| 630764 | Dec 19, 2006 | Dec 19, 2006 | Lewis Petro Properties, Inc. | Leyendecker Hunter "B" 1152 #27 | 7,800 | 47939725 |
| 630491 | Dec 19, 2006 | Dec 19, 2006 | Conocophillips Company | Vaquillas Ranch H #224A | 13,100 | 47939722 |
| 630500 | Dec 13, 2006 | Dec 13, 2006 | Lewis Petro Properties, Inc. | Meador State #17 | 7,200 | 47939723 |
| 630113 | Dec 13, 2006 | Dec 13, 2006 | Rosetta Resources Operating LP | South Callaghan Ranch Unit #248 | 8,900 | 47939721 |
| 630076 | Dec 13, 2006 | Dec 13, 2006 | Rosetta Resources Operating LP | G.B.G.L. & C. Co. Ltd Unit #14 | 8,400 | 47939720 |
| 629240 | Dec 13, 2006 | Dec 13, 2006 | Houston Exploration Company, The | Vaquillas Ranch "1" #4 | 9,600 | 47939702 |
| 630419 | Dec 12, 2006 | Dec 12, 2006 | Lewis Petro Properties, Inc. | Beasley State 97 #57 | 7,200 | 47939719 |
| 630285 | Dec 12, 2006 | Dec 12, 2006 | Chesapeake Operating, Inc. | Callaghan Ranch #67 | 8,000 | 47939718 |
| 628155 | Dec 12, 2006 | Dec 12, 2006 | Killam Oil Co., Ltd. | Killam-Hurd-McLean 121 #3 | 14,300 | 47939123 |
| 630131 | Dec 8, 2006 | Dec 8, 2006 | Lewis Petro Properties, Inc. | Owen Briscoe 2147 #6 | 8,000 | 47939717 |
| 630099 | Dec 7, 2006 | Dec 7, 2006 | Virtex Petroleum Company, Inc. | Martin Trust's-St. of TX #6602 | 7,200 | 47939716 |
| 630052 | Dec 6, 2006 | Dec 6, 2006 | Rosetta Resources Operating LP | South Callaghan Ranch Unit #247 | 8,670 | 47939715 |
| 630018 | Dec 6, 2006 | Dec 6, 2006 | EOG Resources, Inc. | Union Ranch-Lopez #1 HH | 13,500 | 47939714 |
| 629790 | Dec 1, 2006 | Dec 1, 2006 | Chesapeake Operating, Inc. | Callaghan Ranch #66 | 9,000 | 47939713 |
| 629771 | Dec 1, 2006 | Dec 1, 2006 | Huber Energy L.P. | Briscoe "E"-A #1070 | 4,700 | 47939712 |
| 629768 | Nov 30, 2006 | Nov 30, 2006 | Blackbrush O & G, Inc. | Gates 05D #604 | 10,500 | 47939711 |
| 629753 | Nov 30, 2006 | Nov 30, 2006 | Lewis Petro Properties, Inc. | Beasley State 97 #67 | 7,200 | 47939710 |
| 629418 | Nov 30, 2006 | Nov 30, 2006 | Killam Oil Co., Ltd. | Puig #4 | 12,000 | 47939709 |
| 629561 | Nov 28, 2006 | Nov 28, 2006 | Metano Energy, LP | Galvan L #1 | 6,700 | 47939708 |
| 629559 | Nov 28, 2006 | Nov 28, 2006 | Metano Energy, LP | Galvan M #1 | 6,550 | 47939707 |
| 629501 | Nov 28, 2006 | Nov 28, 2006 | Killam Oil Co., Ltd. | Killam & Hurd Fee Porcion 15 #1 | 5,000 | 47939706 |
| 629315 | Nov 21, 2006 | Nov 21, 2006 | EOG Resources, Inc. | Moreno GU #1HH | 12,000 | 47939705 |
| 629145 | Nov 21, 2006 | Nov 21, 2006 | Evans, S. Lavon Jr. Oper. Co. | Los Ojuelos Mnrl Trst (Ochoa T1) #10 | 14,000 | 47939704 |
| 629266 | Nov 20, 2006 | Nov 20, 2006 | Ricochet Energy, Inc. | Running "W" 598 #2 | 10,000 | 47939703 |
| 629115 | Nov 17, 2006 | Nov 17, 2006 | Lewis Petro Properties, Inc. | Beasley Welhausen State 105 #58 | 6,900 | 47939700 |
