| 548556 | Jul 21, 2004 | Jul 21, 2004 | Union Gas Operating Company | Victoria | Dreyer, William #4 | 11,000 | 46933856 |
| 544433 | Apr 14, 2004 | Apr 14, 2004 | Union Gas Operating Company | Victoria | Watts-Gisler #2 | 11,500 | 46933827 |
| 544009 | Apr 2, 2004 | Apr 2, 2004 | Union Gas Operating Company | Hardin | Nelson, B.P. A-40 #1 | 15,000 | 19932909 |
| 541962 | Feb 11, 2004 | Feb 11, 2004 | Union Gas Operating Company | Victoria | Watts-Gisler #3 | 11,500 | 46933809 |
| 537535 | Oct 14, 2003 | Oct 14, 2003 | Union Gas Operating Company | Goliad | Bammert #3 | 12,000 | 17533585 |
| 536997 | Sep 30, 2003 | Sep 30, 2003 | Union Gas Operating Company | Goliad | Kickendahl #1R | 13,000 | 17533581 |
| 536940 | Sep 29, 2003 | Sep 29, 2003 | Union Gas Operating Company | Goliad | Windberg, Dalhart #3 | 14,000 | 17533580 |
| 536939 | Sep 29, 2003 | Sep 29, 2003 | Union Gas Operating Company | Goliad | Georgia Hoff, et Al #5 | 12,000 | 17533579 |
| 536296 | Sep 10, 2003 | Sep 10, 2003 | Union Gas Operating Company | Goliad | Hausmann, et. Al. #B 1 | 3,000 | 17533569 |
| 536249 | Sep 9, 2003 | Sep 9, 2003 | Union Gas Operating Company | Goliad | Hausman #2 | 12,000 | 17533568 |
| 536128 | Sep 5, 2003 | Sep 5, 2003 | Union Gas Operating Company | Goliad | Homer #1 | 14,000 | 17533565 |
| 536128Amendment | Sep 5, 2003 | Sep 5, 2003 | Union Gas Operating Company | Goliad | Homer #1 | 14,000 | 17533565 |
| 535300 | Aug 13, 2003 | Aug 13, 2003 | Union Gas Operating Company | Goliad | Hausmann, et. Al. #1 | 13,500 | 17533559 |
| 535193 | Aug 11, 2003 | Aug 11, 2003 | Union Gas Operating Company | Goliad | Georgia Hoff, et. Al. #2 | 12,000 | 17533557 |
| 535192 | Aug 11, 2003 | Aug 11, 2003 | Union Gas Operating Company | Goliad | Kickendahl #1 | 13,000 | 17533558 |
| 534143 | Jul 14, 2003 | Jul 14, 2003 | Union Gas Operating Company | Goliad | Windberg, Dalhart #2 | 12,000 | 17533549 |
| 531930 | May 14, 2003 | May 14, 2003 | Union Gas Operating Company | Goliad | Cunningham #1 | 12,000 | 17533519 |
| 530776 | Apr 15, 2003 | Apr 15, 2003 | Union Gas Operating Company | Goliad | Windberg, Dalhart #1 | 13,000 | 17533512 |
| 530776Amendment | Apr 15, 2003 | Apr 15, 2003 | Union Gas Operating Company | Goliad | Windberg, Dalhart #1 | 14,000 | 17533512 |
| 530776Amendment | Apr 15, 2003 | Apr 15, 2003 | Union Gas Operating Company | Goliad | Windberg, Dalhart #1 | 14,000 | 17533512 |
| 530058 | Mar 27, 2003 | Mar 27, 2003 | Union Gas Operating Company | Goliad | Lange #1 | 12,500 | 17533505 |
| 529100 | Mar 3, 2003 | Mar 3, 2003 | Union Gas Operating Company | Goliad | Neese #1 | 14,000 | 17533494 |
| 529100Amendment | Mar 3, 2003 | Mar 3, 2003 | Union Gas Operating Company | Goliad | Neese #1 | 14,000 | 17533494 |
| 528885 | Feb 26, 2003 | Feb 26, 2003 | Union Gas Operating Company | Hardin | BP-Fee #2 | 8,000 | 19932877 |
| 527698 | Jan 24, 2003 | Jan 24, 2003 | Union Gas Operating Company | Goliad | Edward H. Seifert, et UX #2 | 12,500 | 17533487 |
