| 602933 | Jul 5, 2005 | Jul 5, 2005 | Anderson Oil Ltd | Heller, Walter E., et Al #1 | 6,950 | 02500068 |
| 602831 | Jun 30, 2005 | Jun 30, 2005 | Charro Operating, L.L.C. | Lazy F #9 | 5,500 | 02533349 |
| 602549 | Jun 27, 2005 | Jun 27, 2005 | Petrohawk Operating Company | Heard, C.E. "B" #19 | 5,000 | 02533348 |
| 602549Amendment | Jun 27, 2005 | Jun 27, 2005 | Petrohawk Operating Company | Heard, C. E. "B" #19 | 5,020 | 02533348 |
| 602486 | Jun 23, 2005 | Jun 23, 2005 | Tidal Petroleum, Inc. | Grissom #3 | 10,500 | 02533347 |
| 602245 | Jun 20, 2005 | Jun 20, 2005 | Pioneer Natural Res. USA, Inc. | Schroeder GU #4H | 17,000 | 02533346 |
| 602245Amendment | Jun 20, 2005 | Jun 20, 2005 | Pioneer Natural Res. USA, Inc. | Schroeder GU #4H | 17,000 | 02533346 |
| 601893 | Jun 16, 2005 | Jun 16, 2005 | Pioneer Natural Res. USA, Inc. | Tomasek GU #8H | 17,000 | 02533345 |
| 601708 | Jun 8, 2005 | Jun 8, 2005 | Salida Exploration, LLC | Thomson-Barrow #3 | 5,500 | 02533343 |
| 601475 | Jun 1, 2005 | Jun 1, 2005 | Tidal Petroleum, Inc. | Grissom #2 | 10,500 | 02533342 |
| 601072 | May 23, 2005 | May 23, 2005 | Rincon Petroleum Corporation | J.C. Byles Unit #3 | 10,900 | 02533341 |
| 600807 | May 17, 2005 | May 17, 2005 | Dominion Oklahoma Texas E&P, Inc | Dominion Fee #2 | 12,000 | 02533340 |
| 600807Amendment | May 17, 2005 | May 17, 2005 | Dominion Oklahoma Texas E&P, Inc | Dominion Fee #2 | 12,000 | 02533340 |
| 600658 | May 16, 2005 | May 16, 2005 | Tidal Petroleum, Inc. | Tuleta Gas Unit #1 | 10,500 | 02533339 |
| 600467 | May 11, 2005 | May 11, 2005 | Pioneer Natural Res. USA, Inc. | Turner GU #11H | 16,500 | 02533338 |
| 600432 | May 10, 2005 | May 10, 2005 | Pioneer Natural Res. USA, Inc. | Turner GU #10H | 16,500 | 02533337 |
| 600266 | May 10, 2005 | May 10, 2005 | Pioneer Natural Res. USA, Inc. | Mansker Ranch GU #3H | 17,000 | 02533336 |
| 600098 | May 3, 2005 | May 3, 2005 | Anderson Oil Ltd | Eberstadt #5 | 5,900 | 02533334 |
| 600094 | May 3, 2005 | May 3, 2005 | Welder Exploration & Prod., Inc. | Traylor #1 | 7,000 | 02533335 |
| 561210 | Apr 28, 2005 | Apr 28, 2005 | Wofford, C. J. | South Texas Childrens Home #4 | 4,100 | 02533333 |
| 561065 | Apr 26, 2005 | Apr 26, 2005 | Enco Exploration Company | Collier #5 | 5,500 | 02533332 |
| 545576Amendment | Apr 26, 2005 | Apr 26, 2005 | Devon Energy Production Co, L.P. | Ray #108 | 9,900 | 02533222 |
| 560992 | Apr 22, 2005 | Apr 22, 2005 | Magnum Engineering Company | Algea Gas Unit #3 | 10,600 | 02532776 |
| 560992Amendment | Apr 22, 2005 | Apr 22, 2005 | Magnum Engineering Company | Algea Gas Unit #3 | 10,600 | 02532776 |
| 560813 | Apr 20, 2005 | Apr 20, 2005 | Hughes, Dan A. Company | Borroum #3 | 12,500 | 02533330 |
