| Simmons 72 1/2 #342-435-35510 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,880 | May 11, 2001 | — | — |
| Canyon Ranch #1159S42-435-35499 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 5,330 | May 10, 2001 | — | — |
| Canyon Ranch #1158S42-435-35500 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 5,373 | May 10, 2001 | — | — |
| Fields 16 #1042-435-35496 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,200 | May 9, 2001 | — | — |
| Kirby 184 #642-435-35497 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,100 | May 9, 2001 | — | — |
| Deberry "a" #6142-435-35495 | Burlington Resources O & G Co LP | Sutton, TXSonora (Canyon Upper) | Not on schedule | 6,760 | May 8, 2001 | — | — |
| Deberry-Meckel Unit #1142-435-35492 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,421 | May 7, 2001 | — | — |
| Deberry-Meckel Unit #1142-435-35493 | Burlington Resources O & G Co LP | Sutton, TXSonora (Canyon Upper) | Not on schedule | 6,380 | May 7, 2001 | — | — |
| Meckel #5442-435-35487 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,071 | May 4, 2001 | — | — |
| Meckel #5842-435-35488 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 5,935 | May 4, 2001 | — | — |
| Meckel #5742-435-35489 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,060 | May 4, 2001 | — | — |
| Meckel #5642-435-35490 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 5,782 | May 4, 2001 | — | — |
| Meckel #55__42-435-35491 | — | Sutton, TXSonora (Canyon Upper) | Plugged | 6,345 | May 4, 2001 | — | — |
| Allison 54 #442-435-35486 | Enervest Operating L.L.C. | Sutton, TXSawyer (Canyon) | PluggedGas | 6,200 | May 3, 2001 | — | — |
| Deberry a #6242-435-35479 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,553 | May 2, 2001 | — | — |
| Deberry a #6342-435-35480 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,515 | May 2, 2001 | — | — |
| Deberry "a" #6442-435-35481 | Burlington Resources O & G Co LP | Sutton, TXSonora (Canyon Upper) | Not on schedule | 6,550 | May 2, 2001 | — | — |
| Steen #5642-435-35473 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 5,604 | May 1, 2001 | — | — |
| Steen #5742-435-35474 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 5,825 | May 1, 2001 | — | — |
| Steen #5842-435-35475 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 5,905 | May 1, 2001 | — | — |
| Steen #5942-435-35476 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 5,746 | May 1, 2001 | — | — |
| Steen #5542-435-35477 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 5,706 | May 1, 2001 | — | — |
| Kirby 1 #342-435-35471 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,900 | Apr 27, 2001 | — | — |
| Kirby 183 #442-435-35472 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,725 | Apr 27, 2001 | — | — |
| Vanderstucken 72 #642-435-32990 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,101 | Apr 26, 2001 | — | — |
| Shurley 96 #942-435-35467 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,300 | Apr 26, 2001 | — | — |
| Shurley 98 #842-435-35468 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,450 | Apr 26, 2001 | — | — |
| Kirby 184 #542-435-35469 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 7,850 | Apr 26, 2001 | — | — |
| Shurley 95 #842-435-35470 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 6,450 | Apr 26, 2001 | — | — |
| Meckel a #1942-435-35464 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,628 | Apr 23, 2001 | — | — |
| Meckel a #2042-435-35465 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | Temporarily abandonedGas | 6,532 | Apr 23, 2001 | — | — |
| Meckel a #1842-435-35466 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 7,300 | Apr 23, 2001 | — | — |
| Simmons 72 1/2 #242-435-35463 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,100 | Apr 20, 2001 | — | — |
| Allison 54 #542-435-35462 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,125 | Apr 19, 2001 | — | — |
| Hudspeth 54 #442-435-35357 | Dominion Oklahoma Texas E&P Inc | Sutton, TXSawyer (Strawn North) | PluggedGas | 8,475 | Apr 16, 2001 | — | — |
| Vanderstucken 72 #1342-435-35461 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,200 | Apr 16, 2001 | — | — |
| Fields 23 #842-435-35451 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 5,700 | Apr 6, 2001 | — | — |
| Fields 59 #442-435-35452 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 6,121 | Apr 6, 2001 | — | — |
| Shurley 94 #1342-435-35453 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,300 | Apr 6, 2001 | — | — |
| Simmons Ranch #1542-435-35454 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,300 | Apr 6, 2001 | — | — |
| Simmons Ranch #1642-435-35455 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,350 | Apr 6, 2001 | — | — |
| Simmons Ranch #1742-435-35456 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,450 | Apr 6, 2001 | — | — |
| Simmons Ranch #1942-435-35457 | — | Sutton, TX | Plugged | 8,450 | Apr 6, 2001 | — | — |
| Simmons Ranch #2042-435-35458 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,350 | Apr 6, 2001 | — | — |
| Vanderstucken 48 #842-435-35459 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 5,650 | Apr 6, 2001 | — | — |
| Vanderstucken 50 #1142-435-35460 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,100 | Apr 6, 2001 | — | — |
| Canyon Ranch #1046S42-435-35443 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 5,320 | Apr 3, 2001 | — | — |
| Canyon Ranch #1156S42-435-35444 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 5,345 | Apr 3, 2001 | — | — |
| Canyon Ranch #1157S42-435-35445 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 5,311 | Apr 3, 2001 | — | — |
| Canyon Ranch #1262S42-435-35446 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 5,309 | Apr 3, 2001 | — | — |