ENSCO INTERNATIONAL INC
8-K, 1996-04-01
DRILLING OIL & GAS WELLS
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<PAGE>







                     SECURITIES AND EXCHANGE COMMISSION
                           Washington, D.C. 20549


                                  FORM 8-K


                               CURRENT REPORT

                     Pursuant to Section 13 or 15(d) of
                    the Securities Exchange Act of 1934




     Date of Report (Date of earliest event reported):  March 21, 1996




                      ENSCO INTERNATIONAL INCORPORATED
           (Exact name of registrant as specified in its charter)



                                  DELAWARE
               (State or other jurisdiction of incorporation)

         1-8097                                     76-0232579     
  (Commission File Number)              (IRS Employer Identification No.)





    2700 Fountain Place, 1445 Ross Avenue, Dallas, Texas     75202-2792
          (Address of principal executive office)            (Zip Code)


    Registrant's telephone number, including area code:  (214) 922-1500<PAGE>



ITEM 7.   EXHIBITS

EXHIBIT
- -------

  99.6         Press release dated March 22, 1996

  99.7         Agreement and plan of merger,  dated March 21, 1996, between
               ENSCO  International  Incorporated, DDC  Acquisition Company
               and Dual Drilling Company

  99.8         Voting  Agreement,  dated  March  21,  1996,  between  ENSCO
               International Incorporated and Dual Invest AS<PAGE>





                                      SIGNATURES


           Pursuant  to  the requirements  of the  Securities  Exchange Act  of
      1934, the  registrant has  duly caused  this report to  be signed  on its
      behalf by the undersigned hereunto duly authorized.

       
                                              ENSCO INTERNATIONAL INCORPORATED



                                          By: /s/  H. E. Malone             
                                              ----------------------------
                                              H. E. Malone, Controller
                                              and Chief Accounting Officer



      Date:   April 1, 1996
             ---------------<PAGE>

<PAGE>






                                NEWS RELEASE

                      ENSCO INTERNATIONAL INCORPORATED

___________________________________________________________________________



Contact:     Richard A. LeBlanc
             (214) 922-1500



                ENSCO SIGNS DEFINITIVE AGREEMENT TO ACQUIRE
                           DUAL DRILLING COMPANY

         Dallas,  Texas, March 22, 1996....ENSCO International Incorporated
(NYSE:  ESV) and DUAL DRILLING  COMPANY (NASDAQ:  DUAL) announced that they
have signed a  definitive agreement for the  acquisition of DUAL by  ENSCO.
The agreement follows a letter of intent signed by the two companies at the
end of January which was previously announced.  Under the agreement, DUAL's
common stockholders will  receive 0.625  shares of ENSCO  common stock  for
each share of DUAL common stock.  ENSCO will issue approximately 10 million
shares of ENSCO  common stock  to DUAL's stockholders  in the  transaction,
increasing ENSCO's  total common  shares outstanding to  approximately 70.5
million.   ENSCO  intends to  apply purchase  accounting principles  to the
acquisition.

         ENSCO also announced that it had received early termination of the
waiting period  for the transaction  under applicable U.S.  antitrust laws.
DUAL's financial advisors, Simmons & Company International, have rendered a
fairness opinion on the transaction for the benefit of DUAL's shareholders,
and  DUAL's  board  has  resolved  to  recommend  the  transaction  to  its
stockholders  at a special stockholders'  meeting that is  expected to take
place  in May.  DUAL's majority stockholder,  Dual Invest AS, has agreed to
vote in  favor  of the  acquisition.   ENSCO  stockholder approval  of  the
acquisition and the related issuance of ENSCO common stock is not required.
The Companies expect to  complete the merger soon after  the acquisition is
approved at the special meeting of DUAL stockholders.

         Completion  of  the  merger will  constitute  a change  of control
allowing the  holders of DUAL's  9 7/8% Senior Subordinated  Notes due 2004
(the "Notes"), the option to put the Notes to DUAL at a price equal to 101%
of the principal amount of the Notes.  Assuming the Notes continue to trade
at a  significant premium to the  put option price, ENSCO  expects that the
Notes  will remain  outstanding  following the  acquisition  as a  separate
obligation of DUAL, which would then be a wholly owned subsidiary of ENSCO.

         The acquisition  will further  strengthen ENSCO's position  in the
premium  jackup rig market, and  will expand the  Company's operations into
the Asian/Pacific  region.  The  combined company will  have a fleet  of 54
offshore drilling rigs and 37 oilfield support vessels.<PAGE>




         ENSCO, headquartered  in Dallas, Texas, is  a leading provider  of
contract drilling  and marine transportation services  to the international
petroleum industry.   DUAL, also headquartered in Dallas, Texas, operates a
modern fleet of  ten premium  jackup rigs and  ten self-contained  platform
rigs.<PAGE>

<PAGE>




___________________________________________________________________________
___________________________________________________________________________






                        AGREEMENT AND PLAN OF MERGER


                                   Among


                     ENSCO INTERNATIONAL INCORPORATED,

                          DDC ACQUISITION COMPANY

                                    and

                           DUAL DRILLING COMPANY



                            Dated March 21, 1996





___________________________________________________________________________
___________________________________________________________________________<PAGE>



                             TABLE OF CONTENTS
                              ----------------

SECTION                                                                PAGE
- -------                                                                ----
                                 ARTICLE I

                                 THE MERGER

1.01.  The Merger  . . . . . . . . . . . . . . . . . . . . . . . . . .   1
1.02.  Effective Time; Closing   . . . . . . . . . . . . . . . . . . .   2
1.03.  Effect of the Merger  . . . . . . . . . . . . . . . . . . . . .   2
1.04.  Certificate of Incorporation; Bylaws  . . . . . . . . . . . . .   2
1.05.  Directors and Officers  . . . . . . . . . . . . . . . . . . . .   2

                                 ARTICLE II

             CONVERSION OF SECURITIES; EXCHANGE OF CERTIFICATES

2.01.  Conversion of Securities  . . . . . . . . . . . . . . . . . . .   3
2.02.  Exchange of Certificates  . . . . . . . . . . . . . . . . . . .   4
2.03.  Stock Transfer Books  . . . . . . . . . . . . . . . . . . . . .   6
2.04.  Stock Options   . . . . . . . . . . . . . . . . . . . . . . . .   6

                                ARTICLE III

                REPRESENTATIONS AND WARRANTIES OF THE TARGET

3.01.  Organization and Qualification; Subsidiaries  . . . . . . . . .   7
3.02.  Certificate of Incorporation and Bylaws   . . . . . . . . . . .   8
3.03.  Capitalization  . . . . . . . . . . . . . . . . . . . . . . . .   8
3.04.  Authority Relative to This Agreement  . . . . . . . . . . . . .   9
3.05.  No Conflict; Required Filings and Consents  . . . . . . . . . .   9
3.06.  Permits; Compliance   . . . . . . . . . . . . . . . . . . . . .  10
3.07.  SEC Filings; Financial Statements   . . . . . . . . . . . . . .  10
3.08.  Absence of Certain Changes or Events  . . . . . . . . . . . . .  11
3.09.  Absence of Litigation   . . . . . . . . . . . . . . . . . . . .  13
3.10.  Employee Benefit Matters  . . . . . . . . . . . . . . . . . . .  13
3.11.  Labor Matters   . . . . . . . . . . . . . . . . . . . . . . . .  18
3.12.  Intellectual Property   . . . . . . . . . . . . . . . . . . . .  18
3.13.  Taxes   . . . . . . . . . . . . . . . . . . . . . . . . . . . .  18
3.14.  Environmental Matters   . . . . . . . . . . . . . . . . . . . .  19
3.15.  Opinion of Financial Advisor  . . . . . . . . . . . . . . . . .  21
3.16.  Vote Required   . . . . . . . . . . . . . . . . . . . . . . . .  21
3.17.  Brokers   . . . . . . . . . . . . . . . . . . . . . . . . . . .  21
3.18.  Tangible Property   . . . . . . . . . . . . . . . . . . . . . .  21
3.19.  Bareboat Charter  . . . . . . . . . . . . . . . . . . . . . . .  21
3.20.  Material Contracts  . . . . . . . . . . . . . . . . . . . . . .  21
3.21.  Parachute Payments  . . . . . . . . . . . . . . . . . . . . . .  22
3.22.  Certain Business Practices  . . . . . . . . . . . . . . . . . .  22
3.23.  Real Property and Leases  . . . . . . . . . . . . . . . . . . .  22
3.24.  Insurance   . . . . . . . . . . . . . . . . . . . . . . . . . .  23
3.25.  Accounting and Tax Matters  . . . . . . . . . . . . . . . . . .  24
3.26.  Board Recommendation  . . . . . . . . . . . . . . . . . . . . .  24
3.27.  Change in Control   . . . . . . . . . . . . . . . . . . . . . .  24
3.28.  Target Drilling Rigs  . . . . . . . . . . . . . . . . . . . . .  25<PAGE>


                             TABLE OF CONTENTS
                                (continued)

SECTION                                                                PAGE
- -------                                                                ----

3.29.  Sime-Dual Sdn Bhd   . . . . . . . . . . . . . . . . . . . . . .  26
3.30.  Accounts Receivable   . . . . . . . . . . . . . . . . . . . . .  27

 
                                 ARTICLE IV

                 REPRESENTATIONS AND WARRANTIES OF ACQUIROR
                              AND ACQUIROR SUB

4.01.  Corporate Organization and Qualification  . . . . . . . . . . .  27
4.02.  Certificate of Incorporation and Bylaws   . . . . . . . . . . .  27
4.03.  Capitalization  . . . . . . . . . . . . . . . . . . . . . . . .  28
4.04.  Authority Relative to This Agreement  . . . . . . . . . . . . .  28
4.05.  No Conflict; Required Filings and Consents  . . . . . . . . . .  29
4.06.  SEC Filings; Financial Statements   . . . . . . . . . . . . . .  29
4.07.  Absence of Certain Changes or Events  . . . . . . . . . . . . .  30
4.08.  Brokers   . . . . . . . . . . . . . . . . . . . . . . . . . . .  31
4.09.  Taxes   . . . . . . . . . . . . . . . . . . . . . . . . . . . .  31

 
                                 ARTICLE V

                   CONDUCT OF BUSINESS PENDING THE MERGER

5.01.  Conduct of Business by the Target Pending the Merger  . . . . .  32
5.02.  Conduct of Business by Acquiror Pending the Merger  . . . . . .  33


                                 ARTICLE VI

                           ADDITIONAL AGREEMENTS

6.01.  Registration Statement; Proxy Statement   . . . . . . . . . . .  33
6.02.  Target Stockholder Meeting  . . . . . . . . . . . . . . . . . .  35
6.03.  Appropriate Action; Consents; Filings   . . . . . . . . . . . .  35
6.04.  Access to Information; Confidentiality  . . . . . . . . . . . .  37
6.05.  No Solicitation of Transactions.  . . . . . . . . . . . . . . .  37
6.06.  Directors' and Officers' Indemnification  . . . . . . . . . . .  38
6.07.  Obligations of Acquiror Sub   . . . . . . . . . . . . . . . . .  39
6.08.  Public Announcements  . . . . . . . . . . . . . . . . . . . . .  39
6.09.  Delivery of SEC Documents   . . . . . . . . . . . . . . . . . .  39
6.10.  Environmental Assessment  . . . . . . . . . . . . . . . . . . .  39
6.11.  Notification of Certain Matters   . . . . . . . . . . . . . . .  39
6.12.  Further Action  . . . . . . . . . . . . . . . . . . . . . . . .  40
6.13.  Employee Benefits   . . . . . . . . . . . . . . . . . . . . . .  40
6.14.  Affiliates; Accounting and Tax Treatment  . . . . . . . . . . .  44
6.15.  Certain Employees   . . . . . . . . . . . . . . . . . . . . . .  45

                                ARTICLE VII

                          CONDITIONS TO THE MERGER<PAGE>


                             TABLE OF CONTENTS
                                (continued)

SECTION                                                                PAGE
- -------                                                                ----

7.01.  Conditions to the Obligations of Each Party   . . . . . . . . .  45
7.02.  Conditions to the Obligations of Acquiror and Acquiror Sub  . .  45
7.03.  Conditions to the Obligations of the Target   . . . . . . . . .  47

                                ARTICLE VIII

                     TERMINATION, AMENDMENT AND WAIVER
8.01.  Termination   . . . . . . . . . . . . . . . . . . . . . . . . .  48
8.02.  Fees and Expenses   . . . . . . . . . . . . . . . . . . . . . .  49
8.03.  Amendment   . . . . . . . . . . . . . . . . . . . . . . . . . .  50
8.04.  Waiver  . . . . . . . . . . . . . . . . . . . . . . . . . . . .  50

                                 ARTICLE IX

                             GENERAL PROVISIONS

9.01.  Non-Survival of Representations, Warranties and Agreements  . .  51
9.02.  Notices   . . . . . . . . . . . . . . . . . . . . . . . . . . .  51
9.03.  Certain Definitions   . . . . . . . . . . . . . . . . . . . . .  52
9.04.  Severability  . . . . . . . . . . . . . . . . . . . . . . . . .  53
9.05.  Assignment; Binding Effect; Benefit   . . . . . . . . . . . . .  53
9.06.  Incorporation of Schedules  . . . . . . . . . . . . . . . . . .  53
9.07.  Specific Performance  . . . . . . . . . . . . . . . . . . . . .  54
9.08.  Governing Law   . . . . . . . . . . . . . . . . . . . . . . . .  54
9.09.  Headings  . . . . . . . . . . . . . . . . . . . . . . . . . . .  54
9.10.  Counterparts  . . . . . . . . . . . . . . . . . . . . . . . . .  54
9.11.  Waiver of Jury Trial  . . . . . . . . . . . . . . . . . . . . .  54
9.12.  Entire Agreement  . . . . . . . . . . . . . . . . . . . . . . .  54

EXHIBIT A - Certificate of Incorporation
EXHIBIT B - Affiliate Agreement
EXHIBIT C - Legal Opinion for Counsel for the Target
EXHIBIT D - Legal Opinion for Counsel for Acquiror<PAGE>


                               DEFINED TERMS


 TERM                                       LOCATION
 ----                                       --------
 Acquiror                                   Recitals
 Acquiror Common Stock                      2.01(a)(i)
 Acquiror Disclosure Schedules              Article IV
 Acquiror Preferred Stock                   4.03
 Acquiror SEC Reports                       4.06(a)
 Acquiror Sub                               Recitals
 Acquiror Sub Common Stock                  2.01(a)(iii)
 Acquiror Subsidiary                        4.03
 affiliate                                  9.03(a)
 Affiliate Agreements                       6.14
 Agreement                                  Recitals
 AICPA Statement                            7.02(b)
 Alternative Proposal Fee                   8.02(a)
 Average Trading Price                      2.02(e)
 beneficial owner                           9.03(b)
 Benefit Restoration Plan                   6.13(e) 
 Board                                      6.05(iii)
 Blue Sky Laws                              3.05(b)(i)
 Business Combination Transaction           8.02(a)
 Business Combination Transaction Proposal  8.01(d)
 business day                               9.03(c)
 Cancelable Shares                          2.01(a)(i)
 Certificate of Merger                      1.02
 Certificates                               2.02(b)
 Claim                                      6.06(b)
 Closing                                    2.02
 Closing Agreement                          6.13(a)(ii)
 COBRA Coverage                             6.13(b)<PAGE>



 TERM                                       LOCATION
 ----                                       --------

 Code                                       Recitals
 Confidentiality Agreement                  9.13
 control                                    9.03(d)
 controlled by                              9.03(d)
 Delaware Law                               Recitals
 DOL                                        6.13(n)
 Dual Medical Plan                          6.13(b)
 Dual Unit Plan                             6.13(j)
 Effective Time                             1.02
 Employee Severance Plans                   6.13(h)
 Environmental Claims                       3.14(b)(viii)
 Environmental Laws                         3.14(a)(ii)
 Environmental Permits                      3.14(b)(ii)
 Exchange Act                               3.05(b)(i)
 Exchange Agent                             2.02(a)
 Exchange Fund                              2.02(a)
 Exchange Ratio                             2.01(a)(i)
 ERISA                                      3.10
 First Amendment                            3.29(i)
 401(k) Plan                                6.13(a)(i)
 401(k) Plan Amendment                      6.13(a)(i)
 Governmental Authority                     3.06
 Group Insurance Plans                      6.13(b)
 Hazardous Substances                       3.14(a)(i)
 HSR Act                                    3.05(b)(i) 
 IRS                                        3.10(c)
 Joint Bareboat Charter                     3.29(vii)
 Joint Operating Agreement                  3.29(vi)
 Laws                                       3.05(a)(y)(ii)
 Long-Term Options                          2.04(a)(i)<PAGE>



 TERM                                       LOCATION
 ----                                       --------

 Material Adverse Effect                    3.01
 Material Contract                          3.20
 Merger                                     Recitals
 NASD                                       6.08(b)
 1995 Balance Sheet                         3.07(c)
 Non-Employee Options                       2.04(b)
 NYSE                                       2.02(E)
 Officer Incentive Plan                     6.13(g)
 Order                                      7.01(b)
 Original Agreement                         3.29(i)
 PBGC                                       3.10(c)
 person                                     9.03(e)
 Plans                                      3.10(i)
 Post-Employment Benefits                   3.10(k)(iv)
 Pre-Merger Period                          3.25(a)(i)
 Prior Thrift Plan                          6.13(a)(i)
 Proxy Statement                            6.01(a)
 Registration Statement                     6.01(a)
 Retiree Medical Plan                       6.13(c)
 Sale                                       3.25(b)
 SD                                         3.29(i)
 SDD                                        3.29(i) 
 SEC                                        3.07(a)(ii)
 Secretary                                  1.02
 SERP                                       6.13(d)(i)
 Securities Act                             3.05(b)(i)
 Shareholders Agreement                     3.29(i)
 Specified Expenses                         8.02(d)
 Sime-Dual                                  3.29(i)
 Stockholder Plan                           3.25(b)<PAGE>



 TERM                                       LOCATION
 ----                                       --------

 Subsidiary                                 3.01
 subsidiary                                 9.03(f)
 subsidiaries                               9.03(f)
 Surviving Corporation                      1.01
 Target                                     Recitals
 Target Affiliate                           6.14
 Target Banker                              3.16
 Target Common Stock                        2.01(a)(i)
 Target Disclosure Schedule                 Article III
 Target Drilling Rigs                       3.19
 Target Employment Contracts                3.10(ii)
 Target Options                             2.04(h)
 Target Permits                             3.06
 Target Preferred Stock                     3.03
 Target SEC Reports                         3.07(a)
 Target s Stockholder Meeting               6.02
 Terminating Acquiror Breach                8.01(f)
 Terminating Target Breach                  8.01(f)
 Third Party Provisions                     9.05
 Transactions                               Recitals
 Trust                                      6.13(f)(i)
 Trustee                                    6.13(f) (i)
 under common control                       9.03(d)
 U.S. GAAP                                  3.07(b)
 Vessels                                    3.28(a)<PAGE>


          AGREEMENT  AND PLAN OF  MERGER, dated as of  March 21, 1996 (this
"Agreement"),  by and  among ENSCO  International Incorporated,  a Delaware
corporation ("Acquiror"), DDC  Acquisition Company, a Delaware  corporation
and a direct,  wholly owned  subsidiary of Acquiror  ("Acquiror Sub"),  and
DUAL DRILLING COMPANY, a Delaware corporation (the "Target").

          WHEREAS,  Acquiror  Sub,  upon  the  terms  and  subject  to  the
conditions  of this Agreement and  in accordance with  the Delaware General
Corporation Law  ("Delaware Law"), will merge with and into the Target (the
"Merger");

          WHEREAS,  the Board of Directors of the Target (i) has determined
that the Merger is in the best interests of the Target and its stockholders
and approved and  adopted this Agreement and  the transactions contemplated
hereby ("Transactions")  and (ii) has unanimously  recommended approval and
adoption of this Agreement and approval of the Merger by, and directed that
this Agreement and  the Merger be submitted to a  vote of, the stockholders
of the Target;

          WHEREAS, the  Boards of Directors  of Acquiror  and Acquiror  Sub
have  determined that  the Merger  is in  the best  interests  of Acquiror,
Acquiror  Sub  and their  stockholders  and have  unanimously  approved and
adopted this Agreement and the Transactions; and

          WHEREAS,  Acquiror   and  the  Target  intend   that  the  Merger
constitute a  tax-free  "reorganization"  within  the  meaning  of  Section
368(a)(1)(A) of the Internal Revenue Code of 1986 (the "Code") by reason of
Section 368(a)(2)(E) of the Code.

          NOW,  THEREFORE, in consideration of the foregoing and the mutual
covenants  and agreements  herein contained,  and intending  to  be legally
bound  hereby,  Acquiror,  Acquiror Sub  and  the  Target  hereby agree  as
follows:


                                 ARTICLE I

                                 THE MERGER

          SECTION 1.01.   THE MERGER.   Upon the terms  and subject to  the
conditions set forth  in this  Agreement, and in  accordance with  Delaware
Law, at  the Effective Time (as hereinafter defined), Acquiror Sub shall be
merged with and into  the Target.  As a result of  the Merger, the separate
corporate  existence of  Acquiror  Sub shall  cease  and the  Target  shall
continue  as  the  surviving  corporation of  the  Merger  (the  "Surviving
Corporation").  The name of the Surviving Corporation shall be Dual Holding
Company.

          SECTION  1.02.     EFFECTIVE  TIME;  CLOSING.    As  promptly  as
practicable and in no event later than the first business day following the
satisfaction or  waiver of the conditions set forth in Article VII (or such
other  date as may be agreed in writing by each of the parties hereto), the
parties  hereto shall  cause  the  Merger to  be  consummated by  filing  a
certificate of merger (the  "Certificate of Merger") with the  Secretary of
State  of  the State  of  Delaware (the  "Secretary")  in such  form  as is
required  by, and executed in  accordance with the  relevant provisions of,
Delaware Law.   The term  "Effective Time" means  the date and time  of the<PAGE>


filing of the Certificate of Merger with the Secretary (or  such later time
as may be agreed in writing by each of the parties  hereto and specified in
the Certificate  of  Merger).   Immediately  prior  to the  filing  of  the
Certificate  of Merger,  a closing  (the  "Closing") will  be  held at  the
offices of  Baker & McKenzie, 2001  Ross Avenue, Suite 4500,  Dallas, Texas
(or such other place and time as the parties may agree).

          SECTION 1.03.   EFFECT OF THE  MERGER.  The effect  of the Merger
shall be as provided in the applicable provisions of Delaware Law.

          SECTION  1.04.  CERTIFICATE OF INCORPORATION; BYLAWS.  (a) At the
Effective  Time,  the Certificate  of Incorporation  of  the Target,  as in
effect immediately prior to the Effective Time, shall be amended  as of the
Effective Time by  operation of this Agreement and by  virtue of the Merger
without  any further  action  by  the  stockholders  or  directors  of  the
Surviving Corporation  to  read in its entirety as  set forth in EXHIBIT  A
attached hereto.

          (b)  At the Effective  Time, the  Bylaws of Acquiror  Sub, as  in
effect immediately prior to the Effective  Time, shall be the Bylaws of the
Surviving  Corporation until  thereafter amended  as  provided by  law, the
Certificate of Incorporation of the Surviving Corporation and such Bylaws.

          SECTION 1.05.  DIRECTORS AND OFFICERS.  The directors of Acquiror
Sub  immediately prior to the Effective Time shall be the initial directors
of the Surviving  Corporation, each to hold  office in accordance  with the
Certificate of Incorporation and Bylaws  of the Surviving Corporation until
a successor is elected or appointed and has qualified or until the earliest
of such director's death, resignation, removal or disqualification, and the
officers of Acquiror  Sub immediately prior to the  Effective Time shall be
the initial officers of the Surviving Corporation, in each case until their
respective  successors are duly elected  or appointed and  qualified, or as
otherwise provided in the Bylaws of the Surviving Corporation.


                                 ARTICLE II

             CONVERSION OF SECURITIES; EXCHANGE OF CERTIFICATES

          SECTION  2.01.  CONVERSION OF SECURITIES.  At the Effective Time,
by virtue of the Merger and without any action on the part of Acquiror Sub,
the Target or the holders of any of the following shares of capital stock:

          (a)  Subject  to the other provisions of this Section 2.01 and to
     Section 2.02:

               (i)  each share  of common stock,  $0.01 par  value, of  the
          Target ("Target Common Stock") issued and outstanding immediately
          prior to the  Effective Time  (excluding any shares  held by  the
          Target,  Acquiror or Acquiror Sub or any other direct or indirect
          wholly  owned subsidiary  of Acquiror  or the  Target immediately
          prior to the Merger (the "Cancelable Shares")) shall be converted
          into the right to  receive .625 shares (the "Exchange  Ratio") of
          common  stock,  $0.10 par  value  ("Acquiror  Common Stock"),  of
          Acquiror.    At the  Effective Time,  all  such shares  of Target
          Common  Stock shall  no longer  be outstanding  and automatically
          shall  be  canceled and  cease  to  exist,  and each  certificate<PAGE>


          previously evidencing any such  shares shall thereafter represent
          the right  to receive a  certificate representing  the shares  of
          Acquiror Common  Stock into  which such shares  of Target  Common
          Stock  were converted in the Merger.  The holders of certificates
          previously   evidencing  such  shares   of  Target  Common  Stock
          outstanding immediately  prior to the Effective  Time shall cease
          to  have any rights with respect  to such shares of Target Common
          Stock  except as  otherwise provided  herein or by  Delaware Law.
          Such certificates previously  evidencing shares of  Target Common
          Stock  shall  be exchanged  for  certificates  representing whole
          shares of Acquiror Common Stock issued in consideration  therefor
          upon  the surrender of  such certificates in  accordance with the
          provisions of  Section 2.02.   No  fractional shares of  Acquiror
          Common  Stock shall  be  issued, and,  in  lieu thereof,  a  cash
          payment shall be made pursuant to Section 2.02(e); 

               (ii) each Cancelable  Share shall automatically  be canceled
          and cease to exist, and no consideration shall be paid or payable
          in respect of such shares; and

               (iii)     each  share of  common stock,  par value  $.01 per
          share,  of Acquiror Sub ("Acquiror  Sub Common Stock") issued and
          outstanding immediately  prior to  the  Effective Time  shall  be
          converted into  and  become one  validly issued,  fully paid  and
          nonassessable share of common stock of the Surviving Corporation.

          (b)  If between the date of this Agreement and the Effective Time
     the outstanding shares of Acquiror Common Stock or Target Common Stock
     shall  have been  changed  into a  different  number  of shares  or  a
     different class, by  reason of any  stock dividend,  reclassification,
     recapitalization, split, division, combination or  exchange of shares,
     the Exchange Ratio  shall be correspondingly adjusted  to reflect such
     stock dividend, reclassification,  recapitalization, split,  division,
     combination or exchange of shares.  

          SECTION  2.02.  EXCHANGE OF  CERTIFICATES.  (a)   EXCHANGE AGENT.
As of or before the Effective Time, Acquiror shall deposit,  or shall cause
to be deposited, with a bank or  trust company organized under the laws of,
and having  an  office in,  the  United States  or  any state  thereof  and
designated by Acquiror and approved by Target, which approval  shall not be
unreasonably  withheld  (the "Exchange  Agent"),  for  the benefit  of  the
holders of shares of Target  Common Stock, for exchange in  accordance with
this Article II, through the Exchange Agent, certificates representing  the
whole shares of Acquiror Common Stock  issuable pursuant to Section 2.01 in
exchange for  outstanding  shares of  Target Common  Stock and  cash in  an
amount sufficient  to permit payment of cash  payable in lieu of fractional
shares  pursuant  to  Section  2.02(e)  (such  certificates  for shares  of
Acquiror  Common Stock, together  with any dividends  or distributions with
respect thereto, and cash,  being hereinafter referred to as  the "Exchange
Fund").   The Exchange  Agent shall,  pursuant to  irrevocable instructions
from Acquiror, deliver the  Acquiror Common Stock and cash  contemplated to
be issued pursuant to Section 2.01 out of the Exchange Fund.

          (b)  EXCHANGE PROCEDURES.    As soon  as  reasonably  practicable
after the Effective Time, Acquiror will instruct the Exchange Agent to mail
to each holder of record of a certificate or certificates which immediately
prior to the Effective  Time evidenced outstanding shares of  Target Common<PAGE>


Stock (other than Cancelable  Shares) (the "Certificates") (i) a  letter of
transmittal and (ii) instructions for use in effecting the surrender of the
Certificates  in exchange  for certificates  evidencing shares  of Acquiror
Common  Stock.   Upon surrender  of a  Certificate for cancellation  to the
Exchange Agent together with such letter of transmittal, duly executed, and
such  other customary  documents  as  may  be  required  pursuant  to  such
instructions, the holder of  such Certificate shall be entitled  to receive
in  exchange therefor a certificate representing the number of whole shares
of Acquiror  Common Stock which  such holder  has the right  to receive  in
respect  of the shares of Target Common  Stock formerly represented by such
Certificate  (after taking into account  all shares of  Target Common Stock
then held  by such holder), together with cash in lieu of fractional shares
of Acquiror  Common Stock  to  which such  holder is  entitled pursuant  to
Section  2.02(e) and any dividends or distributions to which such holder is
entitled  pursuant to Section  2.02(c), and the  Certificate so surrendered
shall  forthwith be  canceled.    Subject  to  Section  2.02(h),  under  no
circumstances will any holder  of a Certificate be entitled to  receive any
part of the shares of Acquiror Common Stock into which the shares of Target
Common Stock  were converted  in the Merger  until such  holder shall  have
surrendered such Certificate.   In the event of a  transfer of ownership of
shares  of Target  Common Stock  which is  not registered  in  the transfer
records of the Target, the shares of Acquiror Common Stock  into which such
shares of Target Common Stock were converted in the Merger may be issued in
accordance  with this  Article  II to  the  transferee if  the  Certificate
evidencing  such shares of Target Common Stock is presented to the Exchange
Agent,  accompanied by all documents  required to evidence  and effect such
transfer and by evidence that any applicable stock transfer taxes have been
paid.    Until  surrendered as  contemplated  by  this  Section 2.02,  each
Certificate  shall be  deemed  at any  time  after  the Effective  Time  to
evidence  only the  right to  receive upon  such surrender  the certificate
representing the  number of whole shares of Acquiror Common Stock which the
holder has the right to  receive in respect of the shares of  Target Common
Stock formerly represented by such  Certificate (after taking into  account
all shares of Target Common Stock then held by such  holder), together with
cash in  lieu of fractional shares  of Acquiror Common Stock  to which such
holder  is  entitled  pursuant to  Section  2.02(e)  and  any dividends  or
distributions to which such holder is entitled pursuant to Section 2.02(c).
Acquiror agrees, from and after the Effective Time, to treat the holders of
certificates formerly representing shares of Target Common Stock as holding
of record the whole number of shares of Acquiror Common  Stock for purposes
of voting and determinations of quorums for voting.  

          (c)  DISTRIBUTIONS WITH RESPECT TO UNEXCHANGED SHARES OF ACQUIROR
COMMON STOCK.   No dividends or other distributions declared  or made after
the Effective Time with respect to Acquiror Common Stock with a record date
after  the Effective Time shall be paid  to the holder of any unsurrendered
Certificate  with respect to the shares of Acquiror Common Stock into which
such shares of Target Common Stock were converted in the Merger,  until the
holder of such Certificate shall surrender such Certificate for exchange as
provided  herein.   Subject  to the  effect  of applicable  laws, following
surrender  of any such  Certificate, there shall  be paid to  the holder of
such Certificate, in  addition to the  certificates representing shares  of
Acquiror  Common Stock as provided in 2.02(b), without interest, the amount
of dividends or other  distributions with a record date after the Effective
Time theretofore paid  with respect to the whole shares  of Acquiror Common
Stock evidenced by such Certificate.<PAGE>


          (d)  NO FURTHER RIGHTS  IN TARGET  COMMON STOCK.   All shares  of
Acquiror Common Stock  delivered upon  conversion of the  shares of  Target
Common Stock in accordance  with the terms hereof (including  any cash paid
or other distributions pursuant to Section 2.02(c) and (e)) shall be deemed
to have been  issued in full satisfaction of all  rights pertaining to such
shares of Target Common Stock.

