| 611116 | Dec 15, 2005 | Dec 15, 2005 | Chesapeake Operating, Inc. | Ramon "B" #150535445 | 12,000 |
| 611025 | Dec 14, 2005 | Dec 14, 2005 | Wagner Oil Company | Slator Ranch #3150535444 | 12,000 |
| 611025Amendment | Dec 14, 2005 | Dec 14, 2005 | Wagner Oil Company | Slator Ranch #3150535444 | 12,000 |
| 611025Amendment | Dec 14, 2005 | Dec 14, 2005 | Wagner Oil Company | Slator Ranch #3150535444 | 12,000 |
| 610842 | Dec 14, 2005 | Dec 14, 2005 | Houston Exploration Company, The | Dominguez #550535443 | 9,700 |
| 610766 | Dec 12, 2005 | Dec 12, 2005 | Conocophillips Company | Snowmass Inc. #150535442 | 13,400 |
| 609253 | Dec 12, 2005 | Dec 12, 2005 | Conocophillips Company | Laurel Mineral Estate #1450535417 | 12,900 |
| 609090 | Dec 12, 2005 | Dec 12, 2005 | Conocophillips Company | Laurel Mineral Estate #1350535416 | 12,400 |
| 610782 | Dec 9, 2005 | Dec 9, 2005 | Laredo Energy | Dodier "B" #250535441 | 13,000 |
| 610781 | Dec 9, 2005 | Dec 9, 2005 | Laredo Energy | Lozano #150535440 | 10,000 |
| 610712 | Dec 8, 2005 | Dec 8, 2005 | Chesapeake Operating, Inc. | Benavides, Alejo #150535439 | 12,000 |
| 610493 | Dec 7, 2005 | Dec 7, 2005 | Houston Exploration Company, The | Munoz-Gutierrez Gas Unit #350535437 | 14,800 |
| 610491 | Dec 7, 2005 | Dec 7, 2005 | Houston Exploration Company, The | Munoz-Gutierrez Gas Unit #250535436 | 12,100 |
| 610276 | Dec 2, 2005 | Dec 2, 2005 | Cody Energy LLC | Palmyra #1950535435 | 11,200 |
| 610208 | Dec 2, 2005 | Dec 2, 2005 | Evans, S. Lavon Jr. Oper. Co. | Gonzalez #150535433 | 12,500 |
| 610208Amendment | Dec 2, 2005 | Dec 2, 2005 | Evans, S. Lavon Jr. Oper. Co. | Willars #150535433 | 12,500 |
| 610278 | Nov 30, 2005 | Nov 30, 2005 | Cody Energy LLC | Palmyra #2050535434 | 11,200 |
| 610196 | Nov 29, 2005 | Nov 29, 2005 | Chesapeake Operating, Inc. | Las Avispas #150535432 | 14,000 |
| 610152 | Nov 29, 2005 | Nov 29, 2005 | Ricochet Energy, Inc. | 3J Zapata/Meza Gas Unit #450535431 | 9,000 |
| 608672 | Nov 29, 2005 | Nov 29, 2005 | Houston Exploration Company, The | Garza, L. "2" #950535408 | 9,746 |
| 610097 | Nov 28, 2005 | Nov 28, 2005 | Houston Exploration Company, The | Rathmell Land and Cattle Co. #250535430 | 9,500 |
| 610093 | Nov 28, 2005 | Nov 28, 2005 | Newfield Exploration Company | Salinas #250535429 | 13,000 |
| 610092 | Nov 28, 2005 | Nov 28, 2005 | Newfield Exploration Company | Ramirez #150535428 | 7,000 |
| 610092Amendment | Nov 28, 2005 | Nov 28, 2005 | Newfield Exploration Company | Ramirez #150535428 | 7,000 |
| 609998 | Nov 23, 2005 | Nov 23, 2005 | EOG Resources, Inc. | BMT/K & H "AA" #350535427 | 12,600 |