| 628528 | Nov 17, 2006 | Nov 17, 2006 | Conocophillips Company | B.M.T. #187 | 10,400 | 47939697 |
| 628527 | Nov 17, 2006 | Nov 17, 2006 | Conocophillips Company | Benavides, Rosa V. A #101 | 9,800 | 47939696 |
| 628521 | Nov 17, 2006 | Nov 17, 2006 | Conocophillips Company | Carr #147 | 9,970 | 47939701 |
| 628521Amendment | Nov 17, 2006 | Nov 17, 2006 | Conocophillips Company | Carr #147 | 9,970 | 47939701 |
| 629079 | Nov 16, 2006 | Nov 16, 2006 | Chapco, Inc. | Olmitos Ranch 1529 #2 | 10,250 | 47939699 |
| 628928 | Nov 13, 2006 | Nov 13, 2006 | Lewis Petro Properties, Inc. | Owen Briscoe 1134 #3 | 8,000 | 47939698 |
| 628779 | Nov 10, 2006 | Nov 10, 2006 | Chesapeake Operating, Inc. | El Gato #32 | 12,000 | 47939695 |
| 628772 | Nov 9, 2006 | Nov 9, 2006 | Chesapeake Operating, Inc. | Bruni Mineral Trust "A" #46 | 12,000 | 47939694 |
| 628736 | Nov 9, 2006 | Nov 9, 2006 | Rosetta Resources Operating LP | South Callaghan Ranch #252 | 8,800 | 47939693 |
| 628698 | Nov 8, 2006 | Nov 8, 2006 | Chesapeake Operating, Inc. | Bruni Mineral Trust "A" #48 | 12,000 | 47939692 |
| 628564 | Nov 6, 2006 | Nov 6, 2006 | EOG Resources, Inc. | Kha #10 | 7,020 | 47933545 |
| 628546 | Nov 6, 2006 | Nov 6, 2006 | Rosetta Resources Operating LP | G.B.G.L. & C. Co. Ltd #15 | 8,500 | 47939691 |
| 628463 | Nov 2, 2006 | Nov 2, 2006 | EOG Resources, Inc. | North Marshall St Wells Fargo GU #2HH | 12,500 | 47939690 |
| 628463Amendment | Nov 2, 2006 | Nov 2, 2006 | EOG Resources, Inc. | North Marshall St Wells Fargo GU #2HH | 12,500 | 47939690 |
| 628425 | Nov 2, 2006 | Nov 2, 2006 | Chesapeake Operating, Inc. | Bruni Mineral Trust "A" #47 | 12,000 | 47939689 |
| 628324 | Oct 31, 2006 | Oct 31, 2006 | Laredo Energy IV, L.P. | Vaquillas Unproven Minerals, Ltd #1 | 11,500 | 47939688 |
| 628324Amendment | Oct 31, 2006 | Oct 31, 2006 | Laredo Energy IV, L.P. | Vaquillas Ranch Minerals, Ltd #1 | 11,500 | 47939688 |
| 627952 | Oct 30, 2006 | Oct 30, 2006 | Huber Energy L.P. | Briscoe "G" #9 | 5,100 | 47939686 |
| 627783 | Oct 27, 2006 | Oct 27, 2006 | Huber Energy L.P. | Briscoe "E" #261 | 5,200 | 47939685 |
| 628042 | Oct 25, 2006 | Oct 25, 2006 | Killam Oil Co., Ltd. | Dcrc Section 3B #51 | 3,000 | 47939687 |
| 627739 | Oct 19, 2006 | Oct 19, 2006 | Rosetta Resources Operating LP | South Callaghan Ranch #245 | 9,500 | 47939684 |
| 627738 | Oct 18, 2006 | Oct 18, 2006 | Huber Energy L.P. | Briscoe "K" State A #11 | 5,400 | 47939683 |
| 627652 | Oct 17, 2006 | Oct 17, 2006 | Rosetta Resources Operating LP | South Callaghan Ranch #250 | 8,000 | 47939682 |
| 625164 | Oct 17, 2006 | Oct 17, 2006 | Houston Exploration Company, The | Vaquillas Ranch "3" #2 | 9,600 | 47939638 |
| 627538 | Oct 16, 2006 | Oct 16, 2006 | Houston Exploration Company, The | Vaquillas Ranch "4" #1 | 10,400 | 47939681 |