          (e)  NO FRACTIONAL  SHARES.  No certificates  or scrip evidencing
fractional  shares  of  Acquiror Common  Stock  shall  be  issued upon  the
surrender for exchange of  Certificates, but in lieu thereof each holder of
shares of Target Common Stock who  would otherwise be entitled to receive a
fraction of a share of Acquiror Common Stock,  after aggregating all shares
of Acquiror Common  Stock which such  holder would be  entitled to  receive
under  Section 2.01, shall receive  an amount equal  to the Average Trading
Price  multiplied by the  fraction of a  share of Acquiror  Common Stock to
which  such  holder would  otherwise be  entitled,  without interest.   The
"Average Trading Price" shall be the  average of the closing sale prices of
the Acquiror  Common Stock on the  New York Stock Exchange  ("NYSE") or, if
not listed on the NYSE, any exchange on which the Acquiror Common Stock may
then be principally  listed (as reported by The Wall  Street Journal or, if
not reported  thereby,  by  another  authoritative  source)  over  the  ten
business days immediately preceding the Effective Time.

          (f)  TERMINATION OF EXCHANGE FUND.   Any portion of the  Exchange
Fund  which remains undistributed to the holders of Target Common Stock for
one  year after  the Effective  Time shall  be delivered to  Acquiror, upon
demand, and, subject to Section 2.02(g), any holders of Target Common Stock
who have not  theretofore complied  with this Article  II shall  thereafter
look only to Acquiror for the shares of Acquiror Common Stock, any cash  in
lieu  of fractional shares  of Acquiror Common  Stock and any  dividends or
other distributions to  which they  are entitled pursuant  to this  Section
2.02.

          (g)  NO   LIABILITY.     Neither  Acquiror   nor  the   Surviving
Corporation shall be liable to any  holder of shares of Target Common Stock
for  any  shares  of  Acquiror  Common  Stock  or  cash  (or  dividends  or
distributions with respect thereto) delivered to a public official pursuant
to any applicable abandoned property, escheat or similar law.

          (h)  LOST CERTIFICATES.  If any Certificate shall have been lost,
stolen or destroyed, upon  the making of an  affidavit of that fact  by the
person claiming  such Certificate to be  lost, stolen or  destroyed and, if
required by the Surviving Corporation, the posting by such person of a bond
in  such reasonable  amount  as the  Surviving  Corporation may  direct  as
indemnity  against any claim  that may be  made against it  with respect to
such Certificate, the Exchange Agent will issue in exchange for  such lost,
stolen or destroyed Certificate  the shares of Acquiror Common  Stock, cash
in lieu of  fractional shares of Acquiror Common Stock and unpaid dividends
and distributions on shares of Acquiror Common Stock deliverable in respect
thereof pursuant to this Agreement.

          SECTION 2.03.  STOCK TRANSFER BOOKS.  At the Effective Time,  the
stock transfer books  of the Target shall  be closed and there shall  be no
further  registration  of  transfers  of  shares  of  Target  Common  Stock
thereafter on the  records of the Target.  At or  after the Effective Time,
any Certificates presented to the Exchange Agent or Acquiror for any reason
shall  be converted  into the right  to receive  shares of  Acquiror Common<PAGE>


Stock,  cash in lieu of fractional shares  of Acquiror Common Stock and any
dividends or other  distributions to  which they are  entitled pursuant  to
Section 2.02.

          SECTION 2.04.  STOCK OPTIONS. (a) Pursuant to  the Dual  Drilling
Company  1993  Long-Term Incentive  Plan,  all  outstanding options  issued
thereunder  (the  "Long-Term  Options")  shall  be  surrendered  as  of the
Effective  Time, automatically and  without any action  on the part  of the
holder thereof, and the Surviving Corporation shall within two (2) Business
Days following the Effective Time, pay to each holder of a Long-Term Option
an amount of cash  equal to (A) the excess,  if any, of (i) the  average of
the  closing  prices of  Acquiror Common  Stock on  the  NYSE for  the five
Business Days immediately  preceding the Effective  Time multiplied by  the
Exchange  Ratio over (ii) the  exercise price under  such Long-Term Option,
(B) multiplied by the number of shares covered by such Long-Term Option.

          (b)  On or before the Effective Time, the Target will endeavor to
enter  into one  or  more agreements  with the  holders of  all outstanding
options under the Dual Drilling Company  Non-Employee Director Stock Option
Plan (the "Non-Employee Options" and, together with the  Long-Term Options,
the "Target Options"), pursuant  to which such holders shall  surrender all
such Non-Employee  Options to the  Target no  later than two  business days
prior  to the  Effective Time.    Pursuant to  each such  agreement and  as
consideration for such  surrender, the Surviving  Corporation shall  within
two (2) Business Days following the Effective Time pay to the holder of any
Non-Employee  Option an amount in cash equal to  (A) the excess, if any, of
(i) the average  of the closing prices of Acquiror Common Stock on the NYSE
for  the  five  Business  Days  immediately preceding  the  Effective  Time
multiplied by  the Exchange Ratio  over (ii) the exercise  price under such
Non-Employee Option, (B) multiplied by the number of shares covered by such
Non-Employee Option.

          (c)  In performing its obligations pursuant to this Section 2.04,
the Target shall  fully comply with  the terms and  conditions of the  Dual
Drilling  Company  1993 Long-Term  Incentive Plan  and  the   Dual Drilling
Company Non-Employee Director Stock Option Plan. 


                                ARTICLE III

                REPRESENTATIONS AND WARRANTIES OF THE TARGET

          Except as set forth  in the Disclosure Schedule delivered  by the
Target and  signed by the Target  and Acquiror for identification  prior to
the  execution  and delivery  of  this  Agreement (the  "Target  Disclosure
Schedule"), which shall identify exceptions by specific section references,
the  Target hereby  represents and  warrants to  Acquiror and  Acquiror Sub
that:

          SECTION 3.01.  ORGANIZATION AND QUALIFICATION; SUBSIDIARIES.  The
Target is a corporation, and each subsidiary of the Target (a "Subsidiary")
is a corporation or limited partnership (or in the case of the Sime-Dual, a
Malaysian  company), in each case  duly organized, validly  existing and in
good standing under the  laws of the jurisdiction  of its organization  and
has  the requisite  corporate or  partnership power  and authority  to own,
lease and operate  its properties and to carry on its business as it is now
being  conducted.  The Target  and each  Subsidiary  are duly  qualified or<PAGE>


licensed  as a foreign corporation  or limited partnership  to do business,
and are in  good standing, in each jurisdiction where  the character of the
properties owned,  leased  or  operated by  them  or the  nature  of  their
business  makes such qualification or  licensing necessary, except for such
failures to  be so qualified  or licensed and  in good standing  that would
not, individually  or in the aggregate, have a Material Adverse Effect.  As
used  in  this Agreement,  the term  "Material  Adverse Effect"  means with
respect to any person, any change or effect that is or is reasonably likely
to be materially adverse to the financial condition, business or results of
operations of such person and  its subsidiaries, taken as  a whole.  As  of
the date hereof, a true and correct list of all Subsidiaries, together with
the jurisdiction of organization  of each Subsidiary and the  percentage of
the  outstanding capital stock or other equity interests of each Subsidiary
owned by  the Company and  each other Subsidiary,  is set forth  in Section
3.01 of  the Target  Disclosure Schedule.   Except as disclosed  in Section
3.01 of  the Target Disclosure  Schedule, the  Target does not  directly or
indirectly  own  any  equity  or  similar  interest  in,  or  any  interest
convertible into or exchangeable  or exercisable for any equity  or similar
interest in, any corporation, partnership, joint  venture or other business
association or entity.

          SECTION  3.02.   CERTIFICATE OF  INCORPORATION AND  BYLAWS.   The
Target  has heretofore furnished or  made available to  Acquiror a complete
and  correct copy  of  the  Certificate  of  Incorporation  and  Bylaws  or
equivalent organizational documents, each as amended to date, of the Target
and each Subsidiary.  Neither the Target nor any Subsidiary is in violation
of  any provision of its Certificate of Incorporation, Bylaws or equivalent
organizational documents.

          SECTION 3.03.   CAPITALIZATION.  The authorized capital  stock of
the  Target  consists  of 50,000,000  shares  of  Target  Common Stock  and
10,000,000 shares  of preferred  stock, $.01  par value  ("Target Preferred
Stock").   As of December 31,  1995 (a) 15,765,713 shares  of Target Common
Stock were issued and outstanding,  all of which are validly issued,  fully
paid and nonassessable  and not  subject to preemptive  rights, (b)  41,499
shares of Target Common Stock  were held in the  treasury of the Target  or
held by the Subsidiaries, and (c)  1,059,000 shares of Target Common  Stock
were issuable pursuant to outstanding Target  Options.  No shares of Target
Preferred Stock are  issued and outstanding,  and, except  as set forth  in
Section 3.01 of the Target Disclosure Schedule, no shares  of capital stock
of, or  other equity interests in,  the Target or any  Subsidiary have been
acquired by the Target or  any Subsidiary since December 31, 1995.   Except
as set  forth in Section 3.03 of the  Target Disclosure Schedule and in the
Target SEC Reports  (as herein defined), there are no  options, warrants or
other rights,  agreements, arrangements  or  commitments of  any  character
relating  to  the issued  or  unissued capital  stock  of, or  other equity
interests in,  the Target or  any Subsidiary obligating  the Target or  any
Subsidiary to issue or sell any shares of capital stock of, or other equity
interests in, the Target or any Subsidiary.  Between December  31, 1995 and
the date  of this  Agreement, no  shares of Target  Common Stock  have been
issued by  the Target, except pursuant to the exercise of the stock options
described above that were outstanding on December 31, 1995 in  each case in
accordance with  their respective terms.  All shares of Target Common Stock
subject to issuance as aforesaid, upon issuance on the terms and conditions
specified in the  instruments pursuant to which they are  issuable, will be
duly authorized, validly issued,  fully paid and nonassessable.   There are
no outstanding contractual obligations  of the Target or any  Subsidiary to<PAGE>


repurchase, redeem or otherwise  acquire any shares of Target  Common Stock
or any capital stock of, or any equity interest in, any Subsidiary.  Except
as  described in  Section  3.03 of  the  Target Disclosure  Schedule,  each
outstanding share of  capital stock of, or  other equity interest  in, each
Subsidiary is duly authorized, validly issued, fully paid and nonassessable
and each such share or  interest owned by the Target or  another Subsidiary
is  free and  clear  of all  security  interests, liens,  claims,  pledges,
options, rights of first  refusal, agreements, limitations on the  Target's
or such other Subsidiary's voting rights, charges and other encumbrances of
any nature whatsoever.

          SECTION  3.04.  AUTHORITY RELATIVE TO THIS AGREEMENT.  The Target
has all necessary corporate power and authority to execute and deliver this
Agreement and, with respect  to the Merger, upon the  approval and adoption
of  this Agreement  by the  Target's stockholders  in accordance  with this
Agreement and Delaware  Law, to  perform its obligations  hereunder and  to
consummate  the Transactions.  The execution and delivery of this Agreement
by the Target and the  consummation by the Target of the  Transactions have
been duly and  validly authorized by all necessary  corporate action and no
other corporate  proceedings on  the part  of the Target  are necessary  to
authorize this  Agreement or  to consummate the  Transactions (other  than,
with respect to the Merger, the approval and adoption of  this Agreement by
the holders of  a majority of the then outstanding  shares of Target Common
Stock  and  the filing  and recordation  of  an appropriate  Certificate of
Merger with the Secretary as required by Delaware Law).  This Agreement has
been duly and  validly executed and delivered  by the Target  and, assuming
the due authorization, execution and delivery of this Agreement by Acquiror
and Acquiror Sub, constitutes a legal, valid  and binding obligation of the
Target, enforceable against the Target in accordance with its terms.

          SECTION 3.05.  NO  CONFLICT; REQUIRED FILINGS AND CONSENTS.   (a)
The execution  and delivery of this Agreement by the Target do not, and the
performance of  this Agreement by the Target will not, subject to, (x) with
respect to the  Merger, obtaining  the requisite approval  and adoption  of
this  Agreement by  the  Target's  stockholders  in  accordance  with  this
Agreement  and Delaware  Law, and  (y) obtaining  the consents,  approvals,
authorizations  and  permits and  making the  filings described  in Section
3.05(b) and Section 3.05(b) of the Target Disclosure Schedule, (i) conflict
with  or violate  the Certificate  of  Incorporation, Bylaws  or equivalent
organizational documents  of the  Target or  any Subsidiary, (ii)  conflict
with or  violate any  domestic (federal, state  or local)  or foreign  law,
rule,  regulation,   order,  judgment  or   decree  (collectively,  "Laws")
applicable  to the  Target or any  Subsidiary or  by which  any property or
asset of the Target or any Subsidiary is bound or affected, or (iii) except
as specified  in Section  3.05(a)(iii) of  the Target  Disclosure Schedule,
result in  any breach of  or constitute a default  (or an event  which with
notice or lapse of time or  both would become a default) under, or  give to
others any  right of  termination,  unilateral  amendment, acceleration  or
cancellation of, or give to others any right to invalidate or terminate any
purchase  or  other right  to  acquire  property under,  or  result  in the
creation of  a lien or  other encumbrance on any  property or asset  of the
Target or any Subsidiary or require the consent of any third party pursuant
to, any  note,  bond,  mortgage,  indenture,  contract,  agreement,  lease,
license, permit, franchise or  other instrument or obligation to  which the
Target  or  any  Subsidiary is  a  party  or  by which  the  Target  or any
Subsidiary or  any property  or asset  of the Target  or any  Subsidiary is
bound  or  affected,  except  for  such  conflicts,  violations,  breaches,<PAGE>


defaults, rights, liens and consents which individually or in the aggregate
would not  reasonably be  expected  to have  a Material  Adverse Effect  on
Target.

          (b)  Except for notification  relating to environmental agencies,
the execution  and delivery of this Agreement by the Target do not, and the
performance of this Agreement by the Target will not,  require any consent,
approval,  authorization or permit of,  or filing with  or notification to,
any  governmental   or   regulatory   authority,   domestic,   foreign   or
supranational,  except (i) pursuant to the Securities Exchange Act of 1934,
as  amended (the"Exchange  Act"), the  Securities Act  of 1933,  as amended
(the"Securities Act"),  state  securities or  "blue  sky" laws  ("Blue  Sky
Laws"), the  Hart-Scott-Rodino  Antitrust  Improvements  Act  of  1976,  as
amended  (the  "HSR  Act"),  the  United  States  Maritime   Administration
("MARAD") and the rules and regulations promulgated  thereunder, and filing
and  recordation of an appropriate Certificate of Merger with the Secretary
as required  by Delaware Law, (ii)  as specified in Section  3.05(b) of the
Target Disclosure Schedule and (iii) where failure to obtain such consents,
approvals,  authorizations  or  permits,   or  to  make  such   filings  or
notifications,  would not prevent or  delay consummation of  the Merger, or
otherwise prevent the  Target from timely performing its  obligations under
this Agreement.

          SECTION 3.06.    PERMITS; COMPLIANCE.    Except as  disclosed  in
Section 3.06 of the Target Disclosure Schedule, each of the  Target and the
Subsidiaries is in  possession of all  franchises, grants,  authorizations,
licenses,    permits,    easements,   variances,    exceptions,   consents,
certificates,  approvals and orders of any United States (federal, state or
local) or foreign government, or governmental, regulatory or administrative
authority,  agency  or  commission  or  court  of  competent   jurisdiction
("Governmental Authority") necessary  for the Target  or any Subsidiary  to
own, lease and operate its  properties or to carry on its business as it is
now being  conducted, except for those  which the failure to  possess would
not individually  or  in the  aggregate reasonably  be expected  to have  a
Material Adverse Effect  on Target (the  "Target Permits") and,  as of  the
date hereof,  no suspension or cancellation of any of the Target Permits is
pending  or,  to  the  knowledge  of the  Target,  threatened.    Except as
disclosed  in Section 3.06 of  the Target Disclosure  Schedule, neither the
Target nor any Subsidiary is  in conflict with, or in default  or violation
of,  or, with the  giving of  notice or  the passage of  time, would  be in
conflict with, or in default or violation of, (i) any Law applicable to the
Target or any Subsidiary or by which any property or asset of the Target or
any Subsidiary is bound or affected, or (ii) any of the Target Permits.

          SECTION  3.07.   SEC  FILINGS; FINANCIAL  STATEMENTS.   (a)   The
Target  has filed all forms, reports and  documents required to be filed by
it  with the Securities and Exchange  Commission (collectively, the "Target
SEC Reports").   The Target SEC  Reports (i) were prepared  in all material
respects in accordance with the requirements  of the Securities Act and the
Exchange Act, as the case may  be, and the rules and regulations thereunder
and (ii) did  not, at the  time they were filed  (or at the  effective date
thereof  in  the  case  of  registration  statements),  contain  any untrue
statement of a material fact or  omit to state a material fact required  to
be  stated  therein  or necessary  in  order  to make  the  statements made
therein, in the light of the circumstances under which they  were made, not
misleading.  No Subsidiary is  currently required to file any form,  report
or other document with the Securities and Exchange Commission ("SEC").<PAGE>


          (b)  Each of  the financial statements (including,  in each case,
any  notes thereto)  contained in the  Target SEC  Reports was  prepared in
accordance  with  United States  generally  accepted  accounting principles
applied  on  a  consistent  basis  ("U.S.  GAAP")  throughout  the  periods
indicated (except as may be indicated  in the notes thereto and except that
financial  statements included with quarterly  reports on Form  10-Q do not
contain  all U.S. GAAP notes to  such financial statements) and each fairly
presented  in all  material  respects the  financial  position, results  of
operations and changes in stockholders' equity and cash flows of the Target
as at the respective dates thereof and for the respective periods indicated
therein  (subject, in  the  case of  unaudited  statements, to  normal  and
recurring year-end  adjustments  which  were  not  and  are  not  expected,
individually or in the aggregate, to have a Material Adverse Effect).

          (c)  Except (i) to the extent set  forth on the balance sheet  of
the  Target  and the  consolidated Subsidiaries  as  at December  31, 1995,
including the notes thereto  (the "1995 Balance Sheet"), (ii) as  set forth
in Section 3.07(c) of the Target Disclosure Schedule or  (iii) as disclosed
in any  SEC Report filed by the Target after December 31, 1995, neither the
Target  nor any  Subsidiary has any  liability or obligation  of any nature
(whether  accrued,  absolute,  contingent  or  otherwise)  which  would  be
required  to be  reflected on  a balance  sheet, or  in the  notes thereto,
prepared  in  accordance  with  U.S.   GAAP,  except  for  liabilities  and
obligations  incurred in the  ordinary course  of business  consistent with
past  practice since December 31, 1995, which would not, individually or in
the aggregate, reasonably  be expected to have a Material Adverse Effect on
Target.

          (d)  The Target has heretofore furnished to Acquiror complete and
correct copies of  all amendments and modifications (if  any) that have not
been  filed by  the Target with  the SEC  to all  agreements, documents and
other instruments that previously  had been filed by the Target as exhibits
to the Target SEC Reports and are currently in effect.

          SECTION  3.08.   ABSENCE  OF CERTAIN  CHANGES  OR EVENTS.   Since
December 31, 1995,  except as  contemplated by, or  disclosed pursuant  to,
this Agreement including Section 3.08 of the Target Disclosure Schedule, or
disclosed in any Target SEC Report  filed since December 31, 1995 and prior
to the date of this Agreement, each of the Target and  the Subsidiaries has
conducted its  business  only  in  the ordinary  course  and  in  a  manner
consistent with past  practice and, since December 31,  1995, there has not
been (a)  any amendment or other change to the Certificate of Incorporation
or Bylaws or other  equivalent organizational documents of  the  Target  or
any  Subsidiary,  (b)   any  issuance,  sale,   pledge,  disposal,   grant,
encumbrance, or  authorization of the issuance,  sale, pledge, disposition,
grant or encumbrance by  the Target or any Subsidiary of  (i) any shares of
their capital stock  of any  class, or any  options, warrants,  convertible
securities  or  other rights  of any  kind to  acquire  any shares  of such
capital  stock,  or  any  other  ownership  interest  (including,   without
limitation,  any phantom interest), of the Target or any Subsidiary (except
for the  issuance of shares  of capital stock  issuable pursuant  to Target
Options outstanding on January 25, 1996), or (ii) any of their assets other
than in  the ordinary course of business consistent with past practice, (c)
any declaration, setting aside, making or payment of  any dividend or other
distribution, payable in cash,  stock, property or otherwise,  with respect
to any  of their capital  stock by the  Target or  any Subsidiary, (d)  any
reclassification, combination,  split  or division  by  the Target  or  any<PAGE>


Subsidiary of any of their  capital stock or redemption, purchase or  other
acquisition,  directly  or indirectly,  of any  of  their capital  stock or
securities or  obligations convertible into or  exchangeable or exercisable
for  such capital stock, (e) any commitment  or incurrence by the Target or
any Subsidiary  of any capital expenditure  in excess of $500,000,  (f) any
mobilization  of,  or any  agreement  entered  into by  the  Target  or any
Subsidiary which would provide for the mobilization of, any drilling rig to
any area of the  world other than such area in which  such drilling rig was
located on  December 31, 1995,   (g) any drilling contract  entered into by
the  Target or any Subsidiary with  a rate fixed for a  period in excess of
six months,  (h) any incurrence of  any indebtedness for borrowed  money or
issuance of any debt securities or assumption, guarantee or endorsement, or
otherwise becoming responsible  as an accommodation, for the obligations of
any person,  or making  of any  loans or advances,  (i) acquisition  by the
Target  or  any  Subsidiary  (including,  without  limitation,  by  merger,
consolidation or  acquisition of stock  or assets)  of any interest  in any
corporation,  partnership,  other  business  organization or  any  division
thereof or any assets, other than the acquisition of assets in the ordinary
course  of  business consistent  with past  practice,  (j) any  contract or
agreement (other than those covered by subparagraph (g) above) entered into
or amended by the  Target or any Subsidiary  material to their  businesses,
results of  operations or  financial condition,   (k)  any increase  in the
compensation payable or to become payable to any director, officer or other
employee, or consultant  or advisor, of  the Target or  any Subsidiary,  or
grant of any bonus to,  or grant of any severance or termination pay to, or
any employment  or severance  agreement entered  into  with, any  director,
officer or other  employee, or consultant or advisor,  of the Target or any
Subsidiary or any collective bargaining agreement  entered into or amended,
(l)  any  bonus,  profit  sharing,  thrift,  compensation,  stock   option,
restricted stock, pension, retirement, deferred compensation or other plan,
trust or fund established, adopted, entered into or amended for the benefit
of  any director,  officer  or class  of  employees of  the  Target or  any
Subsidiary,  (m)  any  settlement  or  compromise  by  the  Target  or  any
Subsidiary of  any pending or threatened litigation  which would reasonably
be expected to have a Material Adverse Effect on Target or which relates to
the  Transactions,   (n) any  event or  events (whether  or not  covered by
insurance), individually or  in the  aggregate, having  a Material  Adverse
Effect, or (o) any change by the Target or any Subsidiary in its accounting
methods, principles or practices.

          SECTION 3.09.  ABSENCE OF LITIGATION.  Section 3.09 of the Target
Disclosure Schedule sets forth each instance in which any of the Target and
the Subsidiaries (i)  is subject to  any outstanding injunction,  judgment,
order, decree, ruling, or charge or (ii) is a party or, to the knowledge of
the Target  and the Subsidiaries, is  threatened to be made a  party to any
action, suit, proceeding, hearing,  or investigation of, in, or  before any
court or  quasi-judicial or administrative  agency of  any federal,  state,
local,  or foreign  jurisdiction or  before any  arbitrator, which  has not
otherwise  been disclosed  in  the  Target  SEC  Reports  and  which  would
reasonably be expected to have a Material Adverse Effect on Target. Neither
the Target nor  any Subsidiary nor any  property or asset of  the Target or
any  Subsidiary is in violation  of any order,  writ, judgment, injunction,
decree, determination or award.  

          SECTION 3.10.  EMPLOYEE BENEFIT MATTERS.  (a)     Set   forth  in
Section 3.10(a) of the Target  Disclosure Schedule is a true, complete  and
correct list of (i) all "employee benefit plans" as defined in Section 3(3)<PAGE>


of  the Employee  Retirement  Income  Security  Act  of  1974,  as  amended
("ERISA"), whether or not subject to ERISA, and any other  employee profit-
sharing,  bonus,  incentive  or  deferred compensation,  welfare,  pension,
retirement, termination, retention, change of control, stock option,  stock
appreciation,   stock  purchase,  phantom   stock  or  other  equity-based,
performance, group  insurance  or  other  employee  benefit  plan,  retiree
benefit  or compensation  plan,  program, arrangement,  agreement,  policy,
practice or understanding, whether  written or unwritten, that provides  or
may provide benefits or compensation with respect to any employee or former
employee  employed or formerly employed by the Target, or the beneficiaries
or dependents of any such employee  or former employee, or to any director,
officer,  stockholder or consultant  of the Target or  under which any such
individual is or  may become eligible  to participate or  derive a  benefit
(excluding social security, Medicare, Medicaid, national health care or any
similar or  analogous program  or plan sponsored  by a foreign  or domestic
governmental   entity)  and  either  (A)  is  or  has  been  maintained  or
established by  the Target or any  other trade or business,  whether or not
incorporated, which,  together with the Target is or would have been at any
date of determination occurring within the preceding six years treated as a
single employer  under Section  414 of  the Code or  Section 4001(b)(1)  of
ERISA  (such  other  trades  and  businesses  collectively,  the   "Related
Persons"), or (B) to which the Target or any Related  Person contributes or
is or  has been  obligated or  required to contribute  or, to  the Target's
knowledge, with  respect to which the Target or any Related Person may have
any  liability  or obligation  (collectively,  the "Plans")  which  are not
disclosed  in the  Target SEC  Reports and  (ii) all written  contracts and
agreements  relating to employment and all severance agreements with any of
the  directors, officers  or employees  of the  Target or  the Subsidiaries
(other  than,  in  each  case,  any  such  contract  or agreement  that  is
terminable by the Target or any Subsidiary at will without penalty or other
adverse consequence)  (the "Target  Employment  Contracts") which  are  not
disclosed  in the  Target SEC  Reports.   Except  as set  forth in  Section
3.10(a) of  the Target Disclosure Schedule  and the Target SEC  Reports and
except for  any liabilities arising out of any defects  that are or will be
the  subject of the procedures or submissions described in Section 6.13(a),
6.13(m) and  6.13(n),  to  the knowledge  of  the Target  and  the  Related
Persons, there are no  material liabilities, including fines  and penalties
of the Target or any Subsidiary, with respect to any plans, arrangements or
practices  of  the  type described  in  the  preceding  sentence that  were
terminated  or discontinued  prior  to  the  date  of  this  Agreement  and
previously  maintained or  contributed  to by  the  Target or  any  Related
Person, or  to which the  Target or  any Related Person  previously had  an
obligation to contribute.

     (b)  Section 3.10(b) of the Target  Disclosure Schedule sets forth the
name of each officer  or employee of the Target or  any of the Subsidiaries
with  a  current annual  base compensation  greater  than $100,000  and the
annual base compensation applicable to each such officer or employee.

     (c)  The Target  previously has  delivered  to Acquiror  complete  and
correct  copies of  each  of the  Plans  and Target  Employment  Contracts,
including  all  amendments  thereto,  and  any  other  documents  or  other
instruments applying  and relating thereto that are reasonably requested by
Acquiror,  including  descriptions  of  all  unwritten  Plans;  all   trust
agreements, insurance contracts  or other funding  arrangements; the  three
most  recent actuarial  and trust  reports; the  three most  recently filed
Forms  5500 and all schedules thereto; the most recent determination letter<PAGE>


from the Internal Revenue  Service ("IRS"); any documents submitted  to the
IRS concerning  a  pending  request  for a  determination  letter;  current
summary  plan descriptions;  all material  communications received  from or
sent to the IRS, the Pension  Benefit Guaranty Corporation ("PBGC") or  the
Department of  Labor during the  three-year period preceding  the Effective
Time (including a written description of any oral communication) that could
reasonably be expected to result in material liability or obligation on the
part of  the  Target or  any  Subsidiary or  disqualification  of any  Plan
intended  to  be  qualified  under Section  401(a)  of  the  Code; and  all
amendments and modifications to any such document.

     (d)  Except as set forth  in Section 3.10(d) of the  Target Disclosure
Schedule, (i)  each of the Plans and  Target Employment Contracts is being,
and  has  been,  maintained,  operated and  administered  in  all  material
respects in accordance  with its respective terms,  (ii) each of  the Plans
and  Target   Employment  Contracts  has  been   maintained,  operated  and
administered  in all  material respects  in compliance with  all applicable
laws, including but  not limited  to the Age  Discrimination in  Employment
Act,  as amended, Title X of the Consolidated Omnibus Budget Reconciliation
Act  of  1986, as  amended,  ERISA  and the  Code,  and  (iii) no  material
liability  or obligation  has  been incurred  (and  is unsatisfied)  or  is
expected to be incurred by the Target or any Subsidiary (either directly or
indirectly, including  as a  result of  an indemnification  obligation, but
excluding the penalties  that are or  will be payable  pursuant to  Section
6.13(a),  (m) and (n)) under  or pursuant to  any applicable law, including
Titles I and IV of ERISA  and the penalty, excise tax or joint  and several
liability provisions of the Code relating to employee benefit plans.

     (e)  The  Target and the Related Persons  have not within the past six
years had an obligation to contribute to a qualified "defined benefit plan"
as defined in Section  3(35) of ERISA and covered  by Part 3 of Title  I of
ERISA,  a pension plan subject to the  minimum funding standards of Section
302 of  ERISA or  Section 412  of the  Code, or  a "multiemployer  plan" as
defined in  Section 3(37) of and covered by ERISA  or Section 414(f) of the
Code or a "multiple employer plan"  within the meaning of Section 210(a) of
and covered by ERISA or Section 413(c) of the Code.  Except as set forth in
Section 3.10(e) of Target  Disclosure Schedule, no other trade  or business
is, or, at any  time within the past six years,  has been treated, together
with the Target and the Related Persons, as a single employer under Section
414 of the Code or Section 4001 of ERISA.

     (f)  Except  with respect  to those defects  which are or  will be the
subject  of the  procedures and submissions  described in  Section 6.13(a),
each Plan  intended to be qualified  under Section 401(a) of  the Code, and
the trust  (if  any) forming  a  part  thereof, has  received  a  favorable
determination letter from  the IRS as  to its qualification under  the Code
and  to the  effect that  each  such trust  is exempt  from taxation  under
Section  501(a) of  the  Code or  an  application for  determination  under
Section  401(a) of the  Code has  been submitted  to the  IRS prior  to the
expiration of  the applicable  remedial  amendment period,  all  amendments
necessary to maintain qualification of each such Plan have been made within
the  time allowed by the Code and ERISA and, to the knowledge of the Target
and  all Related  Persons, no event  has occurred or  condition exists that
could adversely  affect  such  determination  or  pending  application  for
determination  of   qualification  or  tax-exempt  status,   including  any
compliance problems resulting from failures to follow the terms of the plan
documents for any Plan, and  no such determination has been revoked  and no<PAGE>


application  for determination  has  been denied,  nor  has any  Plan  been
amended  since  the  date  of  its  most  recent  determination  letter  or
application therefor  in  any  respect  that  would  adversely  affect  its
qualification or materially increase its costs.

     (g)  Except as set forth  in Section 3.10(g) of the  Target Disclosure
Schedule, to  the knowledge of  the Target and  all Related  Persons, there
have been no prohibited transactions as  defined in Section 406 of ERISA or
Section 4975  of the  Code or  breaches of  any of  the  duties imposed  on
"fiduciaries" (within the meaning  of Section 3(21) of ERISA) by ERISA with
respect to  the Plans  that could  result in the  Target or  any Subsidiary
becoming liable directly  or indirectly (by  indemnification or  otherwise)
for any  material liability for any excise  tax, penalty or other liability
under ERISA or the Code.

