| 521011 | Jun 20, 2002 | Jun 20, 2002 | Cody Energy LLC | Yturria, Frank D. #3022 | 8,850 | 48931051 |
| 520970 | Jun 17, 2002 | Jun 17, 2002 | Exxon Mobil Corporation | Kleberg, R. J. Jr Tr. Stillman #111 | 11,245 | 48930984 |
| 520931 | Jun 12, 2002 | Jun 12, 2002 | Suemaur Expl. & Prod., LLC | J. W. Henderson, et al Gas Unit #2 | 16,000 | 48931050 |
| 520586 | Jun 11, 2002 | Jun 11, 2002 | Citation Oil & Gas Corp. | Willamar West Miocene Unit #M 28 | 8,100 | 48930756 |
| 520585 | Jun 7, 2002 | Jun 7, 2002 | Citation Oil & Gas Corp. | Willamar East Unit #25 | 7,085 | 48930077 |
| 520037 | May 20, 2002 | May 20, 2002 | Exxon Mobil Corporation | Kleberg, R.J. Jr. Tr. Stillman #93 | 9,754 | 48930948 |
| 520037Amendment | May 20, 2002 | May 20, 2002 | Exxon Mobil Corporation | Kleberg, R.J. Jr. Tr. Stillman #93 | 9,754 | 48930948 |
| 519527 | May 1, 2002 | May 1, 2002 | Anschutz Exploration Corporation | Yturria, F. D. #302 | 15,000 | 48931043 |
| 519417 | Apr 30, 2002 | Apr 30, 2002 | Exxon Mobil Corporation | Kleberg, R. J. Jr. Tr. Stillman #95 | 9,800 | 48930952 |
| 519417Amendment | Apr 30, 2002 | Apr 30, 2002 | Exxon Mobil Corporation | Kleberg, R. J. Jr. Tr. Stillman #95 | 9,800 | 48930952 |
| 518413 | Mar 19, 2002 | Mar 19, 2002 | Cody Energy LLC | Yturria, Frank D. #3021 | 4,000 | 48931049 |
| 517656 | Feb 19, 2002 | Feb 19, 2002 | Maynard Oil Co. | Yturria Cattle Co #26 | 3,390 | 48930955 |
| 517628 | Feb 14, 2002 | Feb 14, 2002 | Cody Energy LLC | Yturria, Frank D. #307 | 8,121 | 48931026 |
| 515369 | Dec 21, 2001 | Dec 21, 2001 | Citation Oil & Gas Corp. | Willamar Community E #10 | 6,000 | 48931046 |
| 514301 | Nov 27, 2001 | Nov 27, 2001 | Citation Oil & Gas Corp. | Willamar West Unit #192 | 8,050 | 48930884 |
| 515425 | Nov 20, 2001 | Nov 20, 2001 | Dewbre Petroleum Corporation | Stone #1 | 10,500 | 48931048 |
| 515373 | Nov 20, 2001 | Nov 20, 2001 | Cody Energy LLC | Yturria, Frank D. #3020 | 5,200 | 48931047 |
| 515026 | Nov 2, 2001 | Nov 2, 2001 | Cody Energy LLC | Yturria, Frank D. #306 | 10,700 | 48931035 |
| 515013 | Nov 2, 2001 | Nov 2, 2001 | Cody Energy LLC | Yturria, Frank D. et Al #302 | 9,206 | 48931008 |
| 513995 | Sep 27, 2001 | Sep 27, 2001 | Swift Energy Company | Rodriguez #1 | 14,300 | 48931045 |
| 513498 | Sep 10, 2001 | Sep 10, 2001 | Cody Energy LLC | Yturria, Frank D. #308 | 9,450 | 48931030 |
| 513498Amendment | Sep 10, 2001 | Sep 10, 2001 | Cody Energy LLC | Yturria, Frank D. #308T | 10,900 | 48931030 |
| 513498Amendment | Sep 10, 2001 | Sep 10, 2001 | Cody Energy LLC | Yturria, Frank D. #308T | 10,900 | 48931030 |
| 513485 | Sep 10, 2001 | Sep 10, 2001 | Cody Energy LLC | Yturria, Frank D. et Al #303 | 6,790 | 48931011 |
| 513485Amendment | Sep 10, 2001 | Sep 10, 2001 | Cody Energy LLC | Yturria, Frank D. et Al #303 | 6,790 | 48931011 |
