| 527988 | Apr 7, 2003 | Apr 7, 2003 | Patrick, Joe Ben | Patrick "M" #507734858 | 1,950 |
| 530178 | Apr 4, 2003 | Apr 4, 2003 | Seelye, William L. | Saner, J C "A" #507734856 | 2,000 |
| 530109 | Mar 31, 2003 | Mar 31, 2003 | Hess, Jerry Operating Co. | Lutz #207734855 | 6,850 |
| 529907 | Mar 28, 2003 | Mar 28, 2003 | Allen, C. L. (Doie) | Byers Bros. #407734854 | 1,900 |
| 529646 | Mar 17, 2003 | Mar 17, 2003 | Lane Operating Company | King #107734853 | 6,100 |
| 528997 | Mar 5, 2003 | Mar 5, 2003 | Aztec Oil & Gas Company "A" | Boddy, J. P. #2007734852 | 2,000 |
| 528996 | Mar 5, 2003 | Mar 5, 2003 | Aztec Oil & Gas Company "A" | Boddy, J. P. #1807734851 | 2,000 |
| 526776 | Jan 3, 2003 | Jan 3, 2003 | Sabre Operating, Inc. | Scott, Lowell #107731673 | 6,430 |
| 526583 | Dec 30, 2002 | Dec 30, 2002 | Muirfield Exploration, Ltd. | Taylor -A- #6407734850 | 2,000 |
| 525212 | Dec 18, 2002 | Dec 18, 2002 | Muirfield Exploration, Ltd. | Firestone, Tom #3607734848 | 2,000 |
| 525309 | Dec 6, 2002 | Dec 6, 2002 | Lane Operating Company | Roch #107734849 | 6,700 |
| 525980 | Dec 5, 2002 | Dec 5, 2002 | Exco Resources, Inc. | Lutz-Brown Unit 63 #107734699 | 6,100 |
| 525045 | Oct 29, 2002 | Oct 29, 2002 | Lane Operating Company | Phelps-Roch Unit #107734847 | 4,000 |
| 523506 | Sep 20, 2002 | Sep 20, 2002 | Lyon Operating Company Inc.(iii) | Hill #107720364 | 6,600 |
| 523104 | Aug 29, 2002 | Aug 29, 2002 | Bridwell Oil Co. | Bridwell River Ranch #7607734668 | 5,050 |
| 522625 | Aug 8, 2002 | Aug 8, 2002 | 3-T Exploration, Inc. | Scaling East #207734846 | 4,000 |
| 522502 | Aug 8, 2002 | Aug 8, 2002 | Muirfield Exploration, Ltd. | Taylor -A- #6307734895 | 2,000 |
| 522129 | Jul 23, 2002 | Jul 23, 2002 | Lane Operating Company | Gordon #107734845 | 6,700 |
| 521601 | Jul 11, 2002 | Jul 11, 2002 | Muirfield Exploration, Ltd. | Taylor -A- #5607720073 | 1,100 |
| 521563 | Jul 9, 2002 | Jul 9, 2002 | Alon USA, LP | 501+04 #13ER07734844 | 390 |
| 521530 | Jul 5, 2002 | Jul 5, 2002 | Muirfield Exploration, Ltd. | Firestone, Tom #3507734843 | 2,000 |
| 519944 | May 16, 2002 | May 16, 2002 | Corda Corporation | Stell #207734842 | 6,600 |
| 519206 | Apr 19, 2002 | Apr 19, 2002 | Lane Operating Company | Dillard #107734841 | 4,700 |
| 518908 | Apr 10, 2002 | Apr 10, 2002 | Patrick, Joe Ben | Patrick "M" #407734840 | 1,950 |
| 518396 | Mar 19, 2002 | Mar 19, 2002 | Lindemann, James D. | Mayfield #107734839 | 4,999 |
| 518034 | Mar 5, 2002 | Mar 5, 2002 | Lane Operating Company | Edwards C #307734825 | 5,900 |
