| Canyon Ranch #1075A42-435-35060 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 16,700 | Feb 3, 2000 | — | — |
| Canyon Ranch #1313S42-435-35061 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 5,550 | Feb 3, 2000 | — | — |
| Canyon Ranch #8314S42-435-35062 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 5,565 | Feb 3, 2000 | — | — |
| Mayer #2242-435-35052 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,700 | Jan 27, 2000 | — | — |
| Brown/Whitehead 41 #142-435-35054 | Upp Operating LLC | Sutton, TXWhitehead (Strawn) | ActiveGas | 9,150 | Jan 27, 2000 | — | — |
| Canyon Ranch #8313S42-435-35055 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 5,550 | Jan 27, 2000 | — | — |
| Fields 49 #342-435-35051 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 6,050 | Jan 25, 2000 | — | — |
| Canyon Ranch #8304X42-435-35050 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 5,400 | Jan 21, 2000 | — | — |
| Canyon Ranch #1312S42-435-35047 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 5,524 | Jan 18, 2000 | — | — |
| Fields 58 #542-435-35048 | Smith Pipe of Abilene | Sutton, TXFawcett (Wolfcamp) | PluggedGas | 5,600 | Jan 18, 2000 | — | — |
| Fields 58 #642-435-35049 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 5,750 | Jan 18, 2000 | — | — |
| McMillan Leo H. 108 #1642-435-35046 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 5,610 | Jan 6, 2000 | — | — |
| Mayfield 45 #942-435-35043 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,400 | Jan 3, 2000 | — | — |
| Mayfield 46 #1542-435-35045 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,400 | Jan 3, 2000 | — | — |
| Shurley 98 #1142-435-35036 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,500 | Dec 29, 1999 | — | — |
| Vanderstucken 82 #142-435-35037 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 5,500 | Dec 29, 1999 | — | — |
| Fields 21 #842-435-35038 | Upp Operating LLC | Sutton, TXFawcett (Wolfcamp) | ActiveGas | 6,100 | Dec 29, 1999 | — | — |
| Shurley 94 #542-435-35039 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,400 | Dec 29, 1999 | — | — |
| Richardson 138 #1542-435-35040 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,350 | Dec 29, 1999 | — | — |
| Richardson 138 #1342-435-35034 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,300 | Dec 21, 1999 | — | — |
| Pfluger 103 #642-435-35031 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 5,550 | Dec 13, 1999 | — | — |
| Fields 58 #442-435-35032 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 5,800 | Dec 13, 1999 | — | — |
| Pfluger 84 #1442-435-35033 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 5,550 | Dec 13, 1999 | — | — |
| Mayer #2042-435-35029 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,800 | Dec 2, 1999 | — | — |
| Mayer #1942-435-35030 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,701 | Dec 2, 1999 | — | — |
| Mayer 19 #542-435-35028 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,524 | Nov 24, 1999 | — | — |
| Mayer #1642-435-35026 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,400 | Nov 10, 1999 | — | — |
| Galbreath 80 #342-435-35027 | Dreyfus, Louis Natural Gas Corp | Sutton, TX | Not on schedule | 6,200 | Nov 10, 1999 | — | — |
| Mayer #1742-435-35020 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,487 | Nov 9, 1999 | — | — |
| Mayer #1342-435-35021 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,550 | Nov 9, 1999 | — | — |
| Mayer #1442-435-35022 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,544 | Nov 9, 1999 | — | — |
| Mayer #1242-435-35023 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,550 | Nov 9, 1999 | — | — |
| Mayer #1842-435-35024 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,750 | Nov 9, 1999 | — | — |
| Mayer #1542-435-35025 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,350 | Nov 9, 1999 | — | — |
| