| 643429 | Aug 8, 2007 | Aug 8, 2007 | Anadarko E&P Company LP | BP Black Stone Grigsby A-163 #1H | 14,800 | 24130752 |
| 642725 | Jul 31, 2007 | Jul 31, 2007 | Anadarko E&P Company LP | BP America a-187 Unit #1H | 14,500 | 24130751 |
| 642725Amendment | Jul 31, 2007 | Jul 31, 2007 | Anadarko E&P Company LP | BP America a-187 Unit #1H | 14,900 | 24130751 |
| 639103 | Jun 25, 2007 | Jun 25, 2007 | Davis Bros. Oil Producers, Inc. | Johnson-Gail #1 | 7,650 | 24130749 |
| 639103Amendment | Jun 25, 2007 | Jun 25, 2007 | Davis Bros. Oil Producers, Inc. | Johnson-Gail #1 | 7,650 | 24130749 |
| 640668 | Jun 22, 2007 | Jun 22, 2007 | Texakota, Inc. | Adams Ranch #3 | 13,200 | 24130750 |
| 638773 | May 17, 2007 | May 17, 2007 | Century Exploration Houston, Inc | Adams Ranch #2 | 11,532 | 24130748 |
| 638161 | May 9, 2007 | May 9, 2007 | Texakota, Inc. | Adams Ranch #2 | 12,000 | 24130747 |
| 638161Amendment | May 9, 2007 | May 9, 2007 | Texakota, Inc. | Adams Ranch #2 | 12,000 | 24130747 |
| 638161Amendment | May 9, 2007 | May 9, 2007 | Texakota, Inc. | Adams Ranch #2 | 12,000 | 24130747 |
| 638160 | May 9, 2007 | May 9, 2007 | Texakota, Inc. | Adams Ranch #1 | 12,000 | 24130746 |
| 638160Amendment | May 9, 2007 | May 9, 2007 | Texakota, Inc. | Adams Ranch #1 | 12,000 | 24130746 |
| 638160Amendment | May 9, 2007 | May 9, 2007 | Texakota, Inc. | Adams Ranch #1 | 12,000 | 24130746 |
| 638159 | May 9, 2007 | May 9, 2007 | Texakota, Inc. | Williams, G. L. #1 | 12,000 | 24130745 |
| 638159Amendment | May 9, 2007 | May 9, 2007 | Texakota, Inc. | Williams, G. L. #1 | 12,000 | 24130745 |
| 635322 | May 9, 2007 | May 9, 2007 | Anadarko E&P Company LP | Black Stone Minerals a-34 Unit 3 #1H | 14,200 | 24130740 |
| 635322Amendment | May 9, 2007 | May 9, 2007 | Anadarko E&P Company LP | Black Stone Minerals a-34 Unit 3 #1H | 14,200 | 24130740 |
| 637005 | Apr 18, 2007 | Apr 18, 2007 | Anadarko E&P Company LP | Anadarko Fee SWD #1 | 7,000 | 24130744 |
| 634485 | Apr 4, 2007 | Apr 4, 2007 | Anadarko E&P Company LP | BP America a-995 Unit #1H | 14,000 | 24130741 |
| 636053 | Apr 3, 2007 | Apr 3, 2007 | Century Exploration Houston, Inc | BP America 'A-493' #1 | 12,342 | 24130742 |
| 634683 | Mar 13, 2007 | Mar 13, 2007 | Century Exploration Houston, Inc | Mil-Vid Prop., Inc. A-364 #1 | 12,150 | 24130739 |
| 630806 | Dec 20, 2006 | Dec 20, 2006 | Century Exploration Houston, Inc | Adams, F. P. Jr., et Al #1 | 9,800 | 24130738 |
| 630806Amendment | Dec 20, 2006 | Dec 20, 2006 | Century Exploration Houston, Inc | Adams, F. P. Jr., et Al #1 | 11,000 | 24130738 |
| 626965 | Dec 6, 2006 | Dec 6, 2006 | Anadarko E&P Company LP | Golbert a-11 Unit #1H | 13,700 | 24130733 |
| 626965Amendment | Dec 6, 2006 | Dec 6, 2006 | Anadarko E&P Company LP | Gobert a-11 Unit #1H | 13,700 | 24130733 |
