| Fleet Unit #12HHZ42-251-32549 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,917 | Jan 29, 2008 | — | — |
| Fleet Unit #13HHZ42-251-32551 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,071 | Jan 29, 2008 | — | — |
| Hudson #3HHZ42-251-32552 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,128 | Jan 29, 2008 | — | — |
| Caldwell #1HHZ42-251-32553 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,475 | Jan 29, 2008 | — | — |
| Hudson Unit #4HHZ42-251-32554 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,272 | Jan 29, 2008 | — | — |
| U.S. Lime B #22HHZ42-251-32555 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,212 | Jan 29, 2008 | — | — |
| Clements #10HHZ42-251-32539 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,805 | Jan 25, 2008 | — | — |
| Clements #11HHZ42-251-32540 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | Temporarily abandonedGas | 6,903 | Jan 25, 2008 | — | — |
| Clements #12HHZ42-251-32541 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,815 | Jan 25, 2008 | — | — |
| Oglesby 5 #342-413-32504 | Upp Operating LLC | Schleicher, TXSawyer (Strawn North) | ActiveGas | 8,400 | Jan 25, 2008 | — | — |
| Powell 23 #1042-413-32505 | Upp Operating LLC | Schleicher, TXSawyer (Strawn North) | ActiveGas | 8,385 | Jan 25, 2008 | — | — |
| Kelly 125 #3342-435-38847 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,675 | Jan 25, 2008 | — | — |
| Kelly 125 #3542-435-38848 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,892 | Jan 25, 2008 | — | — |
| Davis #2142-435-38853 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,225 | Jan 25, 2008 | — | — |
| Uta a Unit #3HHZ42-439-32998 | Upp Operating LLC | Tarrant, TXNewark East (Barnett Shale) | ActiveGas | 8,325 | Jan 25, 2008 | — | — |
| Beil #6HHZ42-251-32533 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,813 | Jan 24, 2008 | — | — |
| Kelly 125 #3142-435-38842 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,880 | Jan 24, 2008 | — | — |
| Kelly 125 #3042-435-38844 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,989 | Jan 24, 2008 | — | — |
| Kelly 125 #3242-435-38845 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,732 | Jan 24, 2008 | — | — |
| Kelly 124 #3242-435-38846 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,775 | Jan 24, 2008 | — | — |
| Kelly 124 #2942-435-38849 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,625 | Jan 24, 2008 | — | — |
| Shannon 51 #1842-435-38850 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,025 | Jan 24, 2008 | — | — |
| Shannon 51 #1742-435-38851 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,075 | Jan 24, 2008 | — | — |
| Versfelt #1HHZ42-221-31569 | Upp Operating LLC | Hood, TXNewark East (Barnett Shale) | ActiveGas | 6,004 | Jan 23, 2008 | — | — |
| Spring Valley #1HHZ42-251-32531 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,918 | Jan 23, 2008 | — | — |
| Morriss 62 #742-435-38843 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,860 | Jan 23, 2008 | — | — |
| Ward John a #942-435-38838 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,616 | Jan 22, 2008 | — | — |
| Kelly 125 #2842-435-38840 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,975 | Jan 22, 2008 | — | — |
| Kelly 125 #2942-435-38841 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,863 | Jan 22, 2008 | — | — |
| Reynolds #1HHZ42-251-32523 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,101 | Jan 17, 2008 | — | — |
| Reynolds #2HHZ42-251-32524 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,255 | Jan 17, 2008 | — | — |
| Reynolds #3HHZ42-251-32525 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,081 | Jan 17, 2008 | — | — |
| Reynolds #4HHZ42-251-32527 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,251 | Jan 17, 2008 | — | — |
| University 54-24 #542-413-32503 | Upp Operating LLC | Schleicher, TXOzona NE. (Canyon 7520) | ActiveGas | 8,355 | Jan 17, 2008 | — | — |
| Whitehead 6 #542-435-38821 | Upp Operating LLC | Sutton, TXWhitehead (Strawn) | ActiveGas | 9,093 | Jan 17, 2008 | — | — |
| Whitehead 6 #442-435-38822 | Upp Operating LLC | Sutton, TXWhitehead (Strawn) | ActiveGas | 9,200 | Jan 17, 2008 | — | — |
| Whitehead 6 #742-435-38825 | Upp Operating LLC | Sutton, TXWhitehead (Strawn) | ActiveGas | 9,200 | Jan 17, 2008 | — | — |
| Ward John a #1042-435-38834 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,928 | Jan 17, 2008 | — | — |
| Morriss 63 #842-435-38839 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 5,925 | Jan 17, 2008 | — | — |
| Ward 114 #2542-435-38835 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 7,900 | Jan 15, 2008 | — | — |
| Mayer Ranch 35 #1042-435-38837 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,625 | Jan 15, 2008 | — | — |
| Canyon Ranch 107 #15E42-137-31937 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 6,760 | Jan 14, 2008 | — | — |
| Canyon Ranch 107 #16E42-137-31938 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 6,753 | Jan 14, 2008 | — | — |
| Wilson Duke 171 #1842-435-38783 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,550 | Jan 14, 2008 | — | — |
| Wilson Duke 171 #1942-435-38784 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,526 | Jan 14, 2008 | — | — |
| Wilson Duke 171 #2042-435-38785 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,900 | Jan 14, 2008 | — | — |
| Wilson Duke 171 #2142-435-38786 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,635 | Jan 14, 2008 | — | — |
| Wilson Duke 171 #2242-435-38787 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,650 | Jan 14, 2008 | — | — |
| Wilson Duke 171 #2342-435-38788 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,521 | Jan 14, 2008 | — | — |
| Wilson Duke 171 #2442-435-38790 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,574 | Jan 14, 2008 | — | — |