| 624885 | Aug 24, 2006 | Aug 24, 2006 | Lewis Petro Properties, Inc. | Leyendecker Hunter "B" 1152 #16 | 7,800 | 47939637 |
| 624794 | Aug 24, 2006 | Aug 24, 2006 | Huber Energy L.P. | Briscoe "A" #429 | 5,400 | 47939636 |
| 624794Amendment | Aug 24, 2006 | Aug 24, 2006 | Rockford Energy Partners II, LLC | Briscoe "A" #429 | 5,400 | 47939636 |
| 624758 | Aug 23, 2006 | Aug 23, 2006 | EOG Resources, Inc. | Gallagher, Gloria B #3HH | 14,000 | 47939634 |
| 624757 | Aug 23, 2006 | Aug 23, 2006 | EOG Resources, Inc. | Benavides FMT #8HH | 11,750 | 47939633 |
| 624628 | Aug 23, 2006 | Aug 23, 2006 | Awp Operating Company | Booth, W. V. #14 | 6,850 | 47939632 |
| 624679 | Aug 21, 2006 | Aug 21, 2006 | Eagle Oil & Gas Co. | Villareal #1 | 12,500 | 47939631 |
| 624420 | Aug 21, 2006 | Aug 21, 2006 | Rosetta Resources Operating LP | South Callaghan Ranch #241 | 9,000 | 47939630 |
| 624342 | Aug 21, 2006 | Aug 21, 2006 | Rosetta Resources Operating LP | South Callaghan Ranch #240 | 8,800 | 47939626 |
| 623226 | Aug 21, 2006 | Aug 21, 2006 | Houston Exploration Company, The | Vaquillas Ranch "2" #3 | 9,900 | 47939601 |
| 623225 | Aug 21, 2006 | Aug 21, 2006 | Houston Exploration Company, The | Vaquillas Ranch "2" #4 | 9,900 | 47939600 |
| 624253 | Aug 18, 2006 | Aug 18, 2006 | Blackbrush O & G, Inc. | Petty Ranch #1108 | 5,750 | 47938196 |
| 624547 | Aug 17, 2006 | Aug 17, 2006 | EOG Resources, Inc. | Slator Ranch #U 4 | 12,500 | 47939629 |
| 624547Amendment | Aug 17, 2006 | Aug 17, 2006 | EOG Resources, Inc. | Slator Ranch #U 4 | 12,500 | 47939629 |
| 624541 | Aug 17, 2006 | Aug 17, 2006 | Hughes, Dan A. Company, L.P. | Mullins, Barbara #1 | 8,000 | 47939628 |
| 624428 | Aug 16, 2006 | Aug 16, 2006 | Kerr-McGee Oil & Gas Onshore LP | McKendrick #23 | 10,600 | 47939627 |
| 624399 | Aug 15, 2006 | Aug 15, 2006 | Kerr-McGee Oil & Gas Onshore LP | McKendrick #1 | 9,560 | 47933661 |
| 623981 | Aug 15, 2006 | Aug 15, 2006 | Rosetta Resources Operating LP | El Corazon Ranch #6 | 8,600 | 47939623 |
| 624247 | Aug 14, 2006 | Aug 14, 2006 | Blackbrush O & G, Inc. | Petty Ranch #1025 | 5,800 | 47939625 |
| 624221 | Aug 11, 2006 | Aug 11, 2006 | Killam Oil Co., Ltd. | Puig #3 | 12,000 | 47939624 |
| 623993 | Aug 11, 2006 | Aug 11, 2006 | Killam Oil Co., Ltd. | Vaquillas Borrego #23 | 12,500 | 47939622 |
| 623993Amendment | Aug 11, 2006 | Aug 11, 2006 | Killam Oil Co., Ltd. | Vaquillas Borrego #23 | 11,800 | 47939622 |
| 624141 | Aug 10, 2006 | Aug 10, 2006 | Houston Exploration Company, The | Vaquillas Ranch "3" #1 | 9,600 | 47939621 |
| 623789 | Aug 10, 2006 | Aug 10, 2006 | Metano Energy, LP | Galvan #K 1 | 6,650 | 47939619 |
| 623717 | Aug 9, 2006 | Aug 9, 2006 | Rosetta Resources Operating LP | El Corazon Ranch #11 | 8,700 | 47939613 |
