| 664799Amendment | Jul 8, 2008 | Jul 8, 2008 | Windsor Energy Group, L.L.C. | Upton | Owens 10 #4 | 10,336 | 46135962 |
| 663942 | Jun 23, 2008 | Jun 23, 2008 | Windsor Energy Group, L.L.C. | Midland | St #4107 | 10,908 | 32935973 |
| 663942Amendment | Jun 23, 2008 | Jun 23, 2008 | Windsor Energy Group, L.L.C. | Midland | St #4107 | 10,908 | 32935973 |
| 662547 | Jun 9, 2008 | Jun 9, 2008 | Windsor Energy Group, L.L.C. | Upton | Owens 10 #3 | 10,380 | 46135905 |
| 662546 | Jun 9, 2008 | Jun 9, 2008 | Windsor Energy Group, L.L.C. | Upton | Lottie #2 | 10,378 | 46135904 |
| 662545 | Jun 9, 2008 | Jun 9, 2008 | Windsor Energy Group, L.L.C. | Upton | Angie #2 | 10,470 | 46135906 |
| 657820 | May 13, 2008 | May 13, 2008 | Windsor Energy Group, L.L.C. | Upton | Tori #9 | 10,400 | 46135758 |
| 660243 | May 6, 2008 | May 6, 2008 | Windsor Energy Group, L.L.C. | Upton | Cathy #7 | 9,888 | 46135838 |
| 660241 | May 5, 2008 | May 5, 2008 | Windsor Energy Group, L.L.C. | Upton | Cathy #4 | 9,879 | 46135836 |
| 660240 | May 5, 2008 | May 5, 2008 | Windsor Energy Group, L.L.C. | Upton | Cathy #3 | 10,105 | 46135835 |
| 660239 | May 5, 2008 | May 5, 2008 | Windsor Energy Group, L.L.C. | Upton | Cathy #2 | 10,105 | 46135834 |
| 660235 | May 5, 2008 | May 5, 2008 | Windsor Energy Group, L.L.C. | Upton | Janey #4 | 10,502 | 46135833 |
| 660233 | May 5, 2008 | May 5, 2008 | Windsor Energy Group, L.L.C. | Upton | Janey #3 | 10,955 | 46135832 |
| 660230 | May 5, 2008 | May 5, 2008 | Windsor Energy Group, L.L.C. | Upton | Charlotte #2 | 10,505 | 46135831 |
| 657361 | Apr 21, 2008 | Apr 21, 2008 | Windsor Energy Group, L.L.C. | Ector | Shelley #3 | 10,350 | 13539480 |
| 657353 | Apr 21, 2008 | Apr 21, 2008 | Windsor Energy Group, L.L.C. | Ector | Shelley #4 | 10,350 | 13539481 |
| 658408 | Apr 18, 2008 | Apr 18, 2008 | Windsor Energy Group, L.L.C. | Upton | Betty Ruth #3 | 10,450 | 46135782 |
| 658406 | Apr 18, 2008 | Apr 18, 2008 | Windsor Energy Group, L.L.C. | Upton | Betty Ruth #2 | 10,448 | 46135781 |
| 658412 | Apr 11, 2008 | Apr 11, 2008 | Windsor Energy Group, L.L.C. | Upton | Charlotte #3 | 10,519 | 46135784 |
| 658409 | Apr 11, 2008 | Apr 11, 2008 | Windsor Energy Group, L.L.C. | Upton | Mary Ellen #1 | 10,493 | 46135783 |
| 658405 | Apr 11, 2008 | Apr 11, 2008 | Windsor Energy Group, L.L.C. | Upton | Janey #5 | 10,968 | 46135780 |
| 658404 | Apr 11, 2008 | Apr 11, 2008 | Windsor Energy Group, L.L.C. | Upton | Crystal #2 | 10,633 | 46135779 |
| 658292 | Apr 11, 2008 | Apr 11, 2008 | Windsor Energy Group, L.L.C. | Upton | Anne #4 | 10,398 | 46135795 |
| 658308 | Apr 10, 2008 | Apr 10, 2008 | Windsor Energy Group, L.L.C. | Upton | Anne #6 | 10,405 | 46135771 |
| 658301 | Apr 10, 2008 | Apr 10, 2008 | Windsor Energy Group, L.L.C. | Upton | Anne #5 | 10,286 | 46135769 |
| 658053 | Apr 7, 2008 | Apr 7, 2008 | Windsor Energy Group, L.L.C. | Upton | Anne #3 | 10,440 | 46135764 |
| 658052 | Apr 7, 2008 | Apr 7, 2008 | Windsor Energy Group, L.L.C. | Upton | Anne #2 | 10,377 | 46135763 |
| 658051 | Apr 7, 2008 | Apr 7, 2008 | Windsor Energy Group, L.L.C. | Upton | Anne #1 | 10,377 | 46135762 |
| 657940 | Apr 7, 2008 | Apr 7, 2008 | Windsor Energy Group, L.L.C. | Upton | Cathy #8 | 9,855 | 46135761 |
| 657939 | Apr 4, 2008 | Apr 4, 2008 | Windsor Energy Group, L.L.C. | Upton | Cathy #6 | 10,108 | 46135760 |
