| 390178 | Jul 25, 1991 | Jul 25, 1991 | Transamerican Natural Gas Corp. | Webb | Hereford #37 | 8,300 | 47935281 |
| 389972 | Jul 19, 1991 | Jul 19, 1991 | Transamerican Natural Gas Corp. | Webb | Schwarz #15 | 10,500 | 47935277 |
| 389921 | Jul 15, 1991 | Jul 15, 1991 | Transamerican Natural Gas Corp. | Zapata | La Perla #150 | 10,400 | 50532808 |
| 389847 | Jul 12, 1991 | Jul 12, 1991 | Transamerican Natural Gas Corp. | Webb | Rottersman #15 | 10,800 | 47935273 |
| 389846 | Jul 12, 1991 | Jul 12, 1991 | Transamerican Natural Gas Corp. | Zapata | McMurrey, Wm. #47 | 10,500 | 50532806 |
| 389438 | Jul 1, 1991 | Jul 1, 1991 | Transamerican Natural Gas Corp. | Webb | Carr #55 | 9,700 | 47935263 |
| 389189 | Jun 28, 1991 | Jun 28, 1991 | Transamerican Natural Gas Corp. | Webb | Frost National Bank #42 | 8,500 | 47935260 |
| 389188 | Jun 28, 1991 | Jun 28, 1991 | Transamerican Natural Gas Corp. | Zapata | La Perla #149 | 10,400 | 50532804 |
| 389169 | Jun 21, 1991 | Jun 21, 1991 | Transamerican Natural Gas Corp. | Zapata | Herbst #12 | 9,200 | 50532802 |
| 388913 | Jun 12, 1991 | Jun 12, 1991 | Transamerican Natural Gas Corp. | Zapata | Yzaguirre-Leo G.U. #5 | 11,700 | 50532801 |
| 388483 | Jun 5, 1991 | Jun 5, 1991 | Transamerican Natural Gas Corp. | Zapata | La Perla #147 | 10,500 | 50532797 |
| 388482 | Jun 5, 1991 | Jun 5, 1991 | Transamerican Natural Gas Corp. | Zapata | La Perla #148 | 10,100 | 50532796 |
| 388209 | May 22, 1991 | May 22, 1991 | Transamerican Natural Gas Corp. | Webb | Carr "B" #1 | 9,400 | 47935241 |
| 388173 | May 21, 1991 | May 21, 1991 | Transamerican Natural Gas Corp. | Zapata | La Perla #146 | 10,400 | 50532794 |
| 387911 | May 15, 1991 | May 15, 1991 | Transamerican Natural Gas Corp. | Webb | B.M.T. #31 | 11,000 | 47935233 |
| 387908 | May 15, 1991 | May 15, 1991 | Transamerican Natural Gas Corp. | Webb | Martinez, D. #8 | 8,700 | 47935234 |
| 387636 | May 9, 1991 | May 9, 1991 | Transamerican Natural Gas Corp. | Zapata | Uribe #4 | 9,800 | 50532791 |
| 387249 | May 1, 1991 | May 1, 1991 | Transamerican Natural Gas Corp. | Zapata | La Perla #145 | 10,000 | 50532789 |
| 387250 | Apr 30, 1991 | Apr 30, 1991 | Transamerican Natural Gas Corp. | Webb | Bruni Ranch #25 | 9,700 | 47935223 |
| 387121 | Apr 25, 1991 | Apr 25, 1991 | Transamerican Natural Gas Corp. | Zapata | J.O.D. #5 | 11,700 | 50532788 |
| 386893 | Apr 18, 1991 | Apr 18, 1991 | Transamerican Natural Gas Corp. | Webb | Frost National Bank #41 | 8,500 | 47935217 |
| 386660 | Apr 12, 1991 | Apr 12, 1991 | Transamerican Natural Gas Corp. | Zapata | La Perla #143 | 10,300 | 50532782 |
| 386659 | Apr 12, 1991 | Apr 12, 1991 | Transamerican Natural Gas Corp. | Zapata | La Perla #144 | 10,300 | 50532783 |
| 385890 | Mar 19, 1991 | Mar 19, 1991 | Transamerican Natural Gas Corp. | Zapata | La Perla #142 | 10,300 | 50532775 |
| 385867 | Mar 18, 1991 | Mar 18, 1991 | Transamerican Natural Gas Corp. | Zapata | Benavides, B. R. "A" #2 | 13,000 | 50532774 |
