UNION TEXAS PETROLEUM HOLDINGS INC
S-3/A, 1994-04-20
CRUDE PETROLEUM & NATURAL GAS
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<PAGE>   1
 
   
     AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON APRIL 20, 1994
    
 
                                                       REGISTRATION NO. 33-52683
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                             ---------------------
   
                                   AMENDMENT
    
 
   
                                    NO. 1 TO
    
                                    FORM S-3
 
            REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
                             ---------------------
 
<TABLE>
<S>                                                <C>                          <C>
     UNION TEXAS PETROLEUM HOLDINGS, INC.                  DELAWARE                  76-0040040
      UNION TEXAS EAST KALIMANTAN LIMITED                 THE BAHAMAS                    N/A
   UNION TEXAS PETROLEUM ENERGY CORPORATION                DELAWARE                  76-0351014
     UNION TEXAS INTERNATIONAL CORPORATION                 DELAWARE                  76-6044301
       UNION TEXAS PRODUCTS CORPORATION                    DELAWARE                  76-0040039
                 UNISTAR, INC.                             DELAWARE                  76-0108150
(EXACT NAME OF EACH REGISTRANT AS SPECIFIED IN          (STATE OR OTHER           (I.R.S. EMPLOYER
                  ITS CHARTER)                          JURISDICTION OF          IDENTIFICATION NO.)
                                                       INCORPORATION OR
                                                         ORGANIZATION)
              1330 POST OAK BOULEVARD                             NEWTON W. WILSON, III
               HOUSTON, TEXAS 77056                 GENERAL COUNSEL, VICE PRESIDENT -- ADMINISTRATION
                  (713) 623-6544                                      AND SECRETARY
(ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER,               1330 POST OAK BOULEVARD
      INCLUDING AREA CODE, OF EACH REGISTRANT'S                   HOUSTON, TEXAS 77056
           PRINCIPAL EXECUTIVE OFFICES)                              (713) 623-6544
                                                    (NAME, ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE
                                                   NUMBER, INCLUDING AREA CODE, OF AGENT FOR SERVICE)
</TABLE>
 
                             ---------------------
                                   Copies to:
 
                                 MARK ZVONKOVIC
                            CHRISTINE B. LAFOLLETTE
                             ANDREWS & KURTH L.L.P.
                              425 LEXINGTON AVENUE
                            NEW YORK, NEW YORK 10017
                                 (212) 850-2800
                                 JOHN B. TEHAN
                           SIMPSON THACHER & BARTLETT
                              425 LEXINGTON AVENUE
                            NEW YORK, NEW YORK 10017
                                 (212) 455-2000
 
                             ---------------------
 
     APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC: As soon as
practicable after the effective date of the Registration Statement.
 
     If the only securities being registered on this Form are being offered
pursuant to dividend or interest reinvestment plans, please check the following
box.  / /
 
     If any of the securities being registered on this Form are to be offered on
a delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, other than securities offered only in connection with dividend or interest
reinvestment plans, check the following box.  / /
 
   
                             ---------------------
    
     THE REGISTRANTS HEREBY AMEND THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANTS
SHALL FILE A FURTHER AMENDMENT WHICH SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(A) OF
THE SECURITIES ACT OF 1933 OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME
EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(A),
MAY DETERMINE.
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>   2
 
     Information contained herein is subject to completion or amendment. A
     registration statement relating to these securities has been filed with the
     Securities and Exchange Commission. These securities may
     not be sold nor may offers to buy be accepted prior to the time the
     registration statement becomes effective. This prospectus shall not
     constitute an offer to sell or the solicitation of an offer
     to buy nor shall there be any sale of these securities in any State in
     which such offer, solicitation or sale would be unlawful prior to
     registration or qualification under the securities laws of any such State.
 
   
                  SUBJECT TO COMPLETION, DATED APRIL 20, 1994
    
 
                                  $200,000,000
 
                             UNION TEXAS PETROLEUM HOLDINGS, INC.
                                   % SENIOR NOTES DUE 2004
 
                             ---------------------
 
   
     Interest on the Notes is payable semiannually on                and
                    of each year, commencing           , 1994. The Notes will
mature on                     , 2004. The Notes may be redeemed at any time, at
the option of the Company, in whole or in part, at a price equal to 100% of
their principal amount plus accrued interest plus a Make-Whole Premium
calculated by reference to the then prevailing Treasury Yield and the remaining
life of the Notes. The Notes will be senior unsecured obligations of the Company
and will rank pari passu in right of payment with the Company's obligations
under its credit facility and its 8.25% Senior Notes due 1999 and senior in
right of payment to all subordinated indebtedness of the Company. The Company's
obligations under the Notes will be unconditionally guaranteed by certain of its
subsidiaries for the purpose of assuring that the Notes will not be structurally
subordinated to the Company's obligations under its credit facility, 8.25%
Senior Notes due 1999 or any other funded indebtedness of the Company that is
guaranteed, from time to time, by subsidiaries of the Company. The Indenture
relating to the Notes will provide for the release and addition of subsidiaries
of the Company as guarantors and for the limitation of obligations of each
guarantor under certain circumstances. The guarantee of the Notes by any
subsidiary may be released if, but only so long as, no other funded indebtedness
of the Company is guaranteed by such subsidiary. See "Capitalization" and
"Description of the Notes." The Notes are not subject to any sinking fund. The
Notes have been approved for listing on the New York Stock Exchange subject to
official notice of issuance.
    
                             ---------------------
THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES
 AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS
  THE SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION
   PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS.
                ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.
                             ---------------------
 
<TABLE>
<CAPTION>
                                     INITIAL PUBLIC        UNDERWRITING          PROCEEDS TO
                                    OFFERING PRICE(1)       DISCOUNT(2)          COMPANY(3)
                                  ---------------------------------------------------------------
<S>                               <C>                  <C>                  <C>
Per Note..........................           %                   %                    %
Total.............................           $                   $                    $
</TABLE>
 
- ------------
 
(1) Plus accrued interest from                     , 1994.
 
(2) The Company has agreed to indemnify the Underwriters against certain
    liabilities, including liabilities under the Securities Act of 1933.
 
(3) Before deducting estimated expenses of $450,000 payable by the Company.
                             ---------------------
     The Notes are being offered by the Underwriters, subject to receipt and
acceptance by them and subject to their right to reject any order in whole or in
part. It is expected that the Notes will be ready for delivery in New York, New
York, on or about                     , 1994.
 
GOLDMAN, SACHS & CO.
                  CHEMICAL SECURITIES INC.
                                    J.P. MORGAN SECURITIES INC.
                                                  SALOMON BROTHERS INC
                             ---------------------
           The date of this Prospectus is                     , 1994.
<PAGE>   3
 
                             AVAILABLE INFORMATION
 
     Union Texas Petroleum Holdings, Inc. is subject to the informational
requirements of the Securities Exchange Act of 1934, as amended (the "Exchange
Act"), and in accordance therewith files reports, proxy statements and other
information with the Securities and Exchange Commission (the "Commission").
Reports, proxy statements and other information filed by the Company may be
inspected and copied at the public reference facilities maintained by the
Commission at Room 1024, Judiciary Plaza, 450 Fifth Street, N.W., Washington,
D.C. 20549, and at certain of the Commission's Regional Offices located at 7
World Trade Center, 13th Floor, New York, NY 10048 and 500 West Madison Street,
Suite 1400, Chicago, IL 60601. Copies of such materials can be obtained by mail
from the Public Reference Section of the Commission at 450 Fifth Street, N.W.,
Judiciary Plaza, Washington, D.C. 20549, at prescribed rates. In addition, the
Company's common stock, par value $.05 per share, is listed on the New York
Stock Exchange and the Pacific Stock Exchange, and the Company's 8.25% Senior
Notes due 1999 are listed on the New York Stock Exchange. The Company's reports,
proxy statements and other information filed under the Exchange Act may also be
inspected and copied at the offices of the New York Stock Exchange, 20 Broad
Street, New York, NY 10005 and the Pacific Stock Exchange, 301 Pine Street, San
Francisco, CA 94104.
 
     The Company has filed with the Commission a registration statement on Form
S-3 (herein, together with all amendments and exhibits, referred to as the
"Registration Statement") under the Securities Act of 1933, as amended (the
"Securities Act"). This Prospectus does not contain all of the information set
forth in the Registration Statement, certain parts of which are omitted in
accordance with the rules and regulations of the Commission. For further
information, reference is hereby made to the Registration Statement and to the
exhibits and schedules filed therewith. All of these documents may be inspected
without charge at the Commission's principal office in Washington, D.C., and
copies thereof may be obtained from the Commission at the prescribed rates or
may be examined without charge at the public reference facilities of the
Commission.
                             ---------------------
                INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE
 
     The following documents filed with the Commission (File No. 1-9019)
pursuant to the Exchange Act are incorporated herein by reference:
 
   
          (1) The Company's Annual Report on Form 10-K for the fiscal year ended
     December 31, 1993; and Current Reports on Form 8-K filed March 17, 1994 and
     March 31, 1994; and
     

          (2) All other documents filed by the Company pursuant to Section
     13(a), 13(c), 14 or 15(d) of the Exchange Act subsequent to the date of
     this Prospectus and prior to the termination of the offering made hereby.
 
     Any statement contained in a document all or a portion of which is
incorporated or deemed to be incorporated by reference herein, shall be deemed
to be modified or superseded for purposes of this Prospectus to the extent that
a statement contained herein or in any subsequently filed document which also is
or is deemed to be incorporated by reference herein modifies or supersedes such
statement. Any statement so modified shall not be deemed to constitute a part of
this Prospectus except as so modified, and any statement so superseded shall not
be deemed to constitute part of this Prospectus.
 
     The Company will provide without charge to each person, including any
beneficial owner, to whom a copy of this Prospectus is delivered, upon the
written or oral request of any such person, a copy of any or all documents which
are incorporated herein by reference, other than exhibits to such documents
(unless such exhibits are specifically incorporated by reference into such
documents). Requests should be directed to the Company, at its principal
executive offices at 1330 Post Oak Boulevard, Houston, TX 77056, Attention:
Corporate Secretary, telephone (713) 623-6544, or to the Company, c/o
Registration Department, Goldman, Sachs & Co., 85 Broad Street, New York, NY
10004, Attention: Donald T. Hansen, telephone (212) 902-6686.
                             ---------------------
     Quantities of natural gas are expressed in this Prospectus in terms of
thousand cubic feet ("Mcf"), million cubic feet ("MMcf") or billion cubic feet
("Bcf"). Oil is quantified in terms of barrels ("Bbls"). Gas is converted into a
barrel of oil equivalent ("boe") based on 5.8 Mcf of gas to one barrel of oil.
                             ---------------------
     IN CONNECTION WITH THE OFFERING, THE UNDERWRITERS MAY OVER-ALLOT OR EFFECT
TRANSACTIONS WHICH STABILIZE OR MAINTAIN THE MARKET PRICE OF THE NOTES AT A
LEVEL ABOVE THAT WHICH MIGHT OTHERWISE PREVAIL IN THE OPEN MARKET. SUCH
TRANSACTIONS MAY BE EFFECTED ON THE NEW YORK STOCK EXCHANGE OR OTHERWISE. SUCH
STABILIZING, IF COMMENCED, MAY BE DISCONTINUED AT ANY TIME.
 
                                        2
<PAGE>   4
 
                                  THE COMPANY
 
     The Company, the successor to a corporation founded in 1896, is an
independent (non-integrated) oil and gas company with worldwide operations. At
December 31, 1993, the Company had net proved oil and gas reserves of 381
million barrels of oil equivalent. The Company's average net daily oil and gas
production during 1993 was approximately 40,000 Bbls and 373 MMcf, respectively.
Substantially all of the Company's oil and gas activities are presently
conducted outside of the United States, primarily in the U.K. sector of the
North Sea, Indonesia and Pakistan. The Company also owns an interest in a
U.S.-based petrochemicals business.
 
