| 629408Amendment | Nov 27, 2006 | Nov 27, 2006 | Southwest Operating, Inc.-Tyler | Ferguson Unit #1 | 6,600 | 28931624 |
| 628726 | Nov 21, 2006 | Nov 21, 2006 | Anadarko E&P Company LP | Mullenax, G. #6 | 13,900 | 28931619 |
| 629177 | Nov 20, 2006 | Nov 20, 2006 | Ensight III Energy Mgmt, LLC | Clute GU 1 #4 | 11,100 | 28931622 |
| 629174 | Nov 17, 2006 | Nov 17, 2006 | Ensight III Energy Mgmt, LLC | Clute GU 1 #3 | 11,100 | 28931621 |
| 629174Amendment | Nov 17, 2006 | Nov 17, 2006 | Ensight III Energy Mgmt, LLC | Clute Gas Unit No. 1 #3 | 11,100 | 28931621 |
| 629123 | Nov 17, 2006 | Nov 17, 2006 | Diasu Oil & Gas Co., Inc. | Dot Cadenhead #C 1 | 7,000 | 28931620 |
| 628465 | Nov 13, 2006 | Nov 13, 2006 | Gastar Exploration Texas, LP | Gastar Lone Oak Ranch Unit "B" #2 | 18,000 | 28931618 |
| 628465Amendment | Nov 13, 2006 | Nov 13, 2006 | Gastar Exploration Texas, LP | Gastar Lone Oak Ranch Unit "B" #2 | 18,000 | 28931618 |
| 628465Amendment | Nov 13, 2006 | Nov 13, 2006 | Gastar Exploration Texas, LP | Gastar Lone Oak Ranch Unit "B" #2 | 18,500 | 28931618 |
| 619676 | Nov 13, 2006 | Nov 13, 2006 | Prime Operating Company | Sam Knight Unit "C" #5 | 8,995 | 28931068 |
| 628355 | Nov 10, 2006 | Nov 10, 2006 | XTO Energy Inc. | Jensen "A" #4 | 16,000 | 28931617 |
| 628468 | Nov 2, 2006 | Nov 2, 2006 | Diasu Oil & Gas Co., Inc. | Reeder #1 | 7,000 | 28931616 |
| 626382 | Oct 27, 2006 | Oct 27, 2006 | Tag Operating Company, Inc. | Sand Hill Farm "C" #2 | 7,500 | 28931553 |
| 627973 | Oct 24, 2006 | Oct 24, 2006 | Diasu Oil & Gas Co., Inc. | Henson Ranch #1 | 7,000 | 28931615 |
| 627489 | Oct 23, 2006 | Oct 23, 2006 | Sklar Exploration Company LLC | Hill, V. K. #2 | 9,600 | 28931614 |
| 627600 | Oct 17, 2006 | Oct 17, 2006 | Tristar Exploration, Inc | Warhawk #1 | 10,550 | 28931268 |
| 627521 | Oct 16, 2006 | Oct 16, 2006 | Valence Operating Company | Grizzly #4 | 15,000 | 28931613 |
| 626302 | Sep 25, 2006 | Sep 25, 2006 | Ensight III Energy Mgmt, LLC | Clute-Diehl GU 1 #4 | 11,100 | 28931612 |
| 626300 | Sep 20, 2006 | Sep 20, 2006 | Anadarko Petroleum Corporation | G. Mullenax "B" #1 | 16,000 | 28931611 |
| 625858 | Sep 13, 2006 | Sep 13, 2006 | Diasu Oil & Gas Co., Inc. | Coats Heirs #2 | 6,400 | 28931610 |
| 625336 | Sep 8, 2006 | Sep 8, 2006 | XTO Energy Inc. | Haynie Unit #1 | 15,300 | 28931354 |
| 625393 | Sep 5, 2006 | Sep 5, 2006 | Gastar Exploration Texas, LP | Williams #1 | 19,500 | 28931609 |
| 625393Amendment | Sep 5, 2006 | Sep 5, 2006 | Gastar Exploration Texas, LP | Gastar Williams #1 | 19,500 | 28931609 |
| 625393Amendment | Sep 5, 2006 | Sep 5, 2006 | Gastar Exploration Texas, LP | Gastar Williams #1 | 20,000 | 28931609 |
