| 629841 | Dec 1, 2006 | Dec 1, 2006 | Devon Energy Production Co, L.P. | Jennings #8850535752 | 14,000 |
| 629786 | Dec 1, 2006 | Dec 1, 2006 | Devon Energy Production Co, L.P. | Jennings #8950535751 | 13,500 |
| 629726 | Nov 30, 2006 | Nov 30, 2006 | Chesapeake Operating, Inc. | Vasquez, Romeo J. #850535750 | 12,000 |
| 629479 | Nov 30, 2006 | Nov 30, 2006 | Pogo Producing Company | Benavides Trust #1250535744 | 11,700 |
| 629622 | Nov 29, 2006 | Nov 29, 2006 | Chesapeake Operating, Inc. | Cuellar, J. Vela #450535749 | 12,000 |
| 629605 | Nov 29, 2006 | Nov 29, 2006 | Laredo Energy | Ramirez et Al #150535748 | 13,000 |
| 629605Amendment | Nov 29, 2006 | Nov 29, 2006 | Laredo Energy | Ramirez et Al #150535748 | 14,000 |
| 629605Amendment | Nov 29, 2006 | Nov 29, 2006 | El Paso E&P Zapata, L.P. | Ramirez et Al #150535748 | 16,000 |
| 629551 | Nov 28, 2006 | Nov 28, 2006 | U.S. Enercorp, Ltd. | Dolen #150535745 | 13,000 |
| 629551Amendment | Nov 28, 2006 | Nov 28, 2006 | U.S. Enercorp, Ltd. | Dolen #150535745 | 14,000 |
| 629551Amendment | Nov 28, 2006 | Nov 28, 2006 | U.S. Enercorp, Ltd. | Dolen #150535745 | 16,000 |
| 629551Amendment | Nov 28, 2006 | Nov 28, 2006 | U.S. Enercorp, Ltd. | Dolen #150535745 | 16,000 |
| 629480 | Nov 28, 2006 | Nov 28, 2006 | Pogo Producing Company | F. G. G. Ranches #450535743 | 13,000 |
| 629277 | Nov 28, 2006 | Nov 28, 2006 | Acock Operating Limited | Salinas #250535746 | 17,000 |
| 628985 | Nov 28, 2006 | Nov 28, 2006 | Conocophillips Company | McMurrey, Wm. #6450535747 | 10,575 |
| 629369 | Nov 21, 2006 | Nov 21, 2006 | Chesapeake Operating, Inc. | Cuellar Heirs B #150535742 | 12,000 |
| 628138 | Nov 21, 2006 | Nov 21, 2006 | Chesapeake Operating, Inc. | Laurel, O. M. Estate #1450535720 | 14,000 |
| 629265 | Nov 20, 2006 | Nov 20, 2006 | Chesapeake Operating, Inc. | Benavides, Alejo #350535741 | 12,000 |
| 629265Amendment | Nov 20, 2006 | Nov 20, 2006 | Chesapeake Operating, Inc. | Benavides, Alejo #350535741 | 12,000 |
| 629127 | Nov 17, 2006 | Nov 17, 2006 | Laredo Energy IV, L.P. | San Fernando #450535740 | 10,500 |
| 629127Amendment | Nov 17, 2006 | Nov 17, 2006 | Laredo Energy | San Fernando #450535740 | 10,500 |
| 629097 | Nov 16, 2006 | Nov 16, 2006 | EOG Resources, Inc. | Marshall, S.G. #32HH50535739 | 12,000 |
| 629097Amendment | Nov 16, 2006 | Nov 16, 2006 | EOG Resources, Inc. | Marshall, S. G. #32HH50535739 | 12,000 |
| 628507 | Nov 13, 2006 | Nov 13, 2006 | Enterprise Products Operating LP | Rectifier Cta 5 #C 5TA50535737 | 430 |
| 628868 | Nov 10, 2006 | Nov 10, 2006 | Conocophillips Company | Villarreal Gutierrez GU #350535738 | 11,100 |