| 518013 | Mar 1, 2002 | Mar 1, 2002 | Muirfield Exploration, Ltd. | Taylor "A" #6207734838 | 2,000 |
| 517428 | Feb 11, 2002 | Feb 11, 2002 | Rogers Drilling Co. | Lindeman #1E07734837 | 6,500 |
| 515513 | Nov 20, 2001 | Nov 20, 2001 | Texakoma Oil & Gas Corporation | Texakoma-Rater 17 #407734835 | 7,000 |
| 515455 | Nov 20, 2001 | Nov 20, 2001 | Bridwell Oil Co. | Bridwell River Ranch #8607734834 | 4,800 |
| 514713 | Oct 25, 2001 | Oct 25, 2001 | Muirfield Exploration, Ltd. | Firestone, Tom #3407734833 | 2,000 |
| 514611 | Oct 19, 2001 | Oct 19, 2001 | Bridwell Oil Co. | Scaling Ranch -H- #407730707 | 4,500 |
| 514611Amendment | Oct 19, 2001 | Oct 19, 2001 | Bridwell Oil Co. | Scaling Ranch -H- #407730707 | 5,480 |
| 513798 | Sep 27, 2001 | Sep 27, 2001 | Lane Operating Company | Roe-Mayfield Unit #107734831 | 4,700 |
| 513918 | Sep 26, 2001 | Sep 26, 2001 | Lane Operating Company | Cox #107734832 | 4,700 |
| 513675 | Sep 21, 2001 | Sep 21, 2001 | Bridwell Oil Co. | Bridwell River Ranch #7507734632 | 5,300 |
| 513330 | Sep 6, 2001 | Sep 6, 2001 | Bridwell Oil Co. | Bridwell River Ranch #8507734745 | 5,350 |
| 512064 | Aug 20, 2001 | Aug 20, 2001 | 3-T Exploration, Inc. | Scaling East #107734830 | 4,000 |
| 511197 | Jul 13, 2001 | Jul 13, 2001 | Muirfield Exploration, Ltd. | Firestone, Tom #3207734828 | 2,000 |
| 511196 | Jul 13, 2001 | Jul 13, 2001 | Muirfield Exploration, Ltd. | Firestone, Tom #3307734827 | 2,000 |
| 511331 | Jul 11, 2001 | Jul 11, 2001 | Texakoma Oil & Gas Corporation | Texakoma-Rater 17 #207734829 | 7,200 |
| 510899 | Jul 9, 2001 | Jul 9, 2001 | Cholla Petroleum, Inc. | Roe #207734785 | 6,700 |
| 509198 | Jul 9, 2001 | Jul 9, 2001 | Fagadau Energy Corporation | Phillips, Grace #107709827 | 7,515 |
| 511135 | Jul 6, 2001 | Jul 6, 2001 | Muirfield Exploration, Ltd. | Thornberry #3407734826 | 2,000 |
| 510221 | Jun 14, 2001 | Jun 14, 2001 | Lane Operating Company | Edwards C #307734825 | 6,700 |
| 510221Amendment | Jun 14, 2001 | Jun 14, 2001 | Lane Operating Company | Edwards C #307734825 | 6,700 |
| 509566 | Jun 6, 2001 | Jun 6, 2001 | Rising Star Energy, L.L.C. | Myers, Viola Estate #1107732470 | 6,100 |
| 509645 | May 31, 2001 | May 31, 2001 | 3-T Exploration, Inc. | Scaling West #107734824 | 3,850 |
| 509126 | May 17, 2001 | May 17, 2001 | Four Sevens Oil Co., Ltd. | Scaling Ranch B #107734819 | 7,100 |
| 509125 | May 17, 2001 | May 17, 2001 | Four Sevens Oil Co., Ltd. | Scaling Ranch A #107734818 | 7,100 |
| 508630 | May 10, 2001 | May 10, 2001 | Taylor, Ben J. Inc. | Aerni #107734489 | 6,500 |
