| Meeks #4 HHZ42-251-31823 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,520 | May 19, 2007 | — | — |
| University 56-22 #542-105-40318 | Upp Operating LLC | Crockett, TXOzona NE. (Canyon 7520) | ActiveGas | 8,822 | May 18, 2007 | — | — |
| Jones Ranch #155342-435-38502 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 7,510 | May 18, 2007 | — | — |
| Canyon Ranch #1128E42-137-31902 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | Temporarily abandonedGas | 6,857 | May 17, 2007 | — | — |
| King #9HHZ42-251-31805 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,272 | May 17, 2007 | — | — |
| Mildred #2HHZ42-251-31806 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | PluggedGas | 10,000 | May 17, 2007 | — | — |
| King #11HHZ42-251-31808 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,243 | May 17, 2007 | — | — |
| Geren #13 HHZ42-251-31794 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,429 | May 16, 2007 | — | — |
| Mayer Edwin S. Jr. F #842-413-32461 | Upp Operating LLC | Schleicher, TXSawyer (Strawn North) | ActiveGas | 8,450 | May 16, 2007 | — | — |
| Duke Wilson 173 #1342-435-38504 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 9,004 | May 16, 2007 | — | — |
| Carolyn Teich #1HHZ42-251-31777 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,528 | May 15, 2007 | — | — |
| Wilson Duke 189 #1742-435-38482 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 9,002 | May 15, 2007 | — | — |
| Wilson Duke 189 #1842-435-38483 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,894 | May 15, 2007 | — | — |
| Wilson Duke 172 #1942-435-38484 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 9,000 | May 15, 2007 | — | — |
| Mayer Edwin S. Jr. K #1142-435-38500 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,036 | May 15, 2007 | — | — |
| Green #2 HHZ42-497-36262 | Upp Operating LLC | Wise, TXNewark East (Barnett Shale) | ActiveGas | 7,104 | May 15, 2007 | — | — |
| Shurley RR 4A #442-435-38438 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,202 | May 14, 2007 | — | — |
| Mayer Ranch H #80342-435-38496 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,253 | May 14, 2007 | — | — |
| Mayer Ranch LLL #142242-435-38499 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,350 | May 14, 2007 | — | — |
| Mittel R. H. #142-435-38503 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 7,113 | May 14, 2007 | — | — |
| Carolyn Teich #2HHZ42-251-31778 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,505 | May 12, 2007 | — | — |
| Teich Carolyn #4HHZ42-251-31779 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,550 | May 12, 2007 | — | — |
| Teich Carolyn #5HHZ42-251-31780 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,530 | May 12, 2007 | — | — |
| Carolyn Teich Unit #6HHZ42-251-31781 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,512 | May 12, 2007 | — | — |
| Teich Carolyn #7HHZ42-251-31782 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,558 | May 12, 2007 | — | — |
| Carolyn Teich #8HHZ42-251-31783 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,510 | May 12, 2007 | — | — |
| Teich Carolyn #3HHZ42-251-31784 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,539 | May 12, 2007 | — | — |
| Fricks #6HHZ42-251-31770 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,583 | May 11, 2007 | — | — |
| Fricks #7 HHZ42-251-31771 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,568 | May 11, 2007 | — | — |
| Shurley 165 #1642-435-38429 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,367 | May 11, 2007 | — | — |
| Canyon Ranch #1066E42-137-31894 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 6,907 | May 10, 2007 | — | — |
| Canyon Ranch #1126E42-137-31903 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 6,804 | May 10, 2007 | — | — |
| Shurley 165 #1442-435-38428 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,499 | May 10, 2007 | — | — |
| Shurley 165 #1542-435-38430 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,300 | May 10, 2007 | — | — |
| Shurley RR 1E #742-435-38434 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,109 | May 10, 2007 | — | — |
| Shurley RR 1E #842-435-38435 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,600 | May 10, 2007 | — | — |
| Shurley RR 1E #942-435-38436 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,109 | May 10, 2007 | — | — |
| Shurley 148 #1542-435-38443 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,102 | May 10, 2007 | — | — |
| Shurley 148 #1642-435-38444 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,100 | May 10, 2007 | — | — |
| Morriss Brothers Ranch I 101 #342-435-38493 | Upp Operating LLC | Sutton, TXWhitehead (Strawn) | ActiveGas | 9,500 | May 10, 2007 | — | — |
| Morriss Brothers Ranch I 101 #442-435-38494 | Upp Operating LLC | Sutton, TXWhitehead (Strawn) | ActiveGas | 9,500 | May 10, 2007 | — | — |
| Canyon Ranch 114 #15S42-435-38497 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,635 | May 10, 2007 | — | — |
| Canyon Ranch #905E42-137-31896 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 6,927 | May 9, 2007 | — | — |
| Canyon Ranch #9011E42-137-31899 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 7,102 | May 9, 2007 | — | — |
| Canyon Ranch #9010E42-137-31900 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 7,015 | May 9, 2007 | — | — |
| Canyon Ranch #909E42-137-31901 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 7,022 | May 9, 2007 | — | — |
| Hughes #4 HHZ42-251-31768 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,716 | May 9, 2007 | — | — |
| Canyon Ranch 114 #16S42-435-38495 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 6,727 | May 9, 2007 | — | — |
| Canyon Ranch 114 #17S42-435-38498 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,690 | May 9, 2007 | — | — |
| Canyon Ranch #1065E42-137-31891 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 6,718 | May 8, 2007 | — | — |