| 615114 | Mar 2, 2006 | Mar 2, 2006 | Dominion Expl. & Prod., Inc. | Ramos, Felix #550535524 | 11,500 |
| 615061 | Mar 1, 2006 | Mar 1, 2006 | EOG Resources, Inc. | Slator Ranch "V" #150535523 | 12,000 |
| 615059 | Mar 1, 2006 | Mar 1, 2006 | EOG Resources, Inc. | BMT/K&H "AC" #250535522 | 12,000 |
| 615058 | Mar 1, 2006 | Mar 1, 2006 | EOG Resources, Inc. | Slator Ranch "V" #250535521 | 12,000 |
| 613641 | Mar 1, 2006 | Mar 1, 2006 | Houston Exploration Company, The | Garza, L. Estate #450535499 | 11,800 |
| 614698 | Feb 27, 2006 | Feb 27, 2006 | Devon Energy Production Co, L.P. | Haynes #3950535520 | 11,000 |
| 614507 | Feb 27, 2006 | Feb 27, 2006 | Conocophillips Company | Jennings Ranch D #2750535518 | 13,300 |
| 614506 | Feb 27, 2006 | Feb 27, 2006 | Conocophillips Company | Jennings Ranch D #2650535519 | 12,800 |
| 613303 | Feb 23, 2006 | Feb 23, 2006 | Houston Exploration Company, The | Munoz #1450535494 | 14,400 |
| 614640 | Feb 22, 2006 | Feb 22, 2006 | EOG Resources, Inc. | R. M. T. 38 #350535515 | 8,800 |
| 614639 | Feb 22, 2006 | Feb 22, 2006 | EOG Resources, Inc. | Ramirez, RP & RR #150535514 | 9,500 |
| 613240 | Feb 22, 2006 | Feb 22, 2006 | Houston Exploration Company, The | E. E. Gutierrez #850535492 | 14,500 |
| 614586 | Feb 21, 2006 | Feb 21, 2006 | Houston Exploration Company, The | L. Garza "B" 2 #B 750535513 | 12,000 |
| 614577 | Feb 21, 2006 | Feb 21, 2006 | Chesapeake Operating, Inc. | Laurel, O. M. Estate #1050535512 | 14,000 |
| 614546 | Feb 21, 2006 | Feb 21, 2006 | Laredo Energy | Benavides "A" #550535511 | 11,000 |
| 614546Amendment | Feb 21, 2006 | Feb 21, 2006 | Laredo Energy | Benavides "A" #550535511 | 12,000 |
| 614461 | Feb 17, 2006 | Feb 17, 2006 | Chesapeake Operating, Inc. | LFT #250535510 | 13,000 |
| 614456 | Feb 17, 2006 | Feb 17, 2006 | Chesapeake Operating, Inc. | RMT C #550535509 | 12,000 |
| 614401 | Feb 17, 2006 | Feb 17, 2006 | Chesapeake Operating, Inc. | Villarreal #750535508 | 13,000 |
| 612739 | Feb 17, 2006 | Feb 17, 2006 | Pogo Producing Company | Haynes, L. #15350535486 | 10,500 |
| 612739Amendment | Feb 17, 2006 | Feb 17, 2006 | Pogo Producing Company LLC | Haynes, L. #15350535486 | 10,500 |
| 614213 | Feb 15, 2006 | Feb 15, 2006 | Chesapeake Operating, Inc. | Guerra #150535507 | 15,000 |
| 614213Amendment | Feb 15, 2006 | Feb 15, 2006 | Chesapeake Operating, Inc. | Guerra #150535507 | 15,000 |
| 613771 | Feb 14, 2006 | Feb 14, 2006 | Conocophillips Company | Las Palomas #550535505 | 14,600 |
| 613964 | Feb 10, 2006 | Feb 10, 2006 | Peoples Energy Prod.-TX, L.P. | Jennings, J.D. #16450500884 | 3,005 |