     The Company's principal properties in the North Sea are interests in the
Piper, Claymore, Scapa, Saltire and Chanter oil fields, in each of which the
Company owns a 20% working interest, and the Sean gas fields, in which the
Company owns a 25% working interest. Major development projects undertaken by
the Company at the Piper and Saltire fields in the U.K. sector of the North Sea
were substantially completed in 1993. With the Piper, Saltire and Chanter fields
now on stream, net daily production from the Piper and Claymore blocks is more
than triple the 1992 average of 13,200 boe. During 1994, the Company expects its
net daily production from these blocks to average approximately 44,000 boe. The
Company's Indonesian activities consist primarily of its 37.81% working interest
in a joint venture that produces natural gas and, to a lesser extent, oil and
condensate from several fields in East Kalimantan, Indonesia. The natural gas is
converted into liquefied natural gas ("LNG") at the Indonesian-owned LNG plant
at Bontang Bay and is sold under contracts at prices that are based on a
"basket" of world crude oil prices. In 1993, shipments from this plant were 217
cargoes (96 Bcf net to the Company), and the plant has shipments of
approximately 240 cargoes (103 Bcf net to the Company) scheduled for 1994. The
Company holds its interests in this joint venture both directly through a wholly
owned subsidiary and indirectly through Unimar Company ("Unimar"), a 50/50
partnership with a subsidiary of a U.K. company, LASMO plc. The Company also
participates as operator through a joint venture for the exploration for, and
production of, oil and gas in Pakistan and has a 30% working interest in the
currently producing fields. In the United States, the Company operates the
Geismar ethylene plant near Baton Rouge, Louisiana, in which it owns a 41.67%
interest.
 
     The Company participates worldwide in new venture exploration for oil and
gas. Current activity includes interests in prospects in the United Kingdom,
eastern Indonesia, Pakistan, Alaska, offshore Argentina, and offshore Tunisia.
 
     The strategic focus of the Company's business plan through 1995 is to
concentrate approximately two-thirds of capital spending on developing the
Company's core holdings, while committing the balance of the capital budget to
an active exploration program targeting areas in which the Company has existing
interests or experience. Capital expenditures by the Company in 1993 totaled
$192 million, which included $45 million for the Company's large development
projects in the U.K. sector of the North Sea that were substantially completed
in 1993. For 1994, the Company has budgeted approximately $160 million for
capital expenditures. In addition, during 1994 the Company intends to evaluate
oil and gas reserve acquisition opportunities. The Company's business plan is
based upon numerous assumptions, including assumptions as to the prices received
for the Company's production, and there can be no assurance that such
assumptions will prove to be correct or that actual capital expenditures will be
as budgeted. See "Selected Consolidated Financial Data."
 
     As used herein, the "Company" means Union Texas Petroleum Holdings, Inc.
and its subsidiaries unless the context requires otherwise. Two limited
partnerships organized and controlled by an affiliate of Kohlberg Kravis Roberts
& Co. own approximately 38% of the Company's issued and outstanding common
stock. The address and telephone number of the Company's principal executive
offices are 1330 Post Oak Boulevard, Houston, TX 77056, (713) 623-6544.
 
                                        3
<PAGE>   5
 
                                USE OF PROCEEDS
 
   
     The net proceeds from the sale of the Notes offered hereby are estimated to
be approximately $     million (after deducting underwriting discounts and
commissions and offering expenses). The Company intends to use all such proceeds
to reduce the Company's debt under its $650 million unsecured revolving credit
facility (the "Credit Facility") and its uncommitted and unsecured lines of
credit (including approximately $3 million to be repaid to Morgan Guaranty Trust
Company of New York, an affiliate of J.P. Morgan Securities Inc., and $5 million
to be repaid to Chemical Bank, an affiliate of Chemical Securities Inc.). On
March 31, 1994, approximately $334 million was outstanding under the Credit
Facility and these lines of credit. At March 31, 1994, the Credit Facility and
the lines of credit bore interest at the weighted average rate of 4.23% per
annum and 4.14% per annum, respectively. The lenders' commitments under the
Credit Facility terminate on June 30, 1998 (unless earlier terminated under
certain circumstances).
    
 
                                        4
<PAGE>   6
 
                                 CAPITALIZATION
 
     The following table sets forth the consolidated capitalization of the
Company as of December 31,1993, and as adjusted to give effect to the sale of
the Notes offered hereby and the application of the net proceeds thereof
(assumed to be approximately $198 million) as described under "Use of Proceeds."
The following table should be read in conjunction with the Company's
consolidated financial statements and notes thereto incorporated by reference in
this Prospectus. See "Incorporation of Certain Documents by Reference."
 
   
<TABLE>
<CAPTION>
                                                               AT DECEMBER 31, 1993
                                                              -----------------------
                                                                                AS
                                                              ACTUAL          ADJUSTED
                                                              -------         -------
                                                                   (IN MILLIONS)
<S>                                                           <C>             <C>
Debt
  Short-term debt, including current maturities of
     long-term debt........................................   $    63         $    35
  Long-term debt
     Credit facility (a)...................................       280             110
     8.25% Senior Notes due 1999...........................       100             100
     Senior notes offered hereby...........................        --             200
     Other.................................................         7               7
                                                              -------         -------
          Total debt.......................................       450             452
                                                              -------         -------
Stockholders' equity
  Common stock, par value $.05 per share; 200,000,000
     shares
     authorized (b)........................................         4               4
  Capital in excess of par value...........................        20              20
  Retained earnings........................................       346             346
  Treasury stock (c).......................................        (3)             (3)
  Cumulative foreign exchange translation adjustment.......       (86)            (86)
                                                              -------         -------
       Total stockholders' equity..........................       281             281
                                                              -------         -------
          Total capitalization.............................   $   731         $   733
                                                              -------         -------
                                                              -------         -------
</TABLE>
    
 
- ---------------
 
   
(a) In April 1994, the Company signed a commitment letter with NationsBank of
    Texas N.A., as agent, for an amendment and restatement of its Credit
    Facility (the "Amended Credit Facility"). It is anticipated that the Amended
    Credit Facility would provide for up to $450 million in borrowings for
    general corporate purposes, consisting of a $350 million revolver, which
    reduces quarterly by $25 million beginning July 31, 1997 and has a final
    maturity of April 30, 1998, and a $100 million 364-day revolver, which
    provides for conversion of outstanding amounts to a one-year term loan
    maturing April 30, 1996, if drawn. The Amended Credit Facility is expected
    to provide for terms similar to those contained in the existing Credit
    Facility, except that borrowings under the Amended Credit Facility are not
    expected to be determined by reference to a borrowing base. The closing of
    the Amended Credit Facility, which is anticipated to occur in May 1994, is
    subject to negotiation of definitive agreements and is conditioned upon the
    issuance of the Notes. There can be no assurance that the Amended Credit
    Facility will be consummated. If not amended, the existing Credit Facility
    will remain in effect.
    
 
   
(b) As of December 31, 1993, there were 87,659,267 shares of Common Stock issued
    and outstanding. This amount does not reflect 2,819,708 shares issuable on
    the exercise of stock options granted by the Company.
    
 
   
(c) At December 31, 1993, the Company held in treasury 145,828 shares of Common
    Stock at cost.
    
 
                                        5
<PAGE>   7
 
                      SELECTED CONSOLIDATED FINANCIAL DATA
 
     The following selected consolidated financial information has been derived
from the consolidated financial statements of the Company for each of the five
years in the period ended December 31, 1993, which statements have been audited
by Price Waterhouse. The information set forth below should be read in
conjunction with the Company's consolidated financial statements and notes
thereto incorporated herein by reference and "Capitalization" included elsewhere
in this Prospectus. See "Incorporation of Certain Documents by Reference."
    
<TABLE>
<CAPTION>
                                                                                YEARS ENDED DECEMBER 31,
                                                               -----------------------------------------------------------
                                                                1989         1990         1991         1992         1993
                                                               -------      -------      -------      -------      -------
                                                                      (IN MILLIONS, EXCEPT PER SHARE AND RATIO DATA)
<S>                                                            <C>          <C>          <C>          <C>          <C>
STATEMENT OF CONSOLIDATED INCOME DATA
  Revenues
    Sales and operating revenues.............................. $   982      $ 1,283      $   977      $   669      $   682
    Business interruption insurance...........................     155           --           --           --           --
    Interest income and other revenues........................      23           49           92           32            6
    Net income of equity investees............................      17            1           11           13            9
                                                               -------      -------      -------      -------      -------
        Total.................................................   1,177        1,333        1,080          714          697
  Costs and other deductions
    Product costs and operating expenses......................     594          676          553          318          301
    Exploration expenses......................................      75           83           71           67           94
    Depreciation, depletion and amortization..................     154          186          125           77          243(c)
    Selling, general and administrative expenses..............      47           52           44           27           24
    Interest expense..........................................      55           62           47            4            6
    Preferred dividends of a subsidiary.......................       5            5            4            2            2
    Other credits, net........................................      --           --         (212)           6           --
                                                               -------      -------      -------      -------      -------
    Income before income taxes, extraordinary items and
      cumulative effect of changes in accounting principles...     247          269          448          213           27
    (Benefit from) provision for income taxes.................      74          153          168          103           (4)
                                                               -------      -------      -------      -------      -------
    Income before extraordinary items and cumulative effect of
      changes in accounting principles........................     173          116          280          110           31
    Extraordinary items(a)....................................      --           --           53          (20)          --
    Cumulative effect of changes in accounting principles.....      --           --           --          (76)          (4)
                                                               -------      -------      -------      -------      -------
  Net income.................................................. $   173      $   116      $   333      $    14      $    27
                                                               =======      =======      =======      =======      =======
  Net income (loss) per share of common stock................. $  1.49      $   .81      $  3.11      $  (.26)     $   .31
                                                               =======      =======      =======      =======      =======
  Common stock dividends per share............................ $   .20      $   .20      $   .20      $   .20      $   .20
  Average number of shares outstanding........................    84.0         84.6         85.2         85.8         87.2
STATEMENT OF CASH FLOWS DATA
  Net cash provided by operating activities................... $   233      $   367      $   272      $   241      $   191
                                                               -------      -------      -------      -------      -------
  Cash flows from investing activities
    Additions to property, plant and equipment................    (220)        (301)        (377)        (296)        (144)
    Cash provided (required) by equity investees..............      13          (22)         (31)          29           20
    Net proceeds from sales of businesses.....................      --           --          831          (18)         (43)
    Disposition (acquisition) of note receivable, net.........     (38)          42           --           --           --
                                                               -------      -------      -------      -------      -------
    Net cash provided (required) by investing activities......    (245)        (281)         423         (285)        (167)
                                                               -------      -------      -------      -------      -------
  Cash flows from financing activities
    Proceeds from issuance of long-term debt..................      --          151           31          465           30
    Payments to settle long-term debt and capitalized lease
      obligations.............................................      (4)          (4)        (172)        (529)        (118)
    Redemption of Preferred Auction Rate Stock................      --           --           --           --          (75)
    Redemption of preferred stock and common stock warrants...      --           --           --         (500)          --
    Purchase of treasury stock................................      (2)          --           (4)          --           --
    Proceeds from issuance of treasury stock..................      --           10           --           --           --
    Proceeds from issuance of common stock....................      --           --            9            4           18
    Short-term borrowings.....................................      --           --           --            6           55
    Dividends paid............................................     (58)         (58)         (58)         (47)         (17)
                                                               -------      -------      -------      -------      -------
      Net cash provided (required) by financing activities....     (64)          99         (194)        (601)        (107)
                                                               -------      -------      -------      -------      -------
  Net increase (decrease) in cash and cash equivalents........ $   (76)     $   185      $   501      $  (645)     $   (83)
                                                               =======      =======      =======      =======      =======
RATIO OF EARNINGS TO FIXED CHARGES(B).........................    3.60         3.47         4.94         7.93         1.61(c)
</TABLE>
    
 ------------
See accompanying notes.
 
                                        6
<PAGE>   8
 
<TABLE>
<CAPTION>
                                                                                   YEARS ENDED DECEMBER 31,
                                                                    -------------------------------------------------------
                                                                     1989        1990        1991        1992        1993
                                                                    -------     -------     -------     -------     -------
                                                                                         (IN MILLIONS)
<S>                                                                 <C>         <C>         <C>         <C>         <C>
SELECTED BALANCE SHEET DATA
  Cash and cash equivalents.......................................  $    61     $   245     $   746     $   101     $    18
  Working capital.................................................       (8)        114         576          34        (113)
  Property, plant and equipment (net).............................    1,253       1,487       1,157       1,199       1,089
  Total assets....................................................    1,721       2,102       2,247       1,581       1,339
  Short-term debt, including current
    maturities of long-term debt..................................        5           6         104           9          63
  Long-term debt..................................................      534         685         422         474         387
  Total debt......................................................      539         691         526         483         450
  Preferred stock.................................................      275         275         275          75          --
  Stockholders' equity............................................      275         375         674         269         281
</TABLE>
 
- ------------
 
(a) In the year ended December 31, 1991, the Company recognized an extraordinary
    tax benefit of $53 million from utilization of net operating loss
    carryforwards as a result of the sale of the domestic businesses. In the
    first quarter of 1992, the Company recognized an extraordinary loss of $20
    million as a result of the early redemption of debt.
 
