits.

            (b)   Except as specifically set forth in (a) above, the Company's
obligation to make the payments provided for in this Agreement and otherwise to
perform its obligations hereunder shall not be affected by any circumstances,
including, without limitation, any set-off, counterclaim, recoupment, defense or
other right which the Company may have against the Employee or others.

            (c)   Employee alone, and not the Company or any Subsidiary, shall
be responsible for the payment of all


                                           9



<PAGE>



federal, state and local taxes in respect of the payments to be made and
benefits to be provided under this Agreement.

            10.   CERTAIN REDUCTION OF PAYMENTS.

            (a)   Anything in this Agreement to the contrary notwithstanding, in
the event that it shall be determined as set forth herein that any payment or
distribution by the Company to or for the benefit of the Employee, whether paid
or payable or distributed or distributable pursuant to the terms of this
Agreement or otherwise (a "Payment"), would constitute an "excess parachute
payment" within the meaning of Section 280G of the Internal Revenue Code of
1986, as amended (the "Code"), and that it would be economically advantageous to
the Company to reduce the Payment to avoid or reduce the taxation of excess
parachute payments under Section 4999 of the Code, the aggregate present value
of amounts payable or distributable to or for the benefit of the Employee
pursuant to this Agreement (such payments or distributions pursuant to this
Agreement are hereinafter referred to as "Agreement Payments") shall be reduced
(but not below zero) to the Reduced Amount. The "Reduced Amount" shall be an
amount expressed in present value which maximizes the aggregate present value of
Agreement Payments without causing any Payment to be subject to the taxation
under Section 4999 of the Code. For purposes of this Section 10, present value
shall be determined in accordance with Sect ion 280G(d) (4) of the Code.

            (b)   All determinations to be made under this Section 10 shall be
made by Peat Marwick Main & Co., or the Company's independent public accountant
immediately prior to the Change of Control if other than Peat Marwick Main & Co.
(the "Accounting Firm"), which firm shall use its best efforts to provide its
determinations and any supporting calculations both to the Company and the
Employee within 10 days of the Termination Date. Any such determination by the
Accounting Firm shall be binding upon the Company and the Employee. The Company
shall in its sole discretion determine which and how much of the Agreement
Payments shall be eliminated or reduced consistent with the requirements of this
Section 10. Within five days after the Company's determination, the Company
shall pay (or cause to be paid) or distribute (or cause to be distributed) to or
for the benefit of the Employee such amounts as are then due to the Employee
under this Agreement.

            (c)   As a result of the uncertainty in the application of Section
280G of the Code at the time of the initial determination by the Accounting Firm
hereunder, it is possible that Agreement Payments, as the case may be, will have
been made by the Company which should not have been made


                                          10



<PAGE>



("Overpayment") or that additional Agreement Payments which have not been made
by the Company could have been made ("Underpayment"), in each case, consistent
with the calculations required to be made hereunder. Within two years after the
Termination of Employment, the Accounting Firm shall review the determination
made by it pursuant to the preceding paragraph. In the event that the Accounting
Firm determines that an Overpayment has been made, any such Overpayment shall be
treated for all purposes as a loan to the Employee which the Employee shall
repay to the Company together with interest at the applicable Federal rate
provided for in Section 7872(f) (2) of the Code (the "Federal Rate"); PROVIDED,
HOWEVER, that no amount shall be payable by the Employee to the Company if and
to the extent such payment would not reduce the amount which is subject to
taxation under Section 4999 of the Code. In the event that the Accounting Firm
determines that an Underpayment has occurred, any such Underpayment shall be
promptly paid by the Company to or for the benefit of the Employee together with
interest at the Federal Rate.

            (d)   All of the fees and expenses of the Accounting Firm in
performing the determinations referred to in subsections (b) and (c) above shall
be borne solely by the Company. The Company agrees to indemnify and hold
harmless the Accounting Firm of and from any and all claims, damages and
expenses of any nature resulting from or relating to its determinations pursuant
to subsections (b) and (c) above, except for claims, damages or expenses
resulting from the gross negligence or willful misconduct of the Accounting
Firm.

            11.   SETTLEMENT OF ALL DISPUTES.

            (a)   Any dispute, controversy or claim arising out of or relating
to any provision of this Agreement or the Employee's Termination upon a Change
of Control shall be settled by arbitration in the City of Houston, Texas, in
accordance with the commercial arbitration rules then in effect of the American
Arbitration Association, before a panel of three arbitrators, two of whom shall
be selected by the Company and the Employee, respectively, and the third of whom
shall be selected by the other two arbitrators. Each arbitrator selected as
provided herein is required to be or have been a director or an executive
officer of a corporation whose shares of common stock were listed during at
least one year of such service on the New York Stock Exchange or the American
Stock Exchange or quoted on the National Association of Securities Dealers
Automated Quotations System. Any award entered by the arbitrators shall be
final, binding and nonappealable and judgment may be entered thereon by any
party in accordance with applicable law in any court of


                                          11



<PAGE>



competent jurisdiction. This arbitration provision shall be specifically
enforceable. The fees of the American Arbitration Association and the
arbitrators and any expenses relating to the conduct of the arbitration shall be
paid by the Company.

            (b)   The party or parties challenging the right of the Employee to
the benefits of this Agreement shall in all circumstances have the burden of
proof.

            12.   TERM OF AGREEMENT. This Agreement shall commence as of the
date first written above and shall continue in effect until the earlier of (i)
the date upon which the Employee ceases to be in the employ of the Company or
any Subsidiary thereof for any reason other than a Termination Upon a Change of
Control, or (ii) 24 months after a Change of Control has occurred, PROVIDED,
HOWEVER, that all of the obligations of the parties hereunder arising after a
Change of Control shall continue in effect until such obligations are satisfied
or have expired.

            13.   SUCCESSOR COMPANY. The Company shall require any successor
or successors (whether direct or indirect, by purchase, merger, consolidation or
otherwise) to all or substantially all of the business and/or assets of the
Company, by agreement in form and substance satisfactory to the Employee, to
acknowledge expressly that this Agreement is binding upon and enforceable
against the Company in accordance with the terms hereof, and to become jointly
and severally obligated with the Company to perform this Agreement in the same
manner and to the same extent that the Company would be required to perform if
no such succession or successions had taken place. Failure of the Company to
obtain such agreement prior to the effectiveness of any such succession shall be
a breach of this Agreement. As used in this Agreement, the Company shall mean
the Company as hereinbefore defined and any such successor or successors to its
business and/or assets, jointly and severally.

            14.   NOTICE. All notices and other communications required or
permitted hereunder or necessary or convenient in connection herewith shall be
in writing and shall be delivered personally or mailed by registered or
certified mail, return receipt requested, or by overnight express courier
service, as follows:

            If to the Company, to:

            Enterra Corporation
            2707 North Loop West
            Suite 1050
            Houston, TX 77008


                                      12



<PAGE>



            Attention:    The Chairman

            With a required copy to:

            Morgan, Lewis & Bockius
            2000 One Logan Square
            Philadelphia, PA 19103
            Attention:    David R. King, Esq.



            If to the Employee, to:

            Steven C. Grant
            13610 Alchester
            Houston, TX 77079

or to such other names or addresses as the Company or the Employee, as the case
may be, shall designate by notice to the other party hereto in the manner
specified in this Section. Any such notice shall be deemed delivered and
effective when received in the case of personal delivery, five days after
deposit, postage prepaid, with the U.S. Postal Service in the case of registered
or certified mail, or on the next business day in the case of overnight express
courier service.

            15.   GOVERNING LAW. THIS AGREEMENT SHALL BE GOVERNED BY AND
INTERPRETED UNDER THE LAWS OF THE STATE OF DELAWARE WITHOUT GIVING EFFECT TO ANY
CONFLICT OF LAWS PROVISIONS.

            16.   CONTENTS OF AGREEMENT, AMENDMENT AND ASSIGNMENT.

            (a)   This Agreement supersedes all prior agreements (including,
without limitation, the severance agreement dated February 9, 1989 which is
hereby terminated) and sets forth the entire understanding between the parties
hereto with respect to the subject matter hereof and cannot be changed,
modified, extended or terminated except upon written amendment executed by the
Employee and approved by the board and executed on the Company's behalf by a
duly authorized officer.  The provisions of this Agreement may provide for
payments to the Employee under certain compensation or bonus plans (including
without limitation the Stock Plan, the Bonus Plan, the 401(k) Plan and the
CRC-Evans Plan) under circumstances where such plans would not provide for
payment thereof. It is the specific intention of the parties that the provisions
of this Agreement shall supersede any provisions to the contrary in such plans,
and such plans shall be deemed to have been amended to correspond with this
Agreement without further action by the Company or the Board.


                                        13



<PAGE>



            (b)   Nothing in this Agreement shall be construed as giving the
Employee any right to be retained in the employ of the Company or any of its
Subsidiaries.

            (c)   The Employee acknowledges that from time to time, the Company
and its subsidiaries may establish, maintain and distribute employee manuals or
handbooks or personnel policy manuals, and officers or other representatives of
the Company or its Subsidiaries may make written or oral statements relating to
personnel policies and procedures. Such manuals, handbooks and statements are
intended only for general guidance. No policies, procedures or statements of any
nature by or on behalf of the Company or its Subsidiaries (whether written or
oral, and whether or not contained in any employee manual or handbook or
personnel policy manual), and no acts or practices of any nature, shall be
construed to modify this Agreement.

            (d)   All of the terms and provisions of this Agreement shall be
binding upon and inure to the benefit of and be enforceable by the respective
heirs, representatives, successors and assigns of the parties hereto, except
that the duties and responsibilities of the Employee and the Company hereunder
shall not be assignable in whole or in part by the Company.

            17.   SEVERABILITY. If any provision of this Agreement or
application thereof to anyone or under any circumstances shall be determined to
be invalid or unenforceable, such invalidity or unenforceability shall not
affect any other provisions or applications of this Agreement which can be given
effect without the invalid or unenforceable provision or application.

            18.   REMEDIES CUMULATIVE - NO WAIVER. No right conferred upon the
Employee by this Agreement is intended to be exclusive of any other right or
remedy, and each and every such right or remedy shall be cumulative and shall be
in addition to any other right or remedy given hereunder or now or hereafter
existing at law or in equity. No delay or omission by the Employee in exercising
any right, remedy or power hereunder or existing at law or in equity shall be
construed as a waiver thereof, including without limitation any delay by the
Employee in delivering a Notice of Termination pursuant to Section 2 hereof
after an event has occurred which would, if the Employee had resigned, have
constituted a Termination upon a Change of Control pursuant to Section 1(p)(ii)
of this Agreement.

            19.   MISCELLANEOUS. All section headings are for convenience
only. This Agreement may be executed in several


                                          14



<PAGE>



counterparts, each of which is an original. It shall not be necessary in making
proof of this Agreement or any counterpart hereof to produce or account for any
of the other counterparts.


            IN WITNESS WHEREOF, the undersigned, intending to be legally bound,
have executed this Agreement as of the date first above written.


Attest:                                      ENTERRA CORPORATION


/s/ Steven W. Krablin                        By:/s/ Thomas S. McIntosh
- -------------------------------                --------------------------------
     Asst. Secretary                           Thomas S. McIntosh
                                               President and Chief
                                                 Executive Officer


/s/ Gay Mather                               /s/ Steven C. Grant
- -------------------------------              ----------------------------------
           Witness                           Steven C. Grant


                                          15


<PAGE>



                               SEVERANCE AGREEMENT



          Agreement made as of February 8, 1990 between Enterra Corporation, a
Delaware corporation (the "Company"), and Edward C. Grimes (the "Employee").

          WHEREAS, the Employee is presently employed by Key Oilfield Supply &
Rentals Ltd., a "Subsidiary" (as defined in Section 1 hereof), as its President
and Chief Operating Officer;

          WHEREAS, the Company considers it essential to foster the employment
of well qualified key management personnel for the Company and its Subsidiaries,
and, in this regard, the board of directors of the Company recognizes that, as
is the case with many publicly held corporations, the possibility of a change in
control of the Company may exist and that such possibility, and the uncertainty
and questions which it may raise among management, may result in the departure
or distraction of key management personnel to the detriment of the Company;

          WHEREAS, the board of directors of the Company has determined that
appropriate steps should be taken to reinforce and encourage the continued
attention and dedication of key members of the management of the Company and its
Subsidiaries to their assigned duties without distraction in the face of
potentially disturbing circumstances arising from the possibility of a change in
control of the Company, although no such change is now contemplated; and

          WHEREAS, in order to induce the Employee to remain in the employ of
the Subsidiary, the Company agrees that the Employee shall receive the
compensation and benefits set forth in this Agreement in the event his
employment with the Company is terminated subsequent to a "Change of Control"
(as defined in Section 1 hereof) of the Company as a cushion against the
financial and career impact on the Employee of any such Change of Control;

          NOW, THEREFORE, in consideration of the foregoing and the mutual
covenants and agreements hereinafter set forth and intending to be legally bound
hereby, the parties hereto agree as follows:

          1.  DEFINITIONS. For all purposes of this Agreement, the following
terms shall have the meanings specified in this Section unless the context
clearly otherwise requires:

<PAGE>



          (a) "Affiliate" and "Associate" shall have the respective meanings
ascribed to such terms in Rule 12b-2 of the General Rules and Regulations under
the Securities Exchange Act of 1934, as amended (the "Exchange Act").

          (b) "Base Salary" shall mean the total cash remuneration earned by the
Employee on an annualized basis in all capacities with the Company and its
Subsidiaries, including any compensation the payment of which has been deferred
pursuant to a salary reduction or deferral plan (including a 401(k) plan, other
than company matching contributions) or agreement, but exclusive of any cash
payments made to him under the Company's Bonus Plan, or any contributions made
for his benefit to the Company's 401(k) Plan or CRC-Evans Plan.

          (c)  A Person shall be deemed the "Beneficial Owner" of any
securities:

               (i)  that such Person or any of such Person's Affiliates or
          Associates, directly or indirectly, has the right to acquire (whether
          such right is exercisable immediately or only after the passage of
          time) pursuant to any agreement, arrangement or understanding (whether
          or not in writing) or upon the exercise of conversion rights, exchange
          rights, rights, warrants or options, or otherwise; PROVIDED, HOWEVER,
          that a Person shall not be deemed the "Beneficial Owner" of securities
          tendered pursuant to a tender or exchange offer made by such Person or
          any of such Person's Affiliates or Associates until such tendered
          securities are accepted for payment, purchase or exchange;

               (ii) that such Person or any of such Person's Affiliates or
          Associates, directly or indirectly, has the right to vote or dispose
          of or has "beneficial ownership" of (as determined pursuant to Rule
          13d-3 of the General Rules and Regulations under the Exchange Act),
          including without limitation pursuant to any agreement, arrangement or
          understanding, whether or not in writing; PROVIDED, HOWEVER, that a
          Person shall not be deemed the "Beneficial Owner" of any security
          under this subsection (ii) as a result of an oral or written
          agreement, arrangement or understanding to vote such security if such
          agreement, arrangement or understanding (A) arises solely from a
          revocable proxy given in response to a public proxy or consent
          solicitation made pursuant to, and in accordance with, the applicable
          provisions of


                                        2

<PAGE>



          the General Rules and Regulations under the Exchange Act, and (B) is
          not then reportable by such Person on Schedule 13D under the Exchange
          Act (or any comparable or successor report); or

               (iii) that are beneficially owned, directly or indirectly, by any
          other Person (or any Affiliate or Associate thereof) with which such
          Person (or any of such Person's Affiliates or Associates) has any
          agreement, arrangement or understanding (whether or not in writing)
          for the purpose of acquiring, holding, voting (except, pursuant to a
          revocable proxy as described in the proviso to subsection (ii) above
          or the May 2, 1986 option agreement between Shamrock Holdings, Inc.
          and the shareholders known as the "SGS Group" or their successors) or
          disposing of any voting securities of the Company;

PROVIDED, HOWEVER, that nothing in this Section 1(c) shall cause a Person
engaged in business as an underwriter of securities to be the "Beneficial Owner"
of any securities acquired through such Person's participation in good faith in
a firm commitment underwriting until the expiration of forty days after the date
of such acquisition.

          (d)  "Board" shall mean the board of directors of the Company.

          (e)  "Bonus Plan" shall mean the Company's Management Incentive Bonus
Plan, as in effect immediately prior to a Change of Control.

          (f)  "Change of Control" shall be deemed to have taken place if (i)
any Person (except the Company, any Subsidiary of the Company, any employee
benefit plan of the Company or of any Subsidiary of the Company, any Person or
entity organized, appointed or established by the Company for or pursuant to the
terms of any such employee benefit plan, or an Exempted Person), together with
all Affiliates and Associates of such Person acting in concert as described in
Section 14(d) (2) of the Exchange Act, shall become the Beneficial Owner in the
aggregate of 30% or more of the Common Stock of the Company then outstanding
within the meaning of Rule 13d-3 promulgated under the Exchange Act.

          (g)  "CRC-Evans Plan" shall mean the CRC-Evans Money Purchase Pension
Plan, as in effect immediately prior to a Change of Control.

          (h)  "Exempted Person" shall mean any of Shamrock Holdings of
California, Inc., a Delaware corporation


                                        3

<PAGE>



("Shamrock"), Shamrock Holdings, Inc., a Delaware corporation ("Shamrock
Holdings"), or any Affiliate or Associate of Shamrock or Shamrock Holdings.
"Exempted Person" shall not include transferees from any Exempted Person except
where such transferees are Affiliates or Associates of Shamrock or Shamrock
Holdings.

          (i)  "401(k) Plan" shall mean the Company's 401(k) Plan, as in effect
immediately prior to a Change of Control.

          (j)  "Normal Retirement Date" shall mean the first day of the calendar
month coincident with or next following the Employee's 65th birthday.

          (k)  "Person" shall mean any individual, firm, corporation,
partnership or other entity.

          (l)  "Stock Plan" shall mean the Company's Stock Option Plan or any
successor plan thereto, as in effect immediately prior to a Change of Control.

          (m)  "Subsidiary" shall have the meaning ascribed to such term in Rule
12b-2 of the General Rules and Regulations under the Exchange Act.

          (n)  "Termination Date" shall mean the date of receipt of the Notice
of Termination described in Section 2 hereof or any later date specified
therein, as the case may be.

          (o)  "Termination of Employment" shall mean the termination of the
Employee's actual employment relationship with the Company.

          (p)  "Termination upon a Change of Control" shall mean a Termination
of Employment upon or within two years after a Change of Control either:

               (i)  initiated by the Company for any reason other than (x) the
          Employee's continuous illness, injury or incapacity for a period of
          six consecutive months, (y) for "cause," which shall mean
          misappropriation of funds, habitual insobriety, substance abuse,
          conviction of a crime involving moral turpitude, or gross negligence
          in the performance of his duties, which gross negligence has had a
          material adverse effect on the business, operations, assets,
          properties or financial condition of the Company and its Subsidiaries
          taken as a whole, or (z) by reason of the occurrence of the Normal
          Retirement Date; or


                                        4

<PAGE>



               (ii) initiated by the Employee following one or more of the
          following occurrences:

                    (A)  a significant reduction by the Company or its
               Subsidiaries of the authority, duties or responsibilities of the
               Employee immediately prior to the Change of Control;

                    (B)  any removal of the Employee from or any failure to re-
               elect the Employee to the officer positions with the Company and
               its Subsidiaries held by him immediately prior to the Change of
               Control, except in connection with promotions to higher office or
               in connection with consolidations among the Company's
               Subsidiaries where the Employee is elected to similar positions
               in the successor company or companies;

                    (C)  a reduction by the Company in the Employee's Base
               Salary as in effect immediately prior to the Change of Control;

                    (D)  revocation or any modification (except as may be
               required in the normal course of business in light of any
               requirement of or change in federal law or regulations) of the
               Bonus Plan, 401(k) Plan or CRC-Evans Plan, or any action taken
               pursuant to the terms of such plans, which materially (x) reduces
               the opportunity to receive compensation under any of such plans
               of equivalent amounts received by the Employee during the two
               fiscal years immediately preceding the Change of Control, subject
               to the right of the Board to establish in a manner consistent
               with past practice prior to the Change of Control reasonable
               goals under such plans, (y) reduces the compensation payable to
               the Employee under any of such plans but which does not effect
               comparable reductions in the compensation payable to the other
               participants in such plans, or (z) increases the compensation
               payable to other participants in any of such plans but which does
               not effect corresponding increases in the amount of compensation
               payable to the Employee; or

                    (E)  a transfer of the Employee, without his express written
               consent, to a location which is outside the general metropolitan
               area in which his principal place of business


                                        5

<PAGE>



               immediately preceding the Change of Control may be located, or
               which is otherwise an unreasonable commuting distance from the
               Employee's principal residence at the date of the Change of
               Control.

          2.   NOTICE OF TERMINATION.  Any Termination upon a Change of Control
shall be communicated by a Notice of Termination to the other party hereto given
in accordance with Section 14 hereof. For purposes of this Agreement, a "Notice
of Termination" means a written notice which (i) indicates the specific
termination provision in this Agreement relied upon, (ii) briefly summarizes the
facts and circumstances deemed to provide a basis for termination of the
Employee's employment under the provision so indicated, and (iii) if the
termination date is other than the date of receipt of such notice, specifies the
termination date (which date shall not be more than 15 days after the giving of
such notice).

          3.   SEVERANCE COMPENSATION UPON TERMINATION.

          (a)  Subject to the provisions of Section 10 hereof and to adjustment
as provided in paragraph (b) below and Section 9(a), in the event of the
Employee's Termination upon a Change of Control, the Company shall pay to the
Employee, within fifteen days after the Termination Date (or as soon as possible
thereafter in the event that the procedures set forth in Section 10(b) hereof
cannot be completed within 15 days), an amount in cash equal to two times the
sum of paragraphs (i) and (ii) below:

               (i)  The Employee's Base Salary in effect either immediately
          prior to the Termination of Employment or immediately prior to the
          Change of Control, whichever is higher; and

               (ii) The average of the annual bonuses earned by the Employee
          under the Bonus Plan in the two fiscal years immediately prior to such
          Termination of Employment.

          (b)  In the event the Employee's Normal Retirement Date would occur
prior to twenty-four months after the Termination Date, the aggregate cash
amount determined as set forth in (a) above shall be reduced by multiplying it
by a fraction, the numerator of which shall be the number of days from the
Termination Date to the Employee's Normal Retirement Date and the denominator of
which shall be 730.  No payments shall be due Employee in the event that the
Normal Retirement Date has been reached prior to the Termination Date.


                                        6

<PAGE>



          4.   OTHER PAYMENTS. Subject to the provisions of Section 10 hereof,
in the event of the Employee's Termination upon a Change of Control, the Company
shall:

          (a)  pay to the Employee within fifteen days after the Termination
Date, unless the Employee has exercised such options and rights, an amount equal
to the excess, if any, of the aggregate fair market value of the shares of the
Company's Common Stock subject to all stock options and stock appreciation
rights outstanding and unexercised immediately prior to the Termination Date,
whether vested or unvested, granted to the Employee under the Stock Plan, over
the aggregate exercise price of all such stock options. For purposes of this
paragraph, fair market value shall mean the highest of (x) the closing price of
the Company's Common Stock on the business day immediately preceding the
Termination Date, if such Common Stock is publicly traded at such date, (y) if
such Common Stock is not publicly traded at the Termination Date, the value
determined by an independent appraiser, such appraiser to be selected by the
Employee and to be reasonably satisfactory to the Company (the fees and expenses
of such appraiser to be borne by the Company), or (z) the highest per share
price of the Company's Common Stock paid (in connection with the Change of
Control or at any time thereafter) by the Person or group whose acquisition of
shares of Common Stock of the Company has given-rise to a Change of Control;

          (b)  to the extent permitted by applicable law, continue or cause to
be continued until 24 months after the Termination Date, on the cost-sharing
basis (if any) in effect immediately prior to the Change of Control, medical,
dental and life insurance benefits (and, at the option of the Employee,
disability insurance benefits) substantially equivalent in all material respects
to those furnished by the Company and its Subsidiaries to the Employee
immediately prior to the Change of Control; PROVIDED, HOWEVER, that if the
Employee's Normal Retirement Date would have occurred prior to 24 months after
the Termination Date, the obligation of the Company to provide such benefits
shall cease at the Employee's Normal Retirement Date; and PROVIDED FURTHER,
HOWEVER, that the obligation of the Company to provide such benefits shall cease
at such time as the Employee is employed on a full time basis by a corporation
not owned or controlled by the Employee that provides the Employee, on
substantially the same cost-sharing basis (if any) between the Company and the
Employee in effect immediately prior to the Change of Control, with medical,
dental, life and disability insurance benefits substantially equivalent in all
material respects to those furnished by the Company and its Subsidiaries to the
Employee immediately prior to the Change of Control;


                                        7

<PAGE>



          (c) for vesting purposes only, in the event of a Termination upon a
Change of Control occurring prior to the Normal Retirement Date, credit the
Employee with the lesser of (i) two additional "years of service" (as defined in
the Company's 401(k) Plan) or (ii) the period of time from the Termination Date
to the Normal Retirement Date under each of the Company's 401(k) Plan and CRC-
Evans Plan, in addition to the years of service that would have otherwise been
calculated by reference solely to the Termination Date, it being understood that
benefits in respect of the two additional years of service shall be paid to the
Employee under the Company's 401(k) Plan or CRC-Evans Plan, and that the Company
shall, to the extent necessary to provide the Employee the additional benefits
intended hereby, amend the 401(k) Plan or CRC-Evans Plan or pay such additional
benefits outside the plan as may be necessary; and

          (d) permit the Employee to continue the use of his Company car, if
any, without any cost for a period of six months thereafter.  Thereafter, the
Employee shall return the car to the Company unless, in the case of a car owned
by the Company, the Employee elects to purchase the car from the Company at the
net book value thereof at the date of the purchase or, in the case of a car
leased by the Company, the Employee pays the Company, as such amounts become due
and payable, all rental payments charged to the Company for the use of such car
for the remainder of the lease therefore.

          5.   VESTING AND ACCELERATION OF CERTAIN BENEFITS. In the event of a
Termination upon a Change of Control, and subject to the provisions of Section
10 hereof, all restrictions remaining on the Termination Date on the restricted
shares, if any, received by the Employee, pursuant to the Stock Plan shall
lapse, and said shares shall thereupon be owned by the Employee free and clear
of all restrictions of any nature whatsoever, except those, if any, under
applicable federal and state securities laws.

          6.   ENFORCEMENT.

          (a) In the event that the Company shall fail or refuse to make payment
of any amounts due the Employee under Sections 3, 4 and 5 hereof within the
respective time periods provided therein, the Company shall pay to the Employee,
in addition to the payment of any other sums provided in this Agreement,
interest, compounded daily, on any amount remaining unpaid from the date payment
is required under Section 3, 4 or 5, as appropriate, until paid to the Employee,
at the rate from time to time announced by Wells Fargo Bank, N.A. as its "prime
rate" plus 2%, each change in such rate to take effect on the effective date of
the change in such prime rate.


                                        8

<PAGE>



          (b) It is the intent of the parties that the Employee not be required
to incur any expenses associated with the enforcement of his rights under this
Agreement by arbitration, litigation or other legal action because the cost and
expense thereof would substantially detract from the benefits intended to be
extended to the Employee hereunder. Accordingly, the Company shall pay the
Employee on demand the amount necessary to reimburse the Employee in full for
all expenses (including all attorneys' fees and legal expenses) incurred by the
Employee in enforcing any of the obligations of the Company under this
Agreement.

          7.  NO MITIGATION. The Employee shall not be required to mitigate the
amount of any payment or benefit provided for in this Agreement by seeking other
employment or otherwise.

          8.  NON-EXCLUSIVITY OF RIGHTS. Nothing in this Agreement shall prevent
or limit the Employee's continuing or future participation in or rights under
any benefit, bonus, incentive or other plan or program provided by the Company
or any of its Subsidiaries or Affiliates and for which the Employee may qualify.

          9.   COORDINATION OF BENEFITS; NO SET-OFF; TAXES.

          (a) The severance plan or policy, if any, applicable to employees of
Enterra or the Subsidiary which employs the Employee, and any other severance
payments required by applicable statutes or provided under government programs
may provide compensation and benefits to Employee upon events which also
constitute a Termination upon a Change of Control as defined in this Agreement.
In such event, Employee shall be entitled only to the largest cash compensation
provided for under any of such agreements, plans, policies, statutes or programs
and the maximum benefit continuance provided for under any of such agreements,
plans, policies, statues or programs, and the payments referred to in Section 3
hereof shall be reduced to the extent necessary to effect such coordination of
benefits.

          (b) Except as specifically set forth in (a) above, the Company's
obligation to make the payments provided for in this Agreement and otherwise to
perform its obligations hereunder shall not be affected by any circumstances,
including, without limitation, any set-off, counterclaim, recoupment, defense or
other right which the Company may have against the Employee or others.

          (c)  Employee alone, and not the Company or any Subsidiary, shall be
responsible for the payment of all


                                        9

<PAGE>



federal, state and local taxes in respect of the payments to be made and
benefits to be provided under this Agreement.

          10.  CERTAIN REDUCTION OF PAYMENTS.

          (a)  Anything in this Agreement to the contrary notwithstanding, in
the event that it shall be determined as set forth herein that any payment or
distribution by the Company to or for the benefit or the Employee, whether paid
or payable or distributed or distributable pursuant to the terms of this
Agreement or otherwise (a "Payment"), would constitute an "excess parachute
payment" within the meaning of Section 280G of the Internal Revenue Code of
1986, as amended (the "Code"), and that it would be economically advantageous to
the Company to reduce the Payment to avoid or reduce the taxation-of excess
parachute payments under Section 4999 of the Code, the aggregate present value
of amounts payable or distributable to or for the benefit of the Employee
pursuant to this Agreement (such payments or distributions pursuant to this
Agreement are hereinafter referred to as "Agreement Payments") shall be reduced
(but not below zero) to the Reduced Amount. The "Reduced Amount" shall be an
amount expressed in present value which maximizes the aggregate present value of
Agreement Payments without causing any Payment to be subject to the taxation
under Section 4999 of the Code. For purposes of this Section 10, present value
shall be determined in accordance with Section 280G(d)(4) of the Code.

          (b)   All determinations to be made under this Section 10 shall be
made by Peat Marwick Main & Co., or the Company's independent public accountant
immediately prior to the Change of Control if other than Peat Marwick Main & Co.
(the "Accounting Firm"), which firm shall use its best efforts to provide its
determinations and any supporting calculations both to the Company and the
Employee within 10 days of the Termination Date. Any such determination by the
Accounting Firm shall be binding upon the Company and the Employee. The Company
shall in its sole discretion determine which and how much of the Agreement
Payments shall be eliminated or reduced consistent with the requirements of this
Section 10. Within five days after the Company's determination, the Company
shall pay (or cause to be paid) or distribute (or cause to be distributed) to or
for the benefit of the Employee such amounts as are then due to the Employee
under this Agreement.

          (c)  As a result of the uncertainty in the application of Section 280G
of the Code at the time of the initial determination by the Accounting Firm
hereunder, it is possible that Agreement Payments, as the case may be, will have
been made by the Company which should not have been made


                                       10

<PAGE>



("Overpayment") or that additional Agreement Payments which have not been made
by the Company could have been made ("Underpayment"), in each case, consistent
with the calculations required to be made hereunder. Within two years after the
Termination of Employment, the Accounting Firm shall review the determination
made by it pursuant to the preceding paragraph. In the event that the Accounting
Firm determines that an Overpayment has been made, any such Overpayment shall be
treated for all purposes as a loan to the Employee which the Employee shall
repay to the Company together with interest at the applicable Federal rate
provided for in Section 7872(f) (2) of the Code (the "Federal Rate"); PROVIDED,
HOWEVER, that no amount shall be payable by the Employee to the Company if and
to the extent such payment would not reduce the amount which is subject to
taxation under Section 4999 of the Code. In the event that the Accounting Firm
determines that an Underpayment has occurred, any such Underpayment shall be
promptly paid by the Company to or for the benefit of the Employee together with
interest at the Federal Rate.

          (d)  All of the fees and expenses of the Accounting Firm in performing
the determinations referred to in subsections (b) and (c) above shall be borne
solely by the Company. The Company agrees to indemnify and hold harmless the
Accounting Firm of and from any and all claims, damages and expenses of any
nature resulting from or relating to its determinations pursuant to subsections
(b) and (c) above, except for claims, damages or expenses resulting from the
gross negligence or willful misconduct of the Accounting Firm.

          11.  SETTLEMENT OF ALL DISPUTES.

          (a)  Any dispute, controversy or claim arising out of or relating to
any provision of this Agreement or the Employee's Termination upon a Change of
Control shall be settled by arbitration in the City of Houston, Texas, in
accordance with the commercial arbitration rules then in effect of the American
Arbitration Association, before a panel of three arbitrators, two of whom shall
be selected by the Company and the Employee, respectively, and the third of whom
shall be selected by the other two arbitrators. Each arbitrator selected as
provided herein is required to be or have been a director or an executive
officer of a corporation whose shares of common stock were listed during at
least one year of such service on the New York Stock Exchange or the American
Stock Exchange or quoted on the National Association of Securities Dealers
Automated Quotations System. Any award entered by the arbitrators shall be
final, binding and nonappealable and judgment may be entered thereon by any
party in accordance with applicable law in any court of


                                       11

<PAGE>



competent jurisdiction. This arbitration provision shall be specifically
enforceable. The fees of the American Arbitration Association and the
arbitrators and any expenses relating to the conduct of the arbitration shall be
paid by the Company.

          (b)  The party or parties challenging the right of the Employee to the
benefits of this Agreement shall in all circumstances have the burden of proof.

          12.  TERM OF AGREEMENT. This Agreement shall commence as of the date
first written above and shall continue in effect until the earlier of (i) the
date upon which the Employee ceases to be in the employ of the Company or any
Subsidiary thereof for any reason other than a Termination Upon a Change of
Control, or (ii) 24 months after a Change of Control has occurred, PROVIDED,
HOWEVER, that all of the obligations of the parties hereunder arising after a
Change of Control shall continue in effect until such obligations are satisfied
or have expired.

          13.  SUCCESSOR COMPANY. The Company shall require any successor or
successors (whether direct or indirect, by purchase, merger, consolidation or
otherwise) to all or substantially all of the business and/or assets of the
Company, by agreement in form and substance satisfactory to the Employee, to
acknowledge expressly that this Agreement is binding upon and enforceable
against the Company in accordance with the terms hereof, and to become jointly
and severally obligated with the Company to perform this Agreement in the same
manner and to the same extent that the Company would be required to perform if
no such succession or successions had taken place. Failure of.the Company to
obtain such agreement prior to the effectiveness of any such succession shall be
a breach of this Agreement. As used in this Agreement, the Company shall mean
the Company as hereinbefore defined and any such successor or successors to its
business and/or assets, jointly and severally.

          14.  NOTICE. All notices and other communications required or
permitted hereunder or necessary or convenient in connection herewith shall be
in writing and shall be delivered personally or mailed by registered or
certified mail, return receipt requested, or by overnight express courier
service, as follows:

          If to the Company, to:

          Enterra Corporation
          2707 North Loop West
          Suite 1050
          Houston, TX 77008


                                       12

<PAGE>



          Attention:  The Chairman

          With a required copy to:

          Morgan, Lewis & Bockius
          2000 One Logan Square
          Philadelphia, PA 19103
          Attention:  David R. King, Esq.


          If to the Employee, to:

          Edward C. Grimes
          123 Varsity Estates Grove, NW
          Calgary, Alberta T3B4C8

or to such other names or addresses as the Company or the Employee, as the case
may be, shall designate by notice to the other party hereto in the manner
specified in this Section. Any such notice shall be deemed delivered and
effective when received in the case of personal delivery, five days after
deposit, postage prepaid, with the U.S. Postal Service in the case of registered
or certified mail, or on the next business day in the case of overnight express
courier service.

          15.  GOVERNING LAW. THIS AGREEMENT SHALL BE GOVERNED BY AND
INTERPRETED UNDER THE LAWS OF THE STATE OF DELAWARE WITHOUT GIVING EFFECT TO ANY
CONFLICT OF LAWS PROVISIONS.

          16.  CONTENTS OF AGREEMENT. AMENDMENT AND ASSIGNMENT.

          (a) This Agreement supersedes all prior agreements and sets forth the
entire understanding between the parties hereto with respect to the subject
matter hereof and cannot be changed, modified, extended or terminated except
upon written amendment executed by the Employee and approved by the board and
executed on the Company's behalf by a duly authorized officer.  The provisions
of this Agreement may provide for payments to the Employee under certain
compensation or bonus plans (including without limitation the Stock Plan, the
Bonus Plan, the 401(k) Plan and the CRC-Evans Plan) under circumstances where
such plans would not provide for payment thereof. It is the specific intention
of the parties that the provisions of this Agreement shall supersede any
provisions to the contrary in such plans, and such plans shall be deemed to have
been amended to correspond with this Agreement without further action by the
Company or the Board.


                                       13

<PAGE>



          (b)  Nothing in this Agreement shall be construed as giving the
Employee any right to be retained in the employ of the Company or any of its
Subsidiaries.

          (c)  The Employee acknowledges that from time to time, the Company and
its subsidiaries may establish, maintain and distribute employee manuals or
handbooks or personnel policy manuals, and officers or other representatives of
the Company or its Subsidiaries may make written or oral statements relating to
personnel policies and procedures. Such manuals, handbooks and statements are
intended only for general guidance. No policies, procedures or statements of any
nature by or on behalf of the Company or its Subsidiaries (whether written or
oral, and whether or not contained in any employee manual or handbook or
personnel policy manual), and no acts or practices of any nature, shall be
construed to modify this Agreement.

          (d)  All of the terms and provisions of this Agreement shall be
binding upon and inure to the benefit of and be enforceable by the respective
heirs, representatives, successors and assigns of the parties hereto, except
that the duties and responsibilities of the Employee and the Company hereunder
shall not be assignable in whole or in part by the Company.

          17.  SEVERABILITY. If any provision of this Agreement or application
thereof to anyone or under any circumstances shall be determined to be invalid
or unenforceable, such invalidity or unenforceability shall not affect any other
provisions or applications of this Agreement which can be given effect without
the invalid or unenforceable provision or application.

          18.  REMEDIES CUMULATIVE - NO WAIVER. No right conferred upon the
Employee by this Agreement is intended to be exclusive of any other right or
remedy, and each and every such right or remedy shall be cumulative and shall be
in addition to any other right or remedy given hereunder or now or hereafter
existing at law or in equity. No delay or omission by the Employee in exercising
any right, remedy or power hereunder or existing at law or in equity shall be
construed as a waiver thereof, including without limitation any delay by the
Employee in delivering a Notice of Termination pursuant to Section 2 hereof
after an event has occurred which would, if the Employee had resigned, have
constituted a Termination upon a Change of Control pursuant to Section 1(p) (ii)
of this Agreement.

          19.  MISCELLANEOUS. All section headings are for convenience only.
This Agreement may be executed in several counterparts, each of which is an
original. It shall not be


                                       14

<PAGE>



necessary in making proof of this Agreement or any counterpart hereof to produce
or account for any of the other counterparts.


          IN WITNESS WHEREOF, the undersigned, intending to be legally bound,
have executed this Agreement as of the date first above written.


Attest:                                      ENTERRA CORPORATION



/s/ Steven W. Krablin                        By: /s/ Thomas S. McIntosh
- ------------------------------                  --------------------------------
          Secretary                             Thomas S. McIntosh
                                                President and Chief
                                                  Executive Officer

/s/ S. Waddell                                  /s/ E. C. Grimes
- ------------------------------                  --------------------------------
          Witness                               Edward C. Grimes


                                       15



<PAGE>



                               SEVERANCE AGREEMENT



          Agreement made as of February 8, 1990 between Enterra Corporation, a
Delaware corporation (the "Company"), and Steven W. Krablin (the "Employee").