| 626965Amendment | Dec 6, 2006 | Dec 6, 2006 | Anadarko E&P Company LP | Gobert a-11 Unit #1H | 13,700 | 24130733 |
| 629346 | Nov 21, 2006 | Nov 21, 2006 | Peoples Energy Prod.-TX, L.P. | BP America A-904 #1 | 4,700 | 24130737 |
| 629346Amendment | Nov 21, 2006 | Nov 21, 2006 | Peoples Energy Prod.-TX, L.P. | BP America A-904 #1 | 4,700 | 24130737 |
| 627539 | Oct 23, 2006 | Oct 23, 2006 | Peoples Energy Prod.-TX, L.P. | BP America A-472 #1 | 4,800 | 24130736 |
| 627539Amendment | Oct 23, 2006 | Oct 23, 2006 | Peoples Energy Prod.-TX, L.P. | BP America A-472 #1 | 4,800 | 24130736 |
| 627505 | Oct 23, 2006 | Oct 23, 2006 | Peoples Energy Prod.-TX, L.P. | BP America A-508 #1 | 4,800 | 24130735 |
| 627505Amendment | Oct 23, 2006 | Oct 23, 2006 | Peoples Energy Prod.-TX, L.P. | BP America A-508 #1 | 4,800 | 24130735 |
| 627774 | Oct 19, 2006 | Oct 19, 2006 | Anadarko E&P Company LP | Arco Fee A-259 #1REH | 12,200 | 24130578 |
| 627496 | Oct 13, 2006 | Oct 13, 2006 | Peoples Energy Prod.-TX, L.P. | BP America A-286 #1 | 4,800 | 24130734 |
| 627496Amendment | Oct 13, 2006 | Oct 13, 2006 | Peoples Energy Prod.-TX, L.P. | BP America A-286 #1 | 4,800 | 24130734 |
| 626058 | Oct 12, 2006 | Oct 12, 2006 | Jay Management Company, LLC | Arco-Hughes #5 | 3,500 | 24130731 |
| 626058Amendment | Oct 12, 2006 | Oct 12, 2006 | Jay Management Company, LLC | Arco-Hughes #5 | 3,500 | 24130731 |
| 626728 | Sep 28, 2006 | Sep 28, 2006 | Union Gas Operating Company | BP Fee A-6 #2 | 13,000 | 24130732 |
| 625878 | Sep 13, 2006 | Sep 13, 2006 | Davis Bros. Oil Producers, Inc. | Johnson-Elene (2-S) #1 | 11,164 | 24130701 |
| 625396 | Sep 7, 2006 | Sep 7, 2006 | Davis Bros. Oil Producers, Inc. | Vastar-Johnson #1 | 6,780 | 24130690 |
| 625396Amendment | Sep 7, 2006 | Sep 7, 2006 | Davis Bros. Oil Producers, Inc. | Vastar-Johnson #1 | 9,300 | 24130690 |
| 623589 | Aug 23, 2006 | Aug 23, 2006 | Davis Bros. Oil Producers, Inc. | Salsbury #1 | 11,200 | 24130729 |
| 623589Amendment | Aug 23, 2006 | Aug 23, 2006 | Davis Bros. Oil Producers, Inc. | Salsbury #1 | 10,385 | 24130729 |
| 624525 | Aug 17, 2006 | Aug 17, 2006 | Davis Bros. Oil Producers, Inc. | Whitman-Johnson #1 | 7,600 | 24130730 |
| 621355 | Aug 15, 2006 | Aug 15, 2006 | Anadarko E&P Company LP | Black Stone Isaacs A-316 #1 | 16,500 | 24130728 |
| 621355Amendment | Aug 15, 2006 | Aug 15, 2006 | Anadarko E&P Company LP | Black Stone Isaacs A-316 #1 | 18,000 | 24130728 |
| 621355Amendment | Aug 15, 2006 | Aug 15, 2006 | Anadarko E&P Company LP | Black Stone Isaacs A-316 #1H | 18,000 | 24130728 |
| 623329 | Jul 27, 2006 | Jul 27, 2006 | Anadarko E&P Company LP | Martindale-McGraw A-33 #1REH | 12,200 | 24130637 |
| 621148 | Jun 16, 2006 | Jun 16, 2006 | Union Gas Operating Company | BP Kirby A-901 #1 | 4,500 | 24130727 |
| 620725 | Jun 12, 2006 | Jun 12, 2006 | Union Gas Operating Company | Adj Minerals #1 | 4,000 | 24130726 |