(b) For purposes of computing the ratio of earnings to fixed charges, earnings
    consist of pretax income plus fixed charges. Fixed charges consist of
    interest expense, capitalized interest, amortization of discount and
    financing costs and the portion of rent expense which is deemed to be
    representative of the interest component of rent expense.
 
   
(c) During 1993, the Company recorded a non-cash charge to depreciation,
    depletion and amortization of $103 million pretax ($48 million after-tax)
    for the write-down of its investment in the U.K. North Sea's Piper field.
    Excluding the effect of the Piper write-down, the ratio of earnings to fixed
    charges for 1993 would have been 4.45. As adjusted to give effect to the
    sale of the Notes at an assumed interest rate of 8.6%, and the application
    of the proceeds therefrom, the ratio of earnings to fixed charges for the
    year ended December 31, 1993 would have been 1.29; excluding the effect of
    the Piper write-down, this pro forma ratio would have been 3.57.
    
 
     During 1991, the Company sold its domestic exploration and production
business and its domestic gas processing business for $861 million in cash. As a
result of the net gain on such sales, the Company's 1991 income increased by
$203 million. In 1992, the Company completed the early redemption of its Senior
Subordinated Reset Notes and 13% Subordinated Notes. As a result of this early
redemption, the results of operations for the year ended December 31, 1992
include an extraordinary charge of $20 million representing the debt premium and
the unamortized issuance cost. In 1992, the Company adopted, effective January
1, 1992, two new accounting standards for income taxes and postretirement
benefits, respectively. The adoption of these standards resulted in a cumulative
charge to net income of $76 million, representing the effect on prior years of
adopting the standards. Results in 1993 included certain significant items
related to the U.K. North Sea's Piper field write-down, the benefit of a U.K.
tax law change and the write-off of the Kuvlum prospect in Alaska. Also in 1993,
the Company adopted, effective January 1, 1993, the new accounting standard for
postemployment benefits, which resulted in a cumulative charge to net income of
$4 million, representing the estimated future obligation for those employees
currently under the long-term disability program. Excluding the special items
and accounting changes described above, net income for 1991, 1992 and 1993 would
have been $130 million, $109 million and $54 million, respectively. The 1993
earnings were negatively impacted by lower oil and Indonesian LNG prices and
decreased interest income on refunds of prior years' Petroleum Revenue Tax. The
1993 results benefited from the elimination of preferred stock dividends and
higher worldwide oil volumes.
 
     The Company cannot predict with any degree of certainty the prices it will
receive in 1994 and future years for its crude oil, LNG, natural gas and
ethylene. In addition, uncertainty in the Middle East, policies of oil exporting
countries and worldwide demand for products affect the Company's sales. The
Company's financial condition, operating results and liquidity may be materially
affected by any significant fluctuations in its sales prices. The Company's
ability to service its long-term obligations, including the Notes offered
hereby, and to internally generate funds for capital expenditures will be
similarly affected.
 
     The Company's overseas operations are subject to certain risks, including
expropriation of assets, governmental reinterpretation of applicable law and
contract terms, increases in taxes and government royalties, renegotiation of
contracts with foreign governments, foreign government approvals of lease,
permit or similar applications and of exploration and production plans,
political instability and disputes
 
                                        7
<PAGE>   9
 
between governments, payment delays, export restrictions, increased
environmental regulations, limits on allowable levels of exploration and
production and currency exchange losses and repatriation restrictions, as well
as changes in laws and policies governing operations of companies with overseas
operations generally. Foreign operations and investments may also be subject to
laws and policies of the United States affecting foreign trade, investment and
taxation that could affect the conduct and profitability of these operations.
 
     All of the Company's oil and gas activities are subject to the risks
normally associated with exploration for and production of oil and gas. Also,
the Company's activities are subject to stringent environmental regulations. The
Company believes that its operations and facilities are in general compliance
with existing environmental regulations. Nevertheless, the risks of substantive
costs and liabilities are inherent in operations such as the Company's, and
there can be no assurance that significant costs and liabilities will not be
incurred in the future.
 
                                        8
<PAGE>   10
 
                                 OPERATING DATA
 
     The following summary of operating information has been derived from the
supplementary oil and gas data to the Company's consolidated financial
statements and other records of the Company and should be read in conjunction
with such data in the Company's consolidated financial statements and notes
thereto incorporated herein by reference. See "Incorporation of Certain
Documents by Reference."
 
     The proved reserves and production statistics for the Company set forth
below are net of royalties and operating interests owned by others, unless
otherwise indicated.
 
<TABLE>
<CAPTION>
                                                                   AT DECEMBER 31,
                                                  --------------------------------------------------
                                                   1989       1990       1991       1992       1993
                                                  ------     ------     ------     ------     ------
<S>                                               <C>        <C>        <C>        <C>        <C>
NET PROVED DEVELOPED AND UNDEVELOPED OIL AND GAS
  RESERVES:
  Crude oil, including condensate and natural
     gas
       liquids (millions of barrels)
     United Kingdom.............................      79         81         79         76         69
     Indonesia..................................      11         11         13         13         18
     Pakistan...................................       8          8          7          6          5
     United States(a)...........................      25         27         --         --         --
     Other International(b).....................       8          7          8         --         --
     Equity Partnerships(c).....................       9          4          5          5          6
                                                  ------     ------     ------     ------     ------
          Total.................................     140        138        112        100         98
                                                  ------     ------     ------     ------     ------
                                                  ------     ------     ------     ------     ------
  Natural gas (billion cubic feet)
     United Kingdom.............................      90         86         93         90        139
     Indonesia..................................     917        864        879        798      1,009
     Pakistan...................................     101        116        108        101        102
     United States(a)...........................     399        423         --         --         --
     Equity Partnerships(c).....................     506        309        321        295        389
                                                  ------     ------     ------     ------     ------
          Total.................................   2,013      1,798      1,401      1,284      1,639
                                                  ------     ------     ------     ------     ------
                                                  ------     ------     ------     ------     ------
NET PROVED DEVELOPED OIL AND GAS RESERVES:
  Crude oil, including condensate and natural
     gas
       liquids (millions of barrels)
     United Kingdom.............................      33         31         28         25         34
     Indonesia..................................       9          8         12         12         15
     Pakistan...................................       5          4          3          3          3
     United States(a)...........................      21         22         --         --         --
     Other International(b).....................       7          6          7         --         --
     Equity Partnerships(c).....................       7          3          4          5          5
                                                  ------     ------     ------     ------     ------
          Total.................................      82         74         54         45         57
                                                  ------     ------     ------     ------     ------
                                                  ------     ------     ------     ------     ------
  Natural gas (billion cubic feet)
     United Kingdom.............................      86         82         78         75        131
     Indonesia..................................     788        679        737        725        785
     Pakistan...................................      36         41         32         35         39
     United States(a)...........................     289        278         --         --         --
     Equity Partnerships(c).....................     425        241        267        267        300
                                                  ------     ------     ------     ------     ------
          Total.................................   1,624      1,321      1,114      1,102      1,255
                                                  ------     ------     ------     ------     ------
                                                  ------     ------     ------     ------     ------
</TABLE>
 
- ------------
 
<TABLE>
<S>  <C>
(a)  U.S. offshore and onshore reserves were sold during 1991.
(b)  Primarily relates to a service contract in Argentina under which Unola de Argentina,
     Ltd., formerly a wholly owned subsidiary of the Company ("Unola"), was paid a fee based
     on production. The Company sold Unola, which held a minority interest in that service
     contract, in January 1992.
(c)  Includes the U.S. reserves attributable to the Company's domestic partnerships, Unimar
     Company and Unicon Producing Company, through 1989.
</TABLE>
 
                                        9
<PAGE>   11
 
<TABLE>
<CAPTION>
                                                  YEARS ENDED DECEMBER 31,
                                   -------------------------------------------------------
                                    1989        1990        1991        1992        1993
                                   -------     -------     -------     -------     -------
<S>                                <C>         <C>         <C>         <C>         <C>       
NET PRODUCTION PER DAY:
  Crude oil, including
     condensate
       (thousands of barrels)
     United Kingdom(a).........          3          12          14          13          27
     Indonesia.................          4           3           4           5           6
     Pakistan..................          4           5           5           5           5
     Other International(b)....          4           4           4          --          --
     United States(c)..........          9           9           5          --          --
     Equity Partnerships
       United States(d)........          1          --          --          --          --
       Indonesia...............          2           1           1           2           2
                                   -------     -------     -------     -------     -------
          Total................         27          34          33          25          40
                                   -------     -------     -------     -------     -------
                                   -------     -------     -------     -------     -------
  Natural gas (million cubic
     feet)
     United Kingdom(a).........          8          14          10           7           8
     Indonesia(e)..............        211         234         232         244         242
     Pakistan..................         13          28          38          39          43
     United States(c)..........        215         206          68          --          --
     Equity Partnerships
       United States(d)........         36          16          --          --          --
       Indonesia(e)............         70          78          77          81          80
                                   -------     -------     -------     -------     -------
          Total................        553         576         425         371         373
                                   -------     -------     -------     -------     -------
                                   -------     -------     -------     -------     -------
AVERAGE SALES PRICE:
  Crude oil, including
     condensate
       (dollars per barrel)
     United Kingdom(a).........    $ 17.90     $ 21.78     $ 18.75     $ 18.47     $ 15.10
     Indonesia.................      19.41       22.92       19.38       20.69       17.26
     Pakistan..................      13.86       19.24       15.60       16.32       15.04
     Other International(b)....       6.35        7.84        9.06          --          --
     United States(c)..........      17.72       20.41       19.06          --          --
     Equity Partnerships
       United States(d)........      17.32          --          --          --          --
       Indonesia...............      19.41       22.92       19.38       20.69       17.26
  Natural gas (dollars per
       thousand cubic feet)
     United Kingdom(a).........       3.02        3.26        3.74        3.69        2.49
     Indonesia(e)..............       2.90        3.52        3.35        3.22        3.00
     Pakistan..................        .93        1.13        1.40        1.09        1.26
     United States(c)..........       1.93        1.84        1.46          --          --
     Equity Partnerships
       United States(d)........       2.02        1.86          --          --          --
       Indonesia(e)............       2.90        3.52        3.35        3.22        3.00
</TABLE>
 
- ---------------
 
(a) Includes Piper activity after January 1993 and Claymore and Scapa activity
    from August 1989.
 
(b) Primarily represents a service fee received per barrel of production under a
    service contract in Argentina. The Company sold Unola, which held an
    interest in the service contract, in January 1992.
 
(c) Includes U.S. offshore and onshore results through April 5, 1991, and
    September 17, 1991, respectively.
 
(d) Represents U.S. activity through April and May 1990, respectively, for the
    Unimar and Unicon partnerships. Such production averaged less than 1,000
    barrels per day on an annual basis in 1990.
 
(e) Includes gas consumed in the operation of the liquefied natural gas plant in
    the Company's Indonesian joint venture.
 
                                       10
<PAGE>   12
 
                            DESCRIPTION OF THE NOTES
 
     The Notes will be issued pursuant to an Indenture to be dated as of
          1994, (the "Indenture") among the Company, the Guarantors referred to
below and The First National Bank of Chicago, as trustee (the "Trustee"), a copy
of the form of which is filed as an exhibit to the Registration Statement of
which this Prospectus is a part. The following summaries of certain provisions
of the Notes and the Indenture do not purport to be complete and are subject to,
and are qualified in their entirety by reference to, the Notes and the
Indenture, including the definitions therein of certain capitalized terms used
but not defined herein.
 
GENERAL
 
     Each Note will mature on           , 2004, and will bear interest at the
rate per annum stated on the cover page hereof from           , 1994, payable
semiannually on           and           of each year, commencing           ,
1994, to the person in whose name the Note is registered at the close of
business on the record date next preceding such interest payment date. Interest
will be computed on the basis of a 360-day year of twelve 30-day months.
Principal and interest will be payable at the offices of the Trustee and the
Paying Agents, provided that, at the option of the Company, payment of interest
will be made by check mailed to the address of the person entitled thereto as it
appears in the register of the Notes (the "Note Register") maintained by the
Registrar. The aggregate principal amount of the Notes that may be issued will
be limited to $200,000,000. The Notes will be transferable and exchangeable at
the office of the Registrar and any co-registrar and will be issued in fully
registered form, without coupons, in denominations of $1,000 and any whole
multiple thereof. The Company may require payment of a sum sufficient to cover
any transfer tax or other similar governmental charge payable in connection with
certain transfers and exchanges.
 
RANKING AND GUARANTEES
 
     The Notes will be senior unsecured obligations of the Company and will rank
pari passu in right of payment with the Company's obligations under the Credit
Facility and the 8.25% Senior Notes due 1999 and senior in right of payment to
all future indebtedness of the Company that is, by its terms, expressly
subordinated to the Notes.
 