| 385658 | Mar 18, 1991 | Mar 18, 1991 | Transamerican Natural Gas Corp. | Webb | Marrs-McLean #2 | 12,300 | 47935198 |
| 385659 | Mar 15, 1991 | Mar 15, 1991 | Transamerican Natural Gas Corp. | Zapata | La Perla #141 | 10,300 | 50532770 |
| 385346 | Mar 6, 1991 | Mar 6, 1991 | Transamerican Natural Gas Corp. | Zapata | Haynes #12 | 14,300 | 50532769 |
| 385149 | Feb 27, 1991 | Feb 27, 1991 | Transamerican Natural Gas Corp. | Webb | Lundell #50 | 10,200 | 47935186 |
| 384927 | Feb 21, 1991 | Feb 21, 1991 | Transamerican Natural Gas Corp. | Zapata | La Perla #140 | 10,100 | 50532767 |
| 384905 | Feb 20, 1991 | Feb 20, 1991 | Transamerican Natural Gas Corp. | Webb | Carr #52 | 10,400 | 47935181 |
| 384904 | Feb 20, 1991 | Feb 20, 1991 | Transamerican Natural Gas Corp. | Zapata | La Perla #139 | 10,300 | 50532766 |
| 384584 | Feb 12, 1991 | Feb 12, 1991 | Transamerican Natural Gas Corp. | Webb | Hirsh "A" #2 | 8,300 | 47935178 |
| 384584Amendment | Feb 12, 1991 | Feb 12, 1991 | Transamerican Natural Gas Corp. | Webb | Hirsh "A" #2 | 8,300 | 47935178 |
| 384150 | Feb 4, 1991 | Feb 4, 1991 | Transamerican Natural Gas Corp. | Zapata | La Perla #138 | 10,300 | 50532759 |
| 384096 | Feb 1, 1991 | Feb 1, 1991 | Transamerican Natural Gas Corp. | Zapata | L.F.T. #4 | 11,500 | 50532758 |
| 383983 | Jan 30, 1991 | Jan 30, 1991 | Transamerican Natural Gas Corp. | Webb | Martinez, D. et Al #7 | 8,500 | 47935163 |
| 383979 | Jan 29, 1991 | Jan 29, 1991 | Transamerican Natural Gas Corp. | Zapata | La Perla #118 | 10,500 | 50532755 |
| 383517 | Jan 16, 1991 | Jan 16, 1991 | Transamerican Natural Gas Corp. | Webb | Hereford #36 | 8,300 | 47935150 |
| 383515 | Jan 16, 1991 | Jan 16, 1991 | Transamerican Natural Gas Corp. | Webb | Frost National Bank #40 | 11,200 | 47935151 |
| 383512 | Jan 16, 1991 | Jan 16, 1991 | Transamerican Natural Gas Corp. | Webb | Lechenger #13 | 9,000 | 47935152 |
| 383243 | Jan 11, 1991 | Jan 11, 1991 | Transamerican Natural Gas Corp. | Zapata | Gutierrez, O. #2 | 10,500 | 50531786 |
| 383017 | Jan 3, 1991 | Jan 3, 1991 | Transamerican Natural Gas Corp. | Webb | Villarreal "F" #3 | 12,300 | 47935146 |
| 383016 | Jan 3, 1991 | Jan 3, 1991 | Transamerican Natural Gas Corp. | Zapata | La Perla #137 | 10,000 | 50532748 |
| 382756 | Dec 28, 1990 | Dec 28, 1990 | Transamerican Natural Gas Corp. | Zapata | La Perla #136 | 10,500 | 50532745 |
| 382516 | Dec 19, 1990 | Dec 19, 1990 | Transamerican Natural Gas Corp. | Webb | Schwarz #11 | 10,700 | 47935136 |
| 382400 | Dec 14, 1990 | Dec 14, 1990 | Transamerican Natural Gas Corp. | Webb | Frost, P. M. "F" #1 | 11,600 | 47935134 |
| 382286 | Dec 13, 1990 | Dec 13, 1990 | Transamerican Natural Gas Corp. | Zapata | La Perla #125 | 10,500 | 50532635 |
| 382125 | Dec 10, 1990 | Dec 10, 1990 | Transamerican Natural Gas Corp. | Webb | Rottersman #6 | 11,000 | 47935131 |
| 381372 | Nov 21, 1990 | Nov 21, 1990 | Transamerican Natural Gas Corp. | Zapata | Uribe #3 | 9,800 | 50532737 |