| 627503 | Oct 16, 2006 | Oct 16, 2006 | Rosetta Resources Operating LP | South Callaghan Ranch #249 | 9,200 | 47939680 |
| 626837 | Oct 16, 2006 | Oct 16, 2006 | Conocophillips Company | Marshall, S. G. #6 | 12,950 | 47939672 |
| 626977 | Oct 13, 2006 | Oct 13, 2006 | Conocophillips Company | B.M.T. 471 #2 | 10,100 | 47939675 |
| 626977Amendment | Oct 13, 2006 | Oct 13, 2006 | Conocophillips Company | B.M.T. 471 #2 | 10,100 | 47939675 |
| 627423 | Oct 12, 2006 | Oct 12, 2006 | Rosetta Resources Operating LP | South Callaghan Ranch #246 | 9,400 | 47939679 |
| 627334 | Oct 11, 2006 | Oct 11, 2006 | Lewis Petro Properties, Inc. | Owen Briscoe 2147 #5 | 8,000 | 47939678 |
| 627209 | Oct 11, 2006 | Oct 11, 2006 | Hinds Petroleum, LP | Dobie #2 | 750 | 47939677 |
| 627208 | Oct 11, 2006 | Oct 11, 2006 | Hinds Petroleum, LP | Dobie #1 | 750 | 47939676 |
| 627132 | Oct 6, 2006 | Oct 6, 2006 | Chesapeake Operating, Inc. | El Gato #31 | 12,000 | 47939674 |
| 627061 | Oct 5, 2006 | Oct 5, 2006 | EOG Resources, Inc. | Billings B #7HH | 11,975 | 47939673 |
| 626890 | Oct 3, 2006 | Oct 3, 2006 | Chesapeake Operating, Inc. | Bruni Mineral Trust "A" #45 | 12,000 | 47939671 |
| 626865 | Oct 2, 2006 | Oct 2, 2006 | Killam Oil Co., Ltd. | Killam & Hurd Fee-Porcion 16 #2 | 8,500 | 47939670 |
| 626666 | Oct 2, 2006 | Oct 2, 2006 | Enterprise Products Operating LP | Rectifier: Wlo-0.0 #00WL | 330 | 47939669 |
| 626717 | Sep 29, 2006 | Sep 29, 2006 | EOG Resources, Inc. | Jaral #1 | 13,500 | 47937304 |
| 626706 | Sep 28, 2006 | Sep 28, 2006 | Rosetta Resources Operating LP | El Corazon Ranch #7 | 8,500 | 47939668 |
| 626685 | Sep 28, 2006 | Sep 28, 2006 | Blackbrush O & G, Inc. | Brask Ranch #26 | 5,800 | 47939667 |
| 626563 | Sep 27, 2006 | Sep 27, 2006 | Blackbrush O & G, Inc. | Gates Ranch 05S #6010 | 6,020 | 47939666 |
| 626560 | Sep 27, 2006 | Sep 27, 2006 | Blackbrush O & G, Inc. | Gates Ranch 05S #508 | 5,900 | 47939665 |
| 626560Amendment | Sep 27, 2006 | Sep 27, 2006 | Blackbrush O & G, Inc. | Gates Ranch "Y" #508 | 5,900 | 47939665 |
| 625577 | Sep 27, 2006 | Sep 27, 2006 | Chevron U. S. A. Inc. | Carr, Edith #8 | 10,800 | 47939643 |
| 626506 | Sep 26, 2006 | Sep 26, 2006 | Rosetta Resources Operating LP | SCR Cactus & Brush #1 | 8,700 | 47939664 |
| 626411 | Sep 22, 2006 | Sep 22, 2006 | Lewis Petro Properties, Inc. | Beasley State 97 #34 | 7,200 | 47939663 |
| 626394 | Sep 22, 2006 | Sep 22, 2006 | Lewis Petro Properties, Inc. | Beasley Welhausen State 105 #62 | 7,200 | 47939662 |
| 626393 | Sep 22, 2006 | Sep 22, 2006 | Lewis Petro Properties, Inc. | Beasley Welhausen State 105 #41 | 7,200 | 47939661 |
| 626392 | Sep 22, 2006 | Sep 22, 2006 | Lewis Petro Properties, Inc. | Beasley State 97 #63 | 7,200 | 47939660 |
