| 641321 | Jul 9, 2007 | Jul 9, 2007 | Hamilton, J. R. | Kothman-Barnard #10 | 3,500 | 12733471 |
| 641319 | Jul 6, 2007 | Jul 6, 2007 | Hamilton, J. R. | Kothman-Barnard #9 | 3,500 | 12733470 |
| 640929 | Jun 28, 2007 | Jun 28, 2007 | Sage Energy Company | Allee #1HH | 6,500 | 12733469 |
| 640929Amendment | Jun 28, 2007 | Jun 28, 2007 | Sage Energy Company | Allee #1HH | 6,189 | 12733469 |
| 640929Amendment | Jun 28, 2007 | Jun 28, 2007 | Sage Energy Company | Allee #1HH | 6,189 | 12733469 |
| 640928 | Jun 28, 2007 | Jun 28, 2007 | Emerald Operating Company, Inc. | Kinnard #1REH | 7,500 | 12733028 |
| 640888 | Jun 28, 2007 | Jun 28, 2007 | Escondido Resources GP, LLC | Briscoe, Chip A #69 | 8,400 | 12733468 |
| 640887 | Jun 28, 2007 | Jun 28, 2007 | Escondido Resources GP, LLC | Briscoe, Dolph B #68 | 8,400 | 12733467 |
| 639264 | Jun 25, 2007 | Jun 25, 2007 | Enterprise Products Operating LP | Rectifier: HL-4 #R004HL | 375 | 12733465 |
| 640593 | Jun 21, 2007 | Jun 21, 2007 | Patterson Petroleum LP | Bowman #2H | 6,800 | 12733466 |
| 640593Amendment | Jun 21, 2007 | Jun 21, 2007 | Patterson Petroleum LLC | Bowman #2H | 6,800 | 12733466 |
| 640591 | Jun 13, 2007 | Jun 13, 2007 | Crimson Energy Partners, L.P. | Briscoe #28 | 6,000 | 12733464 |
| 640001 | Jun 11, 2007 | Jun 11, 2007 | Sage Energy Company | Bray #3HH | 5,300 | 12733463 |
| 640001Amendment | Jun 11, 2007 | Jun 11, 2007 | Sage Energy Company | Bray #3HH | 9,230 | 12733463 |
| 639389 | May 24, 2007 | May 24, 2007 | Crimson Energy Partners, L.P. | Briscoe #27 | 8,000 | 12733462 |
| 638844 | May 18, 2007 | May 18, 2007 | Crimson Energy Partners, L.P. | Beinhorn #2 | 7,000 | 12733461 |
| 638844Amendment | May 18, 2007 | May 18, 2007 | Crimson Energy Partners, L.P. | Beinhorn #2 | 8,000 | 12733461 |
| 638728 | May 17, 2007 | May 17, 2007 | Sage Energy Company | Bray #2 | 4,000 | 12733391 |
| 638473 | May 14, 2007 | May 14, 2007 | Anadarko E&P Company LP | San Pedro Ranch #2H | 13,000 | 12733460 |
| 638425 | May 12, 2007 | May 12, 2007 | Crimson Energy Partners, L.P. | Beinhorn #1 | 6,000 | 12733459 |
| 637772 | May 3, 2007 | May 3, 2007 | Exploration Company, The | Briscoe-McKnight #123 | 4,000 | 12733458 |
| 637772Amendment | May 3, 2007 | May 3, 2007 | Txco Resources Inc. | Briscoe-McKnight #123 | 4,000 | 12733458 |
| 637032 | Apr 17, 2007 | Apr 17, 2007 | Crimson Energy Partners, L.P. | Briscoe "C" #2 | 7,000 | 12733457 |
| 636682 | Apr 14, 2007 | Apr 14, 2007 | Crimson Energy Partners, L.P. | Briscoe "C" #1 | 7,000 | 12733456 |
| 636680 | Apr 14, 2007 | Apr 14, 2007 | Crimson Energy Partners, L.P. | Briscoe "B" #11 | 6,000 | 12733455 |
| 635584 | Mar 28, 2007 | Mar 28, 2007 | Sage Energy Company | Eldridge Unit #1HRH | 6,800 | 12732889 |
