Fifth Amendment to Amended and Restated Certificate of Limited Partnership of Geodyne Energy Income Limited Partnership II-H

                                  EXHIBIT 4.100

                               Fifth Amendment to
                              Amended and Restated
                      Certificate of Limited Partnership of
                 Geodyne Energy Income Limited Partnership II-H


     The undersigned,   desiring to amend its amended and restated   certificate
of limited   partnership   pursuant   to the   Oklahoma   Revised   Uniform   Limited
Partnership Act, as amended,   Okla.   Stat. tit. 54 (1993),   Section 301 et seq
(the "Act"), do hereby state:

1.   The   name of the   limited   partnership   is   Geodyne   Energy   Income   Limited
Partnership II-H.

2. The   dates of   filing   of the   Certificate   of   Limited   Partnership   and all
amendments thereto are as follows:

Name                                                                 Date
Agreement and Certificate of Limited Partnership                    5/19/89
Amended and Restated Certificate of Limited
      Partnership                                                   3/10/89
First Amendment to Amended and Restated Certificate
      of Limited Partnership                                        2/25/93
Second Amendment to Amended and Restated Certificate
      of Limite