| 626232 | Sep 20, 2006 | Sep 20, 2006 | Virtex Petroleum Company, Inc. | Manry 2292 #4 | 7,800 | 47939657 |
| 626232Amendment | Sep 20, 2006 | Sep 20, 2006 | Virtex Petroleum Company, Inc. | Manry 2292 #4 | 7,800 | 47939657 |
| 626229 | Sep 20, 2006 | Sep 20, 2006 | Virtex Petroleum Company, Inc. | Manry 2292 #3 | 7,800 | 47939658 |
| 626229Amendment | Sep 20, 2006 | Sep 20, 2006 | Virtex Petroleum Company, Inc. | Manry 2292 #3 | 7,800 | 47939658 |
| 626224 | Sep 20, 2006 | Sep 20, 2006 | Virtex Petroleum Company, Inc. | Manry 2292 #2 | 7,800 | 47939659 |
| 626224Amendment | Sep 20, 2006 | Sep 20, 2006 | Virtex Petroleum Company, Inc. | Manry 2292 #2 | 7,800 | 47939659 |
| 626219 | Sep 20, 2006 | Sep 20, 2006 | Virtex Petroleum Company, Inc. | Manry 2292 #1 | 7,800 | 47939656 |
| 626219Amendment | Sep 20, 2006 | Sep 20, 2006 | Virtex Petroleum Company, Inc. | Manry 2292 #1 | 7,800 | 47939656 |
| 626211 | Sep 20, 2006 | Sep 20, 2006 | Virtex Petroleum Company, Inc. | Manry-State of Texas 1138 #1 | 7,800 | 47939655 |
| 626211Amendment | Sep 20, 2006 | Sep 20, 2006 | Virtex Petroleum Company, Inc. | Manry-State of Texas 1138 #1 | 7,800 | 47939655 |
| 625857 | Sep 20, 2006 | Sep 20, 2006 | Peak Energy Corporation | Saunders 106 #4 | 7,000 | 47939653 |
| 625831 | Sep 20, 2006 | Sep 20, 2006 | Killam Oil Co., Ltd. | Killam-Hurd-McLean "121" #6 | 17,000 | 47939652 |
| 625711 | Sep 20, 2006 | Sep 20, 2006 | Chapco, Inc. | Olmitos Ranch-Gatita #1 | 10,800 | 47939645 |
| 626168 | Sep 19, 2006 | Sep 19, 2006 | Rosetta Resources Operating LP | South Callaghan Ranch #243 | 8,800 | 47939654 |
| 625679 | Sep 19, 2006 | Sep 19, 2006 | Blackbrush O & G, Inc. | Brask State 1846 #7 | 5,800 | 47939646 |
| 625985 | Sep 15, 2006 | Sep 15, 2006 | Lewis Petro Properties, Inc. | Beasley Welhausen State 99 #61 | 7,200 | 47939651 |
| 625824 | Sep 13, 2006 | Sep 13, 2006 | Blackbrush O & G, Inc. | Gates 05S 6 #1726 | 5,850 | 47939650 |
| 625687 | Sep 11, 2006 | Sep 11, 2006 | Houston Exploration Company, The | Vaquillas Ranch "3" #3 | 9,600 | 47939644 |
| 625541 | Sep 7, 2006 | Sep 7, 2006 | Lewis Petro Properties, Inc. | Owen Briscoe 1133 #4 | 7,800 | 47939642 |
| 625400 | Sep 5, 2006 | Sep 5, 2006 | Ricochet Energy, Inc. | Running "W" 598 #1 | 10,500 | 47939641 |
| 625400Amendment | Sep 5, 2006 | Sep 5, 2006 | Ricochet Energy, Inc. | State Running "W" 598 #1 | 10,500 | 47939641 |
| 625245 | Sep 1, 2006 | Sep 1, 2006 | Enterprise Products Operating LP | Rectifier: PH2-82 #2082PH | 330 | 47939640 |
| 625231 | Sep 1, 2006 | Sep 1, 2006 | Enterprise Products Operating LP | Rectifier: PH2-79 #2079PH | 330 | 47939639 |
| 623964 | Aug 28, 2006 | Aug 28, 2006 | Rosetta Resources Operating LP | South Callaghan Ranch #239 | 9,000 | 47939620 |
| 624870 | Aug 25, 2006 | Aug 25, 2006 | Conocophillips Company | Taubman #2 | 10,200 | 47939309 |