| 613960 | Feb 10, 2006 | Feb 10, 2006 | Peoples Energy Prod.-TX, L.P. | Jennings, J.D. #2250503201 | 3,400 |
| 613912 | Feb 9, 2006 | Feb 9, 2006 | Peoples Energy Prod.-TX, L.P. | Jennings, J.D. #34550530099 | 4,500 |
| 613899 | Feb 9, 2006 | Feb 9, 2006 | Peoples Energy Prod.-TX, L.P. | Jennings, J.D. #5250531741 | 3,510 |
| 613899Amendment | Feb 9, 2006 | Feb 9, 2006 | Peoples Energy Prod.-TX, L.P. | Jennings, J. D. #5250531741 | 3,510 |
| 613815 | Feb 8, 2006 | Feb 8, 2006 | Reichmann Petroleum Corp. | Cuellar, J. E. NE #150535503 | 14,500 |
| 613815Amendment | Feb 8, 2006 | Feb 8, 2006 | Reichmann Petroleum Corp. | J.M. Cuellar NE #150535503 | 14,500 |
| 613465 | Feb 7, 2006 | Feb 7, 2006 | Conocophillips Company | McAskill TR5 #3450535502 | 12,500 |
| 613465Amendment | Feb 7, 2006 | Feb 7, 2006 | Conocophillips Company | McAskill TR5 #3450535502 | 12,500 |
| 613464 | Feb 7, 2006 | Feb 7, 2006 | Conocophillips Company | Bruni Ranch #10750535500 | 12,400 |
| 613464Amendment | Feb 7, 2006 | Feb 7, 2006 | Conocophillips Company | Bruni Ranch #10750535500 | 12,400 |
| 613624 | Feb 3, 2006 | Feb 3, 2006 | Chesapeake Operating, Inc. | Cuellar GU #250535498 | 13,000 |
| 613267 | Feb 3, 2006 | Feb 3, 2006 | Killam Oil Co., Ltd. | Bernardo Bustamante G. U. #450535049 | 8,700 |
| 613507 | Feb 2, 2006 | Feb 2, 2006 | Newfield Exploration Company | Lopez #450535497 | 13,000 |
| 613455 | Feb 2, 2006 | Feb 2, 2006 | Laredo Energy | Marshall #150535496 | 13,000 |
| 611790 | Feb 1, 2006 | Feb 1, 2006 | Houston Exploration Company, The | Flores, L. G. #4950535463 | 11,700 |
| 611789 | Feb 1, 2006 | Feb 1, 2006 | Houston Exploration Company, The | Gutierrez, E. E. #750535462 | 12,000 |
| 611758 | Feb 1, 2006 | Feb 1, 2006 | Houston Exploration Company, The | Irene #450535461 | 14,500 |
| 613327 | Jan 31, 2006 | Jan 31, 2006 | EOG Resources, Inc. | BMT/K&H #N 250535495 | 12,600 |
| 613327Amendment | Jan 31, 2006 | Jan 31, 2006 | EOG Resources, Inc. | BMT/K&H #N 250535495 | 12,000 |
| 613297 | Jan 31, 2006 | Jan 31, 2006 | Dominion Expl. & Prod., Inc. | Veleno Ranch #1ST50534764 | 10,500 |
| 613250 | Jan 30, 2006 | Jan 30, 2006 | Houston Exploration Company, The | Jacoba #950535493 | 14,500 |
| 613200 | Jan 27, 2006 | Jan 27, 2006 | Houston Exploration Company, The | E. E. Gutierrez #950535490 | 14,500 |
| 613197 | Jan 27, 2006 | Jan 27, 2006 | Houston Exploration Company, The | Munoz-Gutierrez Gas Unit #550535491 | 14,400 |
| 613192 | Jan 27, 2006 | Jan 27, 2006 | Houston Exploration Company, The | Munoz-Gutierrez Gas Unit #450535489 | 14,800 |
| 613056 | Jan 26, 2006 | Jan 26, 2006 | Chesapeake Operating, Inc. | RMT C #450535488 | 12,000 |
