AGREEMENT The undersigned reporting persons hereby agree that the statements filed pursuant to this Schedule 13D/A, to which this Agreement is filed as an exhibit, are filed on behalf of each of them. Date: May 21, 1999 ENERGY CAPITAL INVESTMENT...

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                                    EXHIBIT 1

                                    AGREEMENT

          The undersigned reporting persons hereby agree that the statements
     filed pursuant to this Schedule 13D/A, to which this Agreement is filed as
     an exhibit, are filed on behalf of each of them.



 Date: May 21, 1999                      ENERGY CAPITAL INVESTMENT COMPANY PLC



                                         By:   /s/ Xxxx X. Xxxxxxxx
                                            ------------------------------
                                               Xxxx X. Xxxxxxxx
                                               Director



 Date: May 21, 1999                      ENCAP EQUITY 1994 LIMITED PARTNERSHIP

                                         By:   EnCap Investments L.L.C., General
                                               Partner


                                         By:   /s/ D. Xxxxxx Xxxxxxxx
                                            ------------------------------
                                               D. Xxxxxx Xxxxxxxx
                                               Managing Director



 Date: May 21, 1999                      ENCAP INVESTMENTS L.L.C.



                                         By:   /s/ D. Xxxxxx Xxxxxxxx
                                            ------------------------------
                                               D. Xxxxxx Xxxxxxxx
                                               Managing Director