| 560883 | Apr 21, 2005 | Apr 21, 2005 | Vintage Petroleum, Inc. | West Ranch -A- #362 | 6,353 | 23902709 |
| 560879 | Apr 21, 2005 | Apr 21, 2005 | Vintage Petroleum, Inc. | West Ranch -A- #433 | 5,850 | 23902780 |
| 560877 | Apr 21, 2005 | Apr 21, 2005 | Vintage Petroleum, Inc. | Gordin Estate #31 | 7,130 | 23932284 |
| 560603 | Apr 21, 2005 | Apr 21, 2005 | Petro Vest, Inc. | Hess #3 | 6,669 | 23931821 |
| 560696 | Apr 19, 2005 | Apr 19, 2005 | Jamex, Inc. | Goff #A 1 | 13,200 | 23933309 |
| 560696Amendment | Apr 19, 2005 | Apr 19, 2005 | Jamex, Inc. | Goff #A 1 | 13,200 | 23933309 |
| 560696Amendment | Apr 19, 2005 | Apr 19, 2005 | Jamex, Inc. | Goff #A 1 | 13,200 | 23933309 |
| 560500 | Apr 15, 2005 | Apr 15, 2005 | Sue-Ann Operating, L.C. | Branch, Maggie #29 | 5,545 | 23903606 |
| 560343 | Apr 14, 2005 | Apr 14, 2005 | Encon Services, Inc. | A. E. Westhoff #14 | 7,000 | 23933308 |
| 560337 | Apr 13, 2005 | Apr 13, 2005 | Encon Services, Inc. | A. E. Westhoff #13 | 7,000 | 23933307 |
| 560209 | Apr 11, 2005 | Apr 11, 2005 | Sue-Ann Operating, L.C. | Kallus #1 | 7,362 | 23933166 |
| 559963 | Apr 6, 2005 | Apr 6, 2005 | Encon Services, Inc. | Hasdorff "B" #1 | 7,000 | 23903466 |
| 559963Amendment | Apr 6, 2005 | Apr 6, 2005 | Encon Services, Inc. | Hasdorff "A" #2 | 7,000 | 23903466 |
| 559996 | Apr 5, 2005 | Apr 5, 2005 | Brigham Oil & Gas, L.P. | State Tract 259 #1 | 10,000 | 23933306 |
| 559897 | Apr 4, 2005 | Apr 4, 2005 | Sue-Ann Operating, L.C. | Strauss #25 | 5,980 | 23933178 |
| 559848 | Apr 1, 2005 | Apr 1, 2005 | Texas American Resources Company | Shook #1 | 5,500 | 23933305 |
| 559848Amendment | Apr 1, 2005 | Apr 1, 2005 | Texas American Resources Company | Shook #1 | 5,500 | 23933305 |
| 559562 | Mar 29, 2005 | Mar 29, 2005 | Jamex, Inc. | Goff #2 | 13,200 | 23933304 |
| 559562Amendment | Mar 29, 2005 | Mar 29, 2005 | Jamex, Inc. | Goff #2 | 13,200 | 23933304 |
| 559560 | Mar 29, 2005 | Mar 29, 2005 | Jamex, Inc. | Goff #1 | 13,200 | 23933303 |
| 559560Amendment | Mar 29, 2005 | Mar 29, 2005 | Jamex, Inc. | Goff #1 | 13,200 | 23933303 |
| 559136 | Mar 28, 2005 | Mar 28, 2005 | Santos USA Corp. | Koop et al Gas Unit #1 | 16,500 | 23933301 |
| 559432 | Mar 23, 2005 | Mar 23, 2005 | Vintage Petroleum, Inc. | West Ranch -A- #403 | 5,040 | 23902750 |
| 559377 | Mar 23, 2005 | Mar 23, 2005 | Jamex, Inc. | Kubenka #1 | 13,200 | 23933302 |
| 558637 | Mar 21, 2005 | Mar 21, 2005 | Encon Services, Inc. | Westhoff, A. E. #10 | 7,000 | 23933295 |
| 558963 | Mar 14, 2005 | Mar 14, 2005 | Vintage Petroleum, Inc. | West Ranch A #35 | 6,320 | 23902390 |