| 381421 | Nov 20, 1990 | Nov 20, 1990 | Transamerican Natural Gas Corp. | Zapata | Guerra "L" #12 | 10,000 | 50532740 |
| 380962 | Nov 13, 1990 | Nov 13, 1990 | Transamerican Natural Gas Corp. | Zapata | La Perla #135 | 10,000 | 50532734 |
| 380961 | Nov 13, 1990 | Nov 13, 1990 | Transamerican Natural Gas Corp. | Zapata | Bernardo G. U. #6 | 11,700 | 50532735 |
| 380407 | Nov 7, 1990 | Nov 7, 1990 | Transamerican Natural Gas Corp. | Webb | Lundell "C" #2 | 10,200 | 47935121 |
| 380243 | Nov 5, 1990 | Nov 5, 1990 | Transamerican Natural Gas Corp. | Webb | B.M.T. #30 | 11,000 | 47935120 |
| 380551 | Nov 2, 1990 | Nov 2, 1990 | Transamerican Natural Gas Corp. | Zapata | La Perla #113 | 10,400 | 50532731 |
| 379699 | Oct 17, 1990 | Oct 17, 1990 | Transamerican Natural Gas Corp. | Zapata | Garza, L. "B" #4 | 11,700 | 50532729 |
| 379699Amendment | Oct 17, 1990 | Oct 17, 1990 | Transamerican Natural Gas Corp. | Zapata | Garza, L. "B" #4 | 14,200 | 50532729 |
| 379224 | Oct 17, 1990 | Oct 17, 1990 | Transamerican Natural Gas Corp. | Zapata | La Perla #120 | 10,500 | 50532726 |
| 379077 | Oct 17, 1990 | Oct 17, 1990 | Transamerican Natural Gas Corp. | Zapata | La Perla #112 | 10,500 | 50532727 |
| 378871 | Oct 9, 1990 | Oct 9, 1990 | Transamerican Natural Gas Corp. | Zapata | La Perla #111 | 10,000 | 50532723 |
| 378686 | Sep 28, 1990 | Sep 28, 1990 | Transamerican Natural Gas Corp. | Webb | Lundell #57 | 10,200 | 47935101 |
| 378572 | Sep 27, 1990 | Sep 27, 1990 | Transamerican Natural Gas Corp. | Webb | Bruni Ranch #24 | 10,200 | 47935103 |
| 377821 | Sep 14, 1990 | Sep 14, 1990 | Transamerican Natural Gas Corp. | Webb | G. & F. Ramirez G.U. #2 | 9,500 | 47935092 |
| 377821Amendment | Sep 14, 1990 | Sep 14, 1990 | Transamerican Natural Gas Corp. | Webb | G. & F. Ramirez G.U. #2 | 9,500 | 47935092 |
| 377669 | Sep 10, 1990 | Sep 10, 1990 | Transamerican Natural Gas Corp. | Webb | Frost National Bank #39 | 8,500 | 47935088 |
| 377257 | Aug 29, 1990 | Aug 29, 1990 | Transamerican Natural Gas Corp. | Zapata | Fernando #2 | 11,000 | 50532717 |
| 377032 | Aug 29, 1990 | Aug 29, 1990 | Transamerican Natural Gas Corp. | Zapata | Haynes #11 | 14,500 | 50532716 |
| 377031 | Aug 29, 1990 | Aug 29, 1990 | Transamerican Natural Gas Corp. | Zapata | L.F.T. #3 | 11,500 | 50532715 |
| 376864 | Aug 23, 1990 | Aug 23, 1990 | Transamerican Natural Gas Corp. | Webb | Hereford #35 | 8,300 | 47935079 |
| 376959 | Aug 22, 1990 | Aug 22, 1990 | Transamerican Natural Gas Corp. | Zapata | J.O.D. #4 | 11,700 | 50532714 |
| 376512 | Aug 15, 1990 | Aug 15, 1990 | Transamerican Natural Gas Corp. | Zapata | Bernardo G.U. #5R | 11,700 | 50532711 |
| 376125 | Aug 2, 1990 | Aug 2, 1990 | Transamerican Natural Gas Corp. | Zapata | La Perla #134 | 10,500 | 50532709 |
| 376005 | Jul 27, 1990 | Jul 27, 1990 | Transamerican Natural Gas Corp. | Zapata | La Perla #116 | 10,300 | 50532707 |
| 375507 | Jul 16, 1990 | Jul 16, 1990 | Transamerican Natural Gas Corp. | Zapata | La Perla #110 | 10,500 | 50532702 |
