| 650536 | Dec 8, 2007 | Dec 8, 2007 | Suemaur Expl. & Prod., LLC | Lefner et al Gas Unit #4 | 12,000 | 48931190 |
| 648682 | Nov 7, 2007 | Nov 7, 2007 | Cimarron Engineering Corp. | Parham #2A | 6,100 | 48931189 |
| 646767 | Sep 28, 2007 | Sep 28, 2007 | Suemaur Expl. & Prod., LLC | Majadas Inv. Corp. #1 | 15,000 | 48931188 |
| 645567Amendment | Sep 26, 2007 | Sep 26, 2007 | XTO Energy Inc. | Petru, V. A. #9 | 15,200 | 48931186 |
| 645654 | Sep 7, 2007 | Sep 7, 2007 | Abaco Operating, LLC | Doc Corbett #1 | 17,500 | 48931187 |
| 645567 | Sep 6, 2007 | Sep 6, 2007 | XTO Energy Inc. | Petru, V. A. #9 | 15,200 | 48931186 |
| 645384 | Sep 5, 2007 | Sep 5, 2007 | Samson Lone Star, LLC | Rio Farms "a" Gas Unit #2 | 12,000 | 48931185 |
| 645384Amendment | Sep 5, 2007 | Sep 5, 2007 | Pogo Producing Company LLC | Rio Farms "a" Gas Unit #2 | 12,000 | 48931185 |
| 644918 | Aug 24, 2007 | Aug 24, 2007 | Suemaur Expl. & Prod., LLC | Lefner et al Gas Unit #3 | 12,000 | 48931184 |
| 642681 | Aug 1, 2007 | Aug 1, 2007 | Sanchez Oil & Gas Corporation | Troppy Gas Unit #1 | 10,500 | 48931182 |
| 642513 | Jul 31, 2007 | Jul 31, 2007 | Square Mile Energy, L.L.C. | Tiente #1 | 11,000 | 48931183 |
| 641848 | Jul 20, 2007 | Jul 20, 2007 | Blakenergy Operating, LLC | Yturria #15RR | 3,200 | 48931179 |
| 642112 | Jul 17, 2007 | Jul 17, 2007 | Blakenergy Operating, LLC | Yturria #40 | 8,300 | 48931181 |
| 641967 | Jul 16, 2007 | Jul 16, 2007 | Blakenergy Operating, LLC | Yturria #16RR | 3,300 | 48931180 |
| 641170 | Jul 3, 2007 | Jul 3, 2007 | Suemaur Expl. & Prod., LLC | Lefner et al Gas Unit #2 | 12,000 | 48931178 |
| 639913 | Jun 8, 2007 | Jun 8, 2007 | Dominion Expl. & Prod., Inc. | Vaughan, Ben #2 | 14,500 | 48931177 |
| 638526 | Jun 1, 2007 | Jun 1, 2007 | Exxon Mobil Corporation | Kleberg, R J Jr TR Stillman Past #100 | 13,688 | 48930953 |
| 638084 | May 30, 2007 | May 30, 2007 | Hughes, Dan A. Company, L.P. | Schmelzer Unit #1 | 7,110 | 48931132 |
| 637891 | May 11, 2007 | May 11, 2007 | Square Mile Energy, L.L.C. | Lewer #1 | 13,300 | 48931175 |
| 638136 | May 9, 2007 | May 9, 2007 | Dewbre Petroleum Corporation | Thomas Unit #2 | 10,500 | 48931176 |
| 637339 | Apr 26, 2007 | Apr 26, 2007 | Dominion Expl. & Prod., Inc. | Vaughan, Ben #1 | 14,200 | 48931174 |
| 635140 | Apr 14, 2007 | Apr 14, 2007 | Exxon Mobil Corporation | Kleberg, R J Jr TR Stillman Pas #105 | 11,200 | 48930965 |
| 635331 | Mar 23, 2007 | Mar 23, 2007 | Blakenergy Operating, LLC | Yturria #13RR | 3,600 | 48931173 |
| 634481 | Mar 8, 2007 | Mar 8, 2007 | Suemaur Expl. & Prod., LLC | Ames et al GU #3 | 14,000 | 48931172 |
| 634253 | Mar 6, 2007 | Mar 6, 2007 | Sue-Ann Operating, L.C. | Yturria "A" #3 | 4,750 | 48931171 |