     (h)  Except as set forth  in Section 3.10(h) of the  Target Disclosure
Schedule and except with respect to liabilities  arising out of any defects
that are  or will be the subject of the procedures or submissions described
in  Section  6.13(a), 6.13(m)  and 6.13(n),  there  are no  actions, suits,
arbitrations or  claims (other than  routine claims for  benefits), pending
or, to  the knowledge of the Target or any Related Person, threatened, with
respect to any  Plan or Target  Employment Contract, any  trust which is  a
part of any  Plan or  Target Employment Contract,  any trustee,  fiduciary,
custodian, administrator or other person  holding or controlling assets  of
any Plan or Target Employment Contract, and, to the knowledge of the Target
and  all Related  Persons, no  basis to  anticipate any such  action, suit,
arbitration or claim exists  (other than routine claims for  benefits), and
there are no  investigations or  audits of  any Plan  or Target  Employment
Contract by  any governmental authority  currently pending  and there  have
been  no  such  investigations or  audits  that  have  been concluded  that
resulted in any liability of the Target or any Related  Person that has not
been fully discharged.  Except with respect to the procedure and submission
described in Section  6.13(a) hereof, no closing agreement with  the IRS is
being, or has  been, negotiated with respect to  any Plan, and no  Plan has
been submitted to the  IRS pursuant to the Voluntary  Compliance Resolution
Program as described in Revenue Procedures 92-89 and 93-36.

     (i)  Except as  set forth in Section  3.10(i), there are no  unpaid or
overdue (i) insurance  premiums required to be  paid with respect to,  (ii)
benefits,  expenses, and  other amounts  due and  payable under,  and (iii)
contributions, transfers or payments  required to be  made to, any Plan  or
Target  Employment Contract  have been made  on or before  their due dates.
With respect to any  insurance policy providing funding for  benefits under
any Plan or  Target Employment Contract (i) there is  no material liability
of  the Target  or any  Related Person  in the nature  of a  retroactive or
retrospective rate adjustment, loss sharing arrangement, or other actual or
contingent  liability,  nor  would there  be  any  such  liability if  such
insurance policy was terminated on  the date hereof except as set  forth in
Section  3.10(i) of  the  Target  Disclosure  Schedule,  and  (ii)  to  the
knowledge  of  the Target  and all  Related  Persons, no  insurance company
issuing any such policy is in receivership, conservatorship, liquidation or
similar proceeding and no such proceedings with respect to any insurer  are
imminent.

     (j)  With respect to  any Plan  that is an  "employee welfare  benefit
plan" as defined  in Section 3(1) of ERISA, except  as disclosed in Section
3.10(j) of the Target Disclosure Schedule,  (i) no such Plan is unfunded or<PAGE>


funded through a "welfare benefit fund", as such term is defined in Section
419(e) of the  Code, (ii) to  the knowledge of the  Target and all  Related
Persons, each such  Plan that  is a "group  health plan",  as such term  is
defined in Section 5000(b)(1) of the Code, is in compliance in all material
respects  with the applicable requirements of Section 4980B(f) of the Code,
and (iii) to the knowledge of the Target and all Related Persons, each such
Plan (including any such Plan covering retirees or former employees) may be
amended  or   terminated  subject  to  the  provisions  of  any  applicable
collective bargaining  agreement, without material liability  to the Target
and the Subsidiaries.

     (k)  Section 3.10(k)  of the  Target  Disclosure Schedule  contains  a
separate  identification of each Plan  and Target Employment Contract other
than those set forth  in Section 3.10(l) of the  Target Disclosure Schedule
that  provides benefits,  including, without  limitation, death  or medical
benefits,  beyond termination  of employment or  retirement other  than (i)
coverage  mandated  by law,  (ii) death  or  retirement benefits  under any
qualified Plan, (iii) deferred compensation benefits fully reflected on the
1995 Balance Sheet or (iv) benefits, the full cost of which is borne by the
employee (or the employee's  beneficiary) (the "Post-Employment Benefits");
such  balance sheets  accurately reflect  the  liabilities relating  to the
Post-Employment Benefits  and an  actuarial  study of  the  Post-Employment
Benefits has been delivered to Acquiror.

     (l)  Except as set forth  in Section 3.10(l) of the  Target Disclosure
Schedule, the  execution, delivery and  performance of this  Agreement will
not, solely in and of  itself and without regard to any  subsequent events,
(i) constitute an event  under any Plan or Target Employment  Contract that
will result in any payment (whether of severance pay or otherwise) becoming
due from the Target or any Related Person to any present or former officer,
employee,  director,  stockholder  or  consultant   (or  dependents),  (ii)
accelerate  the  time of  payment or  vesting,  or increase  the  amount of
compensation due  to  any present  or former  officer, employee,  director,
stockholder  or consultant of  the Target or  any Related  Person, or (iii)
constitute a "deemed severance"  or "deemed termination" under any  Plan or
Target Employment Contract or under any applicable law.

     (m)  Neither the Target nor  any Related Person has any  obligation in
connection with any Plan  pursuant to the terms of a  collective bargaining
agreement.

     (n)  The  Target and  all Related Persons  have made or  will make all
contributions  required under GAAP to be made  by the Target or any Related
Person  under  each Plan  and Target  Employment  Contract for  all periods
through and including the Effective Time or adequate accruals therefor have
been or will be provided.

     (o)  Except as  otherwise provided  in Section 3.10(o)  of the  Target
Disclosure  Schedule and except with respect to the submissions and filings
contemplated by Section  6.13(a), 6.13(m) and 6.13(n)  hereof, all returns,
reports and  filings required by  any governmental agency or  which must be
furnished to  any person  with  respect to  each of  the  Plans and  Target
Employment Contracts have been timely  filed or furnished.  The  Target and
all  Subsidiaries shall cooperate in full with Acquiror with any reasonably
necessary  action  to  ensure compliance  with  any  federal  or state  law
applicable  to the  Plans  and Target  Employment  Contracts, whether  such
action occurs prior to, on, or after the Effective Time.<PAGE>


     (p)  Except as set forth  in Section 3.10(p) of the  Target Disclosure
Schedule  and except  as provided in  Section 6.13(a),  the Target  and the
Related Persons have not agreed or committed (orally or in writing) to make
any  amendments to  any  Plan or  Target  Employment Contract  not  already
embodied  in  the documents  comprising  the  Plans and  Target  Employment
Contracts, other than  any amendments required by  law, or to establish  or
implement   any  other   employee  or   retiree  benefit   or  compensation
arrangement.

     (q)  To  the knowledge of Target  and all Related  Persons, the Target
and  the Subsidiaries  have  not incurred  any  liability under,  and  have
complied   in  all   respects  with,   the  Worker   Adjustment  Retraining
Notification  Act and, to the knowledge of  Target, no fact or event exists
that could  give  rise  to  liability  under  such  act,  except  for  such
occurrences, noncompliances  and liabilities as would  not, individually or
in the aggregate, have a Material Adverse Effect.

          SECTION  3.11.    LABOR MATTERS.    Neither  the  Target nor  any
Subsidiary is a party to any collective bargaining agreement or other labor
union  contract applicable  to  persons  employed  by  the  Target  or  any
Subsidiary.

          SECTION   3.12.     INTELLECTUAL  PROPERTY.     Target   and  the
Subsidiaries own or have valid, binding and enforceable rights to  use each
patent, invention, industrial model, process, design and all  registrations
and applications for  any of the foregoing  used, employed or  exploited in
the business  of the Target  or any  Subsidiary without any  known conflict
with the rights of others.

          SECTION  3.13.    TAXES.    (a)  The  Target  and  each  of   the
Subsidiaries  have  (i) filed  all federal,  state,  local and  foreign tax
returns required  to be filed by  them prior to the date  of this Agreement
(taking into  account extensions)  and all  of such  returns were  true and
correct  in all  material  respects  when  filed  and  in  compliance  with
applicable  law, (ii) paid  or accrued all  taxes shown  to be due  on such
returns and paid all applicable ad valorem and value added taxes as are due
and (iii) paid  or accrued all  taxes for which  a notice of  assessment or
collection  has been received (other  than amounts being  contested in good
faith by appropriate proceedings),  except in the case of clause  (i), (ii)
or  (iii) for  any  such filings,  payments  or accruals  which would  not,
individually or in  the aggregate, have a Material  Adverse Effect.  Except
as set  forth in Section 3.13(a) of the Target Disclosure Schedule, neither
the Internal Revenue Service nor any other federal, state, local or foreign
taxing authority has asserted any claim for taxes, or to the best knowledge
of the Target, is threatening to assert any claims for taxes, which claims,
individually or in  the aggregate,  could have a  Material Adverse  Effect.
The Target has open years for federal, state and foreign income tax returns
only as  set forth  in Section 3.13(a)  of the Target  Disclosure Schedule.
The Target and each Subsidiary have withheld or collected and  paid over to
the appropriate governmental authorities (or  are properly holding for such
payment) all  taxes required by law to be withheld or collected, except for
amounts which would not, individually or in the aggregate, have a  Material
Adverse Effect.  Neither the Target nor any Subsidiary has made an election
under Section 341(f) of the  Code.  There are  no liens for taxes upon  the
assets of the Target or any Subsidiary (other than liens for taxes that are
not  yet due  or that  are  being contested  in good  faith by  appropriate
proceedings),  except for  liens which  would not,  individually or  in the<PAGE>


aggregate, have a Material Adverse Effect.  Target and each Subsidiary have
complied  with  all federal,  state,  local and  foreign  tax  laws in  all
material  respects.  Except as  disclosed in Section  3.13(a) of the Target
Disclosure Schedule, neither the Target nor any Subsidiary (i) has executed
any waiver to  extend the time for assessment of  any federal, state, local
or foreign tax, or (ii)  filed, or has pending, any request  or application
for ruling, whether federal, state, local or foreign.  

          (b)  Neither the Target nor any Subsidiary has taken or agreed to
take  any  action  that  would  prevent  the  Merger  from  constituting  a
reorganization qualifying  under the provisions  of Section  368(a) of  the
Code.

          (c)  The 1995 Balance Sheet includes appropriate reserves for all
federal, state, local and  foreign taxes and other liabilities  incurred as
of such date but not yet payable.

          (d)  The net  operating losses and other  carryovers available to
the  Target and  each Subsidiary  as of  the date  hereof are  described in
Section 3.13  of the Target Disclosure  Schedule and as of  the date hereof
the ability of Target and  each Subsidiary to use such carryovers  will not
have  been affected  by Section  382, 383  or  384 of  the Code  or by  the
separate return limitation year or  consolidated return change of ownership
limitations of Treas. Regs. Section 1.1502-21 or 1.1502.22.

          (e)  Neither  Target or any Subsidiary  is a U.  S. real property
holding company under Section 897 of the Code.

          SECTION 3.14.  ENVIRONMENTAL MATTERS.  (a)  For  purposes of this
Agreement,  the following  terms shall  have the  following meanings:   (i)
"Hazardous  Substances" means (A) those  substances defined in or regulated
under  the following federal statutes and their state counterparts, as each
may be  amended from time  to time,  and all regulations  thereunder:   the
Hazardous  Materials  Transportation  Act, the  Resource  Conservation  and
Recovery Act,  the Comprehensive Environmental  Response, Compensation  and
Liability Act, the Clean Water Act, the Safe Drinking Water Act, the Atomic
Energy Act, the  Federal Insecticide, Fungicide,  and Rodenticide Act,  the
Toxic  Substances Control  Act and  the Clean  Air Act;  (B) petroleum  and
petroleum products,  byproducts and breakdown products  including crude oil
and any fractions thereof; (C) natural gas, synthetic gas, and any mixtures
thereof; (D) polychlorinated biphenyls; (E) any other chemicals,  materials
or substances  defined or regulated as toxic or hazardous or as a pollutant
or contaminant or as  a waste under any  applicable Environmental Law;  and
(F) any  substance with respect to  which a federal, state  or local agency
requires environmental investigation, monitoring, reporting or remediation;
and (ii) "Environmental Laws"  means any federal, state, foreign,  or local
law, rule or regulation, now or hereafter in effect and as amended, and any
judicial or  administrative interpretation thereof, including  any judicial
or administrative order,  consent decree or judgment, relating to pollution
or  protection of  the environment,  health, safety  or natural  resources,
including without limitation, those relating to (A)  releases or threatened
releases  of  Hazardous   Substances  or  materials  containing   Hazardous
Substances  or (B)  the manufacture,  handling, transport,  use, treatment,
storage  or  disposal  of  Hazardous  Substances  or  materials  containing
Hazardous Substances.<PAGE>


          (b)  Except as described in Section 3.14 of the Target Disclosure
Schedule or as would not  individually or in the aggregate result  in or be
likely to result in any fine, tax, assessment, penalty, loss, cost, damage,
liability,  expense or other payment related thereto in excess of $250,000:
(i) the Target and each Subsidiary are and have been in compliance with all
applicable  Environmental Laws; (ii)  the Target  and each  Subsidiary have
obtained all permits, approvals, identification numbers, licenses or  other
authorizations   required   under   any   applicable   Environmental   Laws
("Environmental  Permits") and are and  have been in  compliance with their
requirements; (iii)  such Environmental  Permits  are transferable  to  the
Surviving Corporation pursuant  to the  Merger without the  consent of  any
Governmental Authority;  (iv)  there  are  no  underground  or  aboveground
storage tanks or  any surface  impoundments, septic tanks,  pits, sumps  or
lagoons  in  which Hazardous  Substances are  being  or have  been treated,
stored or disposed of  on any owned or leased real property  or on any real
property   formerly  owned,  leased  or  occupied  by  the  Target  or  any
Subsidiary; (v) there is, to the  best knowledge of the Target, no asbestos
or asbestos-containing material  on any  owned or leased  real property  in
violation  of  applicable  Environmental  Laws;  (vi) the  Target  and  the
Subsidiaries  have  not  released,  discharged  or  disposed  of  Hazardous
Substances  on any owned  or leased real  property or on  any real property
formerly owned,  leased or occupied by  the Target or any  Subsidiary in an
amount requiring remediation and none of such property is contaminated with
any  Hazardous Substances in  an amount requiring  remediation; (vii) other
than  routine operational  matters  neither  the  Target  nor  any  of  the
Subsidiaries  is undertaking,  and  neither  the  Target  nor  any  of  the
Subsidiaries has completed, any investigation  or assessment or remedial or
response action relating to  any such release, discharge or disposal  of or
contamination with Hazardous Substances at any site, location or operation,
either voluntarily or pursuant  to the order of any  Governmental Authority
or the requirements of any  Environmental Law; (viii) there are  no pending
or, to the knowledge of Target, past or threatened actions, suits, demands,
demand letters,  claims, liens,  notices  of non-compliance  or  violation,
notices of  liability or potential liability,  investigations, proceedings,
consent orders or consent  agreements relating in any way  to Environmental
Laws, any Environmental Permits or any Hazardous Substances ("Environmental
Claims") against the Target or any Subsidiary or any of their property, and
there are  no circumstances  that can  reasonably be  expected to  form the
basis  of any such  Environmental Claim, including  without limitation with
respect to any off-site disposal location presently or formerly used by the
Target  or any  Subsidiaries or  any  of their  predecessors; and  (ix) the
Target and each Subsidiary  have satisfied and are currently  in compliance
with  all   financial  responsibility  requirements  applicable   to  their
operations  and  imposed by  the U.S.  Coast  Guard or  Minerals Management
Service pursuant  to the Oil Pollution  Act of 1990, as amended,  or by any
other governmental authority  under any  other Environmental  Law, and  the
Target and the Subsidiaries  have not received any notice  of noncompliance
with any such financial responsibility requirements.

          (c)  The Target and  the Subsidiaries have  provided Acquiror  or
Acquiror  Sub with copies of any environmental reports, studies or analyses
in its possession  or under its  control relating to  owned or leased  real
property or the operations of the Target or the Subsidiaries.

          SECTION  3.15.   OPINION OF  FINANCIAL ADVISOR.   The  Target has
received the  written opinion of  Simmons & Company  International ("Target
Banker") on the date of this Agreement to the effect that the consideration<PAGE>


to be paid by Acquiror in the Merger is fair from a financial point of view
to the Target's stockholders as of the date thereof.  A  copy of the Target
Banker engagement  letter,  dated October  17,  1995, has  previously  been
delivered to Acquiror.

          SECTION  3.16.   VOTE  REQUIRED.   The  affirmative vote  of  the
holders of a majority of the then outstanding shares of Target Common Stock
is the only vote of the holders of any class or series of capital  stock of
the Target necessary to approve the Merger.

          SECTION 3.17.  BROKERS.   No broker, finder or  investment banker
(other than Target Banker) is entitled to any  brokerage, finder's or other
fee   or  commission  in  connection   with  the  Transactions  based  upon
arrangements  made by or on  behalf of the  Target or any  Subsidiary.  The
Target  has  heretofore  furnished  to  Acquiror  a  correct  copy  of  all
agreements between the Target and Target Banker pursuant to which such firm
would be entitled  to any payment relating to the  Transactions.  The total
fee  due to  Target  Banker as  a  result  of the  Transactions,  including
expenses, shall not exceed $3,000,000.

          SECTION   3.18.    TANGIBLE   PROPERTY.    The   Target  and  its
Subsidiaries  have good  and  marketable title  to,  or a  valid  leasehold
interest in, the properties and  assets used by them  or shown on the  1995
Balance Sheet  or acquired after the date  thereof, other than all drilling
rigs owned, leased, chartered or managed by the Target or any Subsidiary on
the date  hereof (the "Target  Drilling Rigs"), are  free and clear  of any
mortgage, pledge, lien,  encumbrance, charge, or  other security  interest,
other  than (a) mechanic's, materialmen's, and similar liens, (b) liens for
taxes not yet due and payable or for taxes that the taxpayer is  contesting
in good faith through appropriate proceedings, (c) purchase money liens and
liens securing rental  payments under capital  lease arrangements, and  (d)
liens  and encumbrances identified and reflected on the 1995 Balance Sheet,
except for  properties and  assets disposed  of in  the ordinary  course of
business. 

          SECTION  3.19.    BAREBOAT  CHARTER.   Target  has  exercised  in
accordance with the  terms of that certain Bareboat Charter dated March 15,
1991  between Balboa Marine Limited Partnership and Dual Offshore, Ltd., as
amended, its  option for the First Option Term (as defined therein) and the
First  Option Term  shall  expire on  September 4,  1996.   Neither Mosvold
Shipping AS nor Dual Invest AS nor any of either of their affiliates (other
than  Target and  the  Subsidiaries)  has  any  right,  title  or  interest
(including  profits interest) in or  with respect to  such bareboat charter
agreement.

          SECTION  3.20.  MATERIAL CONTRACTS.   Section 3.20  of the Target
Disclosure  Schedule lists each contract which (i) is required by its terms
or is currently expected  to result in the payment or receipt by the Target
or any Subsidiary of more than $500,000 and which  is not terminable by the
Target  without the payment of  any penalty or fine on  not more than three
months' notice, or (ii) contains any terms or provisions which restrict, or
would restrict if  terminated, the ability of the  Target or any Subsidiary
from the operation, charter, leasing or operation of offshore drilling rigs
in  any  geographic  area  of  the  world  without  the  consent  or  joint
participation of, or  payment of any  kind to, a  third party (a  "Material
Contract") to  which the Target  or any Subsidiary  is a party,  other than
contracts which  have been filed as an exhibit to or have been incorporated<PAGE>


by reference in any Target SEC  Report.  Each Material Contract is in  full
force and effect  and, to the  knowledge of Target, is  enforceable against
the parties  thereto (other  than the  Target  or any  such Subsidiary)  in
accordance  with its terms and no condition  or state of facts exists that,
with notice or the passage of time, or both, would  constitute a default by
the Target or any Subsidiary  or, to the best knowledge of the  Target, any
third party under such  Material Contracts, except for such  defaults which
individually or in the aggregate would not reasonably be expected to have a
Material Adverse Effect on Target.  The Target or the applicable Subsidiary
has duly  complied in  all material  respects with  the provisions of  each
Material Contract to which it is a party.

          SECTION 3.21.    PARACHUTE  PAYMENTS.   Except  as  disclosed  in
Section  3.21 of the Target Disclosure Schedule, neither the Target nor any
Subsidiary has entered into any agreement  that would result in the  making
of "parachute payments,"  as defined in  Section 280G of  the Code, to  any
person and none of such agreements requires the Target or any Subsidiary to
gross-up  or otherwise pay the amount  of any taxes due  in respect of such
 parachute payments. 

          SECTION 3.22.   CERTAIN BUSINESS  PRACTICES.  As  of the date  of
this  Agreement, neither the Target  nor any Subsidiary,  nor any director,
officer, or, to the knowledge of  the Target, any agent or employee  of the
Target or any Subsidiary has (i) used any funds for unlawful contributions,
gifts,  entertainment  or other  unlawful  expenses  relating to  political
activity,  (ii) made any unlawful payment to foreign or domestic government
officials  or  employees or  to foreign  or  domestic political  parties or
campaigns or violated any provision of the Foreign Corrupt Practices Act of
1977,  as amended, (iii) made any  other unlawful payment, or (iv) violated
any of the provisions of Section 999 of the Code or Section 8 of the Export
Administration Act, as amended.

          SECTION 3.23  REAL PROPERTY AND LEASES. (a)  Section 3.23  of the
Target Disclosure Schedule  lists and describes  briefly all real  property
that any of the  Target and each Subsidiary owns. With respect to each such
parcel of owned real property  and except as noted  in Section 3.23 of  the
Target  Disclosure  Schedule:  (i)  the  identified   owner  has  good  and
marketable title  to the  parcel of  real property, free  and clear  of any
liens or encumbrances, easement, covenant, or other restriction, except for
installments of special assessments not yet delinquent, recorded easements,
covenants,  and   other  restrictions,  and  utility   easements,  building
restrictions,  zoning restrictions,  and  other easements  and restrictions
existing  generally with respect to properties of a similar character which
do  not  affect materially  and adversely  the  current use,  occupancy, or
value, or the marketability of title, of the property subject thereto; (ii)
there are no leases, subleases, licenses, concessions, or other agreements,
written or  oral, granting  to any party  or parties  the right  of use  or
occupancy of  any portion of the  parcel of real property;  and (iii) there
are no outstanding options or rights of first refusal to purchase, lease or
occupy the parcel  of real  property, or  any portion  thereof or  interest
therein.

     (b)  Section  3.23  of  the  Target  Disclosure  Schedule  lists   and
describes  briefly all  real property  leased or  subleased to  any  of the
Target and any Subsidiary.  With respect to each lease and sublease (i) the
lease or sublease is legal, valid, binding, enforceable,  and in full force
and effect  in all material respects;  (ii) to the knowledge  of Target, no<PAGE>


party  to the lease or  sublease is in  material breach or  default, and no
event has occurred which, with notice  or lapse of time, would constitute a
material  breach  or  default  or  permit  termination,  modification,   or
acceleration thereunder; (iii)  to the knowledge of Target, no party to the
lease or sublease has repudiated any material provision thereof; (iv) there
are no  material  disputes, oral  agreements,  or forbearance  programs  in
effect  as  to the  lease  or  sublease; (v)  none  of  the Target  or  any
Subsidiary has assigned, transferred, conveyed, mortgaged, deeded in trust,
or encumbered any interest in  the leasehold or subleasehold; and  (vi) all
facilities leased or  subleased thereunder have  received all approvals  of
governmental authorities (including material licenses and permits) required
in  connection with  the  operation thereof,  and  have been  operated  and
maintained in accordance  with applicable laws,  rules, and regulations  in
all material respects.

          SECTION  3.24.  INSURANCE.  Section 3.24 of the Target Disclosure
Schedule sets forth  a list  of each insurance  policy (including  policies
providing property, casualty, liability, and workers' compensation coverage
and  bond  and surety  arrangements)  to which  any  of the  Target  or any
Subsidiary has  been a party, a named insured, or otherwise the beneficiary
of coverage at  any time within the past three years.  With respect to each
such insurance  policy designated as "current":  (i) the policy is  in full
force  and effect; (ii)  Target has not received  notice from any insurance
carrier of the  intention of such  carrier to discontinue any  such policy;
(iii) neither any of the Target or  any Subsidiary nor, to the knowledge of
Target, any  other party to the  policy is in breach  or default (including
with respect to the payment of  premiums or the giving of notices), and  no
event  has  occurred  which,  with  notice  or the  lapse  of  time,  would
constitute  such a breach or default,  or permit termination, modification,
or acceleration,  under the policy;  and (iv)  no party to  the policy  has
repudiated  any provision thereof.   Section 3.24 of  the Target Disclosure
Schedule lists any self-insurance arrangements  affecting any of the Target
and the Subsidiaries.  All material assets and risks of the Target and each
Subsidiary are covered by valid and currently effective insurance  policies
in such types  and amounts as  are consistent with customary  practices and
standards  of companies  engaged in  businesses and  operations similar  to
those of the Target or such Subsidiary.

          SECTION 3.25.  ACCOUNTING AND TAX MATTERS.    (a) Except  as  set
forth in Section 3.25(a) of the Target Disclosure Schedule,  the Target has
no  knowledge  of  any plan  or  intention  on  the  part of  the  Target's
stockholders  (a  "Stockholder  Plan")  to  engage  in  a  sale,  exchange,
transfer, distribution (including, without limitation, a distribution by  a
partnership  to  its partners  or by  a  corporation to  its stockholders),
pledge, disposition or any  other transaction which results in  a reduction
in the risk of ownership or a  direct or indirect disposition (a "Sale") of
a  number  of  shares  of  Acquiror  Common Stock  to  be  issued  to  such
stockholders in the Merger, sufficient to reduce the Target's stockholders'
ownership  of  Acquiror Common  Stock  to  a  number  of shares  having  an
aggregate fair  market value, as  of the Effective  Time of the  Merger, of
less  than  fifty  percent  (50%)  of  the  aggregate  fair  market  value,
immediately prior to the Merger, of all outstanding shares of Target Common
Stock.  For  purposes of this paragraph, shares of  Target Common Stock (i)
with  respect to which a  Target stockholder receives  consideration in the
Merger  other than  Acquiror Common  Stock (including,  without limitation,
cash received in lieu of fractional shares of Acquiror Common Stock) and/or
(ii) with respect to which a Sale  occurs prior to and in contemplation  of<PAGE>


the Merger, shall be  considered shares of outstanding Target  Common Stock
exchanged  for Acquiror  Common Stock in  the Merger  and then  disposed of
pursuant to a Stockholder Plan.

          (b)  Neither  the  Target nor  any  Subsidiary  is an  investment
company as defined in Section 368(a)(2)(F)(iii) and (iv) of the Code.

          (c)  As  of  the Effective  Time, the  fair  market value  of the
assets  of  the Target  and the  Subsidiaries will  exceed  the sum  of its
liabilities, plus the  amount of  other liabilities, if  any, to which  its
assets are subject.

          (d)  Neither  the   Target  nor  any  Subsidiary   is  under  the
jurisdiction of a court in a Title 11 or similar case within the meaning of
Section 368(a)(3)(A) of the Code.

          SECTION  3.26.  BOARD RECOMMENDATION.   At a  meeting duly called
and  held in compliance  with Delaware Law,  the Board of  Directors of the
Target has unanimously adopted a resolution (i) approving the Merger, based
on  a  determination  that the  Merger  offers  the  best value  reasonably
available  to the stockholders  of Target and  is in the  best interests of
such Target stockholders and (ii) approving and adopting this Agreement and
the Transactions and  recommending approval and adoption  of this Agreement
and the Transactions by the stockholders of the Target.

          SECTION 3.27.  CHANGE IN CONTROL.  Except as set forth in Section
3.27  of the  Target  Disclosure  Schedule,  neither  the  Target  nor  any
Subsidiary is a  party to  any contract, agreement  or understanding  which
contains  a "change in control,"  "potential change in  control" or similar
provision.   Except as set forth  in Section 3.27 of  the Target Disclosure
Schedule,  the consummation of the  Transactions will not  (either alone or
upon the occurrence of any additional acts or events) result in any payment
(whether of severance pay or otherwise) becoming due from the Target or any
Subsidiary to any person. 

          SECTION 3.28.   TARGET DRILLING RIGS.   (a)  Section  3.28 of the
Target Disclosure Schedule  sets forth a list  of the Target  Drilling Rigs
and, if applicable, the name of the nation under which each drilling rig is
documented and  flagged and indicates all drilling rigs that are laid up or
being held for sale on the  date hereof.  With respect to the  owned Target
Drilling  Rigs, the  Target or  a Subsidiary  has good  title to  each such
drilling   rig,  free  and   clear  of   all  mortgages,   pledges,  liens,
encumbrances, charges, or other  security interests except for such  as are
disclosed in  Section 3.28  of the  Target Disclosure  Schedule and  in the
Target SEC Reports.

     (b)  With  respect to each Target Drilling Rig that is operated by the
Target  or any Subsidiary  under lease or  charter, (i) the  Target or such
Subsidiary has  a valid right to  charter or a valid  leasehold interest in
such drilling  rig; (ii) such charter  agreement or lease is  in full force
and effect in accordance with its terms; (iii) all  rents, charter payments
and  other  similar  monetary amounts  that  have  become  due and  payable
thereunder   have  been  paid  in  full;  (iv)  no  waiver,  indulgence  or
postponement  of the obligations thereunder  has been granted  by the other
party thereof; (v) there exists no material default (or an event that, with
notice or lapse of time or both would constitute a material default) on the
part of  the Target, or  to the knowledge  of the Target, any  other person<PAGE>


under such charter agreement or  lease; (vi) the Target or such  Subsidiary
has not  violated any  of the  terms or conditions  under any  such charter
agreement  or  lease and  to  the  knowledge of  the  Target  there are  no
conditions  or covenants  to be  observed or  performed by any  other party
under  such charter  agreement  or lease  that have  not  been observed  or
performed in all material respects; and (vii) the transactions described in
this Agreement will not constitute a default under or cause for termination
or modification of any terms of such charter agreement or lease.

     (c)  Section 3.28 of the Target Disclosure Schedule contains a list of
all  leases  or  charters providing  for  the  use  by  the Target  or  any
Subsidiary of a Target Drilling  Rig.  Complete and correct copies  of each
lease or charter have been delivered to Acquiror.

     (d)  With respect to each Target Drilling Rig: (i) if applicable, such
Target Drilling  Rig  is lawfully  documented under the flag  of the nation
listed on Section  3.28 of the Target  Disclosure Schedule for such  Target
Drilling Rig; (ii) if applicable,  such Target Drilling Rig  is  afloat and
in satisfactory operating  condition for  charter hire;  (iii) such  Target
Drilling Rig   holds in full  force and effect  all certificates, licenses,
permits and rights required  for operation in the  manner drilling rigs  of
its  kind are being operated in the  geographical area in which such Target
Drilling Rig   is presently being operated which the  failure to hold would
reasonably be expected to have a Material Adverse Effect on Target; (iv) no
event  has occurred  and  no  condition  exists  that  would  endanger  the
maintenance of the  classification of  such Target Drilling  Rig, (v)  such
Target Drilling Rig which is a  jack-up drilling rig is considered  by  the
American Bureau of  Shipping to  be in class  as a Maltese  Cross A1  Self-
Elevating Drilling Unit and free of any recommendations and average damages
affecting class,  and  (vi) there  exists  no outstanding  requirements  or
recommendations resulting from  any inspections by, or rules or regulations
of, the U.S. Coast  Guard, the U.S. Minerals  Management Service, the  U.S.
Occupational  Safety and Health  Administration, or any  nation under which
any of  the  Target Drilling  Rigs are  flagged which  would reasonably  be
expected to have a Material Adverse Effect on Target.

     (e)  Section 3.28 of the Target Disclosure Schedule contains a list of
the  geographical location  in which  each Target  Drilling Rig   is  being
operated as  of the date hereof.  Each Target  Drilling Rig  can be removed
from such  geographical  location  and transported  to  the  United  States
without the payment,  liability or  imposition of any  material tax,  duty,
impost or other payment of any kind to any foreign governmental authority.