| 560539 | Apr 15, 2005 | Apr 15, 2005 | Halex Oil Corporation | McFall-Kerby #1 | 7,120 | 02532096 |
| 560484 | Apr 15, 2005 | Apr 15, 2005 | Pioneer Natural Res. USA, Inc. | Gordon Gas Unit #8H | 17,000 | 02533331 |
| 559952 | Apr 15, 2005 | Apr 15, 2005 | Staples, James W. Prod. Co. | Davis, Nellie S., et Al #1 | 4,300 | 02533173 |
| 560349 | Apr 13, 2005 | Apr 13, 2005 | Pioneer Natural Res. USA, Inc. | Turner Gas Unit #9H | 17,000 | 02533329 |
| 559976 | Apr 6, 2005 | Apr 6, 2005 | Pioneer Natural Res. USA, Inc. | O'Neal Gas Unit #11H | 16,200 | 02533328 |
| 559714 | Mar 30, 2005 | Mar 30, 2005 | Tidal Petroleum, Inc. | Grissom #1 | 10,500 | 02533327 |
| 559714Amendment | Mar 30, 2005 | Mar 30, 2005 | Tidal Petroleum, Inc. | Grissom #1 | 10,500 | 02533327 |
| 559233 | Mar 23, 2005 | Mar 23, 2005 | San Isidro Development Co, L. C. | Dirks-Hatch #1 | 4,100 | 02533326 |
| 559088 | Mar 18, 2005 | Mar 18, 2005 | Enco Exploration Company | Collier #T 2 | 3,853 | 02502746 |
| 558915 | Mar 17, 2005 | Mar 17, 2005 | Enco Exploration Company | Collier #4 | 5,500 | 02533324 |
| 559040 | Mar 15, 2005 | Mar 15, 2005 | Sanchez Oil & Gas Corporation | Mutchler Unit #1 | 14,500 | 02533325 |
| 558712 | Mar 8, 2005 | Mar 8, 2005 | Hughes, Dan A. Company | Strauch #1 | 13,000 | 02533323 |
| 558491 | Mar 7, 2005 | Mar 7, 2005 | West Tuleta Operating Corp. | Wtu Robinson #5 | 9,000 | 02533322 |
| 558431 | Mar 2, 2005 | Mar 2, 2005 | Hollimon Oil Corporation | Edler, J. B. #25 | 5,700 | 02533321 |
| 558047 | Feb 24, 2005 | Feb 24, 2005 | Staples, James W. | Moore, Lon S #1 | 3,710 | 02531593 |
| 557749 | Feb 17, 2005 | Feb 17, 2005 | Pioneer Natural Res. USA, Inc. | O'Neal Gas Unit #8H | 17,000 | 02533197 |
| 557749Amendment | Feb 17, 2005 | Feb 17, 2005 | Pioneer Natural Res. USA, Inc. | O'Neal Gas Unit #8H | 17,000 | 02533197 |
| 557738 | Feb 16, 2005 | Feb 16, 2005 | Pioneer Natural Res. USA, Inc. | Leppard GU #2H | 16,800 | 02533320 |
| 557634 | Feb 14, 2005 | Feb 14, 2005 | Morris, W. Dale Inc. | Zuniga Gas Unit #1H | 13,500 | 02533319 |
| 557634Amendment | Feb 14, 2005 | Feb 14, 2005 | Morris, W. Dale Inc. | Zuniga Gas Unit #1H | 16,000 | 02533319 |
| 557329 | Feb 7, 2005 | Feb 7, 2005 | Hughes, Dan A. Company | Riley #1 | 13,000 | 02533318 |
| 556948 | Feb 1, 2005 | Feb 1, 2005 | Pioneer Natural Res. USA, Inc. | Bues GU #12H | 16,800 | 02533317 |
| 557020 | Jan 31, 2005 | Jan 31, 2005 | Erskine Energy, LLC | Barrow #1 | 17,000 | 02533316 |
| 557020Amendment | Jan 31, 2005 | Jan 31, 2005 | Erskine Energy, LLC | Barrow #1 | 17,000 | 02533316 |
| 556822 | Jan 31, 2005 | Jan 31, 2005 | Inland Ocean, Inc. | Dirks-Withers #1 | 2,320 | 02532297 |