| 633679 | Feb 21, 2007 | Feb 21, 2007 | Dominion Expl. & Prod., Inc. | Fausto Yturria, Jr. #1 | 14,200 | 48931170 |
| 632005 | Feb 7, 2007 | Feb 7, 2007 | Exxon Mobil Corporation | Kleberg, R J Jr TR Stillman Past #85 | 12,500 | 48930928 |
| 632955 | Feb 6, 2007 | Feb 6, 2007 | Cody Energy LLC | Yturria, H. #4022 | 9,700 | 48931169 |
| 632952 | Feb 6, 2007 | Feb 6, 2007 | Blakenergy Operating, LLC | Yturria #T 8 | 8,000 | 48931168 |
| 631748 | Jan 11, 2007 | Jan 11, 2007 | King Operating Corporation | Pinnell, H P #1 | 6,500 | 48931167 |
| 631540 | Jan 9, 2007 | Jan 9, 2007 | Cody Energy LLC | H. Yturria #4020 | 10,000 | 48931166 |
| 630091 | Dec 7, 2006 | Dec 7, 2006 | Cody Energy LLC | Yturria #4024 | 9,800 | 48931165 |
| 629412 | Nov 22, 2006 | Nov 22, 2006 | Samson Lone Star LP | Rio Farms "a" Gas Unit #1 | 11,800 | 48931164 |
| 629412Amendment | Nov 22, 2006 | Nov 22, 2006 | Samson Lone Star LP | Rio Farms "a" Gas Unit #1 | 11,950 | 48931164 |
| 627756 | Oct 27, 2006 | Oct 27, 2006 | Exxon Mobil Corporation | Kleberg, R. J. Jr. Tr. Stillman #93DF | 9,754 | 48930948 |
| 627399 | Oct 25, 2006 | Oct 25, 2006 | Blakenergy Operating, LLC | Yturria #4RR | 6,800 | 48931162 |
| 627368 | Oct 20, 2006 | Oct 20, 2006 | Blakenergy Operating, LLC | Yturria #32 | 7,900 | 48931161 |
| 627753 | Oct 19, 2006 | Oct 19, 2006 | Cody Energy LLC | Yturria #4021 | 10,600 | 48931163 |
| 627753Amendment | Oct 19, 2006 | Oct 19, 2006 | Cody Energy LLC | Yturria, H. #4021 | 10,600 | 48931163 |
| 627585 | Oct 16, 2006 | Oct 16, 2006 | Suemaur Expl. & Prod., LLC | Grimes #1 | 17,000 | 48931160 |
| 626937 | Oct 3, 2006 | Oct 3, 2006 | Samson Lone Star LP | Rio Farms #1 | 11,800 | 48931159 |
| 626008 | Sep 15, 2006 | Sep 15, 2006 | Suemaur Expl. & Prod., LLC | Lefner Gas Unit #1 | 12,000 | 48931158 |
| 624681 | Aug 21, 2006 | Aug 21, 2006 | Acock Operating Limited | Pinnell, H. P. #1 | 4,000 | 48931157 |
| 624286 | Aug 14, 2006 | Aug 14, 2006 | Dominion Expl. & Prod., Inc. | Petru, V. A. #1 | 15,000 | 48931069 |
| 624236 | Aug 11, 2006 | Aug 11, 2006 | Dominion Expl. & Prod., Inc. | Petru, V. A. #7 | 15,300 | 48931156 |
| 623449 | Jul 31, 2006 | Jul 31, 2006 | Apache Corporation | Gas Unit a Zone 1 #3 | 8,000 | 48930613 |
| 622878 | Jul 19, 2006 | Jul 19, 2006 | Suemaur Expl. & Prod., LLC | Ames et al GU #2 | 12,000 | 48931155 |
| 622863 | Jul 19, 2006 | Jul 19, 2006 | El Paso Production Oil & Gas Co. | K. M. Corbett #1 | 15,000 | 48931154 |
| 622863Amendment | Jul 19, 2006 | Jul 19, 2006 | El Paso E & P Company, L. P. | Corbett #1 | 16,500 | 48931154 |
| 622863Amendment | Jul 19, 2006 | Jul 19, 2006 | El Paso E & P Company, L. P. | Corbett #1 | 16,500 | 48931154 |