          WHEREAS, the Employee is presently employed by the Company as its Vice
President, Controller and Treasurer;

          WHEREAS, the Company considers it essential to foster the employment
of well qualified key management personnel for the Company and its Subsidiaries,
and, in this regard, the board of directors of the Company recognizes that, as
is the case with many publicly held corporations, the possibility of a change in
control of the Company may exist and that such possibility, and the uncertainty
and questions which it may raise among management, may result in the departure
or distraction of key management personnel to the detriment of the Company;

          WHEREAS, the board of directors of the Company has determined that
appropriate steps should be taken to reinforce and encourage the continued
attention and dedication of key members of the management of the Company and its
Subsidiaries to their assigned duties without distraction in the face of
potentially disturbing circumstances arising from the possibility of a change in
control of the Company, although no such change is now contemplated; and

          WHEREAS, in order to induce the Employee to remain in the employ of
the Company, the Company agrees that the Employee shall receive the compensation
and benefits set forth in this Agreement in the event his employment with the
Company is terminated subsequent to a "Change of Control" (as defined in Section
1 hereof) of the Company as a cushion against the financial and career impact on
the Employee of any such Change of Control;

          NOW, THEREFORE, in consideration of the foregoing and the mutual
covenants and agreements hereinafter set forth and intending to be legally bound
hereby, the parties hereto agree as follows:

          1.   DEFINITIONS. For all purposes of this Agreement, the following
terms shall have the meanings specified in this Section unless the context
clearly otherwise requires:

          (a)  "Affiliate" and "Associate" shall have the respective meanings
ascribed to such terms in Rule 12b-2 of

<PAGE>



the General Rules and Regulations under the Securities Exchange Act of 1934, as
amended (the "Exchange Act").

          (b) "Base Salary" shall mean the total cash remuneration earned by the
Employee on an annualized basis in all capacities with the Company and its
Subsidiaries, including any compensation the payment of which has been deferred
pursuant to a salary reduction or deferral plan (including a 401(k) plan, other
than company matching contributions) or agreement, but exclusive of any cash
payments made to him under the Company's Bonus Plan, or any contributions made
for his benefit to the Company's 401(k) Plan or CRC-Evans Plan.

          (c)  A Person shall be deemed the "Beneficial Owner" of any
securities:

               (i)  that such Person or any of such Person's Affiliates or
          Associates, directly or indirectly, has the right to acquire (whether
          such right is exercisable immediately or only after the passage of
          time) pursuant to any agreement, arrangement or understanding (whether
          or not in writing) or upon the exercise of conversion rights, exchange
          rights, rights, warrants or options, or otherwise; PROVIDED, HOWEVER,
          that a Person shall not be deemed the "Beneficial Owner" of securities
          tendered pursuant to a tender or exchange offer made by such Person or
          any of such Person's Affiliates or Associates until such tendered
          securities are accepted for payment, purchase or exchange;

               (ii) that such Person or any of such Person's Affiliates or
          Associates, directly or indirectly, has the right to vote or dispose
          of or has "beneficial ownership" of (as determined pursuant to Rule
          13d-3 of the General Rules and Regulations under the Exchange Act),
          including without limitation pursuant to any agreement, arrangement or
          understanding, whether or not in writing; PROVIDED, HOWEVER, that a
          Person shall not be deemed the "Beneficial Owner" of any security
          under this subsection (ii) as a result of an oral or written
          agreement, arrangement or understanding to vote such security if such
          agreement, arrangement or understanding (A) arises solely from a
          revocable proxy given in response to a public proxy or consent
          solicitation made pursuant to, and in accordance with, the applicable
          provisions of the General Rules and Regulations under the Exchange
          Act, and (B) is not then reportable by


                                        2
<PAGE>



          such Person on Schedule 13D under the Exchange Act (or any comparable
          or successor report); or

               (iii) that are beneficially owned, directly or indirectly, by any
          other Person (or any Affiliate or Associate thereof) with which such
          Person (or any of such Person's Affiliates or Associates) has any
          agreement, arrangement or understanding (whether or not in writing)
          for the purpose of acquiring, holding, voting (except, pursuant to a
          revocable proxy as described in the proviso to subsection (ii) above
          or the May 2, 1986 option agreement between Shamrock Holdings, Inc.
          and the shareholders known as the "SGS Group" or their successors) or
          disposing of any voting securities of the Company;

PROVIDED, HOWEVER, that nothing in this Section 1(c) shall cause a Person
engaged in business as an underwriter of securities to be the "Beneficial Owner"
of any securities acquired through such Person's participation in good faith in
a firm commitment underwriting until the expiration of forty days after the date
of such acquisition.

          (d)  "Board" shall mean the board of directors of the Company.

          (e)  "Bonus Plan" shall mean the Company's Management Incentive Bonus
Plan, as in effect immediately prior to a Change of Control.

          (f)  "Change of Control" shall be deemed to have taken place if (i)
any Person (except the Company, any Subsidiary of the Company, any employee
benefit plan of the Company or of any Subsidiary of the Company, any Person or
entity organized, appointed or established by the Company for or pursuant to the
terms of any such employee benefit plan, or an Exempted Person), together with
all Affiliates and Associates of such Person acting in concert as described in
Section 14(d)(2) of the Exchange Act, shall become the Beneficial Owner in the
aggregate of 30% or more of the Common Stock of the Company then outstanding
within the meaning of Rule 13d-3 promulgated under the Exchange Act.

          (g)  "CRC-Evans Plan" shall mean the CRC-Evans Money Purchase Pension
Plan, as in effect immediately prior to a Change of Control.

          (h)  "Exempted Person" shall mean any of Shamrock Holdings of
California, Inc., a Delaware corporation ("Shamrock"), Shamrock Holdings, Inc.,
a Delaware corporation ("Shamrock Holdings"), or any Affiliate or


                                        3

<PAGE>



Associate of Shamrock or Shamrock Holdings.  "Exempted Person" shall not include
transferees from any Exempted Person except where such transferees are
Affiliates or Associates of Shamrock or Shamrock Holdings.

          (i)  "401(k) Plan" shall mean the Company's 401(k) Plan, as in effect
immediately prior to a Change of Control.

          (j)  "Normal Retirement Date" shall mean the first day of the calendar
month coincident with or next following the Employee's 65th birthday.

          (k)  "Person" shall mean any individual, firm, corporation,
Partnership or other entity.

          (l)  "Stock Plan" shall mean the Company's Stock Option Plan or any
successor plan thereto, as in effect immediately prior to a Change of Control.

          (m)  "Subsidiary" shall have the meaning ascribed to such term in Rule
12b-2 of the General Rules and Regulations under the Exchange Act.

          (n)  "Termination Date" shall mean the date of receipt of the Notice
of Termination described in Section 2 hereof or any later date Specified
therein, as the case may be.

          (o)  "Termination of Employment" shall mean the termination of the
Employee's actual employment relationship with the Company.

          (p)  "Termination upon a Change of Control" shall mean a Termination
of Employment upon or within two years after a Change of Control either:

               (i)  initiated by the Company for any reason other than (x) the
          Employee's continuous illness, injury or incapacity for a period of
          six consecutive months, (y) for "cause," which shall mean
          misappropriation of funds, habitual insobriety, substance abuse,
          conviction of a crime involving moral turpitude, or gross negligence
          in the performance of his duties, which gross negligence has had a
          material adverse effect on the business, operations, assets,
          properties or financial condition of the Company and its Subsidiaries
          taken as a whole, or (z) by reason of the occurrence of the Normal
          Retirement Date; or

               (ii) initiated by the Employee following one or more of the
          following occurrences:


                                        4

<PAGE>



                    (A)  a significant reduction by the Company or its
               Subsidiaries of the authority, duties or responsibilities of the
               Employee immediately prior to the Change of Control;

                    (B)  any removal of the Employee from or any failure to re-
               elect the Employee to the officer positions with the Company and
               its Subsidiaries held by him immediately prior to the Change of
               Control, except in connection with promotions to higher office or
               in connection with consolidations among the Company's
               Subsidiaries where the Employee is elected to similar positions
               in the successor company or companies;

                    (C)  a reduction by the Company in the Employee's Base
               Salary as in effect immediately prior to the Change of Control;

                    (D)  revocation or any modification (except as may be
               required in the normal course of business in light of any
               requirement of or change in federal law or regulations) of the
               Bonus Plan, 401(k) Plan or CRC-Evans Plan, or any action taken
               pursuant to the terms of such plans, which materially (x) reduces
               the opportunity to receive compensation under any of such plans
               of equivalent amounts received by the Employee during the two
               fiscal years immediately preceding the Change of Control, subject
               to the right of the Board to establish in a manner consistent
               with past practice prior to the Change of Control reasonable
               goals under such plans, (y) reduces the compensation payable to
               the Employee under any of such plans but which does not effect
               comparable reductions in the compensation payable to the other
               participants in such plans, or (z) increases the compensation
               payable to other participants in any of such plans but which does
               not effect corresponding increases in the amount of compensation
               payable to the Employee; or

                    (E)  a transfer of the Employee, without his express written
               consent, to a location which is outside the general metropolitan
               area in which his principal place of business immediately
               preceding the Change of Control may be located, or which is
               otherwise an


                                        5

<PAGE>



               unreasonable commuting distance from the Employee's principal
               residence at the date of the Change of Control.

          2.  NOTICE OF TERMINATION.  Any Termination upon a Change of Control
shall be communicated by a Notice of Termination to the other party hereto given
in accordance with Section 14 hereof. For purposes of this Agreement, a "Notice
of Termination" means a written notice which (i) indicates the specific
termination provision in this Agreement relied upon, (ii) briefly summarizes the
facts and circumstances deemed to provide a basis for termination of the
Employee's employment under the provision so indicated, and (iii) if the
termination date is other than the date of receipt of such notice, specifies the
termination date (which date shall not be more than 15 days after the giving of
such notice).

          3.   SEVERANCE COMPENSATION UPON TERMINATION.

          (a) Subject to the provisions of Section 10 hereof and to adjustment
as provided in paragraph (b) below and Section 9(a), in the event of the
Employee's Termination upon a Change of Control, the Company shall pay to the
Employee, within fifteen days after the Termination Date (or as soon as possible
thereafter in the event that the procedures set forth in Section 10(b) hereof
cannot be completed within 15 days), an amount in cash equal to two times the
sum of paragraphs (i) and (ii) below:

               (i)  The Employee's Base Salary in effect either immediately
          prior to the Termination of Employment or immediately prior to the
          Change of Control, whichever is higher; and

               (ii) The average of the annual bonuses earned by the Employee
          under the Bonus Plan in the two fiscal years immediately prior to such
          Termination of Employment.

          (b) In the event the Employee's Normal Retirement Date would occur
prior to twenty-four months after the Termination Date, the aggregate cash
amount determined as set forth in (a) above shall be reduced by multiplying it
by a fraction, the numerator of which shall be the number of days from the
Termination Date to the Employee's Normal Retirement Date and the denominator of
which shall be 730.  No payments shall be due Employee in the event that the
Normal Retirement Date has been reached prior to the Termination Date.


                                        6
<PAGE>



          4.   OTHER PAYMENTS. Subject to the provisions of Section 10 hereof,
in the event of the Employee's Termination upon a Change of Control, the Company
shall:

          (a) pay to the Employee within fifteen days after the Termination
Date, unless the Employee has exercised such options and rights, an amount equal
to the excess, if any, of the aggregate fair market value of the shares of the
Company's Common Stock subject to all stock options and stock appreciation
rights outstanding and unexercised immediately prior to the Termination Date,
whether vested or unvested, granted to the Employee under the Stock Plan, over
the aggregate exercise price of all such stock options. For purposes of this
paragraph, fair market value shall mean the highest of (x) the closing price of
the Company's Common Stock on the business day immediately preceding the
Termination Date, if such Common Stock is publicly traded at such date, (y) if
such Common Stock is not publicly traded at the Termination Date, the value
determined by an independent appraiser, such appraiser to be selected by the
Employee and to be reasonably satisfactory to the Company (the fees and expenses
of such appraiser to be borne by the Company), or (z) the highest per share
price of the Company's Common Stock paid (in connection with the Change of
Control or at any time thereafter) by the Person or group whose acquisition of
shares of Common Stock of the Company has given rise to a Change of Control;

          (b) to the extent permitted by applicable law, continue or cause to be
continued until 24 months after the Termination Date, on the cost-sharing basis
(if any) in effect immediately prior to the Change of Control, medical, dental
and life insurance benefits (and, at the option of the Employee, disability
insurance benefits) substantially equivalent in all material respects to those
furnished by the Company and its Subsidiaries to the Employee immediately prior
to the Change of Control; PROVIDED, HOWEVER, that if the Employee's Normal
Retirement Date would have occurred prior to 24 months after the Termination
Date, the obligation of the Company to provide such benefits shall cease at the
Employee's Normal Retirement Date; and PROVIDED FURTHER, HOWEVER, that the
obligation of the Company to provide such benefits shall cease at such time as
the Employee is employed on a full time basis by a corporation not owned or
controlled by the Employee that provides the Employee, on substantially the same
cost-sharing basis (if any) between the Company and the Employee in effect
immediately prior to the Change of Control, with medical, dental, life and
disability insurance benefits substantially equivalent in all material respects
to those furnished by the Company and its Subsidiaries to the Employee
immediately prior to the Change of Control;


                                        7

<PAGE>



          (c)  for vesting purposes only, in the event of a Termination upon a
Change of Control occurring prior to the Normal Retirement Date, credit the
Employee with the lesser of (i) two additional "years of service" (as defined in
the Company's 401(k) Plan) or (ii) the period of time from the Termination Date
to the Normal Retirement Date under each of the Company's 401(k) Plan and CRC-
Evans Plan, in addition to the years of service that would have otherwise been
calculated by reference solely to the Termination Date, it being understood that
benefits in respect of the two additional years of service shall be paid to the
Employee under the Company's 401(k) Plan or CRC-Evans Plan, and that the Company
shall, to the extent necessary to provide the Employee the additional benefits
intended hereby, amend the 401(k) Plan or CRC-Evans Plan or pay such additional
benefits outside the plan as may be necessary; and

          (d)  permit the Employee to continue the use of his Company car, if
any, without any cost for a period of six months thereafter.  Thereafter, the
Employee shall return the car to the Company unless, in the case of a car owned
by the Company, the Employee elects to purchase the car from the Company at the
net book value thereof at the date of the purchase or, in the case of a car
leased by the Company, the Employee pays the Company, as such amounts become due
and payable, all rental payments charged to the Company for the use of such car
for the remainder of the lease therefore.

          5.   VESTING AND ACCELERATION OF CERTAIN BENEFITS. In the event of a
Termination upon a Change of Control, and subject to the provisions of Section
10 hereof, all restrictions remaining on the Termination Date on the restricted
shares, if any, received by the Employee, pursuant to the Stock Plan shall
lapse, and said shares shall thereupon be owned by the Employee free and clear
of all restrictions of any nature whatsoever, except those, if any, under
applicable federal and state securities laws.

          6.   ENFORCEMENT.

          (a) In the event that the Company shall fail or refuse to make payment
of any amounts due the Employee under Sections 3, 4 and 5 hereof within the
respective time periods provided therein, the Company shall pay to the Employee,
in addition to the payment of any other sums provided in this Agreement,
interest, compounded daily, on any amount remaining unpaid from the date payment
is required under Section 3, 4 or 5, as appropriate, until paid to the Employee,
at the rate from time to time announced by Wells Fargo Bank, N.A. as its "prime
rate" plus 2%, each change in such rate to take effect on the effective date of
the change in such prime rate.


                                        8
<PAGE>



          (b)  It is the intent of the parties that the Employee not be required
to incur any expenses associated with the enforcement of his rights under this
Agreement by arbitration, litigation or other legal action because the cost and
expense thereof would substantially detract from the benefits intended to be
extended to the Employee hereunder. Accordingly, the Company shall pay the
Employee on demand the amount necessary to reimburse the Employee in full for
all expenses (including all attorneys' fees and legal expenses) incurred by the
Employee in enforcing any of the obligations of the Company under this
Agreement.

          7.   NO MITIGATION. The Employee shall not be required to mitigate the
amount of any payment or benefit provided for in this Agreement by seeking other
employment or otherwise.

          8.   NON-EXCLUSIVITY OF RIGHTS. Nothing in this Agreement shall
prevent or limit the Employee's continuing or future participation in or rights
under any benefit, bonus, incentive or other plan or program provided by the
Company or any of its Subsidiaries or Affiliates and for which the Employee may
qualify.

          9.   COORDINATION OF BENEFITS; NO SET-OFF; TAXES.

          (a)  The severance plan or policy, if any, applicable to employees of
Enterra or the Subsidiary which employs the Employee, and any other severance
payments required by applicable statutes or provided under government programs
may provide compensation and benefits to Employee upon events which also
constitute a Termination upon a Change of Control as defined in this Agreement.
In such event, Employee shall be entitled only to the largest cash compensation
provided for under any of such agreements, plans, policies, statutes or programs
and the maximum benefit continuance provided for under any of such agreements,
plans, policies, statues or programs, and the payments referred to in Section 3
hereof shall be reduced to the extent necessary to effect such coordination of
benefits.

          (b)  Except as specifically set forth in (a) above, the Company's
obligation to make the payments provided for in this Agreement and otherwise to
perform its obligations hereunder shall not be affected by any circumstances,
including, without limitation, any set-off, counterclaim, recoupment, defense or
other right which the Company may have against the Employee or others.

          (c)  Employee alone, and not the Company or any Subsidiary, shall be
responsible for the payment of all


                                        9

<PAGE>



federal, state and local taxes in respect of the payments to be made and
benefits to be provided under this Agreement.



          10.  CERTAIN REDUCTION OF PAYMENTS.

          (a)  Anything in this Agreement to the contrary notwithstanding, in
the event that it shall be determined as set forth herein that any payment or
distribution by the Company to or for the benefit of the Employee, whether paid
or payable or distributed or distributable pursuant to the terms of this
Agreement or otherwise (a "Payment"), would constitute an "excess parachute
payment" within the meaning of Section 280G of the Internal Revenue Code of
1986, as amended (the "Code"), and that it would be economically advantageous to
the Company to reduce the Payment to avoid or reduce the taxation of excess
parachute payments under Section 4999 of the Code, the aggregate present value
of amounts payable or distributable to or for the benefit of the Employee
pursuant to this Agreement (such payments or distributions pursuant to this
Agreement are hereinafter referred to as "Agreement Payments") shall be reduced
(but not below zero) to the Reduced Amount. The "Reduced Amount" shall be an
amount expressed in present value which maximizes the aggregate present value of
Agreement Payments without causing any Payment to be subject to the taxation
under Section 4999 of the Code. For purposes of this Section 10, present value
shall be determined in accordance with Section 280G(d)(4) of the Code.

          (b)  All determinations to be made under this Section 10 shall be made
by Peat Marwick Main & Co., or the Company's independent public accountant
immediately prior to the Change of Control if other than Peat Marwick Main & Co.
(the "Accounting Firm"), which firm shall use its best efforts to provide its
determinations and any supporting calculations both to the Company and the
Employee within 10 days of the Termination Date. Any such determination by the
Accounting Firm shall be binding upon the Company and the Employee. The Company
shall in its sole discretion determine which and how much of the Agreement
Payments shall be eliminated or reduced consistent with the requirements of this
Section 10. Within five days after the Company's determination, the Company
shall pay (or cause to be paid) or distribute (or cause to be distributed) to or
for the benefit of the Employee such amounts as are then due to the Employee
under this Agreement.

          (c)  As a result of the uncertainty in the application of Section 280G
of the Code at the time of the initial determination by the Accounting Firm
hereunder, it is


                                       10

<PAGE>



possible that Agreement Payments, as the case may be, will have been made by the
Company which should not have been made ("Overpayment") or that additional
Agreement Payments which have not been made by the Company could have been made
("Underpayment"), in each case, consistent with the calculations required to be
made hereunder. Within two years after the Termination of Employment, the
Accounting Firm shall review the determination made by it pursuant to the
preceding paragraph. In the event that the Accounting Firm determines that an
Overpayment has been made, any such Overpayment shall be treated for all
purposes as a loan to the Employee which the Employee shall repay to the Company
together with interest at the applicable Federal rate provided for in Section
7872(f) (2) of the Code (the "Federal Rate"); PROVIDED, HOWEVER, that no amount
shall be payable by the Employee to the Company if and to the extent such
payment would not reduce the amount which is subject to taxation under Section
4999 of the Code. In the event that the Accounting Firm determines that an
Underpayment has occurred, any such Underpayment shall be promptly paid by the
Company to or for the benefit of the Employee together with interest at the
Federal Rate.

          (d)  All of the fees and expenses of the Accounting Firm in performing
the determinations referred to in subsections (b) and (c) above shall be borne
solely by the Company. The Company agrees to indemnify and hold harmless the
Accounting Firm of and from any and all claims, damages and expenses of any
nature resulting from or relating to its determinations pursuant to subsections
(b) and (c) above, except for claims, damages or expenses resulting from the
gross negligence or willful misconduct of the Accounting Firm.

          11.  SETTLEMENT OF ALL DISPUTES.

          (a)  Any dispute, controversy or claim arising out of or relating to
any provision of this Agreement or the Employee's Termination upon a Change of
Control shall be settled by arbitration in the City of Houston, Texas, in
accordance with the commercial arbitration rules then in effect of the American
Arbitration Association, before a panel of three arbitrators, two of whom shall
be selected by the Company and the Employee, respectively, and the third of whom
shall be selected by the other two arbitrators. Each arbitrator selected as
provided herein is required to be or have been a director or an executive
officer of a corporation whose shares of common stock were listed during at
least one year of such service on the New York Stock Exchange or the American
Stock Exchange or quoted on the National Association of Securities Dealers
Automated Quotations System. Any award entered by the arbitrators shall be
final, binding and


                                       11

<PAGE>



nonappealable and judgment may be entered thereon by any party in accordance
with applicable law in any court of competent jurisdiction. This arbitration
provision shall be specifically enforceable. The fees of the American
Arbitration Association and the arbitrators and any expenses relating to the
conduct of the arbitration shall be paid by the Company.

          (b)  The party or parties challenging the right of the Employee to the
benefits of this Agreement shall in all circumstances have the burden of proof.

          12.  TERM OF AGREEMENT. This Agreement shall commence as of the date
first written above and shall continue in effect until the earlier of (i) the
date upon which the Employee ceases to be in the employ of the Company or any
Subsidiary thereof for any reason other than a Termination Upon a Change of
Control, or (ii) 24 months after a Change of Control has occurred, PROVIDED,
HOWEVER, that all of the obligations of the parties hereunder arising after a
Change of Control shall continue in effect until such obligations are satisfied
or have expired.

          13.  SUCCESSOR COMPANY. The Company shall require any successor or
successors (whether direct or indirect, by purchase, merger, consolidation or
otherwise) to all or substantially all of the business and/or assets of the
Company, by agreement in form and substance satisfactory to the Employee, to
acknowledge expressly that this Agreement is binding upon and enforceable
against the Company in accordance with the terms hereof, and to become jointly
and severally obligated with the Company to perform this Agreement in the same
manner and to the same extent that the Company would be required to perform if
no such succession or successions had taken place. Failure of the Company to
obtain such agreement prior to the effectiveness of any such succession shall be
a breach of this Agreement. As used in this Agreement, the Company shall mean
the Company as hereinbefore defined and any such successor or successors to its
business and/or assets, jointly and severally.

          14.  NOTICE. All notices and other communications required or
permitted hereunder or necessary or convenient in connection herewith shall be
in writing and shall be delivered personally or mailed by registered or
certified mail, return receipt requested, or by overnight express courier
service, as follows:

          If to the Company, to:

          Enterra Corporation
          2707 North Loop West


                                       12

<PAGE>



          Suite 1050
          Houston, TX 77008
          Attention:  The Chairman


          With a required copy to:

          Morgan, Lewis & Bockius
          2000 One Logan Square
          Philadelphia, PA  19103
          Attention:  David R. King, Esq.


          If to the Employee, to:

          Steven W. Krablin
          5611 Theall Road
          Houston, TX 77066

or to such other names or addresses as the Company or the Employee, as the case
may be, shall designate by notice to the other party hereto in the manner
specified in this Section. Any such notice shall be deemed delivered and
effective when received in the case of personal delivery, five days after
deposit, postage prepaid, with the U.S. Postal Service in the case of registered
or certified mail, or on the next business day in the case of overnight express
courier service.

          15.  GOVERNING LAW. THIS AGREEMENT SHALL BE GOVERNED BY AND
INTERPRETED UNDER THE LAWS OF THE STATE OF DELAWARE WITHOUT GIVING EFFECT TO ANY
CONFLICT OF LAWS PROVISIONS.

          16.  CONTENTS OF AGREEMENT, AMENDMENT AND ASSIGNMENT.

          (a)  This Agreement supersedes all prior agreements and sets forth the
entire understanding between the parties hereto with respect to the subject
matter hereof and cannot be changed, modified, extended or terminated except
upon written amendment executed by the Employee and approved by the board and
executed on the Company's behalf by a duly authorized officer.  The provisions
of this Agreement may provide for payments to the Employee under certain
compensation or bonus plans (including without limitation the Stock Plan, the
Bonus Plan, the 401(k) Plan and the CRC-Evans Plan) under circumstances where
such plans would not provide for payment thereof. It is the specific intention
of the parties that the provisions of this Agreement shall supersede any
provisions to the contrary in such plans, and such plans shall be deemed to have
been amended to correspond with this


                                       13

<PAGE>



Agreement without further action by the Company or the Board.

          (b)  Nothing in this Agreement shall be construed as giving the
Employee any right to be retained in the employ of the Company or any of its
Subsidiaries.

          (c)  The Employee acknowledges that from time to time, the Company and
its subsidiaries may establish, maintain and distribute employee manuals or
handbooks or personnel policy manuals, and officers or other representatives of
the Company or its Subsidiaries may make written or oral statements relating to
personnel policies and procedures. Such manuals, handbooks and statements are
intended only for general guidance. No policies, procedures or statements of any
nature by or on behalf of the Company or its Subsidiaries (whether written or
oral, and whether or not contained in any employee manual or handbook or
personnel policy manual), and no acts or practices of any nature, shall be
construed to modify this Agreement.

          (d)  All of the terms and provisions of this Agreement shall be
binding upon and inure to the benefit of and be enforceable by the respective
heirs, representatives, successors and assigns of the parties hereto, except
that the duties and responsibilities of the Employee and the Company hereunder
shall not be assignable in whole or in part by the Company.

          17.  SEVERABILITY. If any provision of this Agreement or application
thereof to anyone or under any circumstances shall be determined to be invalid
or unenforceable, such invalidity or unenforceability shall not affect any other
provisions or applications of this Agreement which can be given effect without
the invalid or unenforceable provision or application.

          18.  REMEDIES CUMULATIVE - NO WAIVER. No right conferred upon the
Employee by this Agreement is intended to be exclusive of any other right or
remedy, and each and every such right or remedy shall be cumulative and shall be
in addition to any other right or remedy given hereunder or now or hereafter
existing at law or in equity. No delay or omission by the Employee in exercising
any right, remedy or power hereunder or existing at law or in equity shall be
construed as a waiver thereof, including without limitation any delay by the
Employee in delivering a Notice of Termination pursuant to Section 2 hereof
after an event has occurred which would, if the Employee had resigned, have
constituted a Termination upon a Change of Control pursuant to Section 1(p) (ii)
of this Agreement.


                                       14

<PAGE>



          19.  MISCELLANEOUS. All section headings are for convenience only.
This Agreement may be executed in several counterparts, each of which is an
original. It shall not be necessary in making proof of this Agreement or any
counterpart hereof to produce or account for any of the other counterparts.


          IN WITNESS WHEREOF, the undersigned, intending to be legally bound,
have executed this Agreement as of the date first above written.


Attest:                                      ENTERRA CORPORATION

/s/ Steven C. Grant                          By: /s/ Thomas S. McIntosh
- ------------------------------                  ------------------------------
          Secretary                             Thomas S. McIntosh
                                                President and Chief
                                                  Executive Officer

/s/ Gay Mather                               /s/ Steven W. Krablin
- ------------------------------               ---------------------------------
           Witness                           Steven W. Krablin


                                       15



<PAGE>



                               SEVERANCE AGREEMENT



     Agreement made as of November 10, 1993 between Enterra Corporation, a
Delaware corporation (the "Company"), and Windell D. Norris, Jr. (the
"Employee").

     WHEREAS, the Employee is presently employed by CRC-Evans Pipeline
International, Inc., a "Subsidiary" (as defined in Section 1 hereof), as its
Executive Vice President;

     WHEREAS, the Company considers it essential to foster the employment of
well qualified key management personnel for the Company and its Subsidiaries,
and, in this regard, the board of directors of the Company recognizes that, as
is the case with many publicly held corporations, the possibility of a change in
control of the Company may exist and that such possibility, and the uncertainty
and questions which it may raise among management, may result in the departure
or distraction of key management personnel to the detriment of the Company;

     WHEREAS, the board of directors of the Company has determined that
appropriate steps should be taken to reinforce and encourage the continued
attention and dedication of key members of the management of the Company and its
Subsidiaries to their assigned duties without distraction in the face of
potentially disturbing circumstances arising from the possibility of a change in
control of the Company, although no such change is now contemplated; and

     WHEREAS, in order to induce the Employee to remain in the employ of the
Subsidiary, the Company agrees that the Employee shall receive the compensation
and benefits set forth in this Agreement in the event his employment with the
Company is terminated subsequent to a "Change of Control" (as defined in Section
l hereof) of the Company as a cushion against the financial and career impact on
the Employee of any such Change of Control;

     NOW, THEREFORE, in consideration of the foregoing and the mutual covenants
and agreements hereinafter set forth and intending to be legally bound hereby,
the parties hereto agree as follows:

     l.   DEFINITIONS. For all purposes of this Agreement, the following terms
shall have the meanings

<PAGE>



specified in this Section unless the context clearly otherwise requires:

          (a) "Affiliate" and "Associate" shall have the respective meanings
ascribed to such terms in Rule 12b-2 of the General Rules and Regulations under
the Securities Exchange Act of 1934, as amended (the "Exchange Act").

          (b) "Base Salary" shall mean the total cash remuneration earned by the
Employee on an annualized basis in all capacities with the Company and its
Subsidiaries, including any compensation the payment of which has been deferred
pursuant to a salary reduction or deferral plan (including a 401(k) plan, other
than company matching contributions) or agreement, but exclusive of any cash
payments made to him under the Company's Bonus Plan, or any contributions made
for his benefit to the Company's 401(k) Plan or CRC-Evans Plan.

          (c)  A Person shall be deemed the "Beneficial Owner" of any
securities:

               (i)  that such Person or any of such Person's Affiliates or
     Associates, directly or indirectly, has the right to acquire (whether such
     right is exercisable immediately or only after the passage of time)
     pursuant to any agreement, arrangement or understanding (whether or not in
     writing) or upon the exercise of conversion rights, exchange rights,
     rights, warrants or options, or otherwise; PROVIDED, HOWEVER, that a Person
     shall not be deemed the "Beneficial Owner" of securities tendered pursuant
     to a tender or exchange offer made by such Person or any of such Person's
     Affiliates or Associates until such tendered securities are accepted for
     payment, purchase or exchange;

               (ii) that such Person or any of such Person's Affiliates or
     Associates, directly or indirectly, has the right to vote or dispose of or
     has "beneficial ownership" of (as determined pursuant to Rule 13d-3 of the
     General Rules and Regulations under the Exchange Act), including without
     limitation pursuant to any agreement, arrangement or understanding, whether
     or not in writing; PROVIDED, HOWEVER, that a Person shall not be deemed the
     "Beneficial Owner" of any security under this subsection (ii) as a result
     of an oral or written agreement, arrangement or understanding to vote such
     security if such agreement, arrangement or understanding (A) arises solely
     from a revocable


                                        2

<PAGE>



          proxy given in response to a public proxy or consent solicitation made
          pursuant to, and in accordance with, the applicable provisions of the
          General Rules and Regulations under the Exchange Act, and (B) is not
          then reportable by such Person on Schedule 13D under the Exchange Act
          (or any comparable or successor report); or

               (iii) that are beneficially owned, directly or indirectly, by any
          other Person (or any Affiliate or Associate thereof) with which such
          Person (or any of such Person's Affiliates or Associates) has any
          agreement, arrangement or understanding (whether or not in writing)
          for the purpose of acquiring, holding, voting (except, pursuant to a
          revocable proxy as described in the proviso to subsection (ii) above
          or disposing of any voting securities of the Company;

PROVIDED, HOWEVER, that nothing in this Section 1(c) shall cause a Person
engaged in business as an underwriter of securities to be the "Beneficial Owner"
of any securities acquired through such Person's participation in good faith in
a firm commitment underwriting until the expiration of forty days after the date
of such acquisition.

          (d)  "Board" shall mean the board of directors of the Company.

          (e)  "Bonus Plan" shall mean the Company's Management Incentive Bonus
Plan, as in effect immediately prior to a Change of Control.

          (f)  "Change of Control" shall be deemed to have taken place if any
Person (except the Company, any Subsidiary of the Company, any employee benefit
plan of the Company or of any subsidiary of the Company, any Person or entity
organized, appointed or established by the Company for or pursuant to the terms
of any such employee benefit plan, or an Exempted Person), together with all
Affiliates and Associates of such Person acting in concert as described in
Section 14(d) (2) of the Exchange Act, shall become the Beneficial Owner in the
aggregate of 30% or more of the Common Stock of the Company then outstanding
within the meaning of Rule 13d-3 promulgated under the Exchange Act.

          (g)  "CRC-Evans Plan" shall mean the CRC-Evans Money Purchase Pension
Plan, as in effect immediately prior to a Change of Control.

          (h)  "401(k) Plan" shall mean the Company's 401(k) Plan, as in effect
immediately prior to a Change of Control.


                                        3

<PAGE>



          (i)  "Normal Retirement Date" shall mean the first day of the calendar
month coincident with or next following the Employee's 65th birthday.

          (j)  "Person" shall mean any individual, firm, corporation,
partnership or other entity.

          (k)  "Stock Plan" shall mean the Company's Stock Option Plan or any
successor plan thereto, as in effect immediately prior to a Change of Control.

          (l)  "Subsidiary" shall have the meaning ascribed to such term in Rule
12b-2 of the General Rules and Regulations under the Exchange Act.

          (m)  "Termination Date" shall mean the date of receipt of the Notice
of Termination described in Section 2 hereof or any later date specified
therein, as the case may be.

          (n)  "Termination of Employment" shall mean the termination of the
Employee's actual employment relationship with the Company.

          (o)  "Termination upon a Change of Control" shall mean a Termination
of Employment upon or within two years after a Change of Control either:

               (i)  initiated by the Company for any reason other than (x) the
     Employee's continuous illness, injury or incapacity for a period of six
     consecutive months, (y) for "cause," which shall mean misappropriation of
     funds, habitual insobriety, substance abuse, conviction of a crime
     involving moral turpitude, or gross negligence in the performance of his
     duties, which gross negligence has had a material adverse effect on the
     business, operations, assets, properties or financial condition of the
     Company and its Subsidiaries taken as a whole, or (z) by reason of the
     occurrence of the Normal Retirement Date; or

               (ii) initiated by the Employee following one or more of the
     following occurrences:

                    (A)  a significant reduction by the Company or its
               Subsidiaries of the authority, duties or responsibilities of the
               Employee immediately prior to the Change of Control;

                    (B)  any removal of the Employee from or any failure to
               re-elect the Employee to the


                                        4

<PAGE>



               officer positions with the Company and its Subsidiaries held by
               him immediately prior to the Change of Control, except in
               connection with promotions to higher office or in connection with
               consolidations among the Company's Subsidiaries where the
               Employee is elected to similar positions in the successor company
               or companies;

                    (C)  a reduction by the Company in the Employee's Base
               Salary as in effect immediately prior to the Change of Control;

                    (D)  revocation or any modification (except as may be
               required in the normal course of business in light of any
               requirement of or change in federal law or regulations) of the
               Bonus Plan, 401(k) Plan or CRC-Evans Plan, or any action taken
               pursuant to the terms of such plans, which materially (x) reduces
               the opportunity to receive compensation under any of such plans
               of equivalent amounts received by the Employee during the two
               fiscal years immediately preceding the Change of Control, subject
               to the right of the Board to establish in a manner consistent
               with past practice prior to the Change of Control reasonable
               goals under such plans, (y) reduces the compensation payable to
               the Employee under any of such plans but which does not effect
               comparable reductions in the compensation payable to the other
               participants in such plans, or (z) increases the compensation
               payable to other participants in any of such plans but which does
               not effect corresponding increases in the amount of compensation
               payable to the Employee; or

                    (E)  a transfer (other than a transfer to the metropolitan
               Tulsa, Oklahoma area as contemplated by Section 1.3 of that
               Employment Agreement dated as of January 1, 1993 between the
               Employee and CRC-Evans Pipeline International, Inc.) of the
               Employee, without his express written consent, to a location
               which is outside the general metropolitan area in which his
               principal place of business immediately preceding the Change of
               Control may be located, or which is otherwise an unreasonable
               commuting distance from the Employee's principal residence at the
               date of the Change of Control.


                                        5
<PAGE>



          2.   NOTICE OF TERMINATION.  Any Termination upon a Change of Control
shall be communicated by a Notice of Termination to the other party hereto given
in accordance with Section 14 hereof. For purposes of this Agreement, a "Notice
of Termination" means a written notice which (i) indicates the specific
termination provision in this Agreement relied upon, (ii) briefly summarizes the
facts and circumstances deemed to provide a basis for termination of the
Employee's employment under the provision so indicated, and (iii) if the
termination date is other than the date of receipt of such notice, specifies the
termination date (which date shall not be more than 15 days after the giving of
such notice).

          3.   SEVERANCE COMPENSATION UPON TERMINATION.

          (a)  Subject to the provisions of Section 10 hereof and to adjustment
as provided in paragraph (b) below and Section 9(a), in the event of the
Employee's Termination upon a Change of Control, the Company shall pay to the
Employee, within fifteen days after the Termination Date (or as soon as possible
thereafter in the event that the procedures set forth in Section 10(b) hereof
cannot be completed within 15 days), an amount in cash equal to two times the
sum of paragraphs (i) and (ii) below:

               (i)  The Employee's Base Salary in effect either immediately
          prior to the Termination of Employment or immediately prior to the
          Change of Control, whichever is higher; and

               (ii) The average of the annual bonuses earned by the Employee
          under the Bonus Plan in the two fiscal years immediately prior to such
          Termination of Employment.

          (b)  In the event the Employee's Normal Retirement Date would occur
prior to twenty-four months after the Termination Date, the aggregate cash
amount determined as set forth in (a) above shall be reduced by multiplying it
by a fraction, the numerator of which shall be the number of days from the
Termination Date to the Employee's Normal Retirement Date and the denominator of
which shall be 730.  No payments shall be due Employee in the event that the
Normal Retirement Date has been reached prior to the Termination Date.