     The following Subsidiaries of the Company, each of which also is a
guarantor of the Company's obligations under the Credit Facility (collectively,
the "Guarantors"), will unconditionally guarantee (the "Guarantees") on a joint
and several basis the Company's obligations to pay principal, premium, if any,
and interest with respect to the Notes: Union Texas East Kalimantan Limited,
Union Texas Petroleum Energy Corporation, Union Texas International Corporation,
Union Texas Products Corporation and Unistar, Inc. Each of the Guarantees will
be an unsecured obligation of the Guarantor providing such Guarantee, and will
rank pari passu with the guarantee provided by such Guarantor under the Credit
Facility and the 8.25% Senior Notes due 1999 and with all existing and future
unsecured indebtedness of such Guarantor that is not, by its terms, expressly
subordinated in right of payment to such Guarantee.
 
     Under the terms of the Indenture, a Guarantor may be released from its
Guarantee if such Guarantor is not a guarantor of any Funded Indebtedness of the
Company other than the Notes, provided that no Default or Event of Default under
the Indenture has occurred and is continuing. The Indenture will also provide
that if any Subsidiary of the Company guarantees any Funded Indebtedness of the
Company other than the Notes at any time subsequent to the date on which the
Notes are originally issued (including, without limitation, following any
release of such Subsidiary from its Guarantee as described above), then the
Company will cause the Notes to be equally and ratably guaranteed by such
Subsidiary.
 
     The obligations of each Guarantor are limited to the maximum amount as
will, after giving effect to all other contingent and fixed liabilities of such
Guarantor and after giving effect to any collections from or payments made by or
on behalf of any other Guarantor in respect of the obligations of such other
Guarantor under its Guarantee or pursuant to its contribution obligations under
the Indenture, result in the obligations of such Guarantor under its Guarantee
not constituting a fraudulent conveyance or fraudulent
 
                                       11
<PAGE>   13
 
transfer under federal, state or foreign law. Each Guarantor that makes a
payment or distribution under a Guarantee shall be entitled to a contribution
from each other Guarantor in a pro rata amount based on the Adjusted Net Assets
of each Guarantor.
 
     Although holders of the Notes will be direct creditors of a significant
portion of the Company's operating Subsidiaries by virtue of the Guarantees,
existing or future creditors of the Guarantors could avoid or subordinate
Guarantees, in whole or in part, under fraudulent conveyance laws to the extent
they were successful in establishing that (i) a Guarantee was incurred with
intent to hinder, delay or defraud any present or future creditor or
contemplated insolvency with a design to prefer one or more creditors to the
exclusion in whole or in part of others or (ii) any of the Guarantors did not
receive fair consideration or reasonably equivalent value for issuing its
Guarantee and that it (w) was insolvent at the time of such issuance, or (x) was
rendered insolvent by reason of such issuance, or (y) was engaged in a business
or transaction for which its assets constituted unreasonably small capital to
carry on its business, or (z) intended to incur, or believed that it would
incur, debts beyond its ability to pay such debts as they matured. Under the
circumstances referred to in clause (ii), but not clause (i), above, the
provision of the Indenture described in the previous paragraph generally would
limit the obligations of each Guarantor to the maximum amount that would not
constitute a fraudulent conveyance or transfer under applicable law. To the
extent any Guarantee was avoided as a fraudulent conveyance or held
unenforceable for any other reason (or limited pursuant to such provision) the
holders of the Notes would cease to have any claim (or, as applicable, have only
a limited claim) in respect of a Guarantor, and would be solely creditors of the
Company or any Guarantor whose Guarantee was not avoided or held unenforceable
(or to the extent not so limited). In such event (and to the extent of any such
limitation), the claims of the holders of the Notes would be subject to the
prior payment of all liabilities and preferred stock claims of the Subsidiaries
who were not valid Guarantors.
 
OPTIONAL REDEMPTION
 
     The Notes will be redeemable, at the option of the Company, at any time in
whole or from time to time in part, upon not less than 30 and not more than 60
days' notice mailed to each holder of Notes to be redeemed at the holder's
address appearing in the Note Register, on any date prior to maturity at a price
equal to 100% of the principal amount thereof plus accrued interest to the
Redemption Date (subject to the right of holders of record on the relevant
record date to receive interest due on an interest payment date that is on or
prior to the Redemption Date) plus a Make-Whole Premium, if any.
 
     The amount of the Make-Whole Premium with respect to any Note (or portion
thereof) to be redeemed will be equal to the excess, if any, of:
 
          (i) the sum of the present values, calculated as of the Redemption
     Date, of:
 
             (A) each interest payment that, but for such redemption, would have
        been payable on the Note (or portion thereof) being redeemed on each
        Interest Payment Date occurring after the Redemption Date (excluding any
        accrued interest for the period prior to the Redemption Date); and
 
             (B) the principal amount that, but for such redemption, would have
        been payable at the final maturity of the Note (or portion thereof)
        being redeemed;
 
     over
 
          (ii) the principal amount of the Note (or portion thereof) being
     redeemed.
 
The present values of interest and principal payments referred to in clause (i)
above will be determined in accordance with generally accepted principles of
financial analysis. Such present values will be calculated by discounting the
amount of each payment of interest or principal from the date that each such
payment would have been payable, but for the redemption, to the Redemption Date
at a discount rate equal to the Treasury Yield (as defined below).
 
                                       12
<PAGE>   14
 
     The Make-Whole Premium will be calculated by an independent investment
banking institution of national standing appointed by the Company; provided,
that if the Company fails to make such appointment at least 10 business days
prior to the Redemption Date, or if the institution so appointed is unwilling or
unable to make such calculation, such calculation will be made by Goldman, Sachs
& Co. or, if such firm is unwilling or unable to make such calculation, by an
independent investment banking institution of national standing appointed by the
Trustee (in any such case, an "Independent Investment Banker").
 
     For purposes of determining the Make-Whole Premium, "Treasury Yield" means
a rate of interest per annum equal to the weekly average yield to maturity of
United States Treasury Notes that have a constant maturity that corresponds to
the remaining term to maturity of the Notes, calculated to the nearest 1/12 of a
year (the "Remaining Term"). The Treasury Yield will be determined as of the
third business day immediately preceding the applicable Redemption Date.
 
     The weekly average yields of United States Treasury Notes will be
determined by reference to the most recent statistical release published by the
Federal Reserve Bank of New York and designated "H.15(519) Selected Interest
Rates" or any successor release (the "H.15 Statistical Release"). If the H.15
Statistical Release sets forth a weekly average yield for United States Treasury
Notes having a constant maturity that is the same as the Remaining Term, then
the Treasury Yield will be equal to such weekly average yield. In all other
cases, the Treasury Yield will be calculated by interpolation, on a
straight-line basis, between the weekly average yields on the United States
Treasury Notes that have a constant maturity closest to and greater than the
Remaining Term and the United States Treasury Notes that have a constant
maturity closest to and less than the Remaining Term (in each case as set forth
in the H.15 Statistical Release). Any weekly average yields so calculated by
interpolation will be rounded to the nearest 1/100 of 1%, with any figure of
1/200% or above being rounded upward. If weekly average yields for United States
Treasury Notes are not available in the H.15 Statistical Release or otherwise,
then the Treasury Yield will be calculated by interpolation of comparable rates
selected by the Independent Investment Banker.
 
     If less than all of the Notes are to be redeemed, the Trustee will select
the Notes to be redeemed pro rata or by lot. The Trustee may select for
redemption Notes and portions of Notes in amounts of $1,000 or whole multiples
of $1,000, provided that if all of the Notes of a holder are to be redeemed, the
entire outstanding amount of Notes held by such holder, even if not a whole
multiple of $1,000, will be redeemed.
 
     The Notes will not be entitled to the benefit of any sinking fund or other
mandatory redemption provisions.
 
CERTAIN COVENANTS
 
     Limitation on Liens. Nothing in the Indenture or the Notes will in any way
limit the amount of indebtedness or securities (other than the Notes) that the
Company or any of its Subsidiaries may issue, assume, guarantee or otherwise
incur. The Indenture will provide that the Company will not, and will not permit
any Restricted Subsidiary to, issue, assume or guarantee any Indebtedness for
borrowed money secured by any Lien on any property or asset now owned or
hereafter acquired by the Company or such Restricted Subsidiary without making
effective provision whereby any and all Notes then or thereafter outstanding
will be secured by a Lien equally and ratably with any and all other obligations
thereby secured for so long as any such obligations shall be so secured.
 
     The foregoing restriction will not, however, apply to:
 
          (a) Liens existing on the date on which the Notes are originally
     issued or provided for under the terms of agreements existing on such date;
 
          (b) Liens on property securing (i) all or any portion of the cost of
     exploration, drilling or development of such property, (ii) all or any
     portion of the cost of acquiring, constructing, altering, improving or
     repairing any property or assets, real or personal, or improvements used or
     to be used
 
                                       13
<PAGE>   15
 
     in connection with such property or (iii) Indebtedness incurred by the
     Company or any Restricted Subsidiary to provide funds for the activities
     set forth in clauses (i) and (ii) above;
 
          (c) Liens securing Indebtedness owed by a Restricted Subsidiary to the
     Company or to any other Restricted Subsidiary;
 
          (d) Liens on the property of any corporation or other entity existing
     at the time such corporation or other entity becomes a Subsidiary of the
     Company and not incurred as a result of (or in connection with or in
     anticipation of) such corporation or other entity becoming a Subsidiary of
     the Company, provided that such Liens do not extend to or cover any
     property or assets of the Company or any of its Subsidiaries other than the
     property so acquired;
 
          (e) Liens on any property securing (i) Indebtedness incurred in
     connection with the construction, installation or financing of pollution
     control or abatement facilities or other forms of industrial revenue bond
     financing or (ii) Indebtedness issued or guaranteed by the United States or
     any State thereof or any department, agency or instrumentality of either;
 
          (f) any Lien on any asset securing Non-Recourse Indebtedness of the
     Company or any Restricted Subsidiary or on any asset of Union Texas East
     Kalimantan Limited securing Joint Venture Indebtedness;
 
          (g) any Lien extending, renewing or replacing (or successive
     extensions, renewals or replacements of) any Lien of any type permitted
     under clauses (a) through (f) above, provided that such Lien extends to or
     covers only the property that is subject to the Lien being extended,
     renewed or replaced;
 
          (h) certain Liens arising in the ordinary course of business of the
     Company and the Restricted Subsidiaries; or
 
          (i) Liens (exclusive of any Lien of any type otherwise permitted under
     clauses (a) through (h) above) securing Indebtedness of the Company or any
     Restricted Subsidiary in an aggregate principal amount which, together with
     the aggregate amount of Attributable Indebtedness deemed to be outstanding
     in respect of all Sale/Leaseback Transactions entered into pursuant to
     clause (a) of the covenant described under "Limitation on Sale/Leaseback
     Transactions" below (exclusive of any such Sale/Leaseback Transactions
     otherwise permitted under clauses (a) through (h) above), does not at the
     time such Indebtedness is incurred exceed 10% of the Consolidated Net Worth
     of the Company (as shown in the most recent audited consolidated balance
     sheet of the Company and its Subsidiaries).
 
     The following types of transactions will not be prohibited or otherwise
limited by the foregoing covenant: (i) the sale, granting of Liens with respect
to, or other transfer of, crude oil, natural gas or other petroleum hydrocarbons
in place for a period of time until, or in an amount such that, the transferee
will realize therefrom a specified amount (however determined) of money or of
such crude oil, natural gas or other petroleum hydrocarbons; (ii) the sale or
other transfer of any other interest in property of the character commonly
referred to as a production payment, overriding royalty, forward sale or similar
interest; and (iii) the granting of Liens required by any contract or statute in
order to permit the Company or any Restricted Subsidiary to perform any contract
or subcontract made by it with or at the request of the United States or any
State thereof or any department, agency or instrumentality of either, or to
secure partial, progress, advance or other payments to the Company or any
Restricted Subsidiary by such governmental unit pursuant to the provisions of
any contract or statute.
 