     SECTION 3.29.  SIME-DUAL SDN BHD.  Section   3.29    of   the   Target
Disclosure  Schedule lists all agreements in respect of  Sime-Dual Drilling
Sdn Bhd, a Malaysian company ("Sime-Dual").  Target represents and warrants
that (i) the Shareholders Agreement dated  October 24, 1994 by and among SD
Holdings Berhad, a  Malaysian company  ("SD"), Target and   Sime-Dual  (the
"Original Agreement"), as  amended pursuant to that certain First Amendment
to the  Shareholders Agreement  dated June  5, 1995 by  and among  SD, Sime
Darby Drilling Sdn Bhd, a Malaysian company ("SDD"), Target,  DAI and Sime-
Dual  (the  "First  Amendment")  (the  Original  Agreement  and  the  First
Amendment are collectively  referred to as,  the "Shareholders  Agreement")
has not been amended (other  than the First Amendment) and remains  in full
force and effect  and to the knowledge of the Target  there exists no Event
of Default (as defined in  the Shareholders Agreement), or facts or  events
which with the passage of time or the giving or  notice would constitute an<PAGE>


Event of Default, and no waivers of performance have been granted by Target
or DAI of any of SD's or SDD's  obligations thereunder, (ii) neither a Dual
Triggering Event  or a SD Triggering  Event (as those terms  are defined in
the  Shareholders  Agreement)  has occurred,    (iii)  there  have been  no
guaranties given by  either Target or, to the knowledge  of the Target, SDD
as described in Sub-Clause 6.3 of the First Amendment, (iv) there have been
no notices  provided by SDD  or SD to trigger  the put option  described in
Clause  19.5 of the Original  Agreement, (v) the  Joint Operating Agreement
dated  June  5,  1995  by  and among  SDD  and  DAI  (the  "Joint Operating
Agreement")  has not been amended and remains  in full force and effect and
to the knowledge of the Target  there exists no material defaults, or facts
or events  which with  the passage of  time or the  giving or  notice would
constitute  a material  default, and  no waivers  of performance  have been
granted by  Target or DAI of  any of SD's or  SDD's obligations thereunder,
(vi) no  Sale Notice (as defined in the Joint Operating Agreement) has been
given by DAI or SDD, and (vii)  the Joint Bareboat Charter Agreement  dated
June  5, 1995  by and  among SDD,  DAI and  Sime-Dual (the  "Joint Bareboat
Charter") has not been amended and remains in full force  and effect and to
the knowledge of the Target there exists no material defaults,  or facts or
events  which with  the  passage of  time  or the  giving  or notice  would
constitute  a material  default, and  no waivers  of performance  have been
granted by Sime-Dual of any of SDD's or DAI's obligations thereunder.

     SECTION  3.30.  ACCOUNTS RECEIVABLE.   All of  the accounts receivable
reflected in  the 1995 Balance Sheet  or created thereafter to  the best of
the  Target s  knowledge are  valid receivables  subject  to no  setoffs or
counterclaims,  are  current  and  collectible and  will  be  collected  in
accordance with their terms at their recorded  amounts, subject only to the
reserve for bad  debts set forth in the 1995 Balance  Sheet as adjusted for
operations and transactions  through the Effective Time in  accordance with
the past custom and practice of the Target and the Subsidiaries.


                                 ARTICLE IV

                 REPRESENTATIONS AND WARRANTIES OF ACQUIROR
                              AND ACQUIROR SUB

          Except  as set  forth in  the  Disclosure Schedules  delivered by
Acquiror  to  the  Target  and  signed  by  the  Target  and  Acquiror  for
identification prior to the  execution and delivery of this  Agreement (the
"Acquiror  Disclosure  Schedules"),  which  shall  identify  exceptions  by
specific section references, Acquiror and Acquiror Sub hereby, jointly  and
severally, represent and warrant to the Target that:

          SECTION   4.01.     CORPORATE  ORGANIZATION   AND  QUALIFICATION.
Acquiror and Acquiror Sub are corporations duly organized, validly existing
and  in  good  standing  under  the  laws  of  the  jurisdiction  of  their
incorporation  and have the requisite corporate power and authority and all
necessary governmental approvals to own, lease and operate their properties
and  to  carry  on  their  respective  businesses  as  they are  now  being
conducted,  except  where the  failure to  have  such power,  authority and
governmental  approvals would not, individually or in the aggregate, have a
Material  Adverse Effect.  Acquiror and Acquiror  Sub are duly qualified or
licensed as a foreign corporation to do business, and are in good standing,
in each jurisdiction where the character of the properties owned, leased or
operated by them  or the nature  of their respective businesses  makes such<PAGE>


qualification or licensing  necessary, except  for such failures  to be  so
qualified or licensed and in good standing as would not, individually or in
the aggregate, have a Material Adverse Effect.

          SECTION 4.02.  CERTIFICATE OF INCORPORATION AND BYLAWS.  Acquiror
has heretofore furnished  or made available  to the  Target a complete  and
correct  copy of the Certificate  of Incorporation and  Bylaws of Acquiror,
and the Certificate of  Incorporation and Bylaws  of Acquiror Sub, each  as
amended to date.   Neither Acquiror nor Acquiror Sub is in violation of any
provision of its Certificate of Incorporation or Bylaws.

          SECTION 4.03.  CAPITALIZATION.  As of the date of this Agreement,
the  authorized capital stock of Acquiror consists of 125,000,000 shares of
Acquiror Common Stock, 5,000,000 shares of First Preferred Stock, $1.00 par
value,  and 15,000,000 shares of  Serial Preferred Stock,  $1.00 par value,
1,250,000  of which have been  designated as Series  A Junior Participating
Preferred Stock (collectively, "Acquiror Preferred Stock").  As of December
31, 1995,  (a) 60,605,772 shares  of Acquiror Common Stock  were issued and
outstanding,   all   of  which   were  validly   issued,  fully   paid  and
nonassessable, (b) 6,285,448 shares  of Acquiror Common Stock were  held in
the treasury of  Acquiror, (c)  1,120,850 shares of  Acquiror Common  Stock
were reserved  for future  issuance pursuant  to outstanding stock  options
granted  pursuant to Acquiror's  stock option  plan, and  (d) no  shares of
Acquiror Preferred Stock were outstanding.  The authorized capital stock of
Acquiror Sub  consists of 10,000  shares of Acquiror  Sub Common Stock,  of
which,  as of  the date  of  this Agreement,  1,000 shares  are issued  and
outstanding and held by Acquiror.  Except as contemplated by this Agreement
or that certain Rights Agreement (herein so called) dated February 21, 1995
or as set forth in Section 4.03 of the Acquiror Disclosure Schedule or  the
Acquiror  SEC  Reports, as  of the  date of  this  Agreement, there  are no
options, warrants or other rights, agreements, arrangements or  commitments
of  any  character relating  to the  issued  or unissued  capital  stock of
Acquiror or any subsidiary of  Acquiror, including Acquiror Sub  ("Acquiror
Subsidiary"), obligating Acquiror  or any Acquiror  Subsidiary to issue  or
sell any shares of capital stock of, or other equity interests in, Acquiror
or any Acquiror Subsidiary.  Between December 31, 1995 and the date of this
Agreement, no shares of Acquiror Common Stock have been issued by Acquiror,
except  pursuant to  the  options, warrants  or  other rights,  agreements,
arrangements and commitments described in this Section 4.03 or Section 4.03
of the Acquiror Disclosure Schedule, in each case, in accordance with their
respective  terms.   There are  no outstanding  contractual obligations  of
Acquiror or  any  Acquiror Subsidiary  to repurchase,  redeem or  otherwise
acquire any  shares of Acquiror Common  Stock, or any capital  stock of, or
any equity interests  in, any Acquiror Subsidiary.  The  shares of Acquiror
Common Stock to be issued  pursuant to the Merger will be  duly authorized,
validly  issued, fully paid and nonassessable and not subject to preemptive
rights  created  by statute,  Acquiror's  Certificate  of Incorporation  or
Bylaws  or any agreement to which Acquiror  is a party or by which Acquiror
is bound and will, when issued, except with respect  to shares to be issued
to Dual Invest AS, be registered  under the Securities Act and the Exchange
Act  and registered or exempt  from registration under  applicable Blue Sky
Laws.

          SECTION 4.04.   AUTHORITY RELATIVE  TO THIS AGREEMENT.   Each  of
Acquiror and Acquiror Sub  has all necessary corporate power  and authority
to execute and  deliver this Agreement and, with respect  to the Merger, to
perform  its obligations hereunder and to consummate the Transactions.  The<PAGE>


execution and delivery of this  Agreement by Acquiror and Acquiror Sub  and
the consummation by Acquiror and Acquiror Sub of the Transactions have been
duly  and validly authorized by all necessary corporate action and no other
corporate proceedings on the part of Acquiror or Acquiror Sub are necessary
to  authorize this Agreement or to consummate the Transactions (other than,
with  respect  to the  issuance of  Acquiror Common  Stock pursuant  to the
Merger,  the applicable rules and regulations  of NYSE, and with respect to
the Merger, the  filing and  recordation of an  appropriate Certificate  of
Merger with the Secretary as required by Delaware Law).  This Agreement has
been  duly and validly executed and delivered  by Acquiror and Acquiror Sub
and,  assuming  the  due  authorization,  execution  and  delivery of  this
Agreement  by the Target, constitutes a legal, valid and binding obligation
of each  of Acquiror and Acquiror Sub  enforceable against each of Acquiror
and Acquiror Sub in accordance with its terms.

          SECTION 4.05.  NO  CONFLICT; REQUIRED FILINGS AND CONSENTS.   (a)
The execution and delivery  of this Agreement by Acquiror and  Acquiror Sub
do not,  and the performance of this Agreement by Acquiror and Acquiror Sub
will not, subject to obtaining the  consents, approvals, authorizations and
permits and making  the filings  described in Section  4.05(b) and  Section
4.05(b) of the Acquiror  Disclosure Schedule, (i) conflict with  or violate
the  Certificate of  Incorporation  or Bylaws  of  either Acquiror  or  any
Acquiror  Subsidiary, (ii) conflict with  or violate any  Law applicable to
Acquiror or  any Acquiror Subsidiary or  by which any property  or asset of
any of  them is  bound or affected,  or (iii)  result in  any breach of  or
constitute a default  (or an event  which with notice  or lapse of time  or
both would  become  a default)  under,  or give  to  others any  rights  of
termination, amendment, acceleration or  cancellation of, or result  in the
creation  of a  lien  or other  encumbrance  on any  property  or asset  of
Acquiror  or any Acquiror  Subsidiary or require  the consent of  any third
party  pursuant   to,  any  note,  bond,   mortgage,  indenture,  contract,
agreement,  lease,  license,  permit,  franchise  or  other  instrument  or
obligation to  which Acquiror or any  Acquiror Subsidiary is a  party or by
which  Acquiror or any Acquiror Subsidiary or  any property or asset of any
of them is  bound or affected,  except for any such  conflicts, violations,
breaches, defaults or other occurrences which would not, individually or in
the  aggregate, have  a  Material Adverse  Effect  on Acquiror  or  prevent
Acquiror  and   Acquiror  Sub  from  timely   performing  their  respective
obligations under this Agreement and consummating the Transactions.

          (b)  The execution and delivery of this Agreement by Acquiror and
Acquiror Sub  do not, and the performance of this Agreement by Acquiror and
Acquiror Sub  will not,  require  any consent,  approval, authorization  or
permit  of,  or  filing  with  or  notification  to,  any  governmental  or
regulatory  authority, domestic  or  foreign, except  (i)  pursuant to  the
Exchange Act, the Securities Act, Blue Sky  Laws and the HSR Act and filing
and  recordation of an appropriate Certificate of Merger with the Secretary
as required  by Delaware Law, (ii)  as specified in Section  4.05(b) of the
Acquiror Disclosure  Schedule,  and  (iii) where  failure  to  obtain  such
consents,  approvals, authorizations or permits, or to make such filings or
notifications, would not  have a  Material Adverse Effect  on Acquiror  and
would not prevent or  delay consummation of the Transactions,  or otherwise
prevent  Acquiror   or  Acquiror  Sub  from   performing  their  respective
obligations under this Agreement.

          SECTION  4.06.  SEC FILINGS; FINANCIAL STATEMENTS.  (a)  Acquiror
has filed all forms, reports and documents required to be  filed by it with<PAGE>


the SEC since December 31, 1992 (collectively, the "Acquiror SEC Reports").
The  Acquiror SEC  Reports (i) were  prepared in  all material  respects in
accordance with the  requirements of  the Securities Act  and the  Exchange
Act, as the case may  be, and the rules and regulations thereunder and (ii)
did not, at the time they  were filed (or at the effective date  thereof in
the case of  registration statements),  contain any untrue  statement of  a
material fact  or omit  to  state a  material fact  required  to be  stated
therein or necessary  in order to make the statements  made therein, in the
light of  the circumstances under which they were made, not misleading.  No
Acquiror Subsidiary is currently required to file any form, report or other
document with the SEC under Section 12 of the Exchange Act.

          (b)  Each of the consolidated financial statements (including, in
each case,  any notes thereto)  contained in the  Acquiror SEC Reports  was
prepared in  accordance  with U.S.  GAAP throughout  the periods  indicated
(except as may be indicated in the notes thereto and  except that financial
statements included with interim reports do not contain all U.S. GAAP notes
to such financial  statements) and  each fairly presented  in all  material
respects  the consolidated  financial position,  results of  operations and
changes  in stockholders'  equity  and  cash  flows  of  Acquiror  and  its
consolidated  subsidiaries as at the  respective dates thereof  and for the
respective periods  indicated therein  (subject, in  the case of  unaudited
statements, to normal and recurring year-end adjustments which were not and
are  not expected,  individually or in  the aggregate,  to have  a Material
Adverse Effect on Acquiror).

          SECTION  4.07.   ABSENCE  OF CERTAIN  CHANGES  OR EVENTS.   Since
December 31, 1995,  except as  contemplated by, or  disclosed pursuant  to,
this Agreement including Section 4.07 of the Acquiror  Disclosure Schedule,
or disclosed in any Acquiror  SEC Report filed since December 31,  1995 and
prior to  the date of this Agreement, Acquiror and each Acquiror Subsidiary
has conducted their businesses only in  the ordinary course and in a manner
consistent with past  practice and, since December 31, 1995,  there has not
been (a)  any  event or  events  (whether  or not  covered  by  insurance),
individually  or  in the  aggregate, having  a  Material Adverse  Effect on
Acquiror,  (b) any material change  by Acquiror in  its accounting methods,
principles  or practices,  (c)  any  entry  by  Acquiror  or  any  Acquiror
Subsidiary into any commitment  or transaction material to Acquiror  or any
Acquiror  Subsidiary,  except  in  the  ordinary  course  of  business  and
consistent with  past  practice,  (d) any  declaration,  setting  aside  or
payment of any dividend or distribution  in respect of any capital stock of
Acquiror  or any  redemption, purchase or  other acquisition of  any of its
securities  or (e)  other than  pursuant to  Acquiror's benefit  plans, any
increase in or establishment  of any bonus, insurance, severance,  deferred
compensation,  pension,  retirement, profit  sharing,  stock  option, stock
purchase or  other employee benefit plan, except  in the ordinary course of
business consistent with past practice.

          (b)  As of the  date hereof  and the Effective  Time, except  for
obligations or liabilities incurred in connection with its incorporation or
organization and the  Transactions and  except for this  Agreement and  any
other agreements  or arrangements contemplated by  this Agreement, Acquiror
Sub has not and will not have incurred, directly or indirectly, through any
subsidiary or affiliate, any  obligations or liabilities or engaged  in any
business activities  of any  type or  kind whatsoever  or entered  into any
agreements or arrangements with any person.<PAGE>


          SECTION 4.08.  BROKERS.   No broker, finder or  investment banker
is  entitled  to any  brokerage,  finder's or  other  fee or  commission in
connection  with the  Transactions based  upon arrangements  made by  or on
behalf of Acquiror or any Acquiror Subsidiary.

          SECTION  4.09.  TAXES.  (a) Acquiror and each Acquiror Subsidiary
has (i) filed all federal, state, local and foreign tax returns required to
be filed  by them prior to the date of  this Agreement (taking into account
extensions) and all of such  returns were true and correct in  all material
respects when filed  and in  compliance with applicable  law, (ii) paid  or
accrued all taxes shown  to be due on such returns and  paid all applicable
ad valorem and value added taxes  as are due and (iii) paid or  accrued all
taxes  for which  a notice of  assessment or  collection has  been received
(other  than  amounts   being  contested  in  good   faith  by  appropriate
proceedings), except in the case of clause (i),  (ii) or (iii) for any such
filings,  payments  or accruals  which would  not,  individually or  in the
aggregate, have a Material Adverse Effect.   Except as set forth in Section
4.09(a) of the  Acquiror Disclosure Schedule, neither  the Internal Revenue
Service nor any other federal, state, local or foreign taxing authority has
asserted any  claim for  taxes, or  to the best  knowledge of  Acquiror, is
threatening to assert any  claims for taxes, which claims,  individually or
in the aggregate, could have a Material Adverse Effect.   Acquiror has open
years for federal,  state and foreign income tax returns  only as set forth
in  Section  4.09(a)  of  the  Acquiror  Disclosure Schedule,  and  neither
Acquiror  nor any Acquiror Subsidiary (i) has executed any waiver to extend
the time  for assessment of  any federal, state,  local or foreign  tax, or
(ii) filed, or has pending, any  request or application for ruling, whether
federal,  state, local or foreign.   Acquiror and  each Acquiror Subsidiary
have  withheld or collected and  paid over to  the appropriate governmental
authorities (or are properly  holding for such payment) all  taxes required
by  law to  be withheld or  collected, except  for amounts  that would not,
individually or in the  aggregate, have a Material Adverse Effect.  Neither
Acquiror nor any  Acquiror Subsidiary  has made an  election under  Section
341(f)  of the  Code.   There are  no liens  for taxes  upon the  assets of
Acquiror or any  Acquiror Subsidiary (other  than liens for taxes  that are
not  yet  due or  that are  being contested  in  good faith  by appropriate
proceedings),  except for  liens which  would not,  individually or  in the
aggregate,  have a  Material Adverse  Effect.   Acquiror and  each Acquiror
Subsidiary have complied  with all  federal, state, local  and foreign  tax
laws  except where such failure    would  not result in  a Material Adverse
Effect.  

     (b)  Neither Acquiror nor any Acquiror Subsidiary has taken or  agreed
to  take any  action  that would  prevent the  Merger  from constituting  a
reorganization qualifying  under the  provisions of  Section 368(a)  of the
Code.

     (c)  The  financial statements included in the Acquiror SEC Reports as
of  December 31, 1995 includes appropriate reserves for all federal, state,
local and foreign taxes and other  liabilities incurred as of such date but
not yet payable. 

     (d)  The net  operating  losses  and  other  carryovers  available  to
Acquiror  and each Acquiror Subsidiary as of  the date hereof are described
in Section  4.09 of the  Acquiror Disclosure  Schedule or the  Acquiror SEC
Reports and as of the date hereof the ability of Acquiror and each Acquiror
Subsidiary to use  such carryovers will  not have been affected  by Section<PAGE>


382, 383, or 384  of the Code or by the separate  return limitation year or
consolidated return charge of ownership limitations of Treas. Regs. Section
1.1502-21 or 1.1502-22.

     (e)  Acquiror  is  not a  U.S.  real  property holding  company  under
Section 897 of the Code. 

     (f)  Neither  Acquiror nor  Acquiror Sub  is an investment  company as
defined in Section 368(a)(2)(F)(iii) and (iv) of the Code. 

     (g)  Neither  Acquiror  nor  any  Acquiror  Subsidiary  is  under  the
jurisdiction of a court  in Title 11 or similar case  within the meaning of
Section 368(a)(3)(A) of the Code.

     (h)  Neither  Acquiror or any  Acquiror Subsidiary holds  stock of the
Target and will not hold stock of the Target prior to the Merger.



                                 ARTICLE V

                   CONDUCT OF BUSINESS PENDING THE MERGER

          SECTION  5.01.   CONDUCT OF  BUSINESS BY  THE TARGET  PENDING THE
MERGER.  The  Target covenants and  agrees that, between  the date of  this
Agreement and  the Effective Time, except  as set forth in  Section 5.01 of
the Target Disclosure Schedule or as contemplated by any other provision of
this Agreement, unless  Acquiror shall  otherwise agree  in writing  (which
agreement  shall not  be unreasonably  withheld), (i)  the business  of the
Target and  the Subsidiaries shall be conducted only in, and the Target and
the Subsidiaries shall not take  any action except in, the  ordinary course
of  business consistent  with  past practice  and  in accordance  with  all
applicable  laws, (ii)  the  Target shall  use  all reasonable  efforts  to
preserve substantially intact its business organization, to keep  available
the  services of  the current  officers, employees  and consultants  of the
Target  and the Subsidiaries and  to preserve the  current relationships of
the Target and the Subsidiaries with customers, suppliers and other persons
with which the Target or any Subsidiary has significant business relations,
(iii) the Target shall not and shall not permit any Subsidiary to engage in
any practice,  take any action, or  enter into any transaction  of the sort
described in Section 3.08  above, and (iv)  the Target and each  Subsidiary
shall  cause  to  be  maintained in  full  force  and  effect, and  without
modification  or amendment, or any lapse of  coverage under,  all insurance
polices described in Section 3.24 of the Target Disclosure Schedule.
     
          SECTION  5.02.    CONDUCT OF  BUSINESS  BY  ACQUIROR PENDING  THE
MERGER.    Acquiror  covenants and  agrees that, between  the date  of this
Agreement and  the Effective Time, except  as set forth in  Section 5.02 of
the  Acquiror Disclosure Schedule or as contemplated by any other provision
of  this  Agreement, unless  the Target  shall  otherwise agree  in writing
(which  agreement will not be unreasonably withheld), (i) the businesses of
Acquiror and  Acquiror Sub  shall be conducted  only in,  and the  Acquiror
shall not, and  shall cause Acquiror Sub not to, take any action except in,
the  ordinary course  of  business consistent  with  past practice  and  in
accordance with all  applicable Laws, and (ii) Acquiror will  not (a) amend
or  otherwise  change  its  Certificate  of  Incorporation  or Bylaws,  (b)
declare, set aside, make or pay any dividend or other distribution, payable<PAGE>


in  cash, stock, property or otherwise, with  respect to any of its capital
stock, or (c)  reclassify, combine, split  or divide its  capital stock  or
redeem, purchase or otherwise  acquire, directly or indirectly, any  of its
capital stock or securities or obligations convertible into or exchangeable
for such capital stock.

                                 ARTICLE VI

                           ADDITIONAL AGREEMENTS

          SECTION  6.01.  REGISTRATION STATEMENT; PROXY STATEMENT.  (a)  As
promptly as  practicable after  the execution of  this Agreement,  Acquiror
shall prepare  and file with the  SEC a registration statement  on Form S-4
(together  with  all  amendments  thereto,  the  "Registration  Statement")
including therein a combined proxy statement to be sent to the stockholders
of  the Target (the "Proxy  Statement") and Prospectus,  in connection with
the registration under the Securities Act of  the shares of Acquiror Common
Stock  to  be issued  to the  stockholders of  the  Target pursuant  to the
Merger.   Acquiror and the Target each  shall use all reasonable efforts to
cause  the  Registration  Statement  to  become  effective  as promptly  as
practicable,   and,  prior  to  the  effective  date  of  the  Registration
Statement,  Acquiror  shall  take all  or  any  action  required under  any
applicable federal or state securities laws in connection with the issuance
of shares of  Acquiror Common Stock  pursuant to the  Merger.  Each  of the
Target  and Acquiror shall pay its own expenses incurred in connection with
the Registration Statement, Proxy Statement and the Target's  Stockholders'
Meeting, including, without limitation, the fees and disbursements of their
respective counsel, accountants and other representatives, except that  the
Target and  Acquiror each shall  pay one-half of  any printing,  filing and
other fees and expenses incurred in connection therewith.  The Target shall
furnish all information  concerning the Target  as Acquiror may  reasonably
request  in connection  with  such  actions  and  the  preparation  of  the
Registration  Statement and Proxy  Statement.   As promptly  as practicable
after the Registration  Statement shall have  become effective, the  Target
shall mail the  Proxy Statement to  its stockholders.  The  Proxy Statement
shall include the unanimous recommendation of the Board of Directors of the
Target in favor of the Merger.

          No  amendment  or  supplement  to  the  Proxy  Statement  or  the
Registration  Statement will be made by  Acquiror or the Target without the
approval  of the  other party,  which shall  not be  unreasonably withheld.
Acquiror  and the  Target each  will advise  the  other, promptly  after it
receives  notice thereof, of the  time when the  Registration Statement has
become  effective  or  any supplement  or  amendment  has  been filed,  the
issuance  of any stop  order, the  suspension of  the qualification  of the
Acquiror Common Stock issuable  in connection with the Merger  for offering
or sale in any jurisdiction, or any request by the SEC for amendment of the
Proxy Statement  or  the Registration  Statement  or comments  thereon  and
responses thereto or requests by the SEC for additional information.

          Acquiror  shall promptly prepare and submit to the NYSE a listing
application  covering the shares of  Acquiror Common Stock  issuable in the
Merger, and shall  use its reasonable best efforts to  obtain, prior to the
Effective Time, approval  for the  listing of such  Acquiror Common  Stock,
subject to official notice of issuance, and the Target shall cooperate with
Acquiror with respect to such listing.<PAGE>


          (b)  Acquiror   represents,  warrants   and   agrees   that   the
information  supplied  by  Acquiror  for  inclusion  in  the   Registration
Statement  and  the  Proxy  Statement  shall  not,  at  (i)  the  time  the
Registration  Statement  is declared  effective,  (ii) the  time  the Proxy
Statement  (or any amendment thereof or supplement thereto) is first mailed
to  the  stockholders  of  the  Target,  (iii) the  time  of  the  Target's
Stockholder Meeting (as hereinafter defined), and (iv) the Effective  Time,
contain any statement which, at such time and in light of the circumstances
under which it is made, is false or misleading with respect to any material
fact, or omit to state any material fact required  to be stated therein, or
necessary in order to make the  statements therein not false or misleading.
If  at  any time  prior to  the Effective  Time  any event  or circumstance
relating  to Acquiror or Acquiror  Subsidiary, or their respective officers
or directors, should be discovered by Acquiror which should be set forth in
an  amendment  or  a supplement  to  the  Registration  Statement or  Proxy
Statement, Acquiror shall promptly inform the Target.  Notwithstanding  the
foregoing,  Acquiror and  Acquiror Sub  make no representation  or warranty
with  respect  to any  information supplied  by the  Target  or any  of its
representatives which is contained  in the Registration Statement  or Proxy
Statement.   All documents that Acquiror is responsible for filing with the
SEC  in connection with the transactions contemplated herein will comply as
to  form  and  substance  in  all  material  aspects  with  the  applicable
requirements  of  the   Securities  Act  and  the   rules  and  regulations
promulgated thereunder and the  Exchange Act and the rules  and regulations
promulgated thereunder.

          (c)  The  Target   represents,  warrants  and  agrees   that  the
information  supplied  by  the Target  for  inclusion  in the  Registration
Statement  and  the  Proxy  Statement  shall  not,  at  (i)  the  time  the
Registration Statement  is  declared effective,  (ii)  the time  the  Proxy
Statement  (or any amendment thereof or supplement thereto) is first mailed
to  the  stockholders  of the  Target,  (iii)  the  time  of  the  Target's
Stockholder  Meeting, and (iv)  the Effective  Time, contain  any statement
which,  at such time  and in light  of the circumstances  under which it is
made, is false or  misleading with respect to any material fact, or omit to
state  any material  fact required  to be stated  therein, or  necessary in
order  to make the statements  therein not false or misleading.   If at any
time prior to the Effective Time  any event or circumstance relating to the
Target, or its  officers or directors, should  be discovered by the  Target
which  should  be  set  forth  in  an  amendment  or  a  supplement to  the
Registration Statement or Proxy Statement, the Target shall promptly inform
Acquiror.      Notwithstanding  the   foregoing,   the   Target  makes   no
representation or  warranty with  respect  to any  information supplied  by
Acquiror  or  Acquiror  Sub   or  any  of  their  representatives   in  the
Registration Statement or Proxy  Statement.  All documents that  the Target
is responsible for filing with the SEC in connection with  the transactions
contemplated  herein will comply as  to form and  substance in all material
respects with the  applicable requirements  of the Securities  Act and  the
rules and regulations promulgated  thereunder and the Exchange Act  and the
rules and regulations promulgated thereunder.

          (d)  The Target,  Acquiror  and  Acquiror  Sub  each  hereby  (i)
consents to the  use of its  name and,  on behalf of  its subsidiaries  and
affiliates,  the names  of  such subsidiaries  and  affiliates and  to  the
inclusion of financial statements and business information relating to such
party  and its subsidiaries  and affiliates  (in each  case, to  the extent
required by applicable  securities laws) in the Registration  Statement and<PAGE>


the  Proxy Statement; (ii)  agrees to use all  reasonable efforts to obtain
the written consent  of any person  or entity retained by  it which may  be
required  to be  named  (as an  expert  or otherwise)  in  the Registration
Statement or the Proxy Statement; and (iii) agrees to cooperate, and agrees
to use all  reasonable efforts to cause its subsidiaries  and affiliates to
cooperate, with any legal counsel,  investment banker, accountant or  other
agent or representative retained by any of the parties  specified in clause
(i)  above in connection  with the preparation  of any and  all information
required, as determined after consultation with each party s counsel, to be
disclosed by applicable  securities laws in  the Registration Statement  or
the Proxy Statement.

          SECTION 6.02.  TARGET STOCKHOLDER MEETING.  The Target shall call
and hold a meeting of its stockholders (the "Target's Stockholder Meeting")
as promptly as practicable for  the purpose of voting upon the  approval of
this Agreement  and the Merger, and  the Target shall use  all commercially
reasonable  efforts to  hold the  Target's Stockholder  Meeting as  soon as
practicable  after the  date on  which the  Registration Statement  becomes
effective.  The  Target shall  use all commercially  reasonable efforts  to
solicit from  its stockholders  proxies in  favor of the  approval of  this
Agreement  and  the  Merger and  shall  take  all  other action  reasonably
necessary  or advisable  to  secure the  vote  or consent  of  stockholders
required by  Delaware Law to  obtain such approvals  (including unanimously
recommending such approval).

          SECTION 6.03.  APPROPRIATE  ACTION; CONSENTS; FILINGS.  (a)   The
Target, Acquiror and Acquiror Sub shall use their best efforts to (i) take,
or cause to  be taken, all appropriate action, and do, or cause to be done,
all  things necessary, proper or advisable under applicable Law or required
to be taken by  any Governmental Authority  or otherwise to consummate  and
make effective  the Transactions  as promptly  as practicable, (ii)  obtain
from any Governmental Authorities any consents, licenses, permits, waivers,
approvals,  authorizations or  orders required  to be  obtained or  made by
Acquiror or the Target or any of their subsidiaries in  connection with the
authorization,   execution  and   delivery  of   this  Agreement   and  the
consummation  of  the  Transactions,  including,  without  limitation,  the
Merger, and (iii) as  promptly as practicable, make all  necessary filings,
and  thereafter make any other  required submissions, with  respect to this
Agreement and the  Merger required  under (A)  the Securities  Act and  the
Exchange  Act, and any other  applicable federal or  state securities Laws,
(B) the rules and  regulations of the NYSE,  (C) Delaware Law, (D)  the HSR
Act  and any  related governmental  request thereunder,  and (E)  any other
applicable  Law; provided that Acquiror and the Target shall cooperate with
each other  in connection with  the making  of all such  filings, including
providing  copies of all  such documents  to the  non-filing party  and its
advisors  prior  to  filing and,  if  requested,  accepting all  reasonable
additions, deletions  or changes suggested  in connection  therewith.   The
Target and Acquiror  shall use reasonable best  efforts to furnish  to each
other all  information required for any  application or other filing  to be
made pursuant to the rules and regulations of any applicable Law (including
all information  required to be  included in  the Proxy  Statement and  the
Registration Statement) in connection with the transactions contemplated by
this Agreement.