| 556897 | Jan 27, 2005 | Jan 27, 2005 | Double Play Oil & Gas, Inc | Huffman #1 | 3,499 | 02533315 |
| 555900 | Jan 27, 2005 | Jan 27, 2005 | Staples, James W. | Stoltzfus Estate #2 | 3,216 | 02530357 |
| 556608 | Jan 26, 2005 | Jan 26, 2005 | Inland Ocean, Inc. | Dirks #2 | 3,600 | 02533312 |
| 556731 | Jan 25, 2005 | Jan 25, 2005 | Proton Energy, L.L.C. | Heard, C.E. "B" #20 | 5,000 | 02533313 |
| 556730 | Jan 25, 2005 | Jan 25, 2005 | Proton Energy, L.L.C. | Heard, C. E. "B' #21 | 5,000 | 02533314 |
| 556730Amendment | Jan 25, 2005 | Jan 25, 2005 | Petrohawk Operating Company | Heard, C. E. "B' #21 | 5,000 | 02533314 |
| 555094 | Dec 27, 2004 | Dec 27, 2004 | Salida Exploration, LLC | Thomson-Barrow Corp. #1 | 6,200 | 02533310 |
| 555094Amendment | Dec 27, 2004 | Dec 27, 2004 | Salida Exploration, LLC | Thomson-Barrow Corp. #1 | 6,200 | 02533310 |
| 555113 | Dec 22, 2004 | Dec 22, 2004 | West Tuleta Operating Corp. | Dah Hall #1 | 9,630 | 02533259 |
| 554506 | Dec 10, 2004 | Dec 10, 2004 | Enco Exploration Company | Collier #3 | 10,500 | 02533309 |
| 554412 | Dec 6, 2004 | Dec 6, 2004 | Kaler Energy Corp | Carpenter #1 | 10,000 | 02533308 |
| 553992 | Nov 22, 2004 | Nov 22, 2004 | Wofford, C. J. | Sparkman Unit #3 | 4,100 | 02533307 |
| 553963 | Nov 22, 2004 | Nov 22, 2004 | Anderson Oil Ltd | Ingram #1 | 3,700 | 02533306 |
| 553436 | Nov 9, 2004 | Nov 9, 2004 | Hughes, Dan A. Company | Eberstadt #2ST | 10,500 | 02533261 |
| 553182 | Nov 3, 2004 | Nov 3, 2004 | Strand Energy, L.C. | Lunday #1 | 3,300 | 02533305 |
| 552651 | Oct 21, 2004 | Oct 21, 2004 | Hughes, Dan A. Company | Helm-Arburn Unit #1 | 13,000 | 02533304 |
| 551502 | Oct 21, 2004 | Oct 21, 2004 | Enco Exploration Company | Long "Y" #11 | 5,500 | 02533297 |
| 552345 | Oct 15, 2004 | Oct 15, 2004 | Welder Exploration & Prod., Inc. | Welder, R J #1C | 7,000 | 02533303 |
| 552135 | Oct 14, 2004 | Oct 14, 2004 | Enco Exploration Company | Collier #2 | 5,000 | 02533302 |
| 551875 | Oct 7, 2004 | Oct 7, 2004 | Devon Energy Production Co, L.P. | Npu (Ray 106) #41 | 11,600 | 02533239 |
| 551993 | Oct 6, 2004 | Oct 6, 2004 | Kaler Energy Corp | Holzmark #A 1 | 9,200 | 02533301 |
| 551953 | Oct 6, 2004 | Oct 6, 2004 | Anderson Oil Ltd | Eberstadt #4 | 6,800 | 02533300 |
| 551900 | Oct 5, 2004 | Oct 5, 2004 | Proton Energy, L.L.C. | Heard, C.E. "B" #17 | 3,700 | 02532325 |
| 551898 | Oct 5, 2004 | Oct 5, 2004 | Welder Exploration & Prod., Inc. | Sugarek #1 | 4,600 | 02533299 |
| 551636 | Sep 29, 2004 | Sep 29, 2004 | Dominion Oklahoma Texas E&P, Inc | Dominion Fee #1 | 12,500 | 02533298 |
| 551410 | Sep 24, 2004 | Sep 24, 2004 | Pioneer Natural Res. USA, Inc. | Schroeder G. U. #3H | 17,000 | 02533296 |