| 620724 | Jun 12, 2006 | Jun 12, 2006 | Union Gas Operating Company | BP Castillo A-6 #1 | 3,600 | 24130725 |
| 619070 | May 11, 2006 | May 11, 2006 | Union Gas Operating Company | Adj Minerals #2 | 4,000 | 24130724 |
| 617859 | Apr 19, 2006 | Apr 19, 2006 | AC Exploration, LLC | Hankamer Foundation #1 | 8,500 | 24130723 |
| 614977 | Feb 28, 2006 | Feb 28, 2006 | AC Exploration, LLC | BP America Fee #1 | 8,500 | 24130722 |
| 613348 | Feb 6, 2006 | Feb 6, 2006 | Anadarko E&P Company LP | Williams, B. P. A-539 #2 | 15,000 | 24130721 |
| 604622 | Aug 11, 2005 | Aug 11, 2005 | Davis Bros. Oil Producers, Inc. | Johnson - Lance #1 | 8,200 | 24130720 |
| 604622Amendment | Aug 11, 2005 | Aug 11, 2005 | Davis Bros. Oil Producers, Inc. | Johnson - Lance #1 | 8,200 | 24130720 |
| 603227 | Jul 11, 2005 | Jul 11, 2005 | C & E Operating, Inc. | B.P. America A #2 | 8,900 | 24130719 |
| 602382 | Jun 22, 2005 | Jun 22, 2005 | AC Exploration, LLC | Richardson Heirs #1 | 7,800 | 24130718 |
| 602051 | Jun 15, 2005 | Jun 15, 2005 | Anadarko E&P Company LP | Arco Fee A-924 #1REH | 12,500 | 24130605 |
| 600169 | May 5, 2005 | May 5, 2005 | C & E Operating, Inc. | Cain #1 | 8,900 | 24130717 |
| 560546 | Apr 19, 2005 | Apr 19, 2005 | Anadarko E&P Company LP | Black Stone Minerals Unit A-17 #1 | 20,000 | 24130716 |
| 560587 | Apr 15, 2005 | Apr 15, 2005 | Union Gas Operating Company | BP Fee A-6 #1 | 15,000 | 24130715 |
| 560587Amendment | Apr 15, 2005 | Apr 15, 2005 | Union Gas Operating Company | BP Fee A-6 #1 | 15,000 | 24130715 |
| 558247 | Feb 25, 2005 | Feb 25, 2005 | Texakota, Inc. | Mixson Land Company #1 | 12,000 | 24130714 |
| 558247Amendment | Feb 25, 2005 | Feb 25, 2005 | Texakota Inc. | Mixson Land Company #1 | 10,500 | 24130714 |
| 558247Amendment | Feb 25, 2005 | Feb 25, 2005 | Texakota, Inc. | Mixson Land Company #1 | 12,000 | 24130714 |
| 556901 | Jan 31, 2005 | Jan 31, 2005 | Trek Resources, Inc. | BP A-584 #1 | 4,600 | 24130713 |
| 555445 | Dec 29, 2004 | Dec 29, 2004 | Union Gas Operating Company | BP A-284 #1 | 12,000 | 24130712 |
| 550098 | Aug 25, 2004 | Aug 25, 2004 | Kerr-McGee Oil & Gas Onshore LLC | Hilgemeier Family Trust Gas UT #1 | 8,900 | 24130711 |
| 550098Amendment | Aug 25, 2004 | Aug 25, 2004 | Kerr-McGee Oil & Gas Onshore LLC | Hilgemeier Family Trust Gas Unit #1 | 7,751 | 24130711 |
| 549961 | Aug 23, 2004 | Aug 23, 2004 | Kerr-McGee Oil & Gas Onshore LLC | BP America A-477 #1 | 5,600 | 24130710 |
| 549961Amendment | Aug 23, 2004 | Aug 23, 2004 | Kerr-McGee Oil & Gas Onshore LLC | BP America A-477 #1 | 5,600 | 24130710 |
| 549425 | Aug 12, 2004 | Aug 12, 2004 | Jay Management Company, LLC | Arco Hughes #4 | 3,350 | 24130709 |
| 548910 | Jul 29, 2004 | Jul 29, 2004 | Davis Southern Operating Co LLC | P.C. Bernal Unit #1 | 9,350 | 24130708 |
| 543827 | May 20, 2004 | May 20, 2004 | Anadarko E&P Company LP | Jordan Unit A-321 #1REH | 12,500 | 24130645 |