| 507540 | May 9, 2001 | May 9, 2001 | Fagadau Energy Corporation | Phillips, F. R. #101407731092 | 7,435 |
| 508104 | Apr 30, 2001 | Apr 30, 2001 | Rising Star Energy, L.L.C. | Brown, Jack "A" #207732188 | 5,700 |
| 507880 | Apr 17, 2001 | Apr 17, 2001 | Muirfield Exploration, Ltd. | Firestone, Tom #3107734823 | 2,000 |
| 507595 | Apr 10, 2001 | Apr 10, 2001 | Texakoma Oil & Gas Corporation | Texahoma-Rater 17 #107733154 | 7,200 |
| 506185 | Mar 7, 2001 | Mar 7, 2001 | Texakoma Oil & Gas Corporation | Texakoma-Rater "A" #107734075 | 7,200 |
| 504720 | Feb 5, 2001 | Feb 5, 2001 | Biehl Oil Services LLC | Scott #A 107734822 | 4,600 |
| 504720Amendment | Feb 5, 2001 | Feb 5, 2001 | Interstate Explorations LLC | Scott #A 107734822 | 6,900 |
| 504127 | Jan 24, 2001 | Jan 24, 2001 | Lane Operating Company | Roe-Polhemus Unit #107734821 | 6,700 |
| 504149 | Jan 19, 2001 | Jan 19, 2001 | Muirfield Exploration, Ltd. | Taylor Estate, Etal #4707734820 | 2,000 |
| 503168 | Dec 21, 2000 | Dec 21, 2000 | U. S. Operating, Inc. | Patterson "A" #1RE07733645 | 8,000 |
| 503168Amendment | Dec 21, 2000 | Dec 21, 2000 | U. S. Operating, Inc. | Patterson "A" #1RE07733645 | 7,000 |
| 502268 | Nov 29, 2000 | Nov 29, 2000 | U. S. Operating, Inc. | Patterson #1RE07730061 | 8,000 |
| 502268Amendment | Nov 29, 2000 | Nov 29, 2000 | U. S. Operating, Inc. | Patterson #1RE07730061 | 7,000 |
| 502257 | Nov 21, 2000 | Nov 21, 2000 | Four Sevens Oil Co., Ltd. | Scaling Ranch B #107734819 | 7,100 |
| 502257Amendment | Nov 21, 2000 | Nov 21, 2000 | Four Sevens Oil Co., Ltd. | Scaling Ranch B #107734819 | 7,100 |
| 502256 | Nov 21, 2000 | Nov 21, 2000 | Four Sevens Oil Co., Ltd. | Scaling Ranch A #107734818 | 7,100 |
| 502256Amendment | Nov 21, 2000 | Nov 21, 2000 | Four Sevens Oil Co., Ltd. | Scaling Ranch A #107734818 | 7,100 |
| 499773 | Sep 22, 2000 | Sep 22, 2000 | Allen, C. L. (Doie) | Byers Bros. #307734817 | 1,900 |
| 499773Amendment | Sep 22, 2000 | Sep 22, 2000 | Allen, C. L. (Doie) | Byers Bros. #307734817 | 1,900 |
| 499772 | Sep 22, 2000 | Sep 22, 2000 | Allen, C. L. (Doie) | Byers Bros. #207734816 | 1,900 |
| 499772Amendment | Sep 22, 2000 | Sep 22, 2000 | Allen, C. L. (Doie) | Byers Bros. #207734816 | 1,900 |
| 499883 | Sep 21, 2000 | Sep 21, 2000 | Muirfield Exploration, Ltd. | Firestone, Tom #2907734815 | 2,000 |
| 499748 | Sep 18, 2000 | Sep 18, 2000 | Muirfield Exploration, Ltd. | Taylor Estate, Etal #4607734814 | 2,000 |