| 635584Amendment | Mar 28, 2007 | Mar 28, 2007 | Sage Energy Company | Eldridge Unit #1HRH | 6,750 | 12732889 |
| 634737 | Mar 15, 2007 | Mar 15, 2007 | Exploration Company, The | Pena Creek Unit #139 | 3,600 | 12733446 |
| 634736 | Mar 15, 2007 | Mar 15, 2007 | Exploration Company, The | Pena Creek Unit #98 | 3,600 | 12733452 |
| 634716 | Mar 15, 2007 | Mar 15, 2007 | Exploration Company, The | Pena Creek Unit #97 | 3,600 | 12733450 |
| 634714 | Mar 15, 2007 | Mar 15, 2007 | Exploration Company, The | Pena Creek Unit #138 | 3,600 | 12733451 |
| 634713 | Mar 15, 2007 | Mar 15, 2007 | Exploration Company, The | Pena Creek Unit #92 | 3,600 | 12733449 |
| 634710 | Mar 15, 2007 | Mar 15, 2007 | Exploration Company, The | Pena Creek Unit #94 | 3,600 | 12733448 |
| 634709 | Mar 15, 2007 | Mar 15, 2007 | Exploration Company, The | Pena Creek Unit #100 | 3,600 | 12733447 |
| 634709Amendment | Mar 15, 2007 | Mar 15, 2007 | Txco Resources Inc. | Pena Creek Unit #100 | 3,600 | 12733447 |
| 634708 | Mar 15, 2007 | Mar 15, 2007 | Exploration Company, The | Pena Creek Unit #140 | 3,600 | 12733445 |
| 634707 | Mar 15, 2007 | Mar 15, 2007 | Exploration Company, The | Pena Creek Unit #99 | 3,600 | 12733444 |
| 634706 | Mar 15, 2007 | Mar 15, 2007 | Exploration Company, The | Pena Creek Unit #141 | 3,600 | 12733443 |
| 634807 | Mar 14, 2007 | Mar 14, 2007 | Crimson Energy Partners, L.P. | Briscoe Stumberg #4 | 7,000 | 12733454 |
| 634807Amendment | Mar 14, 2007 | Mar 14, 2007 | Crimson Energy Partners, L.P. | Briscoe Stumberg #4 | 7,000 | 12733454 |
| 634807Amendment | Mar 14, 2007 | Mar 14, 2007 | Crimson Energy Partners, L.P. | Briscoe Stumberg #4 | 7,000 | 12733454 |
| 634802 | Mar 14, 2007 | Mar 14, 2007 | Crimson Energy Partners, L.P. | Briscoe #26 | 6,000 | 12733453 |
| 634563 | Mar 8, 2007 | Mar 8, 2007 | Crimson Energy Partners, L.P. | Briscoe "B" #10 | 6,000 | 12733442 |
| 634483 | Mar 8, 2007 | Mar 8, 2007 | Exploration Company, The | Latham-McKnight #118 | 7,000 | 12733441 |
| 634397 | Mar 8, 2007 | Mar 8, 2007 | Hamilton, J. R. | Kothman-Barnard #8 | 3,500 | 12733440 |
| 634155 | Mar 2, 2007 | Mar 2, 2007 | Escondido Resources GP, LLC | Briscoe, Dolph B #66 | 6,500 | 12733439 |
| 634154 | Mar 2, 2007 | Mar 2, 2007 | Escondido Resources GP, LLC | Briscoe, Dolph B #65 | 6,500 | 12733438 |
| 634153 | Mar 2, 2007 | Mar 2, 2007 | Escondido Resources GP, LLC | Briscoe, Dolph B #64 | 6,500 | 12733437 |
| 634148 | Mar 1, 2007 | Mar 1, 2007 | Crimson Energy Partners, L.P. | Briscoe Stumberg #3 | 7,000 | 12733435 |
| 634148Amendment | Mar 1, 2007 | Mar 1, 2007 | Crimson Energy Partners, L.P. | Briscoe Stumberg #3 | 7,000 | 12733435 |
