<DOCUMENT>
<TYPE>EX-21.1
<SEQUENCE>3
<FILENAME>h13119exv21w1.txt
<DESCRIPTION>SUBSIDIARIES OF THE COMPANY
<TEXT>
<PAGE>
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                                                                               .
                                                                               .
                                                                    EXHIBIT 21.1

                  SUBSIDIARIES OF MISSION RESOURCES CORPORATION
                                 AS OF 12/31/03


<Table>
<Caption>
                                            State of Incorporation of
                                                   Organization
                                            -------------------------
<S>                                         <C>
Black Hawk Oil Company                                Delaware
Mission E&P Limited Partnership                        Texas
Mission Holdings LLC                                  Delaware
Pan American Energy Finance Corp                      Delaware
</Table>

</TEXT>
</DOCUMENT>