| 526521 | Dec 18, 2002 | Dec 18, 2002 | Union Gas Operating Company | Goliad | Hoff, Georgia et Al #1 | 12,490 | 17533484 |
| 526520 | Dec 18, 2002 | Dec 18, 2002 | Union Gas Operating Company | Hardin | BP-Fee #1 | 14,000 | 19932872 |
| 526114 | Dec 5, 2002 | Dec 5, 2002 | Union Gas Operating Company | Goliad | Scheffler, Donald et Al #1 | 13,000 | 17533481 |
| 525567 | Nov 15, 2002 | Nov 15, 2002 | Union Gas Operating Company | Goliad | Brandt, Stephen K. #1 | 6,000 | 17533479 |
| 525490 | Nov 14, 2002 | Nov 14, 2002 | Union Gas Operating Company | Goliad | Republic Royalty Co. #1 | 6,000 | 17533477 |
| 524093 | Sep 26, 2002 | Sep 26, 2002 | Union Gas Operating Company | Victoria | Jacob, Darden #1 | 14,000 | 46933663 |
| 524092 | Sep 26, 2002 | Sep 26, 2002 | Union Gas Operating Company | Goliad | Ramsey #B 1 | 14,000 | 17533461 |
| 523395 | Sep 5, 2002 | Sep 5, 2002 | Union Gas Operating Company | Goliad | Seifert, Edward H. et UX #1 | 14,500 | 17533456 |
| 521475 | Jun 28, 2002 | Jun 28, 2002 | Union Gas Operating Company | Goliad | Whitfield #1 | 11,500 | 17533440 |
| 520968 | Jun 13, 2002 | Jun 13, 2002 | Union Gas Operating Company | Goliad | Robinson #2 | 9,500 | 17533435 |
| 520131 | May 17, 2002 | May 17, 2002 | Union Gas Operating Company | Goliad | Marshall, F. O. #1 | 3,200 | 17533432 |
| 520026 | May 15, 2002 | May 15, 2002 | Union Gas Operating Company | Goliad | Minton #1 | 11,000 | 17533431 |
| 519089 | Apr 12, 2002 | Apr 12, 2002 | Union Gas Operating Company | Goliad | Hilary #1 | 12,000 | 17533427 |
| 519089Amendment | Apr 12, 2002 | Apr 12, 2002 | Union Gas Operating Company | Goliad | Hilary #1 | 12,000 | 17533427 |
| 518594 | Mar 26, 2002 | Mar 26, 2002 | Union Gas Operating Company | Goliad | Melinda Location #1 | 10,800 | 17533424 |
| 518190 | Mar 8, 2002 | Mar 8, 2002 | Union Gas Operating Company | Goliad | Ramsey #1 | 11,500 | 17533420 |
| 518190Amendment | Mar 8, 2002 | Mar 8, 2002 | Union Gas Operating Company | Goliad | Ramsey #1 | 11,500 | 17533420 |
| 516908 | Jan 17, 2002 | Jan 17, 2002 | Union Gas Operating Company | Goliad | Loehr-Parr #1 | 12,450 | 17533412 |
| 516211 | Dec 17, 2001 | Dec 17, 2001 | Union Gas Operating Company | Goliad | Roudon #1 | 14,000 | 17533409 |
| 514380 | Oct 11, 2001 | Oct 11, 2001 | Union Gas Operating Company | Goliad | Duderstadt, Darwyn Et.al. #1 | 12,000 | 17533396 |
| 514380Amendment | Oct 11, 2001 | Oct 11, 2001 | Union Gas Operating Company | Goliad | Duderstadt, Darwyn Et.al. #1 | 12,000 | 17533396 |
| 514380Amendment | Oct 11, 2001 | Oct 11, 2001 | Union Gas Operating Company | Goliad | Duderstadt, Darwyn Et.al. #1 | 12,000 | 17533396 |
| 512912 | Aug 23, 2001 | Aug 23, 2001 | Union Gas Operating Company | Goliad | Hoffman Ranch #1 | 14,000 | 17533380 |
| 512912Amendment | Aug 23, 2001 | Aug 23, 2001 | Union Gas Operating Company | Goliad | Hoffman Ranch #1 | 14,000 | 17533380 |
| 511494 | Jul 16, 2001 | Jul 16, 2001 | Union Gas Operating Company | Goliad | Reaves-Dye "A" #2 | 5,500 | 17533370 |