          (b)  (i)   Each of Acquiror and  the Target shall give  (or shall
cause  their respective subsidiaries to give) any notices to third parties,
and use, and cause their respective subsidiaries to use, their commercially<PAGE>


reasonable  efforts to obtain any third party consents (including those set
forth   in  Section   3.05(a)(iii)),  (A)   necessary  to   consummate  the
Transactions,  (B)  disclosed or  required to  be  disclosed in  the Target
Disclosure  Schedule or the Acquiror Disclosure Schedule or (C) required to
prevent a  Material Adverse  Effect from  occurring prior  to or  after the
Effective Time.

          (ii) In  the  event that  Acquiror or  the  Target shall  fail to
obtain any third  party consent  described in subsection  (b)(i) above,  it
shall use  its best  efforts, and  shall take  any such actions  reasonably
requested  by the  other party,  to minimize  any adverse  effect upon  the
Target and Acquiror,  their respective subsidiaries,  and their  respective
businesses resulting, or which could reasonably be expected to result after
the Effective Time, from the failure to obtain such consent.

          (iii)     The Target  agrees to cooperate with  Acquiror prior to
the Effective Time to clarify the  terms of any agreements which the Target
or any Subsidiary is currently  a party which might restrict the  Target or
any Subsidiary   from the conduct  of the operation, charter  or leasing of
drilling rigs in any area of the world so that from and after the Effective
Time  Acquiror  and the  Target will  obtain  the benefits  of  the current
practice under such agreements whereby Acquiror  and the Target will not be
so restricted in their operations.

          (c)  From the date  of this Agreement  until the Effective  Time,
each party  shall promptly notify the other party of any pending, or to the
best  knowledge  of the  first  party,  threatened, action,  proceeding  or
investigation by or before  any Governmental Authority or any  other person
(i) challenging or seeking  material damages in connection with  the Merger
or  the conversion of  the Target Common  Stock into Acquiror  Common Stock
pursuant  to  the  Merger  or (ii)  seeking  to  restrain  or prohibit  the
consummation of the Merger or otherwise  limit the right of Acquiror or, to
the knowledge of such first  party,  Acquiror Subsidiary to own  or operate
all or  any portion  of the businesses  or assets  of the Target,  which in
either case is  reasonably likely to have a Material  Adverse Effect on the
Target prior  to  the  Effective Time,  or  a Material  Adverse  Effect  on
Acquiror and the Acquiror  Sub (including the Surviving  Corporation) after
the Effective Time.

          SECTION 6.04.   ACCESS TO INFORMATION;  CONFIDENTIALITY.  Subject
to the  Confidentiality Agreement (as  hereinafter defined), from  the date
hereof to  the Effective Time, Acquiror and the Target will each provide to
the  other, during normal business hours and upon reasonable notice, access
to all information  and documents  which the other  may reasonably  request
regarding the business, assets, liabilities, employees and other aspects of
the other  party, other than information and  documents that in the opinion
of such other party's counsel may not be disclosed under applicable Law.

          SECTION 6.05.   NO SOLICITATION OF TRANSACTIONS. The Target shall
not,  directly or indirectly, negotiate with any person other than Acquiror
with respect to the  acquisition of the Target or the  shares of the Target
Common Stock owned by Dual  Invest AS and it will not, and  will not permit
any of  its  officers,  directors,  employees,  agents  or  representatives
(including   without   limitation,   investment   bankers,   attorneys  and
accountants)  to (i) initiate contact with, (ii) make, solicit or encourage
any  inquiries or  proposals,  (iii) enter  into,  or participate  in,  any
discussions or negotiations  with, (iv) disclose,  directly or  indirectly,<PAGE>


any  information  not customarily  disclosed  concerning  the business  and
properties of the Target or  any Subsidiary to or (v) afford  any access to
any  of the Target s or  any Subsidiary s properties,  books and records to
any person  in connection  with any possible  proposal relating to  (a) the
disposition of  their respective businesses  or substantially all  or their
assets,(b)  the  acquisition of  equity or  debt  securities of  the Target
including  equity or debt securities owned by  Dual Invest AS, or (iii) the
merger, share  exchange or  business  combination, or  similar  acquisition
transaction  of or involving Target or any Subsidiary with any person other
than Acquiror; provided,  however, that nothing  contained in this  Section
6.05 shall prohibit the Board of Directors of the Target (the "Board") from
taking and  disclosing  to the  stockholders of  the Target  a position  in
accordance with  Rules 14d-9 and 14e-2 under  the Exchange Act with respect
to  a tender offer or  an exchange offer  for share of  Target Common Stock
commenced by a  third party. The Target  shall notify Acquiror  promptly if
any  proposal or  offer, or  any inquiry  or contact  with any  person with
respect  thereto,  is made  and  shall,  in any  such  notice  to Acquiror,
indicate  in reasonable  detail  the identity  of  the person  making  such
proposal, offer, inquiry or  contact and the  terms and conditions of  such
proposal, offer, inquiry or contact.   The Target agrees not to release any
third  party  from,  or waive  any  provision  of,  any confidentiality  or
standstill  agreement  to  which  the  Target  is  a  party.    The  Target
immediately shall cease and cause to be terminated all existing discussions
or negotiations with any  parties conducted heretofore with respect  to any
of the foregoing. 

          SECTION 6.06.  DIRECTORS' AND OFFICERS' INDEMNIFICATION.  (a) The
Certificate of Incorporation and Bylaws of  the Surviving Corporation shall
contain  provisions no less favorable with  respect to indemnification than
are set forth in Article VIII of the Bylaws of the Target, which provisions
shall not  be amended, repealed or  otherwise modified for a  period of six
(6) years from the Effective Time in any manner that would affect adversely
the rights thereunder of individuals who at any time prior to the Effective
Time  were directors,  officers or employees  of the  Target or  any of its
Subsidiaries, unless such modification shall be required by Delaware Law.  
          (b)  From  and after the Effective  Time and for  a period of six
(6) years thereafter, the Surviving Corporation shall indemnify, defend and
hold harmless each person who is now, or has been at any time prior  to the
date  of this  Agreement or  who becomes  prior to  the Effective  Time, an
officer or director of Target or any of the Subsidiaries, or an employee of
Target  or any  of  the Subsidiaries  who  acts as  a  fiduciary under  any
employee  benefit plans of Target or any of the Subsidiaries (collectively,
the  "Indemnified   Parties")  against  all  losses,   expenses  (including
reasonable attorneys   fees), claims, damages, liabilities  or amounts that
are paid in settlement of,  with the approval of the Surviving  Corporation
(which  approval  shall  not unreasonably  be  withheld),  or otherwise  in
connection  with, any threatened or actual  claim, action, suit, proceeding
or investigation (a "Claim"),  based in whole or  in part on or arising  in
whole or in  part out of the fact that the Indemnified Party (or the Person
controlled by the Indemnified Party) is  or was a director, officer or such
an employee  of Target or  any of  the Subsidiaries and  pertaining to  any
matter existing  or arising  out of actions  or omissions  occurring at  or
prior  to the  Effective  Time (including,  without  limitation, any  Claim
arising  out  of this  Agreement or  any  of the  transactions contemplated
hereby), whether  asserted or claimed prior  to, at or after  the Effective
Time, in each case to the  fullest extent permitted under Delaware Law, and
shall pay any expenses, as incurred, in advance of the final disposition of<PAGE>


any  such action or  proceeding to  each Indemnified  Party to  the fullest
extent  permitted under Delaware Law.   Without limiting  the foregoing, in
the event any such claim is brought against any of the Indemnified Parties,
(i)  such Indemnified Parties may  retain counsel (including local counsel)
satisfactory to them and which shall be reasonably satisfactory to Acquiror
and the Surviving Corporation shall pay all reasonable fees and expenses of
such  counsel  for  such  Indemnified  Parties;  and  (ii)  the   Surviving
Corporation shall use all  reasonable efforts to  assist in the defense  of
any such Claim, provided that the Surviving Corporation shall not be liable
for any settlement  effected without  its written  consent, which  consent,
however, shall not be unreasonably withheld.   The Indemnified Parties as a
group  shall retain only  one law firm (plus  appropriate local counsel) to
represent  them with  respect  to  each  such Claim  unless  there  is,  as
determined  by  counsel  to  the  Indemnified  Parties,  under   applicable
standards of professional conduct, a conflict or a reasonable likelihood of
a conflict on  any significant issue  between the positions  of any two  or
more Indemnified Parties at the expense of the Surviving Corporation. 

          (c)  For a period of six (6) years after the Effective Time,  the
Surviving  Corporation shall cause to  be maintained in  effect the current
policies of  directors  and  officers   liability insurance  maintained  by
Target  and  the Subsidiaries  covering  all of  the  individuals currently
covered  thereby (provided  that the  Surviving Corporation  may substitute
therefor  policies of  at least  the same  coverage and  amounts containing
terms  and conditions which are  no less advantageous  to such officers and
directors)  with respect  to  claims arising  from  facts or  events  which
occurred before  the  Effective  Time;  provided,  however,  the  Surviving
Corporation shall not  be required to  pay premiums  for such insurance  in
excess of $275,000 in the aggregate. 

          SECTION  6.07.  OBLIGATIONS OF ACQUIROR SUB.  Acquiror shall take
all action necessary to cause Acquiror Sub to perform its obligations under
this  Agreement and to  consummate the Merger  on the terms  and subject to
conditions set forth in this Agreement.

          SECTION 6.08.  PUBLIC ANNOUNCEMENTS.  (a) Acquiror and the Target
shall consult with each other before issuing any press release or otherwise
making  any public  statements  with  respect  to  this  Agreement  or  any
Transaction  and shall not  issue any such  press release or  make any such
public statement prior to such consultation and (b) prior  to the Effective
Time, the Target  will not issue any other press  release or otherwise make
any public  statements regarding its business, except as may be required by
Law  or any listing agreement  with the National  Association of Securities
Dealers, Inc. (the "NASD") to which the Target is a party.

          SECTION 6.09.  DELIVERY OF SEC DOCUMENTS.  Each of the Target and
Acquiror shall promptly deliver to the other true and correct copies of any
report, statement  or schedule filed with the SEC subsequent to the date of
this Agreement.

          SECTION 6.10.  ENVIRONMENTAL ASSESSMENT.  The  Target agrees that
Acquiror  may  perform or  have performed  on  its behalf  an environmental
assessment of  its owned  or leased  real property.   The Target  will give
Acquiror and the  officers, directors, employees,  agents, consultants  and
representatives  of Acquiror access to  the owned or  leased real property,
including  without limitation,  access  to enter  upon and  investigate and
collect  air,  surface water,  groundwater and  soil  samples, in  order to<PAGE>


conduct  the  environmental assessment.    The Target  will  cooperate with
Acquiror in  connection with such assessment,  including without limitation
scheduling site visits as necessary to complete the assessment prior to the
Effective Time.  The  environmental assessment conducted by Acquiror  or on
Acquiror's  behalf  shall  be satisfactory  to  Acquiror  in  its sole  and
absolute discretion.

          SECTION 6.11.  NOTIFICATION OF CERTAIN MATTERS.  The Target shall
give prompt  notice to Acquiror, and  Acquiror shall give  prompt notice to
the Target,  of (i)  the occurrence,  or non-occurrence,  of any event  the
occurrence,  or non-occurrence,  of  which would  be  likely to  cause  any
representation  or warranty  contained in  this Agreement  to be  untrue or
inaccurate and (ii) any failure of the Target, Acquiror or Acquiror Sub, as
the  case may  be, to  comply with  or satisfy  any covenant,  condition or
agreement  to  be complied  with or  satisfied  by it  hereunder; provided,
however, that  the delivery  of any  notice pursuant  to this  Section 6.11
shall not limit or otherwise affect the remedies available hereunder to the
party receiving such notice.

          SECTION 6.12.   FURTHER  ACTION.   At any time  and from  time to
time,  each  party  to this  Agreement  agrees,  subject to  the  terms and
conditions  of this  Agreement, to  take such  actions and  to execute  and
deliver  such documents as  may be necessary to  effectuate the purposes of
this Agreement at the earliest practicable time.

          SECTION 6.13.   EMPLOYEE  BENEFITS.  (a)  On or before  March 31,
1996, the  Target shall (i) amend  the Dual Drilling Company  Employees Tax
Deferred/Thrift Savings Plan and  Trust (the "401(k) Plan") to  (A) provide
for the limitation on compensation that may be considered  under the 401(k)
Plan imposed by Section 401(a)(17)  of the Code, as amended by  the Omnibus
Budget Reconciliation Act of 1993, Publ. L. No. 103-66 effective January 1,
1994 and (B) amend the 401(k) Plan to provide clarification that the 401(k)
Plan, as amended and  restated effective January 1, 1991,  also constitutes
an amendment and restatement  of the separate plan documents  governing the
401(k) Plan  and the Dual Drilling Company  Employees Thrift Plan and Trust
that was  merged into the 401(k) Plan effective January 1, 1991 (the "Prior
Thrift Plan") to  the extent required  for both the  401(k) Plan and  Prior
Thrift  Plan to constitute qualified  plans within the  meaning of Sections
401(a)  and  501(a) of  the Code  for their  plan  years 1987  through 1990
(collectively the "401(k) Plan  Amendment"), and (ii) file the  401(k) Plan
Amendment with the Dallas Key District of the Internal Revenue Service  for
the purpose  of entering into a closing agreement with the Internal Revenue
Service  regarding the 401(k) Plan  Amendment pursuant to  Rev. Proc 94-16,
1994-1  C.B. 576,  as  modified by  the  Memorandum from  Internal  Revenue
Service Assistant Commissioner  (Employee Plans  and Exempt  Organizations)
James  McGovern  to  Field  Offices  Outlining  Procedures  for  Processing
Employee  Plans not Amended Timely  Under Tax Reform  Act of 1986, Released
October 26, 1995  (the "Closing Agreement").   Target shall timely  pay any
monetary  sanction assessed by the Internal Revenue Service pursuant to the
Closing Agreement.  Subject to the Target taking the action required by the
two  preceding sentences and the Internal Revenue Service entering into the
Closing  Agreement, Acquiror agrees to (i) assume sponsorship of the 401(k)
Plan  as  of  the  Effective Time,  (ii)  upon  entering  into the  Closing
Agreement, file the 401(k) Plan Amendment with the Internal Revenue Service
for  the  purpose of  obtaining a  determination  letter from  the Internal
Revenue Service  that both the  401(k) Plan and  the Prior Thrift  Plan are
qualified  within the  meaning of Sections  401(a) and  501(a) of  the Code<PAGE>


retroactive to the 1987 plan year  of each plan and (iii) upon issuance  by
the  Internal  Revenue  Service  of  a  favorable  determination letter  as
described in clause (ii) of  this sentence, merge the 401(k) Plan  into the
ENSCO Savings  Plan as  soon  as administratively  practicable  thereafter.
Amounts  payable under  the 401(k)  Plan to  employees whose  employment is
terminated for any reason prior to December 31, 1996 shall be paid promptly
after any such termination and not after  the end of the 1996 plan year  if
requested by the employee and such payment is permitted by the terms of the
401(k) Plan.

     (b)  Effective as of the Effective Time, Acquiror agrees to assume or,
alternatively, cause the Surviving Corporation to assume, the Dual Drilling
Company  Employee Health Benefit Plan  (the "Dual Medical  Plan"), the Dual
Drilling Company Group Life Insurance Plan, the Dual Drilling Company Long-
Term Disability  Plan,  the Dual  Drilling  Company Group  Travel  Accident
Insurance Plan,  the Voluntary Personal Accident Insurance  Plan, the Long-
Term  Disability   Plan  for  Third  Country  Nationals,  and  the  Premium
Conversion  Cafeteria Plan unless any such  plan has been terminated by the
Target as directed by  Acquiror prior to the Effective  Time (collectively,
the  "Group  Insurance  Plans").   Acquiror  agrees  to  provide to  former
employees  of the Target and its Subsidiaries  under the plans continued or
to  be established  by Acquiror  continuation group  health  coverage under
Section  4980B  of the  Code  and  Sections 601  to  608  of ERISA  ("COBRA
Coverage") for  any  individuals receiving  COBRA Coverage  under the  Dual
Medical Plan as of  the Effective Time and for any  employees of the Target
and its Subsidiaries and their dependents who become eligible for and elect
COBRA  Coverage as  a  result  of  the  Transactions  contemplated  by  the
Agreement;  provided,  however,  nothing  contained  herein  shall obligate
Acquiror to extend COBRA Coverage beyond its normal expiration  period.  As
soon as practicable after the Effective Time, the Target shall transfer  to
Acquiror or, if  directed by  Acquiror, to the  Surviving Corporation,  any
assets,  including  any  insurance  policies,  held  by  the  Target  or  a
Subsidiary  supporting the payment  of benefits  under the  Group Insurance
Plans.   Acquiror and the Target agree  that Acquiror may direct the Target
to take such  action as Acquiror  deems appropriate to terminate  any Group
Insurance Plan conditioned upon  the occurrence of and as  of the Effective
Time, liquidate the assets of any trust or funding arrangement for any such
plan and settle all claims for benefits under any such plan.

     (c)  Effective as of  the Effective  Time, the Target  shall take  all
such action necessary (i) to amend the terms of the post-retirement medical
coverage provided by the Target  under the Dual Medical Plan  (the "Retiree
Medical Plan") to provide that no employee of the Target or any Subsidiary,
or any beneficiary  or dependent of any such employee,  may become entitled
to post-retirement medical coverage under the Retiree Medical Plan due to a
retirement  or other termination of employment after the Effective Time and
(ii) to terminate the Retiree Medical  Plan.  Effective as of the Effective
Time, Acquiror agrees to provide post-retirement medical coverage under the
ENSCO  Medical Plan to any former employee  of the Target or any Subsidiary
who  as of the Effective Time is receiving post-retirement medical coverage
under the Retiree Medical Plan, provided that such coverage under the ENSCO
Medical Plan  shall be on the  same terms and conditions  and shall provide
the same benefits  as currently  available to retired  former employees  of
Acquiror under  the ENSCO Medical Plan,  but without regard to  the age and
service  provisions  of  the  ENSCO  Medical Plan  that  determine  initial
eligibility for post-retirement medical coverage and without regard  to any
preexisting condition limitations contained in the ENSCO Medical Plan.  Any<PAGE>


employee  of the  Target or  any Subsidiary  who is  not entitled  to post-
retirement  medical coverage  under  the Retiree  Medical  Plan as  of  the
Effective  Time will be eligible for post-retirement medical coverage under
the  ENSCO Medical Plan only if the  terms and conditions for such coverage
under the ENSCO Medical Plan are satisfied.

     (d)  Effective as of  the day  before the Effective  Time, the  Target
shall take  all such action  necessary (i) to  amend the provisions  of the
Dual Drilling  Company Supplemental Executive Retirement  Plan (the "SERP")
to freeze all benefits under  the SERP as of  the day before the  Effective
Time and to  permit Acquiror or the Surviving Corporation,  as successor to
the  Target's rights under the  SERP, to distribute  the determined benefit
under the SERP payable to each participant covered by the SERP  in one lump
sum payment in the sole discretion  of Acquiror at any time from and  after
January 1, 1997,  (ii) to determine the benefits payable thereunder to each
participant, and (iii) to terminate the SERP effective as of the day before
the Effective Time.

     (e)  Effective as of  the day  before the Effective  Time, the  Target
shall take  all such action  necessary (i) to  amend the provisions  of the
Dual Drilling Company  Benefit Restoration Plan  (the "Benefit  Restoration
Plan") to freeze  all benefits under the Benefit Restoration  Plan, (ii) to
determine the benefits payable thereunder to each participant, and (iii) to
terminate the  Benefit Restoration Plan effective as  of the day before the
Effective Time.

     (f)  To  facilitate  the   payment  of  benefits   from  the   Benefit
Restoration Plan and, if directed by Acquiror  to facilitate the payment of
benefits under  the SERP, the  Target shall take all  such action necessary
(i) to provide a schedule of benefits payable under the Benefit Restoration
Plan and,  if applicable, the  SERP, to the  Trust Company of Texas  in its
capacity as trustee (the "Trustee") of the Umbrella Trust evidenced by that
certain Trust Agreement dated October 1,  1994 by and between Dual Drilling
Company and  Trust  Company of  Texas  (the "Trust"),  (ii) to  direct  the
Trustee  to make  payment from  the  assets of  the Trust  of all  benefits
payable under  the Benefit Restoration Plan or the SERP, and (iii) to cause
the Trustee  to liquidate  the assets  of the  Trust,  except as  otherwise
determined  by Acquiror, provided that such actions are consistent with the
terms of the SERP, Benefit Restoration Plan and Trust, each as amended.

     (g)  Effective as of  the day  before the Effective  Time, the  Target
shall  take all  such action  necessary to  freeze  all benefits  under the
Discontinued Executive and Manager Team Incentive Program ("Team  Incentive
Program")  maintained by  the  Target and  Acquiror  agrees to  assume  the
benefit  payment obligations of the  Target under the  Team Incentive Plan,
and  after all  such benefit payments  have been  made, the  Team Incentive
Program  shall  be deemed  terminated and  Acquiror  shall take  such other
action as it deems appropriate to accomplish such termination.

     (h)  Effective as  of the  Effective Time,  Acquiror shall  assume the
Dual Drilling Company  Severance Pay  Plan for Office  Employees, the  Dual
Drilling Company Severance  Pay Plan  for Key Operating  and Support  Staff
Employees  and the  Dual  Drilling  Company  Severance  Pay  Plan  for  Key
Operating  and Engineering Managers  (collectively, the "Employee Severance
Plans"),  provided that  Acquiror shall  not be  obligated to  continue the
Employee Severance Plans for any specified period of time.<PAGE>


     (i)  Effective as of  the day  before the Effective  Time, the  Target
shall take  all such  action  necessary to  freeze all  benefits under  the
Employee Incentive  Plan, the  Safety Bonus Plan,  and the  Pro-Performance
Bonus Plan for  Toolpushers maintained by the Target and Acquiror agrees to
assume the benefit  payment obligations of the Target under  such plans and
cause such payments to be made after the Effective Time, and after all such
payments have been made, the plans shall be deemed  terminated and Acquiror
shall  take such other  action as it  deems appropriate to  accomplish such
termination.

     (j)   Acquiror agrees to assume the benefit payment obligations of the
Target under the Dual  Special Performance Unit Plan, effective  August 21,
1995  (as amended,  the  Dual Unit  Plan ),   maintained by  the Target and
cause such payments to be made, and after all such payments have been made,
the Dual  Unit Plan shall be deemed terminated and Acquiror shall take such
other  action as  it  deems  appropriate  to accomplish  such  termination.
Target agrees that the  aggregate amount of the Performance Bonus  Pool (as
defined in the Dual Unit Plan) plus  the amount payable to David W.  Skarke
as a performance bonus  calculated based on  the amount of the  Performance
Bonus Pool  pursuant to that certain letter agreement dated October 2, 1995
(the "Letter Agreement") shall be  $2,000,000.  The Target shall take   all
required actions prior to the Effective Time to amend the terms of the Dual
Unit  Plan and the  Letter Agreement so that  the aggregate amounts payable
thereunder shall be $2,000,000. 

     (k)  The  Target agrees to terminate  the Annual Incentive  Plan as of
the date of the commencement of such plan and accordingly no benefits shall
accrue thereunder.

     (l)  Nothing in this Section 6.13 is intended or shall be construed to
limit  Acquiror's right to modify, change, terminate or otherwise alter any
of the  provisions of, or benefits  provided under, any new  plans or plans
established by  Acquiror or the plans  described in this Section  6.13 that
are  assumed by Acquiror  or the  Surviving Corporation,  or to  create any
vested rights for participants in the benefits provided under such plans.

     (m)  Prior  to  the Effective  Time, the  Target  shall file  with the
Internal Revenue Service, all Annual Reports, Form 5500, and the applicable
Schedule F,  required to be filed  under Section 6039(d) of  the Code, with
respect  to the Premium Conversion Cafeteria  Plan for each plan year since
the inception of the Premium Conversion Cafeteria Plan.

     (n)  Prior  to the Effective Time,  the Target shall,  pursuant to the
requirements of the Delinquent Filer Voluntary Compliance Program described
in the Department of Labor  ("DOL") Notice published in 59 Fed.  Reg. 20873
(April  27,  1995), as  a  condition of  relief  from the  annual reporting
requirements, (i) elect to  file the one-time statement required  under DOL
Reg. section  2520-104-23 with respect to  (A) the SERP and  (B) the Target
Employment  Contracts applicable to L.H. Dick Robertson, W. Allen Parks and
Dudley  M. Haralson, (ii)  file with  the DOL, the  first page  of the Form
5500, Annual Report, with the applicable items completed, (iii)  pay to the
DOL the Two  Thousand Five  Hundred Dollar ($2,500)  penalty applicable  to
such Form 5500 filings, and (iv)  file with the DOL the applicable one-time
statements required with  respect to  the SERP and  such Target  Employment
Contracts.<PAGE>


     (o)  All of the  employment agreements listed  on Schedule 6.13(o)  of
the Target Disclosure  Schedule will be terminated by the  Target as of the
Effective  Time.  Notwithstanding   the  foregoing,   Acquiror  may   offer
employment prior to  the Effective Time to persons who have such employment
agreements and the  terms of such employment, if accepted  by such employee
of  the Target,  may  affect  the  Target's  obligations  to  the  affected
employee.

          SECTION 6.14.   AFFILIATES;  ACCOUNTING AND  TAX TREATMENT.   (a)
     Section 6.14 of  the Target  Disclosure Schedule lists  the names  and
addresses  of those persons who  are, in the  Target's reasonable judgment,
"affiliates" of  the  Target within  the  meaning  of Rule  145  under  the
Securities  Act (each,  a "Target Affiliate").   The  Target shall  use all
commercially reasonable efforts to obtain  Affiliate Agreements in the form
of  EXHIBIT B  hereto ("Affiliate  Agreements") from  (i) at least  30 days
prior   to  the  Effective  Time,  each  of  the  officers,  directors  and
stockholders (other than Dual Invest AS) of the Target specified in Section
6.14  of the  Target Disclosure  Schedule and  (ii) any  person who  may be
deemed to  have become an affiliate of the Target (under Rule 145 under the
Securities Act)  after the date  of this Agreement and  on or prior  to the
Effective Time as soon as  practicable after the date on which  such person
attains such status.  Each party hereto shall use its best efforts to cause
the Merger to qualify, and shall not take any  actions which would (or fail
to  take any actions  the failure of  which would) prevent  the Merger from
qualifying, as a reorganization qualifying under the provisions of  Section
368(a)  of the  Code, including,  without limitation, that  Acquiror agrees
that it will cause Target, in its new capacity as a subsidiary of Acquiror,
to (i) continue the  Target s historic business and (ii) use  a significant
portion of its historic business assets in such business.
 
     (b)  The Target shall provide  to Acquiror for inclusion in  the Proxy
Statement a written opinion  from Akin, Gump, Strauss, Hauer & Feld, L.L.P.
dated  as  of the  date  that  the  Proxy  Statement  is  first  mailed  to
stockholders of  the Target  to  the effect  that (i)  the  Merger will  be
treated for U.S. federal income tax purposes as a reorganization within the
meaning of  Section 368(a) of the Code; (ii) Acquiror, Acquiror Sub and the
Target will  each be a party  to that reorganization within  the meaning of
Section 368(b) of the Code; and  (iii) the stockholders of the Target shall
not recognize  any gain or loss for  U.S. federal income tax  purposes as a
result of  the Merger, other  than to the extent  such stockholders receive
cash in lieu of fractional shares.

     SECTION 6.15.  CERTAIN  EMPLOYEES.  The Target agrees to terminate the
employment of  any executive officer (as  that term is defined  in Rule 405
promulgated under the Exchange Act) of the Target identified by Acquiror at
least  one day  prior to the  Effective Time.   Such  termination shall not
adversely affect  any Long-Term Options,  severance or other  benefits such
executive officers shall be entitled to receive.

                                ARTICLE VII

                          CONDITIONS TO THE MERGER

          SECTION 7.01.  CONDITIONS  TO THE OBLIGATIONS OF EACH PARTY.  The
obligations  of the  Target, Acquiror  and Acquiror  Sub to  consummate the
Merger are subject to the satisfaction of the following conditions:<PAGE>


          (a)  this  Agreement and  the  Transactions  contemplated  hereby
     shall have been  approved and adopted  by the affirmative vote  of the
     stockholders of the  Target in  accordance with Delaware  Law and  the
     Target's  Certificate of Incorporation and Bylaws and the rules of the
     NASD;

          (b)  no   Governmental  Authority  shall  have  enacted,  issued,
     promulgated,  enforced or  entered any  order, executive  order, stay,
     decree, judgment  or injunction (each  an"Order") or statute,  rule or
     regulation  which is in effect and which  has the effect of making the
     Merger illegal or otherwise prohibiting consummation of the Merger;

          (c)  the   Registration  Statement   shall  have   been  declared
     effective,  and no  stop  order suspending  the  effectiveness of  the
     Registration Statement shall be in effect; 

          (d)  Acquiror and  the Target shall  have received from  the NYSE
     evidence that  the shares of Acquiror Common Stock to be issued to the
     stockholders  of the Target in the Merger  shall be listed on the NYSE
     immediately following the Effective Time; and

          (e)  any applicable waiting  period under the HSR Act relating to
     the Merger shall have expired or been terminated.

          SECTION 7.02.   CONDITIONS  TO  THE OBLIGATIONS  OF ACQUIROR  AND
ACQUIROR SUB.  The obligations of  Acquiror and Acquiror Sub to  consummate
the  Merger  are  subject to  the  satisfaction  of  the following  further
conditions:

          (a)  the  Target shall have performed or complied in all material
     respects with all  agreements and covenants required by this Agreement
     to be  performed or complied with  by it at or prior  to the Effective
     Time  and each  of the  representations and  warranties of  the Target
     contained in this Agreement shall be true and  correct in all material
     respects  as of the  Effective Time as  though made  on and as  of the
     Effective Time, except that those representations and warranties which
     address matters  only as  of a particular  date shall remain  true and
     correct as of such date and Acquiror shall have received a certificate
     of an executive officer of the Target to that effect;

          (b)  Acquiror shall have received from each Target Affiliate  and
     any other person who may be deemed to have become an affiliate of  the
     Target (under Rule  145 under  the Securities Act)  after the date  of
     this  Agreement  and at  or  prior  to  the  Effective Time  a  signed
     Affiliate Agreement;

          (c)  since the date of this Agreement, no material adverse change
     in the financial condition,  results of operations or business  of the
     Target  and the Subsidiaries, taken  as a whole,  shall have occurred,
     and  neither the  Target nor  any Subsidiary  shall have  suffered any
     damage,  destruction  or loss  materially  affecting  the business  or
     properties of the Target and the Subsidiaries, taken as a whole;

          (d)  the  Target  and each  Subsidiary  shall  have delivered  to
     Acquiror,  each dated as of a date  not earlier than thirty days prior
     to the Effective Time, (i) copies of the certificates of incorporation
     or other  organizational documents, including all  amendments thereto,<PAGE>


     certified by the  appropriate government official,  of the Target  and
     each  Subsidiary, (ii)  to  the extent  issued  by such  jurisdiction,
     certificates from the appropriate governmental official to the  effect
     that   Target  and  each  Subsidiary  is  in  good  standing  in  such
     jurisdiction and listing  all organizational documents  of Target  and
     each   Subsidiary  on  file,  (iii)  to  the  extent  issued  by  such
     jurisdiction, a certificate from the appropriate governmental official
     in  each jurisdiction  in  which the  Target  and each  Subsidiary  is
     qualified  to do business  to the effect  that such member  is in good
     standing  in  such jurisdiction,  (iv) to  the  extent issued  by such
     jurisdiction, certificates indicating  all taxes are  current for  the
     Target and  each Subsidiary  in its jurisdiction  of organization  and
     each  jurisdiction  in  which  such  member  is  qualified  to  do  or
     conducting business,  (v) to the  extent issued by  such jurisdiction,
     certificates from the appropriate governmental official to the  effect
     that  each Target  Drilling  Rig   is documented  and  flagged in  the
     jurisdiction described  in  Section  3.28  of  the  Target  Disclosure
     Schedule,  and  (vi)  Confirmation  of  Class  Certificates  from  the
     American  Bureau  of  Shipping  indicating  that each  of  the  Target
     Drilling Rigs that is  a jack-up drilling rig is in  class and free of
     any recommendations; and 

          (e)  Acquiror shall have received from Akin, Gump, Strauss, Hauer
     &  Feld, L.L.P., a written opinion dated as of the date of the Closing
     covering the  matters  set  forth on  EXHIBIT  C hereto  in  form  and
     substance reasonably acceptable to counsel for Acquiror. 