| 657938 | Apr 4, 2008 | Apr 4, 2008 | Windsor Energy Group, L.L.C. | Upton | Cathy #5 | 10,107 | 46135759 |
| 656886 | Mar 18, 2008 | Mar 18, 2008 | Windsor Energy Group, L.L.C. | Upton | Cathy #1 | 10,111 | 46135745 |
| 654713 | Mar 12, 2008 | Mar 12, 2008 | Windsor Energy Group, L.L.C. | Upton | Tori #8 | 11,000 | 46135678 |
| 656021 | Mar 6, 2008 | Mar 6, 2008 | Windsor Energy Group, L.L.C. | Upton | Edwards #5 | 10,400 | 46135727 |
| 656018 | Mar 6, 2008 | Mar 6, 2008 | Windsor Energy Group, L.L.C. | Upton | Edwards #4 | 10,400 | 46135726 |
| 654509 | Feb 11, 2008 | Feb 11, 2008 | Windsor Energy Group, L.L.C. | Upton | Kendra #1 | 11,000 | 46135675 |
| 654506 | Feb 11, 2008 | Feb 11, 2008 | Windsor Energy Group, L.L.C. | Upton | Charlotte #1 | 11,000 | 46135674 |
| 654472 | Feb 8, 2008 | Feb 8, 2008 | Windsor Energy Group, L.L.C. | Upton | Janey #2 | 11,000 | 46135672 |
| 633423 | Feb 14, 2007 | Feb 14, 2007 | Windsor Energy Group, L.L.C. | Cherokee | Strouse #2 | 12,000 | 07331236 |
| 632139 | Jan 19, 2007 | Jan 19, 2007 | Windsor Energy Group, L.L.C. | Cherokee | Skynyrd #1HH | 11,500 | 07331226 |
| 626005 | Sep 15, 2006 | Sep 15, 2006 | Windsor Energy Group, L.L.C. | Cherokee | Fogerty #1 | 11,000 | 07331197 |
| 626005Amendment | Sep 15, 2006 | Sep 15, 2006 | Windsor Energy Group, L.L.C. | Cherokee | Fogerty #1 | 11,000 | 07331197 |
| 624802 | Aug 23, 2006 | Aug 23, 2006 | Windsor Energy Group, L.L.C. | Cherokee | Strouse #1 | 13,000 | 07331191 |
| 623825 | Aug 3, 2006 | Aug 3, 2006 | Windsor Energy Group, L.L.C. | Cherokee | Dear #1A | 12,000 | 07331183 |
| 620990 | Jun 14, 2006 | Jun 14, 2006 | Windsor Energy Group, L.L.C. | Cherokee | Dear #1 | 12,000 | 07331177 |
| 620922 | Jun 13, 2006 | Jun 13, 2006 | Windsor Energy Group, L.L.C. | Cherokee | Shaffett Gas Unit #2 | 12,000 | 07331176 |
| 620922Amendment | Jun 13, 2006 | Jun 13, 2006 | Windsor Energy Group, L.L.C. | Cherokee | South Shaffett Unit #2 | 12,000 | 07331176 |
| 620223 | Jun 1, 2006 | Jun 1, 2006 | Windsor Energy Group, L.L.C. | Cherokee | Decker, E. M. #1 | 11,500 | 07331124 |
| 619186 | May 12, 2006 | May 12, 2006 | Windsor Energy Group, L.L.C. | Cherokee | D.F. Landrum #1 | 11,200 | 07331173 |
| 619186Amendment | May 12, 2006 | May 12, 2006 | Windsor Energy Group, L.L.C. | Cherokee | Landrum, D.F. #1 | 11,200 | 07331173 |
| 617036 | Apr 5, 2006 | Apr 5, 2006 | Windsor Energy Group, L.L.C. | Cherokee | Hancock #1 | 13,350 | 07331025 |
| 616773 | Mar 30, 2006 | Mar 30, 2006 | Windsor Energy Group, L.L.C. | Cherokee | E.M. Decker #4 | 11,500 | 07331166 |
| 616197 | Mar 21, 2006 | Mar 21, 2006 | Windsor Energy Group, L.L.C. | Cherokee | Young #1 | 12,500 | 07331164 |
| 613400 | Feb 1, 2006 | Feb 1, 2006 | Windsor Energy Group, L.L.C. | Cherokee | McElroy A #3 | 12,500 | 07331156 |
| 611469 | Dec 22, 2005 | Dec 22, 2005 | Windsor Energy Group, L.L.C. | Cherokee | McElroy A #4 | 12,050 | 07331154 |
| 558242 | Mar 28, 2005 | Mar 28, 2005 | Windsor Energy Group, L.L.C. | Cherokee | Shaffett #1 | 12,000 | 07331126 |
| 557427 | Mar 7, 2005 | Mar 7, 2005 | Windsor Energy Group, L.L.C. | Cherokee | Decker, E.M. #1 | 11,500 | 07331124 |
| 530715 | Apr 14, 2003 | Apr 14, 2003 | Windsor Energy Group, L.L.C. | Harrison | Smith #1 | 10,800 | 20332796 |
| 530715Amendment | Apr 14, 2003 | Apr 14, 2003 | Windsor Energy Group, L.L.C. | Harrison | Smith #1 | 11,000 | 20332796 |