| 624008 | Aug 8, 2006 | Aug 8, 2006 | Devon Energy Production Co, L.P. | Vaquillas #3 | 11,000 | 47939618 |
| 623918 | Aug 7, 2006 | Aug 7, 2006 | Escondido Resources GP, LLC | Fasken B #35 | 7,000 | 47939617 |
| 623917 | Aug 7, 2006 | Aug 7, 2006 | Escondido Resources GP, LLC | Fasken #34 | 7,000 | 47939616 |
| 623916 | Aug 7, 2006 | Aug 7, 2006 | Escondido Resources GP, LLC | Fasken #33 | 7,000 | 47939615 |
| 623908 | Aug 7, 2006 | Aug 7, 2006 | Blackbrush O & G, Inc. | Petty Ranch #1007 | 5,750 | 47939614 |
| 623908Amendment | Aug 7, 2006 | Aug 7, 2006 | Blackbrush O & G, Inc. | Petty Ranch #1007 | 5,750 | 47939614 |
| 623796 | Aug 3, 2006 | Aug 3, 2006 | Virtex Petroleum Company, Inc. | Fasken L. & M. - St. TX. 70-B #1 | 7,200 | 47939612 |
| 623795 | Aug 3, 2006 | Aug 3, 2006 | Virtex Petroleum Company, Inc. | Fasken L. & M. - St. of TX. 53-A #1 | 7,000 | 47939610 |
| 623793 | Aug 3, 2006 | Aug 3, 2006 | Virtex Petroleum Company, Inc. | Fasken, L.& M.-State of TX. 68-B #1 | 7,200 | 47939611 |
| 623339 | Aug 3, 2006 | Aug 3, 2006 | Rosetta Resources Operating LP | South Callaghan Ranch #242 | 9,300 | 47939607 |
| 623335 | Aug 3, 2006 | Aug 3, 2006 | Rosetta Resources Operating LP | South Callaghan Ranch #244 | 9,400 | 47939606 |
| 623725 | Aug 2, 2006 | Aug 2, 2006 | Escondido Resources GP, LLC | Fasken #32 | 7,000 | 47939609 |
| 623684 | Aug 2, 2006 | Aug 2, 2006 | Killam Oil Co., Ltd. | Killam-Garcia State Gas Unit #1 | 10,500 | 47939608 |
| 623684Amendment | Aug 2, 2006 | Aug 2, 2006 | Killam Oil Co., Ltd. | Killam-Garcia State Gas Unit #1 | 9,550 | 47939608 |
| 623147 | Aug 1, 2006 | Aug 1, 2006 | Whittier Operating Inc. | Rachal #4 | 7,800 | 47939604 |
| 623430 | Jul 28, 2006 | Jul 28, 2006 | Evans, S. Lavon Jr. Oper. Co. | Los Ojuelos Mineral Trust #8 | 13,000 | 47939605 |
| 623365 | Jul 27, 2006 | Jul 27, 2006 | Lewis Petro Properties, Inc. | Beasley State 97 #55 | 7,100 | 47939603 |
| 622930 | Jul 27, 2006 | Jul 27, 2006 | Conocophillips Company | Taubman #5 | 10,650 | 47939597 |
| 623242 | Jul 26, 2006 | Jul 26, 2006 | Lewis Petro Properties, Inc. | Owen Briscoe 2147 #4 | 7,775 | 47939602 |
| 622811 | Jul 26, 2006 | Jul 26, 2006 | Huber Energy L.P. | Briscoe "E" #304 | 4,600 | 47939592 |
| 622808 | Jul 26, 2006 | Jul 26, 2006 | Huber Energy L.P. | Briscoe "G" #8 | 5,300 | 47939590 |
| 622804 | Jul 26, 2006 | Jul 26, 2006 | Huber Energy L.P. | Briscoe "E" #240 | 5,200 | 47939589 |
| 623133 | Jul 25, 2006 | Jul 25, 2006 | Whittier Operating Inc. | Rachal #6 | 7,800 | 47939599 |
| 623091 | Jul 25, 2006 | Jul 25, 2006 | EOG Resources, Inc. | Staggs #8HH | 13,000 | 47939598 |
| 623007 | Jul 25, 2006 | Jul 25, 2006 | Carburante Exploration Co, Ltd. | Villarreal, Amando #1 | 12,250 | 47938584 |
