| 485974 | Jul 23, 1999 | Jul 23, 1999 | Hughes, Dan A. Company | Pinnell, H. P. "C" #1 | 8,000 | 48931012 |
| 485354 | Jul 1, 1999 | Jul 1, 1999 | Apache Corporation | La Sal Vieja Gas Unit #2 | 10,500 | 48930584 |
| 484933 | Jun 28, 1999 | Jun 28, 1999 | Mitchell Energy Corporation | Harvey Geis Unit #1 | 10,216 | 48900536 |
| 484980 | Jun 8, 1999 | Jun 8, 1999 | Exxon Corp. | Kleberg, R. J. Jr. Tr. Stillman #111 | 11,677 | 48930984 |
| 484409 | May 11, 1999 | May 11, 1999 | Esenjay Exploration, Inc | Yturria, Frank D. et Al #3 | 8,000 | 48931011 |
| 484409Amendment | May 11, 1999 | May 11, 1999 | Esenjay Exploration, Inc | Yturria, Frank D. et Al #3 | 8,000 | 48931011 |
| 484117 | Apr 26, 1999 | Apr 26, 1999 | Ultra Oil & Gas, Inc. | Armendaiz #1 | 4,000 | 48931010 |
| 483138 | Mar 11, 1999 | Mar 11, 1999 | Maynard Oil Co. | Yturria Cattle Co #26 | 6,150 | 48930955 |
| 482354 | Feb 2, 1999 | Feb 2, 1999 | Citation Oil & Gas Corp. | Bucy, G. W. #3 | 7,967 | 48900365 |
| 481561 | Dec 22, 1998 | Dec 22, 1998 | Citation Oil & Gas Corp. | Bucy #1 | 8,100 | 48930885 |
| 480524 | Nov 2, 1998 | Nov 2, 1998 | Exxon Corp. | Kleberg, R.J., Jr. Tr. Stillman #94 | 8,329 | 48930951 |
| 480560 | Oct 30, 1998 | Oct 30, 1998 | Osborn Heirs Company | Neal #1 | 12,500 | 48931009 |
| 479393 | Oct 9, 1998 | Oct 9, 1998 | Mitchell Energy Corporation | Geis, H. #2 | 9,580 | 48930688 |
| 479281 | Sep 4, 1998 | Sep 4, 1998 | MW Petroleum Corporation | Holloway, C. R. #2 | 8,220 | 48930613 |
| 477689 | Jul 3, 1998 | Jul 3, 1998 | Pioneer Natural Res. USA, Inc. | Sauz Ranch Mulatos Pasture #10 | 7,820 | 48900205 |
| 477656 | Jul 2, 1998 | Jul 2, 1998 | Esenjay Exploration, Inc | Yturria, Frank D., et Al #2 | 10,000 | 48931008 |
| 477273 | Jun 24, 1998 | Jun 24, 1998 | Citation Oil & Gas Corp. | Willamar West Unit #163 | 8,100 | 48930807 |
| 476254 | May 20, 1998 | May 20, 1998 | Exxon Corp. | Kleberg, R. J. Jr. Tr. Stillman #134 | 12,500 | 48931007 |
| 475606 | Apr 23, 1998 | Apr 23, 1998 | Exxon Corp. | Tordilla Field Gas Unit 1 #4 | 12,500 | 48931006 |
| 475476 | Apr 20, 1998 | Apr 20, 1998 | Esenjay Petroleum Corp. | Yturria Land & Livestock Company #1 | 10,500 | 48931005 |
| 473422 | Mar 20, 1998 | Mar 20, 1998 | Exxon Corp. | Kleberg, R.J. Jr.tr. Stillman #113 | 11,400 | 48931004 |
| 473532 | Feb 24, 1998 | Feb 24, 1998 | Exxon Corp. | Kleberg, R.J. Jr. Tr. Stillman #98 | 9,859 | 48930962 |
| 473421 | Feb 24, 1998 | Feb 24, 1998 | Exxon Corp. | Kleberg, R.J. Jr. Tr. Stillman #93 | 9,754 | 48930948 |
| 473004 | Feb 18, 1998 | Feb 18, 1998 | Exxon Corp. | Kleberg, R. J. Jr. Tr.-Stillman #133 | 11,600 | 48931003 |
| 472961 | Feb 4, 1998 | Feb 4, 1998 | Exxon Corp. | Kleberg, R. J. Jr. Tr. Stillman #132 | 14,500 | 48931002 |
| 470543 | Nov 25, 1997 | Nov 25, 1997 | Exxon Corp. | Kleberg, R. J. Jr. Tr. Stillman #121 | 10,300 | 48931001 |
