| Simmons 71 #942-435-37347 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 7,859 | Mar 21, 2005 | — | — |
| Canyon Ranch #2077S42-435-37348 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 6,600 | Mar 21, 2005 | — | — |
| Vander Stucken #50142-435-37218 | Zephyr Lone Star Oper Co. L.L.C. only | Sutton, TXSawyer (Canyon) | PluggedGas | 3,400 | Mar 18, 2005 | — | — |
| Wilson Duke #178342-435-37330 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 8,450 | Mar 16, 2005 | — | — |
| Wilson Duke #176642-435-37331 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,350 | Mar 16, 2005 | — | — |
| Wilson Duke #183342-435-37332 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 9,000 | Mar 16, 2005 | — | — |
| Wilson Duke #184642-435-37333 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,850 | Mar 16, 2005 | — | — |
| Wilson Duke #176442-435-37334 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,500 | Mar 16, 2005 | — | — |
| Wilson Duke #183542-435-37335 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,950 | Mar 16, 2005 | — | — |
| Wilson Duke #160242-435-37336 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,200 | Mar 16, 2005 | — | — |
| Wilson Duke 185 #1142-435-37337 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 9,227 | Mar 16, 2005 | — | — |
| Wilson Duke 185 #1242-435-37338 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 9,000 | Mar 16, 2005 | — | — |
| Valliant L. R. #30342-435-37339 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,650 | Mar 16, 2005 | — | — |
| Hill-Valliant L. T. a #342-435-37340 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,810 | Mar 16, 2005 | — | — |
| Hill-Valliant L. R. a #542-435-37341 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,703 | Mar 16, 2005 | — | — |
| Hill-Valliant L. R. B #442-435-37342 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,568 | Mar 16, 2005 | — | — |
| Brown 79 #542-435-37324 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 5,076 | Mar 14, 2005 | — | — |
| Mayer Ranch M #120442-435-37325 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,056 | Mar 14, 2005 | — | — |
| Shurley RR 1C #242-435-37326 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,260 | Mar 14, 2005 | — | — |
| Mayer Ranch a #242-435-37327 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,100 | Mar 14, 2005 | — | — |
| Shurley RR 1D #142-435-37328 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,200 | Mar 14, 2005 | — | — |
| Shurley RR 4B #342-435-37329 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,326 | Mar 14, 2005 | — | — |
| Mayer Edwin S. Jr C #30442-435-37322 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,000 | Mar 10, 2005 | — | — |
| Mayer Edwin S. Jr C #30542-435-37323 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,750 | Mar 10, 2005 | — | — |
| Thorp 19 #142-435-34817 | Upp Operating LLC only | Sutton, TXWhitehead (Strawn) | ActiveGas | 9,460 | Mar 9, 2005 | — | — |
| Davis #1442-435-37318 | Upp Operating LLC only | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,106 | Mar 8, 2005 | — | — |
| Davis #1542-435-37319 | Upp Operating LLC only | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,200 | Mar 8, 2005 | — | — |
| Hill-Fawcett Randee Trust E #542-435-37320 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,821 | Mar 8, 2005 | — | — |
| Randee Fawcett Trust C #2042-435-37321 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,750 | Mar 8, 2005 | — | — |
| Fawcett Randee Trust C #2342-435-37314 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,639 | Mar 7, 2005 | — | — |
| Fawcett Randee Trust C #1742-435-37315 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,663 | Mar 7, 2005 | — | — |
| Hill-Fawcett Randee Trust a #442-435-37316 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,798 | Mar 7, 2005 | — | — |
| Pfluger #870642-435-37317 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 5,095 | Mar 7, 2005 | — | — |
| Mayfield 39 #2542-435-37310 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,448 | Mar 4, 2005 | — | — |
| Mayfield 45 #2142-435-37313 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,551 | Mar 4, 2005 | — | — |
| Mayfield 39 #20 X42-435-37312 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,375 | Mar 3, 2005 | — | — |
| Hill-Valliant L.R. a #242-435-37309 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,722 | Feb 25, 2005 | — | — |
| Mayfield 34 #2242-435-37291 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,550 | Feb 23, 2005 | — | — |
| Mayfield 34 #2042-435-37293 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,500 | Feb 23, 2005 | — | — |
| Mayfield 34 #2142-435-37294 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 8,500 | Feb 23, 2005 | — | — |
| Mayfield 34 #2342-435-37295 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,650 | Feb 23, 2005 | — | — |
| Mayfield 45 #1842-435-37297 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,510 | Feb 23, 2005 | — | — |
| Mayfield 45 #1942-435-37298 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,550 | Feb 23, 2005 | — | — |
| Mayfield 45 #2042-435-37299 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,225 | Feb 23, 2005 | — | — |
| Mayfield 39 #2442-435-37300 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,650 | Feb 23, 2005 | — | — |
| Mayfield 39 #2142-435-37301 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,450 | Feb 23, 2005 | — | — |
| Mayfield 39 #2242-435-37302 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,450 | Feb 23, 2005 | — | — |
| Mayfield 39 #2342-435-37303 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,500 | Feb 23, 2005 | — | — |
| Carta 114 #1242-435-37304 | Robert C. Brower LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 6,663 | Feb 23, 2005 | — | — |
| Nobles a #142-435-37305 | Samson Lone Star LPpermitted by · no operator of record | Sutton, TXDenison (Strawn) | Not on schedule | 10,000 | Feb 23, 2005 | — | — |