| 623009 | Jul 24, 2006 | Jul 24, 2006 | Rosetta Resources Operating LP | El Corazon Ranch #8 | 9,900 | 47939596 |
| 622997 | Jul 24, 2006 | Jul 24, 2006 | Blackbrush O & G, Inc. | Petty Ranch #1506 | 5,800 | 47939595 |
| 622982 | Jul 21, 2006 | Jul 21, 2006 | Lewis Petro Properties, Inc. | Barreda-Gonzalez 2292 #6 | 7,100 | 47939594 |
| 622956 | Jul 20, 2006 | Jul 20, 2006 | Houston Exploration Company, The | Vaquillas Ranch "2" #5 | 9,900 | 47939593 |
| 622929 | Jul 20, 2006 | Jul 20, 2006 | Virtex Petroleum Company, Inc. | Martin Trust's- St. of TX. #6601 | 7,200 | 47939591 |
| 622909 | Jul 20, 2006 | Jul 20, 2006 | Lewis Petro Properties, Inc. | Gates "O" TR2 #2 | 5,900 | 47939588 |
| 622898 | Jul 20, 2006 | Jul 20, 2006 | Lewis Petro Properties, Inc. | Beasley State 97 #56 | 7,100 | 47939587 |
| 622796 | Jul 20, 2006 | Jul 20, 2006 | Lewis Petro Properties, Inc. | Booth Unocal H #7U | 10,632 | 47939586 |
| 622794 | Jul 18, 2006 | Jul 18, 2006 | Houston Exploration Company, The | Vaquillas Ranch "1" #3 | 9,700 | 47939585 |
| 622794Amendment | Jul 18, 2006 | Jul 18, 2006 | Houston Exploration Company, The | Vaquillas Ranch "1" #3 | 9,700 | 47939585 |
| 622716 | Jul 18, 2006 | Jul 18, 2006 | Killam Oil Co., Ltd. | Vaquillas-Borrego #24 | 2,000 | 47939584 |
| 622717 | Jul 17, 2006 | Jul 17, 2006 | Blackbrush O & G, Inc. | Gates Ranch FGH #605 | 5,800 | 47939583 |
| 622717Amendment | Jul 17, 2006 | Jul 17, 2006 | Blackbrush O & G, Inc. | Gates Ranch FGH #605 | 5,800 | 47939583 |
| 622691 | Jul 17, 2006 | Jul 17, 2006 | Blackbrush O & G, Inc. | Gates 05S 6 #1287 | 5,800 | 47939582 |
| 622587 | Jul 14, 2006 | Jul 14, 2006 | Kerr-McGee Oil & Gas Onshore LP | McKendrick #26 | 10,600 | 47939581 |
| 622587Amendment | Jul 14, 2006 | Jul 14, 2006 | Kerr-McGee Oil & Gas Onshore LP | McKendrick #26 | 10,600 | 47939581 |
| 622586 | Jul 14, 2006 | Jul 14, 2006 | Kerr-McGee Oil & Gas Onshore LP | McKendrick #25 | 10,600 | 47939580 |
| 622585 | Jul 14, 2006 | Jul 14, 2006 | Kerr-McGee Oil & Gas Onshore LP | McKendrick #24 | 10,600 | 47939579 |
| 622458 | Jul 13, 2006 | Jul 13, 2006 | EOG Resources, Inc. | Tijerina #4HH | 13,000 | 47939577 |
| 622365 | Jul 11, 2006 | Jul 11, 2006 | Virtex Petroleum Company, Inc. | M. Martin-St. of TX. #4902 | 7,300 | 47939576 |
| 622339 | Jul 11, 2006 | Jul 11, 2006 | United Resources LP | Link Ranch #7 | 8,300 | 47939575 |
| 622339Amendment | Jul 11, 2006 | Jul 11, 2006 | United Resources LP | Link Ranch #7 | 8,300 | 47939575 |
| 622280 | Jul 11, 2006 | Jul 11, 2006 | Blackbrush O & G, Inc. | Petty Ranch #801 | 5,600 | 47939574 |
| 622160 | Jul 7, 2006 | Jul 7, 2006 | Huber Energy L.P. | Briscoe "J" #16 | 5,400 | 47939573 |
| 622159 | Jul 7, 2006 | Jul 7, 2006 | Huber Energy L.P. | Briscoe "J" #15 | 5,400 | 47939572 |