| 544824 | Apr 28, 2004 | Apr 28, 2004 | Indexgeo & Associates, Inc. | Teel, et Al #2 | 4,200 | 24130707 |
| 544824Amendment | Apr 28, 2004 | Apr 28, 2004 | Indexgeo & Associates, Inc. | Teel, et Al #2 | 4,200 | 24130707 |
| 543870 | Mar 31, 2004 | Mar 31, 2004 | C & E Operating, Inc. | BP America A #1 | 9,500 | 24130706 |
| 536495 | Mar 4, 2004 | Mar 4, 2004 | Anadarko E&P Company LP | Martindale-McGraw Unit A-33 #1REH | 12,200 | 24130637 |
| 539819 | Dec 22, 2003 | Dec 22, 2003 | Indexgeo & Associates, Inc. | Teel #1 | 4,200 | 24130705 |
| 537991 | Oct 29, 2003 | Oct 29, 2003 | Anadarko E&P Company LP | Flaming Gorge #1 | 16,000 | 24130704 |
| 537222 | Oct 6, 2003 | Oct 6, 2003 | Peoples Energy Prod.-TX, L.P. | BP American A-392 #1 | 9,800 | 24130703 |
| 536157 | Sep 10, 2003 | Sep 10, 2003 | Valence Operating Company | Kirby Forest Industries #1 | 7,300 | 24130399 |
| 535014 | Aug 7, 2003 | Aug 7, 2003 | Anadarko E&P Company LP | Arco Fee Unit A-924 #1H | 12,700 | 24130605 |
| 534253 | Jul 16, 2003 | Jul 16, 2003 | Blue Ridge Energy, Inc. | Allen, B. P. #1 | 10,800 | 24130702 |
| 532881 | Jun 10, 2003 | Jun 10, 2003 | Anadarko E&P Company LP | Arco Fee Unit A-252 #1REH | 12,000 | 24130601 |
| 532687 | Jun 3, 2003 | Jun 3, 2003 | Davis Bros. Oil Producers, Inc. | Johnson-Elene (2-S) #1 | 11,110 | 24130701 |
| 532687Amendment | Jun 3, 2003 | Jun 3, 2003 | Davis Bros. Oil Producers, Inc. | Johnson-Elene (2-S) #1 | 11,164 | 24130701 |
| 532586 | May 30, 2003 | May 30, 2003 | Blue Ridge Group, Inc. | Brown, B. P. #1 | 10,800 | 24130700 |
| 532360 | May 27, 2003 | May 27, 2003 | Davis Bros. Oil Producers, Inc. | Cowden-Johnson (1-N) #1 | 9,750 | 24130699 |
| 532360Amendment | May 27, 2003 | May 27, 2003 | Davis Bros. Oil Producers, Inc. | Cowden-Johnson (1-N) #1 | 9,398 | 24130699 |
| 531862 | May 14, 2003 | May 14, 2003 | Anadarko E&P Company LP | Blackstone Minerals Unit A-342 #1REH | 12,500 | 24130625 |
| 531862Amendment | May 14, 2003 | May 14, 2003 | Anadarko E&P Company LP | Blackstone Minerals Unit A-342 #1REH | 12,500 | 24130625 |
| 529338 | May 5, 2003 | May 5, 2003 | Anadarko E&P Company LP | McGraw Unit A-531 #1H | 14,000 | 24130697 |
| 530028 | Apr 2, 2003 | Apr 2, 2003 | Anadarko E&P Company LP | Temple Industries Unit #3HH | 12,000 | 24130572 |
| 529470 | Mar 11, 2003 | Mar 11, 2003 | Anadarko E&P Company LP | B. F. Jones Unit A-22 #2H | 13,600 | 24130698 |
| 528636 | Feb 19, 2003 | Feb 19, 2003 | Anadarko E&P Company LP | Blackstone Minerals Unit A-982 #2H | 13,500 | 24130696 |
| 528636Amendment | Feb 19, 2003 | Feb 19, 2003 | Anadarko E&P Company LP | Blackstone Minerals Unit A-982 #2H | 13,500 | 24130696 |
| 528636Amendment | Feb 19, 2003 | Feb 19, 2003 | Anadarko E&P Company LP | Blackstone Minerals Unit A-982 #2H | 13,500 | 24130696 |