| 634072 | Feb 28, 2007 | Feb 28, 2007 | Sage Energy Company | Whitecotton Unit #1H | 6,000 | 12733436 |
| 634072Amendment | Feb 28, 2007 | Feb 28, 2007 | Sage Energy Company | Whitecotton Unit #1H | 9,620 | 12733436 |
| 633789 | Feb 23, 2007 | Feb 23, 2007 | Patterson Petroleum LP | Bowman #1H | 7,000 | 12733434 |
| 633336 | Feb 13, 2007 | Feb 13, 2007 | Crimson Energy Partners, L.P. | Briscoe "B" #9 | 6,000 | 12733433 |
| 631272 | Jan 19, 2007 | Jan 19, 2007 | Crimson Energy Partners, L.P. | Briscoe Stumberg #2 | 7,000 | 12733432 |
| 631272Amendment | Jan 19, 2007 | Jan 19, 2007 | Crimson Energy Partners, L.P. | Briscoe Stumberg #2 | 7,000 | 12733432 |
| 631913 | Jan 18, 2007 | Jan 18, 2007 | Crimson Energy Partners, L.P. | Briscoe "B" #8 | 7,000 | 12733431 |
| 631911 | Jan 18, 2007 | Jan 18, 2007 | Crimson Energy Partners, L.P. | Briscoe "B" #7 | 7,000 | 12733430 |
| 631805 | Jan 12, 2007 | Jan 12, 2007 | Hurd Enterprises, Ltd. | Kone Estate "B" #2 | 6,000 | 12733429 |
| 631732 | Jan 11, 2007 | Jan 11, 2007 | Prime Operating Company | San Pedro Ranch #657 | 4,000 | 12732928 |
| 631720 | Jan 11, 2007 | Jan 11, 2007 | Crimson Energy Partners, L.P. | Briscoe #25 | 6,000 | 12733428 |
| 631672 | Jan 11, 2007 | Jan 11, 2007 | Sage Energy Company | Bowman, Ruth McLean #1REH | 7,000 | 12700308 |
| 631672Amendment | Jan 11, 2007 | Jan 11, 2007 | Sage Energy Company | Bowman, Ruth McLean #1REH | 7,000 | 12700308 |
| 631503 | Jan 9, 2007 | Jan 9, 2007 | Hamilton, J. R. | Kothman-Barnard #7 | 3,500 | 12733427 |
| 631253 | Jan 8, 2007 | Jan 8, 2007 | Crimson Energy Partners, L.P. | Briscoe Stumberg #1 | 7,000 | 12733426 |
| 631253Amendment | Jan 8, 2007 | Jan 8, 2007 | Crimson Energy Partners, L.P. | Briscoe Stumberg #1 | 7,000 | 12733426 |
| 631262 | Jan 3, 2007 | Jan 3, 2007 | Crimson Energy Partners, L.P. | Briscoe "B" #6 | 7,000 | 12733425 |
| 629781 | Dec 20, 2006 | Dec 20, 2006 | Texas American Resources Company | Boyd, G. G. #36H | 6,988 | 12732985 |
| 630691 | Dec 19, 2006 | Dec 19, 2006 | Crimson Energy Partners, L.P. | Briscoe "B" #5 | 8,000 | 12733424 |
| 630565 | Dec 15, 2006 | Dec 15, 2006 | Crimson Energy Partners, L.P. | Briscoe #24 | 6,000 | 12733423 |
| 630435 | Dec 13, 2006 | Dec 13, 2006 | Crimson Energy Partners, L.P. | Briscoe #23 | 6,000 | 12733422 |
| 630332 | Dec 12, 2006 | Dec 12, 2006 | Anadarko E&P Company LP | Briscoe Catarina West #1 | 13,500 | 12733421 |
| 630059 | Dec 6, 2006 | Dec 6, 2006 | Crimson Energy Partners, L.P. | Briscoe "B" #4 | 8,000 | 12733420 |
| 630002 | Dec 5, 2006 | Dec 5, 2006 | Escondido Resources GP, LLC | Dolph Briscoe "B" #62 | 9,000 | 12733419 |
| 629849 | Dec 1, 2006 | Dec 1, 2006 | Crimson Energy Partners, L.P. | Briscoe #22 | 6,000 | 12733418 |