| 628841 | Nov 10, 2006 | Nov 10, 2006 | Killam Oil Co., Ltd. | M. G. Garza Gas Unit #450535736 | 9,300 |
| 628776 | Nov 9, 2006 | Nov 9, 2006 | Chesapeake Operating, Inc. | Delia Vasquez #650535735 | 12,000 |
| 628760 | Nov 9, 2006 | Nov 9, 2006 | Houston Exploration Company, The | Dominguez #750535734 | 10,000 |
| 628754 | Nov 9, 2006 | Nov 9, 2006 | Houston Exploration Company, The | Dominguez #650535733 | 10,400 |
| 628754Amendment | Nov 9, 2006 | Nov 9, 2006 | Houston Exploration Company, The | Dominguez #650535733 | 10,400 |
| 628686 | Nov 7, 2006 | Nov 7, 2006 | Houston Exploration Company, The | Bernardo Gas Unit #1650535732 | 12,000 |
| 628641 | Nov 7, 2006 | Nov 7, 2006 | Newfield Exploration Company | Alexander #350535731 | 7,000 |
| 628634 | Nov 7, 2006 | Nov 7, 2006 | Newfield Exploration Company | Florez, Teresa L. #150535730 | 7,000 |
| 628596 | Nov 6, 2006 | Nov 6, 2006 | Conocophillips Company | Volpe #250535729 | 10,100 |
| 628547 | Nov 6, 2006 | Nov 6, 2006 | Pogo Producing Company | Rathmell, J. G. #3050535728 | 11,300 |
| 628547Amendment | Nov 6, 2006 | Nov 6, 2006 | Pogo Producing Company | Rathmell, J. G. #3050535728 | 11,300 |
| 626042 | Nov 3, 2006 | Nov 3, 2006 | Houston Exploration Company, The | Maria Cuellar #1950535699 | 10,000 |
| 628404 | Nov 1, 2006 | Nov 1, 2006 | Chevron U. S. A. Inc. | Marshall, S. G. #3050535727 | 11,900 |
| 628369 | Nov 1, 2006 | Nov 1, 2006 | Chevron U. S. A. Inc. | G. B. Vergara #1050535726 | 11,000 |
| 628318 | Oct 31, 2006 | Oct 31, 2006 | Peoples Energy Prod.-TX, L.P. | Jennings, J.D. #48750535725 | 2,300 |
| 628315 | Oct 31, 2006 | Oct 31, 2006 | Peoples Energy Prod.-TX, L.P. | Jennings, J.D. #48650535724 | 2,300 |
| 628256 | Oct 31, 2006 | Oct 31, 2006 | Pogo Producing Company | Haynes, L. #17150535723 | 10,900 |
| 625464 | Oct 31, 2006 | Oct 31, 2006 | Chesapeake Operating, Inc. | Zapata Townsite #350535680 | 12,000 |
| 625464Amendment | Oct 31, 2006 | Oct 31, 2006 | Chesapeake Operating, Inc. | Zapata Townsite #350535680 | 12,000 |
| 628257 | Oct 30, 2006 | Oct 30, 2006 | Pogo Producing Company | Haynes, L #17050535722 | 11,100 |
| 628248 | Oct 30, 2006 | Oct 30, 2006 | Chesapeake Operating, Inc. | Amoco Fee #850535721 | 14,000 |
| 627085 | Oct 30, 2006 | Oct 30, 2006 | Conocophillips Company | Serafin #650535708 | 12,529 |
| 628133 | Oct 27, 2006 | Oct 27, 2006 | Ricochet Energy, Inc. | Salinas, G. G. #150535719 | 9,500 |
| 628073 | Oct 26, 2006 | Oct 26, 2006 | Conocophillips Company | Bustamante CP #100650535718 | 350 |
| 626805 | Oct 25, 2006 | Oct 25, 2006 | Chesapeake Operating, Inc. | Ranchito "a" Gas Unit #350535703 | 12,000 |