| 613055 | Jan 26, 2006 | Jan 26, 2006 | Chesapeake Operating, Inc. | Ramon #450535487 | 12,000 |
| 613055Amendment | Jan 26, 2006 | Jan 26, 2006 | Chesapeake Operating, Inc. | Ramon #450535487 | 12,000 |
| 612738 | Jan 24, 2006 | Jan 24, 2006 | Pogo Producing Company | Haynes, L. #15550535485 | 10,500 |
| 612763 | Jan 23, 2006 | Jan 23, 2006 | Houston Exploration Company, The | Irene #650535484 | 14,400 |
| 612763Amendment | Jan 23, 2006 | Jan 23, 2006 | Houston Exploration Company, The | Irene #650535484 | 14,400 |
| 612729 | Jan 20, 2006 | Jan 20, 2006 | Chesapeake Operating, Inc. | Erm #150535483 | 15,000 |
| 612729Amendment | Jan 20, 2006 | Jan 20, 2006 | Chesapeake Operating, Inc. | Erm #150535483 | 15,000 |
| 612001 | Jan 20, 2006 | Jan 20, 2006 | Dominion Expl. & Prod., Inc. | Baltazar Ramos #850535472 | 12,700 |
| 612585 | Jan 18, 2006 | Jan 18, 2006 | Laredo Energy | El Clareno #350535482 | 11,000 |
| 612540 | Jan 18, 2006 | Jan 18, 2006 | Houston Exploration Company, The | Irene #550535481 | 14,200 |
| 612259 | Jan 18, 2006 | Jan 18, 2006 | United Resources LP | Sergio Laurel #250535479 | 12,500 |
| 612259Amendment | Jan 18, 2006 | Jan 18, 2006 | United Resources LP | Laurel, Sergio #250535479 | 12,500 |
| 612477 | Jan 17, 2006 | Jan 17, 2006 | Chesapeake Operating, Inc. | Villarreal #650535480 | 13,000 |
| 612163 | Jan 17, 2006 | Jan 17, 2006 | Conocophillips Company | Villarreal #350535476 | 12,000 |
| 612163Amendment | Jan 17, 2006 | Jan 17, 2006 | Conocophillips Company | Villarreal #350535476 | 12,000 |
| 612366 | Jan 13, 2006 | Jan 13, 2006 | Peoples Energy Prod.-TX, L.P. | Jennings, J.D. #48550535477 | 5,800 |
| 612366Amendment | Jan 13, 2006 | Jan 13, 2006 | Peoples Energy Prod.-TX, L.P. | Jennings, J.D. #48550535477 | 6,600 |
| 612364 | Jan 13, 2006 | Jan 13, 2006 | Peoples Energy Prod.-TX, L.P. | Jennings, J.D. #48250535478 | 5,800 |
| 612364Amendment | Jan 13, 2006 | Jan 13, 2006 | Peoples Energy Prod.-TX, L.P. | Jennings, J.D. #482H50535478 | 5,800 |
| 612343 | Jan 12, 2006 | Jan 12, 2006 | Peoples Energy Prod.-TX, L.P. | Trevino "B" #550535475 | 11,300 |
| 612199 | Jan 12, 2006 | Jan 12, 2006 | Chesapeake Operating, Inc. | Vela Estate #2150535474 | 14,000 |
| 612199Amendment | Jan 12, 2006 | Jan 12, 2006 | Chesapeake Operating, Inc. | Vela Estate #2150535474 | 14,000 |
| 612199Amendment | Jan 12, 2006 | Jan 12, 2006 | Chesapeake Operating, Inc. | Vela Estate #2150535474 | 14,000 |
| 612105 | Jan 11, 2006 | Jan 11, 2006 | Newfield Exploration Company | Singer #150535473 | 15,000 |
| 612100 | Jan 11, 2006 | Jan 11, 2006 | Newfield Exploration Company | Lopez #350535471 | 13,000 |