          4.   OTHER PAYMENTS. Subject to the provisions of Section 10 hereof,
in the event of the Employee's Termination upon a Change of Control, the Company
shall:

          (a)  pay to the Employee within fifteen days after the Termination
Date, unless the Employee has exercised such


                                        6

<PAGE>



options and rights, an amount equal to the excess, if any, of the aggregate fair
market value of the shares of the Company's Common Stock subject to all stock
options and stock appreciation rights outstanding and unexercised immediately
prior to the Termination Date, whether vested or unvested, granted to the
Employee under the Stock Plan, over the aggregate exercise price of all such
stock options. Upon such payment, such options or rights shall terminate.  For
purposes of this paragraph, fair market value shall mean the highest of (x) the
closing price of the Company's Common Stock on the business day immediately
preceding the Termination Date, if such Common Stock is publicly traded at such
date, (y) if such Common stock is not publicly traded at the Termination Date,
the value determined by an independent appraiser, such appraiser to be selected
by the Employee and to be reasonably satisfactory to the Company (the fees and
expenses of such appraiser to be borne by the Company), or (z) the highest per
share price of the Company's Common Stock paid (in connection with the Change of
Control or at any time thereafter) by the Person or group whose acquisition of
shares of Common Stock of the Company has given rise to a Change of Control;

          (b)  to the extent permitted by applicable law, continue or cause to
be continued until 24 months after the Termination Date, on the cost-sharing
basis (if any) in effect immediately prior to the Change of Control, medical,
dental and life insurance benefits (and, at the option of the Employee,
disability insurance benefits) substantially equivalent in all material respects
to those furnished by the Company and its Subsidiaries to the Employee
immediately prior to the Change of Control; PROVIDED, HOWEVER, that if the
Employee's Normal Retirement Date would have occurred prior to 24 months after
the Termination Date, the obligation of the Company to provide such benefits
shall cease at the Employee's Normal Retirement Date; and PROVIDED FURTHER,
HOWEVER, that the obligation of the Company to provide such benefits shall cease
at such time as the Employee is employed on a full time basis by a corporation
not owned or controlled by the Employee that provides the Employee, on
substantially the same cost-sharing basis (if any) between the Company and the
Employee in effect immediately prior to the Change of Control, with medical,
dental, life and disability insurance benefits substantially equivalent in all
material respects to those furnished by the Company and its Subsidiaries to the
Employee immediately prior to the Change of Control;

          (c)  for vesting purposes only, in the event of a Termination upon a
Change of Control occurring prior to the Normal Retirement Date, credit the
Employee with the lesser of (i) two additional "years of service" (as defined in
the Company's 401(k) Plan) or (ii) the period of time from the


                                        7

<PAGE>



Termination Date to the Normal Retirement Date under each of the Company's
401(k) Plan and CRC-Evans Plan, in addition to the years of service that would
have otherwise been calculated by reference solely to the Termination Date, it
being understood that benefits in respect of the two additional years of service
shall be paid to the Employee under the Company's 401(k) Plan or CRC-Evans Plan,
and that the Company shall, to the extent necessary to provide the Employee the
additional benefits intended hereby, amend the 401(k) Plan or CRC-Evans Plan or
pay such additional benefits outside the plan as may be necessary; and

          (d)  permit the Employee to receive any car allowance or continue the
use of his Company car, if any, without any cost for a period of six months
thereafter. Thereafter, the Employee shall return the car to the Company unless,
in the case of a car owned by the Company, the Employee elects to purchase the
car from the Company at the net book value thereof at the date of the purchase
or, in the case of a car leased by the Company, the Employee pays the Company,
as such amounts become due and payable, all rental payments charged to the
Company for the use of such car for the remainder of the lease therefor.

          5.   VESTING AND ACCELERATION OF CERTAIN BENEFITS. In the event of a
Termination upon a Change of Control, and subject to the provisions of Section
10 hereof, all restrictions remaining on the Termination Date on the restricted
shares, if any, received by the Employee, pursuant to the Stock Plan shall
lapse, and said shares shall thereupon be owned by the Employee free and clear
of all restrictions of any nature whatsoever, except those, if any, under
applicable federal and state securities laws.

          6.   ENFORCEMENT.

          (a)  In the event that the Company shall fail or refuse to make
payment of any amounts due the Employee under Sections 3, 4 and 5 hereof within
the respective time periods provided therein, the Company shall pay to the
Employee, in addition to the payment of any other sums provided in this
Agreement, interest, compounded daily, on any amount remaining unpaid from the
date payment is required under Section 3, 4 or 5, as appropriate, until paid to
the Employee, at the rate from time to time announced by Wells Fargo Bank, N.A.
as its "prime rate" plus 2%, each change in such rate to take effect on the
effective date of the change in such prime rate.

          (b)  It is the intent of the parties that the Employee not be required
to incur any expenses associated with the enforcement of his rights under this
Agreement by


                                        8

<PAGE>



arbitration, litigation or other legal action because the cost and expense
thereof would substantially detract from the benefits intended to be extended to
the Employee hereunder. Accordingly, the Company shall pay the Employee on
demand the amount necessary to reimburse the Employee in full for all expenses
(including all attorneys' fees and legal expenses) incurred by the Employee in
enforcing any of the obligations of the Company under this Agreement.

          7.   NO MITIGATION. The Employee shall not be required to mitigate the
amount of any payment or benefit provided for in this Agreement by seeking other
employment or otherwise.

          8.   NON-EXCLUSIVITY OF RIGHTS. Nothing in this Agreement shall
prevent or limit the Employee's continuing or future participation in or rights
under any benefit, bonus, incentive or other plan or program provided by the
Company or any of its Subsidiaries or Affiliates and for which the Employee may
qualify.

          9.   COORDINATION OF BENEFITS; NO SET-OFF; TAXES.

          (a)  The severance plan or policy, if any, applicable to employees of
Enterra or the Subsidiary which employs the Employee, and any other severance
payments required by employment agreements or applicable statutes or provided
under government programs may provide compensation and benefits to Employee upon
events which also constitute a Termination upon a Change of Control as defined
in this Agreement.  In such event, Employee shall be entitled only to the
largest cash compensation provided for under any of such agreements, plans,
policies, statutes or programs and the maximum benefit continuance provided for
under any of such agreements, plans, policies, statues or programs, and the
payments referred to in Section 3 hereof shall be reduced to the extent
necessary to effect such coordination of benefits.

          (b)  Except as specifically set forth in (a) above, the Company's
obligation to make the payments provided for in this Agreement and otherwise to
perform its obligations hereunder shall not be affected by any circumstances,
including, without limitation, any set-off, counterclaim, recoupment, defense or
other right which the Company may have against the Employee or others.

          (c)  Employee alone, and not the Company or any Subsidiary, shall be
responsible for the payment of all federal, state and local taxes in respect of
the payments to be made and benefits to be provided under this Agreement.

          10.  CERTAIN REDUCTION OF PAYMENTS.


                                        9

<PAGE>



          (a)  Anything in this Agreement to the contrary notwithstanding, in
the event that it shall be determined as set forth herein that any payment or
distribution by the Company to or for the benefit of the Employee, whether paid
or payable or distributed or distributable pursuant to the terms of this
Agreement or otherwise (a "Payment"), would constitute an "excess parachute
payment" within the meaning of Section 280G of the Internal Revenue Code of
1986, as amended (the "Code"), and that it would be economically advantageous to
the Company to reduce the Payment to avoid or reduce the taxation of excess
parachute payments under Section 4999 of the Code, the aggregate present value
of amounts payable or distributable to or for the benefit of the Employee
pursuant to this Agreement (such payments or distributions pursuant to this
Agreement are hereinafter referred to as "Agreement Payments") shall be reduced
(but not below zero) to the Reduced Amount. The "Reduced Amount" shall be an
amount expressed in present value which maximizes the aggregate present value of
Agreement Payments without causing any Payment to be subject to the taxation
under Section 4999 of the Code. For purposes of this Section 10, present value
shall be determined in accordance with Section 280G(d) (4) of the Code.

          (b)  All determinations to be made under this Section 10 shall be made
by KPMG Peat Marwick, or the Company's independent public accountant immediately
prior to the Change of Control if other than KPMG Peat Marwick (the "Accounting
Firm"), which firm shall use its best efforts to provide its determinations and
any supporting calculations both to the Company and the Employee within 10 days
of the Termination Date. Any such determination by the Accounting Firm shall be
binding upon the Company and the Employee. The Company shall in its sole
discretion determine which and how much of the Agreement Payments shall be
eliminated or reduced consistent with the requirements of this Section 10.
Within five days after the Company's determination, the Company shall pay (or
cause to be paid) or distribute (or cause to be distributed) to or for the
benefit of the Employee such amounts as are then due to the Employee under this
Agreement.

          (c)  As a result of the uncertainty in the application of Section 280G
of the Code at the time of the initial determination by the Accounting Firm
hereunder, it is possible that Agreement Payments, as the case may be, will have
been made by the Company which should not have been made ("Overpayment") or that
additional Agreement Payments which have not been made by the Company could have
been made ("Underpayment"), in each case, consistent with the calculations
required to be made hereunder. Within two years after the Termination of
Employment, the Accounting Firm shall review the determination made by it
pursuant to the


                                       10

<PAGE>



preceding paragraph. In the event that the Accounting Firm determines that an
Overpayment has been made, any such Overpayment shall be treated for all
purposes as a loan to the Employee which the Employee shall repay to the Company
together with interest at the applicable Federal rate provided for in Section
7872(f)(2) of the Code (the "Federal Rate"); PROVIDED, HOWEVER, that no amount
shall be payable by the Employee to the Company if and to the extent such
payment would not reduce the amount which is subject to taxation under Section
4999 of the Code. In the event that the Accounting Firm determines that an
Underpayment has occurred, any such Underpayment shall be promptly paid by the
Company to or for the benefit of the Employee together with interest at the
Federal Rate.

          (d)  All of the fees and expenses of the Accounting Firm in performing
the determinations referred to in subsections (b) and (c) above shall be borne
solely by the Company. The Company agrees to indemnify and hold harmless the
Accounting Firm of and from any and all claims, damages and expenses of any
nature resulting from or relating to its determinations pursuant to subsections
(b) and (c) above, except for claims, damages or expenses resulting from the
gross negligence or willful misconduct of the Accounting Firm.

          11.  SETTLEMENT OF ALL DISPUTES.

          (a)  Any dispute, controversy or claim arising out of or relating to
any provision of this Agreement or the Employee's Termination upon a Change of
Control shall be settled by arbitration in the City of Houston, Texas, in
accordance with the commercial arbitration rules then in effect of the American
Arbitration Association, before a panel of three arbitrators, two of whom shall
be selected by the Company and the Employee, respectively, and the third of whom
shall be selected by the other two arbitrators. Each arbitrator selected as
provided herein is required to be or have been a director or an executive
officer of a corporation whose shares of common stock were listed during at
least one year of such service on the New York Stock Exchange or the American
Stock Exchange or quoted on the National Association of Securities Dealers
Automated Quotations System. Any award entered by the arbitrators shall be
final, binding and nonappealable and judgment may be entered thereon by any
party in accordance with applicable law in any court of competent jurisdiction.
This arbitration provision shall be specifically enforceable. The fees of the
American Arbitration Association and the arbitrators and any expenses relating
to the conduct of the arbitration shall be paid by the Company.


                                       11
<PAGE>



          (b)  The party or parties challenging the right of the Employee to the
benefits of this Agreement shall in all circumstances have the burden of proof.

          12.  TERM OF AGREEMENT. This Agreement shall commence as of the date
first written above and shall continue in effect until the earlier of (i) the
date upon which the Employee ceases to be in the employ of the Company or any
Subsidiary thereof for any reason other than a Termination Upon a Change of
Control, or (ii) 24 months after a Change of Control has occurred, PROVIDED,
HOWEVER, that all of the obligations of the parties hereunder arising after a
Change of Control shall continue in effect until such obligations are satisfied
or have expired.

          13.  SUCCESSOR COMPANY. The Company shall require any successor or
successors (whether direct or indirect, by purchase, merger, consolidation or
otherwise) to all or substantially all of the business and/or assets of the
Company, by agreement in form and substance satisfactory to the Employee, to
acknowledge expressly that this Agreement is binding upon and enforceable
against the Company in accordance with the terms hereof, and to become jointly
and severally obligated with the Company to perform this Agreement in the same
manner and to the same extent that the Company would be required to perform if
no such succession or successions had taken place. Failure of the Company to
obtain such agreement prior to the effectiveness of any such succession shall be
a breach of this Agreement. As used in this Agreement, the Company shall mean
the Company as hereinbefore defined and any such successor or successors to its
business and/or assets, jointly and severally.

          14.  NOTICE. All notices and other communications required or
permitted hereunder or necessary or convenient in connection herewith shall be
in writing and shall be delivered personally or mailed by registered or
certified mail, return receipt requested, or by overnight express courier
service, as follows:

          If to the Company, to:

          Enterra Corporation
          13100 Northwest Freeway
          Sixth Floor
          Houston, TX 77040
          Attention:  The Chairman

          With a required copy to:

          Morgan, Lewis & Bockius
          2000 One Logan square


                                       12

<PAGE>



          Philadelphia, PA 19103
          Attention:  David R. King, Esq.


          If to the Employee, to:

          Windell D. Norris, Jr.
          806 West Forest
          Houston, TX  77079

or to such other names or addresses as the Company or the Employee, as the case
may be, shall designate by notice to the other party hereto in the manner
specified in this Section. Any such notice shall be deemed delivered and
effective when received in the case of personal delivery, five days after
deposit, postage prepaid, with the U.S. Postal Service in the base of registered
or certified mail, or on the next business day in the case of overnight express
courier service.

          15.  GOVERNING LAW. THIS AGREEMENT SHALL BE GOVERNED BY AND
INTERPRETED UNDER THE LAWS OF THE STATE OF DELAWARE WITHOUT GIVING EFFECT TO ANY
CONFLICT OF LAWS PROVISIONS.

          16.  CONTENTS OF AGREEMENT, AMENDMENT AND ASSIGNMENT.

          (a)  This Agreement supersedes all prior agreements and sets forth the
entire understanding between the parties hereto with respect to the subject
matter hereof and cannot be changed, modified, extended or terminated except
upon written amendment executed by the Employee and approved by the board and
executed on the Company's behalf by a duly authorized officer.  The provisions
of this Agreement may provide for payments to the Employee under certain
compensation or bonus plans (including without limitation the Stock Plan, the
Bonus Plan, the 401(k) Plan and the CRC-Evans Plan) under circumstances where
such plans would not provide for payment thereof. It is the specific intention
of the parties that the provisions of this Agreement shall supersede any
provisions to the contrary in such plans, and such plans shall be deemed to have
been amended to correspond with this Agreement without further action by the
Company or the Board.

          (b)  Nothing in this Agreement shall be construed as giving the
Employee any right to be retained in the employ of the Company or any of its
Subsidiaries.

          (c)  The Employee acknowledges that from time to time, the Company and
its subsidiaries may establish, maintain and distribute employee manuals or
handbooks or


                                       13

<PAGE>



personnel policy manuals, and officers or other representatives of the Company
or its Subsidiaries may make written or oral statements relating to personnel
policies and procedures. Such manuals, handbooks and statements are intended
only for general guidance. No policies, procedures or statements of any nature
by or on behalf of the Company or its Subsidiaries (whether written or oral, and
whether or not contained in any employee manual or handbook or personnel policy
manual), and no acts or practices of any nature, shall be construed to modify
this Agreement.

          (d)  All of the terms and provisions of this Agreement shall be
binding upon and inure to the benefit of and be enforceable by the respective
heirs, representatives, successors and assigns of the parties hereto, except
that the duties and responsibilities of the Employee and the Company hereunder
shall not be assignable in whole or in part by the Company.

          17.  SEVERABILITY. If any provision of this Agreement or application
thereof to anyone or under any circumstances shall be determined to be invalid
or unenforceable, such invalidity or unenforceability shall not affect any other
provisions or applications of this Agreement which can be given effect without
the invalid or unenforceable provision or application.

          18.  REMEDIES CUMULATIVE - NO WAIVER. No right conferred upon the
Employee by this Agreement is intended to be exclusive of any other right or
remedy, and each and every such right or remedy shall be cumulative and shall be
in addition to any other right or remedy given hereunder or now or hereafter
existing at law or in equity. No delay or omission by the Employee in exercising
any right, remedy or power hereunder or existing at law or in equity shall be
construed as a waiver thereof, including without limitation any delay by the
Employee in delivering a Notice of Termination pursuant to Section 2 hereof
after an event has occurred which would, if the Employee had resigned, have
constituted a Termination upon a Change of Control pursuant to Section 1(o)(ii)
of this Agreement.

          19.  MISCELLANEOUS. All section headings are for convenience only.
This Agreement may be executed in several counterparts, each of which is an
original. It shall not be necessary in making proof of this Agreement or any
counterpart hereof to produce or account for any of the other counterparts.


                                       14

<PAGE>



     IN WITNESS WHEREOF, the undersigned, intending to be legally bound, have
executed this Agreement as of the date first above written.


Attest:                                      ENTERRA CORPORATION

/s/ M. Gay Mather                                /s/ D. Dale Wood
- -----------------------------                By: ------------------------------
         Secretary                               D. Dale Wood
                                                 Chairman, President and
                                                 Chief Executive Officer


/s/ Shirley Brandt                               /s/ Windell D. Norris, Jr.
- -----------------------------                By: ------------------------------
         Witness                                 Windell D. Norris, Jr.


                                       15



<PAGE>



                              SEVERANCE AGREEMENT



              Agreement made as of February 21, 1991 between Enterra
Corporation, a Delaware corporation (the "Company"), and J. Joseph Percle (the
"Employee").

              WHEREAS, the Employee is presently employed by Enterra Oil Field
Services, Ltd., a "Subsidiary" (as defined in Section 1 hereof), as its
President;

              WHEREAS, the Company considers it essential to foster the
employment of well qualified key management personnel for the Company and its
Subsidiaries, and, in this regard, the board of directors of the Company
recognizes that, as is the case with many publicly held corporations, the
possibility of a change in control of the Company may exist and that such
possibility, and the uncertainty and questions which it may raise among
management, may result in the departure or distraction of key management
personnel to the detriment of the Company;

              WHEREAS, the board of directors of the Company has determined that
appropriate steps should be taken to reinforce and encourage the continued
attention and dedication of key members of the management of the Company and its
Subsidiaries to their assigned duties without distraction in the face of
potentially disturbing circumstances arising from the possibility of a change in
control of the Company, although no such change is now contemplated; and

              WHEREAS, in order to induce the Employee to remain in the employ
of the Subsidiary, the Company agrees that the Employee shall receive the
compensation and benefits set forth in this Agreement in the event his
employment with the Company is terminated subsequent to a "Change of Control"
(as defined in Section 1 hereof) of the Company as a cushion against the
financial and career impact on the Employee of any such Change of Control;

              NOW, THEREFORE, in consideration of the foregoing and the mutual
covenants and agreements hereinafter set forth and intending to be legally bound
hereby, the parties hereto agree as follows:

              l.  DEFINITIONS.  For all purposes of this Agreement, the
following terms shall have the meanings specified in this Section unless the
context clearly otherwise requires:



<PAGE>



              (a)  "Affiliate" and "Associate" shall have the respective
meanings ascribed to such terms in Rule 12b-2 of the General Rules and
Regulations under the Securities Exchange Act of 1934, as amended (the "Exchange
Act").

              (b)  "Base Salary" shall mean the total cash remuneration earned
by the Employee on an annualized basis in all capacities with the Company and
its Subsidiaries, including any compensation the payment of which has been
deferred pursuant to a salary reduction or deferral plan (including a 401(k)
plan, other than company matching contributions) or agreement, but exclusive of
any cash payments made to him under the Company's Bonus Plan, or any
contributions made for his benefit to the Company's 401(k) Plan or CRC-Evans
Plan.

              (c)  A Person shall be deemed the "Beneficial Owner" of any
securities:

                   (i)    that such Person or any of such Person's Affiliates
              or Associates, directly or indirectly, has the right to acquire
              (whether such right is exercisable immediately or only after the
              passage of time) pursuant to any agreement, arrangement or
              understanding (whether or not in writing) or upon the exercise of
              conversion rights, exchange rights, rights, warrants or options,
              or otherwise; PROVIDED, HOWEVER, that a Person shall not be
              deemed the "Beneficial Owner" of securities tendered pursuant to a
              tender or exchange offer made by such Person or any of such
              Person's Affiliates or Associates until such tendered securities
              are accepted for payment, purchase or exchange;

                   (ii)   that such Person or any of such Person's Affiliates
              or Associates, directly or indirectly, has the right to vote or
              dispose of or has "beneficial ownership" of (as determined
              pursuant to Rule 13d-3 of the General Rules and Regulations under
              the Exchange Act), including without limitation pursuant to any
              agreement, arrangement or understanding, whether or not in
              writing; PROVIDED, HOWEVER, that a Person shall not be deemed
              the "Beneficial Owner" of any security under this subsection (ii)
              as a result of an oral or written agreement, arrangement or
              understanding to vote such security if such agreement, arrangement
              or understanding (a) arises solely from a revocable proxy given in
              response to a public proxy or consent solicitation made pursuant
              to, and in accordance with, the applicable provisions of


                                       2



<PAGE>



              the General Rules and Regulations under the Exchange Act, and (b)
              is not then reportable by such Person on Schedule 13D under the
              Exchange Act (or any comparable or successor report); or

                   (iii)  that are beneficially owned, directly or indirectly,
              by any other Person (or any Affiliate or Associate thereof) with
              which such Person (or any of such Person's Affiliates or
              Associates) has any agreement, arrangement or understanding
              (whether or not in writing) for the purpose of acquiring, holding,
              voting (except, pursuant to a revocable proxy as described in the
              proviso to subsection (ii) above or the May 2, 1986 option
              agreement between Shamrock Holdings, Inc. and the shareholders
              known as the "SGS Group" or their successors) or disposing of any
              voting securities of the Company;

PROVIDED, HOWEVER, that nothing in this Section 1(c) shall cause a Person
engaged in business as an underwriter of securities to be the "Beneficial Owner"
of any securities acquired through such Person's participation in good faith in
a firm commitment underwriting until the expiration of forty days after the date
of such acquisition.

              (d)   "Board" shall mean the board of directors of the Company.

              (e)   "Bonus Plan" shall mean the Company's Management Incentive
Bonus Plan, as in effect immediately prior to a Change of Control.

              (f)   "Change of Control" shall be deemed to have taken place if
(i) any Person (except the Company, any Subsidiary of the Company, any employee
benefit plan of the Company or of any Subsidiary of- the Company, any Person or
entity organized, appointed or established by the Company for or pursuant to the
terms of any such employee benefit plan, or an Exempted Person), together with
all Affiliates and Associates of such Person acting in concert as described in
Section 14(d) (2) of the Exchange Act, shall become the Beneficial Owner in the
aggregate of 30% or more of the Common Stock of the Company then outstanding
within the meaning of Rule 13d-3 promulgated under the Exchange Act.

              (g)   "CRC-Evans Plan" shall mean the CRC-Evans Money Purchase
Pension Plan, as in effect immediately prior to a Change of Control.

              (h)   "Exempted Person" shall mean any of Shamrock Holdings of
California, Inc., a Delaware corporation


                                         3



<PAGE>



("Shamrock"), Shamrock Holdings, Inc., a Delaware corporation ("Shamrock
Holdings"), or any Affiliate or Associate of Shamrock or Shamrock Holdings.
"Exempted Person" shall not include transferees from any Exempted Person except
where such transferees are Affiliates or Associates of Shamrock or Shamrock
Holdings.

              (i)   "401(k) Plan" shall mean the Company's 401(k) Plan, as in
effect immediately prior to a Change of Control.

              (j)   "Normal Retirement Date" shall mean the first day of the
calendar month coincident with or next following the Employee's 65th birthday.

              (k)   "Person" shall mean any individual, firm, corporation,
partnership or other entity.

              (l)   "Stock Plan" shall mean the Company's Stock Option Plan or
any successor plan thereto, as in effect immediately prior to a Change of
Control.

              (m)   "Subsidiary" shall have the meaning ascribed to such term
in Rule 12b-2 of the General Rules and Regulations under the Exchange Act.

              (n)   "Termination Date" shall mean the date of receipt of the
Notice of Termination described in Section 2 hereof or any later date specified
therein, as the case may be.

              (o)   "Termination of Employment" shall mean the termination of
the Employee's actual employment relationship with the Company.

              (p)   "Termination upon a Change of Control" shall mean a
Termination of Employment upon or within two years after a Change of Control
either:

                    (i)   initiated by the Company for any reason other than
              (x) the Employee's continuous illness, injury or incapacity for a
              period of six consecutive months, (y) for "cause," which shall
              mean misappropriation of funds, habitual insobriety, substance
              abuse, conviction of a crime involving moral turpitude, or gross
              negligence in the performance of his duties, which gross
              negligence has had a material adverse effect on the business,
              operations, assets, properties or financial condition of the
              Company and its Subsidiaries taken as a whole, or (z) by reason of
              the occurrence of the Normal Retirement Date; or


                                       4



<PAGE>



                    (ii) initiated by the Employee following one or more of the
               following occurrences:

                         (A)  a significant reduction by the Company or its
                    Subsidiaries of the authority, duties or responsibilities of
                    the Employee immediately prior to the Change of Control;

                         (B)  any removal of the Employee from or any failure to
                    re-elect the Employee to the officer positions with the
                    Company and its Subsidiaries held by him immediately prior
                    to the Change of Control, except in connection with
                    promotions to higher office or in connection with
                    consolidations among the Company's Subsidiaries where the
                    Employee is elected to similar positions in the successor
                    company or companies;

                         (C)  a reduction by the Company in the Employee's Base
                    Salary as in effect immediately prior to the Change of
                    Control;

                         (D)  revocation or any modification (except as may be
                    required in the normal course of business in light of any
                    requirement of or change in federal law or regulations) of
                    the Bonus Plan, 401(k) Plan or CRC-Evans Plan, or any action
                    taken pursuant to the terms of such plans, which materially
                    (x) reduces the opportunity to receive compensation under
                    any of such plans of equivalent amounts received by the
                    Employee during the two fiscal years immediately preceding
                    the Change of Control, subject to the right of the Board to
                    establish in a manner consistent with past practice prior to
                    the Change of Control reasonable goals under such plans,
                    (y) reduces the compensation payable to the Employee under
                    any of such plans but which does not effect comparable
                    reductions in the compensation payable to the other
                    participants in such plans, or (z) increases the
                    compensation payable to other participants in any of such
                    plans but which does not effect corresponding increases in
                    the amount of compensation payable to the Employee; or

                         (E)  a transfer of the Employee, without his express
                    written consent, to a location which is outside the general
                    metropolitan area in which his principal place of business


                                       5



<PAGE>



                      immediately preceding the Change of Control may be
                      located, or which is otherwise an unreasonable commuting
                      distance from the Employee's principal residence at the
                      date of the Change of Control.

              2.  NOTICE OF TERMINATION.  Any Termination upon a Change of
Control shall be communicated by a Notice of Termination to the other party
hereto given in accordance with Section 14 hereof. For purposes of this
Agreement, a "Notice of Termination" means a written notice which (i) indicates
the specific termination provision in this Agreement relied upon, (ii) briefly
summarizes the facts and circumstances deemed to provide a basis for termination
of the Employee's employment under the provision so indicated, and (iii) if the
termination date is other than the date of receipt of such notice, specifies the
termination date (which date shall not be more than 15 days after the giving of
such notice).

              3.  SEVERANCE COMPENSATION UPON TERMINATION.

              (a) Subject to the provisions of Section 10 hereof and to
adjustment as provided in paragraph (b) below and Section 9(a), in the event of
the Employee's Termination upon a Change of Control, the Company shall pay to
the Employee, within fifteen days after the Termination Date (or as soon as
possible thereafter in the event that the procedures set forth in Section 10(b)
hereof cannot be completed within 15 days), an amount in cash equal to two times
the sum of paragraphs (i) and (ii) below:

                      (i)    The Employee's Base Salary in effect either
              immediately prior to the Termination of Employment or immediately
              prior to the Change of Control, whichever is higher; and

                      (ii)   The average of the annual bonuses earned by the
              Employee under the Bonus Plan in the two fiscal years immediately
              prior to such Termination of Employment.

              (b) In the event the Employee's Normal Retirement Date would occur
prior to twenty-four months after the Termination Date, the aggregate cash
amount determined as set forth in (a) above shall be reduced by multiplying it
by a fraction, the numerator of which shall be the number of days from the
Termination Date to the Employee's Normal Retirement Date and the denominator of
which shall be 730.  No payments shall be due Employee in the event that the
Normal Retirement Date has been reached prior to the Termination Date.


                                       6



<PAGE>



              4.   OTHER PAYMENTS. Subject to the provisions of Section 10
hereof, in the event of the Employee's Termination upon a Change of Control, the
Company shall:

              (a)  pay to the Employee within fifteen days after the Termination
Date, unless the Employee has exercised such options and rights, an amount equal
to the excess, if any, of the aggregate fair market value of the shares of the
Company's Common Stock subject to all stock options and stock appreciation
rights outstanding and unexercised immediately prior to the Termination Date,
whether vested or unvested, granted to the Employee under the Stock Plan, over
the aggregate exercise price of all such stock options. For purposes of this
paragraph, fair market value shall mean the highest of (x) the closing price of
the Company's Common Stock on the business day immediately preceding the
Termination Date, if such Common Stock is publicly traded at such date, (y) if
such Common Stock is not publicly traded at the Termination Date, the value
determined by an independent appraiser, such appraiser to be selected by the
Employee and to be reasonably satisfactory to the Company (the fees and expenses
of such appraiser to be borne by the Company), or (z) the highest per share
price of the Company's Common Stock paid (in connection with the Change of
Control or at any time thereafter) by the Person or group whose acquisition of
shares of Common Stock of the Company has given rise to a Change of Control;

              (b)  to the extent permitted by applicable law, continue or cause
to be continued until 24 months after the Termination Date, on the cost-sharing
basis (if any) in effect immediately prior to the Change of Control, medical,
dental and life insurance benefits (and, at the option of the Employee,
disability insurance benefits) substantially equivalent in all material respects
to those furnished by the Company and its Subsidiaries to the Employee
immediately prior to the Change of Control; PROVIDED, HOWEVER, that if the
Employee's Normal Retirement Date would have occurred prior to 24 months after
the Termination Date, the obligation of the Company to provide such benefits
shall cease at the Employee's Normal Retirement Date; and PROVIDED FURTHER,
HOWEVER, that the obligation of the Company to provide such benefits shall
cease at such time as the Employee is employed on a full time basis by a
corporation not owned or controlled by the Employee that provides the Employee,
on substantially the same cost-sharing basis (if any) between the Company and
the Employee in effect immediately prior to the Change of Control, with medical,
dental, life and disability insurance benefits substantially equivalent in all
material respects to those furnished by the Company and its Subsidiaries to the
Employee immediately prior to the Change of Control;


                                         7



<PAGE>



              (c)  for vesting purposes only, in the event of a Termination
upon a Change of Control occurring prior to the Normal Retirement Date, credit
the Employee with the lesser of (i) two additional "years of service" (as
defined in the Company's 401(k) Plan) or (ii) the period of time from the
Termination Date to the Normal Retirement Date under each of the Company's
401(k) Plan and CRC-Evans Plan, in addition to the years of service that would
have otherwise been calculated by reference solely to the Termination Date, it
being understood that benefits in respect of the two additional years of service
shall be paid to the Employee under the Company's 401(k) Plan or CRC-Evans Plan,
and that the Company shall, to the extent necessary to provide the Employee the
additional benefits intended hereby, amend the 401(k) Plan or CRC-Evans Plan or
pay such additional benefits outside the plan as may be necessary; and

              (d)  permit the Employee to continue the use of his Company
car, if any, without any cost for a period of six months thereafter.
Thereafter, the Employee shall return the car to the Company unless, in the case
of a car owned by the Company, the Employee elects to purchase the car from the
Company at the net book value thereof at the date of the purchase or, in the
case of a car leased by the Company, the Employee pays the Company, as such
amounts become due and payable, all rental payments charged to the Company for
the use of such car for the remainder of the lease therefore.

              5.   VESTING AND ACCELERATION OF CERTAIN BENEFITS. In the event
of a Termination upon a Change of Control, and subject to the provisions of
Section 10 hereof, all restrictions remaining on the Termination Date on the
restricted shares, if any, received by the Employee, pursuant to the Stock Plan
shall lapse, and said shares shall thereupon be owned by the Employee free and
clear of all restrictions of any nature whatsoever, except those, if any, under
applicable federal and state securities laws.

              6.   ENFORCEMENT.

              (a)  In the event that the Company shall fail or refuse to make
payment of any amounts due the Employee under Sections 3, 4 and 5 hereof within
the respective time periods provided therein, the Company shall pay to the
Employee, in addition to the payment of any other sums provided in this
Agreement, interest, compounded daily, on any amount remaining unpaid from the
date payment is required under Section 3, 4 or 5, as appropriate, until paid to
the Employee, at the rate from time to time announced by Wells Fargo Bank, N.A.
as its "prime rate" plus 2%, each change in such rate to take effect on the
effective date of the change in such prime rate.


                                         8



<PAGE>



              (b)  It is the intent of the parties that the Employee not be
required to incur any expenses associated with the enforcement of his rights
under this Agreement by arbitration, litigation or other legal action because
the cost and expense thereof would substantially detract from the benefits
intended to be extended to the Employee hereunder. Accordingly, the Company
shall pay the Employee on demand the amount necessary to reimburse the Employee
in full for all expenses (including all attorneys' fees and legal expenses)
incurred by the Employee in enforcing any of the obligations of the Company
under this Agreement.

              7.   NO MITIGATION. The Employee shall not be required to
mitigate the amount of any payment or benefit provided for in this Agreement by
seeking other employment or otherwise.

              8.   NON-EXCLUSIVITY OF RIGHTS. Nothing in this Agreement shall
prevent or limit the Employee's continuing or future participation in or rights
under any benefit, bonus, incentive or other plan or program provided by the
Company or any of its Subsidiaries or Affiliates and for which the Employee may
qualify.

              9.   COORDINATION OF BENEFITS; NO SET-OFF; TAXES.

              (a)  The severance plan or policy, if any, applicable to employees
of Enterra or the Subsidiary which employs the Employee, and any other severance
payments required by applicable statutes or provided under government programs
may provide compensation and benefits to Employee upon events which also
constitute a Termination upon a Change of Control as defined in this Agreement.
In such event, Employee shall be entitled only to the largest cash compensation
provided for under any of such agreements, plans, policies, statutes or programs
and the maximum benefit continuance provided for under any of such agreements,
plans, policies, statues or programs, and the payments referred to in Section 3
hereof shall be reduced to the extent necessary to effect such coordination of
benefits.

              (b)  Except as specifically set forth in (a) above, the Company's
obligation to make the payments provided for in this Agreement and otherwise to
perform its obligations hereunder shall not be affected by any circumstances,
including, without limitation, any set-off, counterclaim, recoupment, defense or
other right which the Company may have against the Employee or others.

              (c)  Employee alone, and not the Company or any Subsidiary, shall
be responsible for the payment of all


                                           9



<PAGE>



federal, state and local taxes in respect of the payments to be made and
benefits to be provided under this Agreement.

              10.  CERTAIN REDUCTION OF PAYMENTS.

              (a)  Anything in this Agreement to the contrary
notwithstanding, in the event that it shall be determined as set forth herein
that any payment or distribution by the Company to or for the benefit of the
Employee, whether paid or payable or distributed or distributable pursuant to
the terms of this Agreement or otherwise (a "Payment"), would constitute an
"excess parachute payment" within the meaning of Section 280G of the Internal
Revenue Code of 1986, as amended (the "Code"), and that it would be economically
advantageous to the Company to reduce the Payment to avoid or reduce the
taxation of excess parachute payments under Section 4999 of the Code, the
aggregate present value of amounts payable or distributable to or for the
benefit of the Employee pursuant to this Agreement (such payments or
distributions pursuant to this Agreement are hereinafter referred to as
"Agreement Payments") shall be reduced (but not below zero) to the Reduced
Amount. The "Reduced Amount" shall be an amount expressed in present value which
maximizes the aggregate present value of Agreement Payments without causing any
Payment to be subject to the taxation under Section 4999 of the Code. For
purposes of this Section 10, present value shall be determined in accordance
with Section 280G(d) (4) of the Code.

              (b)  All determinations to be made under this Section 10 shall
be made by Peat Marwick Main & Co., or the Company's independent public
accountant immediately prior to the Change of Control if other than Peat Marwick
Main & Co. (the "Accounting Firm"), which firm shall use its best efforts to
provide its determinations and any supporting calculations both to the Company
and the Employee within 10 days of the Termination Date. Any such determination
by the Accounting Firm shall be binding upon the Company and the Employee. The
Company shall in its sole discretion determine which and how much of the
Agreement Payments shall be eliminated or reduced consistent with the
requirements of this Section 10. Within five days after the Company's
determination, the Company shall pay (or cause to be paid) or distribute (or
cause to be distributed) to or for the benefit of the Employee such amounts as
are then due to the Employee under this Agreement.

              (c)  As a result of the uncertainty in the application of
Section 280G of the Code at the time of the initial determination by the
Accounting Firm hereunder, it is possible that Agreement Payments, as the case
may be, will have been made by the Company which should not have been made


                                          10



<PAGE>



("Overpayment") or that additional Agreement Payments which have not been made
by the Company could have been made ("Underpayment"), in each case, consistent
with the calculations required to be made hereunder. Within two years after the
Termination of Employment, the Accounting Firm shall review the determination
made by it pursuant to the preceding paragraph. In the event that the Accounting
Firm determines that an overpayment has been made, any such Overpayment shall be
treated for all purposes as a loan to the Employee which the Employee shall
repay to the Company together with interest at the applicable Federal rate
provided for in Section 7872(f)(2) of the Code (the "Federal Rate"); PROVIDED,
HOWEVER, that no amount shall be payable by the Employee to the Company if and
to the extent such payment would not reduce the amount which is subject to
taxation under Section 4999 of the Code. In the event that the Accounting Firm
determines that an Underpayment has occurred, any such Underpayment shall be
promptly paid by the Company to or for the benefit of the Employee together with
interest at the Federal Rate.

              (d)  All of the fees and expenses of the Accounting Firm in
performing the determinations referred to in subsections (b) and (c) above shall
be borne solely by the Company. The Company agrees to indemnify and hold
harmless the Accounting Firm of and from any and all claims, damages and
expenses of any nature resulting from or relating to its determinations pursuant
to subsections (b) and (c) above, except for claims, damages or expenses
resulting from the gross negligence or willful misconduct of the Accounting
Firm.

              11.  SETTLEMENT OF ALL DISPUTES.

              (a)  Any dispute, controversy or claim arising out of or relating
to any provision of this Agreement or the Employee's Termination upon a Change
of Control shall be-settled by arbitration in the City of Houston, Texas, in
accordance with the commercial arbitration rules then in effect of the American
Arbitration Association, before a panel of three arbitrators, two of whom shall
be selected by the Company and the Employee, respectively, and the third of whom
shall be selected by the other two arbitrators. Each arbitrator selected as
provided herein is required to be or have been a director or an executive
officer of a corporation whose shares of common stock were listed during at
least one year of such service on the New York Stock Exchange or the American
Stock Exchange or quoted on the National Association of Securities Dealers
Automated Quotations System. Any award entered by the arbitrators shall be
final, binding and nonappealable and judgment may be entered thereon by any
party in accordance with applicable law in any court of


                                          11



<PAGE>



competent jurisdiction. This arbitration provision shall be specifically
enforceable. The fees of the American Arbitration Association and the
arbitrators and any expenses relating to the conduct of the arbitration shall be
paid by the Company.

              (b)  The party or parties challenging the right of the Employee
to the benefits of this Agreement shall in all circumstances have the burden of
proof.

              12.  TERM OF AGREEMENT. This Agreement shall commence as of
the date first written above and shall continue in effect until the earlier of
(i) the date upon which the Employee ceases to be in the employ of the Company
or any Subsidiary thereof for any reason other than a Termination Upon a Change
of Control, or (ii) 24 months after a Change of Control has occurred, PROVIDED,
HOWEVER, that all of the obligations of the parties hereunder arising after a
Change of Control shall continue in effect until such obligations are satisfied
or have expired.

              13.  SUCCESSOR COMPANY. The Company shall require any
successor or successors (whether direct or indirect, by purchase, merger,
consolidation or otherwise) to all or substantially all of the business and/or
assets of the Company, by agreement in form and substance satisfactory to the
Employee, to acknowledge expressly that this Agreement is binding upon and
enforceable against the Company in accordance with the terms hereof, and to
become jointly and severally obligated with the Company to perform this
Agreement in the same manner and to the same extent that the Company would be
required to perform if no such succession or successions had taken place.
Failure of the Company to obtain such agreement prior to the effectiveness of
any such succession shall be a breach of this Agreement. As used in this
Agreement, the Company shall mean the Company as hereinbefore defined and any
such successor or successors to its business and/or assets, jointly and
severally.

              14.  NOTICE. All notices and other communications required or
permitted hereunder or necessary or convenient in connection herewith shall be
in writing and shall be delivered personally or mailed by registered or
certified mail, return receipt requested, or by overnight express courier
service, as follows:

              If to the Company, to:

              Enterra Corporation
              2707 North Loop West
              Suite 1050
              Houston, TX 77008


                                      12



<PAGE>



              Attention:  The Chairman

              With a required copy to:

              Morgan, Lewis & Bockius
              2000 One Logan Square
              Philadelphia, PA 19103
              Attention:  David R. King, Esq.