          SECTION 7.03.  CONDITIONS TO THE OBLIGATIONS  OF THE TARGET.  The
obligations of the Target to consummate the Merger are  subject are subject
to the satisfaction of the following further conditions:

          (a)  Acquiror and  Acquiror Sub shall have  performed or complied
     in all material respects with all agreements and covenants required by
     this Agreement to be performed or complied with by them at or prior to
     the Effective Time and  each of the representations and  warranties of
     Acquiror  and Acquiror Sub contained  in this Agreement  shall be true
     and  correct in  all material  respects as  of the Effective  Time, as
     though  made on  and  as  of the  Effective  Time,  except that  those
     representations  and warranties  which address  matters  only as  of a
     particular date shall remain true and correct as of such  date and the
     Target  shall have received a  certificate of an  executive officer of
     Acquiror to that effect;

          (b)  since the date of this Agreement, no material adverse change
     in  the financial  condition,  results of  operations  or business  of
     Acquiror and the Acquiror  Subsidiaries, taken as a whole,  shall have
     occurred, and  Acquiror and the  Acquiror Subsidiaries shall  not have
     suffered any  damage, destruction  or  loss materially  affecting  the
     business or  properties of  Acquiror  and the  Acquiror  Subsidiaries,
     taken as a whole; and

          (c)  the  Target  shall have  received  from Baker  &  McKenzie a
     written  opinion dated  as of  the date  of  the Closing  covering the
     matters set forth on EXHIBIT D hereto in form and substance reasonably
     acceptable to counsel for the Target.

                                ARTICLE VIII<PAGE>


                     TERMINATION, AMENDMENT AND WAIVER

          SECTION 8.01.  TERMINATION.  This Agreement may be terminated and
the Merger and the other Transactions may be abandoned at any time prior to
the Effective Time, notwithstanding any  requisite approval and adoption of
this Agreement and the Transactions, as follows:

          (a)  by mutual written consent  duly authorized by the Boards  of
     Directors of each of Acquiror, Acquiror Sub and the Target;

          (b)  by  either  Acquiror  or  the  Target,  if  either  (i)  the
     Effective  Time shall not  have occurred on  or before  July 31, 1996;
     provided, however, that  the right to  terminate this Agreement  under
     this Section 8.01(b) shall not be available to any party whose failure
     to fulfill any  obligation under this Agreement has been the cause of,
     or  resulted in,  the failure  of the  Effective Time  to occur  on or
     before such date; or (ii)  there shall be any Order which is final and
     nonappealable preventing the consummation of the Merger, except if the
     party  relying on  such Order  has not  complied with  its obligations
     under Section 6.03(a); 

          (c)  by Acquiror, if a tender offer  or exchange offer for 50% or
     more of  the  outstanding shares  of capital  stock of  the Target  is
     commenced, and the Board of Directors of the Target fails to recommend
     against  the stockholders  of the Target  tendering their  shares into
     such tender offer or exchange offer;

          (d)  by Acquiror, if  the stockholders of  the Target shall  have
     failed  to  approve and  adopt this  Agreement,  the Merger  and other
     Transactions at a meeting duly convened therefor;

          (e)  by Acquiror, upon a breach of any representation,  warranty,
     covenant or  agreement on the  part of  the Target set  forth in  this
     Agreement,  or if any representation  or warranty of  the Target shall
     have become untrue, in either case such that the conditions  set forth
     in  Section 7.02(a)  would  not be  satisfied  (a "Terminating  Target
     Breach"); provided,  however, that, if such  Terminating Target Breach
     is curable by the Target through  the exercise of its best efforts and
     for so long  as the Target  continues to  exercise such best  efforts,
     Acquiror may not  terminate this Agreement under this Section 8.01(e);
     or

          (f)  by the Target, upon breach of any representation,  warranty,
     covenant  or agreement  on  the part  of Acquiror  set  forth in  this
     Agreement, or if any representation or warranty of Acquiror shall have
     become untrue, in  either case such  that the conditions set  forth in
     Section 7.03  would not be satisfied  ("Terminating Acquiror Breach");
     provided, however,  that,  if  such  Terminating  Acquiror  Breach  is
     curable by Acquiror  through best efforts and for so  long as Acquiror
     continues  to exercise such best efforts, the Target may not terminate
     this Agreement under this Section 8.01(f).

          SECTION 8.02.   FEES  AND EXPENSES.   (a)   The Target  shall pay
Acquiror  a fee (an "Alternative Proposal Fee") of $5,000,000, which amount
is inclusive of all of Specified Expenses (as hereinafter defined), if:

          (i)  this Agreement is terminated pursuant to Section 8.01(c); or<PAGE>


          (ii) this Agreement is terminated pursuant to Section 8.01(d)  as
     a result of  the failure of the stockholders of  the Target to approve
     the  Merger and a Business Combination Transaction Proposal shall have
     been  made prior  to such  termination, and  any  Business Combination
     Transaction  is  thereafter  consummated  within  12  months  of  such
     termination.

As  used herein, the term "Business Combination Transaction" shall mean any
of  the following  involving the  Target:   (1) any  merger, consolidation,
share exchange, business  combination or other  similar transaction  (other
than  the Transactions); (2) any  sale, lease, exchange,  transfer or other
disposition (other than a pledge or mortgage)  of 25% or more of the assets
of  the Target  and  the  Subsidiaries,  taken  as a  whole,  in  a  single
transaction or series of  transactions; or (3) the acquisition  by a person
or entity or any  "group" (as such term  is defined under Section  13(d) of
the  Exchange Act and the  rules and regulations  thereunder) of beneficial
ownership of 33 1/3% or  more of the shares of Target Common Stock, whether
by tender offer, exchange offer or otherwise. 

          (b)  Acquiror shall be entitled to receive its Specified Expenses
(but  not the Alternative Proposal  Fee) in immediately  available funds in
the event that  this Agreement  is terminated pursuant  to Section  8.01(b)
(subject to  the  proviso thereof)  or Section  8.01(e).   Target shall  be
entitled to receive its Specified  Expenses in immediately available  funds
in the event that this Agreement is terminated pursuant to Section 8.01(f).

          (c)  In  the  event of  termination  of  this Agreement  and  the
abandonment of the Merger pursuant to Section  8.01, all obligations of the
parties hereto  shall  terminate  except  the obligations  of  the  parties
pursuant to this Section  8.02 and Sections  8.03, 8.04, 9.02, 9.03,  9.04,
9.05, 9.06, 9.07, 9.08,  9.10 and 9.11 and pursuant  to the Confidentiality
Agreement.  No termination of this Agreement pursuant to Section 8.01(e) or
8.01(f) shall prejudice the  ability of a non-breaching party  from seeking
damages from any other party  for any breach of this Agreement,  including,
without limitation,  attorneys' fees and the right  to pursue any remedy at
law or in equity.   Notwithstanding the foregoing, if  Acquiror is required
to file suit to seek the Alternative Proposal Fee or either Acquiror or the
Target is  required to  file suit  to seek its  Specified Expenses,  and it
ultimately succeeds on  the merits, it shall  be entitled to all  expenses,
including  attorneys' fees, which it  has incurred in  enforcing its rights
under this Section 8.02.

          (d)  As used herein, "Specified Expenses" means all out-of-pocket
expenses and fees actually incurred or accrued by a Person or on its behalf
in  connection with  the  Transactions prior  to  the termination  of  this
Agreement (including, without limitation, all fees and expenses of counsel,
financial advisors,  banks or other  entities providing  financing to  such
Person (including financing,  commitment and other  fees payable  thereto),
accountants, environmental and other experts and consultants to such Person
and  its  affiliates, and  all printing  and  advertising expenses)  and in
connection  with the  negotiation, preparation, execution,  performance and
termination  of this  Agreement, the structuring  of the  Transactions, any
agreements  relating thereto  and  any filings  to  be made  in  connection
therewith.<PAGE>


          (e)  The  Target agrees that from and after the Effective Time it
shall  reimburse Acquiror for all out-of-pocket  expenses and fees actually
incurred or accrued by Acquiror in connection with the Transaction.

          (f)  Except  as set forth in  this Section and  Section 6.01, all
costs  and  expenses incurred  in connection  with  this Agreement  and the
Transactions shall be paid by the party incurring such expenses, whether or
not any Transaction is consummated.  

          SECTION  8.03.  AMENDMENT.  This Agreement  may be amended by the
parties hereto by  action taken by or on behalf  of their respective Boards
of  Directors at any  time prior to the  Effective Time; provided, however,
that,  after  the  approval   and  adoption  of  this  Agreement   and  the
Transactions  by the stockholders of  the Target, no  amendment may be made
which would violate Delaware Law.  This Agreement may not be amended except
by an instrument in writing signed by the parties hereto.

          SECTION 8.04.   WAIVER.  At any time prior to the Effective Time,
any  party  hereto may  (a)  extend the  time  for the  performance  of any
obligation or other act of any other party hereto, (b) waive any inaccuracy
in the representations and  warranties contained herein or in  any document
delivered  pursuant hereto and (c)  waive compliance with  any agreement or
condition  contained herein.   Any such extension or  waiver shall be valid
only  if set  forth in  an instrument  in  writing signed  by the  party or
parties to be bound thereby.


                                 ARTICLE IX

                             GENERAL PROVISIONS

          SECTION 9.01.   NON-SURVIVAL  OF REPRESENTATIONS, WARRANTIES  AND
AGREEMENTS.    The  representations,  warranties  and  agreements  in  this
Agreement and any certificate delivered pursuant hereto by any person shall
terminate at the  Effective Time, except  that the agreements set  forth in
Articles I  and II and Sections  6.06 and 6.07 shall  survive the Effective
Time indefinitely.

          SECTION 9.02.   NOTICES.  All notices, requests,  claims, demands
and  other communications hereunder shall be  in writing and shall be given
(and shall be deemed to  have been duly given upon receipt)  by delivery in
person,  by cable,  facsimile,  telegram  or  telex  or  by  registered  or
certified  mail   (postage  prepaid,  return  receipt   requested)  to  the
respective parties at the following addresses (or at such other address for
a party as shall  be specified in  a notice given  in accordance with  this
Section 9.02):<PAGE>


          if to Acquiror or Acquiror Sub:

          ENSCO International Incorporated
          1445 Ross Avenue, Suite 2700
          Dallas, Texas 75202
          Attention: C. Christopher Gaut
          Facsimile: 214/855-0300

          with a copy to:

          Daniel W. Rabun 
          Baker & McKenzie
          2001 Ross Avenue
          4500 Trammell Crow Center
          Dallas, Texas 75201
          Facsimile: 214/978-3096/99

          if to the Target:

          DUAL DRILLING COMPANY
          5956 Sherry Lane, Suite 1500
          Dallas, Texas 75225
          Attention:   David W. Skarke
          Facsimile: 214/373-0533

          with a copy to:

          David S. Peterman
          Akin, Gump, Strauss, Hauer & Feld, L.L.P.
          7900 Pennzoil Place - South Tower
          711 Louisiana Street
          Houston, Texas 77002
          Facsimile: 713/236-0823


          SECTION  9.03.    CERTAIN  DEFINITIONS.   For  purposes  of  this
Agreement, the term:

          (a)  "affiliate" of  a  specified  person  means  a  person  who,
     directly or indirectly, through one or more intermediaries,  controls,
     is  controlled by,  or is  under common  control with,  such specified
     person;

          (b)  "beneficial owner" with respect to any shares means a person
     who shall  be deemed to  be the  beneficial owner of  such shares  (i)
     which such person or any of its affiliates or associates (as such term
     is  defined  in  Rule  12b-2  promulgated  under  the   Exchange  Act)
     beneficially owns, directly  or indirectly, (ii) which such  person or
     any of its affiliates  or associates has, directly or  indirectly, (A)
     the right to acquire (whether such right is exercisable immediately or
     subject  only  to the  passage of  time),  pursuant to  any agreement,
     arrangement  or understanding  or upon  the exercise  of consideration
     rights, exchange rights, warrants or options, or otherwise, or (B) the
     right to vote pursuant to any agreement, arrangement or understanding,
     (iii) which are  beneficially owned,  directly or  indirectly, by  any
     other persons  with  whom such  person  or any  of its  affiliates  or
     associates  or  any  person  with  whom  such  person  or  any of  its<PAGE>


     affiliates   or  associates   has   any   agreement,  arrangement   or
     understanding  for  the  purpose  of  acquiring,  holding,  voting  or
     disposing of any such shares, or (iv) pursuant to Section 13(d) of the
     Exchange Act and any rules or regulations promulgated thereunder;

          (c)  "business day" means any day on which  the principal offices
     of the SEC in Washington, D.C. are  open to accept filings, or, in the
     case of  determining a date when any payment is  due, any day on which
     banks  are not required  or authorized to  close in the  New York, New
     York;

          (d)  "control"  (including the terms  "controlled by"  and "under
     common control with")  means the possession, directly or indirectly or
     as trustee or executor, of the  power to direct or cause the direction
     of  the management  and  policies of  a  person, whether  through  the
     ownership of voting securities, as trustee or executor, by contract or
     credit arrangement or otherwise; 

          (e)  "person"  means  an  individual,  corporation,  partnership,
     limited partnership, syndicate, person (including, without limitation,
     a "person" as defined in Section 13(d)(3) of the Exchange Act), trust,
     association or entity or government, political subdivision, agency  or
     instrumentality of a government; and

          (f)  "subsidiary"  or "subsidiaries"  of  any  person  means  any
     corporation, partnership, joint venture or other legal entity of which
     such  person (either  alone  or through  or  together with  any  other
     subsidiary), owns or  has rights to  acquire, directly or  indirectly,
     more than 50% (or 49% in the  case of Sime-Dual) of the stock or other
     equity interests the holders  of which are generally entitled  to vote
     for the election of the board of directors or other  governing body of
     such corporation or other legal entity.

          SECTION 9.04.  SEVERABILITY.   If any term or other provision  of
this Agreement is  invalid, illegal or  incapable of being enforced  by any
rule of  Law, or public policy, all other conditions and provisions of this
Agreement shall nevertheless remain in full force and effect so long as the
economic or  legal substance  of the  Transactions is  not affected  in any
manner materially adverse to  any party.  Upon such determination  that any
term or other provision is invalid, illegal or incapable of being enforced,
the parties hereto  shall negotiate in good faith  to modify this Agreement
so as to  effect the original intent of the parties  as closely as possible
in  a  mutually  acceptable  manner  in  order  that  the  Transactions  be
consummated as originally contemplated to the fullest extent possible.

          SECTION 9.05.  ASSIGNMENT; BINDING EFFECT; BENEFIT.  Neither this
Agreement nor any of  the rights, interests or obligations  hereunder shall
be assigned by any  of the parties hereto  (whether by operation of law  or
otherwise) without the prior written consent of the other parties.  Subject
to the preceding sentence,  this Agreement shall be binding upon  and shall
inure to the benefit of the parties hereto and  their respective successors
and assigns.  Notwithstanding  anything contained in this Agreement  to the
contrary,  except  for  the provisions  of  Article  II  and Sections  6.06
(collectively, the "Third  Party Provisions"), nothing  in this  Agreement,
expressed or  implied, is intended to  confer on any person  other than the
parties  hereto or  their  respective successors  and  assigns any  rights,
remedies, obligations or liabilities under or by reason of this Agreement. <PAGE>


          SECTION 9.06.  INCORPORATION OF SCHEDULES.  The Target Disclosure
Schedule and the Acquiror Disclosure Schedule referred to herein and signed
for identification by the parties hereto are hereby incorporated herein and
made a part hereof for all purposes as if fully set forth herein.

          SECTION  9.07.  SPECIFIC  PERFORMANCE.  The  parties hereto agree
that irreparable  damage would occur  in the  event any  provision of  this
Agreement was not performed  in accordance with  the terms hereof and  that
the parties  shall be entitled to specific performance of the terms hereof,
in addition to any other remedy at law or equity.

          SECTION 9.08.  GOVERNING LAW.  EXCEPT TO THE EXTENT THAT DELAWARE
LAW  IS  MANDATORILY  APPLICABLE  TO  THE  MERGER  AND  THE  RIGHTS OF  THE
STOCKHOLDERS  OF THE  TARGET  AND ACQUIROR  SUB,  THIS AGREEMENT  SHALL  BE
GOVERNED  BY, AND CONSTRUED  IN ACCORDANCE WITH,  THE LAWS OF  THE STATE OF
TEXAS WITHOUT REGARD TO THE RULES OF CONFLICTS OF LAW THEREOF.  ALL ACTIONS
AND PROCEEDINGS ARISING OUT OF OR RELATING TO THIS AGREEMENT SHALL BE HEARD
AND DETERMINED IN ANY COURT SITTING IN THE CITY OF DALLAS, TEXAS.
     
          SECTION  9.09.  HEADINGS.  The  descriptive headings contained in
this Agreement are included for convenience of reference only and shall not
affect in any way the meaning or interpretation of this Agreement.

          SECTION  9.10.  COUNTERPARTS.  This Agreement may be executed and
delivered  (including   by  facsimile   transmission)   in  one   or   more
counterparts, and by the different parties hereto in separate counterparts,
each of which when executed and delivered shall be deemed to be an original
but  all  of  which  taken  together  shall constitute  one  and  the  same
agreement.

          SECTION  9.11.   WAIVER OF  JURY TRIAL.    Each of  Acquiror, the
Target and Acquiror  Sub hereby  irrevocably waives all  right to trial  by
jury  in any action, proceeding or counterclaim (whether based on contract,
tort  or otherwise)  arising out of  or relating  to this  Agreement or the
actions  of  Acquiror,  the Target  or  Acquiror  Sub  in the  negotiation,
administration, performance and enforcement thereof.

          SECTION  9.12.   ENTIRE  AGREEMENT.   This Agreement,  the Target
Disclosure Schedule,  the Acquiror Disclosure Schedule, the confidentiality
agreement,  dated  November  2,  1995,  (the "Confidentiality  Agreement"),
between  the  Target and  Acquiror,  the  confidentiality agreement,  dated
February  5, 1996,  between  the Target  and  Acquiror, and  any  documents
delivered  by  the parties  in  connection herewith  constitute  the entire
agreement among the  parties with respect to the subject  matter hereof and
supersede all  prior agreements and  understandings among the  parties with
respect  thereto.  No addition to or  modification of any provision of this
Agreement shall be binding upon any party hereto unless made in writing and
signed by all parties hereto.<PAGE>




          IN  WITNESS WHEREOF, Acquiror,  Acquiror Sub and  the Target have
caused this Agreement to be  executed as of the date first written above by
their respective officers thereunto duly authorized.


                              ENSCO INTERNATIONAL INCORPORATED

                              By /s/ C. Christopher Gaut
                                --------------------------------------
                                C. Christopher Gaut,Vice President and 
                                Chief Financial Officer


                              DDC ACQUISITION COMPANY

                              By /s/ C. Christopher Gaut
                                -------------------------------------
                                C. Christopher Gaut, President


                              DUAL DRILLING COMPANY

                              By /s/ David W. Starke
                                -------------------------------------
                                David W. Skarke, Chairman<PAGE>


                                 EXHIBIT A


                        CERTIFICATE OF INCORPORATION
                                     OF
                          DDC Acquisition Company



                                 ARTICLE I

     The  name  of   the  corporation  is  DDC  Acquisition   Company  (the
"Corporation").


                                 ARTICLE II

     The address of  the Corporation's  registered office in  the State  of
Delaware is Corporation Trust  Center, 1209 Orange Street,  Wilmington, New
Castle County,  Delaware 19801.  The  name of its registered  agent at such
address is The Corporation Trust Company.


                                ARTICLE III

     The  purpose of  the Corporation  is to  engage in  any lawful  act or
activity  for  which  corporations  may  be  organized  under  the  General
Corporation Law of the State of Delaware.


                                 ARTICLE IV

     The total number  of shares of stock which the  Corporation shall have
the authority to issue is Ten Thousand (10,000) shares of Common Stock, par
value $0.10 per share.


                                 ARTICLE V

     The name and mailing address of the incorporator is as follows:

     NAME                          MAILING ADDRESS
     ----                          ---------------

     Albert G. McGrath, Jr.        2700 Fountain Place
                                   1445 Ross Avenue
                                   Dallas, Texas  75202


                                 ARTICLE VI

     The  powers of the  incorporator are to  terminate upon the  filing of
this certificate  of incorporation, and the name and mailing address of the
persons who are to serve  as the board of directors until  the first annual
meeting  of  the stockholders  or until  their  successors are  elected and
qualified are as follows:<PAGE>


     NAMES OF DIRECTORS            MAILING ADDRESS
     ------------------            ---------------

     William S. Chadwick, Jr.      2700 Fountain Place
                                   1445 Ross Avenue
                                   Dallas, Texas  75202

     C. Christopher Gaut           2700 Fountain Place
                                   1445 Ross Avenue
                                   Dallas, Texas  75202

     H. E. Malone                  2700 Fountain Place
                                   1445 Ross Avenue
                                   Dallas, Texas  75202


                                ARTICLE VII

     Elections of directors need not be by written ballot unless the bylaws
of the Corporation shall so provide.


                                ARTICLE VIII

     The Board of Directors  of the Corporation is expressly  authorized to
adopt, amend or  repeal bylaws of the Corporation, but the stockholders may
make additional bylaws and may alter or repeal any bylaw whether adopted by
them or otherwise.


                                 ARTICLE IX

     No contract or transaction between the  Corporation and one or more of
its directors, officers, or stockholders or between the Corporation and any
person  (as  used herein  "person"  means  other corporation,  partnership,
association,  firm,   trust,  joint  venture,  political   subdivision,  or
instrumentality)  or other  organization  in  which  one  or  more  of  its
directors,   officers,   or  stockholders   are  directors,   officers,  or
stockholders,  or  have a  financial interest,  shall  be void  or voidable
solely  for this  reason,  or solely  because  the director  or officer  is
present at or  participates in the meeting of the  board or committee which
authorizes  the contract  or transaction,  or solely  because his,  her, or
their votes are counted for  such purpose, if: (i) the material facts as to
his or her  relationship or interest and as to  the contract or transaction
are disclosed  or are known to the board of directors or the committee, and
the board  of directors or committee in  good faith authorizes the contract
or  transaction by the affirmative votes of a majority of the disinterested
directors, even though the  disinterested directors be less than  a quorum;
or (ii) the material facts as to his or her relationship or interest and as
to  the  contract  or  transaction  are  disclosed  or  are  known  to  the
stockholders entitled to vote  thereon, and the contract or  transaction is
specifically approved in  good faith by vote of  the stockholders; or (iii)
the contract or transaction is fair as to the Corporation as of the time it
is authorized, approved, or ratified by the board of directors, a committee
thereof,  or the  stockholders.   Common  or  interested directors  may  be<PAGE>


counted in determining the presence of  a quorum at a meeting of the  board
of  directors  or  of   a  committee  which  authorizes  the   contract  or
transaction.


                                 ARTICLE X

     The  Corporation shall  indemnify  any  person  who  was,  is,  or  is
threatened to be made a  party to a proceeding (as hereinafter  defined) by
reason of  the fact that he or  she (i) is or was  a director or officer of
the Corporation or (ii) while a  director or officer of the Corporation, is
or was  serving at the request  of the Corporation as  a director, officer,
partner,  venturer,  proprietor,  trustee,   employee,  agent,  or  similar
functionary of another foreign or domestic corporation, partnership,  joint
venture, sole  proprietorship,  trust,  employee  benefit  plan,  or  other
enterprise, to  the fullest  extent  permitted under  the Delaware  General
Corporation Law,  as the  same exists  or may hereafter  be amended.   Such
right shall be a contract right and as such shall run to the benefit of any
director or officer who is elected and accepts the position  of director or
officer of the Corporation or elects to  continue to serve as a director or
officer of the Corporation while  this Article X is in effect.   Any repeal
or amendment  of this  Article X shall  be prospective  only and  shall not
limit the rights of any such director or officer  or the obligations of the
Corporation  with  respect to  any  claim arising  from  or related  to the
services of  such director or  officer in any  of the foregoing  capacities
prior to any such repeal or amendment to this Article X.   Such right shall
include  the right  to  be paid  by the  Corporation  expenses incurred  in
defending any such  proceeding in advance of  its final disposition to  the
maximum extent permitted under the Delaware General Corporation Law, as the
same exists or may hereafter be amended.  If a claim for indemnification or
advancement of  expenses hereunder is not  paid in full  by the Corporation
within  sixty (60)  days after  a written  claim has  been received  by the
Corporation, the claimant may at any time thereafter bring suit against the
Corporation to recover the unpaid amount of the claim, and if successful in
whole or  in part,  the claimant  shall also  be entitled  to  be paid  the
expenses  of prosecuting such  claim.   It shall be  a defense to  any such
action that such indemnification or advancement of costs of defense are not
permitted under the  Delaware General  Corporation Law, but  the burden  of
proving such defense shall be  on the Corporation.  Neither the  failure of
the Corporation (including its board of directors or any committee thereof,
independent legal counsel, or stockholders)  to have made its determination
prior  to the  commencement  of such  action  that indemnification  of,  or
advancement of  costs of  defense to,  the claimant  is permissible in  the
circumstances nor an actual determination by the Corporation (including its
board  of directors or any committee thereof, independent legal counsel, or
stockholders) that  such indemnification or advancement  is not permissible
shall  be  a defense  to  the  action or  create  a  presumption that  such
indemnification or  advancement is  not permissible.   In the event  of the
death of any  person having a right of indemnification  under the foregoing
provisions, such  right shall  inure to  the benefit of  his or  her heirs,
executors,  administrators,  and  personal  representatives.    The  rights
conferred above shall not be exclusive of any other right  which any person
may  have  or hereafter  acquire under  any  statute, bylaw,  resolution of
stockholders or directors, agreement, or otherwise.


                                      3<PAGE>


      The Corporation may  additionally indemnify any  employee or agent  of
the Corporation to the fullest extent permitted by law.

     As  used herein, the term  "proceeding" means any threatened, pending,
or  completed  action,  suit,  or  proceeding,  whether  civil,   criminal,
administrative, arbitrative,  or  investigative,  any  appeal  in  such  an
action,  suit, or proceeding, and  any inquiry or  investigation that could
lead to such an action, suit, or proceeding.


                                 ARTICLE XI

     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  the   General
Corporation Law of the State of  Delaware 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 the General Corporation
Law of the State of Delaware, 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  of the
creditors or class of creditors, and/or on all of the stockholders or class
of stockholders, of this Corporation, as the case may be, and also  on this
Corporation.

                                ARTICLE XII

     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
General  Corporation Law of  the State of  Delaware, as the  same exists or
hereafter  may  be amended,  or  (iv) for  any  transaction from  which the
director  derived an improper personal benefit.  If the General Corporation
Law of the State  of Delaware is amended after  the date of filing  of this
certificate  of   incorporation  to  authorize   corporate  action  further
eliminating  or limiting  the  personal liability  of  directors, then  the
liability  of a 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 General  Corporation Law of  the State of
Delaware.    Any   repeal  or  modification  of   this  Article XII by  the
stockholders  of the Corporation shall  be prospective only,  and shall not

                                      4<PAGE>


adversely affect any limitation on the personal liability  of a director of
the Corporation existing at the time of such repeal or modification.

     The  undersigned   incorporator  under  penalties  of  perjury  hereby
acknowledges that the foregoing certificate of incorporation is his act and
deed and that the facts stated therein are true.



                                   
                                   -------------------------------
                                   Albert G. McGrath, Jr.












































                                      5<PAGE>



                                 EXHIBIT B

                            AFFILIATE AGREEMENT


ENSCO International Incorporated
1445 Ross Avenue, Suite 2700
Dallas, Texas 75202

Ladies and Gentlemen:

     I have been advised that as of the date of this letter I may be deemed
to  be  an "affiliate"  of Dual  Drilling  Company, a  Delaware corporation
("Dual"), as the term "affiliate" is defined for purposes of paragraphs (c)
and  (d)  of  Rule  145  of  the  rules  and  regulations  (the "Rules  and
Regulations") of the Securities and Exchange Commission (the  "Commission")
under the Securities Act of 1933, as amended (the "Act").   Pursuant to the
terms of  the Agreement  and  Plan of  Merger dated  March  ___, 1996  (the
"Agreement"),   between  ENSCO   International  Incorporated,   a  Delaware
corporation ("ENSCO"), ______________, a Delaware corporation and a  wholly
owned subsidiary of ENSCO ("Acquiror Sub"),  and Dual, Acquiror Sub will be
merged with and into Dual (the "Merger").

     In connection  with the transactions contemplated by  the Agreement, I
may receive shares of Common Stock, par value $.10 per share, of ENSCO (the
"ENSCO Securities").

     I represent, warrant and covenant to ENSCO that in the event I receive
any ENSCO Securities as a result of the Merger:

          A.   I  shall not make any sale, transfer or other disposition of
     the  ENSCO  Securities in  violation  of  the  Act  or the  Rules  and
     Regulations.

          B.   I  have carefully  read this  letter and  the Agreement  and
     discussed the  requirements of  such  documents and  other  applicable
     limitations  upon my ability to sell, transfer or otherwise dispose of
     the ENSCO Securities to the extent I felt necessary with my counsel or
     counsel for Dual.

          C.   I have been advised that the issuance of ENSCO Securities to
     me in  connection with the transactions contemplated  by the Agreement
     has  been  registered  with   the  Commission  under  the  Act   on  a
     Registration Statement on Form S-4.  However, I have also been advised
     that, since at  the time the  Merger and the Agreement  were submitted
     for a vote of the stockholders  of Dual, I may be deemed to  have been
     an  affiliate  of Dual  and  the  distribution  by  me  of  the  ENSCO
     Securities has not been registered under  the Act, I may be prohibited
     from  selling,  transferring  or  otherwise  disposing  of  the  ENSCO
     Securities  issued  to   me  in  connection   with  the   transactions
     contemplated  by the Agreement unless (i) such sale, transfer or other
     disposition  has been  registered  under  the  Act,  (ii)  such  sale,
     transfer  or other  disposition is  made in  conformity with  Rule 145
     promulgated by the  Commission under the Act, or (iii)  in the opinion<PAGE>


     of counsel reasonably  acceptable to  ENSCO, or a  "no action"  letter
     obtained by the  undersigned from  the staff of  the Commission,  such
     sale,  transfer   or  other  disposition  is   otherwise  exempt  from
     registration under the Act.

          D.   I understand that ENSCO is  under no obligation to  register
     the sale, transfer or other disposition of the ENSCO  Securities by me
     or on my behalf under the Act or to take any other action necessary in
     order  to make  compliance with  an exemption  from such  registration
     available.

     It is understood and  agreed that prior to any transfer  of any of the
ENSCO Securities,  I will give written  notice to ENSCO of  my intention to
effect such offer, sale or transfer, describing the proposed transaction in
sufficient detail  to enable  ENSCO and its  counsel to determine  that the
proposed transaction will not violate the Act.

     Execution  of this letter should not  be considered an admission on my
part that I am an  "affiliate" of Dual as described in the  first paragraph
of this  letter or as a  waiver of any rights  I may have to  object to any
claim that I am such an affiliate on or after the date of this letter.