| 512893 | Aug 27, 2001 | Aug 27, 2001 | Cody Energy LLC | Yturria, Frank D. et Al #304T | 11,000 | 48931016 |
| 512396 | Aug 10, 2001 | Aug 10, 2001 | Hughes, Dan A. Company | Pinnell, HP "D" #1 | 8,500 | 48931044 |
| 510576 | Jul 27, 2001 | Jul 27, 2001 | Exxon Mobil Corporation | Kleberg, R. J. Jr. Tr. Stillman #50 | 13,985 | 48930859 |
| 510537 | Jul 27, 2001 | Jul 27, 2001 | Exxon Mobil Corporation | Kleberg, R. J. Jr. Tr. Stillman #101 | 13,226 | 48930961 |
| 509841 | Jun 7, 2001 | Jun 7, 2001 | Cody Energy LLC | Yturria L & C Co. NCT-2 #45 | 6,560 | 48930059 |
| 509840 | Jun 7, 2001 | Jun 7, 2001 | Cody Energy LLC | Yturria, Frank D. #3016 | 6,930 | 48931031 |
| 509858 | Jun 5, 2001 | Jun 5, 2001 | Exxon Mobil Corporation | Kleberg, R. J. Jr. Tr. Stillman #108 | 10,770 | 48930967 |
| 509298 | May 22, 2001 | May 22, 2001 | Exxon Mobil Corporation | Kleberg, R. J. Jr. Tr. Stillman #97 | 9,580 | 48930957 |
| 509297 | May 22, 2001 | May 22, 2001 | Exxon Mobil Corporation | Kleberg, R.J. Jr. Tr. Stillman #98 | 9,405 | 48930962 |
| 508638 | May 10, 2001 | May 10, 2001 | Cody Energy LLC | Yturria, Frank D. et Al #304T | 11,000 | 48931016 |
| 508638Amendment | May 10, 2001 | May 10, 2001 | Cody Energy LLC | Yturria, Frank D. #304C | 11,000 | 48931016 |
| 508158 | Apr 27, 2001 | Apr 27, 2001 | Anschutz Exploration Corporation | Yturria, F. D. #302 | 15,000 | 48931043 |
| 508111 | Apr 27, 2001 | Apr 27, 2001 | Lgdc Corporation | Corbett Ranch #1 | 10,800 | 48931042 |
| 506867 | Mar 22, 2001 | Mar 22, 2001 | Cody Energy LLC | Yturria, H. #404 | 8,250 | 48931041 |
| 506867Amendment | Mar 22, 2001 | Mar 22, 2001 | Cody Energy LLC | Yturria, H. #404 | 8,250 | 48931041 |
| 506631 | Mar 16, 2001 | Mar 16, 2001 | Exxon Mobil Corporation | Kleberg, R. J. Fr. Tr. Stillman #120 | 9,280 | 48930989 |
| 506552 | Mar 15, 2001 | Mar 15, 2001 | Suemaur Expl. & Prod., LLC | Henderson, J. W. #1 | 16,000 | 48931040 |
| 506552Amendment | Mar 15, 2001 | Mar 15, 2001 | Suemaur Expl. & Prod., LLC | Henderson, J. W. #1 | 16,000 | 48931040 |
| 506535 | Mar 15, 2001 | Mar 15, 2001 | EOG Resources, Inc. | Morrow #1 | 11,000 | 48931039 |
| 506458 | Mar 13, 2001 | Mar 13, 2001 | Cody Energy LLC | Yturria, H. #402 | 11,000 | 48931018 |
| 506085 | Mar 5, 2001 | Mar 5, 2001 | Cody Energy LLC | Yturria, Frank D. #308 | 10,900 | 48931030 |
| 506085Amendment | Mar 5, 2001 | Mar 5, 2001 | Cody Energy LLC | Yturria, Frank D. #308 | 10,900 | 48931030 |
| 505004 | Feb 8, 2001 | Feb 8, 2001 | Modern Exploration, Inc. | Sailor Unit #1 | 6,150 | 48931038 |
| 504471 | Jan 24, 2001 | Jan 24, 2001 | Cody Energy LLC | Yturria, Frank D. #317 | 8,501 | 48931037 |
| 504471Amendment | Jan 24, 2001 | Jan 24, 2001 | Cody Energy LLC | Yturria, Frank D. #3017 | 8,620 | 48931037 |