| 611938 | Jan 11, 2006 | Jan 11, 2006 | Conocophillips Company | Ruben Flores Minerals, Ltd #350535469 | 11,800 |
| 611936 | Jan 11, 2006 | Jan 11, 2006 | Conocophillips Company | Ruben Flores Minerals, Ltd #250535468 | 11,800 |
| 611933 | Jan 11, 2006 | Jan 11, 2006 | Conocophillips Company | Ruben Flores Minerals, Ltd #150535467 | 11,600 |
| 612047 | Jan 6, 2006 | Jan 6, 2006 | Laredo Energy | Martinez-Uribe #150535470 | 10,000 |
| 612019 | Jan 6, 2006 | Jan 6, 2006 | Houston Exploration Company, The | Martinez-Ramirez Gas Unit #250535466 | 10,000 |
| 611850 | Jan 4, 2006 | Jan 4, 2006 | Chesapeake Operating, Inc. | El Refugio #250535464 | 14,000 |
| 611810 | Jan 3, 2006 | Jan 3, 2006 | Peoples Energy Prod.-TX, L.P. | Smith, A.H. #950535460 | 11,000 |
| 611762 | Dec 30, 2005 | Dec 30, 2005 | EOG Resources, Inc. | BMT/K&H "AC" #150535459 | 12,000 |
| 611762Amendment | Dec 30, 2005 | Dec 30, 2005 | EOG Resources, Inc. | BMT/K&H "AC" #150535459 | 12,000 |
| 611760 | Dec 30, 2005 | Dec 30, 2005 | Houston Exploration Company, The | A. Garza #2050535458 | 10,800 |
| 611759 | Dec 30, 2005 | Dec 30, 2005 | Houston Exploration Company, The | A. Garza #1950535457 | 10,800 |
| 611748 | Dec 30, 2005 | Dec 30, 2005 | Houston Exploration Company, The | El Refugio "AD" #450535456 | 13,500 |
| 611534 | Dec 30, 2005 | Dec 30, 2005 | Devon Energy Production Co, L.P. | Haynes #1050532418 | 14,500 |
| 611710 | Dec 29, 2005 | Dec 29, 2005 | Reichmann Petroleum Corp. | Uribe #150535455 | 14,000 |
| 611673 | Dec 28, 2005 | Dec 28, 2005 | Reichmann Petroleum Corp. | Resendez #250535454 | 13,200 |
| 611673Amendment | Dec 28, 2005 | Dec 28, 2005 | Reichmann Petroleum Corp. | Resendez #250535454 | 13,200 |
| 611544 | Dec 28, 2005 | Dec 28, 2005 | Wagner Oil Company | Slator Ranch #3250535453 | 11,000 |
| 611564 | Dec 27, 2005 | Dec 27, 2005 | Shell Western E&P | Zachry, H. B. Company #950535452 | 18,400 |
| 611550 | Dec 27, 2005 | Dec 27, 2005 | Chesapeake Operating, Inc. | Villarreal #550535451 | 13,000 |
| 611547 | Dec 27, 2005 | Dec 27, 2005 | Chesapeake Operating, Inc. | Volpe #250535450 | 14,000 |
| 611447 | Dec 22, 2005 | Dec 22, 2005 | Cody Energy LLC | Palmyra #2150535449 | 11,300 |
| 611429 | Dec 21, 2005 | Dec 21, 2005 | Wagner Oil Company | Martinez, Mercurio #150531350 | 11,577 |
| 611188 | Dec 20, 2005 | Dec 20, 2005 | Newfield Exploration Company | Volpe, Adan #150535448 | 13,000 |
| 611168 | Dec 16, 2005 | Dec 16, 2005 | Houston Exploration Company, The | M. Flores #1350535447 | 13,800 |
| 611152 | Dec 16, 2005 | Dec 16, 2005 | Conocophillips Company | McAskill #3350535446 | 12,500 |