              If to the Employee, to:

              J. Joseph Percle
              c/o Enterra Oil Field Services, Ltd.
              P. O. Box 2357
              Defense Roundabout #109
              Rashid Building
              Dubai, U.A.E.

or to such other names or address as the Company or the Employee, as the case
may be, shall designate by notice to the other party hereto in the manner
specified in this section.  Any such notice shall be deemed delivered and
effective when received in the case of personal delivery, five days after
deposit, postage prepaid, with the U.S. Postal Service in the case of registered
or certified mail, or on the next business day in the case of overnight express
courier service.

              15.  GOVERNING LAW.  THIS AGREEMENT SHALL BE GOVERNED BY AND
INTERPRETED UNDER THE LAWS OF THE STATE OF DELAWARE WITHOUT GIVING EFFECT TO ANY
CONFLICT OF LAWS PROVISIONS.

              16.  CONTENTS OF AGREEMENT, AMENDMENT AND ASSIGNMENT.

              (a)  This Agreement supersedes all prior agreements and sets forth
the entire understanding between the parties hereto with respect to the subject
matter hereof and cannot be changed, modified, extended or terminated except
upon written amendment executed by the Employee and approved by the board and
executed on the Company's behalf by a duly authorized officer.  The provisions
of this Agreement may provide for payments to the Employee under certain
compensation or bonus plans (including without limitation the Stock Plan, the
Bonus Plan, the 401(k) Plan and the CRC-Evans Plan) under circumstances where
such plans would not provide for payment thereof.  It is the specific intention
of the parties that the provisions of this Agreement shall supersede any
provisions to the contrary in such plans, and such plans shall be deemed to have
been amended to correspond with this


                                        13



<PAGE>



Agreement without further action by the Company or the Board.

              (b)  Nothing in this Agreement shall be construed as giving the
Employee any right to be retained in the employ of the Company or any of its
Subsidiaries.

              (c)  The Employee acknowledges that from time to time, the
Company and its subsidiaries may establish, maintain and distribute employee
manuals or handbooks or personnel policy manuals, and officers or other
representatives of the Company or its Subsidiaries may make written or oral
statements relating to personnel policies and procedures. Such manuals,
handbooks and statements are intended only for general guidance. No policies,
procedures or statements of any nature by or on behalf of the Company or its
Subsidiaries (whether written or oral, and whether or not contained in any
employee manual or handbook or personnel policy manual), and no acts or
practices of any nature, shall be construed to modify this Agreement.

              (d)  All of the terms and provisions of this Agreement shall be
binding upon and inure to the benefit of and be enforceable by the respective
heirs, representatives, successors and assigns of the parties hereto, except
that the duties and responsibilities of the Employee and the Company hereunder
shall not be assignable in whole or in part by the Company.

              17.  SEVERABILITY. If any provision of this Agreement or
application thereof to anyone or under any circumstances shall be determined to
be invalid or unenforceable, such invalidity or unenforceability shall not
affect any other provisions or applications of this Agreement which can be given
effect without the invalid or unenforceable provision or application.

              18.  REMEDIES CUMULATIVE - NO WAIVER. No right conferred
upon the Employee by this Agreement is intended to be exclusive of any other
right or remedy, and each and every such right or remedy shall be cumulative and
shall be in addition to any other right or remedy given hereunder or now or
hereafter existing at law or in equity. No delay or omission by the Employee in
exercising any right, remedy or power hereunder or existing at law or in equity
shall be construed as a waiver thereof, including without limitation any delay
by the Employee in delivering a Notice of Termination pursuant to Section 2
hereof after an event has occurred which would, if the Employee had resigned,
have constituted a Termination upon a Change of Control pursuant to Section
1(p)(ii) of this Agreement.


                                        14



<PAGE>



              19.  MISCELLANEOUS.  All section headings are for convenience
only.  This Agreement may be executed in several counterparts, each of which is
an original.  It shall not be necessary in making proof of this Agreement or any
counterpart hereof to produce or account for any of the other counterparts.

              IN WITNESS WHEREOF, the undersigned, intending to be legally
bound, have executed this Agreement as of the date first above written.


Attest:                                   ENTERRA CORPORATION


/s/ M. Gay Mather                         By: /s/ Steven C. Grant
- ------------------------------            ---------------------------------
Secretary                                 Steven C. Grant
                                          Sr. Vice President and
                                            Chief Financial Officer



/s/ Steven W. Krablin                     /s/ J. Joseph Percle
- ------------------------------            -------------------------------------
Witness                                   Joseph Percle


                                        15

<PAGE>



                              SEVERANCE AGREEMENT



            Agreement made as of April 1, 1993 between Pipeline Induction Heat
Limited (the "Company") and Michael Peter Smith (the "Employee").

            WHEREAS, the Employee is presently employed by the Company as its
Managing Director;

            WHEREAS, the Company considers it essential to foster the employment
of well qualified key management personnel for the Company and, in this regard,
the directors of the Company recognize that, as is the case with many publicly
held corporations, the possibility of a change in control of Enterra Corporation
("Enterra"), the parent of the Company, may exist and that such possibility, and
the uncertainty and questions which it may raise among management of the
Company, may result in the departure or distraction of key management personnel
to the detriment of the Company;

            WHEREAS, the directors of the Company, with the concurrence of
Enterra, have determined that appropriate steps should be taken to reinforce and
encourage the continued attention and dedication of key members of the
management of the Company to their assigned duties without distraction in the
face of potentially disturbing circumstances arising from the possibility of a
change in control of Enterra or the Company, although no such change is now
contemplated; and

            WHEREAS, in order to induce the Employee to remain in the employ of
the Company, the Company agrees that the Employee shall receive the compensation
and benefits set forth in this Agreement in the event his employment with the
Company is terminated subsequent to a "Change of Control" (as defined in Section
1 hereof) of Enterra or the Company as a cushion against the financial and
career impact on the Employee of any such Change of Control;

            NOW, THEREFORE, in consideration of the foregoing and the mutual
covenants and agreements hereinafter set forth and intending to be legally bound
hereby, the parties hereto agree as follows:

            l.  DEFINITIONS.  For all purposes of this Agreement, the
following terms shall have the meanings specified in this Section unless the
context clearly otherwise requires:

            (a) "Affiliate" and "Associate" shall have the respective meanings
ascribed to such terms in Rule 12b-2 of


<PAGE>



the General Rules and Regulations under the U.S. Securities Exchange Act of
1934, as amended (the "Exchange Act").

            (b) "Base Salary" shall mean the total cash remuneration earned by
the Employee on an annualized basis in all capacities with the Company and its
Subsidiaries, if any, but exclusive of any cash payments made to him under the
Company's Bonus Plan, if any, or under any type of deferred compensation or
retirement plan;

            (c) A Person shall be deemed the "Beneficial Owner" of any
securities:

                (i)   that such Person or any of such Person's Affiliates or
            Associates, directly or indirectly, has the right to acquire
            (whether such right is exercisable immediately or only after the
            passage of time) pursuant to any agreement, arrangement or
            understanding (whether or not in writing) or upon the exercise of
            conversion rights, exchange rights, rights, warrants or options, or
            otherwise; PROVIDED, HOWEVER, that a Person shall not be deemed
            the "Beneficial Owner" of securities tendered pursuant to a tender
            or exchange offer made by such Person or any of such Person's
            Affiliates or Associates until such tendered securities are accepted
            for payment, purchase or exchange;

                (ii)  that such Person or any of such Person's Affiliates or
            Associates, directly or indirectly, has the right to vote or dispose
            of or has "beneficial ownership" of (as determined pursuant to Rule
            13d-3 of the General Rules and Regulations under the Exchange Act),
            including without limitation pursuant to any agreement, arrangement
            or understanding, whether or not in writing; PROVIDED, HOWEVER,
            that a Person shall not be deemed the "Beneficial Owner" of any
            security under this subsection (ii) as a result of an oral or
            written agreement, arrangement or understanding to vote such
            security if such agreement, arrangement or understanding (A) arises
            solely from a revocable proxy given in response to a public proxy or
            consent solicitation made pursuant to, and in accordance with, the
            applicable provisions of the General Rules and Regulations under the
            Exchange Act, and (B) is not then reportable by such Person on
            Schedule 13D under the Exchange Act (or any comparable or successor
            report); or


                                       2



<PAGE>



                (iii) that are beneficially owned, directly or indirectly, by
            any other Person (or any Affiliate or Associate thereof) with which
            such Person (or any of such Person's Affiliates or Associates) has
            any agreement, arrangement or understanding (whether or not in
            writing) for the purpose of acquiring, holding, voting or disposing
            of any voting securities of Enterra;

PROVIDED, HOWEVER, that nothing in this Section 1(c) shall cause a Person
engaged in business as an underwriter of securities to be the "Beneficial Owner"
of any securities acquired through such Person's participation in good faith in
a firm commitment underwriting until the expiration of forty days after the date
of such acquisition.

            (d)   "Bonus Plan" shall mean any Company or Enterra bonus plan in
which the Employee participates, as in effect immediately prior to a Change of
Control.

            (e)   "Change of Control" shall be deemed to have taken place if (i)
any Person (except Enterra, any Subsidiary of Enterra, any employee benefit plan
of Enterra or of any Subsidiary of Enterra, or any Person or entity organized,
appointed or established by Enterra for or pursuant to the terms of any such
employee benefit plan), together with all Affiliates and Associates of such
Person acting in concert as described in Section 14(d)(2) of the Exchange Act,
shall become the Beneficial Owner in the aggregate of 30% or more of the Common
Stock of Enterra then outstanding within the meaning of Rule 13d-3 promulgated
under the Exchange Act, or (ii) the Company ceases to be controlled, directly or
indirectly, by Enterra, or if it sells all or substantially all of its assets to
a company not so controlled by Enterra.

            (f)   "Normal Retirement Date" shall mean the first day of the
calendar month coincident with or next following the Employee's 65th birthday.

            (g)   "Person" shall mean any individual, firm, corporation,
partnership or other entity.

            (h)   "Stock Plan" shall mean Enterra's Stock Option Plan or any
successor plan thereto, as in effect immediately prior to a Change of Control.

            (i)   "Subsidiary" shall have the meaning ascribed to such term in
Rule 12b-2 of the General Rules and Regulations under the Exchange Act.

            (j)   "Termination Date" shall mean the date of receipt of the
Notice of Termination described in Section 2


                                           3


<PAGE>



hereof or any later date specified therein, as the case may be.

            (k)   "Termination of Employment" shall mean the termination of the
Employee's actual employment relationship with the Company.

            (l)   "Termination upon a Change of Control" shall mean a
Termination of Employment upon or within two years after a Change of Control
either:

                  (i)    initiated by the Company or Enterra for any reason
            other than (x) the Employee's continuous illness, injury or
            incapacity for a period of six consecutive months, (y) for "cause,"
            which shall mean misappropriation of funds, habitual insobriety,
            substance abuse, conviction of a crime involving moral turpitude, or
            gross negligence in the performance of his duties, which gross
            negligence has had a material adverse effect on the business,
            operations, assets, properties or financial condition of the Company
            and its Subsidiaries, if any, taken as a whole, or (z) by reason of
            the occurrence of the Normal Retirement Date; or

                  (ii)   initiated by the Employee following one or more of the
            following occurrences:

                         (A)  a significant reduction by the Company or its
                  Subsidiaries, if any, of the authority, duties or
                  responsibilities of the Employee immediately prior to the
                  Change of Control;

                         (B)  any removal of the Employee from or any failure to
                  re-elect the Employee to the officer positions with the
                  Company and its Subsidiaries, if any, held by him immediately
                  prior to the Change of Control, except in connection with
                  promotions to higher office or in connection with
                  consolidations among the Company's Subsidiaries where the
                  Employee is elected to similar positions in the successor
                  company or companies;

                         (C)  a reduction by the Company in the Employee's Base
                  Salary as in effect immediately prior to the Change of
                  Control;

                         (D)  any revocation or material modification (except as
                  may be required in the


                                       4



<PAGE>



                  normal course of business in light of any requirement of or
                  change in applicable law or regulations) of any Bonus Plan or
                  deferred compensation or retirement plan, or any action taken
                  pursuant to the terms of any of such plans, which materially
                  (x) reduces the opportunity to receive compensation under any
                  of such plans of amounts equivalent to those received by the
                  Employee during the two fiscal years immediately preceding the
                  Change of Control, subject to the right of the directors of
                  the Company or of Enterra to establish in a manner consistent
                  with past practice prior to the Change of Control reasonable
                  goals under such plans, (y) reduces the compensation payable
                  to the Employee under any of such plans but which does not
                  effect comparable reductions in the compensation payable to
                  the other participants in such plans, or (z) increases the
                  compensation payable to other participants in any of such
                  plans but which does not effect corresponding increases in the
                  amount of compensation payable to the Employee; or

                         (E)  a transfer of the Employee, without his express
                  written consent, to a location which is outside the general
                  metropolitan area in which his principal place of business
                  immediately preceding the Change of Control may be located, or
                  which is otherwise an unreasonable commuting distance from the
                  Employee's principal residence at the date of the Change of
                  Control.

            2.  NOTICE OF TERMINATION.  Any Termination upon a Change of
Control shall be communicated by a Notice of Termination to the other party
hereto given in accordance with Section 12 hereof.  For purposes of this
Agreement, a "Notice of Termination" means a written notice which (i) indicates
the specific termination provision in this Agreement relied upon, (ii) briefly
summarizes the facts and circumstances deemed to provide a basis for termination
of the Employee's employment under the provision so indicated, and (iii) if the
termination date is other than the date of receipt of such notice, specifies the
termination date (which date shall not be more than 15 days after the giving of
such notice).


                                       5



<PAGE>



            3.    SEVERANCE COMPENSATION UPON TERMINATION.

            (a)   Subject to the adjustments provided in paragraph (b) below and
Section 9(a) hereof, in the event of the Employee's Termination upon a Change of
Control, the Company shall pay to the Employee, within 15 days after the
Termination Date, an amount in cash equal to two times the sum of paragraphs (i)
and (ii) below:

                  (i)    the Employee's Base Salary in effect either immediately
            prior to the Termination of Employment or immediately prior to the
            Change of Control, whichever is higher; and

                  (ii)   the average of the annual bonuses earned by the
            Employee under any Bonus Plan in the two fiscal years immediately
            prior to such Termination of Employment.

            (b)   In the event the Employee's Normal Retirement Date would occur
prior to 24 months after the Termination Date, the aggregate cash amount
determined as set forth in (a) above shall be reduced by multiplying it by a
fraction, the numerator of which shall be the number of days from the
Termination Date to the Employee's Normal Retirement Date and the denominator of
which shall be 730.  No payments shall be due Employee in the event that the
Normal Retirement Date has been reached prior to the Termination Date.

            4.    OTHER PAYMENTS.  In the event of the Employee's Termination
upon a Change of Control, the Company shall also:

            (a)   pay to the Employee within 15 days after the Termination Date,
unless the Employee has exercised such options and rights, an amount equal to
the excess, if any, of the aggregate fair market value of the shares of
Enterra's Common Stock subject to all stock options and stock appreciation
rights outstanding arid unexercised immediately prior to the Termination Date,
whether vested or unvested, granted to the Employee under the Stock Plan, over
the aggregate exercise price of all such stock options.  Upon such payment, the
options or rights shall terminate.  For purposes of this paragraph, fair market
value shall mean the highest of (x) the closing price of Enterra's Common Stock
on the business day immediately preceding the Termination Date, if such Common
Stock is publicly traded at such date, (y) if such Common Stock is not publicly
traded at the Termination Date, the value determined by an independent
appraiser, such appraiser to be selected by the Employee and to be reasonably
satisfactory to the Company (the fees and expenses of such appraiser to be borne
by the Company), and (z) in respect of a Change of Control under


                                           6



<PAGE>



Section 1(e) (i) hereof, the highest per share price of Enterra's Common Stock
paid (in connection with the Change of Control or at any time thereafter) by
the Person or group whose acquisition of shares of Common Stock of Enterra has
given rise to a Change of Control;

            (b)   to the extent permitted by applicable law, continue or cause
to be continued until 24 months after the Termination Date, on the
cost-sharing basis (if any) in effect immediately prior to the Change of
Control, medical, dental and life insurance benefits (and, at the option of
the Employee, disability insurance benefits) substantially equivalent in all
material respects to those furnished by the Company and its Subsidiaries to
the Employee immediately prior to the Change of Control; PROVIDED, HOWEVER,
that if the Employee's Normal Retirement Date would have occurred prior to 24
months after the Termination Date, the obligation of the Company to provide
such benefits shall cease at the Employee's Normal Retirement Date; and
PROVIDED FURTHER, HOWEVER, that the obligation of the Company to provide such
benefits shall cease at such time as the Employee is employed on a full time
basis by a corporation not owned or controlled by the Employee that provides
the Employee, on substantially the same cost-sharing basis (if any) between
the Company and the Employee in effect immediately prior to the Change of
Control, with medical, dental life and disability insurance benefits
substantially equivalent in all material respects to those furnished by the
Company and its Subsidiaries to the Employee immediately prior to the Change
of Control; and

            (c)   permit the Employee to receive any car allowance or continue
the use of his Company car, if any, without any cost for a period of six
months thereafter. Thereafter, the Employee shall return the car to the
Company unless, in the case of a car owned by the Company, the Employee
elects to purchase the car from the Company at the net book value thereof at
the date of the purchase or, in the case of a car leased by the Company, the
Employee pays the Company, as such amounts become due and payable, all rental
payments charged to the Company for the use of such car for the remainder of
the lease therefor.

            5.    VESTING AND ACCELERATION OF CERTAIN BENEFITS. In the event
of a Termination upon a Change of Control, all restrictions remaining on the
Termination Date on the restricted shares, if any, received by the Employee
pursuant to the Stock Plan shall lapse, and said shares shall thereupon be owned
by the Employee free and clear of all restrictions of any nature whatsoever,
except those, if any, under applicable U.S. federal and state securities laws.



                                           7



<PAGE>



            6.    ENFORCEMENT.

            (a)   In the event that the Company shall fail or refuse to make
payment of any amounts due the Employee under Sections 3, 4 and 5 hereof within
the respective time periods provided therein, the Company shall pay to the
Employee, in addition to the payment of any other sums provided in this
Agreement, interest, compounded daily, on any amount remaining unpaid from the
date payment is required under Section 3, 4 or 5, as appropriate, until paid to
the Employee, at the rate from time to time announced by Wells Fargo Bank, N.A.
as its "prime rate" plus 2%, each change in such rate to take effect on the
effective date of the change in such prime rate.

            (b)   It is the intent of the parties that the Employee not be
required to incur any expenses associated with the enforcement of his rights
under this Agreement by arbitration, litigation or other legal action because
the cost and expense thereof would substantially detract from the benefits
intended to be extended to the Employee hereunder. Accordingly, the Company
shall pay the Employee on demand the amount necessary to reimburse the Employee
in full for all expenses (including all attorneys' fees and legal expenses)
incurred by the Employee in enforcing any of the obligations of the Company
under this Agreement.

            7.    NO MITIGATION.  The Employee shall not be required to
mitigate the amount of any payment or benefit provided for in this Agreement by
seeking other employment or otherwise.

            8.    NON-EXCLUSIVITY OF RIGHTS.  Nothing in this Agreement shall
prevent or limit the Employee's continuing or future participation in or rights
under any benefit, bonus, incentive or other plan or program provided by
Enterra, the Company or any of the Company's Subsidiaries or Affiliates and for
which the Employee may qualify.

            9.    COORDINATION OF BENEFITS; NO SET-OFF; TAXES.

            (a)   The severance plan or policy, if any, applicable to employees
of the Company or any Subsidiary which employs the Employee, and any other
severance payments required by employment contracts or statutes or provided
under government programs may provide compensation and benefits to the Employee
upon events which also constitute a Termination upon a Change of Control as
defined in this Agreement.  In such event, Employee shall be entitled only to
the largest cash compensation provided for under any of such agreements, plans,
policies, statutes or programs and the maximum benefit continuance provided for
under any of such


                                           8



<PAGE>



agreements, plans, policies, statues or programs, and the payments referred to
in Section 3 hereof shall be reduced to the extent necessary to effect such
coordination of benefits.

            (b)   Except as specifically set forth in (a) above, the Company's
obligation to make the payments provided for in this Agreement and otherwise to
perform its obligations hereunder shall not be affected by any circumstances,
including, without limitation, any set-off, counterclaim, recoupment, defense or
other right which the Company may have against the Employee or others.

            (c)   Employee alone, and not Enterra, the Company or any
Subsidiary, shall be responsible for the payment of all taxes in respect of the
payments to be made and benefits to be provided under this Agreement.

            10.   SETTLEMENT OF ALL DISPUTES.

            (a)   Any dispute, controversy or claim arising out of or relating
to any provision of this Agreement or the Employee's Termination upon a Change
of Control shall be settled by arbitration in the City of Houston, Texas, in
accordance with the commercial arbitration rules then in effect of the American
Arbitration Association, before a panel of three arbitrators, one of whom shall
be selected by the Company, one of whom shall be selected by the Employee and
the third of whom shall be selected by the other two arbitrators.  Each
arbitrator selected as provided herein is required to be or have been a director
or an executive officer of a corporation whose shares of common stock were
listed during at least one year of such service on the New York Stock Exchange
or the American Stock Exchange or quoted on the National Association of
Securities Dealers Automated Quotations System.  Any award entered by the
arbitrators shall be final, binding and nonappealable and judgment may be
entered thereon by any party in accordance with applicable law in any court of
competent jurisdiction.  This arbitration provision shall be specifically
enforceable.  The fees of the American Arbitration Association and the
arbitrators and any expenses relating to the conduct of the arbitration shall be
paid by the Company.

            (b)   The party or parties challenging the right of the Employee to
the benefits of this Agreement shall in all circumstances have the burden of
proof.

            11.   TERM OF AGREEMENT.  This Agreement shall commence as of the
date first written above and shall continue in effect until the earlier of (i)
March 31, 1998 or such earlier date upon which the Employee ceases to be in the
employ of the Company or any Subsidiary thereof for any


                                           9



<PAGE>



reason other than a Termination Upon a Change of Control, or (ii) 24 months
after a Change of Control has occurred, PROVIDED, HOWEVER, that all of the
obligations of the parties hereunder arising after a Change of Control shall
continue in effect until such obligations are satisfied or have expired.

            12.   NOTICES.  All notices and other communications required or
permitted hereunder or necessary or convenient in connection herewith shall be
in writing and may be delivered personally or mailed by overnight express
courier service, as follows:

            If to the Company, to:

            Enterra Corporation
            2707 North Loop West
            Suite 1050
            Houston, TX 77008
            USA
            Attention:    The Chairman


            With a required copy to:

            Morgan, Lewis & Bockius
            2000 One Logan Square
            Philadelphia, PA 19103
            USA
            Attention:    David R. King, Esq.


            If to the Employee, to:

            Michael Peter Smith
            Tudor House
            Forest Lane
            Carr Hall Road
            Barrowford Nr. Nelson
            Lancashire BB9 5QL
            England

or to such other names or addresses as the Company or the Employee, as the case
may be, shall designate by notice to the other party hereto in the manner
specified in this Section.  Any such notice shall be deemed delivered and
effective when received in the case of personal delivery, on the next business
day in the case of overnight express courier service or when actually received
if sent in any other fashion.

            13.   GOVERNING LAW.  THIS AGREEMENT SHALL BE GOVERNED BY AND
INTERPRETED UNDER THE LAWS OF THE STATE OF


                                        10



<PAGE>



DELAWARE, UNITED STATES OF AMERICA, WITHOUT GIVING EFFECT TO
SUCH STATE'S CONFLICT OF LAWS PROVISIONS.

            14.   CONTENTS OF AGREEMENT, AMENDMENT AND ASSIGNMENT.

            (a)   This Agreement supersedes all prior agreements and sets forth
the entire understanding between the parties hereto with respect to the subject
matter hereof and cannot be changed, modified, extended or terminated except
upon written amendment executed by (i) the Employee and (ii) after approval by
the directors of the Company and, in writing, by the chief executive officer of
Enterra, by a duly authorized director of the Company other than the Employee.
The provisions of this Agreement may provide for payments to the Employee under
certain compensation, bonus or stock option plans under circumstances where such
plans would not provide for payment thereof.  It is the specific intention of
the parties that the provisions of this Agreement shall supersede any provisions
to the contrary in such plans, and such plans shall be deemed to have been
amended to correspond with this Agreement without further action by the Company
or Enterra.

            (b)   Nothing in this Agreement shall be construed as giving the
Employee any right to be retained in the employ of Enterra, the Company or any
Subsidiary of either.

            (c)   The Employee acknowledges that from time to time, Enterra, the
Company and their Subsidiaries may establish, maintain and distribute employee
manuals or handbooks or personnel policy manuals, and officers or other
representatives thereof may make written or oral statements relating to
personnel policies and procedures.  Such manuals, handbooks and statements are
intended only for general guidance.  No policies, procedures or statements of
any nature by or on behalf of Enterra, the Company or any Subsidiary of either
(whether written or oral, and whether or not contained in any employee manual or
handbook or personnel policy manual), and no acts or practices of any nature,
shall be construed to modify this Agreement.

            (d)   All of the terms and provisions of this Agreement shall be
binding upon and inure to the benefit of and be enforceable by the respective
heirs, representatives, successors and assigns of the parties hereto, except
that the duties and responsibilities of the Employee and the Company hereunder
shall not be assignable in whole or in part by the Company.

            15.   SEVERABILITY.  If any provision of this Agreement or
application thereof to anyone or under any circumstances shall be determined to
be invalid or


                                        11



<PAGE>



unenforceable, such invalidity or unenforceability shall not affect any other
provisions or applications of this Agreement which can be given effect without
the invalid or unenforceable provision or application.

            16.   REMEDIES CUMULATIVE - NO WAIVER.  No right conferred upon the
Employee by this Agreement is intended to be exclusive of any other right or
remedy, and each and every such right or remedy shall be cumulative and shall be
in addition to any other right or remedy given hereunder or now or hereafter
existing at law or in equity.  No delay or omission by the Employee in
exercising any right, remedy or power hereunder or existing at law or in equity
shall be construed as a waiver thereof, including without limitation any delay
by the Employee in delivering a Notice of Termination pursuant to Section 2
hereof after an event has occurred which would, if the Employee had resigned,
have constituted a Termination upon a Change of Control pursuant to Section
1(l)(ii) of this Agreement.

            17.   MISCELLANEOUS.  All section headings are for convenience
only.  This Agreement may be executed in several counterparts, each of which
shall be an original.  It shall not be necessary in making proof of this
Agreement or any counterpart hereof to produce or account for any of the other
counterparts.


            IN WITNESS WHEREOF, the undersigned, intending to be legally bound,
have executed this Agreement as of the date first above written.



The COMMON SEAL of            )
PIPELINE INDUCTION HEAT       )
LIMITED was hereunto          )
affixed in the presence       )
of:-                          )


/s/ Charles Evans
Director



Secretary



SIGNED SEALED and DELIVERED         )
by the said MICHAEL PETER           )/s/ M. Smith
SMITH in the presence of:-          )

/s/ P. L. Morgan


                                        12

<PAGE>



                              SEVERANCE AGREEMENT



            Agreement made as of February 21, 1991 between Enterra Corporation,
a Delaware corporation (the "Company"), and Michael L. Stansberry (the
"Employee").

            WHEREAS, the Employee is presently employed by Oil Field Rental
Service Company, a "Subsidiary" (as defined in Section 1 hereof), as its
President;

            WHEREAS, the Company considers it essential to foster the employment
of well qualified key management personnel for the Company and its Subsidiaries,
and, in this regard, the board of directors of the Company recognizes that, as
is the case with many publicly held corporations, the possibility of a change in
control of the Company may exist and that such possibility, and the uncertainty
and questions which it may raise among management, may result in the departure
or distraction of key management personnel to the detriment of the Company;

            WHEREAS, the board of directors of the Company has determined that
appropriate steps should be taken to reinforce and encourage the continued
attention and dedication of key members of the management of the Company and its
Subsidiaries to their assigned duties without distraction in the face of
potentially disturbing circumstances arising from the possibility of a change in
control of the Company, although no such change is now contemplated; and

            WHEREAS, in order to induce the Employee to remain in the employ of
the Subsidiary, the Company agrees that the Employee shall receive the
compensation and benefits set forth in this Agreement in the event his
employment with the Company is terminated subsequent to a "Change of Control"
(as defined in Section 1 hereof) of the Company as a cushion against the
financial and career impact on the Employee of any such Change of Control;

            NOW, THEREFORE, in consideration of the foregoing and the mutual
covenants and agreements hereinafter set forth and intending to be legally bound
hereby, the parties hereto agree as follows:

            1.  DEFINITIONS.  For all purposes of this Agreement, the
following terms shall have the meanings specified in this Section unless the
context clearly otherwise requires:



<PAGE>



            (a)   "Affiliate" and "Associate" shall have the respective meanings
ascribed to such terms in Rule 12b-2 of the General Rules and Regulations under
the Securities Exchange Act of 1934, as amended (the "Exchange Act").

            (b)   "Base Salary" shall mean the total cash remuneration earned by
the Employee on an annualized basis in all capacities with the company and its
Subsidiaries, including any compensation the payment of which has been deferred
pursuant to a salary reduction or deferral plan (including a 401(k) plan, other
than company matching contributions) or agreement, but exclusive of any cash
payments made to him under the company's Bonus Plan, or any contributions made
for his benefit to the Company's 401(k) Plan or CRC-Evans Plan.

            (c)   A Person shall be deemed the "Beneficial Owner" of any
securities:

                  (i)   that such Person or any of such Person's Affiliates or
            Associates, directly or indirectly, has the right to acquire
            (whether such right is exercisable immediately or only after the
            passage of time) pursuant to any agreement, arrangement or
            understanding (whether or not in writing) or upon the exercise of
            conversion rights, exchange rights, rights, warrants or options, or
            otherwise; PROVIDED, HOWEVER, that a Person shall not be deemed
            the "Beneficial Owner" of securities tendered pursuant to a tender
            or exchange offer made by such Person or any of such Person's
            Affiliates or Associates until such tendered securities are accepted
            for payment, purchase or exchange;

                  (ii)  that such Person or any of such Person's Affiliates or
            Associates, directly or indirectly, has the right to vote or dispose
            of or has "beneficial ownership" of (as determined pursuant to Rule
            13d-3 of the General Rules and Regulations under the Exchange Act),
            including without limitation pursuant to any agreement, arrangement
            or understanding, whether or not in writing; PROVIDED, HOWEVER,
            that a Person shall not be deemed the "Beneficial Owner" of any
            security under this subsection (ii) as a result of an oral or
            written agreement, arrangement or understanding to vote such
            security if such agreement, arrangement or understanding (a) arises
            solely from a revocable proxy given in response to a public proxy or
            consent solicitation made pursuant to, and in accordance with, the
            applicable provisions of


                                       2



<PAGE>



            the General Rules and Regulations under the Exchange Act, and (b) is
            not then reportable by such Person on Schedule 13D under the
            Exchange Act (or any comparable or successor report); or

                  (iii) that are beneficially owned, directly Or indirectly, by
            any other Person (or any Affiliate or Associate thereof) with which
            such Person (or any of such Person's Affiliates or Associates) has
            any agreement, arrangement or understanding (whether or not in
            writing) for the purpose of acquiring, holding, voting (except,
            pursuant to a revocable proxy as described in the proviso to
            subsection (ii) above or the May 2, 1986 option agreement between
            Shamrock Holdings, Inc. and the shareholders known as the "SGS
            Group" or their successors) or disposing of any voting securities of
            the Company;

PROVIDED, HOWEVER, that nothing in this Section 1(c) shall cause a Person
engaged in business as an underwriter of securities to be the "Beneficial Owner"
of any securities acquired through such Person's participation in good faith in
a firm commitment underwriting until the expiration of forty days after the date
of such acquisition.

            (d)   "Board" shall mean the board of directors of the Company.

            (e)   "Bonus Plan" shall mean the Company's Management Incentive
Bonus Plan, as in effect immediately prior to a Change of Control.

            (f)   "Change of control" shall be deemed to have taken place if (i)
any Person (except the Company, any Subsidiary of the Company, any employee
benefit plan of the Company or of any Subsidiary of the Company, any Person or
entity organized, appointed or established by the Company for or pursuant to the
terms of any such employee benefit plan, or an Exempted Person), together with
all Affiliates and Associates of such Person acting in concert as described in
Section 14(d) (2) of the Exchange Act, shall become the Beneficial Owner in the
aggregate of 30% or more of the Common Stock of the Company then outstanding
within the meaning of Rule 13d-3 promulgated under the Exchange Act.

            (g)   "CRC-Evans Plan" shall mean the CRC-Evans Money Purchase
Pension Plan, as in effect immediately prior to a Change of Control.

            (h)   "Exempted Person" shall mean any of Shamrock
Holdings of California, Inc., a Delaware corporation


                                       3



<PAGE>



("Shamrock"), Shamrock Holdings, Inc., a Delaware corporation ("Shamrock
Holdings"), or any Affiliate or Associate of Shamrock or Shamrock Holdings.
"Exempted Person" shall not include transferees from any Exempted Person except
where such transferees are Affiliates or Associates of Shamrock or Shamrock
Holdings.

            (i)   "401(k) Plan" shall mean the Company's 401(k) Plan, as in
effect immediately prior to a Change of Control.

            (j)   "Normal Retirement Date" shall mean the first day of the
calendar month coincident with or next following the Employee's 65th birthday.

            (k)   "Person" shall mean any individual, firm, corporation,
partnership or other entity.

            (l)   "Stock Plan" shall mean the Company's Stock Option Plan or any
successor plan thereto, as in effect immediately prior to a Change of Control.

            (m)   "Subsidiary" shall have the meaning ascribed to such term in
Rule 12b-2 of the General Rules and Regulations under the Exchange Act.

            (n)   "Termination Date" shall mean the date of receipt of the
Notice of Termination described in Section 2 hereof or any later date specified
therein, as the case may be.

            (o)   "Termination of Employment" shall mean the termination of the
Employee's actual employment relationship with the Company.

            (p)   "Termination upon a Change of Control" shall mean a
Termination of Employment upon or within two years after a Change of Control
either:

                  (i)   initiated by the Company for any reason other than (x)
            the Employee's continuous illness, injury or incapacity for a period
            of six consecutive months, (y) for "cause," which shall mean
            misappropriation of funds, habitual insobriety, substance abuse,
            conviction of a crime involving moral turpitude, or gross negligence
            in the performance of his duties, which gross negligence has had a
            material adverse effect on the business, operations, assets,
            properties or financial condition of the Company and its
            Subsidiaries taken as a whole, or (z) by reason of the occurrence of
            the Normal Retirement Date; or


                                       4



<PAGE>



               (ii) initiated by the Employee following one or more of the
          following occurrences:

                    (A)   a significant reduction by the Company or its
               Subsidiaries of the authority, duties or responsibilities of the
               Employee immediately prior to the Change of Control;

                    (B)   any removal of the Employee from or any failure to
               re-elect the Employee to the officer positions with the Company
               and its Subsidiaries held by him immediately prior to the Change
               of Control, except in connection with promotions to higher office
               or in connection with consolidations among the Company's
               Subsidiaries where the Employee is elected to similar positions
               in the successor company or companies;

                    (C)   a reduction by the Company in the Employee's Base
               Salary as in effect immediately prior to the Change of Control;

                    (D)   revocation or any modification (except as may be
               required in the normal course of business in light of any
               requirement of or change in federal law or regulations) of the
               Bonus Plan, 401(k) Plan or CRC-Evans Plan, or any action taken
               pursuant to the terms of such plans, which materially (x) reduces
               the opportunity to receive compensation under any of such plans
               of equivalent amounts received by the Employee during the two
               fiscal years immediately preceding the Change of Control, subject
               to the right of the Board to establish in a manner consistent
               with past practice prior to the Change of Control reasonable
               goals under such plans, (y) reduces the compensation payable to
               the Employee under any of such plans but which does not effect
               comparable reductions in the compensation payable to the other
               participants in such plans, or (z) increases the compensation
               payable to other participants in any of such plans but which
               does not effect corresponding increases in the amount of
               compensation payable to the Employee; or

                    (E)   a transfer of the Employee, without his express
               written consent, to a location which is outside the general
               metropolitan area in which his principal place of business


                                        5



<PAGE>



               immediately preceding the Change of Control may be located, or
               which is otherwise an unreasonable commuting distance from the
               Employee's principal residence at the date of the Change of
               Control.

            2.   NOTICE OF TERMINATION.  Any Termination upon a Change of
Control shall be communicated by a Notice of Termination to the other party
hereto given in accordance with Section 14 hereof. For purposes of this
Agreement, a "Notice of Termination" means a written notice which (i) indicates
the specific termination provision in this Agreement relied upon, (ii) briefly
summarizes the facts and circumstances deemed to provide a basis for termination
of the Employee's employment under the provision so indicated, and (iii) if the
termination date is other than the date of receipt of such notice, specifies the
termination date (which date shall not be more than 15 days after the giving of
such notice).

            3.   SEVERANCE COMPENSATION UPON TERMINATION.

            (a)  Subject to the provisions of Section 10 hereof and to
adjustment as provided in paragraph (b) below and Section 9(a), in the event of
the Employee's Termination upon a Change of Control, the Company shall pay to
the Employee, within fifteen days after the Termination Date (or as soon as
possible thereafter in the event that the procedures set forth in Section 10(b)
hereof cannot be completed within 15 days), an amount in cash equal to two times
the sum of paragraphs (i) and (ii) below:

                 (i)   The Employee's Base Salary in effect either immediately
            prior to the Termination of Employment or immediately prior to the
            Change of Control, whichever is higher; and

                 (ii)  The average of the annual bonuses earned by the Employee
            under the Bonus Plan in the two fiscal years immediately prior to
            such Termination of Employment.

            (b)  In the event the Employee's Normal Retirement Date would occur
prior to twenty-four months after the Termination Date, the aggregate cash
amount determined as set forth in (a) above shall be reduced by multiplying it
by a fraction, the numerator of which shall be the number of days from the
Termination Date to the Employee's Normal Retirement Date and the denominator of
which shall be 730.  No payments shall be due Employee in the event that the
Normal Retirement Date has been reached prior to the Termination Date.


                                       6



<PAGE>



            4.   OTHER PAYMENTS. Subject to the provisions of Section 10
hereof, in the event of the Employee's Termination upon a Change of Control, the
Company shall:

            (a)  pay to the Employee within fifteen days after the Termination
Date, unless the Employee has exercised such options and rights, an amount equal
to the excess, if any, of the aggregate fair market value of the shares of the
Company's Common Stock subject to all stock options and stock appreciation
rights outstanding and unexercised immediately prior to the Termination Date,
whether vested or unvested, granted to the Employee under the Stock Plan, over
the aggregate exercise price of all such stock options. For purposes of this
paragraph, fair market value shall mean the highest of (x) the closing price of
the Company's Common Stock on the business day immediately preceding the
Termination Date, if such Common Stock is publicly traded at such date, (y) if
such Common Stock is not publicly traded at the Termination Date, the value
determined by an independent appraiser, such appraiser to be selected by the
Employee and to be reasonably satisfactory to the Company (the fees and expenses
of such appraiser to be borne by the Company), or (z) the highest per share
price of the Company's Common Stock paid (in connection with the Change of
Control or at any time thereafter) by the Person or group whose acquisition of
shares of Common Stock of the Company has given rise to a Change of Control;

            (b)  to the extent permitted by applicable law, continue or cause
to be continued until 24 months after the Termination Date, on the cost-sharing
basis (if any) in effect immediately prior to the Change of Control, medical,
dental and life insurance benefits (and, at the option of the Employee,
disability insurance benefits) substantially equivalent in all material respects
to those furnished by the Company and its Subsidiaries to the Employee
immediately prior to the Change of Control; PROVIDED, HOWEVER, that if the
Employee's Normal Retirement Date would have occurred prior to 24 months after
the Termination Date, the obligation of the Company to provide such benefits
shall cease at the Employee's Normal Retirement Date; and PROVIDED FURTHER,
HOWEVER, that the obligation of the Company to provide such benefits shall
cease at such time as the Employee is employed on a full time basis by a
corporation not owned or controlled by the Employee that provides the Employee,
on substantially the same cost-sharing basis (if any) between the Company and
the Employee in effect immediately prior to the Change of Control, with medical,
dental, life and disability insurance benefits substantially equivalent in all
material respects to those furnished by the Company and its Subsidiaries to the
Employee immediately prior to the Change of Control;


                                         7



<PAGE>



            (c)  for vesting purposes only, in the event of a Termination upon
a Change of Control occurring prior to the Normal Retirement Date, credit the
Employee with the lesser of (i) two additional "years of service" (as defined in
the Company's 401(k) Plan) or (ii) the period of time from the Termination Date
to the Normal Retirement Date under each of the Company's 401(k) Plan and
CRC-Evans Plan, in addition to the years of service that would have otherwise
been calculated by reference solely to the Termination Date, it being understood
that benefits in respect of the two additional years of service shall be paid to
the Employee under the Company's 401(k) Plan or CRC-Evans Plan, and that the
Company shall, to the extent necessary to provide the Employee the additional
benefits intended hereby, amend the 401(k) Plan or CRC-Evans Plan or pay such
additional benefits outside the plan as may be necessary; and

            (d)  permit the Employee to continue the use of his Company car, if
any, without any cost for a period of six months thereafter.  Thereafter, the
Employee shall return the car to the Company unless, in the case of a car owned
by the Company, the Employee elects to purchase the car from the Company at the
net book value thereof at the date of the purchase or, in the case of a car
leased by the Company, the Employee pays the Company, as such amounts become due
and payable, all rental payments charged to the Company for the use of such car
for the remainder of the lease therefore.

