PARTIES TO THIS AGREEMENT AND THEIR PERCENTAGES:

Exhibit A of Exhibit 10.23, Dyad Australia Prospect Agreement


                                   EXHIBIT "A"

        To the Letter Agreement between Dyad-Australia, Inc. and Beta Oil &
Gas, Inc, et al dated January 25, 1999.

        LANDS SUBJECT TO THIS AGREEMENT:

                           Authority to Prospect ATP 554P
                         Block Identification Map - Series B
                                       Conclurry
                            State of Queensland, Australia
                                      Blocks (25)

                                       3101-3106
                                       3173-3178
                                       3245-3250
                                       3319-3322
                                       3392-3394

        PARTIES TO THIS AGREEMENT AND THEIR PERCENTAGES:




                                         % INTEREST IN THIS      % INTEREST - ASSUMING
                                             AGREEMENT          ELECTION TO PARTICIPATE
                                                                        AT STAGE 1
---------------------------------------------------------------------------------------
                                                          
       Beta Oil & Gas, Inc.                     20%                         10%
       000 Xxxx Xxxxxx, Xxxxx 000
       Xxxxxxx Xxxxx, Xx. 922660

       Penasco Investment Company               15%                        7.5%
       0000 Xxxxxxxxx
       Xxxxxx, Xxxxx 00000
       Attn: Xxxx X. Xxxxx

       Xxxxxx Queensland II, Ltd.            9.208%                      4.604%
       0000 Xxxxxxxx, Xxxxx 000
       Xxxxxxx, Xxxxx 00000

       Golden Triangle Industries            4.875%                     2.4275%
       X.X. Xxx 00000
       Xxxxxxxxxxx, Xxx Xxxxxx 00000-0000

       Xxx Xxxxx                             4.875%                     2.4375%
       000 X. Xxxx, Xxx. 000
       Xxxxxxx, Xxxxx 00000

       Dyad - Australia, Inc.               46.042%                     23.021%
       000 X. Xxxx, Xxx. 0000
       Xxxxxxx, Xxxxx 00000

                                          -------------------------------------
                             TOTAL             100%                       50.0%