                                   Very truly yours,



                                   ___________________________________
                                   Name:


Accepted this _____ day of
March, 1996 by

ENSCO INTERNATIONAL INCORPORATED


By:
    -------------------------------
    William Chadwick, Secretary















                                      2<PAGE>


                                 EXHIBIT C

                  LEGAL OPINION FOR COUNSEL FOR THE TARGET

                      [COUNSEL FOR TARGET LETTERHEAD]








______________, 1996





ENSCO International Incorporated
1445 Ross Avenue, Suite 2700
Dallas, Texas 57202


To whom it may concern:

   We  have  acted  as  counsel  to   Dual  Drilling  Company,  a   Delaware
corporation (the "Target"), in  connection with the execution  and delivery
of the  Agreement and Plan of  Merger (the "Agreement"), dated  as of March
__, 1996, among  ENSCO International Incorporated,  a Delaware  corporation
("Acquiror"),    Dual Acquisition  Company,  a Delaware  corporation  and a
wholly-owned subsidiary  of  Acquiror  ("Acquiror  Sub"),  and  the  Target
providing for  the merger of  Acquiror Sub  with and into  the Target  (the
"Merger").   This  opinion letter  is being  furnished to  you pursuant  to
Section  7.02 of  the Agreement.   Unless otherwise  defined herein  or the
context hereof otherwise requires,  each term used herein with  its initial
letter capitalized has the meaning given to such term in the Agreement.

   We  have  made  such  legal   and  factual  examinations  and  inquiries,
including an examination of the originals, or copies certified or otherwise
identified to  our satisfaction, of  such documents, corporate  records and
other  instruments as  we  have deemed  necessary  or appropriate  for  the
purposes of this opinion, including (i) the Agreement, (ii) the Certificate
of Merger dated  as of _____________, 1996 between the  Target and Acquiror
Sub, and (iii) the  Certificate of Incorporation and Bylaws,  or equivalent
organizational documents, of Target and each Subsidiary.

   We have relied, to  the extent we deem  appropriate, upon oral  advice of
Staff of the Securities and Exchange Commission and, as to matters of fact,
upon representations made by  the Target in the Agreement,  certificates of
the Target or its officers and certificates or other  written statements of
officials  of  jurisdictions having  custody  of  documents respecting  the
corporate existence or  good standing of the Target.   We have assumed that
the  signatures  on all  documents examined  by  us are  genuine,  that all
documents submitted to us as originals  are accurate and complete, and that<PAGE>


all documents submitted  to us as copies are true and correct copies of the
originals thereof.  We are members of the State Bar of Texas.  We call your
attention to the fact that, in rendering our opinion, we are expressing our
views only as to the laws of the State of Texas and the federal laws of the
United States of America.

   Based  upon  the  foregoing   and  subject  to   the  qualifications  and
limitations set forth herein, we are of the opinion that:

   1.     The  Target is  a  corporation, and  each  U.S. Subsidiary  is  a
corporation or  limited partnership, in  each case duly  organized, validly
existing  and in good  standing under the  laws of the  jurisdiction of its
organization  and  has the  requisite  corporate or  partnership  power and
authority to  own, lease  and operate  its properties and  to carry  on its
business as it is now being conducted.  The Target and each U.S. Subsidiary
are  duly qualified  or  licensed  as  a  foreign  corporation  or  limited
partnership to do business, and are in  good standing, in each jurisdiction
where the  character of the properties owned, leased or operated by them or
the  nature  of  their  business  makes  such  qualification  or  licensing
necessary, except for such failures to be qualified or licensed and in good
standing that would not,  individually or in the aggregate, have a Material
Adverse Effect.

   2.     The  Target has all  necessary corporate  power and  authority to
execute and  deliver the  Agreement and,  with  respect to  the Merger,  to
perform its obligations thereunder and to consummate the Transactions.  The
execution and delivery of the Agreement  by the Target and the consummation
by the Target of the Transactions have been duly and  validly authorized by
all  necessary corporate action and  no other corporate  proceedings on the
part  of  the  Target  are  necessary  to  authorize  the  Agreement  or to
consummate  the Transactions (other than  the filing and  recordation of an
appropriate  Certificate  of  Merger  with the  Secretary  as  required  by
Delaware Law).

   3.     The Agreement has been duly and validly executed and delivered by
the Target and, assuming  the due authorization, execution and  delivery of
the Agreement by  Acquiror and Acquiror Sub, constitutes a legal, valid and
binding  obligation  of  the  Target,  enforceable  against  the Target  in
accordance with its  terms, except  as may  be (1)  limited by  bankruptcy,
insolvency,  fraudulent  conveyance, reorganization,  moratorium,  or other
laws affecting enforcement of creditors' rights generally, and  (2) subject
to general  principles  of equity,  regardless  of whether  enforcement  is
considered in a proceeding at law or in equity.

   4.     The execution and delivery of the Agreement by the Target do not,
and the  performance of the Agreement  by the Target will  not (1) conflict
with  or violate  the  Certificate of  Incorporation, Bylaws  or equivalent
organizational documents of the Target or any U.S. Subsidiary, (2) conflict
with or  violate Delaware Law  or any  Laws of  the State of  Texas or  the
United States of America,  or to the best of our knowledge,  any other Laws
applicable to the Target or  any, U.S. Subsidiary or by which  any property
or  asset of the Target or any U.S. Subsidiary is bound or affected, or (3)
to the  best of  our knowledge,  result in  any breach of  or constitute  a
default (or an  event which  with notice  or lapse  of time  or both  would
become  a default)  under,  or give  to others  any  right of  termination,

                                      2<PAGE>


amendment, acceleration or cancellation of, or give to  others any right to
invalidate or terminate  any purchase  or other right  to acquire  property
under, or result  in the  creation of a  lien or  other encumbrance on  any
property or asset of the Target or any Subsidiary or require the consent of
any third party pursuant to, any note, bond, mortgage, indenture, contract,
agreement,  lease,  license,  permit,  franchise  or  other  instrument  or
obligation to which the Target or any Subsidiary is a party or by which the
Target or  any Subsidiary  or any property  or asset  of the Target  or any
Subsidiary is bound or affected.

   5.     The execution and delivery of the Agreement by the Target do not,
and the  performance of the Agreement  by the Target will  not, require any
consent,   approval,  authorization  or  permit   of,  or  filing  with  or
notification to, any domestic governmental or regulatory authority,  except
the filing and recordation of an appropriate Certificate of Merger with the
Secretary as required by Delaware Law.

   6.     To  our knowledge, except as  set forth in  the Target Disclosure
Schedule (as may  have been updated), no actions,  suits or proceedings are
pending or threatened against  Target or any Subsidiary seeking  to prevent
or  delay the transactions contemplated by the Agreement or challenging any
of the terms or provisions of the Agreement or seeking  material damages in
connection therewith.

   7.     The  authorized  capital  stock  of  the  Target  and  each  U.S.
Subsidiary is as set forth in Section 3.03 of the Agreement.

   8.     Upon the issuance of a Certificate of  Merger by the Secretary of
State  of the  State  of Delaware,  the  Merger  will become  effective  in
accordance  with the Agreement  and the Delaware  Law, and each  issued and
outstanding share  of  Company  Common Stock  (other  than  any  Cancelable
Shares) will be  converted into the consideration  provided in Section 2.01
of the Agreement.

   We  have   participated   in   conferences   with  officers   and   other
representatives  of  Acquiror,  Acquiror  Sub   and  the  Target,  and  the
representatives of the independent  auditors of Acquiror, Acquiror  Sub and
the Target, at which the contents of the Registration Statement on Form S-4
(File No. 33-[_______]) declared  effective by the SEC on  [_______], 1996,
(the   "Registration  Statement"),  the  Proxy  Statement/Prospectus  dated
[_______],  1996  included  in  the  Registration  Statement  (the   "Proxy
Statement") and  related matters were discussed.   Although we  do not pass
upon,   and  are  not  assuming   any  responsibility  for   and  have  not
independently verified  the  accuracy,  completeness  or  fairness  of  the
statements contained in the Registration Statement and the Proxy Statement,
on the basis of the foregoing (relying  as to materiality to a large extent
upon statements  and representations of officers  and other representatives
of  the  Target, Acquiror  and Acquiror  Sub), no  facts  have come  to our
attention  which lead us to believe that the Registration Statement (except
for (i) the  financial statements and related  schedules contained therein,
including the notes thereto and the independent  auditors' reports thereon,
(ii) the other financial  and statistical data contained therein  and (iii)
the exhibits thereto, as to which we do not comment), at the time it became
effective contained an untrue  statement of a material  fact or omitted  to
state any material fact required to be stated therein or  necessary to make

                                      3<PAGE>


the  statements therein not misleading, or that the Proxy Statement (except
for  (i) the financial statements and  related schedules contained therein,
including  the notes thereto and the independent auditors' reports thereon,
and (ii) the  other financial and statistical data contained therein, as to
which we  do not  comment), as  of the date  thereof, contained  any untrue
statement of  a material fact or omitted to state a material fact necessary
in order  to make statements  therein, in  the light  of the  circumstances
under which they were made, not misleading.

   The  preceding opinions and  "negative assurance"  statements are subject
to the following qualifications and limitations:

          A.   In connection with  statements herein qualified  by "to  our
   knowledge"  or as  to matters  that  have  "come to  our attention,"  our
   examination has been limited to discussions  with the officers and  other
   representatives  of  the  Target   and  each  Subsidiary  by,  and  those
   statements  refer only to what is in the actual current consciousness of,
   attorneys in  the Dallas,  Houston and  Washington D.C.  offices of  this
   Firm who have been  involved in the representation of the Target and each
   Subsidiary  in  connection  with   the  transactions  described   in  the
   Agreement,  and we  have made  no  independent  investigations as  to the
   accuracy or completeness of any of the  representations, warranties, data
   or other  information, written or oral,  made or furnished by Acquiror or
   Acquiror Sub to us or to you.

          B.   This opinion letter is  limited in all respects to  the laws
   of  the State of Texas, the federal laws of  the United States of America
   and the General Corporation  Law of the State  of Delaware, and we assume
   no  responsibility as  to the  applicability or  the effect of  any other
   laws.    No  opinion  is  expressed  herein  with  respect to  any  laws,
   ordinances,  statutes  or  regulations  of  any  county,  city  or  other
   political subdivision of the State of Texas.

          C.   The opinions and statements expressed herein are limited  to
   the  matters  specifically addressed,  and  no  opinion  or statement  is
   implied or may be inferred beyond the matters so specifically addressed.

          D.   With respect  to the opinion  expressed in  Paragraph 6,  we
   have  not conducted any  search of any indexes,  dockets or other records
   of any court or other Governmental Entity.

          E.   The opinions and statements expressed herein are rendered as
   of  the time  immediately preceding  the  Effective  Time, and  we hereby
   disclaim any  obligation to advise you  of, or to  supplement any of  our
   opinions or  statements because  of, any  changes in fact  or laws  which
   might affect any of those opinions or statements.

          F.   This opinion letter is solely for your benefit in connection
   with the transactions  described in the Agreement  and may not be  relied
   upon, quoted or otherwise used by any  other person or entity or  for any
   other purpose without our express written consent.

                                    Very truly yours,
                                     
                                    AKIN, GUMP, STRAUSS, HAUER & FELD, L.L.P.

                                      4<PAGE>



                                 EXHIBIT D

                   LEGAL OPINION FOR COUNSEL FOR ACQUIROR

                     [COUNSEL FOR ACQUIROR LETTERHEAD]








______________, 1996



DUAL DRILLING COMPANY
5956 Sherry Lane, Suite 1500
Dallas, Texas 75225

We  have acted as counsel  to ENSCO International  Incorporated, a Delaware
corporation  ("Acquiror"),  and   Dual  Acquisition  Company,   a  Delaware
corporation and a wholly-owned subsidiary of Acquiror  ("Acquiror Sub"), in
connection with  the execution and  delivery of the  Agreement and Plan  of
Merger  (the "Agreement"),  dated  as  of  February __,  1996,  among  DUAL
DRILLING  COMPANY,  a Delaware  corporation  (the  "Target"), Acquiror  and
Acquiror Sub,  providing for the merger  of Acquiror Sub with  and into the
Target  (the "Merger").    This opinion  letter is  being furnished  to you
pursuant to Section 7.03 of the Agreement.  Unless otherwise defined herein
or the  context hereof otherwise requires,  each term used  herein with its
initial  letter  capitalized has  the meaning  given  to such  term  in the
Agreement.

We have examined  and are familiar  with originals or copies,  certified or
otherwise authenticated to our satisfaction,  of such documents and records
of  Acquiror  and  Acquiror   Sub,  and  such  statutes,   regulations  and
instruments as  we have deemed necessary  or advisable for the  purposes of
this opinion letter, including, without limitation, (i) the Agreement, (ii)
the  Certificate  of Merger  dated as  of  _____________, 1996  between the
Target  and Acquiror Sub, (iii) the Certificate of Incorporation and Bylaws
of  Acquiror, and  (iv)  the Certificate  of  Incorporation and  Bylaws  of
Acquiror Sub.

As to  certain facts material to  our opinions herein, we  have assumed the
accuracy  of  the  representations of  Acquiror  and  Acquiror  Sub in  the
Agreement and  of one  or more officers  of Acquiror  or Acquiror Sub.   In
addition, we have assumed that all signatures on all documents presented to
us  are genuine,  that  all  documents submitted  to  us  as originals  are
accurate and complete,  that all documents  submitted to  us as copies  are
true and complete  copies of  the originals thereof,  that all  information
submitted to us  was accurate and complete, and  that all persons executing
and  delivering  originals  or copies  of  documents  examined  by us  were
competent to  execute and deliver such documents.  We have also assumed the
due  authorization, execution and delivery  by the Target  of the Agreement<PAGE>


and the Certificate of Merger and that the Agreement and the Certificate of
Merger constitute  legal,  valid  and  binding obligations  of  the  Target
enforceable against the Target in accordance with their terms.

We have also considered applicable provisions of the Code and Department of
Treasury  regulations   promulgated  under  the  Code   (whether  proposed,
temporary or  final) now in effect  (collectively, "Treasury Regulations"),
pertinent judicial authorities regarding applicable provisions of the  Code
and  Treasury Regulations, interpretive rulings  of the IRS  and such other
federal tax-related authorities as we have considered relevant.

Based  upon the foregoing and subject to the qualifications and limitations
set forth below, we are of the opinion that:

   1.     Each  of  Acquiror  and  Acquiror  Sub  is   a  corporation  duly
organized, validly  existing and  in good  standing under  the laws  of the
State of Delaware  and has the requisite  corporate power and authority  to
own, lease and operate its properties as now owned, leased and operated and
to carry on its business as is now being conducted.

   2.     Each of  Acquiror and  Acquiror Sub has  all necessary  corporate
power and authority to execute and  deliver the Agreement and, with respect
to the Merger, to perform  its obligations hereunder and to consummate  the
Transactions.  The execution and delivery of the Agreement by  Acquiror and
Acquiror Sub  and the  consummation by  Acquiror  and Acquiror  Sub of  the
Transactions  have been  duly  and  validly  authorized  by  all  necessary
corporate action and no other corporate proceedings on the part of Acquiror
or Acquiror Sub are  necessary to authorize the Agreement or  to consummate
the Transactions (other than  the filing and recordation of  an appropriate
Certificate of Merger with the Secretary as required by Delaware Law).

   3.     The Agreement has been duly and validly executed and delivered by
Acquiror  and Acquiror Sub  and, assuming the  due authorization, execution
and delivery of the Agreement by the Target, constitutes a legal, valid and
binding obligation of each of Acquiror and Acquiror Sub enforceable against
each of Acquiror and Acquiror  Sub in accordance with its terms,  except as
may be  (i)  limited  by  bankruptcy,  insolvency,  fraudulent  conveyance,
reorganization,  moratorium,  or   other  laws  affecting  enforcement   of
creditors   rights generally,  and (ii)  subject  to general  principles of
equity,  regardless of whether enforcement is considered in a proceeding at
law or in equity.

    4.    The  execution  and delivery  of  the Agreement  by  Acquiror and
Acquiror Sub do  not, and the performance of the  Agreement by Acquiror and
Acquiror Sub  will  not (i)  conflict with  or violate  the Certificate  of
Incorporation or Bylaws of either Acquiror or any Acquiror Subsidiary, (ii)
conflict with  or violate any  Law applicable to  Acquiror or any  Acquiror
Subsidiary  or by which any  property or asset  of any of them  is bound or
affected, or (iii) result in any  breach of or constitute a default  (or an
event  which with notice or  lapse of time or both  would become a default)
under, or give to others any rights of termination, amendment, acceleration
or  cancellation  of,  or  result  in  the  creation  of  a  lien or  other
encumbrance on any property or asset of Acquiror or any Acquiror Subsidiary
or require  the consent of  any third  party pursuant to,  any note,  bond,
mortgage, indenture, contract, agreement, lease, license, permit, franchise

                                      2<PAGE>


or  other  instrument  or obligation  to  which  Acquiror  or any  Acquiror
Subsidiary is  a party or by  which Acquiror or any  Acquiror Subsidiary or
any  property or asset  of any of  them is bound  or affected and  which is
identified in the Officer's  Certificate attached hereto as Exhibit  A (the
"Officer's Certificate").

   5.     The  execution  and delivery  of  the Agreement  by  Acquiror and
Acquiror Sub do not, and the  performance of this Agreement by Acquiror and
Acquiror  Sub will  not, require  any consent,  approval, authorization  or
permit  of,  or  filing  with  or  notification  to,  any  governmental  or
regulatory authority,  domestic or foreign,  except pursuant to  the filing
and  recordation of an appropriate Certificate of Merger with the Secretary
as required by Delaware Law.

   6.     Upon the issuance  of a Certificate of Merger by the Secretary of
State  of the  State  of  Delaware, the  Merger  will  become effective  in
accordance with the  Agreement and the  Delaware Law,  and each issued  and
outstanding  share  of Company  Common  Stock  (other than  any  Cancelable
Shares) will be converted  into the consideration provided  in Section 2.01
of the Agreement.

   7.     To  our knowledge, except as set forth in the Acquiror Disclosure
Schedule (as may have been  updated), no actions, suits or proceedings  are
pending or threatened against  Acquiror or Acquiror Sub seeking  to prevent
or  delay the transactions contemplated by the Agreement or challenging any
of the terms or provisions of  the Agreement or seeking material damages in
connection therewith.

   8.     The authorized capital stock  of Acquiror and Acquiror Sub  is as
set forth in Section 4.03 of the Agreement.

   9.     The shares of Acquiror  Common Stock to be  issued in the  Merger
have been  duly authorized and, when  issued and delivered pursuant  to the
terms  of the Agreement, will be validly issued, fully paid, non-assessable
and free of preemptive rights.

We have participated in conferences with officers and other representatives
of  Acquiror, Acquiror  Sub  and the  Target,  and representatives  of  the
independent auditors for the Target and Acquiror,  at which the contents of
the Registration  Statement on Form S-4 (File  No. 33-___________) declared
effective by the SEC on  ____________, 1996 (the "Registration Statement"),
the Proxy Statement/Prospectus  dated _____________, 1996  included in  the
Registration  Statement (the  "Proxy Statement")  and related  matters were
discussed.  We  are not passing upon, do not  assume any responsibility for
and have not, and shall  not be deemed to have, independently  verified the
accuracy,  completeness,  or fairness  of the  statements contained  in the
Registration  Statement and the Proxy  Statement; however, on  the basis of
our  participation  in  the preparation  of  the  Proxy  Statement and  the
Registration Statement and our participation in discussions relating to the
contents thereof,  no facts  have come  to our attention  which lead  us to
believe  that the  information with  respect to  Acquiror and  Acquiror Sub
contained  in the Registration Statement or the Proxy Statement (except for
the financial  information, financial  statements, financial schedules  and
other  financial  or statistical  data contained  therein,  as to  which we
express  no  opinion),  on  the  date such  Registration  Statement  became

                                      3<PAGE>


effective  under the Securities  Act, on the date  such Proxy Statement was
first  mailed to  stockholders of  the Target,  on the  date of  the Target
Stockholders'  Meeting  convened to  consider the  Merger,  or on  the date
hereof, contained or  contains any untrue statement  of a material  fact or
omitted or omits to state a material fact required to  be stated therein or
necessary to make  the statements  therein, in light  of the  circumstances
under which they were made, not misleading.

The preceding opinions  and "negative assurance" statements  are subject to
the following qualifications and limitations:

   A.     In  connection  with  statements  herein  qualified  by  "to  our
knowledge"  or as  to  matters  that  have "come  to  our  attention,"  our
examination has been  limited to  discussions with the  officers and  other
representatives of Acquiror and Acquiror Sub by, and those statements refer
only to  what is in the  actual current consciousness of,  attorneys in the
Dallas, Chicago and  Washington D.C.  offices of  this Firm  who have  been
involved in the representation  of Acquiror and Acquiror Sub  in connection
with  the transactions  described in  the  Agreement, and  we have  made no
independent investigations as to the accuracy or completeness of any of the
representations, warranties, data  or other information,  written or  oral,
made or furnished by Acquiror or Acquiror Sub to us or to you.

   B.     This opinion letter is limited in all respects to the laws of the
State of Texas,  the federal laws of  the United States of  America and the
General  Corporation  Law  of  the  State of  Delaware,  and  we  assume no
responsibility as to the applicability or the effect of any other laws.  No
opinion  is expressed herein with respect to any laws, ordinances, statutes
or regulations  of any county,  city or other political  subdivision of the
State of Texas.

   C.       The opinions and statements expressed herein are limited to the
matters specifically addressed, and  no opinion or statement is  implied or
may be inferred beyond the matters so specifically addressed.

   D.     With respect to the opinion expressed in Paragraph 7, we have not
conducted any search of any indexes, dockets or other records  of any court
or other Governmental Entity.

   E.     The  opinions and statements expressed  herein are rendered as of
the time immediately preceding  the Effective Time, and we  hereby disclaim
any obligation to advise  you of, or to supplement  any of our opinions  or
statements because of, any changes in fact or law which might affect any of
those opinions or statements.

   F.     This opinion letter is solely for your benefit in connection with
the transactions  described in the  Agreement and may  not be relied  upon,
quoted or  otherwise used by any  other person or  entity or for  any other
purpose without our express written consent.

                                   Very truly yours,





                                      4<PAGE>




                                   AGREEMENT


     This  Agreement,  dated  as  of  March  21,  1996,  is  between  ENSCO
International Incorporated,  a  Delaware corporation  ("ENSCO"),  and  Dual
Invest AS, a Norwegian corporation (the "Stockholder"). 

     WHEREAS, concurrently  herewith, ENSCO,  ENSCO Acquisition  Company, a
Delaware corporation  and a  wholly-owned  subsidiary of  ENSCO  ("Acquiror
Sub"), and DUAL DRILLING  COMPANY, a Delaware corporation  (the "Company"),
are entering into an Agreement and  Plan of Merger (the "Merger Agreement";
capitalized terms  used  without  definition  herein  having  the  meanings
ascribed thereto in the Merger Agreement); 

     WHEREAS,  the Stockholder    is the  record  and beneficial  owner  of
9,382,354 shares of Target Common Stock (the "Block Shares"); 

     WHEREAS,  approval of  the  Merger Agreement  and  the Merger  by  the
Company s  stockholders is a condition  to the consummation  of the Merger;
and 

     WHEREAS, as a  condition to  its entering into  the Merger  Agreement,
ENSCO  has required  that the  Stockholder agree,  and the  Stockholder has
agreed, to enter into this Agreement.

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

     Section 1.     VOTING  AGREEMENT AND GRANT OF PROXY.  From the date of
this Agreement until July 31, 1996:  

       (a)     The  Stockholder hereby agrees  that at  any meeting  of the
stockholders of the Company, however  called, and any action by consent  of
the  stockholders  of the  Company, the  Stockholder  shall vote  the Block
Shares,  and any  other voting  securities of  the Company,  whether issued
heretofore or hereafter,  which are held of  record or beneficially  by the
Stockholder, (i) in  favor of the Merger and the  Merger Agreement, (ii) in
favor of adoption and  approval of the Dual Special Performance  Unit Plan,
effective  August  21,  1995, as  amended  as  contemplated  by the  Merger
Agreement, and (iii) against any  proposal for any recapitalization, merger
(other  than  the Merger),  sale of  assets  or other  business combination
between the Company and any person or entity (other than ENSCO  or Acquiror
Sub) or any  other action or agreement that ENSCO  notifies the Stockholder
in  writing  before any  vote would  result in  a  breach of  any covenant,
representation  or warranty  or any  other obligation  or agreement  of the
Company under  the Merger  Agreement or  which could result  in any  of the
conditions to the Merger Agreement not being fulfilled.

     (b)  Except as provided in this Section 1 and except  for transfers to
the  Stockholder from an affiliate,  the Stockholder hereby  agrees that it
shall not, and shall not offer or agree to, sell, transfer, tender, assign,
hypothecate  or otherwise  dispose of,  or create  or permit  to  exist any
pledge, lien, security  interest, mortgage, charge,  claim, option,  proxy,
voting  restriction, right of first refusal,  limitation on disposition, or
encumbrance of any  kind on or with  respect to the Block Shares  or  other<PAGE>


voting securities of the  Company, whether issued heretofore  or hereafter,
which are held of record or beneficially by the Stockholder.  

     (c)  The Stockholder,  by this  Agreement, with  respect to the  Block
Shares  and  any other  voting securities  of  the Company,  whether issued
heretofore or hereafter, which are held of  record by the Stockholder, does
hereby constitute  and appoint ENSCO  and Acquiror Sub,  or any  nominee of
ENSCO and  Acquiror Sub,  with full power  of substitution,  from the  date
hereof  to the earlier to occur of July  31, 1996 or the Effective Time, as
its true and lawful attorney and proxy (its "Proxy"),  for and in its name,
place and stead, to demand that the Secretary of the Company call a special
meeting of the stockholders of  the Company for the purpose of  considering
any  actions related to the Merger Agreement and  to vote each of the Block
Shares  and  any other  voting securities  of  the Company,  whether issued
heretofore or hereafter,  which are held of  record by the  Stockholder, at
every  annual,  special or  adjourned meeting  of  the stockholders  of the
Company,  including  the right  to sign  its name  (as stockholder)  to any
consent, certificate or other document relating to the Company that the law
of the State of Delaware may permit or require:

     (i)   in favor of the Merger and the Merger Agreement; 

     (ii)  in  favor  of adoption  and  approval  of the  Dual  Special
           Performance Unit Plan, effective August 21, 1995, as amended
           as contemplated by the Merger Agreement; and

    (iii)  against any proposal for any recapitalization, merger (other
           than  the  Merger),  sale  of   assets  or   other  business
           combination between the  Company and  any  person or  entity
           (other than  ENSCO or Acquiror  Sub) or  any other action or
           agreement  that ENSCO  notifies  the Stockholder in  writing
           before any vote would result  in  a breach of any  covenant,
           representation or warranty or any other obligation or agree-
           ment of the Company  under  the  Merger  Agreement  or could
           result  in  any of  the conditions to  the Merger  Agreement
           not being fulfilled.

THIS  PROXY AND  POWER  OF  ATTORNEY IS  IRREVOCABLE  AND  COUPLED WITH  AN
INTEREST.  The Stockholder acknowledges receipt and review of a copy of the
Merger Agreement.   The Stockholder hereby  revokes all proxies  heretofore
made by it that are inconsistent with this Section 1.

     (d)  The Stockholder shall perform such further acts and execute  such
further documents and instruments as may  reasonably be required to vest in
ENSCO and  Acquiror Sub  the power  to carry  out  and give  effect to  the
provisions of this Agreement.

     (e)  The Company  will  cause  each  certificate  of  the  Stockholder
evidencing the Block Shares outstanding during the period that this Section
1 is in effect to bear a legend in the following form:

     THE  SHARES  REPRESENTED BY  THIS  CERTIFICATE MAY  NOT  BE SOLD,
     EXCHANGED  OR  OTHERWISE TRANSFERRED  OR  DISPOSED  OF EXCEPT  IN
     COMPLIANCE WITH  THE TERMS AND  CONDITIONS OF AN  AGREEMENT DATED
     MARCH   21,  1996,  AS IT  MAY BE  AMENDED,  AMONG DUAL  DRILLING
     COMPANY,  ENSCO  INTERNATIONAL  INCORPORATED AND  THE  REGISTERED<PAGE>


     HOLDER OF THIS  CERTIFICATE, A COPY  OF WHICH IS  ON FILE AT  THE
     PRINCIPAL EXECUTIVE OFFICES OF THE ISSUER.

Upon the expiration of the  period during which this Section 1 is in effect
or in the event that the Block Shares otherwise  cease to be subject to the
restrictions  on transfer set forth  in this Agreement,  the Company shall,
upon the written request of the Stockholder, issue to the Stockholder a new
certificate evidencing  such shares  without the  legend  required by  this
Section 1(e).  

     (f)  The Stockholder agrees that until July  31, 1996 it will not vote
any of the Block Shares at any  annual, special or adjourned meeting of the
stockholders of  the Company,  including  the right  to sign  its name  (as
stockholder)  to any consent, certificate or other document relating to the
Company that the law of the State of Delaware may permit or require, (i) to
approve of  the adoption and approval of the Dual  Special Performance Unit
Plan, effective August 21, 1995 in any manner except as contemplated by the
Merger Agreement,  or  (ii)  in  any manner  that  is  intended,  or  could
reasonably  be  expected, to  impede, interfere  with, delay,  postpone, or
materially  adversely affect  the transactions  contemplated by  the Merger
Agreement.

     Section 2.     SECURITIES ACT COVENANTS  AND REPRESENTATIONS.  Subject
to ENSCO's obligations under Section 3.1, the Stockholder hereby agrees and
represents to ENSCO as follows: 

     (a)  The  Stockholder  has  been  advised that  the  offer,  sale  and
delivery of the  Acquiror Common Stock to  the Stockholder pursuant to  the
Merger  may not  be registered  under the  Securities Act,  despite ENSCO's
obligations  to   use  commercially  reasonable  efforts   to  effect  such
registration.  The Stockholder has been advised that if the offer, sale and
delivery of the Acquiror  Common Stock to the  Stockholder pursuant to  the
Merger has not  been registered under the Securities Act,  then such shares
(the  "Merger Shares") may not  be offered, sold,  pledged, hypothecated or
otherwise transferred  unless subsequently registered  under the Securities
Act or an exemption  from such registration is available.   The Stockholder
has also been advised that even if the sale and delivery to the stockholder
of the Merger Shares is registered  under the Securities Act, to the extent
the Stockholder is considered an "affiliate" of the Company at the time the
Merger  Agreement is  submitted  for a  vote  of  the stockholders  of  the
Company,  any public  offering or  sale  by the  Stockholder of  the Merger
Shares will, under current law, require either (i) the further registration
under the Securities  Act of  the Merger Shares,  which ENSCO is  obligated
under  Section 3.1 to use  commercially reasonable efforts  to effect, (ii)
compliance  with  Rule  145  promulgated by  the  Securities  and  Exchange
Commission  (the  "Commission")  under  the  Securities Act  or  (iii)  the
availability  of  another  exemption  from  such  registration  under   the
Securities Act.

     (b)  The Stockholder has read this  Agreement and the Merger Agreement
and has discussed their requirements and other  applicable limitations upon
its ability to sell, transfer or otherwise dispose of the Merger Shares, to
the  extent the Stockholder believed necessary, with its counsel or counsel
for the Company. 

     (c)  The Stockholder also understands that stop transfer  instructions
will be  given to ENSCO's transfer agents with respect to the Merger Shares<PAGE>


and that a  legend will be placed on the certificates for the Merger Shares
issued to  the Stockholder, to the extent  the Stockholder is considered an
"affiliate"  of the Company at  the time the  Merger Agreement is submitted
for a vote of the stockholders of the Company.

     Section 3.     REGISTRATION OF MERGER SHARES.  