| 609689 | Nov 22, 2005 | Nov 22, 2005 | Houston Exploration Company, The | Haynes #2750535424 | 12,300 |
| 609771 | Nov 18, 2005 | Nov 18, 2005 | Chesapeake Operating, Inc. | Laurel, O. M. Estate #950535426 | 14,000 |
| 609764 | Nov 18, 2005 | Nov 18, 2005 | Wagner & Brown, Ltd. | Worley #450535425 | 18,000 |
| 609543 | Nov 18, 2005 | Nov 18, 2005 | Devon Energy Production Co, L.P. | Thomasma, Ray J. #350530300 | 3,807 |
| 609698 | Nov 17, 2005 | Nov 17, 2005 | Laredo Energy | Dodier "A" #150535423 | 13,000 |
| 609672 | Nov 17, 2005 | Nov 17, 2005 | EOG Resources, Inc. | Slator Ranch #P 150535421 | 12,000 |
| 609539 | Nov 17, 2005 | Nov 17, 2005 | Peoples Energy Prod.-TX, L.P. | Vela, Carmen "C" #350535420 | 12,000 |
| 608353 | Nov 17, 2005 | Nov 17, 2005 | Conocophillips Company | Cassin, Edward #350535403 | 12,850 |
| 608353Amendment | Nov 17, 2005 | Nov 17, 2005 | Conocophillips Company | Cassin, Edward #350535403 | 12,850 |
| 609593 | Nov 16, 2005 | Nov 16, 2005 | Laredo Energy | G.O. Vela et al "A" #150535419 | 12,000 |
| 608184 | Nov 15, 2005 | Nov 15, 2005 | Houston Exploration Company, The | Alfonso #3850535401 | 10,320 |
| 608179 | Nov 15, 2005 | Nov 15, 2005 | Houston Exploration Company, The | Alfonso #3750535400 | 10,320 |
| 609362 | Nov 14, 2005 | Nov 14, 2005 | Devon Energy Production Co, L.P. | Haynes #2850534820 | 14,355 |
| 609269 | Nov 14, 2005 | Nov 14, 2005 | Conocophillips Company | Edward Cassin #750535418 | 13,000 |
| 609269Amendment | Nov 14, 2005 | Nov 14, 2005 | Conocophillips Company | Cassin, Edward #750535418 | 13,000 |
| 608941 | Nov 8, 2005 | Nov 8, 2005 | Houston Exploration Company, The | Bustamante Gas Unit 1 #1050535415 | 12,300 |
| 608864 | Nov 7, 2005 | Nov 7, 2005 | Newfield Exploration Company | Varal Ranches #350535414 | 13,000 |
| 608836 | Nov 7, 2005 | Nov 7, 2005 | Conocophillips Company | Laurel Mineral Estate #1250535413 | 12,600 |
| 608836Amendment | Nov 7, 2005 | Nov 7, 2005 | Conocophillips Company | Laurel Mineral Estate #1250535413 | 12,600 |
| 608884 | Nov 3, 2005 | Nov 3, 2005 | Ricochet Energy, Inc. | Flores #350535411 | 11,500 |
| 608860 | Nov 3, 2005 | Nov 3, 2005 | EOG Resources, Inc. | Slator Ranch #S 150535295 | 10,850 |
| 608856 | Nov 3, 2005 | Nov 3, 2005 | Houston Exploration Company, The | Dominguez #450535412 | 9,700 |
| 608820 | Nov 3, 2005 | Nov 3, 2005 | Devon Energy Production Co, L.P. | Haynes #3750535167 | 11,402 |
| 608845 | Nov 2, 2005 | Nov 2, 2005 | EOG Resources, Inc. | Slator Ranch #S 250535410 | 12,000 |
| 608839 | Nov 2, 2005 | Nov 2, 2005 | Cody Energy LLC | Palmyra #1850535409 | 11,500 |
