| Little Buddy #9HHZ42-251-31892 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | Temporarily abandonedGas | 7,540 | Jun 12, 2007 | — | — |
| Bone Ranch #3HHZ42-367-34443 | Upp Operating LLC | Parker, TXNewark East (Barnett Shale) | ActiveGas | 6,577 | Jun 8, 2007 | — | — |
| Milford Investments Unit #2HHZ42-251-31758 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,864 | Jun 7, 2007 | — | — |
| Shurley RR 7 #642-435-38515 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,975 | Jun 7, 2007 | — | — |
| Mayer Edwin S. Jr. #90342-435-38541 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,100 | Jun 7, 2007 | — | — |
| U.S. Lime C #16HHZ42-251-31883 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | Temporarily abandonedGas | 6,187 | Jun 6, 2007 | — | — |
| Fleet Unit #1HHZ42-251-31474 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,031 | Jun 5, 2007 | — | — |
| Stewart #2HHZ42-251-31639 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,613 | May 31, 2007 | — | — |
| Canyon Ranch #1138S42-435-38519 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 6,910 | May 31, 2007 | — | — |
| Shannon 52 #2042-435-38533 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,085 | May 31, 2007 | — | — |
| Wilson #7HHZ42-251-31720 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,574 | May 30, 2007 | — | — |
| Stevenson a #4 HHZ42-251-31827 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,196 | May 30, 2007 | — | — |
| Zora Mae #1HHZ42-251-31853 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,538 | May 30, 2007 | — | — |
| Hays #3 HHZ42-251-31867 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,489 | May 30, 2007 | — | — |
| Shurley 141 #2942-435-38447 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,943 | May 29, 2007 | — | — |
| Shurley 141 #2642-435-38450 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,100 | May 29, 2007 | — | — |
| Shurley 141 #2542-435-38451 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,082 | May 29, 2007 | — | — |
| Shurley 141 #2842-435-38458 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,329 | May 29, 2007 | — | — |
| KTV Caddo #3HHZ42-251-31834 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,880 | May 25, 2007 | — | — |
| Milford Investments Unit #1HHZ42-251-31844 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,844 | May 25, 2007 | — | — |
| Zora Mae #2HHZ42-251-31852 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,453 | May 25, 2007 | — | — |
| Mayer Edwin S. Jr. 4 #542-435-38516 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,123 | May 25, 2007 | — | — |
| Shurley RR 6 #742-435-38520 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,265 | May 25, 2007 | — | — |
| Canyon Ranch 207 #12S42-435-38530 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,700 | May 25, 2007 | — | — |
| Canyon Ranch 207 #14S42-435-38526 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,004 | May 24, 2007 | — | — |
| Hill-Mayer Edwin S. Jr. DD #442-435-38527 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,174 | May 24, 2007 | — | — |
| Wilson Duke #401942-435-38531 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 9,109 | May 24, 2007 | — | — |
| Wilson Duke #401442-435-38532 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,700 | May 24, 2007 | — | — |
| Canyon Ranch #1127E42-137-31904 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 6,810 | May 23, 2007 | — | — |
| Canyon Ranch #2095E42-137-31905 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 6,785 | May 23, 2007 | — | — |
| Wilson #5HHZ42-251-31716 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,818 | May 23, 2007 | — | — |
| Wilson #6 HHZ42-251-31717 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | Temporarily abandonedGas | 7,670 | May 23, 2007 | — | — |
| Shurley RR 6 #842-435-38510 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,075 | May 23, 2007 | — | — |
| Shurley RR 7 #542-435-38513 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,132 | May 23, 2007 | — | — |
| Shurley RR 10 #442-435-38514 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,718 | May 23, 2007 | — | — |
| Shurley RR 6 #942-435-38521 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,100 | May 23, 2007 | — | — |
| Canyon Ranch 207 #15S42-435-38525 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 6,410 | May 23, 2007 | — | — |
| Osburn #1HHZ42-251-31836 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | Temporarily abandonedGas | 6,450 | May 22, 2007 | — | — |
| Osburn #2HHZ42-251-31837 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,420 | May 22, 2007 | — | — |
| Kelly 35 #1142-435-38507 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,080 | May 22, 2007 | — | — |
| Kelly 35 #1242-435-38509 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,996 | May 22, 2007 | — | — |
| Shurley RR 6 #1042-435-38511 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,271 | May 22, 2007 | — | — |
| Shurley RR 7 #442-435-38512 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,978 | May 22, 2007 | — | — |
| Hill-Mayer Edwin S. Jr. H #342-435-38528 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,160 | May 22, 2007 | — | — |
| Fricks #8 HHZ42-251-31829 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,645 | May 21, 2007 | — | — |
| Hilton #4HHZ42-251-31830 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | Temporarily abandonedGas | 8,148 | May 21, 2007 | — | — |
| Hilton Unit #5HHZ42-251-31832 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,980 | May 21, 2007 | — | — |
| Hill-Mayer Edwin S. Jr. I #642-435-38505 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,050 | May 21, 2007 | — | — |
| Kelly 35 #4A42-435-38508 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,236 | May 21, 2007 | — | — |
| Canyon Ranch 207 #16S42-435-38524 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,705 | May 21, 2007 | — | — |