| Canyon Ranch 112 #13E42-137-32040 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 6,814 | Jan 5, 2010 | — | — |
| Canyon Ranch #9111E42-137-32042 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 6,804 | Jan 5, 2010 | — | — |
| Shannon 52 #2342-435-39248 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,160 | Jan 5, 2010 | — | — |
| Lancaster 155 #1042-435-39251 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,670 | Jan 5, 2010 | — | — |
| Rice Loh Unit #4HHZ42-439-34734 | Upp Operating LLC | Tarrant, TXNewark East (Barnett Shale) | Temporarily abandonedGas | 8,567 | Jan 5, 2010 | — | — |
| Canyon Ranch #9013E42-137-32038 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 7,096 | Jan 4, 2010 | — | — |
| Marigliano #160142-413-32619 | Upp Operating LLC | Schleicher, TXSawyer (Strawn North) | ActiveGas | 8,801 | Jan 4, 2010 | — | — |
| Sawyer-Jones 190 #1342-435-39250 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 9,000 | Jan 4, 2010 | — | — |
| Lonestar Unit #9HHZ42-439-34731 | Upp Operating LLC | Tarrant, TXNewark East (Barnett Shale) | ActiveGas | 8,701 | Dec 31, 2009 | — | — |
| Ford Unit #4HHZ42-251-33845 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,867 | Dec 30, 2009 | — | — |
| Diebitsch 70 #1742-435-39247 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,200 | Dec 30, 2009 | — | — |
| Atkins Andrews #119942-413-32616 | Upp Operating LLC | Schleicher, TXSonora (Canyon Upper) | ActiveGas | 7,093 | Dec 29, 2009 | — | — |
| Mayer Edwin S. Jr. N #1842-413-32617 | Upp Operating LLC | Schleicher, TXSawyer (Strawn North) | ActiveGas | 8,591 | Dec 28, 2009 | — | — |
| Jeffers AR #942-413-32615 | Upp Operating LLC | Schleicher, TXSawyer (Strawn North) | ActiveGas | 8,300 | Dec 21, 2009 | — | — |
| Canyon Ranch 113 #12E42-137-32037 | Upp Operating LLC | Edwards, TXSawyer (Canyon) | ActiveGas | 6,687 | Dec 17, 2009 | — | — |
| Nicks Gerald 5 #1242-435-39246 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,738 | Dec 17, 2009 | — | — |
| Ervin Unit #5HHZ42-439-34700 | Upp Operating LLC | Tarrant, TXNewark East (Barnett Shale) | ActiveGas | 8,261 | Dec 17, 2009 | — | — |
| Trulove Unit #6 HHZ42-251-33789 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,392 | Dec 15, 2009 | — | — |
| Trulove Unit #8 HHZ42-251-33790 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,161 | Dec 15, 2009 | — | — |
| Trulove Unit #9 HHZ42-251-33791 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,344 | Dec 15, 2009 | — | — |
| Trulove Unit #10 HHZ42-251-33792 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,131 | Dec 15, 2009 | — | — |
| Trulove Unit #7 HHZ42-251-33795 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,263 | Dec 15, 2009 | — | — |
| Lake Alvarado Unit #8HHZ42-251-33837 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,891 | Dec 15, 2009 | — | — |
| Hill-Rousselot B #242-413-32614 | Upp Operating LLC | Schleicher, TXSawyer (Strawn North) | ActiveGas | 8,602 | Dec 14, 2009 | — | — |
| Ledezma Unit #5HHZ42-251-33835 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,014 | Dec 11, 2009 | — | — |
| Ledezma Unit #6HHZ42-251-33836 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,854 | Dec 11, 2009 | — | — |
| Tolbert Unit #12HHZ42-251-33831 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,225 | Dec 10, 2009 | — | — |
| Simmons 3 #242-435-39245 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,200 | Dec 10, 2009 | — | — |
| Mayer Edwin S. Jr. N #1542-413-32613 | Upp Operating LLC | Schleicher, TXSawyer (Canyon) | ActiveGas | 8,609 | Dec 8, 2009 | — | — |
| Rieck Unit #1HHZ42-497-36977 | Upp Operating LLC | Wise, TXNewark East (Barnett Shale) | ActiveGas | 7,077 | Dec 7, 2009 | — | — |
| Mittel R. H. #642-435-39244 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 7,050 | Dec 4, 2009 | — | — |
| Simmons 3 #442-435-39238 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,150 | Dec 3, 2009 | — | — |
| Mittel #127242-435-39243 | Upp Operating LLC | Sutton, TXFawcett (Wolfcamp) | ActiveGas | 6,968 | Dec 3, 2009 | — | — |
| Mayer Edwin S. Jr. N #1642-413-32612 | Upp Operating LLC | Schleicher, TXSawyer (Canyon) | ActiveGas | 7,685 | Dec 2, 2009 | — | — |
| Cauthorn 17 #642-435-39239 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,250 | Dec 2, 2009 | — | — |
| Mayer Ranch 40 #642-435-39240 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,650 | Dec 2, 2009 | — | — |
| Holman #261142-435-39242 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,193 | Dec 2, 2009 | — | — |
| Wilson Duke #341742-435-39241 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,800 | Dec 1, 2009 | — | — |
| Reinhardt 6 #1742-435-39237 | Upp Operating LLC | Sutton, TXSawyer (Leonard) | ActiveGas | 3,100 | Nov 30, 2009 | — | — |
| Durbin Unit #3HHZ42-251-33818 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | Temporarily abandonedGas | 7,608 | Nov 25, 2009 | — | — |
| Durbin Unit #4HHZ42-251-33819 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | Temporarily abandonedGas | 7,546 | Nov 25, 2009 | — | — |
| Meador 178 #1142-413-32610 | Upp Operating LLC | Schleicher, TXSawyer (Leonard) | Temporarily abandonedGas | 2,519 | Nov 25, 2009 | — | — |
| Cauthorn Ranch 134 #342-435-39235 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,800 | Nov 25, 2009 | — | — |
| Deberry Heirs #1442-435-39236 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,627 | Nov 25, 2009 | — | — |
| Wilson Duke 177 #1042-435-39234 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 9,100 | Nov 24, 2009 | — | — |
| Deberry Heirs #1542-435-39231 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,735 | Nov 18, 2009 | — | — |
| Holman #261042-435-39232 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,096 | Nov 18, 2009 | — | — |
| Lake Alvarado Unit #7HHZ42-251-33808 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 7,692 | Nov 17, 2009 | — | — |
| Mayer Ranch 35 #1642-435-39229 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,713 | Nov 16, 2009 | — | — |
| Holman 25 #342-435-39230 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,103 | Nov 16, 2009 | — | — |