| Heffner #4HHZ42-251-32267 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | PluggedGas | 10,000 | Oct 3, 2007 | — | — |
| Wilson Duke 188 #2242-435-38705 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 9,000 | Oct 3, 2007 | — | — |
| University 56-22 #642-105-40442 | Upp Operating LLC | Crockett, TXOzona NE. (Canyon 7520) | ActiveGas | 8,750 | Oct 2, 2007 | — | — |
| Geren #14HHZ42-251-32255 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,395 | Sep 28, 2007 | — | — |
| Geren #15HHZ42-251-32256 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,319 | Sep 28, 2007 | — | — |
| Diebitsch 70 #1242-435-38718 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,000 | Sep 28, 2007 | — | — |
| Shannon 52 #1942-435-38709 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,050 | Sep 27, 2007 | — | — |
| Kelly 125 #3642-435-38714 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,900 | Sep 27, 2007 | — | — |
| Wilson Duke #211442-435-38684 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,900 | Sep 26, 2007 | — | — |
| Shannon 51 #1642-435-38706 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,125 | Sep 26, 2007 | — | — |
| Sawyer-Jones 190 #1242-435-38707 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 9,002 | Sep 26, 2007 | — | — |
| Sawyer-Jones 190 #1142-435-38708 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 9,021 | Sep 26, 2007 | — | — |
| Diebitsch 70 #1342-435-38710 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,000 | Sep 26, 2007 | — | — |
| Simmons 72 #842-435-38711 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,050 | Sep 26, 2007 | — | — |
| Simmons 72 #1042-435-38712 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,050 | Sep 26, 2007 | — | — |
| Simmons 72 #942-435-38713 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,050 | Sep 26, 2007 | — | — |
| Hudson Unit #2HHZ42-251-32242 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,236 | Sep 25, 2007 | — | — |
| Hudson Unit #1HHZ42-251-32243 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,135 | Sep 25, 2007 | — | — |
| Little Buddy #4HHZ42-251-32247 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | Temporarily abandonedGas | 7,410 | Sep 25, 2007 | — | — |
| Shurley RR 8 #442-435-38678 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,025 | Sep 24, 2007 | — | — |
| Mayer Minnie H. a #10442-435-38703 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,075 | Sep 24, 2007 | — | — |
| Moran #2HHZ42-251-32235 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,265 | Sep 21, 2007 | — | — |
| Shurley RR 1C #542-435-38650 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,322 | Sep 21, 2007 | — | — |
| Shurley RR 1C #642-435-38651 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,278 | Sep 21, 2007 | — | — |
| Shurley RR 1C #342-435-38653 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,250 | Sep 21, 2007 | — | — |
| Canyon Ranch 114 #6S42-435-38699 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,726 | Sep 19, 2007 | — | — |
| Beckham #3HHZ42-251-32221 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,099 | Sep 18, 2007 | — | — |
| Beckham #4HHZ42-251-32222 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,900 | Sep 18, 2007 | — | — |
| Beckham Unit #2HHZ42-251-32228 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,944 | Sep 18, 2007 | — | — |
| Valliant #1342-435-38642 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,652 | Sep 18, 2007 | — | — |
| Wilson Duke #211142-435-38683 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 9,300 | Sep 18, 2007 | — | — |
| University 56-18 #442-105-40430 | Upp Operating LLC | Crockett, TXOzona NE. (Canyon 7520) | ActiveGas | 8,725 | Sep 17, 2007 | — | — |
| Hill-Vanderstucken a #542-435-38694 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,700 | Sep 17, 2007 | — | — |
| Espy 57 #1042-435-38697 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,029 | Sep 17, 2007 | — | — |
| Espy 56 #1742-435-38698 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 5,950 | Sep 17, 2007 | — | — |
| U.S. Lime #17HHZ42-251-32214 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | Temporarily abandonedGas | 6,293 | Sep 14, 2007 | — | — |
| U.S. Lime #18HHZ42-251-32225 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,283 | Sep 14, 2007 | — | — |
| U.S. Lime #19HHZ42-251-32226 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | Temporarily abandonedGas | 6,244 | Sep 14, 2007 | — | — |
| Hicks 23 #1742-435-38693 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,780 | Sep 14, 2007 | — | — |
| Wilson Duke 188 #2142-435-38692 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 9,002 | Sep 13, 2007 | — | — |
| Barron #8HHZ42-251-32212 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,432 | Sep 12, 2007 | — | — |
| Barron Unit #9HHZ42-251-32213 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,537 | Sep 12, 2007 | — | — |
| Hill-Mayer Edwin S. Jr. FF #342-435-38691 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,196 | Sep 12, 2007 | — | — |
| Hill Mayer Minnie HC #542-435-38646 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,300 | Sep 11, 2007 | — | — |
| Shurley RR 5 #442-435-38659 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,091 | Sep 11, 2007 | — | — |
| Shurley RR 5 #542-435-38660 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,200 | Sep 11, 2007 | — | — |
| Mayer Edwin S. Jr. #110442-435-38664 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 7,877 | Sep 11, 2007 | — | — |
| Parmer 29 #1142-413-32478 | Upp Operating LLC | Schleicher, TXOzona NE. (Canyon 7520) | ActiveGas | 8,650 | Sep 10, 2007 | — | — |
| Wilson Duke 188 #1942-435-38679 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 9,000 | Sep 10, 2007 | — | — |
| Wilson Duke 187 #1742-435-38680 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 9,101 | Sep 10, 2007 | — | — |