     Limitation on Sale/Leaseback Transactions. The Indenture will provide that
the Company will not, and will not permit any Restricted Subsidiary to, enter
into any Sale/Leaseback Transaction with any person (other than the Company or a
Restricted Subsidiary) unless:
 
          (a) the Company or such Restricted Subsidiary would be entitled to
     incur Indebtedness, in a principal amount equal to the Attributable
     Indebtedness with respect to such Sale/Leaseback
 
                                       14
<PAGE>   16
 
     Transaction, secured by a Lien on the property subject to such
     Sale/Leaseback Transaction pursuant to the covenant described under
     "Limitation on Liens" above without equally and ratably securing the Notes
     pursuant to such covenant;
 
          (b) after the date on which the Notes are originally issued and within
     a period commencing six months prior to the consummation of such
     Sale/Leaseback Transaction and ending six months after the consummation
     thereof, the Company or such Restricted Subsidiary shall have expended for
     property used or to be used in the ordinary course of business of the
     Company and the Restricted Subsidiaries (including amounts expended for the
     exploration, drilling or development thereof, and for additions,
     alterations, repairs and improvements thereto) an amount equal to all or a
     portion of the net proceeds of such Sale/Leaseback Transaction and the
     Company shall have elected to designate such amount as a credit against
     such Sale/Leaseback Transaction (with any such amount not being so
     designated to be applied as set forth in clause (c) below); or
 
          (c) the Company, during the 12-month period after the effective date
     of such Sale/Leaseback Transaction, shall have applied to the voluntary
     defeasance or retirement of Notes or any Pari Passu Indebtedness an amount
     equal to the greater of the net proceeds of the sale or transfer of the
     property leased in such Sale/Leaseback Transaction and the fair value, as
     determined by the Board of Directors of the Company, of such property at
     the time of entering into such Sale/Leaseback Transaction (in either case
     adjusted to reflect the remaining term of the lease and any amount expended
     by the Company as set forth in clause (b) above), less an amount equal to
     the principal amount of Notes and Pari Passu Indebtedness voluntarily
     defeased or retired by the Company within such 12-month period and not
     designated as a credit against any other Sale/Leaseback Transaction entered
     into by the Company or any Restricted Subsidiary during such period.
 
LIMITATIONS ON MERGERS AND CONSOLIDATIONS
 
     The Indenture will provide that neither the Company nor any Guarantor
(other than any Guarantor that shall have been released from its Guarantee
pursuant to the provisions of the Indenture) will consolidate or merge with or
into any Person, or sell, lease, convey or otherwise dispose of all or
substantially all of its assets, or assign any of its obligations under the
Indenture or under the Notes, to any Person, unless: (i) the Person formed by or
surviving such consolidation or merger (if other than the Company or such
Guarantor, as the case may be), or to which such sale, lease, conveyance or
other disposition or assignment shall be made (collectively, the "Successor"),
is a corporation organized and existing under the laws of the United States or
any State thereof or the District of Columbia (or, in the case of a Guarantor
organized under the laws of a jurisdiction outside the United States, a
corporation organized and existing under the laws of such foreign jurisdiction)
and the Successor assumes by supplemental indenture in a form satisfactory to
the Trustee all of the obligations of the Company or such Guarantor, as the case
may be, under the Indenture and under the Notes; and (ii) immediately after
giving effect to such transaction, no Default or Event of Default shall have
occurred and be continuing.
 
CERTAIN DEFINITIONS
 
     The following is a summary of certain defined terms to be used in the
Indenture. Reference is made to the Indenture for the full definition of all
such terms and for the definitions of other capitalized terms used herein and
not defined below.
 
     "Adjusted Net Assets" of a Guarantor at any date shall mean the lesser of
(x) the amount by which the fair value of the property of such Guarantor at such
date exceeds the total amount of liabilities, including, without limitation, the
probable amount of contingent liabilities (after giving effect to all other
fixed and contingent liabilities incurred or assumed on such date), of such
Guarantor at such date, but excluding liabilities under the Guarantee of such
Guarantor, and (y) the amount by which the present fair saleable value of the
assets of such Guarantor at such date exceeds the amount that will be required
to pay the probable liability of such Guarantor on its debts (after giving
effect to all other fixed and contingent liabilities incurred or assumed on such
date and after giving effect to any collection from any
 
                                       15
<PAGE>   17
 
subsidiary of such Guarantor in respect of any obligations of such subsidiary
under the Guarantee of such Guarantor), excluding debt in respect of the
Guarantee of such Guarantor, as they become absolute and matured.
 
     "Attributable Indebtedness," when used with respect to any Sale/Leaseback
Transaction, means, as at the time of determination, the present value
(discounted at a rate equivalent to the Company's then current weighted average
cost of funds for borrowed money as at the time of determination, compounded on
a semiannual basis) of the total obligations of the lessee for rental payments
during the remaining term of the lease included in such Sale/Leaseback
Transaction (including any period for which such lease has been extended).
 
     "Capitalized Lease Obligation" of any Person means any obligation of such
Person to pay rent or other amounts under a lease of property, real or personal,
that is required to be capitalized for financial reporting purposes in
accordance with generally accepted accounting principles; and the amount of such
obligation shall be the capitalized amount thereof determined in accordance with
generally accepted accounting principles.
 
     "Consolidated Net Worth" of the Company means the consolidated
stockholders' equity of the Company and its Subsidiaries, as determined in
accordance with generally accepted accounting principles.
 
     "Funded Indebtedness" means all Indebtedness (including Indebtedness
incurred under any revolving credit, letter of credit or working capital
facility) that matures by its terms, or that is renewable at the option of any
obligor thereon to a date, more than one year after the date on which such
Indebtedness is originally incurred.
 
     "Hedging Obligations" of any Person means the obligations of such Person
pursuant to any interest rate swap agreement, foreign currency exchange
agreement, interest rate collar agreement, option or futures contract or other
similar agreement or arrangement relating to interest rates or foreign exchange
rates.
 
     "Indebtedness" of any Person at any date means, without duplication, (i)
all indebtedness of such Person for borrowed money (whether or not the recourse
of the lender is to the whole of the assets of such Person or only to a portion
thereof), (ii) all obligations of such Person evidenced by bonds, debentures,
notes or other similar instruments, (iii) all obligations of such Person in
respect of letters of credit or other similar instruments (or reimbursement
obligations with respect thereto), other than standby letters of credit incurred
by such Person in the ordinary course of business, (iv) all obligations of such
Person to pay the deferred and unpaid purchase price of property or services,
except trade payables and accrued expenses incurred in the ordinary course of
business, (v) all Capitalized Lease Obligations of such Person, (vi) all
Indebtedness (other than Joint Venture Indebtedness) of others secured by a Lien
on any asset of such Person, whether or not such Indebtedness is assumed by such
Person, (vii) all Indebtedness of others guaranteed by such Person to the extent
of such guarantee and (viii) all Hedging Obligations of such Person.
 
     "Joint Venture Indebtedness" means obligations secured by a Lien on the
interests of the Company or a Restricted Subsidiary, as the case may be, arising
under production sharing contracts or related supply contracts, if such Lien
covers ratably the interests of Pertamina, the Indonesian national oil company,
and all production sharing contractors thereunder.
 
     "Lien" means, with respect to any asset, any mortgage, lien, pledge,
charge, security interest or encumbrance of any kind in respect of such asset
(including, without limitation, any production payment, advance payment or
similar arrangement with respect to minerals in place), whether or not filed,
recorded or otherwise perfected under applicable law. For the purposes of the
Indenture, the Company or any Restricted Subsidiary shall be deemed to own
subject to a Lien any asset which it has acquired or holds subject to the
interest of a vendor or lessor under any conditional sale agreement, Capitalized
Lease Obligation (other than any Capitalized Lease Obligation relating to any
building, structure,
 
                                       16
<PAGE>   18
 
equipment or other property used or to be used in the ordinary course of
business of the Company and the Restricted Subsidiaries) or other title
retention agreement relating to such asset.
 
     "Non-Recourse Indebtedness" means, at any date, the aggregate amount at
such date of Indebtedness of the Company or a Restricted Subsidiary in respect
of which the recourse of the holder of such Indebtedness, whether direct or
indirect and whether contingent or otherwise, is effectively limited to
specified assets.
 
     "Pari Passu Indebtedness" means any Indebtedness of the Company, whether
outstanding on the date on which the Notes are originally issued or thereafter
created, incurred or assumed, unless, in the case of any particular
Indebtedness, the instrument creating or evidencing the same or pursuant to
which the same is outstanding expressly provides that such Indebtedness shall be
subordinated in right of payment to the Notes.
 
     "Restricted Subsidiary" means (i) each Subsidiary of the Company executing
the Indenture (and listed under "Ranking and Guarantees" above), (ii) Union
Texas Petroleum Limited, an English limited company, so long as it is a
Subsidiary of the Company and (iii) any Subsidiary of the Company that is a
successor corporation of any Subsidiary of the Company referred to in clauses
(i) and (ii). The status of any Subsidiary of the Company as a Restricted
Subsidiary shall continue irrespective of any release of any Guarantee provided
by such Subsidiary under the Indenture so long as it is a Subsidiary of the
Company.
 
     "Sale/Leaseback Transaction" means any arrangement with any Person
providing for the leasing by the Company or any Restricted Subsidiary, for a
period of more than three years, of any real or tangible personal property,
which property has been or is to be sold or transferred by the Company or such
Restricted Subsidiary to such Person in contemplation of such leasing.
 
EVENTS OF DEFAULT
 
     An Event of Default will be defined in the Indenture as being: (i) default
by the Company or any Guarantor for 30 days in payment of any interest on the
Notes; (ii) default by the Company or any Guarantor in any payment of principal
of or premium, if any, on the Notes; (iii) default by the Company or any
Guarantor in performance of any other covenant or agreement in the Notes, the
Guarantees or the Indenture which shall not have been remedied within 60 days
after receipt of written notice by the Trustee or by the holders of at least 25%
in principal amount of the Notes then outstanding; (iv) the acceleration of the
maturity of any Indebtedness (other than the Notes or any Non-Recourse
Indebtedness) of the Company or any Restricted Subsidiary having an outstanding
principal amount of $20 million or more, individually, or in the aggregate, or a
default in the payment of any principal or interest in respect of any
Indebtedness (other than the Notes or any Non-Recourse Indebtedness) of the
Company or any Restricted Subsidiary having an outstanding principal amount of
$20 million or more individually or in the aggregate and such default shall be
continuing for a period of 30 days without the Company or such Restricted
Subsidiary, as the case may be, effecting a cure of such default; (v) a judgment
or order for the payment of money in excess of $20 million (net of applicable
insurance coverage which is acknowledged in writing by the insurer) having been
rendered against the Company or any Restricted Subsidiary and such judgment or
order shall continue unsatisfied and unstayed for a period of 30 days; or (vi)
certain events involving bankruptcy, insolvency or reorganization of the Company
or any Restricted Subsidiary. Pursuant to the Indenture, Guarantors may not be
released from their Guarantees if a default or Event of Default has occurred and
is continuing. The obligations of any Subsidiary of the Company that becomes a
Guarantor are not dependent upon whether such Subsidiary becomes a Guarantor
prior to or after an Event of Default. The Indenture will provide that the
Trustee may withhold notice to the holders of the Notes of any default or Event
of Default (except in payment of principal of, or premium, if any, or interest
on the Notes) if the Trustee considers it in the interest of the holders of the
Notes to do so.
 
     The Indenture will provide that if an Event of Default occurs and is
continuing with respect to the Indenture, the Trustee or the holders of not less
than 25% in principal amount of the Notes outstanding
 
                                       17
<PAGE>   19
 
may declare the principal of and premium, if any, and accrued but unpaid
interest on all the Notes to be due and payable. Upon such a declaration, such
principal, premium, if any, and interest will be due and payable immediately. If
an Event of Default relating to certain events of bankruptcy, insolvency or
reorganization of the Company or any Restricted Subsidiary occurs and is
continuing, the principal of and premium, if any, and interest on all the Notes
will become and be immediately due and payable without any declaration or other
act on the part of the Trustee or any holders of the Notes. The amount due and
payable on the acceleration of any Note will be equal to 100% of the principal
amount of such Note, plus accrued interest to the date of payment. Under certain
circumstances, the holders of a majority in principal amount of the outstanding
Notes may rescind any such acceleration with respect to the Notes and its
consequences.
 
     The Indenture will provide that no holder of a Note may pursue any remedy
under the Indenture unless (i) the Trustee shall have received written notice of
a continuing Event of Default, (ii) the Trustee shall have received a request
from holders of at least 25% in principal amount of the Notes to pursue such
remedy, (iii) the Trustee shall have been offered indemnity reasonably
satisfactory to it and (iv) the Trustee shall have failed to act for a period of
60 days after receipt of such notice and offer of indemnity; however, such
provision does not affect the right of a holder of a Note to sue for enforcement
of any overdue payment thereon.
 
     The holders of a majority in principal amount of the Notes then outstanding
will have the right to direct the time, method and place of conducting any
proceeding for exercising any remedy available to the Trustee under the
Indenture, subject to certain limitations specified in the Indenture. The
Indenture will require the annual filing by the Company with the Trustee of a
written statement as to compliance with the covenants contained in the
Indenture.
 
