| 621260Amendment | Jun 20, 2006 | Jun 20, 2006 | Conocophillips Company | B.M.T. 471 #3 | 10,100 | 47939551 |
| 620814 | Jun 16, 2006 | Jun 16, 2006 | Barrett Brothers Oil & Gas, Inc. | Las Raices #2 | 7,200 | 47939548 |
| 620761 | Jun 15, 2006 | Jun 15, 2006 | Metano Energy, LP | Galvan #H 1 | 6,850 | 47939547 |
| 621001 | Jun 14, 2006 | Jun 14, 2006 | EOG Resources, Inc. | El Viejito "B" #3HH | 13,000 | 47939549 |
| 620780 | Jun 13, 2006 | Jun 13, 2006 | Lewis Petro Properties, Inc. | Booth, W.v.jr. 2292 H #14AH | 10,200 | 47939546 |
| 620689 | Jun 9, 2006 | Jun 9, 2006 | Chesapeake Operating, Inc. | El Gato #30 | 10,000 | 47939545 |
| 620602 | Jun 7, 2006 | Jun 7, 2006 | EOG Resources, Inc. | S Marshall State-Wells Fargo GU #4HH | 12,000 | 47939544 |
| 620535 | Jun 7, 2006 | Jun 7, 2006 | Virtex Petroleum Company, Inc. | Lundell Minerals #3 | 10,800 | 47939543 |
| 620132 | Jun 7, 2006 | Jun 7, 2006 | Welhausen Operating Company, LP | Beasley-Meador "B" #12 | 7,500 | 47939540 |
| 620128 | Jun 7, 2006 | Jun 7, 2006 | Welhausen Operating Company, LP | Beasley-Meador "A" #11 | 7,500 | 47939539 |
| 620276 | Jun 5, 2006 | Jun 5, 2006 | Conocophillips Company | Warren, W.K. #2 | 10,300 | 47939542 |
| 620153 | Jun 5, 2006 | Jun 5, 2006 | Devon Energy Production Co, L.P. | Bonebrake #8 | 9,500 | 47939541 |
| 620004 | Jun 2, 2006 | Jun 2, 2006 | Blackbrush O & G, Inc. | Petty Ranch #905 | 5,800 | 47939537 |
| 620004Amendment | Jun 2, 2006 | Jun 2, 2006 | Blackbrush O & G, Inc. | Petty Ranch #905 | 5,800 | 47939537 |
| 620004Amendment | Jun 2, 2006 | Jun 2, 2006 | St. Mary Land & Exploration Co. | Petty Ranch #905 | 5,800 | 47939537 |
| 620181 | Jun 1, 2006 | Jun 1, 2006 | EOG Resources, Inc. | James Trust #21 | 8,200 | 47939538 |
| 620097 | May 31, 2006 | May 31, 2006 | Houston Exploration Company, The | Vaquillas Ranch "1" #2 | 9,600 | 47939536 |
| 619755 | May 31, 2006 | May 31, 2006 | Conocophillips Company | B.M.T. #190 | 10,100 | 47939535 |
| 620001 | May 26, 2006 | May 26, 2006 | Metano Energy, LP | Galvan #J 1 | 6,650 | 47939534 |
| 619961 | May 26, 2006 | May 26, 2006 | EOG Resources, Inc. | Slator Ranch #U 3 | 12,000 | 47939533 |
| 619641 | May 26, 2006 | May 26, 2006 | Conocophillips Company | B.M.T. A #19 | 9,400 | 47939532 |
| 619603 | May 26, 2006 | May 26, 2006 | Metano Energy, LP | Galvan #I 1 | 6,550 | 47939530 |
| 619602 | May 25, 2006 | May 25, 2006 | Rosetta Resources Operating LP | G. B. G. L. and C. Co. Ltd. #13 | 7,500 | 47939529 |
| 619594 | May 24, 2006 | May 24, 2006 | Rosetta Resources Operating LP | South Callaghan Ranch #238 | 8,500 | 47939531 |
| 619594Amendment | May 24, 2006 | May 24, 2006 | Rosetta Resources Operating LP | South Callaghan Ranch #238 | 8,800 | 47939531 |
