| Thornton Unit #1HHZ42-439-34817 | Upp Operating LLC | Tarrant, TXNewark East (Barnett Shale) | ActiveGas | 8,435 | Feb 9, 2010 | — | — |
| Canyon Ranch 110 #4E42-137-32060 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | Temporarily abandonedGas | 6,500 | Feb 8, 2010 | — | — |
| Mayfield S. B. #2542-137-32061 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 4,001 | Feb 8, 2010 | — | — |
| Fannin Farms a Unit #2HHZ42-439-34818 | Upp Operating LLC | Tarrant, TXNewark East (Barnett Shale) | ActiveGas | 8,199 | Feb 8, 2010 | — | — |
| Fannin Farms B Unit #3HHZ42-439-34819 | Upp Operating LLC | Tarrant, TXNewark East (Barnett Shale) | ActiveGas | 8,292 | Feb 8, 2010 | — | — |
| Canyon Ranch 112 #14E42-137-32056 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 6,721 | Feb 5, 2010 | — | — |
| Canyon Ranch 112 #15E42-137-32057 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 6,501 | Feb 5, 2010 | — | — |
| Canyon Ranch 112 #16E42-137-32059 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 6,500 | Feb 5, 2010 | — | — |
| Graham #30242-137-32053 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 4,807 | Feb 4, 2010 | — | — |
| Powell 23 #1242-413-32625 | Upp Operating LLC | Schleicher, TXSawyer (Strawn North) | ActiveGas | 8,450 | Feb 4, 2010 | — | — |
| Bloodworth 139 #1342-435-39264 | Upp Operating LLC | Sutton, TXSawyer (Leonard) | ActiveGas | 2,970 | Feb 4, 2010 | — | — |
| Mitchell #10842-137-32055 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 5,100 | Feb 3, 2010 | — | — |
| Canyon Ranch 112 #10E42-137-32043 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 6,580 | Feb 2, 2010 | — | — |
| Fannin Farms a Unit #1HHZ42-439-34803 | Upp Operating LLC | Tarrant, TXNewark East (Barnett Shale) | ActiveGas | 8,272 | Feb 1, 2010 | — | — |
| Fannin Farms a Unit #6HHZ42-439-34804 | Upp Operating LLC | Tarrant, TXNewark East (Barnett Shale) | ActiveGas | 8,219 | Feb 1, 2010 | — | — |
| Fannin Farms a Unit #7HHZ42-439-34805 | Upp Operating LLC | Tarrant, TXNewark East (Barnett Shale) | ActiveGas | 8,233 | Feb 1, 2010 | — | — |
| Fannin Farms B Unit #4HHZ42-439-34806 | Upp Operating LLC | Tarrant, TXNewark East (Barnett Shale) | ActiveGas | 8,288 | Feb 1, 2010 | — | — |
| Fannin Farms B Unit #5HHZ42-439-34807 | Upp Operating LLC | Tarrant, TXNewark East (Barnett Shale) | ActiveGas | 8,235 | Feb 1, 2010 | — | — |
| Mitchell #11042-137-32054 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | Temporarily abandonedGas | 5,108 | Jan 29, 2010 | — | — |
| Ford Unit #5HHZ42-251-33881 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,818 | Jan 29, 2010 | — | — |
| Ford Unit #6HHZ42-251-33882 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,868 | Jan 29, 2010 | — | — |
| Ford Unit #7HHZ42-251-33883 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,952 | Jan 29, 2010 | — | — |
| Spring Valley Unit #4HHZ42-251-33888 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,768 | Jan 29, 2010 | — | — |
| Spring Valley Unit #3HHZ42-251-33889 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,913 | Jan 29, 2010 | — | — |
| Mitchell #10742-137-32052 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 4,425 | Jan 27, 2010 | — | — |
| Canyon Ranch #9016E42-137-32041 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 6,105 | Jan 26, 2010 | — | — |
| Mayfield SB #2842-137-32048 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 3,617 | Jan 26, 2010 | — | — |
| Mitchell #11142-137-32049 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 4,425 | Jan 26, 2010 | — | — |
| Mayfield SB #3142-137-32047 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | Temporarily abandonedGas | 4,967 | Jan 25, 2010 | — | — |
| Spring Valley Unit #2HHZ42-251-33871 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,755 | Jan 22, 2010 | — | — |
| Texas Royalties Psa #3HHZ42-251-33865 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,888 | Jan 21, 2010 | — | — |
| Mayer Ranch 41 #742-435-39261 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,675 | Jan 21, 2010 | — | — |
| Mayer Ranch 35 #1542-435-39262 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,733 | Jan 21, 2010 | — | — |
| Mayer Edwin S. Jr. E #1342-413-32623 | Upp Operating LLC | Schleicher, TXSawyer (Strawn North) | ActiveGas | 8,400 | Jan 15, 2010 | — | — |
| Fawcett 130 #1342-435-39260 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,304 | Jan 15, 2010 | — | — |
| Ford Unit #2HHZ42-251-33863 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,897 | Jan 14, 2010 | — | — |
| Ford Unit #3HHZ42-251-33864 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,928 | Jan 14, 2010 | — | — |
| Becker #30242-435-39258 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,863 | Jan 14, 2010 | — | — |
| Uta C Unit #18HHZ42-439-34750 | Upp Operating LLC | Tarrant, TXNewark East (Barnett Shale) | ActiveGas | 8,377 | Jan 14, 2010 | — | — |
| Uta C Unit #23HHZ42-439-34752 | Upp Operating LLC | Tarrant, TXNewark East (Barnett Shale) | ActiveGas | 8,398 | Jan 14, 2010 | — | — |
| Canyon Ranch 112 #11E42-137-32039 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 6,920 | Jan 13, 2010 | — | — |
| Fawcett 130 #1442-435-39257 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,370 | Jan 12, 2010 | — | — |
| Canyon Ranch #9110E42-137-32046 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 6,862 | Jan 8, 2010 | — | — |
| Kelly 125 #3742-435-39253 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,120 | Jan 8, 2010 | — | — |
| Mayer Edwin S. Jr. B 38 #842-435-39255 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,700 | Jan 8, 2010 | — | — |
| Canyon Ranch #911E42-137-32044 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 6,800 | Jan 6, 2010 | — | — |
| Canyon Ranch #907E42-137-32045 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | Temporarily abandonedGas | 6,850 | Jan 6, 2010 | — | — |
| Mayer Edwin S. Jr. E #3042-413-32620 | Upp Operating LLC | Schleicher, TXSawyer (Canyon) | ActiveGas | 8,420 | Jan 6, 2010 | — | — |
| Mittel R. H. #1742-435-39249 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 7,060 | Jan 6, 2010 | — | — |
| Sawyer-Jones #140242-435-39252 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,804 | Jan 6, 2010 | — | — |