| 474866 | Apr 1, 1998 | Apr 1, 1998 | San Antonio Gas & Oil, Inc. | Fisher | Howard #1 | 6,700 | 15132533 |
| 473201 | Feb 11, 1998 | Feb 11, 1998 | San Antonio Gas & Oil, Inc. | Fisher | Alldredge #1 | 6,500 | 15132529 |
| 472200 | Jan 16, 1998 | Jan 16, 1998 | San Antonio Gas & Oil, Inc. | Fisher | Scherwitz #1 | 6,650 | 15132528 |
| 470635 | Dec 2, 1997 | Dec 2, 1997 | San Antonio Gas & Oil, Inc. | Fisher | Whitworth #1 | 6,650 | 15132524 |
| 470635Amendment | Dec 2, 1997 | Dec 2, 1997 | San Antonio Gas & Oil, Inc. | Fisher | Whitworth #1 | 6,650 | 15132524 |
| 455647 | Nov 27, 1996 | Nov 27, 1996 | San Antonio Gas & Oil, Inc. | Lee | Dolores #1 | 5,900 | 28732485 |
| 442407 | Dec 4, 1995 | Dec 4, 1995 | San Antonio Gas & Oil, Inc. | Lee | Kurio #1B | 5,800 | 28732479 |
| 441294 | Oct 27, 1995 | Oct 27, 1995 | San Antonio Gas & Oil, Inc. | Bastrop | Act Ranch #1B | 5,600 | 02131514 |
| 440878 | Oct 16, 1995 | Oct 16, 1995 | San Antonio Gas & Oil, Inc. | Bastrop | Meuth, Leonard #1B | 5,500 | 02131513 |
| 431698 | Jan 11, 1995 | Jan 11, 1995 | San Antonio Gas & Oil, Inc. | Lee | Durrenberger, C. #7 | 5,800 | 28732458 |
| 430750 | Dec 9, 1994 | Dec 9, 1994 | San Antonio Gas & Oil, Inc. | Sutton | Askew #43 #1 | 6,000 | 43534410 |
| 429914 | Nov 15, 1994 | Nov 15, 1994 | San Antonio Gas & Oil, Inc. | Lee | Berger, Durren #6 | 5,900 | 28732451 |
| 420204 | Jan 21, 1994 | Jan 21, 1994 | San Antonio Gas & Oil, Inc. | Webb | Gates V-1268 #5 | 5,600 | 47936011 |
| 418389 | Nov 22, 1993 | Nov 22, 1993 | San Antonio Gas & Oil, Inc. | Lee | Durrenburger #5 | 5,900 | 28732405 |
| 415110 | Aug 23, 1993 | Aug 23, 1993 | San Antonio Gas & Oil, Inc. | Webb | Gates V-1270 #2 | 5,600 | 47935903 |
| 414495 | Aug 11, 1993 | Aug 11, 1993 | San Antonio Gas & Oil, Inc. | Lee | Durren Berger/Karnstadt #1 | 5,800 | 28732390 |
| 413070 | Jun 23, 1993 | Jun 23, 1993 | San Antonio Gas & Oil, Inc. | Lee | Gersch #1 | 5,800 | 28732386 |
| 413069 | Jun 23, 1993 | Jun 23, 1993 | San Antonio Gas & Oil, Inc. | Webb | Dawson #1 | 7,200 | 47935853 |
| 411996 | May 26, 1993 | May 26, 1993 | San Antonio Gas & Oil, Inc. | Lee | Gersch-Karnstadt #2 | 5,800 | 28732383 |
| 410762 | Apr 26, 1993 | Apr 26, 1993 | San Antonio Gas & Oil, Inc. | Lee | Sago Peters #1 | 5,800 | 28732380 |
| 408629 | Feb 2, 1993 | Feb 2, 1993 | San Antonio Gas & Oil, Inc. | Bastrop | Act Ranch #5 | 5,800 | 02131467 |
| 407176 | Jan 25, 1993 | Jan 25, 1993 | San Antonio Gas & Oil, Inc. | Lee | Gersch - Karnstaot #1 | 5,700 | 28732366 |
| 408053 | Jan 14, 1993 | Jan 14, 1993 | San Antonio Gas & Oil, Inc. | Lee | Durrenberger, C. #3 | 5,900 | 28732368 |
| 405545 | Nov 10, 1992 | Nov 10, 1992 | San Antonio Gas & Oil, Inc. | Bastrop | Act Ranch #4 | 5,700 | 02131461 |
| 402938 | Sep 2, 1992 | Sep 2, 1992 | San Antonio Gas & Oil, Inc. | Bastrop | Steglich, Edward #4 | 5,700 | 02131452 |
| 402297 | Aug 17, 1992 | Aug 17, 1992 | San Antonio Gas & Oil, Inc. | Lee | Lehman, D. J. #2 | 5,600 | 28732352 |
| 399940 | Jun 8, 1992 | Jun 8, 1992 | San Antonio Gas & Oil, Inc. | Bastrop | Steglich, Edward #3 | 5,800 | 02131440 |
| 398007 | Apr 8, 1992 | Apr 8, 1992 | San Antonio Gas & Oil, Inc. | Lee | Durrenberger, Clarence #2 | 5,900 | 28732335 |
