Exhibit 99.1

                                                          


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                                                                 News Release
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[GRAPHIC OMITTED] Union Texas Petroleum               1330 Post Oak Boulevard
                                                      P.O. Box 2120
                                                      Houston, Texas 77252-2120
                                                      (713)623-6544     



          UNION TEXAS PETROLEUM TO JOIN EXPLORATION VENTURE IN ALGERIA
                         


Contact:      Carol Cox
              713-968-2714

           Houston,  May 1, 1997 -- Union Texas Petroleum Holdings,  Inc. (NYSE:
UTH) today  announced that a wholly-owned  subsidiary has agreed in principle to
acquire a 30% working  interest in an exploration  joint venture in the Ghadames
Basin in Algeria. Definitive agreements are being prepared.
           Union Texas is  acquiring  its interest in two blocks in the Ghadames
Basin  from  Phillips  Petroleum  Company  Algeria,  a  subsidiary  of  Phillips
Petroleum Company,  which serves as operator and holds the remaining 70% working
interest.  Terms of the  acquisition,  which are subject to final approvals from
the Algerian Ministry of Energy, were not disclosed.
           The Bordj Messouda  Blocks 406B and 209 comprise a total of about 1.5
million  acres and are  located in  southeastern  Algeria.  Approximately  1,570
kilometers  of 2-D  seismic  data over the two blocks  have been  acquired.  The
venture plans to begin drilling the first of two exploratory  wells in the third
quarter of 1997.
           "This joint venture in the Bordj  Messouda  Blocks offers Union Texas
an outstanding opportunity to enter a high-quality exploration play in Algeria,"
said Union Texas Chairman and CEO John Whitmire. "Over the past several years, a
number  of very  significant  oil  discoveries  have  been  made in this  highly
prolific  area in  Algeria.  We  believe  this area holds  superior  exploration
potential and we are excited to join this venture."
           The  Bordj  Messouda   joint  venture   represents  the  seventh  new
exploration  venture that Union Texas has joined  since early 1997.  In previous
announcements,  Union  Texas has  reported  that it is joining  new  ventures in
China, Yemen, Jordan, Bolivia, Greece and Papua New Guinea.
           Union Texas also reported  today that it has received  final approval
from the  Natural  Resources  Authority  of the  Hashemite  Kingdom of Jordan to
acquire a 50% working interest from a subsidiary of Anadarko  Petroleum Corp. in
an oil and gas production-sharing contract in Jordan.






Two  stratigraphic  test wells are planned to be drilled in 1997 to evaluate the
area's  stratigraphic  column and  confirm the  presence of a working  petroleum
system.
           Union  Texas  also  is  pursuing  other  high-potential   exploration
ventures to further  expand its  exploration  portfolio.  The  company  plans to
participate in 25 to 30  exploration  wells during 1997,  including  exploration
programs  at its  producing  ventures  in the  U.K.  North  Sea,  Indonesia  and
Pakistan, up from 13 exploration wells in 1996.
           One  of the  largest  independent  producers  located  in  the  U.S.,
Houston-based Union Texas Petroleum  Holdings,  Inc. (NYSE:UTH) explores for and
produces oil and gas overseas  primarily in the U.K.  North Sea,  Indonesia  and
other strategic areas. The company has petrochemical operations in Louisiana.
           This news  release  contains  forward-looking  statements  within the
meaning  of  the  Securities  Litigation  Reform  Act  that  involve  risks  and
uncertainties,    including    exploration,    development,    operational   and
implementation  risks,  and  other  factors  described  from time to time in the
company's  publicly  available SEC reports,  which could cause actual results to
differ materially.
                                      # # #

For additional information, contact:
Carol Cox, media                          John Zimmerman, analysts and investors
713-968-2714                              713-968-2740

A map of the Bordj  Messouda  Blocks is  available  by  contacting  Union  Texas
Petroleum at (713) 968-2716.