| 629812 | Dec 1, 2006 | Dec 1, 2006 | Scully Energy Corporation | Winn #2 | 7,000 | 12733417 |
| 629692 | Nov 30, 2006 | Nov 30, 2006 | Texas American Resources Company | Big Wells Lo. San Miguel Unit #58 | 5,774 | 12732644 |
| 629246 | Nov 27, 2006 | Nov 27, 2006 | Presidio SWD, Inc. | Jung, Carmen #1 | 4,000 | 12733416 |
| 629368 | Nov 21, 2006 | Nov 21, 2006 | Crimson Energy Partners, L.P. | Briscoe "B" #3 | 8,000 | 12733414 |
| 629366 | Nov 21, 2006 | Nov 21, 2006 | Crimson Energy Partners, L.P. | Briscoe #21 | 6,000 | 12733415 |
| 628848 | Nov 10, 2006 | Nov 10, 2006 | Crimson Energy Partners, L.P. | Briscoe #20 | 6,000 | 12733413 |
| 628281 | Nov 8, 2006 | Nov 8, 2006 | Anadarko E&P Company LP | Briscoe Carla Ranch #1 | 12,800 | 12733412 |
| 628279 | Nov 8, 2006 | Nov 8, 2006 | Anadarko E&P Company LP | San Pedro Ranch #1 | 11,800 | 12733411 |
| 628326 | Oct 31, 2006 | Oct 31, 2006 | Ampak Oil Company | Ralph #1H | 9,000 | 12733033 |
| 628165 | Oct 31, 2006 | Oct 31, 2006 | Escondido Resources GP, LLC | Briscoe, Dolph E #60 | 6,000 | 12733410 |
| 628165Amendment | Oct 31, 2006 | Oct 31, 2006 | Swift Energy Operating, LLC | Briscoe, Dolph E #60 | 6,000 | 12733410 |
| 628162 | Oct 31, 2006 | Oct 31, 2006 | Escondido Resources GP, LLC | Briscoe, Dolph D #59 | 6,000 | 12733409 |
| 628162Amendment | Oct 31, 2006 | Oct 31, 2006 | Swift Energy Operating, LLC | Briscoe, Dolph D #59 | 6,000 | 12733409 |
| 628176 | Oct 27, 2006 | Oct 27, 2006 | Crimson Energy Partners, L.P. | Briscoe #19 | 6,000 | 12733408 |
| 627885 | Oct 27, 2006 | Oct 27, 2006 | Escondido Resources GP, LLC | Briscoe, Dolph B #56 | 6,000 | 12733403 |
| 627883 | Oct 27, 2006 | Oct 27, 2006 | Escondido Resources GP, LLC | Briscoe, Dolph C #58 | 6,000 | 12733404 |
| 627883Amendment | Oct 27, 2006 | Oct 27, 2006 | Swift Energy Operating, LLC | Briscoe, Dolph C #58 | 6,000 | 12733404 |
| 627882 | Oct 27, 2006 | Oct 27, 2006 | Escondido Resources GP, LLC | Briscoe, Dolph A #57 | 6,000 | 12733405 |
| 627882Amendment | Oct 27, 2006 | Oct 27, 2006 | Swift Energy Operating, LLC | Briscoe, Dolph A #57 | 6,000 | 12733405 |
| 627954 | Oct 26, 2006 | Oct 26, 2006 | Sage Energy Company | Espantosa Lake Unit #1H | 7,000 | 12733407 |
| 627954Amendment | Oct 26, 2006 | Oct 26, 2006 | Sage Energy Company | Espantosa Lake Unit #1H | 7,000 | 12733407 |
| 628004 | Oct 24, 2006 | Oct 24, 2006 | Escondido Resources GP, LLC | Dolph Briscoe "C" #61 | 9,000 | 12733406 |
| 627696 | Oct 24, 2006 | Oct 24, 2006 | CMR Energy, L.P. | Covert #108 | 4,000 | 12733287 |
| 627607 | Oct 17, 2006 | Oct 17, 2006 | Escondido Resources GP, LLC | Dolph Briscoe "B" #55 | 9,000 | 12733402 |
| 627606 | Oct 16, 2006 | Oct 16, 2006 | Escondido Resources GP, LLC | Briscoe, Dolph "B" #54 | 9,000 | 12733401 |