| Nicks Gerald 5 #742-435-38623 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,707 | Jul 27, 2007 | — | — |
| Nicks Gerald 5 #642-435-38625 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,682 | Jul 27, 2007 | — | — |
| Nicks Gerald 5 #1042-435-38627 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,800 | Jul 27, 2007 | — | — |
| Lancaster #10HHZ42-367-34483 | Upp Operating LLC | Parker, TXNewark East (Barnett Shale) | ActiveGas | 6,600 | Jul 24, 2007 | — | — |
| Canyon Ranch 105 #15S42-435-38611 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 6,623 | Jul 24, 2007 | — | — |
| Canyon Ranch #113S42-435-38612 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 5,011 | Jul 21, 2007 | — | — |
| Wilson Duke 174 #842-435-38613 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,029 | Jul 21, 2007 | — | — |
| Pressley Unit #7HHZ42-251-32038 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | Temporarily abandonedGas | 8,235 | Jul 20, 2007 | — | — |
| Pressley Unit #5HHZ42-251-32034 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,313 | Jul 19, 2007 | — | — |
| Pressley #6HHZ42-251-32037 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,099 | Jul 19, 2007 | — | — |
| Lancaster #8HHZ42-367-34478 | Upp Operating LLC | Parker, TXNewark East (Barnett Shale) | ActiveGas | 6,475 | Jul 19, 2007 | — | — |
| Lancaster #9HHZ42-367-34479 | Upp Operating LLC | Parker, TXNewark East (Barnett Shale) | ActiveGas | 6,497 | Jul 19, 2007 | — | — |
| Kemp a #13HHZ42-251-32027 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | Temporarily abandonedGas | 8,037 | Jul 18, 2007 | — | — |
| Rayburn Unit #10HHZ42-251-32028 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,277 | Jul 18, 2007 | — | — |
| Barron #6HHZ42-251-32029 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,387 | Jul 18, 2007 | — | — |
| Barron #7 HHZ42-251-32030 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,381 | Jul 18, 2007 | — | — |
| Kemp a #12HHZ42-251-32024 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | Temporarily abandonedGas | 7,881 | Jul 17, 2007 | — | — |
| Ford Unit #1 HHZ42-251-32012 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | Temporarily abandonedGas | 6,760 | Jul 16, 2007 | — | — |
| Martin Unit #1HHZ42-251-31991 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,701 | Jul 14, 2007 | — | — |
| Fleet Unit #3HHZ42-251-31985 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,055 | Jul 13, 2007 | — | — |
| Fleet Unit #4HHZ42-251-31987 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,910 | Jul 13, 2007 | — | — |
| Nixon 177 #1042-413-32469 | Upp Operating LLC | Schleicher, TXSawyer (Strawn North) | ActiveGas | 7,704 | Jul 13, 2007 | — | — |
| Wilson Duke 187 #19X42-435-38607 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,060 | Jul 13, 2007 | — | — |
| Fleet Unit #2HHZ42-251-31986 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,055 | Jul 12, 2007 | — | — |
| Hudspeth 8 #242-435-38593 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,225 | Jul 12, 2007 | — | — |
| Lake Alvarado Unit #1HHZ42-251-31974 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,953 | Jul 10, 2007 | — | — |
| Lake Alvarado Unit #2HHZ42-251-31975 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,768 | Jul 10, 2007 | — | — |
| Teich Henry #6HHZ42-251-31968 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,637 | Jul 9, 2007 | — | — |
| Teich Henry #5HHZ42-251-31969 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,732 | Jul 9, 2007 | — | — |
| Canyon Ranch #9012EX42-137-31910 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 6,900 | Jul 5, 2007 | — | — |
| Wilson Duke 172 #2142-435-38522 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,916 | Jul 5, 2007 | — | — |
| Hill-Mayer Edwin S. Jr. D #6X42-435-38589 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,209 | Jul 5, 2007 | — | — |
| Maples #6HHZ42-251-31948 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,581 | Jul 3, 2007 | — | — |
| Maples #7HHZ42-251-31951 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,656 | Jul 3, 2007 | — | — |
| Maples #8HHZ42-251-31952 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,805 | Jul 3, 2007 | — | — |
| Watts Callie #4 HHZ42-497-36293 | Upp Operating LLC | Wise, TXNewark East (Barnett Shale) | ActiveGas | 7,104 | Jul 3, 2007 | — | — |
| Maples #4HHZ42-251-31941 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | Temporarily abandonedGas | 7,758 | Jul 2, 2007 | — | — |
| Maples #5HHZ42-251-31943 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,669 | Jul 2, 2007 | — | — |
| Teich Henry #4 HHZ42-251-31939 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,606 | Jun 29, 2007 | — | — |
| Strange #6HHZ42-251-31926 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,819 | Jun 28, 2007 | — | — |
| Mayer Edwin S. Jr. T #542-435-38582 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,001 | Jun 28, 2007 | — | — |
| Morriss Bros. Ranch H 102 #242-435-38583 | Upp Operating LLC | Sutton, TXWhitehead (Strawn) | ActiveGas | 9,400 | Jun 28, 2007 | — | — |
| Thorp #300242-435-38584 | Upp Operating LLC | Sutton, TXWhitehead (Strawn) | ActiveGas | 9,906 | Jun 28, 2007 | — | — |
| Morriss Bros. Ranch a 118 #242-435-38585 | Upp Operating LLC | Sutton, TXWhitehead (Strawn) | ActiveGas | 9,416 | Jun 28, 2007 | — | — |
| Morriss Bros. C3 #242-435-38586 | Upp Operating LLC | Sutton, TXWhitehead (Strawn) | ActiveGas | 9,500 | Jun 28, 2007 | — | — |
| Strange Unit #4HHZ42-251-31924 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | Temporarily abandonedGas | 7,856 | Jun 27, 2007 | — | — |
| Strange Unit #5HHZ42-251-31925 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,757 | Jun 27, 2007 | — | — |
| Mayer 20 #942-435-38431 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,645 | Jun 27, 2007 | — | — |
| Clayton 2 #542-105-40340 | Upp Operating LLC | Crockett, TXOzona NE. (Canyon 7520) | ActiveGas | 8,752 | Jun 21, 2007 | — | — |
| Clayton 7 #442-105-40341 | Upp Operating LLC | Crockett, TXOzona NE. (Canyon 7520) | ActiveGas | 8,656 | Jun 21, 2007 | — | — |