| 622039 | Jul 11, 2006 | Jul 11, 2006 | Fortune Operating Company | H P Pinnell Unit C #1 | 10,000 | 48931153 |
| 622038 | Jul 11, 2006 | Jul 11, 2006 | Fortune Operating Company | H P Pinnell Unit B #1 | 10,500 | 48931152 |
| 622037 | Jul 11, 2006 | Jul 11, 2006 | Fortune Operating Company | H P Pinnell Unit A #1 | 10,500 | 48931151 |
| 619805 | May 24, 2006 | May 24, 2006 | Cimarron Engineering Corp. | Parham #1A | 6,500 | 48931150 |
| 619805Amendment | May 24, 2006 | May 24, 2006 | Cimarron Engineering Corp. | Parham #1A | 6,500 | 48931150 |
| 619428 | May 22, 2006 | May 22, 2006 | Blakenergy Operating, LLC | Yturria #34 | 7,700 | 48931149 |
| 619104 | May 11, 2006 | May 11, 2006 | Suemaur Expl. & Prod., LLC | Bondy et al Gas Unit #1 | 18,000 | 48931148 |
| 618236 | Apr 26, 2006 | Apr 26, 2006 | Sue-Ann Operating, L.C. | Yturria "A" #2 | 4,600 | 48931146 |
| 618230 | Apr 26, 2006 | Apr 26, 2006 | Sue-Ann Operating, L.C. | Yturria "B" #3 | 6,200 | 48931145 |
| 618153 | Apr 25, 2006 | Apr 25, 2006 | Sue-Ann Operating, L.C. | Yturria #1 | 4,850 | 48931144 |
| 618090 | Apr 24, 2006 | Apr 24, 2006 | Cody Energy LLC | H. Yturria #4023 | 9,200 | 48931143 |
| 613404 | Apr 6, 2006 | Apr 6, 2006 | Blakenergy Operating, LLC | Yturria #6RR | 7,000 | 48931135 |
| 616834 | Mar 31, 2006 | Mar 31, 2006 | Suemaur Expl. & Prod., LLC | Prospect Company et al Gas Unit #1 | 12,500 | 48931142 |
| 616530 | Mar 29, 2006 | Mar 29, 2006 | Dewbre Petroleum Corporation | Thomas Unit #1 | 12,300 | 48931141 |
| 615479 | Mar 15, 2006 | Mar 15, 2006 | Dewbre Petroleum Corporation | Stone Westside #1 | 4,500 | 48931140 |
| 615197 | Mar 9, 2006 | Mar 9, 2006 | Blakenergy Operating, LLC | Yturria #T 1A | 10,500 | 48931139 |
| 614757 | Feb 23, 2006 | Feb 23, 2006 | Cody Energy LLC | Yturria #4019 | 10,650 | 48931138 |
| 614353 | Feb 16, 2006 | Feb 16, 2006 | Suemaur Expl. & Prod., LLC | Ames G.U. #1 | 13,000 | 48931137 |
| 613578 | Feb 10, 2006 | Feb 10, 2006 | Blakenergy Operating, LLC | Yturria #10RR | 5,000 | 48931136 |
| 613229 | Feb 1, 2006 | Feb 1, 2006 | Blakenergy Operating, LLC | Yturria #8RR | 4,200 | 48931134 |
| 612144 | Jan 17, 2006 | Jan 17, 2006 | Blakenergy Operating, LLC | Yturria #33 | 8,100 | 48931133 |
| 611699 | Dec 29, 2005 | Dec 29, 2005 | Hughes, Dan A. Company | Schmelzer Unit #1 | 8,000 | 48931132 |
| 610866 | Dec 14, 2005 | Dec 14, 2005 | Suemaur Expl. & Prod., LLC | Rhodes Land Trust #1 | 16,000 | 48931131 |
| 609085 | Nov 10, 2005 | Nov 10, 2005 | Blakenergy Operating, LLC | Yturria #2 | 8,500 | 48931082 |
| 609170 | Nov 9, 2005 | Nov 9, 2005 | Dewbre Petroleum Corporation | Pinnell #1 | 9,600 | 48931130 |
