| Fawcett Randee Trust B #1842-435-37443 | Highmount Expl & Prod Texas LLC only | Sutton, TXSawyer (Canyon) | PluggedGas | 9,000 | May 23, 2005 | — | — |
| Randee Fawcett Trust B #1742-435-37444 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 8,756 | May 23, 2005 | — | — |
| Bobbie H. Fawcett #2142-435-37445 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 8,421 | May 23, 2005 | — | — |
| Randee Fawcett Trust #1842-435-37446 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,498 | May 23, 2005 | — | — |
| Randee Fawcett Trust #942-435-37447 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,791 | May 23, 2005 | — | — |
| Morriss 82 #642-435-37436 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 6,004 | May 20, 2005 | — | — |
| Shurley 111 #2242-435-37437 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 6,827 | May 20, 2005 | — | — |
| Randee Fawcett Trust #2442-435-37438 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 8,830 | May 20, 2005 | — | — |
| Arco-Phillips #231042-435-37439 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 9,250 | May 20, 2005 | — | — |
| Thomson #1442-435-37433 | Upp Operating LLC only | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,192 | May 17, 2005 | — | — |
| Duke Wilson 173 #1442-435-37432 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,950 | May 16, 2005 | — | — |
| Hudspeth 1 #1142-435-37434 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,726 | May 16, 2005 | — | — |
| Valliant L. R. #1642-435-37435 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,600 | May 16, 2005 | — | — |
| Morriss 64 #1642-435-37428 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 6,206 | May 11, 2005 | — | — |
| Morriss 64 #1042-435-37429 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 6,100 | May 11, 2005 | — | — |
| Morriss 64 #1242-435-37430 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 6,119 | May 11, 2005 | — | — |
| Hull #1042-435-37431 | Upp Operating LLC only | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,324 | May 11, 2005 | — | — |
| Vanderstucken Joe M. B #542-435-37420 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,700 | May 10, 2005 | — | — |
| Valliant L. R. #2142-435-37421 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,571 | May 10, 2005 | — | — |
| Duke Wilson 187 #1542-435-37422 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 9,150 | May 10, 2005 | — | — |
| Valliant L. R. #2742-435-37423 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,431 | May 10, 2005 | — | — |
| Valliant L. R. #1242-435-37424 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,718 | May 10, 2005 | — | — |
| Valliant L. R. #1142-435-37425 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,571 | May 10, 2005 | — | — |
| Hill-Valliant L.R. a #442-435-37426 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,698 | May 10, 2005 | — | — |
| Cash Joy #1A42-435-37427 | Concho Oilfield Serv & Oper Co. only | Sutton, TXShajumar (Canyon) | PluggedGas | 3,000 | May 10, 2005 | — | — |
| Cusenbary 60 #1242-435-37419 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 5,722 | May 9, 2005 | — | — |
| Morriss 82 #942-435-37418 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 6,511 | May 6, 2005 | — | — |
| Ward Rip C #342-435-37417 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 7,933 | May 5, 2005 | — | — |
| Mayer Minnie H. a #10342-435-37412 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,125 | May 4, 2005 | — | — |
| Mayer Minnie H. JJ #330242-435-37413 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,164 | May 4, 2005 | — | — |
| Shurley RR 1A #442-435-37414 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 7,500 | May 4, 2005 | — | — |
| Davis D #11X42-435-37415 | Upp Operating LLC only | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,150 | May 4, 2005 | — | — |
| Davis F #14X42-435-37416 | Upp Operating LLC only | Sutton, TXSonora (Canyon Upper) | ActiveGas | 5,765 | May 4, 2005 | — | — |
| Shurley 111 #2042-435-37408 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 6,711 | May 3, 2005 | — | — |
| Shurley RR 4A #242-435-37409 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 7,316 | May 3, 2005 | — | — |
| Shurley 110 #2042-435-37410 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 6,850 | May 3, 2005 | — | — |
| Shurley 110 #2142-435-37411 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 6,850 | May 3, 2005 | — | — |
| Hill-Mayer Edwin S. Jr. Z #542-435-37403 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 7,841 | May 2, 2005 | — | — |
| Shurley RR 1C #142-435-37406 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 7,950 | May 2, 2005 | — | — |
| Shurley RR 9 #142-435-37404 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,030 | Apr 30, 2005 | — | — |
| Florence 38 #342-435-37402 | Byrd Operating Companypermitted by · no operator of record | Sutton, TX | Plugged | 6,000 | Apr 28, 2005 | — | — |
| Shurley RR 4B #142-435-37405 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 7,100 | Apr 27, 2005 | — | — |
| Shurley RR 4B #242-435-37407 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 7,450 | Apr 27, 2005 | — | — |
| Steen #8742-435-37396 | Upp Operating LLC only | Sutton, TXSonora (Canyon Upper) | Temporarily abandonedGas | 5,825 | Apr 22, 2005 | — | — |
| Steen #8542-435-37397 | Upp Operating LLC only | Sutton, TXSonora (Canyon Upper) | ActiveGas | 5,800 | Apr 22, 2005 | — | — |
| Mittel Ben #742-435-37398 | Upp Operating LLC only | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,514 | Apr 22, 2005 | — | — |
| Thomson #1342-435-37399 | Highmount Expl & Prod Texas LLC only | Sutton, TXSonora (Canyon Upper) | PluggedGas | 6,400 | Apr 22, 2005 | — | — |
| Martin #3242-435-37400 | Dominion Oklahoma Texas E&P, Incpermitted by · no operator of record | Sutton, TX | Plugged | 6,300 | Apr 22, 2005 | — | — |
| Hull #942-435-37401 | Upp Operating LLC only | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,300 | Apr 22, 2005 | — | — |
| Wilson Duke 174 #1042-435-37393 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,950 | Apr 19, 2005 | — | — |