| 511243 | Jul 10, 2001 | Jul 10, 2001 | Union Gas Operating Company | Goliad | Stewart #1 | 3,500 | 17533368 |
| 511242 | Jul 10, 2001 | Jul 10, 2001 | Union Gas Operating Company | Goliad | Stewart #2 | 3,500 | 17533367 |
| 510987 | Jul 2, 2001 | Jul 2, 2001 | Union Gas Operating Company | Goliad | Danforth #1 | 14,000 | 17533366 |
| 510987Amendment | Jul 2, 2001 | Jul 2, 2001 | Union Gas Operating Company | Goliad | Danforth #1 | 14,000 | 17533366 |
| 510936 | Jun 29, 2001 | Jun 29, 2001 | Union Gas Operating Company | Goliad | Reaves-Dye #1 | 3,500 | 17533365 |
| 510935 | Jun 29, 2001 | Jun 29, 2001 | Union Gas Operating Company | Goliad | Dohmann, Arthur A. et UX #1 | 3,500 | 17533364 |
| 510527 | Jun 20, 2001 | Jun 20, 2001 | Union Gas Operating Company | Goliad | Hartman "A" #1 | 3,500 | 17533362 |
| 510446 | Jun 18, 2001 | Jun 18, 2001 | Union Gas Operating Company | Goliad | Gohlke, Aldo W. et UX #1 | 3,500 | 17533361 |
| 510006 | Jun 8, 2001 | Jun 8, 2001 | Union Gas Operating Company | Goliad | Albrecht "A" #1 | 3,500 | 17533358 |
| 510005 | Jun 8, 2001 | Jun 8, 2001 | Union Gas Operating Company | Jackson | Miller - Rhoades #1 | 17,000 | 23933138 |
| 509121 | May 17, 2001 | May 17, 2001 | Union Gas Operating Company | Goliad | Reed, Addie Bell et Al #1 | 12,000 | 17533351 |
| 509121Amendment | May 17, 2001 | May 17, 2001 | Union Gas Operating Company | Goliad | Reed, Addie Bell et Al #1 | 13,000 | 17533351 |
| 509121Amendment | May 17, 2001 | May 17, 2001 | Union Gas Operating Company | Goliad | Reed, Addie Bell et Al #1 | 15,500 | 17533351 |
| 507696 | Apr 11, 2001 | Apr 11, 2001 | Union Gas Operating Company | Goliad | Robinson #1 | 12,500 | 17533340 |
| 502491 | Nov 30, 2000 | Nov 30, 2000 | Union Gas Operating Company | Victoria | Lonestar #2 | 12,000 | 46933543 |
| 501367 | Oct 30, 2000 | Oct 30, 2000 | Union Gas Operating Company | Victoria | Lassman, Charles A. Etux #1 | 15,000 | 46933539 |
| 500655 | Oct 11, 2000 | Oct 11, 2000 | Union Gas Operating Company | Victoria | Cooley, M. E. #1 | 10,849 | 46933363 |
| 500253 | Oct 2, 2000 | Oct 2, 2000 | Union Gas Operating Company | Goliad | Jacob #1 | 10,900 | 17533129 |
| 500150 | Sep 28, 2000 | Sep 28, 2000 | Union Gas Operating Company | Victoria | Cooley, M. E. #8 | 12,500 | 46933519 |
| 499524 | Sep 12, 2000 | Sep 12, 2000 | Union Gas Operating Company | Victoria | Cooley, M. E. #10 | 15,000 | 46933514 |
| 498279 | Aug 9, 2000 | Aug 9, 2000 | Union Gas Operating Company | Victoria | Cooley, M.E. #6 | 11,500 | 46933428 |
| 497694 | Jul 26, 2000 | Jul 26, 2000 | Union Gas Operating Company | Victoria | Ohrt-Heinold #1 | 11,500 | 46933503 |
| 497597 | Jul 25, 2000 | Jul 25, 2000 | Union Gas Operating Company | Victoria | Dreyer, William #3 | 9,000 | 46933502 |
| 497597Amendment | Jul 25, 2000 | Jul 25, 2000 | Union Gas Operating Company | Victoria | Dreyer, William #3 | 12,000 | 46933502 |
| 497597Amendment | Jul 25, 2000 | Jul 25, 2000 | Union Gas Operating Company | Victoria | Dreyer, William #3 | 12,000 | 46933502 |
