| Canyon Ranch #1066X42-435-38213 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,900 | Nov 21, 2006 | — | — |
| Hill-Mayer Edwin S. Jr. AA #442-435-38216 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,062 | Nov 21, 2006 | — | — |
| Shurley 98 #2142-435-38210 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,700 | Nov 20, 2006 | — | — |
| Mayer Ranch 35 #242-435-38214 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,470 | Nov 20, 2006 | — | — |
| Glasscock H. E. et al #290942-435-38215 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,675 | Nov 20, 2006 | — | — |
| Parmer #2SF42-413-32416 | Upp Operating LLC | Schleicher, TXOzona NE. (Canyon 7520) | ActiveGas | 8,276 | Nov 17, 2006 | — | — |
| Parmer #3SF42-413-32417 | Upp Operating LLC | Schleicher, TXOzona NE. (Canyon 7520) | ActiveGas | 8,300 | Nov 17, 2006 | — | — |
| Parmer #1SF42-413-32418 | Upp Operating LLC | Schleicher, TXOzona NE. (Canyon 7520) | ActiveGas | 8,200 | Nov 17, 2006 | — | — |
| Parmer #4SF42-413-32419 | Upp Operating LLC | Schleicher, TXOzona NE. (Canyon 7520) | ActiveGas | 8,301 | Nov 17, 2006 | — | — |
| Mittel #127142-435-38209 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,409 | Nov 15, 2006 | — | — |
| Shurley 94 #1942-435-38207 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,294 | Nov 14, 2006 | — | — |
| Jones Ranch 156 #442-435-38208 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,720 | Nov 14, 2006 | — | — |
| Rayburn #2 HHZ42-251-31181 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,182 | Nov 13, 2006 | — | — |
| Shurley 99 #2142-435-38205 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,525 | Nov 13, 2006 | — | — |
| Nobles Ranch a #242-435-38178 | Upp Operating LLC | Sutton, TXWhitehead (Strawn) | ActiveGas | 9,400 | Nov 9, 2006 | — | — |
| Griffin #1RHHZ42-251-31316 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,218 | Nov 8, 2006 | — | — |
| Mayer 47 #1142-435-36676 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,400 | Nov 6, 2006 | — | — |
| Fields 14 #1442-435-38135 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 5,781 | Nov 3, 2006 | — | — |
| Morriss 83 #7D42-435-38204 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveInjection | 8,696 | Nov 1, 2006 | — | — |
| King #5HHZ42-251-31300 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 6,502 | Oct 31, 2006 | — | — |
| Sawyer-Jones #190642-435-37260 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,943 | Oct 31, 2006 | — | — |
| County Line #2HHZ42-251-31276 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,263 | Oct 27, 2006 | — | — |
| County Line #3 HHZ42-251-31277 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,286 | Oct 27, 2006 | — | — |
| County Line Unit #5HHZ42-251-31279 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,294 | Oct 27, 2006 | — | — |
| County Line #6HHZ42-251-31280 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | PluggedGas | 9,000 | Oct 27, 2006 | — | — |
| Fields 55 #5SD42-435-36236 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveInjection | 7,600 | Oct 27, 2006 | — | — |
| Canyon Ranch #504S42-435-38197 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 4,325 | Oct 27, 2006 | — | — |
| Canyon Ranch #408S42-435-38198 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 4,300 | Oct 27, 2006 | — | — |
| Canyon Ranch #204S42-435-38199 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 5,319 | Oct 27, 2006 | — | — |
| Canyon Ranch #107S42-435-38200 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 5,324 | Oct 27, 2006 | — | — |
| Mayer Edwin S. Jr. #40442-435-38163 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,122 | Oct 26, 2006 | — | — |
| Hudspeth 54 #1042-435-38196 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,572 | Oct 24, 2006 | — | — |
| Shurley 110 #2442-435-38195 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,802 | Oct 23, 2006 | — | — |
| Wilson Duke #341542-435-38185 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,025 | Oct 20, 2006 | — | — |
| Hampton Gas Unit #1HHZ42-497-36156 | Upp Operating LLC | Wise, TXNewark East (Barnett Shale) | ActiveGas | 7,780 | Oct 19, 2006 | — | — |
| Sprimont Unit #1HHZ42-251-31257 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,276 | Oct 18, 2006 | — | — |
| Sprimont #2HHZ42-251-31258 | Upp Operating LLC | Johnson, TXNewark East (Barnett Shale) | ActiveGas | 8,276 | Oct 18, 2006 | — | — |
| Ward J. W. 118 #1742-435-38191 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,913 | Oct 18, 2006 | — | — |
| Ward J. W. 118 #2142-435-38192 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,945 | Oct 18, 2006 | — | — |
| Ward J. W. 118 #2442-435-38193 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 7,802 | Oct 18, 2006 | — | — |
| Walking T Ranch #3 HHZ42-139-30480 | Upp Operating LLC | Ellis, TXNewark East (Barnett Shale) | ActiveGas | 8,374 | Oct 17, 2006 | — | — |
| Walking T Ranch #4HHZ42-139-30481 | Upp Operating LLC | Ellis, TXNewark East (Barnett Shale) | ActiveGas | 8,241 | Oct 17, 2006 | — | — |
| Walking T Ranch #5HHZ42-139-30482 | Upp Operating LLC | Ellis, TXNewark East (Barnett Shale) | ActiveGas | 8,412 | Oct 17, 2006 | — | — |
| Ward J. W. 118 #1642-435-38187 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,917 | Oct 17, 2006 | — | — |
| Nicks Gerald 5 #142-435-38188 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,590 | Oct 17, 2006 | — | — |
| Hudspeth 8 #142-435-38189 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 9,017 | Oct 17, 2006 | — | — |
| Nicks Gerald 7 #142-435-38190 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,636 | Oct 17, 2006 | — | — |
| Wilson Duke State 152 #342-435-38181 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,990 | Oct 13, 2006 | — | — |
| Hudspeth 1017 #542-435-38184 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 9,075 | Oct 13, 2006 | — | — |
| Shurley 110 #2342-435-38186 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 6,873 | Oct 13, 2006 | — | — |