| 626805Amendment | Oct 25, 2006 | Oct 25, 2006 | Chesapeake Operating, Inc. | Ranchito "a" Gas Unit #350535703 | 12,000 |
| 627934 | Oct 23, 2006 | Oct 23, 2006 | Chesapeake Operating, Inc. | Vasquez, Delia #550535717 | 12,000 |
| 627925 | Oct 23, 2006 | Oct 23, 2006 | Chesapeake Operating, Inc. | Laurel, O. M. Estate #1550535716 | 14,000 |
| 627685 | Oct 20, 2006 | Oct 20, 2006 | Conocophillips Company | Las Palomas #150535061 | 14,950 |
| 627788 | Oct 19, 2006 | Oct 19, 2006 | Peoples Energy Prod.-TX, L.P. | Trevino "B" #350532652 | 10,000 |
| 627785 | Oct 19, 2006 | Oct 19, 2006 | Peoples Energy Prod.-TX, L.P. | Trevino "B" #250532265 | 10,300 |
| 627243 | Oct 18, 2006 | Oct 18, 2006 | United Resources LP | Galo #250535713 | 12,500 |
| 627690 | Oct 17, 2006 | Oct 17, 2006 | Houston Exploration Company, The | Bustamante Gas Unit 1 #1250535715 | 15,000 |
| 627603 | Oct 17, 2006 | Oct 17, 2006 | EOG Resources, Inc. | Slator Ranch #S 350535714 | 12,100 |
| 626157 | Oct 11, 2006 | Oct 11, 2006 | Conocophillips Company | Cassin, Edward #850535696 | 12,600 |
| 625889 | Oct 11, 2006 | Oct 11, 2006 | Houston Exploration Company, The | Bernardo Gas Unit #1550535690 | 12,000 |
| 627263 | Oct 10, 2006 | Oct 10, 2006 | Chesapeake Operating, Inc. | Delia Vasquez #750535712 | 12,000 |
| 627174 | Oct 6, 2006 | Oct 6, 2006 | Chesapeake Operating, Inc. | Ramon "C" #150535711 | 12,000 |
| 627154 | Oct 6, 2006 | Oct 6, 2006 | Pogo Producing Company | Haynes, L. #16850535710 | 10,200 |
| 627150 | Oct 6, 2006 | Oct 6, 2006 | Pogo Producing Company | Haynes, L #16750535709 | 10,200 |
| 626676 | Oct 5, 2006 | Oct 5, 2006 | Pogo Producing Company | Haynes, L. #16650535706 | 11,300 |
| 626676Amendment | Oct 5, 2006 | Oct 5, 2006 | Pogo Producing Company LLC | Haynes, L. #16650535706 | 11,300 |
| 625720 | Oct 5, 2006 | Oct 5, 2006 | Conocophillips Company | Jennings Ranch C #6250535689 | 13,770 |
| 626943 | Oct 4, 2006 | Oct 4, 2006 | Hughes, Dan A. Company, L.P. | Fulbright, J. E. "G" #502ST50533784 | 14,000 |
| 626943Amendment | Oct 4, 2006 | Oct 4, 2006 | Hughes, Dan A. Company, L.P. | Fulbright, J. E. "G" #502ST50533784 | 12,726 |
| 625406 | Oct 2, 2006 | Oct 2, 2006 | Houston Exploration Company, The | Leonardo #4550535677 | 11,100 |
| 626803 | Sep 29, 2006 | Sep 29, 2006 | EOG Resources, Inc. | Slator Ranch #T 250535705 | 12,500 |
| 626802 | Sep 29, 2006 | Sep 29, 2006 | EOG Resources, Inc. | Slator Ranch #W 350535704 | 12,500 |
| 626593 | Sep 27, 2006 | Sep 27, 2006 | Chevron U. S. A. Inc. | Vidaurri-State Gas Unit 3 #150535702 | 9,000 |