| 622157 | Jul 7, 2006 | Jul 7, 2006 | Lewis Petro Properties, Inc. | Owen-Briscoe 1723 #4 | 7,750 | 47939571 |
| 621753 | Jul 5, 2006 | Jul 5, 2006 | Conocophillips Company | Benavides, Gloria BMT A #6 | 9,100 | 47939563 |
| 621749 | Jul 5, 2006 | Jul 5, 2006 | Conocophillips Company | B.M.T. A #21 | 9,400 | 47939562 |
| 621740 | Jul 5, 2006 | Jul 5, 2006 | Conocophillips Company | B.M.T. A #18 | 9,400 | 47939561 |
| 621976 | Jul 3, 2006 | Jul 3, 2006 | Houston Exploration Company, The | Vaquillas Ranch "2" #2 | 9,900 | 47939570 |
| 621960 | Jul 3, 2006 | Jul 3, 2006 | Lewis Petro Properties, Inc. | Beasley Welhausen State 98 #60 | 7,200 | 47939569 |
| 621959 | Jul 3, 2006 | Jul 3, 2006 | Lewis Petro Properties, Inc. | Beasley Welhausen State 98 #15 | 7,200 | 47939568 |
| 621645 | Jul 3, 2006 | Jul 3, 2006 | Conocophillips Company | B.M.T. C #8 | 9,658 | 47939211 |
| 621933 | Jun 30, 2006 | Jun 30, 2006 | Lewis Petro Properties, Inc. | Beasley State 97 #35 | 7,200 | 47939567 |
| 621932 | Jun 30, 2006 | Jun 30, 2006 | Lewis Petro Properties, Inc. | Beasley State 97 #27 | 7,100 | 47939566 |
| 621928 | Jun 30, 2006 | Jun 30, 2006 | Lewis Petro Properties, Inc. | Webb County School Land 1383 #40 | 7,720 | 47939565 |
| 621856 | Jun 30, 2006 | Jun 30, 2006 | Lewis Petro Properties, Inc. | Booth, W.v.jr.et al 2292 H #5BH | 12,000 | 47938994 |
| 621847 | Jun 30, 2006 | Jun 30, 2006 | EOG Resources, Inc. | Tijerina #3HH | 14,000 | 47939564 |
| 621564 | Jun 29, 2006 | Jun 29, 2006 | Huber Energy L.P. | Briscoe -A- #630 | 5,468 | 47932048 |
| 621557 | Jun 29, 2006 | Jun 29, 2006 | Conocophillips Company | Vaquillas Ranch H #226 | 12,800 | 47939557 |
| 621748 | Jun 28, 2006 | Jun 28, 2006 | Ricochet Energy, Inc. | Las Blancas #1 | 14,000 | 47939560 |
| 621717 | Jun 28, 2006 | Jun 28, 2006 | Evans, S. Lavon Jr. Oper. Co. | Los Ojuelos Mineral Trust #7 | 11,000 | 47939559 |
| 621713 | Jun 28, 2006 | Jun 28, 2006 | Evans, S. Lavon Jr. Oper. Co. | Los Ojuelos Mineral Trust #6 | 11,000 | 47939558 |
| 621432 | Jun 27, 2006 | Jun 27, 2006 | Conocophillips Company | Billings Heirs #4 | 8,820 | 47939556 |
| 621304 | Jun 23, 2006 | Jun 23, 2006 | Blackbrush O & G, Inc. | Gates 05S 4 #1726 | 5,800 | 47939555 |
| 621394 | Jun 22, 2006 | Jun 22, 2006 | Lewis Petro Properties, Inc. | Beasley State 97 #32 | 7,200 | 47939554 |
| 621390 | Jun 22, 2006 | Jun 22, 2006 | Lewis Petro Properties, Inc. | Owen Briscoe 1133 #3 | 7,700 | 47939553 |
| 621138 | Jun 21, 2006 | Jun 21, 2006 | Sabco Operating Company | James Trust #19 | 7,200 | 47939552 |
| 621111 | Jun 21, 2006 | Jun 21, 2006 | Blackbrush O & G, Inc. | Gates Ranch 05S #7016 | 6,050 | 47939550 |
| 621260 | Jun 20, 2006 | Jun 20, 2006 | Conocophillips Company | B.M.T. 471 #3 | 10,100 | 47939551 |