| 619593 | May 24, 2006 | May 24, 2006 | Rosetta Resources Operating LP | South Callaghan Ranch #237 | 8,000 | 47939528 |
| 619593Amendment | May 24, 2006 | May 24, 2006 | Rosetta Resources Operating LP | South Callaghan Ranch #237 | 8,000 | 47939528 |
| 619592 | May 24, 2006 | May 24, 2006 | Rosetta Resources Operating LP | South Callaghan Ranch #236 | 8,000 | 47939527 |
| 619731 | May 23, 2006 | May 23, 2006 | Lewis Petro Properties, Inc. | Webb County School Land 1383 #37 | 7,700 | 47939526 |
| 619730 | May 23, 2006 | May 23, 2006 | Lewis Petro Properties, Inc. | Owen Briscoe 1134 #2 | 7,700 | 47939525 |
| 619569 | May 22, 2006 | May 22, 2006 | Evans, S. Lavon Jr. Oper. Co. | Puig Aviator #1 | 13,400 | 47939128 |
| 619315 | May 22, 2006 | May 22, 2006 | Peak Energy Corporation | Palafox 59 #4 | 7,000 | 47939519 |
| 619314 | May 22, 2006 | May 22, 2006 | Peak Energy Corporation | Palafox 59 #3 | 7,000 | 47939518 |
| 619313 | May 22, 2006 | May 22, 2006 | Peak Energy Corporation | Palafox 59 #2 | 7,000 | 47939523 |
| 619311 | May 22, 2006 | May 22, 2006 | Peak Energy Corporation | Martin Estate #390 | 7,000 | 47939520 |
| 619310 | May 22, 2006 | May 22, 2006 | Peak Energy Corporation | Martin Estate #291 | 7,000 | 47939521 |
| 619309 | May 22, 2006 | May 22, 2006 | Peak Energy Corporation | Martin Estate #2B | 7,000 | 47939522 |
| 619564 | May 19, 2006 | May 19, 2006 | EOG Resources, Inc. | Garner, Tully C. #92 | 8,100 | 47939524 |
| 619329 | May 16, 2006 | May 16, 2006 | Lewis Petro Properties, Inc. | Stanley #1 | 3,800 | 47939517 |
| 618779 | May 16, 2006 | May 16, 2006 | Kasper Disposal LLC | Botello-Killam #1SW | 5,400 | 47939503 |
| 619256 | May 15, 2006 | May 15, 2006 | Killam Oil Co., Ltd. | Dcrr Sec 3C #49 | 7,000 | 47939516 |
| 619250 | May 15, 2006 | May 15, 2006 | Blackbrush O & G, Inc. | Gates 05D 12 #1287 | 10,000 | 47939515 |
| 619185 | May 15, 2006 | May 15, 2006 | Lewis Petro Properties, Inc. | Rettig, Mabel 2292 "A" #58HH | 12,600 | 47939511 |
| 619185Amendment | May 15, 2006 | May 15, 2006 | Lewis Petro Properties, Inc. | Rettig, Mabel 2292 "A" #58HH | 12,600 | 47939511 |
| 619193 | May 12, 2006 | May 12, 2006 | Lewis Petro Properties, Inc. | Beasley Welhausen State 98 #33 | 7,100 | 47939514 |
| 619192 | May 12, 2006 | May 12, 2006 | Lewis Petro Properties, Inc. | Beasley Welhausen State 105 #44 | 7,100 | 47939513 |
| 619087 | May 12, 2006 | May 12, 2006 | Escondido Resources GP, LLC | Briscoe #28 | 6,000 | 47939512 |
| 618670 | May 12, 2006 | May 12, 2006 | Conocophillips Company | Vaquillas Ranch H #224 | 12,900 | 47939507 |
| 619168 | May 11, 2006 | May 11, 2006 | Evans, S. Lavon Jr. Oper. Co. | Los Ojuelos Mineral Trust #5H | 13,200 | 47939510 |
