.
                                                                               .
                                                                               .

                                                                    Exhibit 21.1

                  SUBSIDIARIES OF MISSION RESOURCES CORPORATION
                                 AS OF 12/31/04



                                        State of Incorporation of
                                               Organization
                                        -------------------------
                                     
Black Hawk Oil Company                          Delaware
Mission E&P Limited Partnership                  Texas
Mission Holdings LLC                            Delaware