| Creek #970242-435-38269 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,377 | Jan 4, 2007 | — | — |
| Eagle Ford B #6 HHZ42-251-31410 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,400 | Jan 3, 2007 | — | — |
| Galbreath 67 #642-435-38258 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,150 | Jan 3, 2007 | — | — |
| Kemp B Unit #1HHZ42-251-31400 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,231 | Dec 28, 2006 | — | — |
| Kemp B #2HHZ42-251-31402 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,175 | Dec 28, 2006 | — | — |
| Kemp B Unit #3HHZ42-251-31403 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,005 | Dec 28, 2006 | — | — |
| Richardson 138 #1742-435-38245 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,353 | Dec 28, 2006 | — | — |
| Bontke Unit #2HHZ42-139-30493 | Upp Operating LLC | Ellis, TXNewark East (Barnett Shale) | ActiveGas | 8,588 | Dec 27, 2006 | — | — |
| Fields 21 #1042-435-38231 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,020 | Dec 27, 2006 | — | — |
| Rayburn #1 HHZ42-251-31180 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,346 | Dec 22, 2006 | — | — |
| Kolar #7HHZ42-251-31382 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,792 | Dec 22, 2006 | — | — |
| Kolar #6HHZ42-251-31383 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,817 | Dec 22, 2006 | — | — |
| U.S. Lime #14 HHZ42-251-31384 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | Temporarily abandonedGas | 6,321 | Dec 22, 2006 | — | — |
| Hays #2 HHZ42-251-31385 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,588 | Dec 22, 2006 | — | — |
| River Hills #7HHZ42-251-31386 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,712 | Dec 22, 2006 | — | — |
| River Hills #8HHZ42-251-31387 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,788 | Dec 22, 2006 | — | — |
| River Hills #9HHZ42-251-31388 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,705 | Dec 22, 2006 | — | — |
| Morriss Bros. Ranch L 147 #342-435-38230 | Upp Operating LLC | Sutton, TXWhitehead (Strawn) | ActiveGas | 9,595 | Dec 21, 2006 | — | — |
| Morriss Bros. Ranch M 148 #242-435-38232 | Upp Operating LLC | Sutton, TXWhitehead (Strawn) | ActiveGas | 9,600 | Dec 21, 2006 | — | — |
| Morriss Bros. Ranch B 120 #242-435-38240 | Upp Operating LLC | Sutton, TXWhitehead (Strawn) | ActiveGas | 9,624 | Dec 21, 2006 | — | — |
| Morriss Bros. Ranch B 120 #342-435-38241 | Upp Operating LLC | Sutton, TXWhitehead (Strawn) | ActiveGas | 9,600 | Dec 21, 2006 | — | — |
| Reed 101 #1442-435-34721 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,450 | Dec 20, 2006 | — | — |
| Reed 101 #2742-435-38234 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 6,400 | Dec 20, 2006 | — | — |
| Reed 101 #2842-435-38235 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 6,479 | Dec 20, 2006 | — | — |
| Reed 101 #2942-435-38236 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,499 | Dec 20, 2006 | — | — |
| Reed 101 #3042-435-38237 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 6,321 | Dec 20, 2006 | — | — |
| Reed 101 #3142-435-38238 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,425 | Dec 20, 2006 | — | — |
| Valliant #1542-435-38239 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,700 | Dec 19, 2006 | — | — |
| Vanderstucken Joe M. B #242-435-38233 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,800 | Dec 18, 2006 | — | — |
| Ferguson Foundation #8HHZ42-251-31379 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,479 | Dec 15, 2006 | — | — |
| Scott R. #1HHZ42-497-36188 | Upp Operating LLC | Wise, TXNewark East (Barnett Shale) | ActiveGas | 6,936 | Dec 15, 2006 | — | — |
| Bloodworth 7 #142-435-38229 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 9,075 | Dec 12, 2006 | — | — |
| Dillon #1 HHZ42-251-31364 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,503 | Dec 8, 2006 | — | — |
| Fricks #5HHZ42-251-31365 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,542 | Dec 8, 2006 | — | — |
| Tolbert #2HHZ42-251-31366 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,300 | Dec 7, 2006 | — | — |
| Thorp 30 #142-435-38224 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 9,705 | Dec 5, 2006 | — | — |
| Mayer 19 #1042-435-38225 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,600 | Dec 5, 2006 | — | — |
| Pressley #3HHZ42-251-31356 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,174 | Dec 4, 2006 | — | — |
| Pressley #4 HHZ42-251-31357 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,081 | Dec 4, 2006 | — | — |
| Duke Wilson 21 #1242-435-38220 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 9,200 | Dec 4, 2006 | — | — |
| Wilson Duke #1542-435-38221 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,900 | Dec 4, 2006 | — | — |
| Wilson Duke 21 #1742-435-38222 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,800 | Dec 1, 2006 | — | — |
| Brown/Whitehead 2 #5342-435-38223 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,850 | Dec 1, 2006 | — | — |
| Kemp D #2HHZ42-251-31345 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,010 | Nov 30, 2006 | — | — |
| Kemp D #3HHZ42-251-31346 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,893 | Nov 30, 2006 | — | — |
| Hill-Rousselot G #442-413-32420 | Upp Operating LLC | Schleicher, TXSawyer (Strawn North) | ActiveGas | 8,618 | Nov 30, 2006 | — | — |
| Morriss 83 #6X42-435-38218 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,570 | Nov 29, 2006 | — | — |
| Owens #1HHZ42-251-31337 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,392 | Nov 28, 2006 | — | — |
| Goforth #1HHZ42-367-34253 | Upp Operating LLC | Parker, TXNewark East (Barnett Shale) | ActiveGas | 6,583 | Nov 27, 2006 | — | — |
| Bowden #342-435-38217 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,886 | Nov 27, 2006 | — | — |