| 619136 | May 11, 2006 | May 11, 2006 | Lewis Petro Properties, Inc. | Webb County School Land 1383 #29 | 7,800 | 47939509 |
| 619039 | May 11, 2006 | May 11, 2006 | Killam Oil Co., Ltd. | Killam "State" 2369 #1 | 12,000 | 47939508 |
| 618938 | May 10, 2006 | May 10, 2006 | EOG Resources, Inc. | Garner, Tully C. #86 | 8,500 | 47940258 |
| 618943 | May 9, 2006 | May 9, 2006 | Killam Oil Co., Ltd. | Dcrc 3-C #50 | 7,000 | 47939506 |
| 618892 | May 8, 2006 | May 8, 2006 | Houston Exploration Company, The | Vaquillas Ranch "1" #1 | 10,000 | 47939504 |
| 618753 | May 5, 2006 | May 5, 2006 | Houston Exploration Company, The | Vaquillas Ranch "2" #1 | 9,850 | 47939502 |
| 618642 | May 3, 2006 | May 3, 2006 | Lewis Petro Properties, Inc. | Beasley State 97 #31 | 8,000 | 47939501 |
| 618640 | May 3, 2006 | May 3, 2006 | EOG Resources, Inc. | El Viejito "C" #1HH | 12,000 | 47939500 |
| 618635 | May 3, 2006 | May 3, 2006 | EOG Resources, Inc. | Billings "AB" GU #2HH | 11,900 | 47939499 |
| 618560 | May 3, 2006 | May 3, 2006 | Metano Energy, LP | Galvan #G 1 | 6,550 | 47939498 |
| 618494 | May 2, 2006 | May 2, 2006 | EOG Resources, Inc. | Slator Ranch #X 1 | 11,999 | 47939497 |
| 618098 | May 2, 2006 | May 2, 2006 | Blackbrush O & G, Inc. | Petty Ranch #9019 | 5,500 | 47939491 |
| 618091 | May 2, 2006 | May 2, 2006 | Blackbrush O & G, Inc. | Petty Ranch #4023 | 5,400 | 47939490 |
| 618407 | May 1, 2006 | May 1, 2006 | Killam Oil Co., Ltd. | Killam & Hurd Fee Porcion 16 #1 | 7,000 | 47939494 |
| 618407Amendment | May 1, 2006 | May 1, 2006 | Killam Oil Co., Ltd. | Killam & Hurd Fee Porcion 16 #1 | 7,210 | 47939494 |
| 618380 | May 1, 2006 | May 1, 2006 | Conocophillips Company | McKendrick 20-1B #406 | 350 | 47939496 |
| 618356 | May 1, 2006 | May 1, 2006 | Conocophillips Company | Kinder Morgan 8-1 #406 | 350 | 47939495 |
| 618369 | Apr 28, 2006 | Apr 28, 2006 | Lewis Petro Properties, Inc. | Owen #4 | 7,550 | 47939493 |
| 618304 | Apr 27, 2006 | Apr 27, 2006 | Kebo Oil & Gas, Inc. | Moos Ranch #1 | 14,700 | 47939492 |
| 618188 | Apr 25, 2006 | Apr 25, 2006 | Lewis Petro Properties, Inc. | Beasley State 97 #19 | 7,200 | 47939489 |
| 618122 | Apr 25, 2006 | Apr 25, 2006 | Lewis Petro Properties, Inc. | Palafox, H. I. #3106 | 4,000 | 47937632 |
| 618122Amendment | Apr 25, 2006 | Apr 25, 2006 | Lewis Petro Properties, Inc. | Palafox, H. I. #3106 | 4,000 | 47937632 |
| 617560 | Apr 19, 2006 | Apr 19, 2006 | Conocophillips Company | Taubman #6 | 10,100 | 47939487 |
| 617558 | Apr 19, 2006 | Apr 19, 2006 | Conocophillips Company | Carr #146 | 10,100 | 47939488 |
| 617679 | Apr 17, 2006 | Apr 17, 2006 | Lewis Petro Properties, Inc. | Owen 3 #4 | 7,400 | 47939486 |
| 617313 | Apr 10, 2006 | Apr 10, 2006 | Block "T" Petroleum, Inc. | Kathleen Marie #2 | 8,500 | 47939485 |