MODIFICATION AND WAIVER
 
     The Indenture will provide that modifications and amendments to the
Indenture or the Notes may be made by the Company, the Guarantors and the
Trustee with the consent of the holders of a majority in principal amount of the
Notes then outstanding; provided that no such modification or amendment may,
without the consent of the holder of each Note then outstanding affected
thereby, (i) reduce the amount of Notes whose holders must consent to an
amendment, supplement or waiver; (ii) reduce the rate of or change the time for
payment of interest, including default interest, on any Note; (iii) reduce the
principal of or change the fixed maturity of any Note or alter the premium or
other provisions with respect to redemption; (iv) make any Note payable in money
other than that stated in the Note; (v) impair the right to institute suit for
the enforcement of any payment of principal of, or premium, if any, or interest
on, any Note; (vi) make any change in the percentage of principal amount of
Notes necessary to waive compliance with certain provisions of the Indenture; or
(vii) waive a continuing Default or Event of Default in the payment of principal
of, or premium, if any, or interest on the Securities. The Indenture will
provide that modifications and amendments of the Indenture may be made by the
Company, the Guarantors and the Trustee without the consent of any holders of
Notes in certain limited circumstances, including (a) to cure any ambiguity,
omission, defect or inconsistency, (b) to provide for the assumption of the
obligations of the Company or any Guarantor under the Indenture upon the merger,
consolidation or sale or other disposition of all or substantially all of the
assets of the Company or any such Guarantor, (c) to provide for uncertificated
Notes in addition to or in place of certificated Notes, (d) to reflect the
release of any Guarantor from its Guarantee, or the addition of any Subsidiary
of the Company as a Guarantor, in the manner provided by the Indenture, (e) to
comply with any requirement in order to effect or maintain the qualification of
the Indenture under the Trust Indenture Act of 1939 or (f) to make any change
that does not adversely affect the rights of any holder of Notes in any material
respect.
 
     The Indenture will provide that the holders of a majority in aggregate
principal amount of the Notes then outstanding may waive any existing default or
Event of Default under the Indenture, except a default or Event of Default in
the payment of principal, or premium, if any, or interest.
 
                                       18
<PAGE>   20
 
DISCHARGE AND TERMINATION
 
     Defeasance of Certain Obligations. The Indenture will provide that the
Company and the Guarantors may terminate certain of their respective obligations
under the Indenture, including those described under the section "Certain
Covenants," if (i) the Company irrevocably deposits in trust with the Trustee
money or U.S. Government Obligations sufficient to pay principal of and interest
on the Notes to maturity, and to pay all other sums payable by it hereunder,
provided that the Trustee shall have been irrevocably instructed to apply such
money or the proceeds of such U.S. Government Obligations to the payment of said
principal and interest with respect to the Notes as the same shall become due;
(ii) the Company delivers to the Trustee an Officer's Certificate stating that
all conditions precedent to satisfaction and discharge of the Indenture have
been complied with, and an Opinion of Counsel to the same effect; (iii) no
Default or Event of Default shall have occurred and be continuing on the date of
such deposit; and (iv) the Company shall have delivered to the Trustee an
Opinion of Counsel from nationally recognized counsel acceptable to the Trustee
or a tax ruling to the effect that the holders of the Notes will not recognize
income, gain or loss for Federal income tax purposes as a result of the
Company's exercise of its option under such section and will be subject to
Federal income tax on the same amount and in the same manner and at the same
times as would have been the case if such option had not been exercised. In
order to have money available on a payment date to pay principal of or interest
on the Notes, the U.S Government Obligations shall be payable as to principal or
interest on or before such payment date in such amounts as will provide the
necessary money. U.S. Government Obligations shall not be callable at the
issuer's option. The Company's payment obligation and the Guarantors' Guarantees
(among certain other obligations) shall survive until the Notes are no longer
outstanding.
 
     Discharge. The Indenture will provide that the Indenture shall cease to be
of further effect (subject to certain exceptions relating to compensation and
indemnity of the Trustee and repayment to the Company of excess money or
securities) when (i) either (A) all outstanding Notes theretofore authenticated
and issued (other than destroyed, lost or stolen Notes that have been replaced
or paid) have been delivered to the Trustee for cancellation; or (B) all
outstanding Notes not theretofore delivered to the Trustee for cancellation: (x)
have become due and payable, or (y) will become due and payable at their stated
maturity within one year or (z) are to be called for redemption within one year
under arrangements satisfactory to the Trustee for the giving of notice of
redemption by the Trustee in the name, and at the expense, of the Company, and
the Company, in the case of clause (x), (y) or (z) above, has deposited or
caused to be deposited with the Trustee as funds (immediately available to the
holders in the case of clause (x)) in trust for such purpose an amount which,
together with earnings thereon, will be sufficient to pay and discharge the
entire indebtedness on such Notes for principal, premium, if any, and interest
to the date of such deposit (in the case of Notes which have become due and
payable) or to the stated maturity or Redemption Date, as the case may be; (ii)
the Company has paid all other sums payable by it under the Indenture; and (iii)
the Company has delivered to the Trustee an Officer's Certificate stating that
all conditions precedent to satisfaction and discharge of the Indenture have
been complied with, together with an Opinion of Counsel to the same effect.
 
GOVERNING LAW
 
     The Indenture will provide that it will be governed by, and construed in
accordance with, the laws of the State of New York but without giving effect to
principles of conflicts of law.
 
THE TRUSTEE
 
     The First National Bank of Chicago will be the Trustee under the Indenture.
Its address is One First National Plaza, Suite 0126, Chicago, IL 60670-0126. The
Company has also appointed the Trustee as the initial Registrar and as one of
the initial Paying Agents under the Indenture.
 
     The Indenture will contain certain limitations on the right of the Trustee,
should it become a creditor of the Company, to obtain payment of claims in
certain cases, or to realize on certain property received in respect of any such
claim as security or otherwise. The Trustee is one of the lenders under the
 
                                       19
<PAGE>   21
 
Company's Credit Facility. The Trustee will be permitted to engage in other
transactions; however, if it acquires any conflicting interest (as defined in
the Trust Indenture Act of 1939), it must eliminate such conflict or resign.
 
     The Indenture will provide that in case an Event of Default shall occur
(and be continuing), the Trustee will be required to use the degree of care and
skill of a prudent man in the conduct of his own affairs. The Trustee will be
under no obligation to exercise any of its powers under the Indenture at the
request of any of the holders of the Notes, unless such holders shall have
offered the Trustee indemnity reasonably satisfactory to it.
 
AUTHENTICATION
 
     Two officers of the Company will sign the Notes on behalf of the Company,
and two officers of each Guarantor will sign the notation on the Notes relating
to the Guarantee of such Guarantor on behalf of such Guarantor, in each case by
manual or facsimile signature. The Company's seal will be reproduced on the
Notes and may be in facsimile form. A note will not be valid until the Trustee
or an authenticating agent manually signs the certificate of authentication on
the Note. Each Note will be dated the date of its authentication.
 
                                  UNDERWRITING
 
     Subject to the terms and conditions of the Underwriting Agreement, the
Company has agreed to sell to each of the Underwriters named below, and each of
the Underwriters has severally agreed to purchase from the Company, the
principal amount of the Notes set forth opposite its name below.
 
<TABLE>
<CAPTION>
                                                                             PRINCIPAL
                                                                              AMOUNT
         UNDERWRITER                                                         OF NOTES
         -----------                                                       -------------
    <S>                                                                    <C>
    Goldman, Sachs & Co. ................................................  $
    Chemical Securities Inc..............................................
    J.P. Morgan Securities Inc...........................................
    Salomon Brothers Inc.................................................
                                                                           -------------
        Total............................................................  $ 200,000,000
                                                                           -------------
                                                                           -------------
</TABLE>
 
     Under the terms and conditions of the Underwriting Agreement, the
Underwriters are committed to take and pay for all of the Notes offered hereby,
if any are taken.
 
     The Underwriters propose to offer the Notes in part directly to the public
at the initial public offering price set forth on the cover page of this
Prospectus and in part to certain securities dealers at such price less a
concession of           % of the principal amount of the Notes. The Underwriters
may allow, and such dealers may reallow, a concession not to exceed           %
of the principal amount of the Notes to certain brokers and dealers. After the
Notes are released for sale to the public, the offering price and other selling
terms may from time to time be varied by the Underwriters.
 
   
     The Notes are a new issue of securities with no established trading market.
The Company has been advised by the Underwriters that the Underwriters intend to
make a market in the Notes but are not obligated to do so and may discontinue
market making at any time without notice. Although the Notes have been approved
for listing on the New York Stock Exchange subject to official notice of
issuance, no assurance can be given that an active public trading market for the
Notes will develop. The absence of an active public trading market could have an
adverse effect on the liquidity and value of the Notes.
    
 
     The Company has agreed to indemnify the Underwriters against certain
liabilities, including liabilities under the Securities Act of 1933.
 
     The Underwriters have in the past and may in the future provide investment
banking and other related services to the Company and its affiliates in the
ordinary course of their respective businesses. In
 
                                       20
<PAGE>   22
 
addition, in the ordinary course of their respective businesses, affiliates of
Chemical Securities Inc. and J.P. Morgan Securities Inc. have engaged, and may
in the future engage, in commercial banking transactions with the Company and
its affiliates. As discussed under "Use of Proceeds," the Company intends to use
a portion of the proceeds from the offering of the Notes to repay certain bank
debt, and affiliates of Chemical Securities Inc. and J.P. Morgan Securities Inc.
are, among others, lenders of such bank debt.
 
                                 LEGAL MATTERS
 
     Certain legal matters regarding the issuance of the Notes have been passed
upon by the Company's General Counsel, Newton W. Wilson, III. As of the date of
this Prospectus, Mr. Wilson owned approximately 6,400 shares of Common Stock of
the Company (excluding shares held indirectly by Mr. Wilson in the Company's
Savings Plan for Salaried Employees) and options to purchase 143,053 shares of
Common Stock (including options which are not yet vested). Certain legal matters
in connection with the Notes will also be passed upon for the Company by Andrews
& Kurth L.L.P., Houston, Texas, and for the Underwriters by Simpson Thacher &
Bartlett (a partnership which includes professional corporations), New York, New
York.
 
                                    EXPERTS
 
     The financial statements incorporated in this Prospectus by reference to
the Annual Report on Form 10-K of Union Texas Petroleum Holdings, Inc. for the
year ended December 31, 1993, have been so incorporated in reliance on the
report of Price Waterhouse, independent accountants, given on the authority of
said firm as experts in auditing and accounting.
 
                                       21
<PAGE>   23
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
NO PERSON HAS BEEN AUTHORIZED TO GIVE ANY INFORMATION OR TO MAKE ANY
REPRESENTATIONS OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS AND, IF GIVEN OR
MADE, SUCH INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED UPON AS HAVING BEEN
AUTHORIZED. THIS PROSPECTUS DOES NOT CONSTITUTE AN OFFER TO SELL OR THE
SOLICITATION OF AN OFFER TO BUY ANY SECURITIES OTHER THAN THE SECURITIES
DESCRIBED IN THIS PROSPECTUS OR AN OFFER TO SELL OR THE SOLICITATION OF AN OFFER
TO BUY SUCH SECURITIES IN ANY CIRCUMSTANCES IN WHICH SUCH OFFER OR SOLICITATION
IS UNLAWFUL. NEITHER THE DELIVERY OF THIS PROSPECTUS NOR ANY SALE MADE HEREUNDER
SHALL, UNDER ANY CIRCUMSTANCES, CREATE ANY IMPLICATION THAT THERE HAS BEEN NO
CHANGE IN THE AFFAIRS OF THE COMPANY SINCE THE DATE HEREOF OR THAT THE
INFORMATION CONTAINED HEREIN IS CORRECT AS OF ANY TIME SUBSEQUENT TO ITS DATE.
 
                             ---------------------

                               TABLE OF CONTENTS
 
   
<TABLE>
<CAPTION>
                                         PAGE
                                         ---
<S>                                      <C>
Available Information..................    2
Incorporation of Certain Documents by
  Reference............................    2
The Company............................    3
Use of Proceeds........................    4
Capitalization.........................    5
Selected Consolidated Financial Data...    6
Operating Data.........................    9
Description of the Notes...............   11
Underwriting...........................   20
Legal Matters..........................   21
Experts................................   21
</TABLE>
    
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------


- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                                  $200,000,000
 
                                  UNION TEXAS
                            PETROLEUM HOLDINGS, INC.
 