            5.   VESTING AND ACCELERATION OF CERTAIN BENEFITS. In the event
of a Termination upon a Change of Control, and subject to the provisions of
Section 10 hereof, all restrictions remaining on the Termination Date on the
restricted shares, if any, received by the Employee, pursuant to the Stock Plan
shall lapse, and said shares shall thereupon be owned by the Employee free and
clear of all restrictions of any nature whatsoever, except those, if any, under
applicable federal and state securities laws.

            6.   ENFORCEMENT.

            (a)  In the event that the Company shall fail or refuse to make
payment of any amounts due the Employee under Sections 3, 4 and 5 hereof within
the respective time periods provided therein, the Company shall pay to the
Employee, in addition to the payment of any other sums provided in this
Agreement, interest, compounded daily, on any amount remaining unpaid from the
date payment is required under Section 3, 4 or 5, as appropriate, until paid to
the Employee, at the rate from time to time announced by Wells Fargo Bank, N.A.
as its "prime rate" plus 2%, each change in such rate to take effect on the
effective date of the change in such prime rate.


                                         8



<PAGE>



            (b)  It is the intent of the parties that the Employee not be
required to incur any expenses associated with the enforcement of his rights
under this Agreement by arbitration, litigation or other legal action because
the cost and expense thereof would substantially detract from the benefits
intended to be extended to the Employee hereunder. Accordingly, the Company
shall pay the Employee on demand the amount necessary to reimburse the Employee
in full for all expenses (including all attorneys' fees and legal expenses)
incurred by the Employee in enforcing any of the obligations of the Company
under this Agreement.

            7.   NO MITIGATION. The Employee shall not be required to
mitigate the amount of any payment or benefit provided for in this Agreement by
seeking other employment or otherwise.

            8.   NON-EXCLUSIVITY OF RIGHTS. Nothing in this Agreement shall
prevent or limit the Employee's continuing or future participation in or rights
under any benefit, bonus, incentive or other plan or program provided by the
Company or any of its Subsidiaries or Affiliates and for which the Employee may
qualify.

            9.   COORDINATION OF BENEFITS; NO SET-OFF; TAXES.

            (a)  The severance plan or policy, if any, applicable to employees
of Enterra or the Subsidiary which employs the Employee, and any other severance
payments required by applicable statutes or provided under government programs
may provide compensation and benefits to Employee upon events which also
constitute a Termination upon a Change of Control as defined in this Agreement.
In such event, Employee shall be entitled only to the largest cash compensation
provided for under any of such agreements, plans, policies, statutes or programs
and the maximum benefit continuance provided for under any of such agreements,
plans, policies, statues or programs, and the payments referred to in Section 3
hereof shall be reduced to the extent necessary to effect such coordination of
benefits.

            (b)  Except as specifically set forth in (a) above, the Company's
obligation to make the payments provided for in this Agreement and otherwise to
perform its obligations hereunder shall not be affected by any circumstances,
including, without limitation, any set-off, counterclaim, recoupment, defense or
other right which the Company may have against the Employee or others.

            (c)  Employee alone, and not the Company or any Subsidiary, shall
be responsible for the payment of all


                                           9



<PAGE>



federal, state and local taxes in respect of the payments to be made and
benefits to be provided under this Agreement.

            10.  CERTAIN REDUCTION OF PAYMENTS.

            (a)  Anything in this Agreement to the contrary notwithstanding, in
the event that it shall be determined as set forth herein that any payment or
distribution by the Company to or for the benefit of the Employee, whether paid
or payable or distributed or distributable pursuant to the terms of this
Agreement or otherwise (a "Payment"), would constitute an "excess parachute
payment" within the meaning of Section 28OG of the Internal Revenue Code of
1986, as amended (the "Code"), and that it would be economically advantageous to
the Company to reduce the Payment to avoid or reduce the taxation of excess
parachute payments under Section 4999 of the Code, the aggregate present value
of amounts payable or distributable to or for the benefit of the Employee
pursuant to this Agreement (such payments or distributions pursuant to this
Agreement are hereinafter referred to as "Agreement Payments") shall be reduced
(but not below zero) to the Reduced Amount. The "Reduced Amount" shall be an
amount expressed in present value which maximizes the aggregate present value of
Agreement Payments without causing any Payment to be subject to the taxation
under Section 4999 of the Code. For purposes of this Section 10, present value
shall be determined in accordance with Section 280G(d)(4) of the Code.

            (b)  All determinations to be made under this Section 10 shall be
made by Peat Marwick Main & Co., or the Company's independent public accountant
immediately prior to the Change of Control if other than Peat Marwick Main & Co.
(the "Accounting Firm"), which firm shall use its best efforts to provide its
determinations and any supporting calculations both to the Company and the
Employee within 10 days of the Termination Date. Any such determination by the
Accounting Firm shall be binding upon the Company and the Employee. The Company
shall in its sole discretion determine which and how much of the Agreement
Payments shall be eliminated or reduced consistent with the requirements of this
Section 10. Within five days after the Company's determination, the Company
shall pay (or cause to be paid) or distribute (or cause to be distributed) to or
for the benefit of the Employee such amounts as are then due to the Employee
under this Agreement.

            (c)  As a result of the uncertainty in the application of Section
280G of the Code at the time of the initial determination by the Accounting Firm
hereunder, it is possible that Agreement Payments, as the case may be, will have
been made by the Company which should not have been made


                                          10



<PAGE>



("Overpayment") or that additional Agreement Payments which have not been made
by the Company could have been made ("Underpayment"), in each case, consistent
with the calculations required to be made hereunder. Within two years after the
Termination of Employment, the Accounting Firm shall review the determination
made by it pursuant to the preceding paragraph. In the event that the Accounting
Firm determines that an Overpayment has been made, any such Overpayment shall be
treated for all purposes as a loan to the Employee which the Employee shall
repay to the Company together with interest at the applicable Federal rate
provided for in Section 7872(f)(2) of the Code (the "Federal Rate"); PROVIDED,
HOWEVER, that no amount shall be payable by the Employee to the Company if and
to the extent such payment would not reduce the amount which is subject to
taxation under Section 4999 of the Code. In the event that the Accounting Firm
determines that an Underpayment has occurred, any such Underpayment shall be
promptly paid by the Company to or for the benefit of the Employee together with
interest at the Federal Rate.

            (d)  All of the fees and expenses of the Accounting Firm in
performing the determinations referred to in subsections (b) and (c) above shall
be borne solely by the Company. The Company agrees to indemnify and hold
harmless the Accounting Firm of and from any and all claims, damages and
expenses of any nature resulting from or relating to its determinations pursuant
to subsections (b) and (c) above, except for claims, damages or expenses
resulting from the gross negligence or willful misconduct of the Accounting
Firm.

            Il.  SETTLEMENT OF ALL DISPUTES.

            (a)  Any dispute, controversy or claim arising out of or relating to
any provision of this Agreement or the Employee's Termination upon a Change of
Control shall be settled by arbitration in the City of Houston, Texas, in
accordance with the commercial arbitration rules then in effect of the American
Arbitration Association, before a panel of three arbitrators, two of whom shall
be selected by the Company and the Employee, respectively, and the third of whom
shall be selected by the other two arbitrators. Each arbitrator selected as
provided herein is required to be or have been a director or an executive
officer of a corporation whose shares of common stock were listed during at
least one year of such service on the New York Stock Exchange or the American
Stock Exchange or quoted on the National Association of Securities Dealers
Automated Quotations System. Any award entered by the arbitrators shall be
final, binding and nonappealable and judgment may be entered thereon by any
party in accordance with applicable law in any court of


                                          11



<PAGE>



competent jurisdiction. This arbitration provision shall be specifically
enforceable. The fees of the American Arbitration Association and the
arbitrators and any expenses relating to the conduct of the arbitration shall be
paid by the Company.

            (b)  The party or parties challenging the right of the Employee to
the benefits of this Agreement shall in all circumstances have the burden of
proof.

            12.  TERM OF AGREEMENT. This Agreement shall commence as of the
date first written above and shall continue in effect until the earlier of (i)
the date upon which the Employee ceases to be in the employ of the Company or
any Subsidiary thereof for any reason other than a Termination Upon a Change of
Control, or (ii) 24 months after a Change of Control has occurred, PROVIDED,
HOWEVER, that all of the obligations of the parties hereunder arising after a
Change of Control shall continue in effect until such obligations are satisfied
or have expired.

            13.  SUCCESSOR COMPANY. The company shall require any successor or
successors (whether direct or indirect, by purchase, merger, consolidation or
otherwise) to all or substantially all of the business and/or assets of the
Company, by agreement in form and substance satisfactory to the Employee, to
acknowledge expressly that this Agreement is binding upon and enforceable
against the Company in accordance with the terms hereof, and to become jointly
and severally obligated with the Company to perform this Agreement in the same
manner and to the same extent that the Company would be required to perform if
no such succession or successions had taken place. Failure of the Company to
obtain such agreement prior to the effectiveness of any such succession shall be
a breach of this Agreement. As used in this Agreement, the Company shall mean
the Company as hereinbefore defined and any such successor or successors to its
business and/or assets, jointly and severally.

            14.  NOTICE. All notices and other communications required or
permitted hereunder or necessary or convenient in connection herewith shall be
in writing and shall be delivered personally or mailed by registered or
certified mail, return receipt requested, or by overnight express courier
service, as follows:

            If to the Company, to:

            Enterra Corporation
            2707 North Loop West
            Suite 1050
            Houston, TX  77008


                                          12



<PAGE>



            Attention:  The Chairman

            With a required copy to:

            Morgan, Lewis & Bockius
            2000 One Logan Square
            Philadelphia, PA  19103
            Attention:  David R. King, Esq.

            If to the Employee, to:

            Michael L. Stansberry
            c/o Oil Field Rental Service Company
            P.  O. Box 1331
            Houston, TX 77251-1331

or to such other names or addresses as the Company or the Employee, as the case
may be, shall designate by notice to the other party hereto in the manner
specified in this Section.  Any such notice shall be deemed delivered and
effective when received in the case of personal delivery, five days after
deposit, postage prepaid, with the U.S. Postal service in the case of registered
or certified mail, or on the next business day in the case of overnight express
courier service.

            15.  GOVERNING LAW.  THIS AGREEMENT SHALL BE GOVERNED BY AND
INTERPRETED UNDER THE LAWS OF THE STATE OF DELAWARE WITHOUT GIVING EFFECT TO ANY
CONFLICT OF LAWS PROVISIONS.

            16.  CONTENTS OF AGREEMENT, AMENDMENT AND ASSIGNMENT.

            (a)  This Agreement supersedes all prior agreements and sets forth
the entire understanding between the parties hereto with respect to the subject
matter hereof and cannot be changed, modified, extended or terminated except
upon written amendment executed by the Employee and approved by the board and
executed on the Company's behalf by a duly authorized officer.  The provisions
of this Agreement may provide for payments to the Employee under certain
compensation or bonus plans (including without limitation the Stock Plan, the
Bonus Plan, the 401(k) Plan and the CRC-Evans Plan) under circumstances where
such plans would not provide for payment thereof.  It is the specific intention
of the parties that the provisions of this Agreement shall supersede any
provisions to the contrary in such plans, and such plans shall be deemed to have
been amended to correspond with this


                                        13



<PAGE>



Agreement without further action by the Company or the Board.

            (b)  Nothing in this Agreement shall be construed as giving the
Employee any right to be retained in the employ of the Company or any of its
Subsidiaries.

            (c)  The Employee acknowledges that from time to time, the Company
and its subsidiaries may establish, maintain and distribute employee manuals or
handbooks or personnel policy manuals, and officers or other representatives of
the Company or its Subsidiaries may make written or oral statements relating to
personnel policies and procedures. Such manuals, handbooks and statements are
intended only for general guidance. No policies, procedures or statements of any
nature by or on behalf of the Company or its Subsidiaries (whether written or
oral, and whether or not contained in any employee manual or handbook or
personnel policy manual), and no acts or practices of any nature, shall be
construed to modify this Agreement.

            (d)  All of the terms and provisions of this Agreement shall be
binding upon and inure to the benefit of and be enforceable by the respective
heirs, representatives, successors and assigns of the parties hereto, except
that the duties and responsibilities of the Employee and the Company hereunder
shall not be assignable in whole or in part by the Company.

            17.  SEVERABILITY. If any provision of this Agreement or
application thereof to anyone or under any circumstances shall be determined to
be invalid or unenforceable, such invalidity or unenforceability shall not
affect any other provisions or applications of this Agreement which can be given
effect without the invalid or unenforceable provision or application.

            18.  REMEDIES CUMULATIVE - NO WAIVER. No right conferred upon the
Employee by this Agreement is intended to be exclusive of any other right or
remedy, and each and every such right or remedy shall be cumulative and shall be
in addition to any other right or remedy given hereunder or now or hereafter
existing at law or in equity. No delay or omission by the Employee in exercising
any right, remedy or power hereunder or existing at law or in equity shall be
construed as a waiver thereof, including without limitation any delay by the
Employee in delivering a Notice of Termination pursuant to Section 2 hereof
after an event has occurred which would, if the Employee had resigned, have
constituted a Termination upon a Change of Control pursuant to Section 1(p)(ii)
of this Agreement.


                                        14



<PAGE>



            19.  MISCELLANEOUS.  All section headings are for convenience
only.  This Agreement may be executed in several counterparts, each of which is
an original.  It shall not be necessary in making proof of this Agreement or any
counterpart hereof to produce or account for any of the other counterparts.

            IN WITNESS WHEREOF, the undersigned, intending to be legally bound,
have executed this Agreement as of the date first above written.


Attest:                             ENTERRA CORPORATION



/s/ M. Gay Mather                   By: /s/ Steven C. Grant
- ------------------------------      ---------------------------------------
Secretary                           Steven C. Grant
                                    Sr. Vice President and
                                      Chief Financial Officer



/s/ Steven W. Krablin                 /s/ Michael L. Stansberry
- ------------------------------        -------------------------------------
Witness                               Michael L. Stansberry


                                      15

<PAGE>



                               SEVERANCE AGREEMENT


          Agreement made as of March 5, 1991 between Enterra Corporation, a
Delaware corporation (the "Company"), and D. Dale Wood (the "Employee").

          WHEREAS, the Employee has previously been employed by CRC-Evans
Pipeline International, Inc., a "Subsidiary" (as defined in Section 1 hereof);
and

          WHEREAS, on the date of this Agreement the Employee shall become
employed by the Company as its President and Chief Executive Officer;

          WHEREAS, the Company considers it essential to foster the employment
of well qualified key management personnel for the Company and its Subsidiaries,
and, in this regard, the board of directors of the Company recognizes that, as
is the case with many publicly held corporations, the possibility of a change in
control of the Company may exist and that such possibility, and the uncertainty
and questions which it may raise among management, may result in the departure
or distraction of key management personnel to the detriment of the Company;

          WHEREAS, the board of directors of the Company has determined that
appropriate steps should be taken to reinforce and encourage the continued
attention and dedication of key members of the management of the Company and its
Subsidiaries to their assigned duties without distraction in the face of
potentially disturbing circumstances arising from the possibility of a change in
control of the Company, although no such change is now contemplated; and

          WHEREAS, in order to induce the Employee to remain in the employ of
the Company, the Company agrees that the Employee shall receive the compensation
and benefits set forth in this Agreement in the event his employment with the
Company is terminated subsequent to a "Change of Control" (as defined in Section
1 hereof) of the Company as a cushion against the financial and career impact on
the Employee of any such Change of Control;

          NOW, THEREFORE, in consideration of the foregoing and the mutual
covenants and agreements hereinafter set forth and intending to be legally bound
hereby, the parties hereto agree as follows:

          1.   DEFINITIONS. For all purposes of this Agreement, the following
terms shall have the meanings

<PAGE>



specified in this Section unless the context clearly otherwise requires:

          (a)  "Affiliate" and "Associate" shall have the respective meanings
ascribed to such terms in Rule 12b-2 of the General Rules and Regulations under
the Securities Exchange Act of 1934, as amended (the "Exchange Act").

          (b)  "Base Salary" shall mean the total cash remuneration earned by
the Employee on an annualized basis in all capacities with the Company and its
Subsidiaries, including any compensation the payment of which has been deferred
pursuant to a salary reduction or deferral plan (including a 401(k) plan, other
than company matching contributions) or agreement, but exclusive of any cash
payments made to him under the Company's Bonus Plan, or any contributions made
for his benefit to the Company's 401(k) Plan or CRC-Evans Plan.

          (c)  A Person shall be deemed the "Beneficial Owner" of any
securities:

               (i)  that such Person or any of such Person's Affiliates or
          Associates, directly or indirectly, has the right to acquire (whether
          such right is exercisable immediately or only after the passage of
          time) pursuant to any agreement, arrangement or understanding (whether
          or not in writing) or upon the exercise of conversion rights, exchange
          rights, rights, warrants or options, or otherwise; PROVIDED, HOWEVER,
          that a Person shall not be deemed the "Beneficial Owner" of securities
          tendered pursuant to a tender or exchange offer made by such Person or
          any of such Person's Affiliates or Associates until such tendered
          securities are accepted for payment, purchase or exchange;

               (ii) that such Person or any of such Person's Affiliates or
          Associates, directly or indirectly, has the right to vote or dispose
          of or has "beneficial ownership" of (as determined pursuant to Rule
          13d-3 of the General Rules and Regulations under the Exchange Act),
          including without limitation pursuant to any agreement, arrangement or
          understanding, whether or not in writing; PROVIDED, HOWEVER, that a
          Person shall not be deemed the "Beneficial Owner" of any security
          under this subsection (ii) as a result of an oral or written
          agreement, arrangement or understanding to vote such security if such
          agreement, arrangement or understanding (A) arises solely from a
          revocable


                                        2

<PAGE>

          proxy given in response to a public proxy or consent solicitation made
          pursuant to, and in accordance with, the applicable provisions of the
          General Rules and Regulations under the Exchange Act, and (B) is not
          then reportable by such Person on Schedule 13D under the Exchange Act
          (or any comparable or successor report); or

               (iii) that are beneficially owned, directly or indirectly, by any
          other Person (or any Affiliate or Associate thereof) with which such
          Person (or any of such Person's Affiliates or Associates) has any
          agreement, arrangement or understanding (whether or not in writing)
          for the purpose of acquiring, holding, voting (except, pursuant to a
          revocable proxy as described in the proviso to subsection (ii) above)
          or disposing of any voting securities of the Company;

PROVIDED, HOWEVER, that nothing in this Section 1(c) shall cause a Person
engaged in business as an underwriter of securities to be the "Beneficial Owner"
of any securities acquired through such Person's participation in good faith in
a firm commitment underwriting until the expiration of forty days after the date
of such acquisition.

          (d)  "Board" shall mean the board of directors of the Company.

          (e)  "Bonus Plan" shall mean the Company's Management Incentive Bonus
Plan, as in effect immediately prior to a Change of Control.

          (f)  "Change of Control" shall be deemed to have taken place if (i)
any Person (except the Company, any Subsidiary of the Company, any employee
benefit plan of the Company or of any Subsidiary of the Company, any Person or
entity organized, appointed or established by the Company for or pursuant to the
terms of any such employee benefit plan, or an Exempted Person), together with
all Affiliates and Associates of such Person acting in concert as described in
Section 14(d) (2) of the Exchange Act, shall become the Beneficial Owner in the
aggregate of 30% or more of the Common Stock of the Company then outstanding
within the meaning of Rule 13d-3 promulgated under the Exchange Act.

          (g)  "CRC-Evans Plan" shall mean the CRC-Evans Money Purchase Pension
Plan, as in effect immediately prior to a Change of Control.

          (h)  "Exempted Person" shall mean any of Shamrock Holdings of
California, Inc., a Delaware corporation


                                        3

<PAGE>



("Shamrock"), Shamrock Holdings, Inc., a Delaware corporation ("Shamrock
Holdings"), or any Affiliate or Associate of Shamrock or Shamrock Holdings.
"Exempted Person" shall not include transferees from any Exempted Person except
where such transferees are Affiliates or Associates of Shamrock or Shamrock
Holdings.

          (i)  "401(k) Plan" shall mean the Company's 401(k) Plan, as in effect
immediately prior to a Change of Control.

          (j)  "Normal Retirement Date" shall mean the first day of the calendar
month coincident with or next following the Employee's 65th birthday.

          (k)  "Person" shall mean any individual, firm, corporation,
partnership or other entity.

          (l)  "Stock Plan" shall mean the Company's Stock Option Plan or any
successor plan thereto, as in effect immediately prior to a Change of Control.

          (m)  "Subsidiary" shall have the meaning ascribed to such term in Rule
12b-2 of the General Rules and Regulations under the Exchange Act.

          (n)  "Termination Date" shall mean the date of receipt of the Notice
of Termination described in Section 2 hereof or any later date specified
therein, as the case may be.

          (o)  "Termination of Employment" shall mean the termination of the
Employee's actual employment relationship with the Company.

          (p)  "Termination upon a Change of Control" shall mean a Termination
of Employment upon or within two years after a Change of Control either:

               (i)  initiated by the Company for any reason other than (x) the
          Employee's continuous illness, injury or incapacity for a period of
          twenty-six consecutive weeks, (y) for "cause," as defined in Section
          8.3 of the Employment Agreement between the Company and the Employee
          of even date herewith (the "Employment Agreement"), or (z) by reason
          of the occurrence of the Normal Retirement Date; or

               (ii) initiated by the Employee following one or more of the
          following occurrences:

                    (A) a significant reduction by the Company or its
               Subsidiaries of the authority,


                                        4

<PAGE>



               duties or responsibilities of the Employee immediately prior to
               the Change of Control;

                    (B)  any removal of the Employee from or any failure to re-
               elect the Employee to the officer positions with the Company and
               its Subsidiaries held by him immediately prior to the Change of
               Control, except in connection with promotions to higher office or
               in connection with consolidations among the Company's
               Subsidiaries where the Employee is elected to similar positions
               in the successor company or companies;

                    (C)  a reduction by the Company in the Employee's Base
               Salary as in effect immediately prior to the Change of Control;

                    (D)  revocation or any modification (except as may be
               required in the normal course of business in light of any
               requirement of or change in federal law or regulations) of the
               Bonus Plan, 401(k) Plan or CRC-Evans Plan, or any action taken
               pursuant to the terms of such plans, which materially (x) reduces
               the opportunity to receive compensation under any of such plans
               of equivalent amounts received by the Employee during the two
               fiscal years immediately preceding the Change of Control, subject
               to the right of the Board to establish in a manner consistent
               with past practice prior to the Change of Control reasonable
               goals under such plans, (y) reduces the compensation payable to
               the Employee under any of such plans but which does not effect
               comparable reductions in the compensation payable to the other
               participants in such plans, or (z) increases the compensation
               payable to other participants in any of such plans but which does
               not effect corresponding increases in the amount of compensation
               payable to the Employee; or

                    (E)  a transfer of the Employee, without his express written
               consent, to a location which is outside the general metropolitan
               area in which his principal place of business immediately
               preceding the Change of Control may be located, or which is
               otherwise an unreasonable commuting distance from the Employee's
               principal residence at the date of the Change of Control.


                                        5

<PAGE>



          2.  NOTICE OF TERMINATION.  Any Termination upon a Change of Control
shall be communicated by a Notice of Termination to the other party hereto given
in accordance with Section 14 hereof. For purposes of this Agreement, a "Notice
of Termination" means a written notice which (i) indicates the specific
termination provision in this Agreement relied upon, (ii) briefly summarizes the
facts and circumstances deemed to provide a basis for termination of the
Employee's employment under the provision so indicated, and (iii) if the
termination date is other than the date of receipt of such notice, specifies the
termination date (which date shall not be more than 15 days after the giving of
such notice).

          3.   SEVERANCE COMPENSATION UPON TERMINATION.

          (a)  Subject to the provisions of Section 10 hereof and to adjustment
as provided in paragraph (b) below and Section 9(a), in the event of the
Employee's Termination upon a "Change of Control, the Company shall pay to the
Employee, within fifteen days after the Termination Date (or as soon as possible
thereafter in the event that the procedures set forth in Section 10(b) hereof
cannot be completed within 15 days), an amount in cash equal to two times the
sum of paragraphs (i) and (ii) below:

               (i)  The Employee's Base Salary in effect either immediately
          prior to the Termination of Employment or immediately prior to the
          Change of Control, whichever is higher; and

               (ii) The average of the annual bonuses earned by the Employee
          under the Bonus Plan in the two fiscal years immediately prior to such
          Termination of Employment.

          (b) In the event the Employee's Normal Retirement Date would occur
prior to twenty-four months after the Termination Date, the aggregate cash
amount determined as set forth in (a) above shall be reduced by multiplying it
by a fraction, the numerator of which shall be the number of days from the
Termination Date to the Employee's Normal Retirement Date and the denominator of
which shall be 730.  No payments shall be due Employee in the event that the
Normal Retirement Date has been reached prior to the Termination Date.

          4.   OTHER PAYMENTS. Subject to the provisions of Section 10 hereof,
in the event of the Employee's Termination upon a Change of Control, the Company
shall:

          (a)  pay to the Employee within fifteen days after the Termination
Date, unless the Employee has exercised such


                                        6

<PAGE>



options and rights, an amount equal to the excess, if any, of the aggregate fair
market value of the shares of the Company's Common Stock subject to all stock
options and stock appreciation rights outstanding and unexercised immediately
prior to the Termination Date, whether vested or unvested, granted to the
Employee under the Stock Plan, over the aggregate exercise price of all such
stock options. For purposes of this paragraph, fair market value shall mean the
highest of (x) the closing price of the Company's Common Stock on the business
day immediately preceding the Termination Date, if such Common Stock is publicly
traded at such date, (y) if such Common Stock is not publicly traded at the
Termination Date, the value determined by an independent appraiser, such
appraiser to be selected by the Employee and to be reasonably satisfactory to
the Company (the fees and expenses of such appraiser to be borne by the
Company), or (z) the highest per share price of the Company's Common Stock paid
(in connection with the Change of Control or at any time thereafter) by the
Person or group whose acquisition of shares of Common Stock of the Company has
given rise to a Change of Control;

          (b) to the extent permitted by applicable law, continue or cause to be
continued until 24 months after the Termination Date, on the cost-sharing basis
(if any) in effect immediately prior to the Change of Control, medical, dental
and life insurance benefits (and, at the option of the Employee, disability
insurance benefits) substantially equivalent in all material respects to those
furnished by the Company and its Subsidiaries to the Employee immediately prior
to the Change of Control; PROVIDED, HOWEVER, that if the Employee's Normal
Retirement Date would have occurred prior to 24 months after the Termination
Date, the obligation of the Company to provide such benefits shall cease at the
Employee's Normal Retirement Date; and PROVIDED FURTHER, HOWEVER, that the
obligation of the Company to provide such benefits shall cease at such time as
the Employee is employed on a full time basis by a corporation not owned or
controlled by the Employee that provides the Employee, on substantially the same
cost-sharing basis (if any) between the Company and the Employee in effect
immediately prior to the Change of Control, with medical, dental, life and
disability insurance benefits substantially equivalent in all material respects
to those furnished by the Company and its Subsidiaries to the Employee
immediately prior to the Change of Control;

          (c) for vesting purposes only, in the event of a Termination upon a
Change of Control occurring prior to the Normal Retirement Date, credit the
Employee with the lesser of (i) two additional "years of service" (as defined in
the Company's 401(k) Plan) or (ii) the period of time from the Termination Date
to the Normal Retirement Date under each of


                                        7

<PAGE>



the Company's 401(k) Plan and CRC-Evans Plan, in addition to the years of
service that would have otherwise been calculated by reference solely to the
Termination Date, it being understood that benefits in respect of the two
additional years of service shall to the extent permitted by applicable law be
paid to the Employee under the Company's 401(k) Plan or CRC-Evans Plan,, and
that the Company shall, to the extent necessary to provide the Employee the
additional benefits intended hereby, amend the 401(k) Plan or CRC-Evans Plan or
pay such additional benefits outside the plan as may be necessary; and

          (d) permit the Employee to continue the use of his Company car, if
any, without any cost for a period of six months thereafter.  Thereafter, the
Employee shall return the car to the Company unless, in the case of a car owned
by the Company, the Employee elects to purchase the car from the Company at the
net book value thereof at the date of the purchase or, in the case of a car
leased by the Company, the Employee pays the Company, as such amounts become due
and payable, all rental payments charged to the Company for the use of such car
for the remainder of the lease therefore.

          5.   VESTING AND ACCELERATION OF CERTAIN BENEFITS. In the event of a
Termination upon a Change of Control, and subject to the provisions of Section
10 hereof, all restrictions remaining on the Termination Date on the restricted
shares, if any, received by the Employee, pursuant to the Stock Plan shall
lapse, and said shares shall thereupon be owned by the Employee free and clear
of all restrictions of any nature whatsoever, except those, if any, under
applicable federal and state securities laws.

          6.   ENFORCEMENT.

          (a) In the event that the Company shall fail or refuse to make payment
of any amounts due the Employee under Sections 3, 4 and 5 hereof within the
respective time periods provided therein, the Company shall pay to the
Employee, in addition to the payment of any other sums provided in this
Agreement, interest, compounded daily, on any amount remaining unpaid from the
date payment is required under Section 3, 4 or 5, as appropriate, until paid to
the Employee, at the rate from time to time announced by Wells Fargo Bank, N.A.
as its "prime rate" plus 2%, each change in such rate to take effect on the
effective date of the change in such prime rate.

          (b) It is the intent of the parties that the Employee not be required
to incur any expenses associated with the enforcement of his rights under this
Agreement by arbitration, litigation or other legal action because the


                                        8

<PAGE>



cost and expense thereof would substantially detract from the benefits intended
to be extended to the Employee hereunder. Accordingly, the Company shall pay the
Employee on demand the amount necessary to reimburse the Employee in full for
all expenses (including all attorneys' fees and legal expenses) incurred by the
Employee in enforcing any of the obligations of the Company under this
Agreement.

          7.   NO MITIGATION. The Employee shall not be required to mitigate the
amount of any payment or benefit provided for in this Agreement by seeking other
employment or otherwise.

          8.   NON-EXCLUSIVITY OF RIGHTS. Nothing in this Agreement shall
prevent or limit the Employee's continuing or future participation in or rights
under any benefit, bonus, incentive or other plan or program provided by the
Company or any of its Subsidiaries or Affiliates and for which the Employee may
qualify.

          9.   COORDINATION OF BENEFITS; NO SET-OFF; TAXES.

          (a)  The Employment Agreement, the severance plan or policy, if any,
applicable to employees of the Company or the Subsidiary which employs the
Employee, and any other severance payments required by applicable statutes or
provided under government programs may provide compensation and benefits to
Employee upon events which also constitute a Termination upon a Change of
Control as defined in this Agreement.  In such event, Employee shall be entitled
only to the largest cash compensation provided for under any of such agreements,
plans, policies, statutes or programs and the maximum benefit continuance
provided for under any of such agreements, plans, policies, statutes or
programs, and the payments referred to in Section 3 hereof shall be reduced to
the extent necessary to effect such coordination of benefits.

          (b)  Except as specifically set forth in (a) above, the Company's
obligation to make the payments provided for in this Agreement and otherwise to'
perform its obligations hereunder shall not be affected by any circumstances,
including, without limitation, any set-off, counterclaim, recoupment, defense or
other right which the Company may have against the Employee or others.

          (c)  Employee alone, and not the Company or any Subsidiary, shall be
responsible for the payment of all federal, state and local taxes in respect of
the payments to be made and benefits to be provided under this Agreement.


                                        9

<PAGE>



          10.  CERTAIN REDUCTION OF PAYMENTS.

          (a)  Anything in this Agreement to the contrary notwithstanding, in
the event that it shall be determined as set forth herein that any payment or
distribution by the Company to or for the benefit of the Employee, whether paid
or payable or distributed or distributable pursuant to the terms of this
Agreement or otherwise (a "Payment"), would constitute an "excess parachute
payment" within the meaning of Section 280G of the Internal Revenue Code of
1986, as amended (the "Code"), and that it would be economically advantageous to
the Company to reduce the Payment to avoid or reduce the taxation of excels
parachute payments under Section 4999 of the Code, the aggregate present value
of amounts payable or distributable to or for the benefit of the Employee
pursuant to this Agreement (such payments or distributions pursuant to this
Agreement are hereinafter referred to as "Agreement Payments") shall be reduced
(but not below zero) to the Reduced Amount. The "Reduced Amount" shall be an
amount expressed in present value which maximizes the aggregate present value of
Agreement Payments without causing any Payment to be subject to the taxation
under Section 4999 of the Code. For purposes of this Section 10, present value
shall be determined in accordance with Section 280G(d) (4) of the Code.

          (b)  All determinations to be made under this Section 10 shall be made
by KPMG Peat Marwick, or the Company's independent public accountant immediately
prior to the Change of Control if other than KPMG Peat Marwick (the "Accounting
Firm"), which firm shall use its best efforts to provide its determinations and
any supporting calculations both to the Company and the Employee within 10 days
of the Termination Date. Any such determination by the Accounting Firm shall be
binding upon the Company and the Employee. The Company shall in its sole
discretion determine which and how much of the Agreement Payments shall be
eliminated or reduced consistent with the requirements of this Section 10.
Within five days after the Company's determination, the Company shall pay (or
cause to be paid) or distribute (or cause to be distributed) to or for the
benefit of the Employee such amounts as are then due to the Employee under this
Agreement.


     (c)  As a result of the uncertainty in the application of Section 280G of
the Code at the time of the initial determination by the Accounting Firm
hereunder, it is possible that Agreement Payments, as the case may be, will have
been made by the Company which should not have been made ("Overpayment") or that
additional Agreement Payments which have not been made by the Company could have
been made ("Underpayment"), in each case, consistent with the


                                       10

<PAGE>



calculations required to be made hereunder. Within two years after the
Termination of Employment, the Accounting Firm shall-review the determination
made by it pursuant to the preceding paragraph. In the event that the Accounting
Firm determines that an overpayment has been made, any such overpayment shall be
treated for all purposes as a loan to the Employee which the Employee shall
repay to the Company together with interest at the applicable Federal rate
provided for in Section 7872(f)(2) of the Code (the "Federal Rate"); PROVIDED,
HOWEVER, that no amount shall be payable by the Employee to the Company if and
to the extent such payment would not reduce the amount which is subject to
taxation under Section 4999 of the Code. In the event that the Accounting Firm
determines that an Underpayment has occurred, any such Underpayment shall be
promptly paid by the Company to or for the benefit of the Employee together with
interest at the Federal Rate.

          (d)  All of the fees and expenses of the Accounting Firm in performing
the determinations referred to in subsections (b) and (c) above shall be borne
solely by the Company. The Company agrees to indemnify and hold harmless the
Accounting Firm of and from any and all claims, damages and expenses of any
nature resulting from or relating to its determinations pursuant to subsections
(b) and (c) above, except for claims, damages or expenses resulting from the
gross negligence or willful misconduct of the Accounting Firm.

          11.  SETTLEMENT OF ALL DISPUTES.

          (a)  Any dispute, controversy or claim arising out of or relating to
any provision of this Agreement or the Employee's Termination upon a Change of
Control shall be settled by arbitration in the City of Houston, Texas, in
accordance with the commercial arbitration rules then in effect of the American
Arbitration Association, before a panel of three arbitrators, two of whom shall
be selected by the Company and the Employee, respectively, and the third of whom
shall be selected by the other two arbitrators. Each arbitrator selected as
provided herein is required to be or have been a director or an executive
officer of a corporation whose shares of common stock were listed during at
least one year of such service on the New York Stock Exchange or the American
Stock Exchange or quoted on the National Association of Securities Dealers
Automated Quotations System. Any award entered by the arbitrators shall be
final, binding and nonappealable and judgment may be entered thereon by any
party in accordance with applicable law in any court of competent jurisdiction.
This arbitration provision shall be specifically enforceable. The fees of the
American Arbitration Association and the arbitrators and any expenses


                                       11

<PAGE>



relating to the conduct of the arbitration shall be paid by the Company.

          (b)  The party or parties challenging the right of the Employee to the
benefits of this Agreement shall in all circumstances have the burden of proof.

          12.  TERM OF AGREEMENT. This Agreement shall commence as of the date
first written above and shall continue in effect until the earlier of (i) the
date upon which the Employee ceases to be in the employ of the Company or any
Subsidiary thereof for any reason other than a Termination upon a Change of
Control, or (ii) 24 months after a Change of Control has occurred, PROVIDED,
HOWEVER, that all of the obligations of the parties hereunder arising after a
Change of Control shall continue in effect until such obligations are satisfied
or have expired.

          13.  SUCCESSOR COMPANY. The Company shall require any successor or
successors (whether direct or indirect, by purchase, merger, consolidation or
otherwise) to all or substantially all of the business and/or assets of the
Company, by agreement in form and substance satisfactory to the Employee, to
acknowledge expressly that this Agreement is binding upon and enforceable
against the Company in accordance with the terms hereof, and to become jointly
and severally obligated with the Company to perform this Agreement in the same
manner and to the same extent that the Company would be required to perform if
no such succession or successions had taken place. Failure of the Company to
obtain such agreement prior to the effectiveness of any such succession shall be
a breach of this Agreement.  As used in this Agreement, the Company shall mean
the Company as hereinbefore defined and any such successor or successors to its
business and/or assets, jointly and severally.

          14.  NOTICE. All notices and other communications required or
permitted hereunder or necessary or convenient in connection herewith shall be
in writing and shall be delivered personally or mailed by registered or
certified mail, return receipt requested, or by overnight express courier
service, as follows:

          If to the Company, to:

               Enterra Corporation
               2707 North Loop West
               Suite 1050
               Houston, TX 77008
               Attention: Chairman of the Board


                                       12

<PAGE>



          With a required copy to:

               Morgan, Lewis & Bockius
               2000 One Logan Square
               Philadelphia, PA 19103-6993
               Attention: David R. King, Esq.

          If to the Employee, to:

               D. Dale Wood
               9015 Tranquil Park
               Spring, TX 77379

          With a required copy to:

               Sheinfeld, Maley & Kay
               3700 First City Tower
               Houston, TX 77002-4618
               Attention: John B. Connolly III

or to such other names or addresses as the Company or the Employee, as the case
may be, shall designate by notice to the other party hereto in the manner
specified in this Section. Any such notice shall be deemed delivered and
effective when received in the case of personal delivery, five days after
deposit, postage prepaid, with the U.S. Postal Service in the case of registered
or certified mail, or on the next business day in the case of overnight express
courier service.