| 467193 | Oct 1, 1997 | Oct 1, 1997 | Exxon Corp. | Tordilla Field Gas Unit 1 #3 | 13,000 | 48930999 |
| 467619 | Sep 15, 1997 | Sep 15, 1997 | Sanchez-O'Brien Oil & Gas Corp. | J. W. Wilson GU #1 | 13,000 | 48931000 |
| 467299 | Sep 15, 1997 | Sep 15, 1997 | Mueller Engineering Corp. | Armendaiz et Al #3 | 2,596 | 48930036 |
| 465656 | Aug 29, 1997 | Aug 29, 1997 | Exxon Corp. | Thomas, M.G. #3 | 13,400 | 48930998 |
| 465656Amendment | Aug 29, 1997 | Aug 29, 1997 | Exxon Corp. | Thomas, M. G. #3 | 13,400 | 48930998 |
| 466039 | Aug 8, 1997 | Aug 8, 1997 | Exxon Corp. | Kleberg, R. J. Jr. Tr. Stillman #111 | 11,392 | 48930984 |
| 464796 | Jul 17, 1997 | Jul 17, 1997 | Sanchez-O'Brien Oil & Gas Corp. | Garcia, J. A. #1 | 13,500 | 48930997 |
| 464191 | Jun 24, 1997 | Jun 24, 1997 | Exxon Corp. | Kleberg, R.J. Jr. TR Stillman #119 | 13,800 | 48930996 |
| 463713 | Jun 13, 1997 | Jun 13, 1997 | Parker & Parsley Development L.P | Sauz Ranch Mulatos Pasture #D 1R | 18,000 | 48930995 |
| 460341 | May 23, 1997 | May 23, 1997 | Citation Oil & Gas Corp. | Cavazos, Nicolas #2 | 7,800 | 48900428 |
| 462696 | May 21, 1997 | May 21, 1997 | Parker & Parsley Development L.P | Sauz Ranch Mulatos Pasture #D 1 | 18,000 | 48930994 |
| 461463 | Apr 30, 1997 | Apr 30, 1997 | Maynard Oil Co. | Yturria Cattle Co. #3 | 6,815 | 48900012 |
| 461536 | Apr 23, 1997 | Apr 23, 1997 | Exxon Corp. | Kleberg, R. J. Jr. Tr. Stillman #114 | 13,200 | 48930993 |
| 460959 | Apr 10, 1997 | Apr 10, 1997 | Exxon Corp. | Kleberg, R. J. Jr. Tr. Stillman #112 | 13,200 | 48930992 |
| 460765 | Apr 9, 1997 | Apr 9, 1997 | Citation Oil & Gas Corp. | Willamar Community "E" #9 | 6,800 | 48930991 |
| 460619 | Apr 2, 1997 | Apr 2, 1997 | Parker & Parsley Development L.P | Sauz Ranch Nopal #3R | 9,000 | 48930990 |
| 459660 | Mar 10, 1997 | Mar 10, 1997 | Exxon Corp. | Kleberg, R. J. Jr. Tr. Stillman #104 | 12,176 | 48930972 |
| 459659 | Mar 10, 1997 | Mar 10, 1997 | Exxon Corp. | Kleberg, R. J. Jr. Tr. Stillman #120 | 10,300 | 48930989 |
| 459293 | Feb 28, 1997 | Feb 28, 1997 | Exxon Corp. | Kleberg, R. J. Jr. TR Stillman #117 | 13,500 | 48930988 |
| 459120 | Feb 25, 1997 | Feb 25, 1997 | Exxon Corp. | Kleberg, R. J. Jr. Tr. Stillman #108 | 10,880 | 48930967 |
| 458219 | Feb 6, 1997 | Feb 6, 1997 | Parker & Parsley Development L.P | Sauz Ranch Nopal #3 | 9,000 | 48930987 |
| 458063 | Jan 31, 1997 | Jan 31, 1997 | Exxon Corp. | Kleberg, R.j.jr. Tr. Stillman #94 | 8,738 | 48930951 |
| 457851 | Jan 28, 1997 | Jan 28, 1997 | Parker & Parsley Development L.P | Sauz Ranch Mulatos Pasture #169 | 7,550 | 48930640 |
| 457850 | Jan 28, 1997 | Jan 28, 1997 | Parker & Parsley Development L.P | Sauz Ranch Mulatos Pasture #19 | 7,650 | 48900330 |