| 558833 | Mar 14, 2005 | Mar 14, 2005 | Samson Lone Star LP | Lee Brothers #1 | 4,325 | 23933283 |
| 558799 | Mar 14, 2005 | Mar 14, 2005 | Encon Services, Inc. | Hasdorff "A" #3 | 7,000 | 23933298 |
| 558792 | Mar 14, 2005 | Mar 14, 2005 | Encon Services, Inc. | Westhoff, A. E. #12 | 7,000 | 23933297 |
| 558892 | Mar 11, 2005 | Mar 11, 2005 | Brigham Oil & Gas, L.P. | Appling #1 | 13,700 | 23933300 |
| 558873 | Mar 11, 2005 | Mar 11, 2005 | Signal Oil and Gas Company | Watson #1 | 4,000 | 23933299 |
| 557685 | Mar 10, 2005 | Mar 10, 2005 | Cibolo Energy Operating, Inc | Schuech Unit 6 #1 | 5,800 | 23930155 |
| 558361 | Mar 7, 2005 | Mar 7, 2005 | Cibolo Energy Operating, Inc | Schuech, Irma "B" #1 | 6,850 | 23931930 |
| 558361Amendment | Mar 7, 2005 | Mar 7, 2005 | Cibolo Energy Operating, Inc | Schuech, Irma "B" #1 | 8,257 | 23931930 |
| 558355 | Mar 4, 2005 | Mar 4, 2005 | Brigham Oil & Gas, L.P. | Sartwelle #3 | 9,000 | 23933286 |
| 558386 | Mar 1, 2005 | Mar 1, 2005 | Hilcorp Energy Company | K.R. Miller Unit No. 1 #1ST | 8,850 | 23932683 |
| 558386Amendment | Mar 1, 2005 | Mar 1, 2005 | Hilcorp Energy Company | K.R. Miller Unit No. 1 #1ST | 9,500 | 23932683 |
| 558237 | Feb 25, 2005 | Feb 25, 2005 | Zinke & Trumbo, Inc. | Wearden #1 | 13,500 | 23933294 |
| 557972 | Feb 18, 2005 | Feb 18, 2005 | Ramsey Production Company, LLC | Samantha #1 | 5,000 | 23933293 |
| 556355 | Feb 4, 2005 | Feb 4, 2005 | Fredco | Wearden Corporation #1 | 9,500 | 23932453 |
| 556353 | Jan 27, 2005 | Jan 27, 2005 | Fredco | Harrison, Elsie #1ST | 8,000 | 23932385 |
| 555402 | Dec 28, 2004 | Dec 28, 2004 | Tri-C Resources, Inc. | Webernick #1 | 13,000 | 23933292 |
| 555074 | Dec 20, 2004 | Dec 20, 2004 | Kaler Energy Corp | Raybon #1 | 3,600 | 23933291 |
| 554749 | Dec 13, 2004 | Dec 13, 2004 | Zachry Exploration, Ltd. | Wilbeck #1 | 3,350 | 23933290 |
| 553347 | Dec 13, 2004 | Dec 13, 2004 | Miller, W. C. Operating Company | Fowler, W. B. #6 | 4,812 | 23931316 |
| 554676 | Dec 10, 2004 | Dec 10, 2004 | Brayton Operating Corp. | Drushel #1 R | 3,800 | 23933289 |
| 554245 | Dec 1, 2004 | Dec 1, 2004 | Sue-Ann Operating, L.C. | Ross, Hanna #6 | 7,650 | 23930419 |
| 553351 | Nov 9, 2004 | Nov 9, 2004 | Geodominion Petroleum | Simons-Anders Unit #1 | 3,500 | 23933288 |
| 553260 | Nov 9, 2004 | Nov 9, 2004 | Brayton Operating Corp. | Robinson #2 | 7,300 | 23933272 |
| 552521 | Nov 4, 2004 | Nov 4, 2004 | Cypress Production, Inc. | Hahn #1 | 4,100 | 23933287 |
| 552956 | Oct 28, 2004 | Oct 28, 2004 | Sabinal Resources, Inc. | Kuretsch, Louis #5 | 6,573 | 23932106 |