| 504206 | Jan 18, 2001 | Jan 18, 2001 | Dominion Expl. & Prod., Inc. | Kenaf Industries Unit #2 | 4,200 | 48931036 |
| 504206Amendment | Jan 18, 2001 | Jan 18, 2001 | Dominion Expl. & Prod., Inc. | Kenaf Industries Unit #2 | 3,600 | 48931036 |
| 503954 | Jan 16, 2001 | Jan 16, 2001 | Citation Oil & Gas Corp. | Willamar East Unit #28 | 7,850 | 48930970 |
| 503466 | Dec 27, 2000 | Dec 27, 2000 | Cody Energy LLC | Yturria, Frank D. #306 | 10,700 | 48931035 |
| 503466Amendment | Dec 27, 2000 | Dec 27, 2000 | Cody Energy LLC | Yturria, Frank D. #306 | 10,760 | 48931035 |
| 503121 | Dec 15, 2000 | Dec 15, 2000 | Cody Energy LLC | Yturria, Frank D. et Al #304 | 8,720 | 48931016 |
| 502560 | Dec 1, 2000 | Dec 1, 2000 | Swift Energy Company | Vaughn #1 | 16,700 | 48931033 |
| 502387 | Nov 29, 2000 | Nov 29, 2000 | Modern Exploration, Inc. | Parham, Ellie #1 | 6,284 | 48930038 |
| 502288 | Nov 22, 2000 | Nov 22, 2000 | Exxon Mobil Corporation | Kleberg, R. J. Jr. Tr. Stillman #107 | 11,877 | 48930971 |
| 502032 | Nov 17, 2000 | Nov 17, 2000 | Anschutz Exploration Corporation | Yturria, H. #401 | 16,000 | 48931032 |
| 499490 | Oct 10, 2000 | Oct 10, 2000 | Cody Energy LLC | Yturria, Frank D. et Al #304 | 9,000 | 48931016 |
| 500105 | Sep 27, 2000 | Sep 27, 2000 | Cody Energy LLC | Yturria, Frank D. #307 | 8,300 | 48931026 |
| 500105Amendment | Sep 27, 2000 | Sep 27, 2000 | Cody Energy LLC | Yturria, Frank D. #307 | 8,927 | 48931026 |
| 499316 | Sep 7, 2000 | Sep 7, 2000 | Exxon Mobil Corporation | Kleberg, R. J. Jr. Tr. Stillman #87 | 14,000 | 48930944 |
| 499139 | Aug 31, 2000 | Aug 31, 2000 | Cody Energy LLC | Yturria, Frank D. et Al #302 | 9,106 | 48931008 |
| 499139Amendment | Aug 31, 2000 | Aug 31, 2000 | Cody Energy LLC | Yturria, Frank D. et Al #302T | 9,206 | 48931008 |
| 499094 | Aug 31, 2000 | Aug 31, 2000 | Cody Energy LLC | Yturria, Frank D. et Al #3016 | 8,500 | 48931031 |
| 499094Amendment | Aug 31, 2000 | Aug 31, 2000 | Cody Energy LLC | Yturria, Frank D. #3016 | 8,500 | 48931031 |
| 498139 | Aug 14, 2000 | Aug 14, 2000 | Apache Corporation | Geis, Harvey #1 | 8,320 | 48920019 |
| 498028 | Aug 8, 2000 | Aug 8, 2000 | Citation Oil & Gas Corp. | Raymond, Leonora C. #3 | 5,135 | 48930676 |
| 498168 | Aug 7, 2000 | Aug 7, 2000 | Cody Energy LLC | Yturria, Frank D. #303 | 6,960 | 48931011 |
| 498095 | Aug 4, 2000 | Aug 4, 2000 | Cody Energy LLC | Yturria, Frank D. #308 | 9,816 | 48931030 |
| 498095Amendment | Aug 4, 2000 | Aug 4, 2000 | Cody Energy LLC | Yturria, Frank D. #308 | 10,900 | 48931030 |
| 497411 | Jul 21, 2000 | Jul 21, 2000 | Anschutz Exploration Corporation | Yturria, Frank D. #1 | 16,000 | 48931029 |
| 496647 | Jun 29, 2000 | Jun 29, 2000 | Dominion Expl. & Prod., Inc. | Kenaf Industries Unit #1 | 4,100 | 48931028 |