| 457560 | Jan 21, 1997 | Jan 21, 1997 | Exxon Corp. | Kleberg, R. J. Jr. Tr. Stillman #118 | 12,300 | 48930986 |
| 457345 | Jan 21, 1997 | Jan 21, 1997 | Hunt Petroleum Corporation | Thomas #1 | 15,000 | 48930985 |
| 457223 | Jan 10, 1997 | Jan 10, 1997 | Exxon Corp. | Kleberg, R. J. Jr. Tr. Stillman #111 | 12,300 | 48930984 |
| 455491 | Dec 5, 1996 | Dec 5, 1996 | Parker & Parsley Development L.P | Sauz Ranch Mulatos Pasture #166 | 6,800 | 48930637 |
| 455551 | Nov 25, 1996 | Nov 25, 1996 | Exxon Corp. | Kleberg, R. J. Jr. Tr. Stillman #97 | 9,415 | 48930957 |
| 455137 | Nov 15, 1996 | Nov 15, 1996 | Parker & Parsley Development L.P | Sauz Ranch Nopal #1 | 8,900 | 48930982 |
| 455136 | Nov 15, 1996 | Nov 15, 1996 | Parker & Parsley Development L.P | Sauz Ranch Nopal #2 | 8,900 | 48930983 |
| 455024 | Nov 12, 1996 | Nov 12, 1996 | Parker & Parsley Development L.P | Sauz Ranch Mulatos Pasture #170 | 6,350 | 48930652 |
| 454529 | Oct 31, 1996 | Oct 31, 1996 | Parker & Parsley Development L.P | Sauz Ranch Mulatos Pasture #176 | 8,450 | 48930747 |
| 453237 | Oct 3, 1996 | Oct 3, 1996 | Parker & Parsley Development L.P | Sauz Ranch Mulatos Pasture #201 | 9,065 | 48930879 |
| 453237Amendment | Oct 3, 1996 | Oct 3, 1996 | Parker & Parsley Development L.P | Sauz Ranch Mulatos Pasture #201 | 9,065 | 48930879 |
| 452933 | Sep 23, 1996 | Sep 23, 1996 | Parker & Parsley Development L.P | Sauz Ranch Mulatos Pasture #175 | 6,080 | 48930673 |
| 452961 | Sep 20, 1996 | Sep 20, 1996 | Exxon Corp. | Kleberg,r.j.jr.tr.stillman #70 | 9,082 | 48930741 |
| 452782 | Sep 18, 1996 | Sep 18, 1996 | Exxon Corp. | Kleberg,r.j.jr.tr. Stillman #70 | 9,430 | 48930741 |
| 451393 | Aug 27, 1996 | Aug 27, 1996 | Citation Oil & Gas Corp. | Bell, S. H. #7 | 6,700 | 48930981 |
| 451214 | Aug 12, 1996 | Aug 12, 1996 | MW Petroleum Corporation | 7400' Gas Unit #1 | 7,700 | 48900517 |
| 451037 | Aug 12, 1996 | Aug 12, 1996 | Corda Corporation | Bledsoe Unit #1 | 10,500 | 48900039 |
| 449654 | Jul 2, 1996 | Jul 2, 1996 | Mueller Engineering Corp. | Armendaiz "B" #2 | 2,710 | 48930074 |
| 449418 | Jun 24, 1996 | Jun 24, 1996 | Petro-Hunt Corporation | Yturria L. & C. Co. NCT-2 #45 | 6,280 | 48930059 |
| 448351 | May 24, 1996 | May 24, 1996 | Citation Oil & Gas Corp. | Willamar Community "E" #8 | 6,700 | 48930979 |
| 448347 | May 24, 1996 | May 24, 1996 | National Energy Group, Inc. | Corbett Fryer Dobbin Unit #1 | 10,500 | 48930980 |
| 448347Amendment | May 24, 1996 | May 24, 1996 | National Energy Group, Inc. | Corbett Fryer Dobbin Unit #1 | 10,500 | 48930980 |
| 447576 | Apr 30, 1996 | Apr 30, 1996 | Corda Corporation | Morrow Unit #1 | 10,500 | 48930978 |
| 447455 | Apr 25, 1996 | Apr 25, 1996 | Exxon Corp. | Kleberg, R. J. Jr. Tr. Stillman #110 | 13,200 | 48930976 |
| 447454 | Apr 25, 1996 | Apr 25, 1996 | Exxon Corp. | Kleberg, R. J. Jr. Tr. Stillman #109 | 12,530 | 48930977 |