| 499447 | Sep 12, 2000 | Sep 12, 2000 | Bridwell Oil Co. | Bridwell River Ranch #6007734381 | 5,480 |
| 498496 | Aug 30, 2000 | Aug 30, 2000 | Lufkin Production Company Inc. | Henderson, H. #1407703908 | 3,183 |
| 498378 | Aug 18, 2000 | Aug 18, 2000 | Bridwell Oil Co. | Bridwell River Ranch #7307734634 | 5,100 |
| 498308 | Aug 10, 2000 | Aug 10, 2000 | Bridwell Oil Co. | Bridwell River Ranch #7407734631 | 5,070 |
| 497227 | Jul 25, 2000 | Jul 25, 2000 | Willowbend Investments, Inc. | Simons #107734813 | 4,100 |
| 496626 | Jun 29, 2000 | Jun 29, 2000 | Lane Operating Company | Wetsel #107734812 | 4,600 |
| 495252 | May 30, 2000 | May 30, 2000 | Allen, C. L. (Doie) | Byers Bros #107734811 | 1,990 |
| 493985 | Apr 17, 2000 | Apr 17, 2000 | Tahoe Exploration Inc. | Mayo #107734810 | 3,500 |
| 493774 | Apr 10, 2000 | Apr 10, 2000 | Bridwell Oil Co. | Bridwell River Ranch #6707734571 | 4,870 |
| 493202 | Mar 22, 2000 | Mar 22, 2000 | Walsh & Watts, Inc. | Van Arsdale B #107704692 | 1,600 |
| 493070 | Mar 21, 2000 | Mar 21, 2000 | Lindemann, James D. | Lutz #107734809 | 4,999 |
| 493014 | Mar 13, 2000 | Mar 13, 2000 | Muirfield Exploration, Ltd. | Taylor Estate, Etal #4507734808 | 2,000 |
| 492059 | Feb 24, 2000 | Feb 24, 2000 | Lane Operating Company | McCall-Browning Unit #107734807 | 4,100 |
| 490063 | Dec 30, 1999 | Dec 30, 1999 | Patrick, Joe Ben | Patrick M #307734805 | 2,000 |
| 490567 | Dec 21, 1999 | Dec 21, 1999 | Jackson, Jeral W. Inc. | Patrick C #1207734806 | 400 |
| 490371 | Dec 15, 1999 | Dec 15, 1999 | Lindemann, James D. | Poirot #107733532 | 4,999 |
| 489370 | Nov 19, 1999 | Nov 19, 1999 | Lynx Energy Company, Inc. | Harrison & Allen #4407734802 | 2,000 |
| 489369 | Nov 19, 1999 | Nov 19, 1999 | Lynx Energy Company, Inc. | Harrison & Allen #4307734803 | 2,000 |
| 489240 | Nov 16, 1999 | Nov 16, 1999 | Patrick, Joe Ben | Patrick M. #207734804 | 2,000 |
| 488944 | Nov 2, 1999 | Nov 2, 1999 | Lane Operating Company | Stark #107734800 | 6,900 |
| 488975 | Oct 29, 1999 | Oct 29, 1999 | Sabre Operating, Inc. | Shumake #3507734801 | 1,400 |
| 488717 | Oct 25, 1999 | Oct 25, 1999 | Lane Operating Company | Harris #107734647 | 6,148 |
| 488554 | Oct 15, 1999 | Oct 15, 1999 | Muirfield Exploration, Ltd. | Firestone, Tom #2807734799 | 2,000 |
| 488553 | Oct 15, 1999 | Oct 15, 1999 | Muirfield Exploration, Ltd. | Firestone, Tom #2707734798 | 2,000 |
| 488246 | Oct 6, 1999 | Oct 6, 1999 | Corda Corporation | Gray #107734797 | 6,400 |
| 488100 | Oct 6, 1999 | Oct 6, 1999 | Lane Operating Company | Gill #107734796 | 4,600 |