                                        % SENIOR NOTES
                                    DUE 2004
 
                             ---------------------

              (LOGO)         UNION TEXAS PETROLEUM

                             ---------------------
                              GOLDMAN, SACHS & CO.
                            CHEMICAL SECURITIES INC.
                          J.P. MORGAN SECURITIES INC.
                              SALOMON BROTHERS INC
 

- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>   24
 
                                    PART II
 
                     INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 14. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION
 
     An itemized statement of the estimated amount of all expenses in connection
with the distribution of the securities registered hereby, all of which will be
paid by the Company, is as follows:
 
<TABLE>
        <S>                                                                <C>
        Registration fee.................................................  $  68,966
        Blue Sky fees and expenses.......................................     15,000
        Printing and engraving expenses..................................     80,000
        Legal fees and expenses..........................................    100,000
        Accounting fees and expenses.....................................    100,000
        Rating agencies' fees and expenses...............................     70,000
        Trustee's and registrar's fees...................................      4,000
        Miscellaneous fees and expenses..................................     12,034
                                                                           ---------
               Total.....................................................  $ 450,000
                                                                           ---------
                                                                           ---------
</TABLE>
 
ITEM 15. INDEMNIFICATION OF DIRECTORS AND OFFICERS
 
     Section 145 of the Delaware General Corporation Law, inter alia, empowers a
Delaware corporation to indemnify any person who was or is a party or is
threatened to be made a party to any threatened, pending or completed action,
suit or proceeding (other than an action by or in the right of the corporation)
by reason of the fact that such person is or was a director, officer, employee
or agent of the corporation or is or was serving at the request of the
corporation as a director, officer, employee or agent of another corporation or
other enterprise, against expenses (including attorneys' fees), judgments, fines
and amounts paid in settlement actually and reasonably incurred by him in
connection with such action, suit or proceeding if he acted in good faith and in
a manner he reasonably believed to be in or not opposed to the best interests of
the corporation, and, with respect to any criminal action or proceeding, had no
reasonable cause to believe his conduct was unlawful. Similar indemnity is
authorized for such persons against expenses (including attorneys' fees)
actually and reasonably incurred in connection with the defense or settlement of
any such threatened, pending or completed action or suit if such person acted in
good faith and in a manner he reasonably believed to be in or not opposed to the
best interests of the corporation, and provided further that (unless a court of
competent jurisdiction otherwise provides) such person shall not have been
adjudged liable to the corporation. Any such indemnification may be made only as
authorized in each specific case upon a determination by the stockholders or
disinterested directors or by independent legal counsel in a written opinion
that indemnification is proper because the indemnitee has met the applicable
standard of conduct.
 
     Section 145 further authorizes a corporation to purchase and maintain
insurance on behalf of any person who is or was a director, officer, employee or
agent of the corporation, or is or was serving at the request of the corporation
as a director, officer, employee or agent of another corporation or enterprise,
against any liability asserted against him and incurred by him in any such
capacity, or arising out of his status as such, whether or not the corporation
would otherwise have the power to indemnify him under Section 145. The Company
maintains policies insuring its and its subsidiaries' officers and directors
against certain liabilities for actions taken in such capacities, including
liabilities under the Securities Act.
 
     The Bylaws for each Registrant other than Union Texas East Kalimantan
Limited provide for indemnification of the directors and officers of the
Registrant to the full extent permitted by law, as now in effect or later
amended. In addition, the Bylaws provide for indemnification against expenses
incurred by a director or officer to be paid by the Registrant at reasonable
intervals in advance of the final disposition of such action, suit or proceeding
upon receipt of an undertaking by or on behalf of the director or officer to
repay such amount if it shall be ultimately determined that he is not entitled
to be indemnified by the Registrant. The Bylaws further provide for a
contractual cause of action on the part of directors and officers of each
Registrant for indemnification claims which have not been paid by the
Registrant. The
 
                                      II-1
<PAGE>   25
 
Articles of Association of Union Texas East Kalimantan Limited provide for
indemnification of directors and officers except for wilful neglect or default.
 
     The Company also has provided liability insurance for each director and
officer for certain losses arising from claims or charges against them while
acting in their capacities as directors or officers of each Registrant.
 
     The Certificate of Incorporation for each Registration other than Union
Texas East Kalimantan Limited limits under certain circumstances the liability
of each Registrant's directors for a breach of their fiduciary duty as
directors. These provisions do not eliminate the liability of a director (i) for
a breach of the director's duty of loyalty to the Registrant or its
stockholders, (ii) for acts or omissions not in good faith or which involve
intentional misconduct or a knowing violation of law, (iii) under Section 174 of
the Delaware General Corporation Law (relating to the declaration of dividends
and purchase or redemption of shares in violation of the Delaware General
Corporation Law) or (iv) for any transaction from which the director derived an
improper personal benefit.
 
ITEM 16. EXHIBITS
 
<TABLE>
          <S>        <C>
           *1.1      -- Form of Underwriting Agreement.
            3.1      -- Certificate of Incorporation of each Registrant (the Company's
                        Certificate of Incorporation is incorporated by reference from the
                        identical exhibit number in Post Effective Amendment No. 1 to the
                        Company's Registration Statement No. 33-12800; the Guarantors'
                        certificates of incorporation are incorporated by reference from the
                        identical exhibit number in the Company's Registration Statement No.
                        33-52400).
           *3.2      -- Bylaws, as amended, of Union Texas Petroleum Energy Corporation.
           *3.3      -- Bylaws, as amended, of Union Texas International Corporation.
           *3.4      -- Bylaws, as amended, of Union Texas Products Corporation.
            3.5      -- Bylaws of each other Registrant, as amended (the Company's Bylaws
                        were filed as Exhibit 3.1 to the Company's Form 8-K dated February 4,
                        1993 (Commission File No. 1-9019) and are incorporated herein by
                        reference, and the remaining Guarantors' Bylaws were filed as Exhibit
                        3.2 to the Company's Registration Statement No. 33-52400 and are
                        incorporated herein by reference).
           *4.1      -- Form of Indenture.
           *4.2      -- Form of Note (included in Exhibit 4.1).
           *5.1      -- Opinion of legal counsel regarding legality of securities being
                        registered.
           10.1      -- Credit Agreement, dated as of August 31, 1992, among the Company, the
                        Banks listed therein and NationsBank of Texas, N.A., as Agent, and
                        The First National Bank of Chicago and Union Bank of Switzerland,
                        Houston Agency, as Co-Agents (incorporated by reference from the
                        identical exhibit number in the Company's Registration Statement No.
                        33-52400).
           10.2      -- First Amendment to Credit Agreement, dated as of September 30, 1992,
                        among the Company, the Banks listed therein and NationsBank of Texas,
                        N.A., as Agent, and The First National Bank of Chicago and Union Bank
                        of Switzerland, Houston Agency, as Co-Agents (incorporated by
                        reference from the identical exhibit number in the Company's
                        Registration Statement No. 33-52400).
           10.3      -- The Indenture for the 8.25% Notes, dated as of November 15, 1992,
                        among the Company, the Guarantors and State Street Bank and Trust
                        Company (incorporated by reference from Exhibit 4.1 in Amendment No.
                        2 to the Company's Registration Statement No. 33-52400).
          *12.1      -- Computation of Ratio of Earnings to Fixed Charges.
</TABLE>
 
                                      II-2
<PAGE>   26
 
   
<TABLE>
<S>                  <C>
          **12.2     -- Computation of Pro Forma Ratio of Earnings to Fixed Charges.
          **23.1     -- Consent of Price Waterhouse.
          *23.2      -- Consent of legal counsel (included in Exhibit 5.1).
          *24.1      -- Power of Attorney included in Part II of the Registration Statement.
          *25.1      -- Statement of Eligibility of Trustee on Form T-1.
</TABLE>
    
 
- ------------
 
   
 * Previously filed.
    
 
   
** Filed herewith.
    
 
ITEM 17. UNDERTAKINGS
 
     Each undersigned Registrant hereby undertakes that, for purposes of
determining any liability under the Securities Act, each filing of the
registrant's annual report pursuant to Section 13(a) or 15(d) of the Exchange
Act (and, where applicable, each filing of an employee benefit plan's annual
report pursuant to Section 15(d) of the Securities Exchange Act of 1934) that is
incorporated by reference in the Registration Statement shall be deemed to be a
new registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.
 
     Each undersigned Registrant hereby undertakes that:
 
          (1) For purposes of determining any liability under the Securities Act
     of 1933, the information omitted from the form of prospectus filed as part
     of this registration statement in reliance upon Rule 430A and contained in
     a form of prospectus filed by the registrant pursuant to Rule 424(b)(1) or
     (4) or 497(h) under the Securities Act shall be deemed to be part of this
     Registration Statement as of the time it was declared effective.
 
          (2) For the purpose of determining any liability under the Securities
     Act of 1933, each post-effective amendment that contains a form of
     prospectus shall be deemed to be a new registration statement relating to
     the securities offered therein, and the offering of such securities at that
     time shall be deemed to be the initial bona fide offering thereof.
 
   
     Insofar as indemnification for liabilities arising under the Securities Act
of 1933 may be permitted to directors, officers and controlling persons of each
Registrant pursuant to the provisions in Item 15 above, or otherwise, each
Registrant has been advised that in the opinion of the Securities and Exchange
Commission such indemnification is against public policy as expressed in the
Securities Act and is, therefore, unenforceable. In the event that a claim for
indemnification against such liabilities (other than the payment by a Registrant
of expenses incurred or paid by a director, officer or controlling person of
such Registrant in the successful defense of any action, suit or proceeding) is
asserted by such director, officer or controlling person in connection with the
securities being registered, such Registrant will, unless in the opinion of its
counsel the matter has been settled by controlling precedent, submit to a court
of appropriate jurisdiction the question whether such indemnification by it is
against public policy as expressed in the Securities Act and will be governed by
the final adjudication of such issue.
    
 
                                      II-3
<PAGE>   27
 
                                   SIGNATURES
 
   
     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-3 AND HAS DULY CAUSED THIS AMENDMENT TO ITS
REGISTRATION STATEMENT TO BE SIGNED ON ITS BEHALF BY THE UNDERSIGNED, THEREUNTO
DULY AUTHORIZED IN THE CITY OF HOUSTON, STATE OF TEXAS, ON APRIL 19, 1994.
    
 
                                          UNION TEXAS PETROLEUM HOLDINGS, INC.
 
                                          By:     /s/ LARRY D. KALMBACH
                                                     Larry D. Kalmbach
                                                 Vice President -- Finance
 
   
     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.
    
 
   
<TABLE>
<CAPTION>
                  SIGNATURE                                TITLE                   DATE
- ---------------------------------------------  ------------------------------------------------
<C>                                            <S>                          <C>
                          *                    Chairman of the Board and         April 19, 1994
             (A. Clark Johnson)                  Chief Executive Officer
                                                 (Principal Executive
                                                 Officer)
               /s/  LARRY D. KALMBACH          Vice President -- Finance         April 19, 1994
             (Larry D. Kalmbach)                 (Principal Financial
                                                 Officer)
                          *                    Vice President and Controller     April 19, 1994
            (Donald M. McMullan)                 (Principal Accounting
                                                 Officer)
                          *                    Director                          April 19, 1994
               (Glenn A. Cox)
                          *                    Director                          April 19, 1994
                (Saul A. Fox)
                                               Director
             (Edward A. Gilhuly)
                          *                    Director                          April 19, 1994
           (James H. Greene, Jr.)
                          *                    Director                          April 19, 1994
              (Henry R. Kravis)
                          *                    Director                          April 19, 1994
           (Michael W. Michelson)
                          *                    Director                          April 19, 1994
             (Stanley P. Porter)
                          *                    Director                          April 19, 1994
             (George R. Roberts)
                          *                    Director                          April 19, 1994
             (Richard R. Shinn)
                          *                    Director                          April 19, 1994
              (Sellers Stough)
        *      /s/  LARRY D. KALMBACH                                            April 19, 1994
             (Larry D. Kalmbach)
              Attorney-in-Fact
</TABLE>
    
 
                                      II-4
<PAGE>   28
 
                                   SIGNATURES
 
   
     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-3 AND HAS DULY CAUSED THIS AMENDMENT TO ITS
REGISTRATION STATEMENT TO BE SIGNED ON ITS BEHALF BY THE UNDERSIGNED, THEREUNTO
DULY AUTHORIZED IN THE CITY OF HOUSTON, STATE OF TEXAS, ON APRIL 19, 1994.
    
 
                                        UNION TEXAS EAST KALIMANTAN LIMITED
 
                                        By:     /s/  LARRY D. KALMBACH
                                                     Larry D. Kalmbach
                                                      Vice President
 
   
     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.
    