          15.  GOVERNING LAW. THIS AGREEMENT SHALL BE GOVERNED BY AND
INTERPRETED UNDER THE LAWS OF THE STATE OF DELAWARE WITHOUT GIVING EFFECT TO
SUCH STATE'S CONFLICT OF LAWS PROVISIONS.

          16.  CONTENTS OF AGREEMENT, AMENDMENT AND ASSIGNMENT.

          (a)  This Agreement is intended to be in addition to the provisions of
the Employment Agreement; provided, however, that in the event of a Termination
upon a Change of Control, (i) Sections 5 and 6 of the Employment Agreement, (ii)
Sections 5 and 6 of that employment agreement dated as of February 1, 1988 among
the Company, the Employee and Connect Corporation (the "Prior Employment
Agreement"), and (iii) any similar provisions contained in any agreements
entered into by Employee with CRC-Evans Pipeline International, Inc., a Texas
corporation, or its predecessor by merger, shall terminate and be of no further
force and effect.  Subject to the foregoing, this Agreement supersedes all prior
agreements and sets forth the entire understanding between the parties hereto
with respect to the subject matter


                                       13

<PAGE>



hereof and cannot be changed, modified, extended or terminated except upon
written amendment executed by the Employee and approved by the board and
executed on the Company's behalf by a duly authorized officer.  The provisions
of this Agreement may provide for payments to the Employee under certain
compensation or bonus plans (including without limitation the Stock Plan, the
Bonus Plan, the 401(k) Plan and the CRC-Evans Plan) under circumstances where
such plans would not provide for payment thereof. It is the specific intention
of the parties that the provisions of this Agreement shall supersede any
provisions to the contrary in such plans, and such plans shall be deemed to have
been amended to correspond with this Agreement without further action by the
Company or the Board.

          (b)  Nothing in this Agreement shall be construed as giving the
Employee any right to be retained in the employ of the Company or any of its
Subsidiaries.

          (c)  The Employee acknowledges that from time to time, the Company and
its subsidiaries may establish, maintain and distribute employee manuals or
handbooks or personnel policy manuals, and officers or other representatives of
the Company or its Subsidiaries may make written or oral statements relating to
personnel policies and procedures. Such manuals, handbooks and statements are
intended only for general guidance. No policies, procedures or statements of any
nature by or on behalf of the Company or its Subsidiaries (whether written or
oral, and whether or not contained in any employee manual or handbook or
personnel policy manual), and no acts or practices of any nature, shall be
construed to modify this Agreement.

          (d)  All of the terms and provisions of this Agreement shall be
binding upon and inure to the benefit of and be enforceable by the respective
heirs, representatives, successors and assigns of the parties hereto, except
that the duties and responsibilities of the Employee and the Company hereunder
shall not be assignable in whole or in part by the Company.

          17.  SEVERABILITY. If any provision of this Agreement or application
thereof to anyone or under any circumstances shall be determined to be invalid
or unenforceable, such invalidity or unenforceability shall not affect any other
provisions or applications of this Agreement which can be given effect without
the invalid or unenforceable provision or application.

          18.  REMEDIES CUMULATIVE - NO WAIVER. No right conferred upon the
Employee by this Agreement is intended to be exclusive of any other right or
remedy, and each and every such right or remedy shall be cumulative and shall be
in


                                       14


<PAGE>



addition to any other right or remedy given hereunder or now or hereafter
existing at law or in equity.  No delay or omission by the Employee in
exercising any right, remedy or power hereunder or existing at law or in equity
shall be construed as a waiver thereof, including without limitation any delay
by the Employee in delivering a Notice of Termination pursuant to Section 2
hereof after an event has occurred which would, if the Employee had resigned,
have constituted a Termination upon a Change of Control pursuant to Section
1(p)(ii) of this Agreement.

          19.  MISCELLANEOUS.  All section headings are for convenience only.
This Agreement may be executed in several counterparts, each of which is an
original.  It shall not be necessary in making proof of this Agreement or any
counterpart hereof to produce or account for any of the other counterparts.

          IN WITNESS WHEREOF, the undersigned, intending to be legally bound,
have executed this Agreement as of the date first above written.


Attest:                                      ENTERRA CORPORATION



/s/ M. Gay Mather                            By: /s/ Stanley P. Gold
- ------------------------------                  -------------------------------
          Secretary                             Stanley P.  Gold
                                                Chairman of the Board



/s/ Steven W. Krablin                           /s/ D. Dale Wood
- ------------------------------                  -------------------------------
          Witness                               D.  Dale Wood


                                15




<PAGE>

             AMENDMENT 1995-1 TO SEVERANCE AGREEMENT

          This Amendment 1995-1 to Severance Agreement (the
"Amendment"), dated as of AUGUST 31, 1995, is between Enterra
Corporation, a Delaware corporation ("Enterra"), and  M. TIMOTHY
CAREY  (the "Employee").

          WHEREAS, on  FEBRUARY 20, 1992 , Enterra and the
Employee entered into a Severance Agreement, dated as of
FEBRUARY 20, 1992  (the "Agreement");

          WHEREAS, the parties hereto desire to amend certain
provisions of the Agreement regarding the severance compensation
upon termination of employment in connection with a Change of
Control;

          WHEREAS, the parties hereto desire to condition the
effectiveness of this Amendment upon the consummation of the
merger between Enterra and Weatherford International Incorporated
("Weatherford") pursuant to the Agreement and Plan of Merger,
dated as of June 23, 1995, as amended as of August 28, 1995,
between Weatherford and Enterra (the "Merger Agreement"); and

          WHEREAS, capitalized terms used herein that are not
defined herein shall have the meanings ascribed thereto in the
Agreement;

          NOW, THEREFORE, effective as of the Effective Time, as
that term is defined in the Merger Agreement, the parties hereto,
intending to be legally bound, agree as follows:

          1.   Section 1(p)(ii) of the Agreement is hereby
amended by adding thereto a new last paragraph, to read as
follows:

          "Notwithstanding anything to the contrary under this
          Section 1(p)(ii), any resignation by the Employee at
          any time from the Effective Time, as that term is
          defined in the Agreement and Plan of Merger, dated as
          of June 23, 1995, as amended as of August 28, 1995,
          between Weatherford International Incorporated
          ("Weatherford") and the Company (the "Merger
          Agreement"), through August 12, 1996 shall constitute a
          'Termination upon Change of Control' under this
          Agreement."



<PAGE>

          2.   Section 1 of the Agreement is hereby amended by
adding thereto a new sentence at the end thereof, to read as
follows:

          "With respect to all periods from and after
          the Effective Time, as that term is defined
          in the Merger Agreement, any reference in
          this Agreement to the 'Company' or the
          'Common Stock' shall be deemed to be a
          reference to Weatherford or the common stock,
          par value $.10 per share, of Weatherford."

          3.   Section 4 of the Agreement is hereby amended by
deleting therefrom the introductory provision and subsection (a)
thereof and substituting the following therefor:

          "4.  OTHER PAYMENTS.  In the event of the Employee's
          Termination upon a Change of Control, the Company
          shall:

               (a)  deliver to the Employee within fifteen days
          after the Termination Date, unless the Employee has
          exercised such options and rights, such number of
          shares of the Company's Common Stock the total fair
          market value of which will be equal to the excess, if
          any, of the aggregate fair market value of the shares
          of the Company's Common Stock subject to all stock
          options and stock appreciation rights outstanding and
          unexercised immediately prior to the Termination Date,
          whether vested or unvested, granted to the Employee
          under the Stock Plan, over the aggregate exercise price
          of all such stock options.  For purposes of this
          paragraph, fair market value shall mean the highest of
          (x) the closing price of the Company's Common Stock on
          the business day immediately preceding the Termination
          Date, if such Common Stock is publicly traded at such
          date, (y) if such Common Stock is not publicly traded
          at the Termination Date, the value determined by an
          independent appraiser, such appraiser to be selected by
          the Employee and to be reasonably satisfactory to the
          Company (the fees and expenses of such appraiser to be
          borne by the Company), or (z) the highest per share
          price of the Company's Common Stock paid (in connection
          with the Change of Control or at any time thereafter)
          by the Person or group whose acquisition of shares of
          Common Stock of the Company has given rise to a Change
          of Control.  The Company shall take all corporate
          action necessary (i) to reserve for issuance a
          sufficient number of shares of the Common Stock for
          delivery pursuant to this section and (ii) to ensure
          that all shares of the Common Stock issued pursuant to
          this section are registered under the Securities Act of
          1933, as amended, listed on the New York Stock Exchange
          and may be freely transferred by the holders thereof;"

          4.   Section 10 of the Agreement is deleted and the
following is


                                     -2-

<PAGE>

substituted therefor:

          "10. CERTAIN ADDITIONAL PAYMENTS BY THE COMPANY.

               (a)  Anything in this Agreement to the contrary
          notwithstanding and except as set forth below, in the
          event it shall be determined that any payment or
          distribution by the Company (whether by Enterra
          Corporation or Weatherford or by any affiliate of, or
          plan maintained by, either) to or for the benefit of
          the Employee (whether paid or payable or distributed or
          distributable pursuant to the terms of this Agreement,
          the Merger Agreement or otherwise, but determined
          without regard to any additional payments required
          under this Section 10) (a "Payment") would be subject
          to the excise tax imposed by Section 4999 of the Code
          or any interest or penalties are incurred by the
          Employee with respect to such excise tax (such excise
          tax, together with any such interest and penalties, are
          hereinafter collectively referred to as the "Excise
          Tax"), then the Employee shall be entitled to receive
          an additional payment (a "Gross-Up Payment") in an
          amount such that after payment by the Employee of all
          taxes (including any interest or penalties imposed with
          respect to such taxes), including without limitation,
          any income taxes (and any interest and penalties
          imposed with respect thereto) and Excise Tax imposed
          upon the Gross-Up Payment, the Employee retains an
          amount of the Gross-Up Payment equal to the Excise Tax
          imposed upon the Payments.

               (b)  Subject to the provisions of Section 10(c),
          all determinations required to be made under this
          Section 10, including whether and when a  Gross-Up
          Payment is required and the amount of such Gross-Up
          Payment and the assumptions to be utilized in arriving
          at such determination shall be made by Arthur Andersen
          LLP or, as provided below, such other certified public
          accounting firm as may be designated by the Employee
          (the "Accounting Firm") which shall provide detailed
          supporting calculations both to the Company and the
          Employee within 15 business days after the receipt of
          notice from the Employee that there has been a Payment,
          or such earlier time as is requested by the Company.
          In the event that the Accounting Firm is serving as
          accountant or auditor for the individual, entity or
          group effecting the Change of Control, the Employee
          shall appoint another nationally recognized accounting
          firm to make the determinations required hereunder
          (which accounting firm shall then be referred to as the
          Accounting Firm hereunder).  All fees and expenses of
          the Accounting Firm shall be borne solely by the
          Company.  Any Gross-Up Payment, as determined pursuant
          to this Section 10, shall be paid by the Company to the
          Employee within five days after the receipt of the
          Accounting Firm's determination.  Any determination by
          the Accounting Firm shall be binding upon the Company
          and the Employee.  As a result of the uncertainty in
          the application of Section 4999 of the Code at the time
          of the initial determination by the Accounting Firm


                                     -3-

<PAGE>

          hereunder, it is possible that Gross-Up Payments which
          will not have been made by the Company should have been
          made ("Underpayment"), consistent with the calculations
          required to be made hereunder.  In the event that the
          Company exhausts its remedies pursuant to Section 10(c)
          and the Employee thereafter is required to make a
          payment of any Excise Tax, the Accounting Firm shall
          determine the amount of the Underpayment that has
          occurred and any such Underpayment shall be promptly
          paid by the Company to or for the benefit of the
          Employee.

               (c)  The Employee shall notify the Company in
          writing of any claim by the Internal Revenue Service
          that, if successful, would require the payment by the
          Company of the Gross-Up Payment.  Such notification
          shall be given as soon as practicable, but no later
          than ten business days after the Employee is informed
          in writing of such claim, and shall apprise the Company
          of the nature of such claim and the date on which such
          claim is requested to be paid.  The Employee shall not
          pay such claim prior to the expiration of the 30-day
          period following the date on which he gives such notice
          to the Company (or such shorter period ending on the
          date that any payment of taxes with respect to such
          claim is due).  If the Company notifies the Employee in
          writing prior to the expiration of such period that it
          desires to contest such claim the Employee shall:

               (i)  give the Company any information reasonably
          requested by the Company relating to such claim,

               (ii)  take such action in connection with
          contesting such claim as the Company shall reasonably
          request in writing from time to time, including without
          limitation, accepting legal representation with respect
          to such claim by an attorney reasonably selected by the
          Company,

               (iii)  cooperate with the Company in good faith in
          order effectively to contest such claim, and

               (iv)  permit the Company to participate in any
          proceedings relating to such claims; provided, however,
          that the Company shall bear and pay directly all costs
          and expenses (including additional interest and
          penalties) incurred in connection with such costs and
          shall indemnify and hold the Employee harmless, on an
          after-tax basis, for any Excise Tax or income tax
          (including interest and penalties with respect thereto)
          imposed as a result of such representation and payment
          of costs and expenses.  Without limitation on the
          foregoing provisions of this Section 10(c), the Company
          shall control all proceedings taken in connection with
          such contest and, at its sole option, may pursue or
          forego any and all administrative appeals, proceedings,
          hearings and conferences with the taxing authority in
          respect of such claim and may, at its sole option,
          either direct the Employee to pay the tax claimed and
          sue for a refund or contest the claim


                                     -4-

<PAGE>

          in any permissible manner, and the Employee agrees to
          prosecute such contest to determination before any
          administrative tribunal, in a court of initial
          jurisdiction and in one or more appellate courts, as
          the Company shall determine; provided, however, that if
          the Company directs the Employee to pay such claim and
          sue for a refund, the Company shall advance the amount
          of such payment to the Employee, on an interest-free
          basis and shall indemnify and hold the Employee
          harmless, on an after-tax basis, from any Excise Tax or
          income tax (including interest or penalties with
          respect thereto) imposed with respect to such advance
          or with respect to any imputed income with respect to
          such advance; and further provided that any extension
          of the statute of limitations relating to payment of
          taxes for the taxable year of the Employee with respect
          to which such contested amount is claimed to be due is
          limited solely to such contested amount.  Furthermore,
          the Company's control of the contest shall be limited
          to issues with respect to which a Gross-Up Payment
          would be payable hereunder and the Employee shall be
          entitled to settle or contest, as the case may be, any
          other issues raised by the Internal Revenue Service or
          any other taxing authority.

               (d)  If, after the receipt by the Employee of an
          amount advanced by the Company pursuant to Section
          10(c), the Employee becomes entitled to receive any
          refund with respect to such claim, the Employee shall
          (subject to the Company's complying with the
          requirements of Section 10(c)) promptly pay to the
          Company the amount of such refund (together with any
          interest paid or credited thereon after taxes
          applicable thereto).  If, after the receipt by the
          Employee of an amount advanced by the Company pursuant
          to Section 10(c), a determination is made that the
          Employee shall not be entitled to any refund with
          respect to such claim and the Company does not notify
          the Employee in writing of its intent to contest such
          denial of refund prior to the expiration of 30 days
          after such determination, then such advance shall be
          forgiven and shall not be required to be repaid and the
          amount of such advance shall offset, to the extent
          thereof, the amount of Gross-Up Payment required to be
          paid.

          5.   The remainder of the Agreement shall remain in
full force and effect as written.

          6.   This Amendment shall be conditioned upon the
consummation of the merger between Enterra and Weatherford
pursuant to the Merger Agreement, and in the event such merger is
not so consummated, the Agreement shall remain in full force and
effect without regard to the changes contemplated by this
Amendment.

          IN WITNESS WHEREOF, the parties hereto have executed
this Amendment as of the day and year first above written.


                                     -5-

<PAGE>

                              ENTERRA CORPORATION


                              By:  /s/ Steven W. Krablin
                                   --------------------------
                                     Steven W. Krablin
                                     Vice President and Chief
                                     Financial Officer


                              /s/ M. Timothy Carey
                              -------------------------------
                              M. Timothy Carey


<PAGE>

             AMENDMENT 1995-1 TO SEVERANCE AGREEMENT


          This Amendment 1995-1 to Severance Agreement (the
"Amendment"), dated as of  AUGUST 31, 1995, is between Enterra
Corporation, a Delaware corporation ("Enterra"), and  C. PAUL
EVANS  (the "Employee").


          WHEREAS, on  February 20, 1992, Enterra and the
Employee entered into a Severance Agreement, dated as of
February 20, 1992  (the "Agreement");


          WHEREAS, the parties hereto desire to amend certain
provisions of the Agreement regarding the severance compensation
upon termination of employment in connection with a Change of
Control;


          WHEREAS, the parties hereto desire to condition the
effectiveness of this Amendment upon the consummation of the
merger between Enterra and Weatherford International Incorporated
("Weatherford") pursuant to the Agreement and Plan of Merger,
dated as of June 23, 1995, as amended as of August 28, 1995,
between Weatherford and Enterra (the "Merger Agreement"); and


          WHEREAS, capitalized terms used herein that are not
defined herein shall have the meanings ascribed thereto in the
Agreement;


          NOW, THEREFORE, effective as of the Effective Time, as
that term is defined in the Merger Agreement, the parties hereto,
intending to be legally bound, agree as follows:


          1.   Section 1 of the Agreement is hereby amended by
adding thereto a new sentence at the end thereof, to read as
follows:

          "With respect to all periods from and after
          the Effective Time, as that term is defined
          in the Agreement and Plan of Merger, dated as
          of June 23, 1995, as amended as of August 28,
          1995, between Weatherford International
          Incorporated ("Weatherford") and the Company,
          any reference in this Agreement to the
          'Company' or the 'Common Stock' shall be
          deemed to be a reference to Weatherford or
          the common


<PAGE>

          stock, par value $.10 per share, of Weatherford."

          2.   Section 4 of the Agreement is hereby amended by
deleting therefrom the introductory provision and subsection (a)
thereof and substituting the following therefor:

          "4.  OTHER PAYMENTS.  In the event of the Employee's
          Termination upon a Change of Control, the Company
          shall:

               (a)  deliver to the Employee within fifteen days
          after the Termination Date, unless the Employee has
          exercised such options and rights, such number of
          shares of the Company's Common Stock the total fair
          market value of which will be equal to the excess, if
          any, of the aggregate fair market value of the shares
          of the Company's Common Stock subject to all stock
          options and stock appreciation rights outstanding and
          unexercised immediately prior to the Termination Date,
          whether vested or unvested, granted to the Employee
          under the Stock Plan, over the aggregate exercise price
          of all such stock options.  For purposes of this
          paragraph, fair market value shall mean the highest of
          (x) the closing price of the Company's Common Stock on
          the business day immediately preceding the Termination
          Date, if such Common Stock is publicly traded at such
          date, (y) if such Common Stock is not publicly traded
          at the Termination Date, the value determined by an
          independent appraiser, such appraiser to be selected by
          the Employee and to be reasonably satisfactory to the
          Company (the fees and expenses of such appraiser to be
          borne by the Company), or (z) the highest per share
          price of the Company's Common Stock paid (in connection
          with the Change of Control or at any time thereafter)
          by the Person or group whose acquisition of shares of
          Common Stock of the Company has given rise to a Change
          of Control.  The Company shall take all corporate
          action necessary (i) to reserve for issuance a
          sufficient number of shares of the Common Stock for
          delivery pursuant to this section and (ii) to ensure
          that all shares of the Common Stock issued pursuant to
          this section are registered under the Securities Act of
          1933, as amended, listed on the New York Stock Exchange
          and may be freely transferred by the holders thereof;"

          3.   Section 10 of the Agreement is deleted and the
following is substituted therefor:

          "10. CERTAIN ADDITIONAL PAYMENTS BY THE COMPANY.

               (a)  Anything in this Agreement to the contrary
          notwithstanding and except as set forth below, in the
          event it shall be determined that any payment or
          distribution by the Company (whether by Enterra
          Corporation or Weatherford or by any affiliate of, or
          plan maintained by, either) to or


                                     -2-


<PAGE>

          for the benefit of the Employee (whether paid or payable
          or distributed or distributable pursuant to the terms
          of this Agreement, the Merger Agreement or otherwise,
          but determined without regard to any additional payments
          required under this Section 10) (a "Payment") would be
          subject to the excise tax imposed by Section 4999 of the
          Code or any interest or penalties are incurred by the
          Employee with respect to such excise tax (such excise
          tax, together with any such interest and penalties, are
          hereinafter collectively referred to as the "Excise
          Tax"), then the Employee shall be entitled to receive
          an additional payment (a "Gross-Up Payment") in an
          amount such that after payment by the Employee of all
          taxes (including any interest or penalties imposed with
          respect to such taxes), including without limitation,
          any income taxes (and any interest and penalties
          imposed with respect thereto) and Excise Tax imposed
          upon the Gross-Up Payment, the Employee retains an
          amount of the Gross-Up Payment equal to the Excise Tax
          imposed upon the Payments.

               (b)  Subject to the provisions of Section 10(c),
          all determinations required to be made under this
          Section 10, including whether and when a  Gross-Up
          Payment is required and the amount of such Gross-Up
          Payment and the assumptions to be utilized in arriving
          at such determination shall be made by Arthur Andersen
          LLP or, as provided below, such other certified public
          accounting firm as may be designated by the Employee
          (the "Accounting Firm") which shall provide detailed
          supporting calculations both to the Company and the
          Employee within 15 business days after the receipt of
          notice from the Employee that there has been a Payment,
          or such earlier time as is requested by the Company.
          In the event that the Accounting Firm is serving as
          accountant or auditor for the individual, entity or
          group effecting the Change of Control, the Employee
          shall appoint another nationally recognized accounting
          firm to make the determinations required hereunder
          (which accounting firm shall then be referred to as the
          Accounting Firm hereunder).  All fees and expenses of
          the Accounting Firm shall be borne solely by the
          Company.  Any Gross-Up Payment, as determined pursuant
          to this Section 10, shall be paid by the Company to the
          Employee within five days after the receipt of the
          Accounting Firm's determination.  Any determination by
          the Accounting Firm shall be binding upon the Company
          and the Employee.  As a result of the uncertainty in
          the application of Section 4999 of the Code at the time
          of the initial determination by the Accounting Firm
          hereunder, it is possible that Gross-Up Payments which
          will not have been made by the Company should have been
          made ("Underpayment"), consistent with the calculations
          required to be made hereunder.  In the event that the
          Company exhausts its remedies pursuant to Section 10(c)
          and the Employee thereafter is required to make a
          payment of any Excise Tax, the Accounting Firm shall
          determine the amount of the Underpayment that has
          occurred and any such Underpayment shall be promptly
          paid by the Company to or for the benefit of the
          Employee.


                                     -3-

<PAGE>

               (c)  The Employee shall notify the Company in
          writing of any claim by the Internal Revenue Service
          that, if successful, would require the payment by the
          Company of the Gross-Up Payment.  Such notification
          shall be given as soon as practicable, but no later
          than ten business days after the Employee is informed
          in writing of such claim, and shall apprise the Company
          of the nature of such claim and the date on which such
          claim is requested to be paid.  The Employee shall not
          pay such claim prior to the expiration of the 30-day
          period following the date on which he gives such notice
          to the Company (or such shorter period ending on the
          date that any payment of taxes with respect to such
          claim is due).  If the Company notifies the Employee in
          writing prior to the expiration of such period that it
          desires to contest such claim the Employee shall:

               (i)  give the Company any information reasonably
          requested by the Company relating to such claim,

               (ii)  take such action in connection with
          contesting such claim as the Company shall reasonably
          request in writing from time to time, including without
          limitation, accepting legal representation with respect
          to such claim by an attorney reasonably selected by the
          Company,

               (iii)  cooperate with the Company in good faith in
          order effectively to contest such claim, and

               (iv)  permit the Company to participate in any
          proceedings relating to such claims; provided, however,
          that the Company shall bear and pay directly all costs
          and expenses (including additional interest and
          penalties) incurred in connection with such costs and
          shall indemnify and hold the Employee harmless, on an
          after-tax basis, for any Excise Tax or income tax
          (including interest and penalties with respect thereto)
          imposed as a result of such representation and payment
          of costs and expenses.  Without limitation on the
          foregoing provisions of this Section 10(c), the Company
          shall control all proceedings taken in connection with
          such contest and, at its sole option, may pursue or
          forego any and all administrative appeals, proceedings,
          hearings and conferences with the taxing authority in
          respect of such claim and may, at its sole option,
          either direct the Employee to pay the tax claimed and
          sue for a refund or contest the claim in any
          permissible manner, and the Employee agrees to
          prosecute such contest to determination before any
          administrative tribunal, in a court of initial
          jurisdiction and in one or more appellate courts, as
          the Company shall determine; provided, however, that if
          the Company directs the Employee to pay such claim and
          sue for a refund, the Company shall advance the amount
          of such payment to the Employee, on an interest-free
          basis and shall indemnify and hold the Employee
          harmless, on an after-tax basis, from any Excise Tax or
          income tax (including interest or penalties with
          respect thereto) imposed with respect to such advance or


                                     -4-

<PAGE>

          with respect to any imputed income with respect to
          such advance; and further provided that any extension
          of the statute of limitations relating to payment of
          taxes for the taxable year of the Employee with respect
          to which such contested amount is claimed to be due is
          limited solely to such contested amount.  Furthermore,
          the Company's control of the contest shall be limited
          to issues with respect to which a Gross-Up Payment
          would be payable hereunder and the Employee shall be
          entitled to settle or contest, as the case may be, any
          other issues raised by the Internal Revenue Service or
          any other taxing authority.

               (d)  If, after the receipt by the Employee of an
          amount advanced by the Company pursuant to Section
          10(c), the Employee becomes entitled to receive any
          refund with respect to such claim, the Employee shall
          (subject to the Company's complying with the
          requirements of Section 10(c)) promptly pay to the
          Company the amount of such refund (together with any
          interest paid or credited thereon after taxes
          applicable thereto).  If, after the receipt by the
          Employee of an amount advanced by the Company pursuant
          to Section 10(c), a determination is made that the
          Employee shall not be entitled to any refund with
          respect to such claim and the Company does not notify
          the Employee in writing of its intent to contest such
          denial of refund prior to the expiration of 30 days
          after such determination, then such advance shall be
          forgiven and shall not be required to be repaid and the
          amount of such advance shall offset, to the extent
          thereof, the amount of Gross-Up Payment required to be
          paid.

          4.   The remainder of the Agreement shall remain in
full force and effect as written.

          5.   This Amendment shall be conditioned upon the
consummation of the merger between Enterra and Weatherford
pursuant to the Merger Agreement, and in the event such merger is
not so consummated, the Agreement shall remain in full force and
effect without regard to the changes contemplated by this
Amendment.

          IN WITNESS WHEREOF, the parties hereto have executed
this Amendment as of the day and year first above written.

                            ENTERRA CORPORATION


                            By:  /s/ Steven W. Krablin
                                 ---------------------------
                                   Steven W. Krablin
                                   Vice President and Chief Financial Officer


                            /s/ C. Paul Evans
                            --------------------------------
                            C. Paul Evans


                                     -5-



<PAGE>

             AMENDMENT 1995-1 TO SEVERANCE AGREEMENT


          This Amendment 1995-1 to Severance Agreement (the "Amendment"),
dated as of AUGUST 31, 1995, is between Pipeline Induction Heat Limited
("PIH") and BRIAN CHARLES GOFF (the "Employee").

          WHEREAS, Enterra Corporation, a Delaware Corporation ("Enterra"),
is the ultimate parent company of PIH;

          WHEREAS, on  April 1, 1993, PIH and the Employee entered into a
Severance Agreement, dated as of  April 1, 1993 (the "Agreement");

          WHEREAS, the parties hereto desire to amend certain provisions of
the Agreement regarding the severance compensation upon termination of
employment in connection with a Change of Control;

          WHEREAS, the parties hereto desire to condition the effectiveness
of this Amendment upon the consummation of the merger between Enterra and
Weatherford International Incorporated ("Weatherford") pursuant to the
Agreement and Plan of Merger, dated as of June 23, 1995, as amended as of
August 28, 1995, between Weatherford and Enterra (the "Merger Agreement"); and

          WHEREAS, capitalized terms used herein that are not defined herein
shall have the meanings ascribed thereto in the Agreement;

          NOW, THEREFORE, effective as of the Effective Time, as that term is
defined in the Merger Agreement, the parties hereto, intending to be legally
bound, agree as follows:

          1.   Section 1 of the Agreement is hereby amended by adding thereto
a new sentence at the end thereof, to read as follows:

          "With respect to all periods from and after the Effective Time,
          as that term is defined in the Agreement and Plan of Merger,
          dated as of June 23, 1995, as amended as of August 28, 1995,
          between Weatherford International Incorporated


<PAGE>

          ("Weatherford") and Enterra, any reference in this Agreement
          to 'Enterra' or the 'Common Stock' shall be deemed to be a
          reference to Weatherford or the common stock, par value $.10
          per share, of Weatherford."

          2.   Section 4 of the Agreement is hereby amended by deleting
therefrom the introductory provision and subsection (a) thereof and
substituting the following therefor:

          "4.  OTHER PAYMENTS.  In the event of the Employee's
          Termination upon a Change of Control, the Company
          shall:

               (a)  deliver to the Employee within fifteen days
          after the Termination Date, unless the Employee has
          exercised such options and rights, such number of
          shares of Enterra's Common Stock the total fair market
          value of which will be equal to the excess, if any, of
          the aggregate fair market value of the shares of
          Enterra's Common Stock subject to all stock options and
          stock appreciation rights outstanding and unexercised
          immediately prior to the Termination Date, whether
          vested or unvested, granted to the Employee under the
          Stock Plan, over the aggregate exercise price of all
          such stock options.  For purposes of this paragraph,
          fair market value shall mean the highest of (x) the
          closing price of Enterra's Common Stock on the business
          day immediately preceding the Termination Date, if such
          Common Stock is publicly traded at such date, (y) if
          such Common Stock is not publicly traded at the
          Termination Date, the value determined by an
          independent appraiser, such appraiser to be selected by
          the Employee and to be reasonably satisfactory to the
          Company (the fees and expenses of such appraiser to be
          borne by the Company), or (z) the highest per share
          price of Enterra's Common Stock paid (in connection
          with the Change of Control or at any time thereafter)
          by the Person or group whose acquisition of shares of
          Common Stock of Enterra has given rise to a Change of
          Control.  Enterra shall take all corporate action
          necessary (i) to reserve for issuance a sufficient
          number of shares of the Common Stock for delivery
          pursuant to this section and (ii) to ensure that all
          shares of the Common Stock issued pursuant to this
          section are registered under the Securities Act of
          1933, as amended, listed on the New York Stock Exchange
          and may be freely transferred by the holders thereof;"

          3.   The remainder of the Agreement shall remain in full force and
effect as written.

          4.   This Amendment shall be conditioned upon the consummation of
the merger between Enterra and Weatherford pursuant to the Merger Agreement,
and in the event such merger is not so consummated, the Agreement shall
remain in full force and effect without regard to the changes contemplated by
this Amendment.


                                    -2-

<PAGE>

          IN WITNESS WHEREOF, the parties hereto have executed this Amendment
as of the day and year first above written.

                                ENTERRA CORPORATION


                                By: /s/ Steven W. Krablin
                                    --------------------------
                                    Steven W. Krablin
                                    Vice President and Chief Financial Officer



                                PIPELINE INDUCTION HEAT LIMITED



                                By: /s/ C. Paul Evans
                                    ---------------------------
                                    C. Paul Evans
                                    Director


                                    /s/ Brian Charles Goff
                                    ---------------------------
                                    Brian Charles Goff


                                    -3-
<PAGE>

             AMENDMENT 1995-1 TO SEVERANCE AGREEMENT


          This Amendment 1995-1 to Severance Agreement (the
"Amendment"), dated as of AUGUST 31, 1995, is between Enterra
Corporation, a Delaware corporation ("Enterra"), and  STEVEN C.
GRANT  (the "Employee").


          WHEREAS, on FEBRUARY 8, 1990, Enterra and the
Employee entered into a Severance Agreement, dated as of
FEBRUARY 8, 1990  (the "Agreement");


          WHEREAS, the parties hereto desire to amend certain
provisions of the Agreement regarding the severance compensation
upon termination of employment in connection with a Change of
Control;


          WHEREAS, the parties hereto desire to condition the
effectiveness of this Amendment upon the consummation of the
merger between Enterra and Weatherford International Incorporated
("Weatherford") pursuant to the Agreement and Plan of Merger,
dated as of June 23, 1995, as amended as of August 28, 1995,
between Weatherford and Enterra (the "Merger Agreement"); and


          WHEREAS, capitalized terms used herein that are not
defined herein shall have the meanings ascribed thereto in the
Agreement;


          NOW, THEREFORE, effective as of the Effective Time, as
that term is defined in the Merger Agreement, the parties hereto,
intending to be legally bound, agree as follows:


          1.   Section 1(p)(ii) of the Agreement is hereby
amended by adding thereto a new last paragraph, to read as
follows:

          "Notwithstanding anything to the contrary under this
          Section 1(p)(ii), any resignation by the Employee at
          any time from the Effective Time, as that term is
          defined in the Agreement and Plan of Merger, dated as
          of June 23, 1995, as amended as of August 28, 1995,
          between Weatherford International Incorporated
          ("Weatherford") and the Company (the "Merger
          Agreement"), through August 12, 1996 shall constitute a
          'Termination upon Change of Control' under this
          Agreement."

<PAGE>

          2.   Section 1 of the Agreement is hereby amended by
adding thereto a new sentence at the end thereof, to read as
follows:

          "With respect to all periods from and after
          the Effective Time, as that term is defined
          in the Merger Agreement, any reference in
          this Agreement to the 'Company' or the
          'Common Stock' shall be deemed to be a
          reference to Weatherford or the common stock,
          par value $.10 per share, of Weatherford."

          3.   Section 4 of the Agreement is hereby amended by
deleting therefrom the introductory provision and subsection (a)
thereof and substituting the following therefor:

          "4.  OTHER PAYMENTS.  In the event of the Employee's
          Termination upon a Change of Control, the Company
          shall:

               (a)  deliver to the Employee within fifteen days
          after the Termination Date, unless the Employee has
          exercised such options and rights, such number of
          shares of the Company's Common Stock the total fair
          market value of which will be equal to the excess, if
          any, of the aggregate fair market value of the shares
          of the Company's Common Stock subject to all stock
          options and stock appreciation rights outstanding and
          unexercised immediately prior to the Termination Date,
          whether vested or unvested, granted to the Employee
          under the Stock Plan, over the aggregate exercise price
          of all such stock options.  For purposes of this
          paragraph, fair market value shall mean the highest of
          (x) the closing price of the Company's Common Stock on
          the business day immediately preceding the Termination
          Date, if such Common Stock is publicly traded at such
          date, (y) if such Common Stock is not publicly traded
          at the Termination Date, the value determined by an
          independent appraiser, such appraiser to be selected by
          the Employee and to be reasonably satisfactory to the
          Company (the fees and expenses of such appraiser to be
          borne by the Company), or (z) the highest per share
          price of the Company's Common Stock paid (in connection
          with the Change of Control or at any time thereafter)
          by the Person or group whose acquisition of shares of
          Common Stock of the Company has given rise to a Change
          of Control.  The Company shall take all corporate
          action necessary (i) to reserve for issuance a
          sufficient number of shares of the Common Stock for
          delivery pursuant to this section and (ii) to ensure
          that all shares of the Common Stock issued pursuant to
          this section are registered under the Securities Act of
          1933, as amended, listed on the New York Stock Exchange
          and may be freely transferred by the holders thereof;"

          4.   Section 10 of the Agreement is deleted and the
following is


                                     -2-

<PAGE>

substituted therefor:

          "10. CERTAIN ADDITIONAL PAYMENTS BY THE COMPANY.

               (a)  Anything in this Agreement to the contrary
          notwithstanding and except as set forth below, in the
          event it shall be determined that any payment or
          distribution by the Company (whether by Enterra
          Corporation or Weatherford or by any affiliate of, or
          plan maintained by, either) to or for the benefit of
          the Employee (whether paid or payable or distributed or
          distributable pursuant to the terms of this Agreement,
          the Merger Agreement or otherwise, but determined
          without regard to any additional payments required
          under this Section 10) (a "Payment") would be subject
          to the excise tax imposed by Section 4999 of the Code
          or any interest or penalties are incurred by the
          Employee with respect to such excise tax (such excise
          tax, together with any such interest and penalties, are
          hereinafter collectively referred to as the "Excise
          Tax"), then the Employee shall be entitled to receive
          an additional payment (a "Gross-Up Payment") in an
          amount such that after payment by the Employee of all
          taxes (including any interest or penalties imposed with
          respect to such taxes), including without limitation,
          any income taxes (and any interest and penalties
          imposed with respect thereto) and Excise Tax imposed
          upon the Gross-Up Payment, the Employee retains an
          amount of the Gross-Up Payment equal to the Excise Tax
          imposed upon the Payments.

               (b)  Subject to the provisions of Section 10(c),
          all determinations required to be made under this
          Section 10, including whether and when a  Gross-Up
          Payment is required and the amount of such Gross-Up
          Payment and the assumptions to be utilized in arriving
          at such determination shall be made by Arthur Andersen
          LLP or, as provided below, such other certified public
          accounting firm as may be designated by the Employee
          (the "Accounting Firm") which shall provide detailed
          supporting calculations both to the Company and the
          Employee within 15 business days after the receipt of
          notice from the Employee that there has been a Payment,
          or such earlier time as is requested by the Company.
          In the event that the Accounting Firm is serving as
          accountant or auditor for the individual, entity or
          group effecting the Change of Control, the Employee
          shall appoint another nationally recognized accounting
          firm to make the determinations required hereunder
          (which accounting firm shall then be referred to as the
          Accounting Firm hereunder).  All fees and expenses of
          the Accounting Firm shall be borne solely by the
          Company.  Any Gross-Up Payment, as determined pursuant
          to this Section 10, shall be paid by the Company to the
          Employee within five days after the receipt of the
          Accounting Firm's determination.  Any determination by
          the Accounting Firm shall be binding upon the Company
          and the Employee.  As a result of the uncertainty in
          the application of Section 4999 of the Code at the time
          of the initial determination by the Accounting Firm


                                     -3-

<PAGE>

          hereunder, it is possible that Gross-Up Payments which
          will not have been made by the Company should have been
          made ("Underpayment"), consistent with the calculations
          required to be made hereunder.  In the event that the
          Company exhausts its remedies pursuant to Section 10(c)
          and the Employee thereafter is required to make a
          payment of any Excise Tax, the Accounting Firm shall
          determine the amount of the Underpayment that has
          occurred and any such Underpayment shall be promptly
          paid by the Company to or for the benefit of the
          Employee.

               (c)  The Employee shall notify the Company in
          writing of any claim by the Internal Revenue Service
          that, if successful, would require the payment by the
          Company of the Gross-Up Payment.  Such notification
          shall be given as soon as practicable, but no later
          than ten business days after the Employee is informed
          in writing of such claim, and shall apprise the Company
          of the nature of such claim and the date on which such
          claim is requested to be paid.  The Employee shall not
          pay such claim prior to the expiration of the 30-day
          period following the date on which he gives such notice
          to the Company (or such shorter period ending on the
          date that any payment of taxes with respect to such
          claim is due).  If the Company notifies the Employee in
          writing prior to the expiration of such period that it
          desires to contest such claim the Employee shall:

               (i)  give the Company any information reasonably
          requested by the Company relating to such claim,

               (ii)  take such action in connection with
          contesting such claim as the Company shall reasonably
          request in writing from time to time, including without
          limitation, accepting legal representation with respect
          to such claim by an attorney reasonably selected by the
          Company,

               (iii)  cooperate with the Company in good faith in
          order effectively to contest such claim, and

               (iv)  permit the Company to participate in any
          proceedings relating to such claims; provided, however,
          that the Company shall bear and pay directly all costs
          and expenses (including additional interest and
          penalties) incurred in connection with such costs and
          shall indemnify and hold the Employee harmless, on an
          after-tax basis, for any Excise Tax or income tax
          (including interest and penalties with respect thereto)
          imposed as a result of such representation and payment
          of costs and expenses.  Without limitation on the
          foregoing provisions of this Section 10(c), the Company
          shall control all proceedings taken in connection with
          such contest and, at its sole option, may pursue or
          forego any and all administrative appeals, proceedings,
          hearings and conferences with the taxing authority in
          respect of such claim and may, at its sole option,
          either direct the Employee to pay the tax claimed and
          sue for a refund or contest the claim


                                     -4-


<PAGE>

          in any permissible manner, and the Employee agrees to
          prosecute such contest to determination before any
          administrative tribunal, in a court of initial
          jurisdiction and in one or more appellate courts, as
          the Company shall determine; provided, however, that if
          the Company directs the Employee to pay such claim and
          sue for a refund, the Company shall advance the amount
          of such payment to the Employee, on an interest-free
          basis and shall indemnify and hold the Employee
          harmless, on an after-tax basis, from any Excise Tax or
          income tax (including interest or penalties with
          respect thereto) imposed with respect to such advance
          or with respect to any imputed income with respect to
          such advance; and further provided that any extension
          of the statute of limitations relating to payment of
          taxes for the taxable year of the Employee with respect
          to which such contested amount is claimed to be due is
          limited solely to such contested amount.  Furthermore,
          the Company's control of the contest shall be limited
          to issues with respect to which a Gross-Up Payment
          would be payable hereunder and the Employee shall be
          entitled to settle or contest, as the case may be, any
          other issues raised by the Internal Revenue Service or
          any other taxing authority.

