| Wilson Duke 171 #2742-435-38793 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,700 | Jan 14, 2008 | — | — |
| Wilson Duke 171 #2842-435-38794 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,500 | Jan 14, 2008 | — | — |
| Wilson Duke 171 #1742-435-38795 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,801 | Jan 14, 2008 | — | — |
| Wilson Duke 189 #2742-435-38800 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 9,027 | Jan 14, 2008 | — | — |
| Mayer Ranch 35 #942-435-38836 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,470 | Jan 14, 2008 | — | — |
| Vanderstucken Joe M. #1542-435-38830 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,770 | Jan 11, 2008 | — | — |
| Ward 114 #2442-435-38826 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,684 | Jan 10, 2008 | — | — |
| Hill-Mayer Edwins S. Jr J #642-435-38827 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 7,972 | Jan 9, 2008 | — | — |
| Hill-Mayer Edwin S. Jr J #742-435-38828 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 7,985 | Jan 9, 2008 | — | — |
| Hill-Mayer Edwin S. Jr. J #842-435-38829 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,028 | Jan 9, 2008 | — | — |
| Canyon Ranch 207 #21S42-435-38781 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 7,048 | Jan 8, 2008 | — | — |
| Canyon Ranch 207 #19S42-435-38789 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 6,990 | Jan 8, 2008 | — | — |
| Wilson Duke 189 #1942-435-38796 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 9,000 | Jan 8, 2008 | — | — |
| Wilson Duke 189 #2142-435-38797 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 9,000 | Jan 8, 2008 | — | — |
| Wilson Duke 189 #2442-435-38798 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 9,020 | Jan 8, 2008 | — | — |
| Wilson Duke 189 #2242-435-38799 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 9,001 | Jan 8, 2008 | — | — |
| Wilson Duke 189 #2842-435-38801 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 9,200 | Jan 8, 2008 | — | — |
| Wilson Duke 189 #2642-435-38802 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 9,029 | Jan 8, 2008 | — | — |
| Mayfield 46 #2542-435-38832 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,350 | Jan 8, 2008 | — | — |
| Canyon Ranch 207 #18S42-435-38779 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 7,032 | Jan 7, 2008 | — | — |
| Whitehead 6 #642-435-38824 | Upp Operating LLC only | Sutton, TXWhitehead (Strawn) | ActiveGas | 8,741 | Jan 3, 2008 | — | — |
| Mayfield 45 #2242-435-38814 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,406 | Jan 2, 2008 | — | — |
| Richardson 6 #942-435-38816 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,372 | Jan 2, 2008 | — | — |
| Shurley RR 2A #742-435-38772 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 9,054 | Dec 27, 2007 | — | — |
| Mayfield 33 #2442-435-38777 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,572 | Dec 21, 2007 | — | — |
| Shurley RR 2A #942-435-38774 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,241 | Dec 20, 2007 | — | — |
| Mittel R. H. #1142-435-38812 | Upp Operating LLC only | Sutton, TXSonora (Canyon Upper) | ActiveGas | 7,118 | Dec 20, 2007 | — | — |
| Canyon Ranch #1272S42-435-38805 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 6,762 | Dec 17, 2007 | — | — |
| Stewart 78 1/2 #542-435-38811 | Smith Pipe of Abilene only | Sutton, TXSawyer (Canyon) | PluggedGas | 5,950 | Dec 15, 2007 | — | — |
| Canyon Ranch 115 #25S42-435-38803 | Enervest Operating L.L.C. only | Sutton, TXSawyer (Canyon) | PluggedGas | 7,000 | Dec 13, 2007 | — | — |
| Canyon Ranch 105 #17S42-435-38806 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 7,016 | Dec 13, 2007 | — | — |
| Mayer Ranch 40 #342-435-38808 | Highmount Expl & Prod Texas LLCpermitted by · no operator of record | Sutton, TX | Not on schedule | 8,550 | Dec 13, 2007 | — | — |
| Mayer Ranch 40 #242-435-38809 | Highmount Expl & Prod Texas LLCpermitted by · no operator of record | Sutton, TX | Not on schedule | 8,550 | Dec 13, 2007 | — | — |
| Mayer Ranch 40 #142-435-38810 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,442 | Dec 13, 2007 | — | — |
| Shurley 139 #542-435-38756 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 6,925 | Dec 12, 2007 | — | — |
| Mayfield 32 #2142-435-38778 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,325 | Dec 12, 2007 | — | — |
| Canyon Ranch #39S42-435-38780 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 5,747 | Dec 12, 2007 | — | — |
| Canyon Ranch 207 #20S42-435-38782 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 7,117 | Dec 12, 2007 | — | — |
| Canyon Ranch #116S42-435-38807 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 5,700 | Dec 12, 2007 | — | — |
| Wilson Duke #211342-435-38757 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 9,000 | Dec 11, 2007 | — | — |
| Stewart #10342-435-38776 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 5,519 | Nov 30, 2007 | — | — |
| Simmons 72 #1442-435-38764 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,010 | Nov 28, 2007 | — | — |
| Hudspeth 2 #1__42-435-38775 | Dominion Oklahoma Texas E&P, Incpermitted by · no operator of record | Sutton, TX | Plugged | 8,650 | Nov 20, 2007 | — | — |
| Simmons 73 #1142-435-38760 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,150 | Nov 16, 2007 | — | — |
| Simmons 73 #1042-435-38761 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,025 | Nov 16, 2007 | — | — |
| Simmons 72 #1342-435-38762 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,010 | Nov 16, 2007 | — | — |
| Simmons 71 #1142-435-38765 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,050 | Nov 16, 2007 | — | — |
| Simmons 71 #1242-435-38766 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,025 | Nov 16, 2007 | — | — |
| Simmons 71 #1342-435-38767 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,025 | Nov 16, 2007 | — | — |
| Diebitsch 70 #1442-435-38768 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,025 | Nov 16, 2007 | — | — |