| 625194 | Aug 30, 2006 | Aug 30, 2006 | Anadarko Petroleum Corporation | O'Neal, G. #2 | 16,000 | 28931608 |
| 624927 | Aug 29, 2006 | Aug 29, 2006 | XTO Energy Inc. | Hull, Effie Mae #3 | 10,120 | 28931079 |
| 624875 | Aug 25, 2006 | Aug 25, 2006 | Encana Oil & Gas(usa) Inc. | F. E. Black #1 | 19,300 | 28931607 |
| 624875Amendment | Aug 25, 2006 | Aug 25, 2006 | Anadarko Petroleum Corporation | Black, F. E. #1 | 19,300 | 28931607 |
| 623815 | Aug 24, 2006 | Aug 24, 2006 | Ensight III Energy Mgmt, LLC | Barron-Hartman GU NO.1 #3 | 11,600 | 28931606 |
| 624219 | Aug 11, 2006 | Aug 11, 2006 | Barrow-Shaver Resources Co. | Hammond #1 | 7,000 | 28931605 |
| 624152 | Aug 10, 2006 | Aug 10, 2006 | Diasu Oil & Gas Co., Inc. | Harris, Bobby Ray #1 | 7,000 | 28931604 |
| 624151 | Aug 10, 2006 | Aug 10, 2006 | Diasu Oil & Gas Co., Inc. | Dot Cadenhead #5 | 7,000 | 28931603 |
| 624150 | Aug 10, 2006 | Aug 10, 2006 | Diasu Oil & Gas Co., Inc. | Dot Cadenhead #4 | 7,000 | 28931602 |
| 623205 | Aug 2, 2006 | Aug 2, 2006 | XTO Energy Inc. | Foley Gas Unit #2 | 15,300 | 28931598 |
| 623521 | Aug 1, 2006 | Aug 1, 2006 | Valence Operating Company | Lewis "B" #16 | 15,000 | 28931599 |
| 623155 | Aug 1, 2006 | Aug 1, 2006 | XTO Energy Inc. | Foley Gas Unit #1 | 15,200 | 28931596 |
| 622077 | Aug 1, 2006 | Aug 1, 2006 | Valence Operating Company | Black #2 | 15,000 | 28931589 |
| 623399 | Jul 28, 2006 | Jul 28, 2006 | Chesapeake Operating, Inc. | Baldwin #2 | 16,000 | 28931597 |
| 623001 | Jul 24, 2006 | Jul 24, 2006 | Dallas Production, Inc. | Smith, Shelby #2 | 14,000 | 28931595 |
| 622603 | Jul 21, 2006 | Jul 21, 2006 | Diasu Oil & Gas Co., Inc. | Copeland, John #1 | 7,000 | 28931592 |
| 622732 | Jul 18, 2006 | Jul 18, 2006 | Chesapeake Operating, Inc. | Baldwin #1 | 16,000 | 28931594 |
| 622732Amendment | Jul 18, 2006 | Jul 18, 2006 | Chesapeake Operating, Inc. | Baldwin #1 | 16,000 | 28931594 |
| 622605 | Jul 14, 2006 | Jul 14, 2006 | Anadarko Petroleum Corporation | Pollard, Jeanette #7 | 15,000 | 28931593 |
| 622301 | Jul 14, 2006 | Jul 14, 2006 | XTO Energy Inc. | Helmcamp #2 | 17,500 | 28931591 |
| 622426 | Jul 13, 2006 | Jul 13, 2006 | Burlington Resources O & G Co LP | Burlington Swift #1 | 20,600 | 28931590 |
| 622426Amendment | Jul 13, 2006 | Jul 13, 2006 | Burlington Resources O & G Co LP | Burlington Swift #1 | 20,600 | 28931590 |
| 621980 | Jul 3, 2006 | Jul 3, 2006 | Diasu Oil & Gas Co., Inc. | King-Cadenhead #1 | 7,000 | 28931588 |
| 621907 | Jun 30, 2006 | Jun 30, 2006 | Barrow-Shaver Resources Co. | Miller, Eva Mae #201 | 7,000 | 28931587 |
| 621818 | Jun 29, 2006 | Jun 29, 2006 | Diasu Oil & Gas Co., Inc. | Anderson-Bing #1 | 7,000 | 28931586 |
| 621625 | Jun 27, 2006 | Jun 27, 2006 | Marathon Oil Company | Pinnacle #6 | 15,000 | 28931585 |
