| Mayer 49 #842-435-38151 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,088 | Sep 20, 2006 | — | — |
| Hill-Rousselot D #342-413-32398 | Upp Operating LLC | Schleicher, TXSawyer (Strawn North) | ActiveGas | 8,606 | Sep 19, 2006 | — | — |
| Meckel #9142-435-38138 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,121 | Sep 19, 2006 | — | — |
| Epps H. C. 38 #442-435-38144 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,675 | Sep 19, 2006 | — | — |
| Epps H. C. 38 #542-435-38145 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,822 | Sep 19, 2006 | — | — |
| Epps H. C. 38 #842-435-38146 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,754 | Sep 19, 2006 | — | — |
| Rimel #342-435-38149 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,950 | Sep 19, 2006 | — | — |
| Morriss Brothers #542-435-38133 | Upp Operating LLC | Sutton, TXWhitehead (Strawn) | ActiveGas | 9,300 | Sep 18, 2006 | — | — |
| Meckel #9342-435-38136 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,219 | Sep 18, 2006 | — | — |
| Meckel #9242-435-38137 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,250 | Sep 18, 2006 | — | — |
| Meckel #9042-435-38139 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,122 | Sep 18, 2006 | — | — |
| Meckel #8942-435-38140 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | Temporarily abandonedGas | 6,312 | Sep 18, 2006 | — | — |
| Meckel #8742-435-38141 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,027 | Sep 18, 2006 | — | — |
| Meckel #8642-435-38142 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,023 | Sep 18, 2006 | — | — |
| Meckel #8842-435-38143 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | Temporarily abandonedGas | 6,318 | Sep 18, 2006 | — | — |
| Morriss Brothers E #30242-435-38134 | Upp Operating LLC | Sutton, TXWhitehead (Strawn) | ActiveGas | 9,400 | Sep 15, 2006 | — | — |
| Clayton 7 #142-105-40098 | Upp Operating LLC | Crockett, TXOzona NE. (Canyon 7520) | ActiveGas | 8,707 | Sep 14, 2006 | — | — |
| Beckham #1HHZ42-251-31185 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,695 | Sep 12, 2006 | — | — |
| Whitehead 2 #742-435-38131 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 9,000 | Sep 12, 2006 | — | — |
| Aldwell Ranch B 143 #242-435-38132 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,978 | Sep 12, 2006 | — | — |
| Mayfield 41 #442-435-38128 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,490 | Sep 11, 2006 | — | — |
| Hill-Aldwell Winnie R. Trust E #442-435-38126 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,900 | Sep 8, 2006 | — | — |
| Mayfield 41 #742-435-38127 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,650 | Sep 8, 2006 | — | — |
| Acu #1 HHZ42-251-30264 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,120 | Sep 6, 2006 | — | — |
| Kelly 102 #2542-435-37686 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,515 | Sep 6, 2006 | — | — |
| Kelly 102 #2442-435-37687 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,506 | Sep 6, 2006 | — | — |
| Kelly 102 #2342-435-37688 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,467 | Sep 6, 2006 | — | — |
| Kelly 102 #1742-435-37689 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,477 | Sep 6, 2006 | — | — |
| Kelly 102 #1842-435-37690 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,545 | Sep 6, 2006 | — | — |
| Kelly 102 #2042-435-37692 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,568 | Sep 6, 2006 | — | — |
| Kelly 102 #2142-435-37693 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 6,576 | Sep 6, 2006 | — | — |
| Kelly 102 #2242-435-37694 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,473 | Sep 6, 2006 | — | — |
| Mayfield 33 #2242-435-38119 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,573 | Aug 29, 2006 | — | — |
| Hill-Ray May M. F #342-435-38121 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 9,300 | Aug 29, 2006 | — | — |
| Deberry-Halbert Unit #2142-435-38118 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,753 | Aug 28, 2006 | — | — |
| Deberry a #9242-435-38120 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | Temporarily abandonedGas | 6,625 | Aug 28, 2006 | — | — |
| Steen #9842-435-38122 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 5,805 | Aug 28, 2006 | — | — |
| Steen #9642-435-38123 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 5,800 | Aug 28, 2006 | — | — |
| Steen #9742-435-38124 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,113 | Aug 28, 2006 | — | — |
| Ward RC #842-435-38125 | Upp Operating LLC | Sutton, TXFawcett (Wolfcamp) | ActiveGas | 7,300 | Aug 28, 2006 | — | — |
| Ward #6342-435-38062 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,658 | Aug 25, 2006 | — | — |
| Bell J. C. Estate #1HHZ42-251-31152 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,866 | Aug 24, 2006 | — | — |
| Clements #5 HHZ42-251-31153 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,862 | Aug 24, 2006 | — | — |
| Clements #7 HHZ42-251-31157 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,921 | Aug 24, 2006 | — | — |
| Mayer Edwin S. Jr. #30442-435-38115 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,035 | Aug 24, 2006 | — | — |
| Bowerman #3HHZ42-251-31142 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,553 | Aug 23, 2006 | — | — |
| Fowler #1HHZ42-251-31145 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,833 | Aug 21, 2006 | — | — |
| Ward J. W. 118 #2342-435-38072 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 7,000 | Aug 21, 2006 | — | — |
| Hill-Mayer ZZ #442-435-38107 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,185 | Aug 21, 2006 | — | — |
| Ward #6742-435-38048 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,745 | Aug 18, 2006 | — | — |