| 552476 | Oct 19, 2004 | Oct 19, 2004 | Brigham Oil & Gas, L.P. | Sartwelle #3 | 13,700 | 23933286 |
| 552378 | Oct 19, 2004 | Oct 19, 2004 | Sue-Ann Operating, L.C. | Strauss #25 | 5,980 | 23933178 |
| 552377 | Oct 18, 2004 | Oct 18, 2004 | Sue-Ann Operating, L.C. | Kallus #1 | 7,362 | 23933166 |
| 552339 | Oct 15, 2004 | Oct 15, 2004 | Chaparral Energy, L.L.C. | Campbell #1 | 4,100 | 23932740 |
| 552326 | Oct 15, 2004 | Oct 15, 2004 | Chesapeake Operating, Inc. | Dugger #1 | 15,000 | 23933285 |
| 552037 | Oct 11, 2004 | Oct 11, 2004 | Sundown Energy, Inc. | Hunt #1 | 2,900 | 23933284 |
| 552037Amendment | Oct 11, 2004 | Oct 11, 2004 | Sundown Energy LP | Hunt #1 | 3,700 | 23933284 |
| 551939 | Oct 7, 2004 | Oct 7, 2004 | Indexgeo & Associates, Inc. | Clark Gas Unit #01 | 4,500 | 23933282 |
| 551991 | Oct 6, 2004 | Oct 6, 2004 | Samson Lone Star LP | Lee Brothers #1 | 5,500 | 23933283 |
| 551991Amendment | Oct 6, 2004 | Oct 6, 2004 | Samson Lone Star LP | Lee Brothers #1 | 5,500 | 23933283 |
| 551970 | Oct 6, 2004 | Oct 6, 2004 | Vintage Petroleum, Inc. | West Ranch A #391 | 7,050 | 23902738 |
| 551465 | Sep 28, 2004 | Sep 28, 2004 | Cox & Perkins Exploration, Inc. | Robert-McHenry #1 | 11,500 | 23933281 |
| 549799 | Sep 22, 2004 | Sep 22, 2004 | Hilcorp Energy Company | Tittizer, Louis Gas Unit No. 1 #2 | 9,100 | 23932094 |
| 551241 | Sep 21, 2004 | Sep 21, 2004 | Allegro Investments, Inc. | Pruitt #1 | 6,700 | 23933052 |
| 551201 | Sep 20, 2004 | Sep 20, 2004 | Brayton Operating Corp. | Lon Drushel #1 | 3,800 | 23933280 |
| 551127 | Sep 20, 2004 | Sep 20, 2004 | B.P. Productions Inc. | Fenner #1 | 4,400 | 23933279 |
| 551127Amendment | Sep 20, 2004 | Sep 20, 2004 | B.P. Productions Inc. | Fenner #1 | 4,400 | 23933279 |
| 551118 | Sep 16, 2004 | Sep 16, 2004 | Magnum Producing, LP | Premier-Appling #1 | 9,321 | 23933249 |
| 550721 | Sep 14, 2004 | Sep 14, 2004 | Acock/Anaqua Operating Co., LP | Brooking, G.T. #32 | 7,450 | 23930363 |
| 550714 | Sep 14, 2004 | Sep 14, 2004 | Acock/Anaqua Operating Co., LP | Brooking, G.T. #39 | 9,150 | 23930771 |
| 550663 | Sep 8, 2004 | Sep 8, 2004 | Colo Exploration Company, Inc. | Goff "B" #2 | 4,700 | 23933277 |
| 550662 | Sep 8, 2004 | Sep 8, 2004 | Colo Exploration Company, Inc. | Goff "A" #1 | 4,700 | 23933278 |
| 549900 | Aug 20, 2004 | Aug 20, 2004 | Vintage Petroleum, Inc. | West Ranch -A- #504 | 6,350 | 23932013 |
| 549746 | Aug 18, 2004 | Aug 18, 2004 | Vintage Petroleum, Inc. | West Ranch -A- #484 | 5,060 | 23931189 |
| 549671 | Aug 17, 2004 | Aug 17, 2004 | Colo Exploration Company, Inc. | Jacobs #1 | 4,900 | 23933276 |
