Registration No. 333-30811


               SECURITIES AND EXCHANGE COMMISSION
                     WASHINGTON, D.C.  20549
                                
                          ____________
                                
                                
                 POST-EFFECTIVE AMENDMENT NO. 1
                               to
                            FORM S-8
     REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
                                
                          ____________
                                
                                
              UNION TEXAS PETROLEUM HOLDINGS, INC.
     (Exact name of Registrant as specified in its charter)
                                
            Delaware                               76-0040040
(State or other jurisdiction of)           (IRS Identification No.)
 incorporation or organization)


                 c/o ATLANTIC RICHFIELD COMPANY
        515 South Flower Street, Los Angeles, CA    90071
                         (213) 486-3511
               (Address, including zip code, and
            telephone number including area code of
           registrant's principal executive offices)
                                
                                
        UNION TEXAS PETROLEUM DEFERRED COMPENSATION PLAN
                    (Full title of the plan)
                                
                          ____________

                            Copies to

         Diane A. Ward, Esq.                      Bruce G. Whitmore, Esq.
Senior Counsel - Securities & Finance         Senior Vice President, General
     Atlantic Richfield Company              Counsel and Corporate Secretary
      515 South Flower Street                   Atlantic Richfield Company
      Los Angeles, CA   90071                    515 South Flower Street
          (213) 486-2808                         Los Angeles, CA   90071
                                                     (213) 486-1774



                             PART II


     Following termination of the offering on June 29, 1998, the
date on which Union Texas Petroleum Holdings, Inc. was merged
into a wholly-owned, privately held subsidiary of Atlantic
Richfield Company, this Post-Effective Amendment No. 1 is being
filed to deregister Common Stock that remained unsold at such
date under the Union Texas Petroleum Deferred Compensation Plan.


Item 8.  Exhibits

     Exhibit No.         Description of Exhibit
     -----------         ----------------------

          3              Certificate of Merger

         24              Power of Attorney


Item 9.  Undertakings

     Pursuant to Registrant's undertaking to remove from
registration by means of a post-effective amendment any of the
securities remaining unsold at the termination of the offering,
registrant is filing this Post-Effective Amendment No. 1.


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                            SIGNATURE

      Pursuant to the requirements of the Securities Act of 1933,
the registrant certifies that it has reasonable grounds to
believe that it meets all of the requirements for filing on Form
S-8 and has duly caused this registration statement to be signed
on its behalf by the undersigned, thereunto duly authorized, in
the City of Los Angeles, State of California on the 30th day of
September, 1998.

                               UNION TEXAS PETROLEUM HOLDINGS, INC.

                                     * /s/ MICHAEL E. WILEY
                               By:_________________________________
                                      Michael E. Wiley
                                      Chairman of the Board and
                                      Chief Executive Officer


     Pursuant to the requirements of the Securities Act of 1933,
this registration statement has been signed below by the following
persons in the capacities and on the dates indicated.

       Signature                    Title                   Date
       ---------                    -----                   ----

*/s/ MICHAEL E. WILEY
________________________    Chairman of the Board,    September 30, 1998
   Michael E. Wiley         Chief Executive Officer
 (Principal executive       and Director
        officer)      


 /s/ MARK E. NICHOLLS
________________________    Senior Vice President,    September 30, 1998
   Mark E. Nicholls         Chief Financial Officer
 (Principal financial       and Controller
 officer and Principal
  accounting officer)


 */s/ MARIE L. KNOWLES
________________________    Director                  September 30, 1998
    Marie L. Knowles


*/s/ DONALD R. VOELTE, JR.
________________________    Director                  September 30, 1998
  Donald R. Voelte, Jr.


*/s/ WILLIAM E. WADE, JR.
________________________    Director                  September 30, 1998
  William E. Wade, Jr.


    /s/ MARK E. NICHOLLS
*By______________________
      Mark E. Nicholls
      Attorney-in-Fact

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                         PLAN SIGNATURE


     Pursuant to the requirements of the Securities Act of 1933,
the trustees (or other persons who administer the employee benefit
plan) have duly caused this Registration Statement to be signed
on its behalf by the undersigned, thereunto duly authorized, in
the City of Houston, State of Texas, on this 7th day of October,
1998.

                                   UNION TEXAS PETROLEUM
                                   DEFERRED COMPENSATION PLAN
                 
                                       /s/ ALAN R. CRAIN, JR.
                                   By:__________________________
                                           Alan R. Crain, Jr.


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