               (d)  If, after the receipt by the Employee of an
          amount advanced by the Company pursuant to Section
          10(c), the Employee becomes entitled to receive any
          refund with respect to such claim, the Employee shall
          (subject to the Company's complying with the
          requirements of Section 10(c)) promptly pay to the
          Company the amount of such refund (together with any
          interest paid or credited thereon after taxes
          applicable thereto).  If, after the receipt by the
          Employee of an amount advanced by the Company pursuant
          to Section 10(c), a determination is made that the
          Employee shall not be entitled to any refund with
          respect to such claim and the Company does not notify
          the Employee in writing of its intent to contest such
          denial of refund prior to the expiration of 30 days
          after such determination, then such advance shall be
          forgiven and shall not be required to be repaid and the
          amount of such advance shall offset, to the extent
          thereof, the amount of Gross-Up Payment required to be
          paid.

          5.   The remainder of the Agreement shall remain in
full force and effect as written.

          6.   This Amendment shall be conditioned upon the
consummation of the merger between Enterra and Weatherford
pursuant to the Merger Agreement, and in the event such merger is
not so consummated, the Agreement shall remain in full force and
effect without regard to the changes contemplated by this
Amendment.

          IN WITNESS WHEREOF, the parties hereto have executed
this Amendment as of the day and year first above written.


                                     -5-

<PAGE>


                            ENTERRA CORPORATION


                            By:  /s/ Steven W. Krablin
                                 --------------------------
                                   Steven W. Krablin
                                   Vice President and Chief Financial Officer


                            /s/ Steven C. Grant
                            -------------------------------
                            Steven C. Grant







                                     -6-

<PAGE>

                   AMENDMENT 1995-1 TO SEVERANCE AGREEMENT


          This Amendment 1995-1 to Severance Agreement (the "Amendment"),
dated as of AUGUST 31, 1995, is between Enterra Corporation, a Delaware
corporation ("Enterra"), and EDWARD C. GRIMES (the "Employee").

          WHEREAS, on  FEBRUARY 8, 1990, Enterra and the Employee entered
into a Severance Agreement, dated as of FEBRUARY 8, 1990 (the "Agreement");

          WHEREAS, the parties hereto desire to amend certain provisions of
the Agreement regarding the severance compensation upon termination of
employment in connection with a Change of Control;

          WHEREAS, the parties hereto desire to condition the effectiveness
of this Amendment upon the consummation of the merger between Enterra and
Weatherford International Incorporated ("Weatherford") pursuant to the
Agreement and Plan of Merger, dated as of June 23, 1995, as amended as of
August 28, 1995, between Weatherford and Enterra (the "Merger Agreement"); and

          WHEREAS, capitalized terms used herein that are not defined herein
shall have the meanings ascribed thereto in the Agreement;

          NOW, THEREFORE, effective as of the Effective Time, as that term is
defined in the Merger Agreement, the parties hereto, intending to be legally
bound, agree as follows:

          1.   Section 1(p)(ii) of the Agreement is hereby amended by adding
thereto a new last paragraph, to read as follows:

          "Notwithstanding anything to the contrary under this
          Section 1(p)(ii), any resignation by the Employee at
          any time from the Effective Time, as that term is
          defined in the Agreement and Plan of Merger, dated as
          of June 23, 1995, as amended as of August 28, 1995,
          between Weatherford International Incorporated
          ("Weatherford") and the Company (the "Merger
          Agreement"), through August 12, 1996 shall constitute a
          'Termination upon Change of Control' under this
          Agreement."


<PAGE>

          2.   Section 1 of the Agreement is hereby amended by adding thereto
a new sentence at the end thereof, to read as follows:

          "With respect to all periods from and after the Effective Time,
          as that term is defined in the Merger Agreement, any reference in
          this Agreement to the 'Company' or the 'Common Stock' shall be
          deemed to be a reference to Weatherford or the common stock,
          par value $.10 per share, of Weatherford."

          3.   Section 4 of the Agreement is hereby amended by deleting
therefrom the introductory provision and subsection (a) thereof and
substituting the following therefor:

          "4.  OTHER PAYMENTS.  In the event of the Employee's
          Termination upon a Change of Control, the Company
          shall:

               (a)  deliver to the Employee within fifteen days
          after the Termination Date, unless the Employee has
          exercised such options and rights, such number of
          shares of the Company's Common Stock the total fair
          market value of which will be equal to the excess, if
          any, of the aggregate fair market value of the shares
          of the Company's Common Stock subject to all stock
          options and stock appreciation rights outstanding and
          unexercised immediately prior to the Termination Date,
          whether vested or unvested, granted to the Employee
          under the Stock Plan, over the aggregate exercise price
          of all such stock options.  For purposes of this
          paragraph, fair market value shall mean the highest of
          (x) the closing price of the Company's Common Stock on
          the business day immediately preceding the Termination
          Date, if such Common Stock is publicly traded at such
          date, (y) if such Common Stock is not publicly traded
          at the Termination Date, the value determined by an
          independent appraiser, such appraiser to be selected by
          the Employee and to be reasonably satisfactory to the
          Company (the fees and expenses of such appraiser to be
          borne by the Company), or (z) the highest per share
          price of the Company's Common Stock paid (in connection
          with the Change of Control or at any time thereafter)
          by the Person or group whose acquisition of shares of
          Common Stock of the Company has given rise to a Change
          of Control.  The Company shall take all corporate
          action necessary (i) to reserve for issuance a
          sufficient number of shares of the Common Stock for
          delivery pursuant to this section and (ii) to ensure
          that all shares of the Common Stock issued pursuant to
          this section are registered under the Securities Act of
          1933, as amended, listed on the New York Stock Exchange
          and may be freely transferred by the holders thereof;"

          4.   Section 10 of the Agreement is deleted and the following is

                                    -2-

<PAGE>

substituted therefor:

          "10. CERTAIN ADDITIONAL PAYMENTS BY THE COMPANY.

               (a)  Anything in this Agreement to the contrary
          notwithstanding and except as set forth below, in the
          event it shall be determined that any payment or
          distribution by the Company (whether by Enterra
          Corporation or Weatherford or by any affiliate of, or
          plan maintained by, either) to or for the benefit of
          the Employee (whether paid or payable or distributed or
          distributable pursuant to the terms of this Agreement,
          the Merger Agreement or otherwise, but determined
          without regard to any additional payments required
          under this Section 10) (a "Payment") would be subject
          to the excise tax imposed by Section 4999 of the Code
          or any interest or penalties are incurred by the
          Employee with respect to such excise tax (such excise
          tax, together with any such interest and penalties, are
          hereinafter collectively referred to as the "Excise
          Tax"), then the Employee shall be entitled to receive
          an additional payment (a "Gross-Up Payment") in an
          amount such that after payment by the Employee of all
          taxes (including any interest or penalties imposed with
          respect to such taxes), including without limitation,
          any income taxes (and any interest and penalties
          imposed with respect thereto) and Excise Tax imposed
          upon the Gross-Up Payment, the Employee retains an
          amount of the Gross-Up Payment equal to the Excise Tax
          imposed upon the Payments.

               (b)  Subject to the provisions of Section 10(c),
          all determinations required to be made under this
          Section 10, including whether and when a  Gross-Up
          Payment is required and the amount of such Gross-Up
          Payment and the assumptions to be utilized in arriving
          at such determination shall be made by Arthur Andersen
          LLP or, as provided below, such other certified public
          accounting firm as may be designated by the Employee
          (the "Accounting Firm") which shall provide detailed
          supporting calculations both to the Company and the
          Employee within 15 business days after the receipt of
          notice from the Employee that there has been a Payment,
          or such earlier time as is requested by the Company.
          In the event that the Accounting Firm is serving as
          accountant or auditor for the individual, entity or
          group effecting the Change of Control, the Employee
          shall appoint another nationally recognized accounting
          firm to make the determinations required hereunder
          (which accounting firm shall then be referred to as the
          Accounting Firm hereunder).  All fees and expenses of
          the Accounting Firm shall be borne solely by the
          Company.  Any Gross-Up Payment, as determined pursuant
          to this Section 10, shall be paid by the Company to the
          Employee within five days after the receipt of the
          Accounting Firm's determination.  Any determination by
          the Accounting Firm shall be binding upon the Company
          and the Employee.  As a result of the uncertainty in
          the application of Section 4999 of the Code at the time
          of the initial determination by the Accounting Firm


                                    -3-

<PAGE>

          hereunder, it is possible that Gross-Up Payments which
          will not have been made by the Company should have been
          made ("Underpayment"), consistent with the calculations
          required to be made hereunder.  In the event that the
          Company exhausts its remedies pursuant to Section 10(c)
          and the Employee thereafter is required to make a
          payment of any Excise Tax, the Accounting Firm shall
          determine the amount of the Underpayment that has
          occurred and any such Underpayment shall be promptly
          paid by the Company to or for the benefit of the
          Employee.

               (c)  The Employee shall notify the Company in
          writing of any claim by the Internal Revenue Service
          that, if successful, would require the payment by the
          Company of the Gross-Up Payment.  Such notification
          shall be given as soon as practicable, but no later
          than ten business days after the Employee is informed
          in writing of such claim, and shall apprise the Company
          of the nature of such claim and the date on which such
          claim is requested to be paid.  The Employee shall not
          pay such claim prior to the expiration of the 30-day
          period following the date on which he gives such notice
          to the Company (or such shorter period ending on the
          date that any payment of taxes with respect to such
          claim is due).  If the Company notifies the Employee in
          writing prior to the expiration of such period that it
          desires to contest such claim the Employee shall:

               (i)  give the Company any information reasonably
          requested by the Company relating to such claim,

               (ii)  take such action in connection with
          contesting such claim as the Company shall reasonably
          request in writing from time to time, including without
          limitation, accepting legal representation with respect
          to such claim by an attorney reasonably selected by the
          Company,

               (iii)  cooperate with the Company in good faith in
          order effectively to contest such claim, and

               (iv)  permit the Company to participate in any
          proceedings relating to such claims; provided, however,
          that the Company shall bear and pay directly all costs
          and expenses (including additional interest and
          penalties) incurred in connection with such costs and
          shall indemnify and hold the Employee harmless, on an
          after-tax basis, for any Excise Tax or income tax
          (including interest and penalties with respect thereto)
          imposed as a result of such representation and payment
          of costs and expenses.  Without limitation on the
          foregoing provisions of this Section 10(c), the Company
          shall control all proceedings taken in connection with
          such contest and, at its sole option, may pursue or
          forego any and all administrative appeals, proceedings,
          hearings and conferences with the taxing authority in
          respect of such claim and may, at its sole option,
          either direct the Employee to pay the tax claimed and
          sue for a refund or contest the claim


                                    -4-

<PAGE>

          in any permissible manner, and the Employee agrees to
          prosecute such contest to determination before any
          administrative tribunal, in a court of initial
          jurisdiction and in one or more appellate courts, as
          the Company shall determine; provided, however, that if
          the Company directs the Employee to pay such claim and
          sue for a refund, the Company shall advance the amount
          of such payment to the Employee, on an interest-free
          basis and shall indemnify and hold the Employee
          harmless, on an after-tax basis, from any Excise Tax or
          income tax (including interest or penalties with
          respect thereto) imposed with respect to such advance
          or with respect to any imputed income with respect to
          such advance; and further provided that any extension
          of the statute of limitations relating to payment of
          taxes for the taxable year of the Employee with respect
          to which such contested amount is claimed to be due is
          limited solely to such contested amount.  Furthermore,
          the Company's control of the contest shall be limited
          to issues with respect to which a Gross-Up Payment
          would be payable hereunder and the Employee shall be
          entitled to settle or contest, as the case may be, any
          other issues raised by the Internal Revenue Service or
          any other taxing authority.

               (d)  If, after the receipt by the Employee of an
          amount advanced by the Company pursuant to Section
          10(c), the Employee becomes entitled to receive any
          refund with respect to such claim, the Employee shall
          (subject to the Company's complying with the
          requirements of Section 10(c)) promptly pay to the
          Company the amount of such refund (together with any
          interest paid or credited thereon after taxes
          applicable thereto).  If, after the receipt by the
          Employee of an amount advanced by the Company pursuant
          to Section 10(c), a determination is made that the
          Employee shall not be entitled to any refund with
          respect to such claim and the Company does not notify
          the Employee in writing of its intent to contest such
          denial of refund prior to the expiration of 30 days
          after such determination, then such advance shall be
          forgiven and shall not be required to be repaid and the
          amount of such advance shall offset, to the extent
          thereof, the amount of Gross-Up Payment required to be
          paid.

          5.   The remainder of the Agreement shall remain in full force and
effect as written.

          6.   This Amendment shall be conditioned upon the consummation of
the merger between Enterra and Weatherford pursuant to the Merger Agreement,
and in the event such merger is not so consummated, the Agreement shall
remain in full force and effect without regard to the changes contemplated by
this Amendment.

          IN WITNESS WHEREOF, the parties hereto have executed
this Amendment as of the day and year first above written.

                                    -5-

<PAGE>



                              ENTERRA CORPORATION


                              By:  /s/ Steven W. Krablin
                                   --------------------------
                                   Steven W. Krablin
                                   Vice President and Chief Financial Officer


                                   /s/ Edward C. Grimes
                                   ------------------------------
                                   Edward C. Grimes


                                    -6-

<PAGE>

             AMENDMENT 1995-1 TO SEVERANCE AGREEMENT


          This Amendment 1995-1 to Severance Agreement (the "Amendment"),
dated as of AUGUST 31, 1995, is between Enterra Corporation, a Delaware
corporation ("Enterra"), and STEVEN W. KRABLIN (the "Employee").

          WHEREAS, on FEBRUARY 8, 1990, Enterra and the Employee entered
into a Severance Agreement, dated as of FEBRUARY 8, 1990 (the "Agreement");

          WHEREAS, the parties hereto desire to amend certain provisions of
the Agreement regarding the severance compensation upon termination of
employment in connection with a Change of Control;

          WHEREAS, the parties hereto desire to condition the effectiveness
of this Amendment upon the consummation of the merger between Enterra and
Weatherford International Incorporated ("Weatherford") pursuant to the
Agreement and Plan of Merger, dated as of June 23, 1995, as amended as of
August 28, 1995, between Weatherford and Enterra (the "Merger Agreement"); and

          WHEREAS, capitalized terms used herein that are not defined herein
shall have the meanings ascribed thereto in the Agreement;

          NOW, THEREFORE, effective as of the Effective Time, as that term is
defined in the Merger Agreement, the parties hereto, intending to be legally
bound, agree as follows:

          1.   Section 1(p)(ii) of the Agreement is hereby amended by adding
thereto a new last paragraph, to read as follows:

          "Notwithstanding anything to the contrary under this
          Section 1(p)(ii), any resignation by the Employee at
          any time from the Effective Time, as that term is
          defined in the Agreement and Plan of Merger, dated as
          of June 23, 1995, as amended as of August 28, 1995,
          between Weatherford International Incorporated
          ("Weatherford") and the Company (the "Merger
          Agreement"), through August 12, 1996 shall constitute a
          'Termination upon Change of Control' under this
          Agreement."


<PAGE>

          2.   Section 1 of the Agreement is hereby amended by adding thereto
a new sentence at the end thereof, to read as follows:

          "With respect to all periods from and after
          the Effective Time, as that term is defined
          in the Merger Agreement, any reference in
          this Agreement to the 'Company' or the
          'Common Stock' shall be deemed to be a
          reference to Weatherford or the common stock,
          par value $.10 per share, of Weatherford."

          3.   Section 4 of the Agreement is hereby amended by deleting
therefrom the introductory provision and subsection (a) thereof and
substituting the following therefor:

          "4.  OTHER PAYMENTS.  In the event of the Employee's Termination
          upon a Change of Control, the Company shall:

               (a)  deliver to the Employee within fifteen days
          after the Termination Date, unless the Employee has
          exercised such options and rights, such number of
          shares of the Company's Common Stock the total fair
          market value of which will be equal to the excess, if
          any, of the aggregate fair market value of the shares
          of the Company's Common Stock subject to all stock
          options and stock appreciation rights outstanding and
          unexercised immediately prior to the Termination Date,
          whether vested or unvested, granted to the Employee
          under the Stock Plan, over the aggregate exercise price
          of all such stock options.  For purposes of this
          paragraph, fair market value shall mean the highest of
          (x) the closing price of the Company's Common Stock on
          the business day immediately preceding the Termination
          Date, if such Common Stock is publicly traded at such
          date, (y) if such Common Stock is not publicly traded
          at the Termination Date, the value determined by an
          independent appraiser, such appraiser to be selected by
          the Employee and to be reasonably satisfactory to the
          Company (the fees and expenses of such appraiser to be
          borne by the Company), or (z) the highest per share
          price of the Company's Common Stock paid (in connection
          with the Change of Control or at any time thereafter)
          by the Person or group whose acquisition of shares of
          Common Stock of the Company has given rise to a Change
          of Control.  The Company shall take all corporate
          action necessary (i) to reserve for issuance a
          sufficient number of shares of the Common Stock for
          delivery pursuant to this section and (ii) to ensure
          that all shares of the Common Stock issued pursuant to
          this section are registered under the Securities Act of
          1933, as amended, listed on the New York Stock Exchange
          and may be freely transferred by the holders thereof;"

          4.   Section 10 of the Agreement is deleted and the following is


                                    -2-


<PAGE>

          substituted therefor:

          "10. CERTAIN ADDITIONAL PAYMENTS BY THE COMPANY.

               (a)  Anything in this Agreement to the contrary
          notwithstanding and except as set forth below, in the
          event it shall be determined that any payment or
          distribution by the Company (whether by Enterra
          Corporation or Weatherford or by any affiliate of, or
          plan maintained by, either) to or for the benefit of
          the Employee (whether paid or payable or distributed or
          distributable pursuant to the terms of this Agreement,
          the Merger Agreement or otherwise, but determined
          without regard to any additional payments required
          under this Section 10) (a "Payment") would be subject
          to the excise tax imposed by Section 4999 of the Code
          or any interest or penalties are incurred by the
          Employee with respect to such excise tax (such excise
          tax, together with any such interest and penalties, are
          hereinafter collectively referred to as the "Excise
          Tax"), then the Employee shall be entitled to receive
          an additional payment (a "Gross-Up Payment") in an
          amount such that after payment by the Employee of all
          taxes (including any interest or penalties imposed with
          respect to such taxes), including without limitation,
          any income taxes (and any interest and penalties
          imposed with respect thereto) and Excise Tax imposed
          upon the Gross-Up Payment, the Employee retains an
          amount of the Gross-Up Payment equal to the Excise Tax
          imposed upon the Payments.

               (b)  Subject to the provisions of Section 10(c),
          all determinations required to be made under this
          Section 10, including whether and when a  Gross-Up
          Payment is required and the amount of such Gross-Up
          Payment and the assumptions to be utilized in arriving
          at such determination shall be made by Arthur Andersen
          LLP or, as provided below, such other certified public
          accounting firm as may be designated by the Employee
          (the "Accounting Firm") which shall provide detailed
          supporting calculations both to the Company and the
          Employee within 15 business days after the receipt of
          notice from the Employee that there has been a Payment,
          or such earlier time as is requested by the Company.
          In the event that the Accounting Firm is serving as
          accountant or auditor for the individual, entity or
          group effecting the Change of Control, the Employee
          shall appoint another nationally recognized accounting
          firm to make the determinations required hereunder
          (which accounting firm shall then be referred to as the
          Accounting Firm hereunder).  All fees and expenses of
          the Accounting Firm shall be borne solely by the
          Company.  Any Gross-Up Payment, as determined pursuant
          to this Section 10, shall be paid by the Company to the
          Employee within five days after the receipt of the
          Accounting Firm's determination.  Any determination by
          the Accounting Firm shall be binding upon the Company
          and the Employee.  As a result of the uncertainty in
          the application of Section 4999 of the Code at the time
          of the initial determination by the Accounting Firm


                                    -3-

<PAGE>

          hereunder, it is possible that Gross-Up Payments which
          will not have been made by the Company should have been
          made ("Underpayment"), consistent with the calculations
          required to be made hereunder.  In the event that the
          Company exhausts its remedies pursuant to Section 10(c)
          and the Employee thereafter is required to make a
          payment of any Excise Tax, the Accounting Firm shall
          determine the amount of the Underpayment that has
          occurred and any such Underpayment shall be promptly
          paid by the Company to or for the benefit of the
          Employee.

               (c)  The Employee shall notify the Company in
          writing of any claim by the Internal Revenue Service
          that, if successful, would require the payment by the
          Company of the Gross-Up Payment.  Such notification
          shall be given as soon as practicable, but no later
          than ten business days after the Employee is informed
          in writing of such claim, and shall apprise the Company
          of the nature of such claim and the date on which such
          claim is requested to be paid.  The Employee shall not
          pay such claim prior to the expiration of the 30-day
          period following the date on which he gives such notice
          to the Company (or such shorter period ending on the
          date that any payment of taxes with respect to such
          claim is due).  If the Company notifies the Employee in
          writing prior to the expiration of such period that it
          desires to contest such claim the Employee shall:

               (i)  give the Company any information reasonably
          requested by the Company relating to such claim,

               (ii)  take such action in connection with
          contesting such claim as the Company shall reasonably
          request in writing from time to time, including without
          limitation, accepting legal representation with respect
          to such claim by an attorney reasonably selected by the
          Company,

               (iii)  cooperate with the Company in good faith in
          order effectively to contest such claim, and

               (iv)  permit the Company to participate in any
          proceedings relating to such claims; provided, however,
          that the Company shall bear and pay directly all costs
          and expenses (including additional interest and
          penalties) incurred in connection with such costs and
          shall indemnify and hold the Employee harmless, on an
          after-tax basis, for any Excise Tax or income tax
          (including interest and penalties with respect thereto)
          imposed as a result of such representation and payment
          of costs and expenses.  Without limitation on the
          foregoing provisions of this Section 10(c), the Company
          shall control all proceedings taken in connection with
          such contest and, at its sole option, may pursue or
          forego any and all administrative appeals, proceedings,
          hearings and conferences with the taxing authority in
          respect of such claim and may, at its sole option,
          either direct the Employee to pay the tax claimed and
          sue for a refund or contest the claim


                                    -4-


<PAGE>


          in any permissible manner, and the Employee agrees to
          prosecute such contest to determination before any
          administrative tribunal, in a court of initial
          jurisdiction and in one or more appellate courts, as
          the Company shall determine; provided, however, that if
          the Company directs the Employee to pay such claim and
          sue for a refund, the Company shall advance the amount
          of such payment to the Employee, on an interest-free
          basis and shall indemnify and hold the Employee
          harmless, on an after-tax basis, from any Excise Tax or
          income tax (including interest or penalties with
          respect thereto) imposed with respect to such advance
          or with respect to any imputed income with respect to
          such advance; and further provided that any extension
          of the statute of limitations relating to payment of
          taxes for the taxable year of the Employee with respect
          to which such contested amount is claimed to be due is
          limited solely to such contested amount.  Furthermore,
          the Company's control of the contest shall be limited
          to issues with respect to which a Gross-Up Payment
          would be payable hereunder and the Employee shall be
          entitled to settle or contest, as the case may be, any
          other issues raised by the Internal Revenue Service or
          any other taxing authority.

               (d)  If, after the receipt by the Employee of an
          amount advanced by the Company pursuant to Section
          10(c), the Employee becomes entitled to receive any
          refund with respect to such claim, the Employee shall
          (subject to the Company's complying with the
          requirements of Section 10(c)) promptly pay to the
          Company the amount of such refund (together with any
          interest paid or credited thereon after taxes
          applicable thereto).  If, after the receipt by the
          Employee of an amount advanced by the Company pursuant
          to Section 10(c), a determination is made that the
          Employee shall not be entitled to any refund with
          respect to such claim and the Company does not notify
          the Employee in writing of its intent to contest such
          denial of refund prior to the expiration of 30 days
          after such determination, then such advance shall be
          forgiven and shall not be required to be repaid and the
          amount of such advance shall offset, to the extent
          thereof, the amount of Gross-Up Payment required to be
          paid.

          5.   The remainder of the Agreement shall remain in full force and
effect as written.

          6.   This Amendment shall be conditioned upon the consummation of
the merger between Enterra and Weatherford pursuant to the Merger Agreement,
and in the event such merger is not so consummated, the Agreement shall
remain in full force and effect without regard to the changes contemplated by
this Amendment.

          IN WITNESS WHEREOF, the parties hereto have executed this Amendment
as of the day and year first above written.


                                    -5-

<PAGE>

                                       ENTERRA CORPORATION


                                       By:  /s/ M. Gay Mather
                                            -------------------------------
                                            M. Gay Mather
                                            Secretary

                                            /s/ Steven W. Krablin
                                            -------------------------------
                                            Steven W. Krablin


                                    -6-

<PAGE>

             AMENDMENT 1995-1 TO SEVERANCE AGREEMENT


          This Amendment 1995-1 to Severance Agreement (the
"Amendment"), dated as of AUGUST 31, 1995, is between Enterra
Corporation, a Delaware corporation ("Enterra"), and  WINDELL D.
NORRIS, JR.  (the "Employee").


          WHEREAS, on  NOVEMBER 10, 1993, Enterra and the
Employee entered into a Severance Agreement, dated as of
NOVEMBER 10, 1993  (the "Agreement");


          WHEREAS, the parties hereto desire to amend certain
provisions of the Agreement regarding the severance compensation
upon termination of employment in connection with a Change of
Control;


          WHEREAS, the parties hereto desire to condition the
effectiveness of this Amendment upon the consummation of the
merger between Enterra and Weatherford International Incorporated
("Weatherford") pursuant to the Agreement and Plan of Merger,
dated as of June 23, 1995, as amended as of August 28, 1995,
between Weatherford and Enterra (the "Merger Agreement"); and


          WHEREAS, capitalized terms used herein that are not
defined herein shall have the meanings ascribed thereto in the
Agreement;


          NOW, THEREFORE, effective as of the Effective Time, as
that term is defined in the Merger Agreement, the parties hereto,
intending to be legally bound, agree as follows:


          1.   Section 1 of the Agreement is hereby amended by
adding thereto a new sentence at the end thereof, to read as
follows:

          "With respect to all periods from and after
          the Effective Time, as that term is defined
          in the Agreement and Plan of Merger, dated as
          of June 23, 1995, as amended as of August 28,
          1995, between Weatherford International
          Incorporated ("Weatherford") and the Company,
          any reference in this Agreement to the
          'Company' or the 'Common Stock' shall be
          deemed to be a reference to Weatherford or
          the common


<PAGE>

          stock, par value $.10 per share, of Weatherford."

          2.   Section 4 of the Agreement is hereby amended by
deleting therefrom the introductory provision and subsection (a)
thereof and substituting the following therefor:

          "4.  OTHER PAYMENTS.  In the event of the Employee's
          Termination upon a Change of Control, the Company
          shall:

               (a)  deliver to the Employee within fifteen days
          after the Termination Date, unless the Employee has
          exercised such options and rights, such number of
          shares of the Company's Common Stock the total fair
          market value of which will be equal to the excess, if
          any, of the aggregate fair market value of the shares
          of the Company's Common Stock subject to all stock
          options and stock appreciation rights outstanding and
          unexercised immediately prior to the Termination Date,
          whether vested or unvested, granted to the Employee
          under the Stock Plan, over the aggregate exercise price
          of all such stock options.  For purposes of this
          paragraph, fair market value shall mean the highest of
          (x) the closing price of the Company's Common Stock on
          the business day immediately preceding the Termination
          Date, if such Common Stock is publicly traded at such
          date, (y) if such Common Stock is not publicly traded
          at the Termination Date, the value determined by an
          independent appraiser, such appraiser to be selected by
          the Employee and to be reasonably satisfactory to the
          Company (the fees and expenses of such appraiser to be
          borne by the Company), or (z) the highest per share
          price of the Company's Common Stock paid (in connection
          with the Change of Control or at any time thereafter)
          by the Person or group whose acquisition of shares of
          Common Stock of the Company has given rise to a Change
          of Control.  The Company shall take all corporate
          action necessary (i) to reserve for issuance a
          sufficient number of shares of the Common Stock for
          delivery pursuant to this section and (ii) to ensure
          that all shares of the Common Stock issued pursuant to
          this section are registered under the Securities Act of
          1933, as amended, listed on the New York Stock Exchange
          and may be freely transferred by the holders thereof;"

          3.   Section 10 of the Agreement is deleted and the
following is substituted therefor:

          "10. CERTAIN ADDITIONAL PAYMENTS BY THE COMPANY.

               (a)  Anything in this Agreement to the contrary
          notwithstanding and except as set forth below, in the
          event it shall be determined that any payment or
          distribution by the Company (whether by Enterra
          Corporation or Weatherford or by any affiliate of, or
          plan maintained by, either) to or


                                     -2-


<PAGE>

          for the benefit of the Employee (whether paid or
          payable or distributed or distributable pursuant to
          the terms of this Agreement, the Merger Agreement
          or otherwise, but determined without regard to any
          additional payments required under this Section 10)
          (a "Payment") would be subject to the excise tax
          imposed by Section 4999 of the Code or any interest
          or penalties are incurred by the Employee with
          respect to such excise tax (such excise tax,
          together with any such interest and penalties, are
          hereinafter collectively referred to as the "Excise
          Tax"), then the Employee shall be entitled to receive
          an additional payment (a "Gross-Up Payment") in an
          amount such that after payment by the Employee of all
          taxes (including any interest or penalties imposed with
          respect to such taxes), including without limitation,
          any income taxes (and any interest and penalties
          imposed with respect thereto) and Excise Tax imposed
          upon the Gross-Up Payment, the Employee retains an
          amount of the Gross-Up Payment equal to the Excise Tax
          imposed upon the Payments.

               (b)  Subject to the provisions of Section 10(c),
          all determinations required to be made under this
          Section 10, including whether and when a  Gross-Up
          Payment is required and the amount of such Gross-Up
          Payment and the assumptions to be utilized in arriving
          at such determination shall be made by Arthur Andersen
          LLP or, as provided below, such other certified public
          accounting firm as may be designated by the Employee
          (the "Accounting Firm") which shall provide detailed
          supporting calculations both to the Company and the
          Employee within 15 business days after the receipt of
          notice from the Employee that there has been a Payment,
          or such earlier time as is requested by the Company.
          In the event that the Accounting Firm is serving as
          accountant or auditor for the individual, entity or
          group effecting the Change of Control, the Employee
          shall appoint another nationally recognized accounting
          firm to make the determinations required hereunder
          (which accounting firm shall then be referred to as the
          Accounting Firm hereunder).  All fees and expenses of
          the Accounting Firm shall be borne solely by the
          Company.  Any Gross-Up Payment, as determined pursuant
          to this Section 10, shall be paid by the Company to the
          Employee within five days after the receipt of the
          Accounting Firm's determination.  Any determination by
          the Accounting Firm shall be binding upon the Company
          and the Employee.  As a result of the uncertainty in
          the application of Section 4999 of the Code at the time
          of the initial determination by the Accounting Firm
          hereunder, it is possible that Gross-Up Payments which
          will not have been made by the Company should have been
          made ("Underpayment"), consistent with the calculations
          required to be made hereunder.  In the event that the
          Company exhausts its remedies pursuant to Section 10(c)
          and the Employee thereafter is required to make a
          payment of any Excise Tax, the Accounting Firm shall
          determine the amount of the Underpayment that has
          occurred and any such Underpayment shall be promptly
          paid by the Company to or for the benefit of the
          Employee.


                                     -3-

<PAGE>

               (c)  The Employee shall notify the Company in
          writing of any claim by the Internal Revenue Service
          that, if successful, would require the payment by the
          Company of the Gross-Up Payment.  Such notification
          shall be given as soon as practicable, but no later
          than ten business days after the Employee is informed
          in writing of such claim, and shall apprise the Company
          of the nature of such claim and the date on which such
          claim is requested to be paid.  The Employee shall not
          pay such claim prior to the expiration of the 30-day
          period following the date on which he gives such notice
          to the Company (or such shorter period ending on the
          date that any payment of taxes with respect to such
          claim is due).  If the Company notifies the Employee in
          writing prior to the expiration of such period that it
          desires to contest such claim the Employee shall:

               (i)  give the Company any information reasonably
          requested by the Company relating to such claim,

               (ii)  take such action in connection with
          contesting such claim as the Company shall reasonably
          request in writing from time to time, including without
          limitation, accepting legal representation with respect
          to such claim by an attorney reasonably selected by the
          Company,

               (iii)  cooperate with the Company in good faith in
          order effectively to contest such claim, and

               (iv)  permit the Company to participate in any
          proceedings relating to such claims; provided, however,
          that the Company shall bear and pay directly all costs
          and expenses (including additional interest and
          penalties) incurred in connection with such costs and
          shall indemnify and hold the Employee harmless, on an
          after-tax basis, for any Excise Tax or income tax
          (including interest and penalties with respect thereto)
          imposed as a result of such representation and payment
          of costs and expenses.  Without limitation on the
          foregoing provisions of this Section 10(c), the Company
          shall control all proceedings taken in connection with
          such contest and, at its sole option, may pursue or
          forego any and all administrative appeals, proceedings,
          hearings and conferences with the taxing authority in
          respect of such claim and may, at its sole option,
          either direct the Employee to pay the tax claimed and
          sue for a refund or contest the claim in any
          permissible manner, and the Employee agrees to
          prosecute such contest to determination before any
          administrative tribunal, in a court of initial
          jurisdiction and in one or more appellate courts, as
          the Company shall determine; provided, however, that if
          the Company directs the Employee to pay such claim and
          sue for a refund, the Company shall advance the amount
          of such payment to the Employee, on an interest-free
          basis and shall indemnify and hold the Employee
          harmless, on an after-tax basis, from any Excise Tax or
          income tax (including interest or penalties with
          respect thereto) imposed with respect to such advance or


                                     -4-

<PAGE>

          with respect to any imputed income with respect to
          such advance; and further provided that any extension
          of the statute of limitations relating to payment of
          taxes for the taxable year of the Employee with respect
          to which such contested amount is claimed to be due is
          limited solely to such contested amount.  Furthermore,
          the Company's control of the contest shall be limited
          to issues with respect to which a Gross-Up Payment
          would be payable hereunder and the Employee shall be
          entitled to settle or contest, as the case may be, any
          other issues raised by the Internal Revenue Service or
          any other taxing authority.

               (d)  If, after the receipt by the Employee of an
          amount advanced by the Company pursuant to Section
          10(c), the Employee becomes entitled to receive any
          refund with respect to such claim, the Employee shall
          (subject to the Company's complying with the
          requirements of Section 10(c)) promptly pay to the
          Company the amount of such refund (together with any
          interest paid or credited thereon after taxes
          applicable thereto).  If, after the receipt by the
          Employee of an amount advanced by the Company pursuant
          to Section 10(c), a determination is made that the
          Employee shall not be entitled to any refund with
          respect to such claim and the Company does not notify
          the Employee in writing of its intent to contest such
          denial of refund prior to the expiration of 30 days
          after such determination, then such advance shall be
          forgiven and shall not be required to be repaid and the
          amount of such advance shall offset, to the extent
          thereof, the amount of Gross-Up Payment required to be
          paid.

          4.   The remainder of the Agreement shall remain in
full force and effect as written.

          5.   This Amendment shall be conditioned upon the
consummation of the merger between Enterra and Weatherford
pursuant to the Merger Agreement, and in the event such merger is
not so consummated, the Agreement shall remain in full force and
effect without regard to the changes contemplated by this
Amendment.

          IN WITNESS WHEREOF, the parties hereto have executed
this Amendment as of the day and year first above written.

                            ENTERRA CORPORATION


                            By:  /s/ Steven W. Krablin
                                 --------------------------
                                   Steven W. Krablin
                                   Vice President and Chief Financial Officer


                            /s/ Windell D. Norris, Jr.
                            -------------------------------
                            Windell D. Norris, Jr.





                                     -5-

<PAGE>

             AMENDMENT 1995-1 TO SEVERANCE AGREEMENT


          This Amendment 1995-1 to Severance Agreement (the "Amendment"),
dated as of AUGUST 31, 1995, is between Enterra Corporation, a Delaware
corporation ("Enterra"), and J. JOSEPH PERCLE  (the "Employee").

          WHEREAS, on FEBRUARY 21, 1991, Enterra and the Employee entered
into a Severance Agreement, dated as of   FEBRUARY 21, 1991 (the "Agreement");

          WHEREAS, the parties hereto desire to amend certain provisions of
the Agreement regarding the severance compensation upon termination of
employment in connection with a Change of Control;

          WHEREAS, the parties hereto desire to condition the effectiveness
of this Amendment upon the consummation of the merger between Enterra and
Weatherford International Incorporated ("Weatherford") pursuant to the
Agreement and Plan of Merger, dated as of June 23, 1995, as amended as of
August 28, 1995, between Weatherford and Enterra (the "Merger Agreement"); and

          WHEREAS, capitalized terms used herein that are not defined herein
shall have the meanings ascribed thereto in the Agreement;

          NOW, THEREFORE, effective as of the Effective Time, as that term is
defined in the Merger Agreement, the parties hereto, intending to be legally
bound, agree as follows:

          1.   Section 1(p)(ii) of the Agreement is hereby amended by adding
thereto a new last paragraph, to read as follows:

          "Notwithstanding anything to the contrary under this Section 1(p)(ii),
          any resignation by the Employee at any time from the Effective Time,
          as that term is defined in the Agreement and Plan of Merger, dated as
          of June 23, 1995, as amended as of August 28, 1995, between
          Weatherford International Incorporated ("Weatherford") and the
          Company (the "Merger Agreement"), through August 12, 1996 shall
          constitute a 'Termination upon Change of Control' under this
          Agreement."

<PAGE>

          2.   Section 1 of the Agreement is hereby amended by
adding thereto a new sentence at the end thereof, to read as
follows:

          "With respect to all periods from and after
          the Effective Time, as that term is defined
          in the Merger Agreement, any reference in
          this Agreement to the 'Company' or the
          'Common Stock' shall be deemed to be a
          reference to Weatherford or the common stock,
          par value $.10 per share, of Weatherford."