| 397762 | Mar 26, 1992 | Mar 26, 1992 | San Antonio Gas & Oil, Inc. | Lee | Steglich, Edward #2 | 5,800 | 28732334 |
| 394582 | Dec 3, 1991 | Dec 3, 1991 | San Antonio Gas & Oil, Inc. | Dimmit | Ruth #1 | 3,900 | 12733047 |
| 394582Amendment | Dec 3, 1991 | Dec 3, 1991 | San Antonio Gas & Oil, Inc. | Dimmit | Ruth #1 | 3,900 | 12733047 |
| 389072 | Jun 25, 1991 | Jun 25, 1991 | San Antonio Gas & Oil, Inc. | Dimmit | Frost National Bank Trustee #13 | 4,000 | 12733026 |
| 380612 | Nov 12, 1990 | Nov 12, 1990 | San Antonio Gas & Oil, Inc. | Dimmit | Frost National Bank Trustee #12 | 3,900 | 12732956 |
| 380612Amendment | Nov 12, 1990 | Nov 12, 1990 | San Antonio Gas & Oil, Inc. | Dimmit | Frost National Bank Trustee #12 | 3,900 | 12732956 |
| 376505 | Aug 15, 1990 | Aug 15, 1990 | San Antonio Gas & Oil, Inc. | Dimmit | Ingram/Bowman #10 | 3,900 | 12732921 |
| 373981 | Jun 26, 1990 | Jun 26, 1990 | San Antonio Gas & Oil, Inc. | Dimmit | Frost National Bank, Trustee #11 | 3,900 | 12732901 |
| 373640 | May 22, 1990 | May 22, 1990 | San Antonio Gas & Oil, Inc. | Zavala | Murphy, Leonard M. et Al #1 | 3,800 | 50732328 |
| 373639 | May 22, 1990 | May 22, 1990 | San Antonio Gas & Oil, Inc. | Dimmit | Frost National Bank Trustee #10 | 3,900 | 12732890 |
| 373638 | May 22, 1990 | May 22, 1990 | San Antonio Gas & Oil, Inc. | Dimmit | Ingram-Bowman No. 8 #8 | 3,800 | 12732891 |
| 372699 | Apr 27, 1990 | Apr 27, 1990 | San Antonio Gas & Oil, Inc. | Dimmit | Whitecotton #1HH | 6,200 | 12732876 |
| 371244 | Mar 26, 1990 | Mar 26, 1990 | San Antonio Gas & Oil, Inc. | Zavala | Hale, Billy #1 | 3,600 | 50732306 |
| 370968 | Mar 16, 1990 | Mar 16, 1990 | San Antonio Gas & Oil, Inc. | Dimmit | Frost National Bank #9 | 4,000 | 12732863 |
| 370084 | Feb 20, 1990 | Feb 20, 1990 | San Antonio Gas & Oil, Inc. | Dimmit | Wilson, James A. #1 AH | 6,300 | 12732855 |
| 369799 | Feb 12, 1990 | Feb 12, 1990 | San Antonio Gas & Oil, Inc. | Dimmit | Frost National Bank #8 | 4,000 | 12732850 |
| 369132 | Jan 29, 1990 | Jan 29, 1990 | San Antonio Gas & Oil, Inc. | Dimmit | Frost National Bank #7 | 4,000 | 12732847 |
| 366087 | Nov 6, 1989 | Nov 6, 1989 | San Antonio Gas & Oil, Inc. | Dimmit | Wilson, James A. #1 | 3,900 | 12732834 |
| 365302 | Oct 18, 1989 | Oct 18, 1989 | San Antonio Gas & Oil, Inc. | Webb | Buena Vista #1 | 5,990 | 47934934 |
| 365301 | Oct 18, 1989 | Oct 18, 1989 | San Antonio Gas & Oil, Inc. | Dimmit | Sago/Exxon Bowers #1H | 6,200 | 12732832 |
| 363544 | Sep 11, 1989 | Sep 11, 1989 | San Antonio Gas & Oil, Inc. | Dimmit | Bowman, Ingram #7 #7 | 3,900 | 12732826 |
| 363546 | Sep 7, 1989 | Sep 7, 1989 | San Antonio Gas & Oil, Inc. | Dimmit | Frost National Bank Trustee #6 | 3,900 | 12732827 |
| 362394 | Aug 7, 1989 | Aug 7, 1989 | San Antonio Gas & Oil, Inc. | Goliad | Borchers, Charles #2 | 5,000 | 17532429 |
| 361308 | Jul 14, 1989 | Jul 14, 1989 | San Antonio Gas & Oil, Inc. | Dimmit | Frost National Bank Trustee #5 | 4,000 | 12732825 |
| 359060 | May 12, 1989 | May 12, 1989 | San Antonio Gas & Oil, Inc. | Goliad | Borchers, Charles #1 | 8,100 | 17532407 |
| 357010 | Mar 16, 1989 | Mar 16, 1989 | San Antonio Gas & Oil, Inc. | Dimmit | Ingram/Bowman #6 | 4,000 | 12732803 |
| 357011 | Mar 15, 1989 | Mar 15, 1989 | San Antonio Gas & Oil, Inc. | Dimmit | Frost National Bandk Tr. #4 | 4,000 | 12732802 |