| 617265 | Apr 10, 2006 | Apr 10, 2006 | Chevron U. S. A. Inc. | Bruni Mineral Trust "B" #39 | 9,950 | 47939484 |
| 616937 | Apr 10, 2006 | Apr 10, 2006 | Rosetta Resources Operating LP | El Corazon Ranch #3 | 8,500 | 47939480 |
| 616934 | Apr 10, 2006 | Apr 10, 2006 | Rosetta Resources Operating LP | El Corazon Ranch #2 | 8,100 | 47939479 |
| 616932 | Apr 10, 2006 | Apr 10, 2006 | Rosetta Resources Operating LP | El Corazon Ranch #1 | 8,700 | 47939481 |
| 617237 | Apr 7, 2006 | Apr 7, 2006 | Lewis Petro Properties, Inc. | Beasley Welhausen State 105 #18 | 7,200 | 47939483 |
| 617227 | Apr 7, 2006 | Apr 7, 2006 | Virtex Petroleum Company, Inc. | S.A. James, Estate #29 | 7,800 | 47939482 |
| 617102 | Apr 7, 2006 | Apr 7, 2006 | EOG Resources, Inc. | Staggs #7HH | 13,000 | 47939477 |
| 617101 | Apr 7, 2006 | Apr 7, 2006 | EOG Resources, Inc. | Garner, Tully C. #90 | 8,500 | 47939478 |
| 617135 | Apr 6, 2006 | Apr 6, 2006 | Killam Oil Co., Ltd. | Killam & Hurd Fee Porcion 17 #1 | 6,603 | 47939100 |
| 617021 | Apr 5, 2006 | Apr 5, 2006 | Lewis Petro Properties, Inc. | Owens, E. Arleigh #2 | 8,000 | 47939476 |
| 616894 | Apr 3, 2006 | Apr 3, 2006 | Chevron U. S. A. Inc. | Bruni Mineral Trust "B" #41 | 10,100 | 47939475 |
| 616628 | Mar 31, 2006 | Mar 31, 2006 | Safari Production Company, Inc. | Villarreal #1 | 9,200 | 47937777 |
| 616698 | Mar 30, 2006 | Mar 30, 2006 | Lewis Petro Properties, Inc. | Palafox "H" #1H | 12,000 | 47938053 |
| 616662 | Mar 29, 2006 | Mar 29, 2006 | Escondido Resources GP, LLC | Fasken #31 | 7,000 | 47939473 |
| 616657 | Mar 29, 2006 | Mar 29, 2006 | Lewis Petro Properties, Inc. | Gates "O" TR2 #1 | 6,600 | 47939474 |
| 616589 | Mar 28, 2006 | Mar 28, 2006 | EOG Resources, Inc. | Garner, Tully C. #87 | 9,100 | 47939472 |
| 616589Amendment | Mar 28, 2006 | Mar 28, 2006 | EOG Resources, Inc. | Garner, Tully C. #87 | 9,100 | 47939472 |
| 616584 | Mar 28, 2006 | Mar 28, 2006 | EOG Resources, Inc. | Garner, Tully C. #89 | 9,100 | 47939471 |
| 616486 | Mar 28, 2006 | Mar 28, 2006 | Virtex Petroleum Company, Inc. | James, S. A. Estate #28 | 7,800 | 47939469 |
| 616444 | Mar 28, 2006 | Mar 28, 2006 | Lewis Petro Properties, Inc. | Booth, W.V., Jr. 2292 H #8AH | 10,200 | 47939468 |
| 616355 | Mar 28, 2006 | Mar 28, 2006 | Blackbrush O & G, Inc. | Petty Ranch #5028 | 5,500 | 47939470 |
| 615883 | Mar 28, 2006 | Mar 28, 2006 | Conocophillips Company | Lundell #97 | 9,700 | 47939460 |
| 615883Amendment | Mar 28, 2006 | Mar 28, 2006 | Conocophillips Company | Lundell #97 | 9,700 | 47939460 |
| 615883Amendment | Mar 28, 2006 | Mar 28, 2006 | Conocophillips Company | Lundell #97 | 9,700 | 47939460 |
| 616313 | Mar 23, 2006 | Mar 23, 2006 | Lewis Petro Properties, Inc. | Owen Briscoe 2147 #3 | 8,000 | 47939467 |