     (a)  ENSCO shall  use all commercially reasonable efforts on or before
the Effective  Time to effect the registration under the Securities Act, on
an  appropriate  form,  of  the  transfer  of  the  Merger  Shares  to  the
Stockholder and the Stockholder s subsequent transfer of such Merger Shares
to  the security holders  of the Stockholder in  the manner contemplated on
Exhibit A and  the resale of the Merger Shares by  the Stockholder or by B.
Skaugen  Shipping  AS  and  its  affiliates  (collectively,   Skaugen )(all
persons who  receive Merger  Shares and whose  resales are covered  by this
Section 3(a) shall  be referred  to herein as  the "Selling  Stockholders")
unless ENSCO shall have provided to Skaugen  a no-action letter, or opinion
of counsel reasonably  acceptable to Skaugen, concluding  that Skaugen will
not be restricted  in any way  in its ability  absent such registration  to
resell  Merger Shares received by Skaugen from the Stockholder. ENSCO shall
be required to  file only  one such registration  statement and shall  keep
such registration   continuously effective  until such time  as the  Merger
Shares have  been disposed of by  the Selling Stockholders but  in no event
for a period of  longer than twelve months after the date  of the Effective
Time.  For purposes  of this Section 3, "Registration  Statement" means the
registration statement covering  the Merger Shares  filed pursuant  hereto,
including, to  the extent  applicable,  the prospectus  (the  "Prospectus")
included in any such registration statement, all amendments and supplements
to any  such registration statement (including  post-effective amendments),
all  exhibits  to   any  such  registration  statement  and   all  material
incorporated by reference in any such registration statement.

     (b)  In  connection with ENSCO's  registration obligations pursuant to
Section 3(a) and, except as provided in Section 3(b)(i), ENSCO  shall  keep
continuously effective  the Registration Statement  for the period  of time
provided  in Section 3(a), to permit the sale of the Merger Shares pursuant
to the Registration  Statement in  accordance with the  intended method  or
methods of  distribution thereof specified  by the  Stockholder in  Section
3(a) above and in Exhibit A, and shall:

          (i)  notify  the Selling  Stockholders, promptly  (A) when a  new
     Registration  Statement, Prospectus  or  supplement thereto  or  post-
     effective  amendment  has  been filed,  and,  with  respect  to a  new
     Registration Statement or post-effective amendment when it has  become
     effective,  (B) of any  request by  the Commission  for amendments  or
     supplements  to  any  Registration  Statement  or  Prospectus  or  for
     additional  information, (C) of the issuance by  the Commission of any
     comments with respect to any filing  and of any stop order  suspending
     the  effectiveness of any Registration  Statement or the initiation of
     any proceedings for that  purpose, (D) of the receipt by ENSCO  of any
     notification with  respect  to the suspension of the  qualification of
     the Merger Shares for  sale in any  jurisdiction or the initiation  or
     threatening of any proceeding  for such purpose, (E) of the  happening
     of  any  event  that makes  any  statement  made  in any  Registration
     Statement,  Prospectus   or  any  document  incorporated   therein  by
<PAGE>


     reference  untrue or that  requires the making  of any  changes in any
     Registration  Statement,  Prospectus   or  any  document  incorporated
     therein  by  reference in  order to  make  the statements  therein not
     misleading,  and (F) of  ENSCO's determination  that  a post-effective
     amendment to a Registration Statement would be appropriate;

          (ii) furnish to the Selling Stockholders, without charge, as many
     conformed copies  of the  Registration  Statement and  any  amendments
     thereto as may reasonably be requested by the Selling Stockholders; 

          (iii)     deliver to the Selling Stockholders, without charge, as
     many  copies  of the  Prospectus covering  the  Merger Shares  and any
     amendments or supplements  thereto as the  Stockholder or the  Selling
     Stockholders may reasonably request; 

          (iv) register,  qualify,  or obtain  an  exemption therefrom,  in
     connection  with  the  registration  or   qualification  or  exemption
     therefrom of the Merger Shares for offer and sale under the securities
     or blue  sky  laws of  New  York and,  as  the Stockholder  reasonably
     requests,  any other jurisdictions within the United States and do any
     and all  other acts  or things  necessary or  advisable to enable  the
     disposition  in such jurisdictions of the Merger Shares covered by the
     Registration  Statement; provided,  however, that  ENSCO shall  not be
     required  to qualify  as  a  dealer  in securities  or  as  a  foreign
     corporation,  or otherwise  subject itself  to taxation  in connection
     with such activities,  or to execute a  general consent to  service of
     process in any jurisdiction; 
     
          (v)  otherwise use its best efforts to comply with all applicable
     rules  and regulations of the Commission relating to such registration
     and  the  distribution of  the  securities  being  offered,  and  make
     generally  available to  its  securities  holders  earning  statements
     satisfying  the provisions of  Section 11(a) of the  Securities Act no
     later than  90 days after the end of any  12-month period (or 120 days
     if such period is a fiscal year) beginning with the first month of the
     first  fiscal quarter  commencing  after the  effective  date of  such
     Registration Statement, which earning statements shall cover such  12-
     month periods;

          (vi) in no event later  than ten business days before  filing any
     Registration Statement  or Prospectus, or any  amendment or supplement
     (other  than any  amendment or supplement  made solely as  a result of
     incorporation  by reference of documents)  to any thereof  (or, in the
     case of any Prospectus supplement or post-effective amendment relating
     to a proposed shelf  draw-down,  three Business Days before the filing
     thereof),  furnish  to the  Stockholder copies  of all  such documents
     proposed  to be  filed,  which  documents  shall  be  subject  to  the
     reasonable review of the Stockholder;

          (vii)     promptly after the filing of any document that is to be
     incorporated by reference into a Registration Statement or Prospectus,
     provide copies of such document to the Stockholder; and
   
<PAGE>



          (viii)    use  all commercially  reasonable efforts  to take  all
     action  necessary or  advisable  to effect  such  registration in  the
     manner contemplated by this Agreement.

     (c)  The  Stockholder and  each Selling  Stockholder shall  furnish to
ENSCO  such   information  regarding  the  Stockholder   and  each  Selling
Stockholder and the plan of distribution of the Merger Shares  as ENSCO may
from time to time reasonably request. 

     (d)  The  Stockholder and  each Selling  Stockholder agrees  that upon
receipt of any notice from  ENSCO of the happening of any event of the kind
described in  Sections 3(b)(i)(B),  3(b)(i)(C), 3(b)(i)(D),  3(b)(i)(E)  or
3(b)(i)(F), it shall forthwith discontinue disposition of the Merger Shares
pursuant to the Prospectus until (A) it is advised in writing by ENSCO that
a new Registration  Statement covering the offer  of the Merger  Shares has
become effective  under the Securities Act  or (B) it receives  copies of a
supplemented or amended Prospectus,  or (C) until it is advised  in writing
by  ENSCO that  the  use of  the Prospectus  may be  resumed.   ENSCO shall
promptly  take  all  such  action  as  may  be  necessary  or  appropriate,
including,  without limitation, the filing of  a new Registration Statement
or  an  amendment to  the then  current  Registration Statement  and/or the
filing  of  an   amended  Prospectus,   to  limit  the   duration  of   any
discontinuance  with  respect  to  the disposition  of  the  Merger  Shares
pursuant to this Section 3(d). 

     (e)  The Stockholder and each Selling Stockholder shall cooperate with
ENSCO in all  reasonable respects  in connection with  the preparation  and
filing  of   the  Registration  Statement;  provided,   however,  that  the
Stockholder and each Selling Stockholder shall not be required to incur any
material out-of-pocket cost or expense when providing such cooperation.

     (f)  The Stockholder  and any Selling  Stockholder agrees at  any time
beginning not earlier than six  (6) months after the Effective Time  not to
effect any public sale or distribution of any  of ENSCO's securities during
the period beginning 10 days prior to and ending 90 days after, the closing
of  an underwritten  offering  of  securities  by  ENSCO  if  the  managing
underwriter in such offering determines the sale of the Merger Shares would
have an adverse  effect on an orderly public distribution  of securities in
the underwritten offering or would  have an adverse effect on the  price of
the securities offered in  the underwritten offering; provided that  if the
Stockholder  or  any  Selling  Stockholder is  prevented  from  selling  or
distributing ENSCO's securities during any period pursuant  to this Section
3(f), then  the registration  provided for  in Section  3(a) shall be  kept
continuously  effective for  at least  90 days  after the  end of  any such
period notwithstanding  the limitation provided  in Section 3(a)  that such
registration  shall in  no event  be required  to be  kept effective  for a
period of longer than 12 months after the date of the Effective Time; 

     (g)  All  expenses incident  to ENSCO's  performance of  or compliance
with this  Agreement, including  without  limitation all  registration  and
filing  fees, fees and expenses for  compliance with securities or blue sky
laws  (including fees  and disbursements of  ENSCO's counsel  in connection
with  blue  sky  qualifications  or  registrations  (or  the  obtaining  of
exemptions therefrom)  of the Merger Shares),  printing expenses (including
expenses  of  printing  Prospectuses),  messenger  and  delivery  expenses,
<PAGE>



internal expenses (including, without limitation, all salaries and expenses
of  its officers and employees performing legal or accounting duties), fees
and disbursements  of  its counsel  and  its independent  certified  public
accountants, fees and  expenses of any special experts retained by ENSCO in
connection  with any registration hereunder, and fees and expenses of other
persons  retained by ENSCO, but excluding fees and disbursements of counsel
retained by the Stockholder, any fees and expenses of  any underwriters and
transfer taxes,  if any, relating to  the Merger Shares, shall  be borne by
ENSCO.

     (h)  ENSCO  shall indemnify  and  hold harmless,  to  the full  extent
permitted by  law, the  Stockholder,  its officers,  directors,  employees,
representatives and  agents,  and  each Person  who  controls  (within  the
meaning  of the  Securities Act)  the Stockholder,  and each  other Selling
Stockholder against  all losses, claims, damages,  liabilities and expenses
(including reasonable costs of investigation and legal expenses)  resulting
from any untrue or alleged untrue statement of a material fact contained in
any  Registration  Statement  or  any   Prospectus,  or  any  amendment  or
supplement  thereto, or any  omission or alleged  omission to state  in any
thereof a material fact required to  be stated therein or necessary to make
the statements therein  not misleading,  except in each  case insofar,  but
only  insofar, as  the  same  arises out  of  or is  based  upon an  untrue
statement or alleged untrue statement of  a material fact or an omission or
alleged omission to state  a material fact in such  Registration Statement,
Prospectus, amendment or supplement,  as the case may be,  made or omitted,
as  the case  may  be, in  reliance  upon and  in  conformity with  written
information furnished to ENSCO  by a Selling Stockholder expressly  for use
therein. 

     (i)  The Stockholder and  each Selling Stockholder  each with  respect
only  to written information furnished by it  to ENSCO expressly for use in
any Registration Statement, any Prospectus,  or any amendment or supplement
thereto shall indemnify and hold harmless,  to the full extent permitted by
law, ENSCO, its officers, directors, employees, representatives and agents,
and each Person  who controls (within  the meaning of  the Securities  Act)
ENSCO, against  all  losses,  claims,  damages,  liabilities  and  expenses
(including reasonable costs of investigation and legal expenses)  resulting
from any untrue or alleged untrue statement of a material fact contained in
such Registration Statement, any Prospectus, or any amendment or supplement
thereto,  or any  omission or alleged  omission to  state in  any thereof a
material fact  required  to be  stated  therein or  necessary  to make  the
statements therein  not misleading, as the  same arises out of  or is based
upon an untrue statement or alleged untrue statement of a  material fact or
an  omission  or  alleged  omission  to  state  a  material  fact  in  such
Registration Statement, Prospectus,  amendment or supplement,  as the  case
may  be, made  or omitted,  as the  case may  be, in  reliance upon  and in
conformity with such written information. 

     (j)  Each party entitled to indemnification under this Section 3  (the
"Indemnified Party") shall  give notice  to the party  required to  provide
indemnification  (the "Indemnifying Party") promptly after such Indemnified
Party has  actual knowledge  of  any claim  as to  which  indemnity may  be
sought, and  shall permit the Indemnifying  Party to assume  the defense of
any  such  claim or  any  litigation  resulting therefrom;  provided,  that
counsel for  the Indemnifying Party, who  will conduct the defense  of such
<PAGE>


claim or litigation, is  approved by the Indemnified Party  (whose approval
will  not be unreasonably withheld or delayed); and provided, further, that
the  failure of  any Indemnified  Party to give  notice as  provided herein
shall not relieve the Indemnifying Party  of its obligations except to  the
extent that its  defense of the claim or litigation  involved is prejudiced
by such  failure.  The Indemnified Party may participate in such defense at
such party's expense; provided, however, that the Indemnifying Party  shall
pay such expense if representation of such Indemnified Party by the counsel
retained by  the Indemnifying Party would be inappropriate due to actual or
potential conflicts of interest between the Indemnified Party and any other
party  represented by  such counsel  in such  proceeding.   No Indemnifying
Party, in the defense of  any such claim or litigation, shall,  except with
the consent of each Indemnified Party, consent to entry of  any judgment or
enter  into any settlement that  does not include  as an unconditional term
thereof the giving by the claimant  or plaintiff to such Indemnified  Party
of a release from all liability in respect of any claim or litigation,  and
no Indemnified  Party will consent to  entry of any judgment  or settle any
claim or litigation without  the prior written consent of  the Indemnifying
Party.  Each  Indemnified Party  shall furnish  such information  regarding
himself or itself  and the claim in question as  the Indemnifying Party may
reasonably request and as  shall be reasonably required in  connection with
the defense of such claim and litigation resulting therefrom.

     (k)  If  for  any  reason  the indemnification  provided  for  in this
Section 3 from an Indemnifying Party is unavailable to an Indemnified Party
hereunder  or  insufficient to  hold it  harmless  as contemplated  by this
Section 3,  then  the Indemnifying  Party,  in  lieu of  indemnifying  such
Indemnified Party, shall contribute  to the amount paid or payable  by such
Indemnified  Party as a result of such losses, claims, damages, liabilities
or expenses in such  proportion as is  appropriate to reflect the  relative
fault of an Indemnifying Party and Indemnified Party in connection with the
actions  that resulted  in  such losses,  claims,  damages, liabilities  or
expenses,  as well  as any  other relevant  equitable considerations.   The
relative fault of  the Indemnifying  Party and Indemnified  Party shall  be
determined  by  reference to,  among other  things,  whether any  action in
question,  including any untrue or  alleged untrue statement  of a material
fact,  has  been made  by,  or  relates  to  information  supplied  by,  an
Indemnifying Party or Indemnified Party, and the parties   relative intent,
knowledge, access to information and opportunity to correct or prevent such
action.  The amount paid  or payable by a party as a result  of the losses,
claims, damages, liabilities and expenses referred to above shall be deemed
to include, subject to the limitations set forth in Section 3(j), any legal
or  other fees or expenses reasonably incurred  by such party in connection
with any  investigation or proceeding.   The  parties hereto agree  that it
would   not  be  just  and  equitable  if  contribution  pursuant  to  this
Section 3(k) were determined by pro rata allocation or by any  other method
of  allocation that does not  take account of  the equitable considerations
referred to in  the immediately preceding paragraph.   No person  guilty of
fraudulent misrepresentation (within  the meaning of  Section 11(f) of  the
Securities Act) shall be  entitled to contribution from any person  who was
not guilty of such fraudulent misrepresentation. 

     Section 4.     TAX  REPRESENTATION.   The  Stockholder represents  and
warrants to ENSCO that, except as set forth on  Exhibit A hereto, it has no

<PAGE>


present plan or intention to sell, exchange, transfer by gift, or otherwise
dispose of the Merger Shares.

     Section 5.     HART-SCOTT-RODINO ANTITRUST IMPROVEMENTS  ACT OF  1976.
In connection  with the Merger, to  the extent required by  applicable law,
the Stockholder agrees promptly and  timely to file, or cause to  be filed,
all  notifications,  including  responses  to  requests  for   information,
required to  be filed by  it  by  the HSR Act.   The Stockholder  agrees to
cooperate with  ENSCO, Acquiror Sub and the Company to the extent necessary
to permit  them  to  prepare  their  separate filings  and  to  supply  any
additional  information  that  may  be  submitted  to  the   Federal  Trade
Commission  or  the Department  of  Justice  relating  to the  transactions
contemplated by the Merger Agreement under the antitrust laws.

     Section 6.     DISCLOSURE.   The Stockholder  will consult  with ENSCO
and  allow ENSCO  a reasonable time  to consider  and comment  on any press
release or public disclosure by the Stockholder  of matters related to this
Agreement,  the  Merger  Agreement or  the  Merger,  except  to the  extent
required  by applicable  law and  based on  the advice  of counsel.   ENSCO
agrees to  provide the Stockholder  a copy of  any press release  or public
disclosure  of any matters relating to this Agreement, the Merger Agreement
or  the Merger.   ENSCO will consult  with the  Stockholder and allow  it a
reasonable  time to consider  and comment  on any  press release  or public
disclosure  by ENSCO  of  matters related  to  this Agreement,  the  Merger
Agreement  or the Merger, except  to the extent  required by applicable law
and based on the advice of counsel.

     Section 7.     NO SOLICITATION. The Stockholder agrees that until July
31,  1996, it  will not  negotiate with  any person  other than  ENSCO with
respect to  the acquisition of the Company or the Target Common Stock owned
by  the Stockholder  and  it will  not,  and will  not  permit  any of  its
officers,  directors,  employees,   agents  or  representatives  (including
without  limitation,  investment  bankers,  attorneys  and accountants)  to
(a) initiate contact with, (b) make, solicit or encourage any inquiries  or
proposals, (c) enter into or participate in any discussions or negotiations
with, (d) disclose, directly or indirectly, any information not customarily
disclosed  concerning  the  business  and  properties  of  the  Company  or
Stockholder's interest in the  Company under the control of  Stockholder to
or (e)  afford any access to the Company s properties, books and records in
its possession  or under its control  to any person in  connection with any
possible proposal relating to  (i) the disposition of the Company s  or the
Stockholder's businesses  or substantially all of  their respective assets,
(ii) the acquisition of  equity or  debt securities of  the Company or  the
Stockholder,  including equity or debt  securities in the  Company owned by
the  Stockholder,  or   (iii) the  merger,  share   exchange  or   business
combination, or similar acquisition transaction of or involving the Company
or the Stockholder with any person other than ENSCO.  Until July  31, 1996,
the Stockholder  will immediately  notify  ENSCO orally,  and  subsequently
confirm in writing, all the relevant  details relating to all inquiries and
proposals which it may  receive relating to any such matters.    Until July
31,  1996,  the Stockholder  will  not,  and will  not  permit  any of  its
representatives,  at  any  time,  to  enter  into  or  participate  in  any
discussions or negotiations regarding,  or accept, any proposal for  such a
transaction  received by  them from  a third  party or  that a  third party
expresses a desire to communicate to it.
<PAGE>



     Section 8.     FURTHER ASSURANCES.    Each  party  shall  execute  and
deliver such additional instruments and other documents and shall take such
further actions as may be necessary or appropriate to effectuate, carry out
and comply  with all of  their obligations  under this Agreement.   Without
limiting the generality of the foregoing, none  of the parties hereto shall
enter  into any agreement or arrangement  (or alter, amend or terminate any
existing agreement or arrangement)  if such action would materially  impair
the ability of any  party to effectuate, carry  out or comply with all  the
terms  of this Agreement.  If requested  by ENSCO, the Stockholder and each
Selling Stockholder agrees to  execute a letter to ENSCO  representing that
the Stockholder  and/or  Selling  Stockholder  executing  such  letter  has
complied with its obligations hereunder as of the date of such letter. 

     Section 9.     REPRESENTATIONS   AND  WARRANTIES  OF   ENSCO.    ENSCO
represents  and  warrants  to the  Stockholder  as  follows:  Each of  this
Agreement  and  the Merger  Agreement  has been  approved by  the  Board of
Directors of ENSCO, and the Merger Agreement has been approved by the Board
of Directors  of Acquiror  Sub  and by  ENSCO as  the  sole stockholder  of
Acquiror Sub, in each  case representing all necessary corporate  action on
the part of ENSCO and Acquiror Sub (no action by the stockholders  of ENSCO
being required).  Each of this Agreement and the Merger  Agreement has been
duly executed and  delivered by a duly authorized officer  of ENSCO and, in
the case of the Merger Agreement, Acquiror Sub.  Each of this Agreement and
the Merger Agreement  constitutes a  valid and binding  agreement of  ENSCO
and, in the case of the Merger Agreement, Acquiror Sub, enforceable against
ENSCO and,  in the case of the Merger Agreement, Acquiror Sub in accordance
with its terms.

     Section 10.    REPRESENTATIONS AND WARRANTIES OF THE STOCKHOLDER.  The
Stockholder represents and warrants to ENSCO as follows: This Agreement has
been duly executed  and delivered  by the Stockholder  and constitutes  the
valid  and binding agreement  of the  Stockholder, enforceable  against the
Stockholder in  accordance with its terms.   The Block Shares  are the only
voting securities  of the Company owned (beneficially  or of record) by the
Stockholder,  and, except as provided  in this Agreement,  the Block Shares
are   not  subject  to  any  voting  trust,  voting  agreement  or  similar
arrangement whatsoever. 

     Section 11.    EFFECTIVENESS  AND  TERMINATION.    It  is a  condition
precedent  to the effectiveness of this Agreement that the Merger Agreement
shall have  been executed and delivered.  In the event the Merger Agreement
is  terminated   in  accordance  with  its  terms,   this  Agreement  shall
automatically terminate  and be of no  further force or effect.   Upon such
termination,  except for any  rights any party  may have in  respect of any
breach by any other party of its obligations hereunder, none of the parties
hereto shall have any further obligation or liability hereunder. 

     Section 12.    MISCELLANEOUS. 

     (a)  NOTICES,  ETC.     All  notices,  requests,   demands  or   other
communications required by   or  otherwise with respect  to this  Agreement
shall be in  writing and  shall be deemed  to have been  duly given to  any
party when  delivered personally  (by courier  service or  otherwise), when
delivered by telecopy and confirmed by return telecopy, or seven days after
<PAGE>



being  mailed by first-class  mail, postage  prepaid, in  each case  to the
applicable addresses set forth below:

     If to ENSCO: 

        ENSCO International Incorporated 
        2700 Fountain Place
        1445 Ross Avenue
        Dallas, TX 75202-2792
        Attn:     C. Christopher Gaut
        Telecopy: (214) 855-0300

     with a copy to: 

        Daniel W. Rabun, Esq.
        Baker & McKenzie
        2001 Ross Avenue, Suite 4500
        Dallas, TX 75201
        Telecopy: (214) 978-3099

     If to the Stockholder:

        Dual Invest AS
        P. O. Box 1611
        Vika 0119
        Oslo, Norway

     with a copy to:

        Martin B. McNamara
        Gibson, Dunn & Crutcher 
        1717 Main Street, Suite 5400
        Dallas, TX 75201-4605

or  to such other address as such  party shall have designated by notice so
given to each other party. 

     (b)  AMENDMENTS, WAIVERS,  ETC.  This  Agreement may  not be  amended,
changed, supplemented, waived or otherwise modified or terminated except by
an instrument in writing signed by ENSCO and the Stockholder.  

     (c)  SUCCESSORS AND ASSIGNS.  This Agreement shall be binding upon and
shall inure  to the benefit of and be  enforceable by the parties and their
respective successors and assigns, including without limitation in the case
of  any corporate  party  hereto  any  corporate  successor  by  merger  or
otherwise.

     (d)  ENTIRE AGREEMENT.   This Agreement embodies the  entire agreement
and understanding among the  parties relating to the subject  matter hereof
and supersedes  all prior  agreements and  understandings relating  to such
subject matter.  There  are no representations, warranties or  covenants by
the  parties  hereto  relating to  such  subject  matter  other than  those
expressly set forth in  this Agreement.  Notwithstanding the  foregoing, in
no event shall this Agreement  or the execution and delivery of  the Merger
Agreement  affect  the Stockholder's  obligations under  Section 2  of that
<PAGE>



certain letter agreement  between ENSCO and  the Stockholder dated  January
25, 1996.

     (e)  SEVERABILITY.  If any  term of this Agreement or  the application
thereof to any party or circumstance shall be held invalid or unenforceable
to any  extent, the remainder of this Agreement and the application of such
term to  the other parties  or circumstances shall not  be affected thereby
and shall be  enforced to the greatest extent  permitted by applicable law,
provided that in such event the parties shall negotiate in good faith in an
attempt  to agree to another provision (in  lieu of the term or application
held to be invalid or unenforceable) that will be valid and enforceable and
will carry out the parties  intentions hereunder. 

     (f)  REMEDIES CUMULATIVE.   All rights, powers  and remedies  provided
under this  Agreement or otherwise available in respect hereof at law or in
equity  shall  be  cumulative and  not  alternative,  and  the exercise  or
beginning of  the exercise of any  thereof by any party  shall not preclude
the simultaneous or later exercise of any other such right, power or remedy
by such party. 

     (g)  NO WAIVER.     The failure of  any party hereto  to exercise  any
right, power or remedy provided under this Agreement or otherwise available
in respect hereof at law or in equity, or to insist  upon compliance by any
other  party hereto  with  its obligations  hereunder,  and any  custom  or
practice  of the  parties  at variance  with  the terms  hereof,  shall not
constitute  a waiver  by such party  of its  right to exercise  any such or
other right, power or remedy or to demand such compliance. 

     (h)  THIRD PARTY  BENEFICIARIES.  Except for  the Selling Stockholders
and those persons for  whom indemnification is provided, this  Agreement is
not intended to be for  the benefit of and shall not be  enforceable by any
person or entity which is not a party hereto.  The Selling Stockholders and
those  persons for whom  indemnification is provided,  however, may enforce
this Agreement.

     (i)  GOVERNING  LAW.  This Agreement  is governed by  and construed in
accordance  with the  laws of  the  State of  Delaware  (without regard  to
conflict of laws principles).

     (j)  ARBITRATION.   (i)  Any dispute arising out of or related to this
Agreement  shall be finally settled  by arbitration in  accordance with the
Rules of  the  London Court  of International  Arbitration ("LCIA"),  which
rules  are deemed to be incorporated by  reference into this clause. Unless
the  parties otherwise agree, the  arbitration shall take  place in London,
England.  The parties hereby  agree to exclude any  right of application or
appeal to  the courts of said jurisdiction  in connection with any question
of law  arising in the course of reference out  of the award, in particular
the right of appeal under Section 1 of the Arbitration Act 1979 in relation
to any  award made by  the arbitrators and the  right to apply  to the High
Court under Section 2 of the  Arbitration Act 1979 for the determination of
any question  of law arising  in the course of  any arbitration proceedings
hereunder. Each of the parties shall appoint one arbitrator and  the two so
nominated  shall  in turn  choose a  third  arbitrator. If  the arbitrators
chosen by  the parties cannot agree  on the choice of  the third arbitrator
<PAGE>



within  a period of  fourteen (14)  days after  their nomination,  then the
third arbitrator shall be appointed by the Court of the LCIA.

          (ii) The arbitration shall be conducted in the English  language.
Relevant documents in other  languages shall be translated into  English if
the  arbitrators so  direct. In  arriving at  their award,  the arbitrators
shall give effect insofar as possible to the desire of the parties that the
dispute  or controversy  be  resolved in  accordance  with good  commercial
practice and principles of fairness and equity, and shall make every effort
to find a solution to the  dispute in the provisions of this  Agreement and
shall give  full effect to  all parts hereof.   In particular,  the parties
acknowledge that money damages are not an adequate remedy for violations of
Section 1 of this Agreement and ENSCO may, in its sole discretion, apply to
the  arbitral tribunal for specific performance in order to enforce Section
1 of  this Agreement and, to  the extent permitted by  applicable law, each
party waives any objection to the imposition of such relief.
 
          (iii)     To  the  extent  a  solution cannot  be  found  in  the
provisions  of this  Agreement,  the arbitrators  shall  apply the  law  of
Delaware.

          (iv) The  parties agree that after either has filed a Request for
Arbitration, they shall, upon request, make discovery and disclosure of all
written materials relevant to  the subject of the dispute.  The arbitrators
shall make the final determination as to any discovery disputes between the
parties. Examination of  witnesses at  the hearings by  the parties,  their
legal  counsel and  by  the  arbitrators  shall  be  permitted.  A  written
transcript of the hearing  may be ordered by  either of the parties  at its
own expense.

          (v)  The  award of a majority  of the arbitrators  shall be final
and binding  upon the  parties, and  shall be the  exclusive remedy  of the
parties for all claims, counterclaims,  issues or accountings presented  or
pled  to the arbitrators. Any award (other than specific performance) shall
be granted  and paid in U.S.  Dollars exclusive of any  deduction or offset
and shall include interest from  the date of breach or other  violations of
this  Agreement  until the  award  is  fully paid,  computed  at the  prime
commercial  lending rate  announced from  time to  time by  Citibank, N.A.,
adjusted daily. The arbitrators shall have the  authority to order that all
or  a part  of the  legal or  other costs,  fees and  expenses of  a party,
including fees  paid to  the LCIA and  the arbitrators  and the  reasonable
attorneys' fees, be paid by  another party. Judgment upon the award  may be
entered in any court having jurisdiction. An application may be made to any
such  court  for a  judicial  acceptance  of the  award  and  an order  for
enforcement.

          (vi) Nothing  in this section shall be  construed to preclude any
party  from seeking provisional remedies  at any stage  of the negotiation,
conciliation  or  arbitration proceedings,  including  but  not limited  to
temporary restraining orders  or preliminary injunctions from  any court of
competent jurisdiction  which  such party  in good  faith deems  reasonably
necessary for the protection  of its rights. Such preliminary  relief shall
not be sought as a means of avoiding conciliation or arbitration.

<PAGE>



     (l)  NAME, CAPTIONS, GENDER.  The name assigned this Agreement and the
section  captions used  herein are  for convenience  of reference  only and
shall not affect the  interpretation or construction hereof.   Whenever the
context  may   require,  any   pronoun  used   herein  shall  include   the
corresponding masculine, feminine or neuter forms. 

     (m)  COUNTERPARTS.   This Agreement may  be executed in  any number of
counterparts, each  of which shall be deemed to be  an original, but all of
which together constitute an instrument.  Each counterpart may consist of a
number of copies each signed by less that all,  but together signed by all,
the parties hereto. 










































<PAGE>




         IN WITNESS WHEREOF, the  parties have duly executed this  Agreement as
of the date first above written. 

                              ENSCO INTERNATIONAL INCORPORATED


                              By:  /s/ C. Christopher Gaut
                                   -------------------------------------
                                   C. Christopher Gaut, Vice President 
                                   and Chief Financial Officer

                              DUAL INVEST AS


                              By:  /s/ Magne Kristiansen
                                   -------------------------------------
                                   Magne Kristiansen
                                   Managing Director


The Company by execution of this Agreement acknowledges that the execution,
delivery and performance of this Agreement, as it may be  amended from time
to time, has been approved by its Board of Directors, and agrees to perform
all of its obligations under Section 1(e) of this Agreement.

                              DUAL DRILLING COMPANY


                              By:  /s/ David W. Skarke, Chairman
                                   -----------------------------
                                   David W. Skarke, Chairman

B. Skaugen Shipping AS by execution of this Agreement agrees to perform all
of its obligations as a Selling Stockholder under this Agreement.

                              B. SKAUGEN SHIPPING AS


                              By:  /s/ Richard Arnesen
                                   ------------------------------
                                   Richard Arnesen
                                   Managing Director

















                                    Exhibit A


(1)   The Stockholder may dispose of the Block Shares in the following manner:

      (a)  Sale of the Block Shares, from  time  to  time, directly or through
           broker-dealers or underwriters who may  act solely as agents or may
           acquire  shares  of  Common  Stock  as principals, in  all cases as
           designated by the Stockholder.

      (b)  Distributions of the Block Shares to the stockholders of the Stock-
           holder, including Skaugen.

(2)   Skaugen may dispose of the Block Shares  acquired  from the Stockholder,
      from time to  time, directly or  through  broker-dealers or underwriters
      who may act  solely as  agents or  may acquire shares of Common Stock as
      principals, in all cases as designated by Skaugen.










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