| 497431 | Jul 20, 2000 | Jul 20, 2000 | Union Gas Operating Company | De Witt | Thamm "B" #1 | 3,600 | 12331889 |
| 497430 | Jul 20, 2000 | Jul 20, 2000 | Union Gas Operating Company | Goliad | Jacob #1 | 10,900 | 17533129 |
| 497105 | Jul 12, 2000 | Jul 12, 2000 | Union Gas Operating Company | Victoria | Cooley, M. E. #1F | 3,600 | 46933498 |
| 496764 | Jun 30, 2000 | Jun 30, 2000 | Union Gas Operating Company | Victoria | Lone Star #1 | 12,000 | 46933493 |
| 496209 | Jun 15, 2000 | Jun 15, 2000 | Union Gas Operating Company | Victoria | Dreyer, William #2 | 12,000 | 46933487 |
| 494857 | May 9, 2000 | May 9, 2000 | Union Gas Operating Company | Victoria | Ohrt-Albrecht #1 | 13,000 | 46933478 |
| 494857Amendment | May 9, 2000 | May 9, 2000 | Union Gas Operating Company | Victoria | Ohrt-Albrecht #1 | 13,000 | 46933478 |
| 493737 | Apr 3, 2000 | Apr 3, 2000 | Union Gas Operating Company | Goliad | Jacob #2 | 12,000 | 17533238 |
| 492021 | Feb 11, 2000 | Feb 11, 2000 | Union Gas Operating Company | Goliad | Warfield Frisbie #1 | 3,500 | 17533229 |
| 491791 | Feb 4, 2000 | Feb 4, 2000 | Union Gas Operating Company | De Witt | Doehrman, Floyd #2 | 3,500 | 12331878 |
| 490770 | Dec 30, 1999 | Dec 30, 1999 | Union Gas Operating Company | Victoria | Watts-Gisler #1 | 12,000 | 46933456 |
| 490770Amendment | Dec 30, 1999 | Dec 30, 1999 | Union Gas Operating Company | Victoria | Watts-Gisler #1 | 12,000 | 46933456 |
| 490769 | Dec 30, 1999 | Dec 30, 1999 | Union Gas Operating Company | Goliad | Hornstein #1 | 3,500 | 17533218 |
| 490003 | Dec 2, 1999 | Dec 2, 1999 | Union Gas Operating Company | De Witt | Doehrman, Floyd #1 | 3,500 | 12331872 |
| 489997 | Dec 2, 1999 | Dec 2, 1999 | Union Gas Operating Company | Victoria | Cooley, M. E. #7 | 12,000 | 46933450 |
| 489847 | Nov 24, 1999 | Nov 24, 1999 | Union Gas Operating Company | Victoria | Thamm #1 | 3,500 | 46933448 |
| 488361 | Oct 11, 1999 | Oct 11, 1999 | Union Gas Operating Company | Victoria | Coleto Point #1 | 16,000 | 46933439 |
| 488053 | Sep 29, 1999 | Sep 29, 1999 | Union Gas Operating Company | Goliad | Jung, et Al #1 | 5,500 | 17533185 |
| 488053Amendment | Sep 29, 1999 | Sep 29, 1999 | Union Gas Operating Company | Goliad | Jung, et Al #1 | 5,500 | 17533185 |
| 487269 | Sep 3, 1999 | Sep 3, 1999 | Union Gas Operating Company | Victoria | Cooley, M. E. #6 | 12,000 | 46933428 |
| 487269Amendment | Sep 3, 1999 | Sep 3, 1999 | Union Gas Operating Company | Victoria | Cooley, M. E. #6 | 12,000 | 46933428 |
| 485827 | Jul 13, 1999 | Jul 13, 1999 | Union Gas Operating Company | Victoria | Cooley, M. E. #5 | 12,000 | 46933418 |
| 485332 | Jun 21, 1999 | Jun 21, 1999 | Union Gas Operating Company | De Witt | York Interests #1 | 12,000 | 12331859 |
| 484704 | May 21, 1999 | May 21, 1999 | Union Gas Operating Company | Lavaca | Carroll-McManus 3 #3 | 12,000 | 28532656 |
| 484382 | May 7, 1999 | May 7, 1999 | Union Gas Operating Company | Victoria | Cooley M. E. #3 | 14,000 | 46933406 |