| 621464 | Jun 22, 2006 | Jun 22, 2006 | Anadarko Petroleum Corporation | M. G. Burleson "A" #9 | 15,000 | 28931584 |
| 621459 | Jun 22, 2006 | Jun 22, 2006 | Anadarko Petroleum Corporation | M. G. Burleson "A" #8 | 16,000 | 28931583 |
| 620989 | Jun 15, 2006 | Jun 15, 2006 | Barrow-Shaver Resources Co. | Heil #1 | 7,000 | 28931582 |
| 620942 | Jun 14, 2006 | Jun 14, 2006 | LTS Oil & Gas | Jimmy Hill Gas Unit #1 | 9,600 | 28931231 |
| 620942Amendment | Jun 14, 2006 | Jun 14, 2006 | Tristar Exploration, Inc | Jimmy Hill Gas Unit #1 | 10,043 | 28931231 |
| 620399 | Jun 12, 2006 | Jun 12, 2006 | Bowles Energy Inc | Lacey, Robert a Trust #1 | 4,000 | 28930645 |
| 620143 | Jun 9, 2006 | Jun 9, 2006 | Wortham Oil & Gas | Ellison #1H | 7,450 | 28930389 |
| 620243 | Jun 1, 2006 | Jun 1, 2006 | Anadarko Petroleum Corporation | Hodges "A" #15 | 15,000 | 28931581 |
| 620189 | May 31, 2006 | May 31, 2006 | Ridge Petroleum Inc. | Snell, John #1 | 8,500 | 28931580 |
| 619918 | May 25, 2006 | May 25, 2006 | Barrow-Shaver Resources Co. | Coldiron #2 | 7,000 | 28931579 |
| 619918Amendment | May 25, 2006 | May 25, 2006 | Barrow-Shaver Resources Co. | Coldiron #2 | 7,000 | 28931579 |
| 619580 | May 19, 2006 | May 19, 2006 | Anadarko Petroleum Corporation | Jeanette Pollard #5 | 15,000 | 28931578 |
| 619499 | May 18, 2006 | May 18, 2006 | Diasu Oil & Gas Co., Inc. | Anderson, C. #1 | 7,000 | 28931577 |
| 619111 | May 11, 2006 | May 11, 2006 | Gastar Exploration Texas, LP | Gastar Donelson #2 | 15,000 | 28931518 |
| 618947 | May 9, 2006 | May 9, 2006 | Anadarko Petroleum Corporation | Glanton, Theresa "A" #2 | 14,000 | 28931576 |
| 618947Amendment | May 9, 2006 | May 9, 2006 | Anadarko Petroleum Corporation | Glanton, Theresa "A" #2 | 16,000 | 28931576 |
| 618761 | May 5, 2006 | May 5, 2006 | Chesapeake Operating, Inc. | Dubois #1 | 18,000 | 28931575 |
| 618598 | May 3, 2006 | May 3, 2006 | Barrow-Shaver Resources Co. | Miller, Eva Mae #1 | 7,000 | 28931574 |
| 618515 | May 1, 2006 | May 1, 2006 | Anadarko Petroleum Corporation | O'Neal, G. #1 | 15,000 | 28931573 |
| 614756 | Apr 28, 2006 | Apr 28, 2006 | Anadarko Petroleum Corporation | Savage #4 | 15,000 | 28931155 |
| 618318 | Apr 27, 2006 | Apr 27, 2006 | Prime Operating Company | Hopson, W. T. #1N | 6,400 | 28900220 |
| 618318Amendment | Apr 27, 2006 | Apr 27, 2006 | Sandel Operating Company | Hopson, W. T. #1N | 6,400 | 28900220 |
| 617936 | Apr 20, 2006 | Apr 20, 2006 | Gastar Exploration Texas, LP | Gastar Wildman Trust #2 | 19,500 | 28931572 |
| 617740 | Apr 19, 2006 | Apr 19, 2006 | Barrow-Shaver Resources Co. | Waters-Perry et al 1 #1 | 7,000 | 28900346 |