| 444873 | Apr 3, 1996 | Apr 3, 1996 | MW Petroleum Corporation | Gas Unit a Zone 1 #2 | 8,230 | 48930716 |
| 446273 | Mar 27, 1996 | Mar 27, 1996 | Saga Pet. Ltd Liability Co of Co | Yturria Cattle Co. #13 | 5,359 | 48930849 |
| 445440 | Mar 1, 1996 | Mar 1, 1996 | Sanchez-O'Brien Oil & Gas Corp. | Rudman, Duke #1 | 16,660 | 48930975 |
| 445070 | Feb 22, 1996 | Feb 22, 1996 | Exxon Corp. | Kleberg, R. J. Jr. Tr. Stillman #98 | 9,859 | 48930962 |
| 444357 | Feb 8, 1996 | Feb 8, 1996 | Citation Oil & Gas Corp. | Willamar West Unit #168 | 8,050 | 48930763 |
| 444308 | Jan 31, 1996 | Jan 31, 1996 | Exxon Corp. | Kleberg, R.j.jr.tr.stillman #96 | 9,206 | 48930954 |
| 444308Amendment | Jan 31, 1996 | Jan 31, 1996 | Exxon Corp. | Kleberg, R.j.jr.tr.stillman #96 | 9,206 | 48930954 |
| 444002 | Jan 26, 1996 | Jan 26, 1996 | Maynard Oil Co. | Yturria Cattle Co. #26 | 6,150 | 48930955 |
| 443478 | Jan 9, 1996 | Jan 9, 1996 | Petro-Hunt Corporation | Yturria L & C Co. NCT-2 #46 | 6,177 | 48930073 |
| 443239 | Jan 2, 1996 | Jan 2, 1996 | Citation Oil & Gas Corp. | Willamar West Unit #170 | 8,102 | 48930771 |
| 443124 | Dec 21, 1995 | Dec 21, 1995 | Exxon Corp. | Sauz Ranch Mulatos Pasture #188 | 6,776 | 48930868 |
| 442846 | Dec 19, 1995 | Dec 19, 1995 | National Energy Group, Inc. | Corbett, C. M. #1 | 10,400 | 48930974 |
| 442846Amendment | Dec 19, 1995 | Dec 19, 1995 | National Energy Group, Inc. | Corbitt, C. M. #1 | 10,400 | 48930974 |
| 442057 | Dec 19, 1995 | Dec 19, 1995 | Slimhole Engineering Co., Inc. | Todd, Robert S. Trust #1 | 5,600 | 48930973 |
| 442283 | Dec 1, 1995 | Dec 1, 1995 | MW Petroleum Corporation | 7300' Gas Unit #1 | 7,986 | 48930939 |
| 442030 | Nov 17, 1995 | Nov 17, 1995 | Exxon Corp. | Kleberg, R. J. Jr. Tr. Stillman #104 | 14,500 | 48930972 |
| 441511 | Nov 2, 1995 | Nov 2, 1995 | Exxon Corp. | Kleberg, R.J. Jr. Tr. Stillman #93 | 9,710 | 48930948 |
| 440764 | Oct 11, 1995 | Oct 11, 1995 | Exxon Corp. | Kleberg, R.J. Jr. Tr. Stillman #107 | 12,850 | 48930971 |
| 440764Amendment | Oct 11, 1995 | Oct 11, 1995 | Exxon Corp. | Kleberg, R.J. Jr. Tr. Stillman #107 | 13,500 | 48930971 |
| 440124 | Sep 21, 1995 | Sep 21, 1995 | Exxon Corp. | Kleberg, R.j.jr.tr. Stillman #94D | 10,000 | 48930951 |
| 437719 | Jul 17, 1995 | Jul 17, 1995 | Citation Oil & Gas Corp. | Willamar East Unit #28 | 8,000 | 48930970 |
| 437690 | Jul 11, 1995 | Jul 11, 1995 | Anschutz Exploration Corporation | Durivage #1 | 8,500 | 48930969 |
| 437439 | Jun 30, 1995 | Jun 30, 1995 | Exxon Corp. | Kleberg, R. J. Jr. Tr. Stillman #77 | 9,617 | 48930831 |
| 437214 | Jun 23, 1995 | Jun 23, 1995 | Exxon Corp. | Kleberg, R.j.jr.tr. Stillman #96 | 9,746 | 48930954 |
| 436780 | Jun 12, 1995 | Jun 12, 1995 | Exxon Corp. | Kleberg, R.j.jr.tr.stillman #94 | 9,777 | 48930951 |