| 496363 | Jun 20, 2000 | Jun 20, 2000 | Exxon Mobil Corporation | Kleberg, R. J. Jr. Tr. Stillman #125 | 12,000 | 48931027 |
| 494820 | May 8, 2000 | May 8, 2000 | Cody Energy LLC | Yturria, Frank D. #307 | 9,000 | 48931026 |
| 494820Amendment | May 8, 2000 | May 8, 2000 | Cody Energy LLC | Yturria, Frank D. #307 | 9,500 | 48931026 |
| 494819 | May 8, 2000 | May 8, 2000 | Cody Energy LLC | Yturria, Frank D. #305 | 9,000 | 48931025 |
| 494819Amendment | May 8, 2000 | May 8, 2000 | Cody Energy LLC | Yturria, Frank D. #305 | 9,000 | 48931025 |
| 494638 | May 5, 2000 | May 5, 2000 | Cody Energy LLC | Yturria, H. #403 | 11,000 | 48931024 |
| 494638Amendment | May 5, 2000 | May 5, 2000 | Cody Energy LLC | Yturria, H. #403 | 11,000 | 48931024 |
| 493808 | Apr 6, 2000 | Apr 6, 2000 | Brigham Oil & Gas, L.P. | Pinnell, H. P. #4 | 8,000 | 48931023 |
| 493700 | Apr 5, 2000 | Apr 5, 2000 | Citation Oil & Gas Corp. | Cavazos, Nicolas #7 | 5,300 | 48930754 |
| 493700Amendment | Apr 5, 2000 | Apr 5, 2000 | Citation Oil & Gas Corp. | Cavazos, Nicolas #7 | 5,300 | 48930754 |
| 493525 | Mar 29, 2000 | Mar 29, 2000 | Midcon Texas PL Operator, Inc. | Rectifier #4 | 248 | 48931022 |
| 493523 | Mar 29, 2000 | Mar 29, 2000 | Midcon Texas PL Operator, Inc. | Rectifier #3 | 316 | 48931021 |
| 493039 | Mar 16, 2000 | Mar 16, 2000 | Hughes, Dan A. Company | Pinnell, H. P. "C" #2 | 7,500 | 48931019 |
| 493043 | Mar 14, 2000 | Mar 14, 2000 | Modern Exploration, Inc. | Armendaiz #1 | 4,900 | 48931020 |
| 491335 | Jan 26, 2000 | Jan 26, 2000 | Esenjay Exploration, Inc | Yturria, Frank D. et Al #302C | 9,106 | 48931008 |
| 491206 | Jan 25, 2000 | Jan 25, 2000 | Esenjay Exploration, Inc | Yturria, Frank D. et Al #301 | 8,770 | 48931005 |
| 491072 | Jan 21, 2000 | Jan 21, 2000 | CNG Producing Company | Fitzgerald, Gloria L. #1 | 14,200 | 48931017 |
| 491072Amendment | Jan 21, 2000 | Jan 21, 2000 | CNG Producing Company | Fitzgerald, Gloria L. #1 | 14,700 | 48931017 |
| 491186 | Jan 19, 2000 | Jan 19, 2000 | Esenjay Exploration, Inc | Yturria, H. #402 | 13,000 | 48931018 |
| 488592 | Oct 19, 1999 | Oct 19, 1999 | Esenjay Exploration, Inc | Yturria, Frank D. #304 | 11,000 | 48931016 |
| 488592Amendment | Oct 19, 1999 | Oct 19, 1999 | Esenjay Exploration, Inc | Yturria, Frank D. et Al #304 | 11,000 | 48931016 |
| 488171 | Oct 5, 1999 | Oct 5, 1999 | Esenjay Exploration, Inc | Yturria, H. #401 | 9,500 | 48931015 |
| 488171Amendment | Oct 5, 1999 | Oct 5, 1999 | Esenjay Exploration, Inc | Yturria, H. et Al #401 | 9,500 | 48931015 |
| 487583 | Sep 15, 1999 | Sep 15, 1999 | Brigham Oil & Gas, L.P. | Pinnell, H. P. #1R | 12,000 | 48931014 |
| 486598 | Aug 12, 1999 | Aug 12, 1999 | Brigham Oil & Gas, L.P. | Pinell, H. P. #1 | 11,000 | 48931013 |