| 626578 | Sep 26, 2006 | Sep 26, 2006 | Chevron U. S. A. Inc. | J. C. Martin #1550535701 | 11,400 |
| 626017 | Sep 22, 2006 | Sep 22, 2006 | Pogo Producing Company | Benavides Trust #1150535698 | 9,500 |
| 625181 | Sep 22, 2006 | Sep 22, 2006 | Houston Exploration Company, The | Daisy #650535676 | 12,100 |
| 626349 | Sep 21, 2006 | Sep 21, 2006 | EOG Resources, Inc. | I. C. Uribe GU #450533447 | 13,500 |
| 626341 | Sep 21, 2006 | Sep 21, 2006 | Laredo Energy | Varela #150535700 | 11,500 |
| 625995 | Sep 20, 2006 | Sep 20, 2006 | Conocophillips Company | De Barberio #650535697 | 10,750 |
| 625995Amendment | Sep 20, 2006 | Sep 20, 2006 | Conocophillips Company | De Barberio #650535697 | 10,750 |
| 626095 | Sep 18, 2006 | Sep 18, 2006 | Legend Natural Gas II, LP | Vela, R. #150535694 | 15,000 |
| 626093 | Sep 18, 2006 | Sep 18, 2006 | Legend Natural Gas II, LP | Whittier #450535695 | 15,000 |
| 626059 | Sep 18, 2006 | Sep 18, 2006 | Wagner Oil Company | Martinez, Mercuiro #450535692 | 11,500 |
| 625977 | Sep 15, 2006 | Sep 15, 2006 | Wagner Oil Company | Slator Ranch #3950535691 | 11,500 |
| 624754 | Sep 15, 2006 | Sep 15, 2006 | Houston Exploration Company, The | Ramirez, Abel #1250535666 | 9,500 |
| 624725 | Sep 14, 2006 | Sep 14, 2006 | Chesapeake Operating, Inc. | Alexander #1150535665 | 14,000 |
| 624263 | Sep 14, 2006 | Sep 14, 2006 | Pogo Producing Company | Haynes, L. #16350535660 | 11,100 |
| 624262 | Sep 14, 2006 | Sep 14, 2006 | Pogo Producing Company | Haynes, L. #16450535659 | 11,100 |
| 624262Amendment | Sep 14, 2006 | Sep 14, 2006 | Pogo Producing Company LLC | Haynes, L. #16450535659 | 11,100 |
| 625718 | Sep 11, 2006 | Sep 11, 2006 | Houston Exploration Company, The | Amando Garza Trust #250535688 | 10,500 |
| 625714 | Sep 11, 2006 | Sep 11, 2006 | Houston Exploration Company, The | Amando Garza Trust #150535687 | 10,500 |
| 625677 | Sep 8, 2006 | Sep 8, 2006 | Houston Exploration Company, The | Amando #250535686 | 10,500 |
| 625668 | Sep 8, 2006 | Sep 8, 2006 | Chesapeake Operating, Inc. | RMT #1050535685 | 12,000 |
| 625599 | Sep 7, 2006 | Sep 7, 2006 | Reichmann Petroleum Corp. | Resendez #350535684 | 12,500 |
| 625482 | Sep 6, 2006 | Sep 6, 2006 | Wagner Oil Company | Slator Ranch #3750535682 | 12,500 |
| 625479 | Sep 6, 2006 | Sep 6, 2006 | EOG Resources, Inc. | Slator Ranch #S 450535683 | 12,000 |
| 625478 | Sep 6, 2006 | Sep 6, 2006 | EOG Resources, Inc. | Slator Ranch #V 350535681 | 12,500 |
| 625450 | Sep 6, 2006 | Sep 6, 2006 | Chesapeake Operating, Inc. | Delia Vasquez #450535679 | 12,000 |
| 625414 | Sep 5, 2006 | Sep 5, 2006 | Laredo Energy | Benavides "A" #650535678 | 11,000 |