| 607974 | Oct 17, 2005 | Oct 17, 2005 | Rincon Petroleum Corporation | Stone Brothers #1 | 9,850 | 48931129 |
| 605111 | Aug 18, 2005 | Aug 18, 2005 | Swift Energy Company | Vaughan #3 | 15,000 | 48931128 |
| 604878 | Aug 12, 2005 | Aug 12, 2005 | Suemaur Expl. & Prod., LLC | Kirsch, et Al #1 | 15,000 | 48931127 |
| 604730 | Aug 10, 2005 | Aug 10, 2005 | Blakenergy Operating, LLC | Fausto Yturria, Jr Etal "B" #T 4 | 5,700 | 48931126 |
| 604726 | Aug 10, 2005 | Aug 10, 2005 | Blakenergy Operating, LLC | Fausto Yturria, Jr Etal "B" #T 3 | 6,950 | 48931125 |
| 604725 | Aug 10, 2005 | Aug 10, 2005 | Blakenergy Operating, LLC | Fausto Yturria, Jr Etal "B" #T 2 | 7,200 | 48931124 |
| 604625 | Aug 9, 2005 | Aug 9, 2005 | Blakenergy Operating, LLC | Fausto Yturria, Jr Etal "B" #T 5 | 8,900 | 48931123 |
| 604437 | Aug 4, 2005 | Aug 4, 2005 | Blakenergy Operating, LLC | Yturria, Fausto Jr et al "A" #6 | 9,000 | 48931122 |
| 604436 | Aug 4, 2005 | Aug 4, 2005 | Blakenergy Operating, LLC | Yturria, Fausto Jr et al "B" #T 1 | 10,500 | 48931121 |
| 604062 | Jul 28, 2005 | Jul 28, 2005 | Exxon Mobil Corporation | Kleberg, R J Jr TR Stillman Past #100 | 13,688 | 48930953 |
| 601720 | Jun 7, 2005 | Jun 7, 2005 | Blakenergy Operating, LLC | Yturria #C 5RR | 4,700 | 48931120 |
| 601339 | May 27, 2005 | May 27, 2005 | Blakenergy Operating, LLC | Yturria #3RR | 3,200 | 48931117 |
| 601338 | May 27, 2005 | May 27, 2005 | Blakenergy Operating, LLC | Yturria #2RR | 3,200 | 48931119 |
| 601337 | May 27, 2005 | May 27, 2005 | Blakenergy Operating, LLC | Yturria #1RR | 3,200 | 48931118 |
| 601266 | May 27, 2005 | May 27, 2005 | Suemaur Expl. & Prod., LLC | Henderson, J.W. et al Gas Unit #4 | 16,200 | 48931116 |
| 560926 | May 19, 2005 | May 19, 2005 | Duke Energy Field Services, LP | La Gloria #55WL | 300 | 48931115 |
| 600817 | May 18, 2005 | May 18, 2005 | Dewbre Petroleum Corporation | Stone Oxbow Unit #1 | 8,700 | 48931114 |
| 600359 | May 9, 2005 | May 9, 2005 | Santos USA Corp. | M E Garcia #1 | 15,500 | 48931113 |
| 557843 | May 6, 2005 | May 6, 2005 | D.G. Miller Oil & Gas, L.P. | Pollock #1 | 11,600 | 48930707 |
| 558954 | Mar 14, 2005 | Mar 14, 2005 | Tucker Operating Co., Inc. | Yturria #3 | 7,200 | 48931112 |
| 558356 | Mar 1, 2005 | Mar 1, 2005 | Tucker Operating Co., Inc. | Yturria #5 | 7,900 | 48931111 |
| 558356Amendment | Mar 1, 2005 | Mar 1, 2005 | Blakenergy Operating, LLC | Yturria #5 | 7,900 | 48931111 |
| 558045 | Feb 28, 2005 | Feb 28, 2005 | Citation Oil & Gas Corp. | Willamar West Unit #67 A | 8,200 | 48930926 |
| 557605 | Feb 25, 2005 | Feb 25, 2005 | Swift Energy Company | Thomas #1 | 15,000 | 48931110 |
| 557605Amendment | Feb 25, 2005 | Feb 25, 2005 | Swift Energy Company | Thomas #1 | 15,000 | 48931110 |