| Kemp D #7HHZ42-251-32649 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,876 | Feb 25, 2008 | — | — |
| Kemp D #8HHZ42-251-32650 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,841 | Feb 25, 2008 | — | — |
| Kemp D #9HHZ42-251-32651 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,834 | Feb 25, 2008 | — | — |
| Kemp D #10HHZ42-251-32652 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,868 | Feb 25, 2008 | — | — |
| Kemp D #11HHZ42-251-32653 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,920 | Feb 25, 2008 | — | — |
| Jones 118 #3242-435-38887 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,392 | Feb 25, 2008 | — | — |
| Jones 118 #3442-435-38888 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,454 | Feb 25, 2008 | — | — |
| Jones 118 #3342-435-38889 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,366 | Feb 25, 2008 | — | — |
| Ormsby #2HHZ42-251-32622 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,545 | Feb 20, 2008 | — | — |
| Ormsby #1HHZ42-251-32625 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,555 | Feb 20, 2008 | — | — |
| Bell J. C. Estate #7HHZ42-251-32615 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,854 | Feb 15, 2008 | — | — |
| Jones 118 #2842-435-38876 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,554 | Feb 15, 2008 | — | — |
| Jones 118 #2942-435-38877 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,452 | Feb 15, 2008 | — | — |
| U.S. Lime a #25HHZ42-251-32597 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | Temporarily abandonedGas | 6,090 | Feb 13, 2008 | — | — |
| U.S. Lime a #26HHZ42-251-32598 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,093 | Feb 13, 2008 | — | — |
| U.S. Lime a #24HHZ42-251-32599 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,107 | Feb 13, 2008 | — | — |
| Rayburn Unit #3RHHZ42-251-32605 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,271 | Feb 13, 2008 | — | — |
| Fleet Unit #8HHZ42-251-32594 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,060 | Feb 9, 2008 | — | — |
| Fleet Unit #6HHZ42-251-32590 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | Temporarily abandonedGas | 8,074 | Feb 8, 2008 | — | — |
| Fleet Unit #7HHZ42-251-32593 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,959 | Feb 8, 2008 | — | — |
| Espy 57 #1442-435-38861 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 5,975 | Feb 8, 2008 | — | — |
| Espy 56 #1842-435-38864 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,125 | Feb 8, 2008 | — | — |
| Espy 56 #2142-435-38868 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 6,000 | Feb 8, 2008 | — | — |
| University 56-22 #1042-105-40548 | Upp Operating LLC | Crockett, TXOzona NE. (Canyon 7520) | ActiveGas | 8,750 | Feb 7, 2008 | — | — |
| Berry #1HHZ42-251-32586 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | PluggedGas | 10,000 | Feb 7, 2008 | — | — |
| Powell 23 #942-413-32507 | Upp Operating LLC | Schleicher, TXSawyer (Strawn North) | ActiveGas | 8,541 | Feb 7, 2008 | — | — |
| Nobles Ranch a #342-435-38831 | Upp Operating LLC | Sutton, TXWhitehead (Strawn) | PluggedGas | 9,650 | Feb 7, 2008 | — | — |
| Espy 57 #1642-435-38863 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,079 | Feb 7, 2008 | — | — |
| Espy 56 #2042-435-38867 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,061 | Feb 7, 2008 | — | — |
| Canyon Ranch 219 #2E42-137-31705 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 7,295 | Feb 6, 2008 | — | — |
| Powell 7 #70342-413-32506 | Upp Operating LLC | Schleicher, TXSawyer (Canyon) | ActiveGas | 8,375 | Feb 6, 2008 | — | — |
| Jones Ranch 156 #642-435-38860 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 7,553 | Feb 6, 2008 | — | — |
| Thorp #190242-435-38859 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | Temporarily abandonedGas | 10,515 | Feb 5, 2008 | — | — |
| Shurley RR 1C #742-435-38833 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,350 | Feb 4, 2008 | — | — |
| Jones Ranch #30942-435-38854 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,978 | Feb 4, 2008 | — | — |
| Jones Ranch #31042-435-38855 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,108 | Feb 4, 2008 | — | — |
| Shannon 52 #2142-435-38856 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,025 | Feb 4, 2008 | — | — |
| Shannon 52 #2242-435-38857 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,025 | Feb 4, 2008 | — | — |
| University 56-18 #542-105-40535 | Upp Operating LLC | Crockett, TXOzona NE. (Canyon 7520) | ActiveGas | 8,750 | Feb 2, 2008 | — | — |
| University 56 19 #142-105-40536 | Upp Operating LLC | Crockett, TXOzona NE. (Canyon 7520) | ActiveGas | 8,750 | Feb 2, 2008 | — | — |
| Hudson #5HHZ42-251-32573 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,146 | Feb 2, 2008 | — | — |
| Hudson Unit #6HHZ42-251-32574 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,109 | Feb 2, 2008 | — | — |
| Davis F #1942-435-38852 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | Temporarily abandonedGas | 5,842 | Feb 1, 2008 | — | — |
| Ferguson Foundation #3HHZ42-251-32564 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,240 | Jan 31, 2008 | — | — |
| Ferguson Foundation #4HHZ42-251-32567 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,199 | Jan 31, 2008 | — | — |
| Ferguson Foundation #5HHZ42-251-32568 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,232 | Jan 31, 2008 | — | — |
| U.S. Lime B #23HHZ42-251-32556 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,200 | Jan 30, 2008 | — | — |
| Brown-Whitehead 41 #542-435-38817 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 9,400 | Jan 30, 2008 | — | — |
| Brown-Whitehead 41 #442-435-38823 | Upp Operating LLC | Sutton, TXWhitehead (Strawn) | ActiveGas | 9,400 | Jan 30, 2008 | — | — |
| Fleet Unit #11HHZ42-251-32548 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,063 | Jan 29, 2008 | — | — |