| 549671Amendment | Aug 17, 2004 | Aug 17, 2004 | Signal Oil and Gas Company | Jacobs #1 | 4,900 | 23933276 |
| 549505 | Aug 17, 2004 | Aug 17, 2004 | Cibolo Energy Operating, Inc | Bennett, J. M. "R" #2 | 7,125 | 23903066 |
| 548932 | Aug 3, 2004 | Aug 3, 2004 | Brayton Operating Corp. | Friedrichs #1 | 3,500 | 23933275 |
| 548928 | Aug 3, 2004 | Aug 3, 2004 | Brayton Operating Corp. | Gasch #1 | 5,500 | 23933274 |
| 548924 | Aug 3, 2004 | Aug 3, 2004 | Brayton Operating Corp. | Robinson #2 | 7,300 | 23933272 |
| 548947 | Jul 30, 2004 | Jul 30, 2004 | Gasper Rice Resources, Ltd. | Adamson #1 | 5,000 | 23933273 |
| 548946 | Jul 30, 2004 | Jul 30, 2004 | Brayton Operating Corp. | Simons #1 | 3,200 | 23933271 |
| 548817 | Jul 28, 2004 | Jul 28, 2004 | Colo Exploration Company, Inc. | Dana #1 | 2,900 | 23933270 |
| 548817Amendment | Jul 28, 2004 | Jul 28, 2004 | Signal Oil and Gas Company | Dana #1 | 3,200 | 23933270 |
| 548817Amendment | Jul 28, 2004 | Jul 28, 2004 | Signal Oil and Gas Company | Dana #1 | 4,458 | 23933270 |
| 548451 | Jul 21, 2004 | Jul 21, 2004 | Gasper Rice Resources, Ltd. | Fohr #1 | 5,000 | 23933269 |
| 548451Amendment | Jul 21, 2004 | Jul 21, 2004 | Gasper Rice Resources, Ltd. | Fohr #1 | 5,500 | 23933269 |
| 548424 | Jul 20, 2004 | Jul 20, 2004 | Sue-Ann Operating, L.C. | Maurbro Field / A. Gayle #912 | 7,000 | 23932996 |
| 548123 | Jul 16, 2004 | Jul 16, 2004 | Cibolo Energy Operating, Inc | Schuech, Irma "B" #8 | 6,200 | 23932142 |
| 547829 | Jul 16, 2004 | Jul 16, 2004 | White Oak Operating Company LLC | Babb, T. J. #1 | 7,014 | 23930201 |
| 546752 | Jul 16, 2004 | Jul 16, 2004 | Kaiser-Francis Oil Company | Wilkinson, Agnes #1 | 8,700 | 23932772 |
| 548252 | Jul 15, 2004 | Jul 15, 2004 | Cimarron Engineering Corp. | Budd #1 | 3,600 | 23933268 |
| 548252Amendment | Jul 15, 2004 | Jul 15, 2004 | Cimarron Engineering Corp. | Budd #1 | 3,600 | 23933268 |
| 548152 | Jul 13, 2004 | Jul 13, 2004 | Colo Exploration Company, Inc. | Stoudt #1 | 4,600 | 23933267 |
| 547965 | Jul 8, 2004 | Jul 8, 2004 | Vintage Petroleum, Inc. | West Ranch -A- #540 HH | 5,202 | 23933148 |
| 547902 | Jul 7, 2004 | Jul 7, 2004 | Vintage Petroleum, Inc. | West Ranch -A- #346 | 5,070 | 23902693 |
| 547885 | Jul 7, 2004 | Jul 7, 2004 | Colo Exploration Company, Inc. | Kneblick #1 | 4,700 | 23933266 |
| 547885Amendment | Jul 7, 2004 | Jul 7, 2004 | Colo Exploration Company, Inc. | Kneblick #1 | 4,700 | 23933266 |
| 547458 | Jun 28, 2004 | Jun 28, 2004 | Vintage Petroleum, Inc. | West Ranch -A #384 | 5,210 | 23902731 |