 
   
<TABLE>
<CAPTION>
                  SIGNATURE                                TITLE                   DATE
- ---------------------------------------------  ------------------------------------------------
<S>                                            <C>                          <C>
                          *                    Director and President            April 19, 1994
          (Arthur W. Peabody, Jr.)               (Principal Executive
                                                 Officer)
               /s/  LARRY D. KALMBACH          Director and Vice President       April 19, 1994
             (Larry D. Kalmbach)                 (Principal Financial
                                                 Officer)
                          *                    Controller (Principal             April 19, 1994
              (Robert V. Deere)                  Accounting Officer)
                          *                    Director                          April 19, 1994
              (Johnnie J. Cox)
                          *                    Director                          April 19, 1994
              (James E. Knight)
                          *                    Director                          April 19, 1994
             (William M. Krips)
                          *                    Director                          April 19, 1994
           (Newton W. Wilson, III)
        *      /s/  LARRY D. KALMBACH                                            April 19, 1994
             (Larry D. Kalmbach)
              Attorney-in-Fact
</TABLE>
    
 
                                      II-5
<PAGE>   29
 
                                   SIGNATURES
 
   
     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-3 AND HAS DULY CAUSED THIS AMENDMENT TO ITS
REGISTRATION STATEMENT TO BE SIGNED ON ITS BEHALF BY THE UNDERSIGNED, THEREUNTO
DULY AUTHORIZED IN THE CITY OF HOUSTON, STATE OF TEXAS, ON APRIL 19, 1994.
    
 
                                        UNION TEXAS PETROLEUM ENERGY
                                          CORPORATION
 
                                        By:     /s/  LARRY D. KALMBACH
                                                     Larry D. Kalmbach
                                                      Vice President
 
   
     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.
    
 
   
<TABLE>
<CAPTION>
                  SIGNATURE                                TITLE                   DATE
- ---------------------------------------------  ------------------------------------------------
<S>                                            <C>                          <C>
                          *                    Director and President            April 19, 1994
          (Arthur W. Peabody, Jr.)               (Principal Executive
                                                 Officer)
               /s/  LARRY D. KALMBACH          Director and Vice President       April 19, 1994
             (Larry D. Kalmbach)                 (Principal Financial
                                                 Officer)
                          *                    Controller (Principal             April 19, 1994
              (Robert V. Deere)                  Accounting Officer)
                          *                    Director                          April 19, 1994
              (James E. Knight)
                          *                    Director                          April 19, 1994
             (William M. Krips)
        *      /s/  LARRY D. KALMBACH                                            April 19, 1994
             (Larry D. Kalmbach)
              Attorney-in-Fact
</TABLE>
    
 
                                      II-6
<PAGE>   30
 
                                   SIGNATURES
 
   
     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-3 AND HAS DULY CAUSED THIS AMENDMENT TO ITS
REGISTRATION STATEMENT TO BE SIGNED ON ITS BEHALF BY THE UNDERSIGNED, THEREUNTO
DULY AUTHORIZED IN THE CITY OF HOUSTON, STATE OF TEXAS, ON APRIL 19, 1994.
    
 
                                        UNION TEXAS INTERNATIONAL CORPORATION
 
                                        By:     /s/  LARRY D. KALMBACH
                                                     Larry D. Kalmbach
                                                      Vice President
 
   
     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.
    
 
   
<TABLE>
<CAPTION>
                  SIGNATURE                                TITLE                   DATE
- ---------------------------------------------  ------------------------------------------------
<S>                                            <C>                          <C>
                          *                    Director and President            April 19, 1994
             (William M. Krips)                  (Principal Executive
                                                 Officer)
               /s/  LARRY D. KALMBACH          Director and Vice President       April 19, 1994
             (Larry D. Kalmbach)                 (Principal Financial
                                                 Officer)
                         *                     Controller (Principal             April 19, 1994
              (Robert V. Deere)                  Accounting Officer)
                         *                     Director                          April 19, 1994
              (James E. Knight)
                         *                     Director                          April 19, 1994
          (Arthur W. Peabody, Jr.)
        *      /s/  LARRY D. KALMBACH                                            April 19, 1994
             (Larry D. Kalmbach)
              Attorney-in-Fact
</TABLE>
    
 
                                      II-7
<PAGE>   31
 
                                   SIGNATURES
 
   
     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-3 AND HAS DULY CAUSED THIS AMENDMENT TO ITS
REGISTRATION STATEMENT TO BE SIGNED ON ITS BEHALF BY THE UNDERSIGNED, THEREUNTO
DULY AUTHORIZED IN THE CITY OF HOUSTON, STATE OF TEXAS, ON APRIL 19, 1994.
    
 
                                        UNION TEXAS PRODUCTS CORPORATION
 
                                        By:     /s/  LARRY D. KALMBACH
                                                     Larry D. Kalmbach
                                                      Vice President
 
   
     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.
    
 
   
<TABLE>
<CAPTION>
                  SIGNATURE                                TITLE                   DATE
- ---------------------------------------------  ------------------------------------------------
<S>                                            <C>                          <C>
                          *                    Director and President            April 19, 1994
          (Arthur W. Peabody, Jr.)               (Principal Executive
                                                 Officer)
               /s/  LARRY D. KALMBACH          Director and Vice President       April 19, 1994
             (Larry D. Kalmbach)                 (Principal Financial
                                                 Officer)
                          *                    Controller (Principal             April 19, 1994
                (C. J. Smith)                    Accounting Officer)
                          *                    Director                          April 19, 1994
             (William M. Krips)
        *      /s/  LARRY D. KALMBACH                                            April 19, 1994
             (Larry D. Kalmbach)
              Attorney-in-Fact
</TABLE>
    
 
                                      II-8
<PAGE>   32
 
                                   SIGNATURES
 
   
     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-3 AND HAS DULY CAUSED THIS AMENDMENT TO ITS
REGISTRATION STATEMENT TO BE SIGNED ON ITS BEHALF BY THE UNDERSIGNED, THEREUNTO
DULY AUTHORIZED IN THE CITY OF HOUSTON, STATE OF TEXAS, ON APRIL 19, 1994.
    
 
                                        UNISTAR, INC.
 
                                        By:     /s/  LARRY D. KALMBACH
                                                     Larry D. Kalmbach
                                                      Vice President
 
   
     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.
    
 
   
<TABLE>
<CAPTION>
                  SIGNATURE                                TITLE                   DATE
- ---------------------------------------------  ------------------------------------------------
<S>                                            <C>                          <C>
                          *                    Director and President            April 19, 1994
          (Arthur W. Peabody, Jr.)               (Principal Executive
                                                 Officer)
               /s/  LARRY D. KALMBACH          Director and Vice President       April 19, 1994
             (Larry D. Kalmbach)                 (Principal Financial
                                                 Officer)
                          *                    Controller (Principal             April 19, 1994
              (Robert V. Deere)                  Accounting Officer)
                          *                    Director                          April 19, 1994
             (William M. Krips)
        *      /s/  LARRY D. KALMBACH                                            April 19, 1994
             (Larry D. Kalmbach)
              Attorney-in-Fact
</TABLE>
    
 
                                      II-9
<PAGE>   33
 
   
                               INDEX TO EXHIBITS
    
 
   
<TABLE>
<S>                  <C>
           *1.1      -- Form of Underwriting Agreement.
            3.1      -- Certificate of Incorporation of each Registrant (the Company's
                        Certificate of Incorporation is incorporated by reference from the
                        identical exhibit number in Post Effective Amendment No. 1 to the
                        Company's Registration Statement No. 33-12800; the Guarantors'
                        certificates of incorporation are incorporated by reference from the
                        identical exhibit number in the Company's Registration Statement No.
                        33-52400).
           *3.2      -- Bylaws, as amended, of Union Texas Petroleum Energy Corporation.
           *3.3      -- Bylaws, as amended, of Union Texas International Corporation.
           *3.4      -- Bylaws, as amended, of Union Texas Products Corporation.
            3.5      -- Bylaws of each other Registrant, as amended (the Company's Bylaws
                        were filed as Exhibit 3.1 to the Company's Form 8-K dated February 4,
                        1993 (Commission File No. 1-9019) and are incorporated herein by
                        reference, and the remaining Guarantors' Bylaws were filed as Exhibit
                        3.2 to the Company's Registration Statement No. 33-52400 and are
                        incorporated herein by reference).
           *4.1      -- Form of Indenture.
           *4.2      -- Form of Note (included in Exhibit 4.1).
           *5.1      -- Opinion of legal counsel regarding legality of securities being
                        registered.
           10.1      -- Credit Agreement, dated as of August 31, 1992, among the Company, the
                        Banks listed therein and NationsBank of Texas, N.A., as Agent, and
                        The First National Bank of Chicago and Union Bank of Switzerland,
                        Houston Agency, as Co-Agents (incorporated by reference from the
                        identical exhibit number in the Company's Registration Statement No.
                        33-52400).
           10.2      -- First Amendment to Credit Agreement, dated as of September 30, 1992,
                        among the Company, the Banks listed therein and NationsBank of Texas,
                        N.A., as Agent, and The First National Bank of Chicago and Union Bank
                        of Switzerland, Houston Agency, as Co-Agents (incorporated by
                        reference from the identical exhibit number in the Company's
                        Registration Statement No. 33-52400).
           10.3      -- The Indenture for the 8.25% Notes, dated as of November 15, 1992,
                        among the Company, the Guarantors and State Street Bank and Trust
                        Company (incorporated by reference from Exhibit 4.1 in Amendment No.
                        2 to the Company's Registration Statement No. 33-52400).
          *12.1      -- Computation of Ratio of Earnings to Fixed Charges.
         **12.2      -- Computation of Pro Forma Ratio of Earnings to Fixed Charges.
         **23.1      -- Consent of Price Waterhouse.
          *23.2      -- Consent of legal counsel (included in Exhibit 5.1).
          *24.1      -- Power of Attorney included in Part II of the Registration Statement.
          *25.1      -- Statement of Eligibility of Trustee on Form T-1.
</TABLE>
    
 
- ------------
 
 * Previously filed.
 
** Filed herewith.

<PAGE>   1
 
                                                                    EXHIBIT 12.2
 
                  PRO FORMA RATIO OF EARNINGS TO FIXED CHARGES
                          YEAR ENDED DECEMBER 31, 1993
                             (DOLLARS IN THOUSANDS)
 
   
<TABLE>
<CAPTION>
                                                                                          PRO
                                                           HISTORICAL    ADJUSTMENTS(1)  FORMA
                                                           --------      ---------      --------
<S>                                                        <C>           <C>            <C>
Net pretax income(2).....................................  $ 26,983      $  (9,007)     $ 17,976
Fixed Charges
  Interest expense.......................................    30,506          9,007        39,513
  Preferred stock dividends of a subsidiary..............     1,681                        1,681
  Capitalized debt cost..................................     1,536                        1,536
  Interest portion of rent expenses......................     2,777                        2,777
                                                           --------      ---------      --------
          Total fixed charges............................    36,500          9,007        45,507
  Less: Capitalized interest, net........................     4,623                        4,623
                                                           --------      ---------      --------
                                                             31,877          9,007        40,884
Earnings before fixed charges............................  $ 58,860                     $ 58,860
                                                           --------      ---------      --------
                                                           --------      ---------      --------
Ratio of earnings to fixed charges.......................      1.61                         1.29
</TABLE>
    
 
- ------------
 
   
(1) The pro forma adjustments give effect to increased interest expense, as if
    such transaction had taken place January 1, 1993 as a result of the issuance
    of $200 million of the Notes at a pro forma annual interest rate of 8.6% and
    the application of proceeds to the reduction of debt under the revolving
    credit facility and the uncommitted and unsecured lines of credit.
    
 
   
(2) During 1993, the Company recorded a non-cash charge to depreciation,
    depletion and amortization of $103 million pretax ($48 million after-tax)
    for the write-down of its investment in the U. K. North Sea's Piper field.
    Excluding the effect of the Piper write-down, the historical ratio of
    earnings to fixed charges for 1993 would have been 4.45. Excluding the
    effect of the Piper write-down, this pro forma ratio would have been 3.57.
    

<PAGE>   1
 
                                                                    EXHIBIT 23.1
 
                       CONSENT OF INDEPENDENT ACCOUNTANTS
 
   
     We hereby consent to the incorporation by reference in the Prospectus
constituting part of this Registration Statement on Form S-3 of our report dated
January 26, 1994 appearing on page 29 of Union Texas Petroleum Holdings, Inc.'s
Annual Report on Form 10-K for the year ended December 31, 1993. We also consent
to the references to us under the headings "Experts" and "Selected Consolidated
Financial Data" in such Prospectus. However, it should be noted that Price
Waterhouse has not prepared or certified such "Selected Consolidated Financial
Data."
    
 
PRICE WATERHOUSE
 
Houston, Texas
April 19, 1994


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