| 608691 | Oct 31, 2005 | Oct 31, 2005 | EOG Resources, Inc. | Gutierrez, Higinio Jr #B 150535407 | 9,500 |
| 608583 | Oct 28, 2005 | Oct 28, 2005 | Devon Energy Production Co, L.P. | Haynes #3850535199 | 11,300 |
| 608457 | Oct 27, 2005 | Oct 27, 2005 | Aruba Petroleum, Inc. | Gutierrez #150535404 | 11,600 |
| 608457Amendment | Oct 27, 2005 | Oct 27, 2005 | Aruba Petroleum, Inc. | Gutierrez #150535404 | 11,600 |
| 608486 | Oct 26, 2005 | Oct 26, 2005 | Chesapeake Operating, Inc. | Volpe #150535406 | 14,000 |
| 608478 | Oct 26, 2005 | Oct 26, 2005 | Chesapeake Operating, Inc. | Leo Cuellar Gas Unit #150535405 | 13,000 |
| 607163 | Oct 25, 2005 | Oct 25, 2005 | Houston Exploration Company, The | Maria Cuellar #1750535380 | 10,300 |
| 607146 | Oct 25, 2005 | Oct 25, 2005 | Houston Exploration Company, The | Asche #10950535379 | 13,000 |
| 608305 | Oct 21, 2005 | Oct 21, 2005 | Killam Oil Co., Ltd. | Bernardo Bustamante G.U. #550535402 | 15,000 |
| 608155 | Oct 20, 2005 | Oct 20, 2005 | Peoples Energy Prod.-TX, L.P. | Jennings, J.D. #48150535399 | 4,000 |
| 608108 | Oct 20, 2005 | Oct 20, 2005 | North Central Oil Corp. | Haynes, L. #15650535398 | 10,500 |
| 608104 | Oct 19, 2005 | Oct 19, 2005 | North Central Oil Corp. | Haynes, L. #15750535397 | 11,000 |
| 608104Amendment | Oct 19, 2005 | Oct 19, 2005 | Pogo Producing Company LLC | Haynes, L. #15750535397 | 11,000 |
| 607847 | Oct 19, 2005 | Oct 19, 2005 | Devon Energy Production Co, L.P. | Jennings #7650534456 | 13,117 |
| 607962 | Oct 17, 2005 | Oct 17, 2005 | Peoples Energy Prod.-TX, L.P. | Jennings, J. D. #48450535396 | 5,800 |
| 607961 | Oct 17, 2005 | Oct 17, 2005 | Elliott Oil & Gas Operating Co. | Frost National Bank #250535393 | 13,750 |
| 607960 | Oct 17, 2005 | Oct 17, 2005 | Peoples Energy Prod.-TX, L.P. | Jennings, J. D. #48350535394 | 5,800 |
| 607946 | Oct 17, 2005 | Oct 17, 2005 | Enterprise Products Operating LP | Rectifier: ZA-6 #6ZA50535395 | 330 |
| 607852 | Oct 17, 2005 | Oct 17, 2005 | Houston Exploration Company, The | Rathmell Land and Cattle Co. #150535391 | 9,500 |
| 607953 | Oct 14, 2005 | Oct 14, 2005 | Chesapeake Operating, Inc. | RMT "C" #350535392 | 13,000 |
| 607870 | Oct 14, 2005 | Oct 14, 2005 | Chesapeake Operating, Inc. | Juan Ramirez Gas Unit #150535390 | 13,500 |
| 607730 | Oct 14, 2005 | Oct 14, 2005 | Peoples Energy Prod.-TX, L.P. | Smith, A.H. #850535389 | 11,000 |
| 607730Amendment | Oct 14, 2005 | Oct 14, 2005 | Peoples Energy Prod.-TX, L.P. | Smith, A.H. #850535389 | 11,000 |
| 607781 | Oct 12, 2005 | Oct 12, 2005 | Laredo Energy | Gutierrez et Al #250535388 | 10,000 |
| 607781Amendment | Oct 12, 2005 | Oct 12, 2005 | Laredo Energy | Gutierrez et Al #250535388 | 11,000 |