          3.   Section 4 of the Agreement is hereby amended by
deleting therefrom the introductory provision and subsection (a)
thereof and substituting the following therefor:

          "4.  OTHER PAYMENTS.  In the event of the Employee's
          Termination upon a Change of Control, the Company
          shall:

               (a)  deliver to the Employee within fifteen days
          after the Termination Date, unless the Employee has
          exercised such options and rights, such number of
          shares of the Company's Common Stock the total fair
          market value of which will be equal to the excess, if
          any, of the aggregate fair market value of the shares
          of the Company's Common Stock subject to all stock
          options and stock appreciation rights outstanding and
          unexercised immediately prior to the Termination Date,
          whether vested or unvested, granted to the Employee
          under the Stock Plan, over the aggregate exercise price
          of all such stock options.  For purposes of this
          paragraph, fair market value shall mean the highest of
          (x) the closing price of the Company's Common Stock on
          the business day immediately preceding the Termination
          Date, if such Common Stock is publicly traded at such
          date, (y) if such Common Stock is not publicly traded
          at the Termination Date, the value determined by an
          independent appraiser, such appraiser to be selected by
          the Employee and to be reasonably satisfactory to the
          Company (the fees and expenses of such appraiser to be
          borne by the Company), or (z) the highest per share
          price of the Company's Common Stock paid (in connection
          with the Change of Control or at any time thereafter)
          by the Person or group whose acquisition of shares of
          Common Stock of the Company has given rise to a Change
          of Control.  The Company shall take all corporate
          action necessary (i) to reserve for issuance a
          sufficient number of shares of the Common Stock for
          delivery pursuant to this section and (ii) to ensure
          that all shares of the Common Stock issued pursuant to
          this section are registered under the Securities Act of
          1933, as amended, listed on the New York Stock Exchange
          and may be freely transferred by the holders thereof;"

          4.   Section 10 of the Agreement is deleted and the
following is


                                     -2-

<PAGE>
substituted therefor:

          "10. CERTAIN ADDITIONAL PAYMENTS BY THE COMPANY.

               (a)  Anything in this Agreement to the contrary
          notwithstanding and except as set forth below, in the
          event it shall be determined that any payment or
          distribution by the Company (whether by Enterra
          Corporation or Weatherford or by any affiliate of, or
          plan maintained by, either) to or for the benefit of
          the Employee (whether paid or payable or distributed or
          distributable pursuant to the terms of this Agreement,
          the Merger Agreement or otherwise, but determined
          without regard to any additional payments required
          under this Section 10) (a "Payment") would be subject
          to the excise tax imposed by Section 4999 of the Code
          or any interest or penalties are incurred by the
          Employee with respect to such excise tax (such excise
          tax, together with any such interest and penalties, are
          hereinafter collectively referred to as the "Excise
          Tax"), then the Employee shall be entitled to receive
          an additional payment (a "Gross-Up Payment") in an
          amount such that after payment by the Employee of all
          taxes (including any interest or penalties imposed with
          respect to such taxes), including without limitation,
          any income taxes (and any interest and penalties
          imposed with respect thereto) and Excise Tax imposed
          upon the Gross-Up Payment, the Employee retains an
          amount of the Gross-Up Payment equal to the Excise Tax
          imposed upon the Payments.

               (b)  Subject to the provisions of Section 10(c),
          all determinations required to be made under this
          Section 10, including whether and when a  Gross-Up
          Payment is required and the amount of such Gross-Up
          Payment and the assumptions to be utilized in arriving
          at such determination shall be made by Arthur Andersen
          LLP or, as provided below, such other certified public
          accounting firm as may be designated by the Employee
          (the "Accounting Firm") which shall provide detailed
          supporting calculations both to the Company and the
          Employee within 15 business days after the receipt of
          notice from the Employee that there has been a Payment,
          or such earlier time as is requested by the Company.
          In the event that the Accounting Firm is serving as
          accountant or auditor for the individual, entity or
          group effecting the Change of Control, the Employee
          shall appoint another nationally recognized accounting
          firm to make the determinations required hereunder
          (which accounting firm shall then be referred to as the
          Accounting Firm hereunder).  All fees and expenses of
          the Accounting Firm shall be borne solely by the
          Company.  Any Gross-Up Payment, as determined pursuant
          to this Section 10, shall be paid by the Company to the
          Employee within five days after the receipt of the
          Accounting Firm's determination.  Any determination by
          the Accounting Firm shall be binding upon the Company
          and the Employee.  As a result of the uncertainty in
          the application of Section 4999 of the Code at the time
          of the initial determination by the Accounting Firm


                                      -3-

<PAGE>

          hereunder, it is possible that Gross-Up Payments which
          will not have been made by the Company should have been
          made ("Underpayment"), consistent with the calculations
          required to be made hereunder.  In the event that the
          Company exhausts its remedies pursuant to Section 10(c)
          and the Employee thereafter is required to make a
          payment of any Excise Tax, the Accounting Firm shall
          determine the amount of the Underpayment that has
          occurred and any such Underpayment shall be promptly
          paid by the Company to or for the benefit of the
          Employee.

               (c)  The Employee shall notify the Company in
          writing of any claim by the Internal Revenue Service
          that, if successful, would require the payment by the
          Company of the Gross-Up Payment.  Such notification
          shall be given as soon as practicable, but no later
          than ten business days after the Employee is informed
          in writing of such claim, and shall apprise the Company
          of the nature of such claim and the date on which such
          claim is requested to be paid.  The Employee shall not
          pay such claim prior to the expiration of the 30-day
          period following the date on which he gives such notice
          to the Company (or such shorter period ending on the
          date that any payment of taxes with respect to such
          claim is due).  If the Company notifies the Employee in
          writing prior to the expiration of such period that it
          desires to contest such claim the Employee shall:

               (i)  give the Company any information reasonably
          requested by the Company relating to such claim,

               (ii)  take such action in connection with
          contesting such claim as the Company shall reasonably
          request in writing from time to time, including without
          limitation, accepting legal representation with respect
          to such claim by an attorney reasonably selected by the
          Company,

               (iii)  cooperate with the Company in good faith in
          order effectively to contest such claim, and

               (iv)  permit the Company to participate in any
          proceedings relating to such claims; provided, however,
          that the Company shall bear and pay directly all costs
          and expenses (including additional interest and
          penalties) incurred in connection with such costs and
          shall indemnify and hold the Employee harmless, on an
          after-tax basis, for any Excise Tax or income tax
          (including interest and penalties with respect thereto)
          imposed as a result of such representation and payment
          of costs and expenses.  Without limitation on the
          foregoing provisions of this Section 10(c), the Company
          shall control all proceedings taken in connection with
          such contest and, at its sole option, may pursue or
          forego any and all administrative appeals, proceedings,
          hearings and conferences with the taxing authority in
          respect of such claim and may, at its sole option,
          either direct the Employee to pay the tax claimed and
          sue for a refund or contest the claim


                                     -4-

<PAGE>

          in any permissible manner, and the Employee agrees to
          prosecute such contest to determination before any
          administrative tribunal, in a court of initial
          jurisdiction and in one or more appellate courts, as
          the Company shall determine; provided, however, that if
          the Company directs the Employee to pay such claim and
          sue for a refund, the Company shall advance the amount
          of such payment to the Employee, on an interest-free
          basis and shall indemnify and hold the Employee
          harmless, on an after-tax basis, from any Excise Tax or
          income tax (including interest or penalties with
          respect thereto) imposed with respect to such advance
          or with respect to any imputed income with respect to
          such advance; and further provided that any extension
          of the statute of limitations relating to payment of
          taxes for the taxable year of the Employee with respect
          to which such contested amount is claimed to be due is
          limited solely to such contested amount.  Furthermore,
          the Company's control of the contest shall be limited
          to issues with respect to which a Gross-Up Payment
          would be payable hereunder and the Employee shall be
          entitled to settle or contest, as the case may be, any
          other issues raised by the Internal Revenue Service or
          any other taxing authority.

               (d)  If, after the receipt by the Employee of an
          amount advanced by the Company pursuant to Section
          10(c), the Employee becomes entitled to receive any
          refund with respect to such claim, the Employee shall
          (subject to the Company's complying with the
          requirements of Section 10(c)) promptly pay to the
          Company the amount of such refund (together with any
          interest paid or credited thereon after taxes
          applicable thereto).  If, after the receipt by the
          Employee of an amount advanced by the Company pursuant
          to Section 10(c), a determination is made that the
          Employee shall not be entitled to any refund with
          respect to such claim and the Company does not notify
          the Employee in writing of its intent to contest such
          denial of refund prior to the expiration of 30 days
          after such determination, then such advance shall be
          forgiven and shall not be required to be repaid and the
          amount of such advance shall offset, to the extent
          thereof, the amount of Gross-Up Payment required to be
          paid.

          5.   The remainder of the Agreement shall remain in
full force and effect as written.

          6.   This Amendment shall be conditioned upon the
consummation of the merger between Enterra and Weatherford
pursuant to the Merger Agreement, and in the event such merger is
not so consummated, the Agreement shall remain in full force and
effect without regard to the changes contemplated by this
Amendment.

          IN WITNESS WHEREOF, the parties hereto have executed
this Amendment as of the day and year first above written.


                                     -5-

<PAGE>


                            ENTERRA CORPORATION


                            By:  /s/ Steven W. Krablin
                                 ----------------------------
                                   Steven W. Krablin
                                   Vice President and Chief Financial Officer


                            /s/ J. Joseph Percle
                            ---------------------------------
                            J. Joseph Percle







                                     -6-

<PAGE>

                   AMENDMENT 1995-1 TO SEVERANCE AGREEMENT


          This Amendment 1995-1 to Severance Agreement (the "Amendment"),
dated as of AUGUST 31, 1995, is between Pipeline Induction Heat Limited
("PIH") and MICHAEL PETER SMITH (the "Employee").

          WHEREAS, Enterra Corporation, a Delaware corporation ("Enterra"),
is the ultimate parent company of PIH;

          WHEREAS, on  APRIL 1, 1993, PIH and the Employee entered into a
Severance Agreement, dated as of APRIL 1, 1993 (the "Agreement");

          WHEREAS, the parties hereto desire to amend certain provisions of
the Agreement regarding the severance compensation upon termination of
employment in connection with a Change of Control;

          WHEREAS, the parties hereto desire to condition the effectiveness
of this Amendment upon the consummation of the merger between Enterra and
Weatherford International Incorporated ("Weatherford") pursuant to the
Agreement and Plan of Merger, dated as of June 23, 1995, as amended as of
August 28, 1995, between Weatherford and Enterra (the "Merger Agreement"); and

          WHEREAS, capitalized terms used herein that are not defined herein
shall have the meanings ascribed thereto in the Agreement;

          NOW, THEREFORE, effective as of the Effective Time, as that term is
defined in the Merger Agreement, the parties hereto, intending to be legally
bound, agree as follows:

          1.   Section 1 of the Agreement is hereby amended by adding thereto
a new sentence at the end thereof, to read as follows:

          "With respect to all periods from and after the Effective Time,
          as that term is defined in the Agreement and Plan of Merger,
          dated as of June 23, 1995, as amended as of August 28, 1995,
          between Weatherford International Incorporated


<PAGE>

          ("Weatherford") and Enterra, any reference in this Agreement
          to 'Enterra' or the 'Common Stock' shall be deemed to be a
          reference to Weatherford or the common stock, par value $.10
          per share, of Weatherford."

          2.   Section 4 of the Agreement is hereby amended by deleting
therefrom the introductory provision and subsection (a) thereof and
substituting the following therefor:

          "4.  OTHER PAYMENTS.  In the event of the Employee's
          Termination upon a Change of Control, the Company
          shall:

               (a)  deliver to the Employee within fifteen days
          after the Termination Date, unless the Employee has
          exercised such options and rights, such number of
          shares of Enterra's Common Stock the total fair market
          value of which will be equal to the excess, if any, of
          the aggregate fair market value of the shares of
          Enterra's Common Stock subject to all stock options and
          stock appreciation rights outstanding and unexercised
          immediately prior to the Termination Date, whether
          vested or unvested, granted to the Employee under the
          Stock Plan, over the aggregate exercise price of all
          such stock options.  For purposes of this paragraph,
          fair market value shall mean the highest of (x) the
          closing price of Enterra's Common Stock on the business
          day immediately preceding the Termination Date, if such
          Common Stock is publicly traded at such date, (y) if
          such Common Stock is not publicly traded at the
          Termination Date, the value determined by an
          independent appraiser, such appraiser to be selected by
          the Employee and to be reasonably satisfactory to the
          Company (the fees and expenses of such appraiser to be
          borne by the Company), or (z) the highest per share
          price of Enterra's Common Stock paid (in connection
          with the Change of Control or at any time thereafter)
          by the Person or group whose acquisition of shares of
          Common Stock of Enterra has given rise to a Change of
          Control.  Enterra shall take all corporate action
          necessary (i) to reserve for issuance a sufficient
          number of shares of the Common Stock for delivery
          pursuant to this section and (ii) to ensure that all
          shares of the Common Stock issued pursuant to this
          section are registered under the Securities Act of
          1933, as amended, listed on the New York Stock Exchange
          and may be freely transferred by the holders thereof;"

          3.   The remainder of the Agreement shall remain in full force
and effect as written.

          4.   This Amendment shall be conditioned upon the
consummation of the merger between Enterra and Weatherford
pursuant to the Merger Agreement, and in the event such merger is
not so consummated, the Agreement shall remain in full force and
effect without regard to the changes contemplated by this
Amendment.


                                    -2-

<PAGE>

          IN WITNESS WHEREOF, the parties hereto have executed this Amendment
as of the day and year first above written.

                              ENTERRA CORPORATION


                              By: /s/ Steven W. Krablin
                                  ---------------------------
                                  Steven W. Krablin
                                  Vice President and Chief Financial Officer



                              PIPELINE INDUCTION HEAT LIMITED



                              By: /s/ C. Paul Evans
                                  ---------------------------
                                  C. Paul Evans
                                  Director


                              /s/ Michael Peter Smith
                              -------------------------------
                              Michael Peter Smith


                                    -3-



<PAGE>

             AMENDMENT 1995-1 TO SEVERANCE AGREEMENT


          This Amendment 1995-1 to Severance Agreement (the
"Amendment"), dated as of AUGUST 31, 1995, is between Enterra
Corporation, a Delaware corporation ("Enterra"), and  MICHAEL L.
STANSBERRY (the "Employee").


          WHEREAS, on  FEBRUARY 21, 1991, Enterra and the
Employee entered into a Severance Agreement, dated as of
FEBRUARY 21, 1991  (the "Agreement");


          WHEREAS, the parties hereto desire to amend certain
provisions of the Agreement regarding the severance compensation
upon termination of employment in connection with a Change of
Control;


          WHEREAS, the parties hereto desire to condition the
effectiveness of this Amendment upon the consummation of the
merger between Enterra and Weatherford International Incorporated
("Weatherford") pursuant to the Agreement and Plan of Merger,
dated as of June 23, 1995, as amended as of August 28, 1995,
between Weatherford and Enterra (the "Merger Agreement"); and


          WHEREAS, capitalized terms used herein that are not
defined herein shall have the meanings ascribed thereto in the
Agreement;


          NOW, THEREFORE, effective as of the Effective Time, as
that term is defined in the Merger Agreement, the parties hereto,
intending to be legally bound, agree as follows:


          1.   Section 1(p)(ii) of the Agreement is hereby
amended by adding thereto a new last paragraph, to read as
follows:

          "Notwithstanding anything to the contrary under this
          Section 1(p)(ii), any resignation by the Employee at
          any time from the Effective Time, as that term is
          defined in the Agreement and Plan of Merger, dated as
          of June 23, 1995, as amended as of August 28, 1995,
          between Weatherford International Incorporated
          ("Weatherford") and the Company (the "Merger
          Agreement"), through August 12, 1996 shall constitute a
          'Termination upon Change of Control' under this
          Agreement."


<PAGE>
          2.   Section 1 of the Agreement is hereby amended by
adding thereto a new sentence at the end thereof, to read as
follows:

          "With respect to all periods from and after
          the Effective Time, as that term is defined
          in the Merger Agreement, any reference in
          this Agreement to the 'Company' or the
          'Common Stock' shall be deemed to be a
          reference to Weatherford or the common stock,
          par value $.10 per share, of Weatherford."

          3.   Section 4 of the Agreement is hereby amended by
deleting therefrom the introductory provision and subsection (a)
thereof and substituting the following therefor:

          "4.  OTHER PAYMENTS.  In the event of the Employee's
          Termination upon a Change of Control, the Company
          shall:

               (a)  deliver to the Employee within fifteen days
          after the Termination Date, unless the Employee has
          exercised such options and rights, such number of
          shares of the Company's Common Stock the total fair
          market value of which will be equal to the excess, if
          any, of the aggregate fair market value of the shares
          of the Company's Common Stock subject to all stock
          options and stock appreciation rights outstanding and
          unexercised immediately prior to the Termination Date,
          whether vested or unvested, granted to the Employee
          under the Stock Plan, over the aggregate exercise price
          of all such stock options.  For purposes of this
          paragraph, fair market value shall mean the highest of
          (x) the closing price of the Company's Common Stock on
          the business day immediately preceding the Termination
          Date, if such Common Stock is publicly traded at such
          date, (y) if such Common Stock is not publicly traded
          at the Termination Date, the value determined by an
          independent appraiser, such appraiser to be selected by
          the Employee and to be reasonably satisfactory to the
          Company (the fees and expenses of such appraiser to be
          borne by the Company), or (z) the highest per share
          price of the Company's Common Stock paid (in connection
          with the Change of Control or at any time thereafter)
          by the Person or group whose acquisition of shares of
          Common Stock of the Company has given rise to a Change
          of Control.  The Company shall take all corporate
          action necessary (i) to reserve for issuance a
          sufficient number of shares of the Common Stock for
          delivery pursuant to this section and (ii) to ensure
          that all shares of the Common Stock issued pursuant to
          this section are registered under the Securities Act of
          1933, as amended, listed on the New York Stock Exchange
          and may be freely transferred by the holders thereof;"

          4.   Section 10 of the Agreement is deleted and the
following is

                                    -2-


<PAGE>

substituted therefor:

          "10. CERTAIN ADDITIONAL PAYMENTS BY THE COMPANY.

               (a)  Anything in this Agreement to the contrary
          notwithstanding and except as set forth below, in the
          event it shall be determined that any payment or
          distribution by the Company (whether by Enterra
          Corporation or Weatherford or by any affiliate of, or
          plan maintained by, either) to or for the benefit of
          the Employee (whether paid or payable or distributed or
          distributable pursuant to the terms of this Agreement,
          the Merger Agreement or otherwise, but determined
          without regard to any additional payments required
          under this Section 10) (a "Payment") would be subject
          to the excise tax imposed by Section 4999 of the Code
          or any interest or penalties are incurred by the
          Employee with respect to such excise tax (such excise
          tax, together with any such interest and penalties, are
          hereinafter collectively referred to as the "Excise
          Tax"), then the Employee shall be entitled to receive
          an additional payment (a "Gross-Up Payment") in an
          amount such that after payment by the Employee of all
          taxes (including any interest or penalties imposed with
          respect to such taxes), including without limitation,
          any income taxes (and any interest and penalties
          imposed with respect thereto) and Excise Tax imposed
          upon the Gross-Up Payment, the Employee retains an
          amount of the Gross-Up Payment equal to the Excise Tax
          imposed upon the Payments.

               (b)  Subject to the provisions of Section 10(c),
          all determinations required to be made under this
          Section 10, including whether and when a  Gross-Up
          Payment is required and the amount of such Gross-Up
          Payment and the assumptions to be utilized in arriving
          at such determination shall be made by Arthur Andersen
          LLP or, as provided below, such other certified public
          accounting firm as may be designated by the Employee
          (the "Accounting Firm") which shall provide detailed
          supporting calculations both to the Company and the
          Employee within 15 business days after the receipt of
          notice from the Employee that there has been a Payment,
          or such earlier time as is requested by the Company.
          In the event that the Accounting Firm is serving as
          accountant or auditor for the individual, entity or
          group effecting the Change of Control, the Employee
          shall appoint another nationally recognized accounting
          firm to make the determinations required hereunder
          (which accounting firm shall then be referred to as the
          Accounting Firm hereunder).  All fees and expenses of
          the Accounting Firm shall be borne solely by the
          Company.  Any Gross-Up Payment, as determined pursuant
          to this Section 10, shall be paid by the Company to the
          Employee within five days after the receipt of the
          Accounting Firm's determination.  Any determination by
          the Accounting Firm shall be binding upon the Company
          and the Employee.  As a result of the uncertainty in
          the application of Section 4999 of the Code at the time
          of the initial determination by the Accounting Firm


                                    -3-


<PAGE>

          hereunder, it is possible that Gross-Up Payments which
          will not have been made by the Company should have been
          made ("Underpayment"), consistent with the calculations
          required to be made hereunder.  In the event that the
          Company exhausts its remedies pursuant to Section 10(c)
          and the Employee thereafter is required to make a
          payment of any Excise Tax, the Accounting Firm shall
          determine the amount of the Underpayment that has
          occurred and any such Underpayment shall be promptly
          paid by the Company to or for the benefit of the
          Employee.

               (c)  The Employee shall notify the Company in
          writing of any claim by the Internal Revenue Service
          that, if successful, would require the payment by the
          Company of the Gross-Up Payment.  Such notification
          shall be given as soon as practicable, but no later
          than ten business days after the Employee is informed
          in writing of such claim, and shall apprise the Company
          of the nature of such claim and the date on which such
          claim is requested to be paid.  The Employee shall not
          pay such claim prior to the expiration of the 30-day
          period following the date on which he gives such notice
          to the Company (or such shorter period ending on the
          date that any payment of taxes with respect to such
          claim is due).  If the Company notifies the Employee in
          writing prior to the expiration of such period that it
          desires to contest such claim the Employee shall:

               (i)  give the Company any information reasonably
          requested by the Company relating to such claim,

               (ii)  take such action in connection with
          contesting such claim as the Company shall reasonably
          request in writing from time to time, including without
          limitation, accepting legal representation with respect
          to such claim by an attorney reasonably selected by the
          Company,

               (iii)  cooperate with the Company in good faith in
          order effectively to contest such claim, and

               (iv)  permit the Company to participate in any
          proceedings relating to such claims; provided, however,
          that the Company shall bear and pay directly all costs
          and expenses (including additional interest and
          penalties) incurred in connection with such costs and
          shall indemnify and hold the Employee harmless, on an
          after-tax basis, for any Excise Tax or income tax
          (including interest and penalties with respect thereto)
          imposed as a result of such representation and payment
          of costs and expenses.  Without limitation on the
          foregoing provisions of this Section 10(c), the Company
          shall control all proceedings taken in connection with
          such contest and, at its sole option, may pursue or
          forego any and all administrative appeals, proceedings,
          hearings and conferences with the taxing authority in
          respect of such claim and may, at its sole option,
          either direct the Employee to pay the tax claimed and
          sue for a refund or contest the claim

                                    -4-


<PAGE>

          in any permissible manner, and the Employee agrees to
          prosecute such contest to determination before any
          administrative tribunal, in a court of initial
          jurisdiction and in one or more appellate courts, as
          the Company shall determine; provided, however, that if
          the Company directs the Employee to pay such claim and
          sue for a refund, the Company shall advance the amount
          of such payment to the Employee, on an interest-free
          basis and shall indemnify and hold the Employee
          harmless, on an after-tax basis, from any Excise Tax or
          income tax (including interest or penalties with
          respect thereto) imposed with respect to such advance
          or with respect to any imputed income with respect to
          such advance; and further provided that any extension
          of the statute of limitations relating to payment of
          taxes for the taxable year of the Employee with respect
          to which such contested amount is claimed to be due is
          limited solely to such contested amount.  Furthermore,
          the Company's control of the contest shall be limited
          to issues with respect to which a Gross-Up Payment
          would be payable hereunder and the Employee shall be
          entitled to settle or contest, as the case may be, any
          other issues raised by the Internal Revenue Service or
          any other taxing authority.

               (d)  If, after the receipt by the Employee of an
          amount advanced by the Company pursuant to Section
          10(c), the Employee becomes entitled to receive any
          refund with respect to such claim, the Employee shall
          (subject to the Company's complying with the
          requirements of Section 10(c)) promptly pay to the
          Company the amount of such refund (together with any
          interest paid or credited thereon after taxes
          applicable thereto).  If, after the receipt by the
          Employee of an amount advanced by the Company pursuant
          to Section 10(c), a determination is made that the
          Employee shall not be entitled to any refund with
          respect to such claim and the Company does not notify
          the Employee in writing of its intent to contest such
          denial of refund prior to the expiration of 30 days
          after such determination, then such advance shall be
          forgiven and shall not be required to be repaid and the
          amount of such advance shall offset, to the extent
          thereof, the amount of Gross-Up Payment required to be
          paid.

          5.   The remainder of the Agreement shall remain in
full force and effect as written.

          6.   This Amendment shall be conditioned upon the
consummation of the merger between Enterra and Weatherford
pursuant to the Merger Agreement, and in the event such merger is
not so consummated, the Agreement shall remain in full force and
effect without regard to the changes contemplated by this
Amendment.

          IN WITNESS WHEREOF, the parties hereto have executed
this Amendment as of the day and year first above written.

                                    -5-

<PAGE>

                              ENTERRA CORPORATION


                              By:  /s/ Steven W. Krablin
                                   --------------------------
                                   Steven W. Krablin
                                   Vice President and Chief Financial Officer


                              /s/ Michael L. Stansberry
                              -------------------------------
                              Michael L. Stansberry


                                    -6-

<PAGE>

             AMENDMENT 1995-1 TO SEVERANCE AGREEMENT


          This Amendment 1995-1 to Severance Agreement (the
"Amendment"), dated as of AUGUST 31, 1995, is between Enterra
Corporation, a Delaware corporation ("Enterra"), and  D. DALE
WOOD  (the "Employee").


          WHEREAS, on  MARCH 5, 1991, Enterra and the Employee
entered into a Severance Agreement, dated as of MARCH 5, 1991
(the "Agreement");


          WHEREAS, the parties hereto desire to amend certain
provisions of the Agreement regarding the severance compensation
upon termination of employment in connection with a Change of
Control;


          WHEREAS, the parties hereto desire to condition the
effectiveness of this Amendment upon the consummation of the
merger between Enterra and Weatherford International Incorporated
("Weatherford") pursuant to the Agreement and Plan of Merger,
dated as of June 23, 1995, as amended as of August 28, 1995,
between Weatherford and Enterra (the "Merger Agreement"); and


          WHEREAS, capitalized terms used herein that are not
defined herein shall have the meanings ascribed thereto in the
Agreement;


          NOW, THEREFORE, effective as of the Effective Time, as
that term is defined in the Merger Agreement, the parties hereto,
intending to be legally bound, agree as follows:


          1.   Section 1(p)(ii) of the Agreement is hereby
amended by adding thereto a new last paragraph, to read as
follows:

          "Notwithstanding anything to the contrary under this
          Section 1(p)(ii), any resignation by the Employee at
          any time from the Effective Time, as that term is
          defined in the Agreement and Plan of Merger, dated as
          of June 23, 1995, as amended as of August 28, 1995,
          between Weatherford International Incorporated
          ("Weatherford") and the Company (the "Merger
          Agreement"), through August 12, 1996 shall constitute a
          'Termination upon Change of Control' under this
          Agreement."


<PAGE>

          2.   Section 1 of the Agreement is hereby amended by
adding thereto a new sentence at the end thereof, to read as
follows:

          "With respect to all periods from and after
          the Effective Time, as that term is defined
          in the Merger Agreement, any reference in
          this Agreement to the 'Company' or the
          'Common Stock' shall be deemed to be a
          reference to Weatherford or the common stock,
          par value $.10 per share, of Weatherford."

          3.   Section 4 of the Agreement is hereby amended by
deleting therefrom the introductory provision and subsection (a)
thereof and substituting the following therefor:

          "4.  OTHER PAYMENTS.  In the event of the Employee's
          Termination upon a Change of Control, the Company
          shall:

               (a)  deliver to the Employee within fifteen days
          after the Termination Date, unless the Employee has
          exercised such options and rights, such number of
          shares of the Company's Common Stock the total fair
          market value of which will be equal to the excess, if
          any, of the aggregate fair market value of the shares
          of the Company's Common Stock subject to all stock
          options and stock appreciation rights outstanding and
          unexercised immediately prior to the Termination Date,
          whether vested or unvested, granted to the Employee
          under the Stock Plan, over the aggregate exercise price
          of all such stock options.  For purposes of this
          paragraph, fair market value shall mean the highest of
          (x) the closing price of the Company's Common Stock on
          the business day immediately preceding the Termination
          Date, if such Common Stock is publicly traded at such
          date, (y) if such Common Stock is not publicly traded
          at the Termination Date, the value determined by an
          independent appraiser, such appraiser to be selected by
          the Employee and to be reasonably satisfactory to the
          Company (the fees and expenses of such appraiser to be
          borne by the Company), or (z) the highest per share
          price of the Company's Common Stock paid (in connection
          with the Change of Control or at any time thereafter)
          by the Person or group whose acquisition of shares of
          Common Stock of the Company has given rise to a Change
          of Control.  The Company shall take all corporate
          action necessary (i) to reserve for issuance a
          sufficient number of shares of the Common Stock for
          delivery pursuant to this section and (ii) to ensure
          that all shares of the Common Stock issued pursuant to
          this section are registered under the Securities Act of
          1933, as amended, listed on the New York Stock Exchange
          and may be freely transferred by the holders thereof;"

          4.   Section 10 of the Agreement is deleted and the
following is

                                    -2-


<PAGE>

substituted therefor:

          "10. CERTAIN ADDITIONAL PAYMENTS BY THE COMPANY.

               (a)  Anything in this Agreement to the contrary
          notwithstanding and except as set forth below, in the
          event it shall be determined that any payment or
          distribution by the Company (whether by Enterra
          Corporation or Weatherford or by any affiliate of, or
          plan maintained by, either) to or for the benefit of
          the Employee (whether paid or payable or distributed or
          distributable pursuant to the terms of this Agreement,
          the Merger Agreement or otherwise, but determined
          without regard to any additional payments required
          under this Section 10) (a "Payment") would be subject
          to the excise tax imposed by Section 4999 of the Code
          or any interest or penalties are incurred by the
          Employee with respect to such excise tax (such excise
          tax, together with any such interest and penalties, are
          hereinafter collectively referred to as the "Excise
          Tax"), then the Employee shall be entitled to receive
          an additional payment (a "Gross-Up Payment") in an
          amount such that after payment by the Employee of all
          taxes (including any interest or penalties imposed with
          respect to such taxes), including without limitation,
          any income taxes (and any interest and penalties
          imposed with respect thereto) and Excise Tax imposed
          upon the Gross-Up Payment, the Employee retains an
          amount of the Gross-Up Payment equal to the Excise Tax
          imposed upon the Payments.

               (b)  Subject to the provisions of Section 10(c),
          all determinations required to be made under this
          Section 10, including whether and when a  Gross-Up
          Payment is required and the amount of such Gross-Up
          Payment and the assumptions to be utilized in arriving
          at such determination shall be made by Arthur Andersen
          LLP or, as provided below, such other certified public
          accounting firm as may be designated by the Employee
          (the "Accounting Firm") which shall provide detailed
          supporting calculations both to the Company and the
          Employee within 15 business days after the receipt of
          notice from the Employee that there has been a Payment,
          or such earlier time as is requested by the Company.
          In the event that the Accounting Firm is serving as
          accountant or auditor for the individual, entity or
          group effecting the Change of Control, the Employee
          shall appoint another nationally recognized accounting
          firm to make the determinations required hereunder
          (which accounting firm shall then be referred to as the
          Accounting Firm hereunder).  All fees and expenses of
          the Accounting Firm shall be borne solely by the
          Company.  Any Gross-Up Payment, as determined pursuant
          to this Section 10, shall be paid by the Company to the
          Employee within five days after the receipt of the
          Accounting Firm's determination.  Any determination by
          the Accounting Firm shall be binding upon the Company
          and the Employee.  As a result of the uncertainty in
          the application of Section 4999 of the Code at the time
          of the initial determination by the Accounting Firm

                                    -3-

<PAGE>

          hereunder, it is possible that Gross-Up Payments which
          will not have been made by the Company should have been
          made ("Underpayment"), consistent with the calculations
          required to be made hereunder.  In the event that the
          Company exhausts its remedies pursuant to Section 10(c)
          and the Employee thereafter is required to make a
          payment of any Excise Tax, the Accounting Firm shall
          determine the amount of the Underpayment that has
          occurred and any such Underpayment shall be promptly
          paid by the Company to or for the benefit of the
          Employee.

               (c)  The Employee shall notify the Company in
          writing of any claim by the Internal Revenue Service
          that, if successful, would require the payment by the
          Company of the Gross-Up Payment.  Such notification
          shall be given as soon as practicable, but no later
          than ten business days after the Employee is informed
          in writing of such claim, and shall apprise the Company
          of the nature of such claim and the date on which such
          claim is requested to be paid.  The Employee shall not
          pay such claim prior to the expiration of the 30-day
          period following the date on which he gives such notice
          to the Company (or such shorter period ending on the
          date that any payment of taxes with respect to such
          claim is due).  If the Company notifies the Employee in
          writing prior to the expiration of such period that it
          desires to contest such claim the Employee shall:

               (i)  give the Company any information reasonably
          requested by the Company relating to such claim,

               (ii)  take such action in connection with
          contesting such claim as the Company shall reasonably
          request in writing from time to time, including without
          limitation, accepting legal representation with respect
          to such claim by an attorney reasonably selected by the
          Company,

               (iii)  cooperate with the Company in good faith in
          order effectively to contest such claim, and

               (iv)  permit the Company to participate in any
          proceedings relating to such claims; provided, however,
          that the Company shall bear and pay directly all costs
          and expenses (including additional interest and
          penalties) incurred in connection with such costs and
          shall indemnify and hold the Employee harmless, on an
          after-tax basis, for any Excise Tax or income tax
          (including interest and penalties with respect thereto)
          imposed as a result of such representation and payment
          of costs and expenses.  Without limitation on the
          foregoing provisions of this Section 10(c), the Company
          shall control all proceedings taken in connection with
          such contest and, at its sole option, may pursue or
          forego any and all administrative appeals, proceedings,
          hearings and conferences with the taxing authority in
          respect of such claim and may, at its sole option,
          either direct the Employee to pay the tax claimed and
          sue for a refund or contest the claim

                                    -4-


<PAGE>

          in any permissible manner, and the Employee agrees to
          prosecute such contest to determination before any
          administrative tribunal, in a court of initial
          jurisdiction and in one or more appellate courts, as
          the Company shall determine; provided, however, that if
          the Company directs the Employee to pay such claim and
          sue for a refund, the Company shall advance the amount
          of such payment to the Employee, on an interest-free
          basis and shall indemnify and hold the Employee
          harmless, on an after-tax basis, from any Excise Tax or
          income tax (including interest or penalties with
          respect thereto) imposed with respect to such advance
          or with respect to any imputed income with respect to
          such advance; and further provided that any extension
          of the statute of limitations relating to payment of
          taxes for the taxable year of the Employee with respect
          to which such contested amount is claimed to be due is
          limited solely to such contested amount.  Furthermore,
          the Company's control of the contest shall be limited
          to issues with respect to which a Gross-Up Payment
          would be payable hereunder and the Employee shall be
          entitled to settle or contest, as the case may be, any
          other issues raised by the Internal Revenue Service or
          any other taxing authority.

               (d)  If, after the receipt by the Employee of an
          amount advanced by the Company pursuant to Section
          10(c), the Employee becomes entitled to receive any
          refund with respect to such claim, the Employee shall
          (subject to the Company's complying with the
          requirements of Section 10(c)) promptly pay to the
          Company the amount of such refund (together with any
          interest paid or credited thereon after taxes
          applicable thereto).  If, after the receipt by the
          Employee of an amount advanced by the Company pursuant
          to Section 10(c), a determination is made that the
          Employee shall not be entitled to any refund with
          respect to such claim and the Company does not notify
          the Employee in writing of its intent to contest such
          denial of refund prior to the expiration of 30 days
          after such determination, then such advance shall be
          forgiven and shall not be required to be repaid and the
          amount of such advance shall offset, to the extent
          thereof, the amount of Gross-Up Payment required to be
          paid.

          5.   The remainder of the Agreement shall remain in
full force and effect as written.

          6.   This Amendment shall be conditioned upon the
consummation of the merger between Enterra and Weatherford
pursuant to the Merger Agreement, and in the event such merger is
not so consummated, the Agreement shall remain in full force and
effect without regard to the changes contemplated by this
Amendment.

          IN WITNESS WHEREOF, the parties hereto have executed
this Amendment as of the day and year first above written.

                                    -5-


<PAGE>

                              ENTERRA CORPORATION


                              By:  /s/ Steven W. Krablin
                                   --------------------------
                                   Steven W. Krablin
                                   Vice President and Chief Financial Officer


                              /s/ D. Dale Wood
                              -------------------------------
                              D. Dale Wood

                                    -6-


<PAGE>

                               October 5, 1995


Weatherford Enterra, Inc.
1360 Post Oak Boulevard, Suite 1000
Houston, Texas 77056

RE:   REGISTRATION STATEMENT ON FORM S-8 (THE "REGISTRATION STATEMENT")--
      WEATHERFORD ENTERRA, INC. 1991 STOCK OPTION PLAN
      WEATHERFORD ENTERRA, INC. RESTRICTED STOCK INCENTIVE PLAN
      D. DALE WOOD STOCK OPTION AGREEMENT
      ENTERRA CORPORATION SEVERANCE AGREEMENTS/WEATHERFORD INTERNATIONAL
        INCORPORATED CHANGE OF CONTROL AGREEMENTS

Dear Sirs:

     I am Senior Vice President, Secretary and General Counsel for
Weatherford Enterra, Inc., a Delaware corporation (the "Company"), and have
acted as legal counsel in connection with the authorization of an aggregate
of 1,959,500 shares (the "Shares") of the common stock, $.10 par value, of
the Company ("Common Stock") that may be issued (i) upon the exercise of
options granted pursuant to and subject to the terms and conditions of the
Weatherford Enterra, Inc. 1991 Stock Option Plan (the "1991 Option Plan");
(ii) upon the grant of shares pursuant to and subject to the terms and
conditions of the Weatherford Enterra, Inc. Restricted Stock Incentive Plan
(the "RSIP"); (iii) upon the exercise of options granted pursuant to the D.
Dale Wood Stock Option Agreement between D. Dale Wood and the  Company (the
"Wood Agreement"); and (iv) upon the cancellation of previously granted
options in accordance with the terms of the Enterra Corporation Severance
Agreements and the Weatherford International Incorporated Change of
Control Agreements (collectively, the "Agreements").

     In connection with rendering the opinions hereinafter expressed, I have
examined, among other things, the 1991 Option Plan, the RSIP, the Wood
Agreement and the Agreements, the Restated Certificate of Incorporation and
By-Laws of the Company, both as amended to date, the corporate proceedings
with respect to the 1991 Option Plan, the RSIP, the Wood Agreement and the
Agreements and such other corporate documents as I have deemed appropriate.


<PAGE>

Weatherford International Incorporated
October 5, 1995
Page 2

     Based on the foregoing, and having due regard for such legal
considerations as I have deemed relevant, I am of the opinion that the Shares
have been duly authorized for issuance and, when issued in accordance with
the respective terms of  the 1991 Option Plan, the RSIP, the Wood Agreement
and the Agreements, the Shares will be validly issued, fully paid and
nonassessable.

     I hereby consent to the filing of this opinion as an exhibit to the
Registration Statement on Form S-8 registering the Shares and to the
reference to me under the heading "Interests of Named Experts and Counsel" in
said Registration Statement.

     The opinions expressed herein are limited exclusively to the General
Corporation Law of the State of Delaware and the Federal securities law of
the United States of America.

     This opinion is provided at your request and solely in connection with
the Registration Statement. This opinion may be relied upon only by you and
may not be quoted from or referred to or copies delivered to any other person
without my prior written consent, except as provided herein.

     As of the date hereof, I own beneficially 37,221 shares of Common Stock
and hold options to purchase an additional 28,000 shares of Common Stock, of
which 16,166 options are immediately exercisable (all such numbers reflect
the one-for-two reverse stock split effected by the Company on October 5,
1995).

                                       Very truly yours,


                                       /s/ H. Suzanne Thomas
                                       ---------------------------

                                       H. Suzanne Thomas

HST:cl



<PAGE>

           CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS




     As independent public accountants, we hereby consent to the
incorporation by reference in this Registration Statement on Form S-8 of our
reports dated March 10, 1995, included in the Form 10-K of Weatherford
International Incorporated (now known as Weatherford Enterra, Inc.), for the
year ended December 31, 1994 and to all references to our firm included in
this Registration Statement.

ARTHUR ANDERSEN LLP

Houston, Texas
October 5, 1995




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