| 551425 | Sep 23, 2004 | Sep 23, 2004 | Aurora Resources Corporation | Brinkooeter, H C #2 | 7,561 | 02500632 |
| 551340 | Sep 22, 2004 | Sep 22, 2004 | Pioneer Natural Res. USA, Inc. | Winnie Madge Going Gas Unit #2H | 17,000 | 02533295 |
| 551226 | Sep 20, 2004 | Sep 20, 2004 | Pioneer Natural Res. USA, Inc. | Hoyt Gentry Gas Unit #1H | 16,500 | 02533294 |
| 550776 | Sep 15, 2004 | Sep 15, 2004 | Republic Resources, LLC. | Staples, J., Jr. #3 | 4,500 | 02533070 |
| 550973 | Sep 14, 2004 | Sep 14, 2004 | Rincon Petroleum Corporation | J C Byles Unit #2 | 11,000 | 02533293 |
| 550973Amendment | Sep 14, 2004 | Sep 14, 2004 | Rincon Petroleum Corporation | J. C. Byles Unit #2 | 11,000 | 02533293 |
| 550770 | Sep 13, 2004 | Sep 13, 2004 | Enco Exploration Company | Collier #1 | 5,000 | 02533292 |
| 550562 | Sep 8, 2004 | Sep 8, 2004 | Pioneer Natural Res. USA, Inc. | G. W. Currer #2 | 9,000 | 02533291 |
| 550391 | Sep 1, 2004 | Sep 1, 2004 | Hughes, Dan A. Company | Milster Ranch #1 | 12,000 | 02533290 |
| 550390 | Sep 1, 2004 | Sep 1, 2004 | Hughes, Dan A. Company | Luker #1 | 12,000 | 02533289 |
| 550223 | Sep 1, 2004 | Sep 1, 2004 | Hyquest Energy, Inc. | Hanus #1 | 4,600 | 02533288 |
| 549584 | Aug 20, 2004 | Aug 20, 2004 | Welder Exploration & Prod., Inc. | Welder, R. J. "A" #1A | 4,600 | 02533286 |
| 549583 | Aug 19, 2004 | Aug 19, 2004 | Welder Exploration & Prod., Inc. | Welder, R. J. "B" #2 B | 4,600 | 02533285 |
| 549696 | Aug 17, 2004 | Aug 17, 2004 | Prime Operating Company | Chandler Gas Unit #1 | 8,650 | 02532922 |
| 549231 | Aug 12, 2004 | Aug 12, 2004 | Welder Exploration & Prod., Inc. | Welder, R. J. #3B | 4,600 | 02533283 |
| 549257 | Aug 6, 2004 | Aug 6, 2004 | Devon Energy Production Co, L.P. | BU Tom Slick #3 | 12,000 | 02533284 |
| 549087 | Aug 3, 2004 | Aug 3, 2004 | Hughes, Dan A. Company | Weathersbee, Julia #1 | 16,000 | 02533282 |
| 549087Amendment | Aug 3, 2004 | Aug 3, 2004 | Hughes, Dan A. Company | Weathersbee, Julia #1 | 17,000 | 02533282 |
| 549087Amendment | Aug 3, 2004 | Aug 3, 2004 | Hughes, Dan A. Company | Weathersbee, Julia #1 | 17,000 | 02533282 |
| 548635 | Jul 26, 2004 | Jul 26, 2004 | Pioneer Natural Res. USA, Inc. | Mansker Ranch GU #2H | 17,000 | 02533281 |
| 548635Amendment | Jul 26, 2004 | Jul 26, 2004 | Pioneer Natural Res. USA, Inc. | Mansker Ranch GU #2 | 17,000 | 02533281 |
| 548397 | Jul 19, 2004 | Jul 19, 2004 | Pioneer Natural Res. USA, Inc. | Schroeder Gas Unit #2H | 17,300 | 02533280 |
| 557724 | Jul 16, 2004 | Jul 16, 2004 | Gulfstar Properties, Inc. | Spindletop Gas Unit #1 | 10,000 | 02533148 |
| 548254 | Jul 15, 2004 | Jul 15, 2004 | Welder Exploration & Prod., Inc. | Peterson #1 | 4,600 | 02533279 |