| 617740Amendment | Apr 19, 2006 | Apr 19, 2006 | Barrow-Shaver Resources Co. | Waters-Perry #1 | 7,000 | 28900346 |
| 615554 | Apr 19, 2006 | Apr 19, 2006 | Roberts & Hammack, Inc. | Frison #1 | 7,000 | 28931567 |
| 617758 | Apr 18, 2006 | Apr 18, 2006 | Valence Operating Company | Black #3 | 15,000 | 28931571 |
| 617424 | Apr 18, 2006 | Apr 18, 2006 | Anadarko Petroleum Corporation | Pollard, Jeanette #6 | 15,000 | 28931569 |
| 617602 | Apr 14, 2006 | Apr 14, 2006 | Diasu Oil & Gas Co., Inc. | Dot Cadenhead #3 | 7,000 | 28931570 |
| 616702 | Apr 3, 2006 | Apr 3, 2006 | Encana Oil & Gas(usa) Inc. | Amanda Rose Unit #1 | 20,000 | 28931568 |
| 616702Amendment | Apr 3, 2006 | Apr 3, 2006 | Encana Oil & Gas(usa) Inc. | Amanda Rose Unit #1 | 20,000 | 28931568 |
| 616533 | Mar 28, 2006 | Mar 28, 2006 | Diasu Oil & Gas Co., Inc. | Coats Heirs #1 | 6,400 | 28931566 |
| 616263 | Mar 28, 2006 | Mar 28, 2006 | Valence Operating Company | Black #8 | 15,000 | 28931565 |
| 616413 | Mar 24, 2006 | Mar 24, 2006 | Barrow-Shaver Resources Co. | Reeder, W.B. #1 | 7,000 | 28931564 |
| 615703 | Mar 13, 2006 | Mar 13, 2006 | Diasu Oil & Gas Co., Inc. | Cadenhead #3 | 7,000 | 28931563 |
| 615252 | Mar 13, 2006 | Mar 13, 2006 | XTO Energy Inc. | Holmes "S" #2 | 9,604 | 28931296 |
| 614860 | Mar 3, 2006 | Mar 3, 2006 | XTO Energy Inc. | Holmes "S" #6 | 15,500 | 28931562 |
| 614421 | Feb 17, 2006 | Feb 17, 2006 | Diasu Oil & Gas Co., Inc. | Dot Cadenhead #2 | 7,000 | 28931561 |
| 613681 | Feb 14, 2006 | Feb 14, 2006 | Valence Operating Company | Lewis "B" #15 | 15,000 | 28931557 |
| 614088 | Feb 13, 2006 | Feb 13, 2006 | Anadarko Petroleum Corporation | Savage #7 | 15,000 | 28931560 |
| 614016 | Feb 10, 2006 | Feb 10, 2006 | XTO Energy Inc. | Gail King #23HH | 18,500 | 28931559 |
| 613997 | Feb 10, 2006 | Feb 10, 2006 | Anadarko Petroleum Corporation | Burleson, M. G. "A" #6 | 15,000 | 28931558 |
| 613709 | Feb 7, 2006 | Feb 7, 2006 | Anadarko Petroleum Corporation | Hodges "A" #18 | 15,000 | 28931556 |
| 613690 | Feb 7, 2006 | Feb 7, 2006 | Anadarko Petroleum Corporation | Jeanette Pollard #4 | 14,000 | 28931555 |
| 613552 | Feb 3, 2006 | Feb 3, 2006 | Anadarko Petroleum Corporation | Holloway "A" #4 | 17,800 | 28931554 |
| 613051 | Jan 31, 2006 | Jan 31, 2006 | Tag Operating Company, Inc. | Sand Hill Farm "C" #1 | 7,000 | 28931553 |
| 613030 | Jan 26, 2006 | Jan 26, 2006 | Diasu Oil & Gas Co., Inc. | Sawmill #1 | 7,000 | 28931551 |
| 613010 | Jan 25, 2006 | Jan 25, 2006 | Diasu Oil & Gas Co., Inc. | Cadenhead #2 | 7,000 | 28931552 |
| 612241 | Jan 12, 2006 | Jan 12, 2006 | SDG Operating Company, Inc | West No. 1 #1 | 7,500 | 28931550 |
| 612241Amendment | Jan 12, 2006 | Jan 12, 2006 | Barrow-Shaver Resources Co. | West #1 | 7,000 | 28931550 |