| Galbreath 66 #2042-435-38746 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,150 | Nov 6, 2007 | — | — |
| Galbreath 66 #2142-435-38750 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,100 | Nov 6, 2007 | — | — |
| University 57-23 #342-413-32486 | Upp Operating LLC | Schleicher, TXOzona NE. (Canyon 7520) | ActiveGas | 8,350 | Nov 1, 2007 | — | — |
| Brown Jack D #342-435-38590 | Upp Operating LLC | Sutton, TXWhitehead (Strawn) | ActiveGas | 9,500 | Nov 1, 2007 | — | — |
| Galbreath 66 #1942-435-38747 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 6,119 | Nov 1, 2007 | — | — |
| Mayer #601142-435-38744 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,400 | Oct 31, 2007 | — | — |
| Canyon Ranch 113 #10E42-137-31930 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 6,819 | Oct 30, 2007 | — | — |
| Shurley 36 #1542-435-38723 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,943 | Oct 30, 2007 | — | — |
| Shurley 36 #1642-435-38724 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,025 | Oct 30, 2007 | — | — |
| Lancaster 155 #742-435-38743 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 7,511 | Oct 26, 2007 | — | — |
| Shurley RR 4C #542-435-38721 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,020 | Oct 25, 2007 | — | — |
| Shurley RR 4C #442-435-38722 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,112 | Oct 25, 2007 | — | — |
| Fleet #10HHZ42-251-32237 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,046 | Oct 24, 2007 | — | — |
| Kelly 126 #2842-435-38716 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 6,825 | Oct 23, 2007 | — | — |
| Mayer Ranch Q #150342-435-38730 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,350 | Oct 23, 2007 | — | — |
| Shannon 51 #1542-435-38736 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,109 | Oct 23, 2007 | — | — |
| Mayer Ranch FFF #98342-435-38737 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,125 | Oct 23, 2007 | — | — |
| Mayer Ranch FFF #98442-435-38738 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,125 | Oct 23, 2007 | — | — |
| Canyon Ranch #2085S42-435-38739 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 5,885 | Oct 23, 2007 | — | — |
| Meckel a #7342-435-38740 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 7,350 | Oct 23, 2007 | — | — |
| Mittel R. H. #942-435-38741 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 7,106 | Oct 23, 2007 | — | — |
| Mittel R. H. #1042-435-38742 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 7,098 | Oct 23, 2007 | — | — |
| Core Lab #5HHZ42-251-32314 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,594 | Oct 22, 2007 | — | — |
| Kelly 126 #2942-435-38715 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,925 | Oct 22, 2007 | — | — |
| Jeffers 28 B #342-413-32484 | Upp Operating LLC | Schleicher, TXSawyer (Canyon) | ActiveGas | 8,503 | Oct 19, 2007 | — | — |
| Canyon Ranch 114 #13S42-435-38735 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 6,815 | Oct 19, 2007 | — | — |
| Moss #2HHZ42-251-32311 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,383 | Oct 18, 2007 | — | — |
| Mayer Minnie H A #10242-435-38227 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,033 | Oct 18, 2007 | — | — |
| Glasscock 30 #142-435-38733 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,818 | Oct 18, 2007 | — | — |
| Bowden 44 #142-435-38734 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,900 | Oct 18, 2007 | — | — |
| Uta a Unit #1HHZ42-439-32749 | Upp Operating LLC | Tarrant, TXNewark East (Barnett Shale) | ActiveGas | 8,334 | Oct 16, 2007 | — | — |
| Rayburn Unit #11 HHZ42-251-32292 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,270 | Oct 15, 2007 | — | — |
| Rayburn Unit #12 HHZ42-251-32293 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,318 | Oct 15, 2007 | — | — |
| Sprimont #4HHZ42-251-32289 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,151 | Oct 12, 2007 | — | — |
| Geren #20HHZ42-251-32290 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,380 | Oct 12, 2007 | — | — |
| Nixon 177 #942-413-32471 | Upp Operating LLC | Schleicher, TXSawyer (Strawn North) | ActiveGas | 7,700 | Oct 12, 2007 | — | — |
| Hill-Mayer Edwin S. Jr. C #642-435-38719 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,110 | Oct 11, 2007 | — | — |
| Mayer Minnie H. C #542-435-38696 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,300 | Oct 10, 2007 | — | — |
| City of Godley Unit #4HHZ42-251-32117 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,615 | Oct 9, 2007 | — | — |
| Hill-Mayer Edwin S. Jr. P #742-435-38704 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,241 | Oct 9, 2007 | — | — |
| Owens #2HHZ42-251-32275 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,349 | Oct 8, 2007 | — | — |
| Mayer Ranch R #160242-435-38725 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,200 | Oct 8, 2007 | — | — |
| U.S. Lime a #20HHZ42-251-32273 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | Temporarily abandonedGas | 6,273 | Oct 5, 2007 | — | — |
| U.S. Lime a #21HHZ42-251-32274 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,232 | Oct 5, 2007 | — | — |
| Powell 23 #742-413-32483 | Upp Operating LLC | Schleicher, TXSawyer (Canyon) | ActiveGas | 8,500 | Oct 5, 2007 | — | — |
| Stevenson C Unit #4HHZ42-251-32268 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,145 | Oct 4, 2007 | — | — |
| Geren #17HHZ42-251-32263 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,342 | Oct 3, 2007 | — | — |
| Geren #18HHZ42-251-32264 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,414 | Oct 3, 2007 | — | — |
| Geren #19HHZ42-251-32265 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,380 | Oct 3, 2007 | — | — |
| Geren #16HHZ42-251-32266 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,394 | Oct 3, 2007 | — | — |