| 375506 | Jul 13, 1990 | Jul 13, 1990 | Transamerican Natural Gas Corp. | Webb | Hereford #34 | 8,200 | 47935065 |
| 375365 | Jul 10, 1990 | Jul 10, 1990 | Transamerican Natural Gas Corp. | Webb | Lundell #56 | 10,200 | 47935064 |
| 375110 | Jul 5, 1990 | Jul 5, 1990 | Transamerican Natural Gas Corp. | Zapata | Flores, L. G. #10 | 11,500 | 50532701 |
| 375047 | Jun 29, 1990 | Jun 29, 1990 | Transamerican Natural Gas Corp. | Webb | Leyendecker #2 | 8,000 | 47935062 |
| 375047Amendment | Jun 29, 1990 | Jun 29, 1990 | Transamerican Natural Gas Corp. | Webb | Leyendecker #2 | 8,500 | 47935062 |
| 374953 | Jun 27, 1990 | Jun 27, 1990 | Transamerican Natural Gas Corp. | Zapata | La Perla #115 | 10,300 | 50532699 |
| 374803 | Jun 22, 1990 | Jun 22, 1990 | Transamerican Natural Gas Corp. | Zapata | La Perla #133 | 10,500 | 50532696 |
| 374436 | Jun 14, 1990 | Jun 14, 1990 | Transamerican Natural Gas Corp. | Webb | Lechenger #12 | 9,800 | 47935054 |
| 374389 | Jun 14, 1990 | Jun 14, 1990 | Transamerican Natural Gas Corp. | Zapata | La Perla #132 | 10,500 | 50532690 |
| 374389Amendment | Jun 14, 1990 | Jun 14, 1990 | Transamerican Natural Gas Corp. | Zapata | La Perla #132 | 10,500 | 50532690 |
| 374241 | Jun 12, 1990 | Jun 12, 1990 | Transamerican Natural Gas Corp. | Webb | Schwarz #14 | 8,300 | 47935046 |
| 374196 | Jun 7, 1990 | Jun 7, 1990 | Transamerican Natural Gas Corp. | Webb | Villareal "F" #2 | 12,300 | 47935043 |
| 374090 | Jun 5, 1990 | Jun 5, 1990 | Transamerican Natural Gas Corp. | Zapata | Bernardo G.U. #5 | 11,700 | 50532687 |
| 373541 | May 18, 1990 | May 18, 1990 | Transamerican Natural Gas Corp. | Webb | Frost National Bank #38 | 8,500 | 47935037 |
| 373153 | May 14, 1990 | May 14, 1990 | Transamerican Natural Gas Corp. | Webb | B.M.T. #29 | 11,200 | 47935036 |
| 373043 | May 7, 1990 | May 7, 1990 | Transamerican Natural Gas Corp. | Zapata | J.O.D. #3 | 11,700 | 50532676 |
| 373020 | May 7, 1990 | May 7, 1990 | Transamerican Natural Gas Corp. | Webb | Bruni Ranch #23 | 9,400 | 47935033 |
| 372842 | May 3, 1990 | May 3, 1990 | Transamerican Natural Gas Corp. | Zapata | Uribe #2 | 9,800 | 50532675 |
| 372114 | Apr 16, 1990 | Apr 16, 1990 | Transamerican Natural Gas Corp. | Zapata | La Perla #131 | 10,500 | 50532672 |
| 372022 | Apr 12, 1990 | Apr 12, 1990 | Transamerican Natural Gas Corp. | Webb | Carr #51 | 9,600 | 47935023 |
| 371914 | Apr 10, 1990 | Apr 10, 1990 | Transamerican Natural Gas Corp. | Zapata | La Perla #130 | 10,500 | 50532670 |
| 371913 | Apr 10, 1990 | Apr 10, 1990 | Transamerican Natural Gas Corp. | Zapata | Garza, L. "B" #3 | 11,600 | 50532669 |
| 371495 | Mar 27, 1990 | Mar 27, 1990 | Transamerican Natural Gas Corp. | Zapata | Asche #21 | 11,500 | 50532662 |
| 370886 | Mar 13, 1990 | Mar 13, 1990 | Transamerican Natural Gas Corp. | Webb | Lundell #63 | 10,500 | 47935013 |
| 370565 | Mar 6, 1990 | Mar 6, 1990 | Transamerican Natural Gas Corp. | Zapata | Haynes #10 | 14,500 | 50532651 |