| 607750 | Oct 12, 2005 | Oct 12, 2005 | Laredo Energy | El Clareno #250535387 | 10,500 |
| 607750Amendment | Oct 12, 2005 | Oct 12, 2005 | Laredo Energy | El Clareno #250535387 | 10,500 |
| 607716 | Oct 12, 2005 | Oct 12, 2005 | Chesapeake Operating, Inc. | Hinojosa #150535386 | 15,000 |
| 607533 | Oct 7, 2005 | Oct 7, 2005 | Cody Energy LLC | Palmyra #1750535385 | 11,000 |
| 607427 | Oct 7, 2005 | Oct 7, 2005 | Houston Exploration Company, The | A. Garza #1850535384 | 10,800 |
| 607453 | Oct 6, 2005 | Oct 6, 2005 | Shell Western E&P | Muzza, G. P. #1250535383 | 15,300 |
| 607451 | Oct 6, 2005 | Oct 6, 2005 | Newfield Exploration Company | Salinas #150535382 | 13,000 |
| 607433 | Oct 6, 2005 | Oct 6, 2005 | Chesapeake Operating, Inc. | Vielmann #350535381 | 13,000 |
| 607131 | Sep 29, 2005 | Sep 29, 2005 | Laredo Energy | Gutierrez et Al #150535376 | 10,000 |
| 607121 | Sep 29, 2005 | Sep 29, 2005 | Conocophillips Company | McAskill #3150535378 | 12,400 |
| 607103 | Sep 29, 2005 | Sep 29, 2005 | Houston Exploration Company, The | Trevino #2250535377 | 10,500 |
| 607103Amendment | Sep 29, 2005 | Sep 29, 2005 | Houston Exploration Company, The | Trevino #2250535377 | 10,500 |
| 606013 | Sep 29, 2005 | Sep 29, 2005 | Conocophillips Company | Laurel Mineral Estate #1150535360 | 12,900 |
| 606013Amendment | Sep 29, 2005 | Sep 29, 2005 | Conocophillips Company | Laurel Mineral Estate #1150535360 | 12,900 |
| 607057 | Sep 28, 2005 | Sep 28, 2005 | Chesapeake Operating, Inc. | Jennings, Roy #850535223 | 15,000 |
| 607055 | Sep 28, 2005 | Sep 28, 2005 | Chesapeake Operating, Inc. | Jennings, Roy #750535140 | 15,000 |
| 607041 | Sep 28, 2005 | Sep 28, 2005 | Chesapeake Operating, Inc. | New Zapata East Gas Unit #550535375 | 13,000 |
| 607011 | Sep 27, 2005 | Sep 27, 2005 | Chesapeake Operating, Inc. | Gonzalez Gas Unit #150535373 | 12,000 |
| 607003 | Sep 27, 2005 | Sep 27, 2005 | Reichmann Petroleum Corp. | Martinez #250535374 | 10,500 |
| 606891 | Sep 23, 2005 | Sep 23, 2005 | Houston Exploration Company, The | Salinas, G. G. #150535372 | 9,500 |
| 606623 | Sep 22, 2005 | Sep 22, 2005 | Duke Energy Intrast. Network LLC | Mogotes Lateral #1FM50535371 | 270 |
| 606705 | Sep 21, 2005 | Sep 21, 2005 | EOG Resources, Inc. | Garza, L. #3750535370 | 12,100 |
| 606603 | Sep 21, 2005 | Sep 21, 2005 | Conocophillips Company | Bruni Ranch #10550535369 | 12,400 |
| 606607 | Sep 20, 2005 | Sep 20, 2005 | Ricochet Energy, Inc. | 3J Zapata/Meza Gas Unit #350535368 | 12,000 |
| 606554 | Sep 20, 2005 | Sep 20, 2005 | Conocophillips Company | Bruni Ranch #10650535367 | 12,000 |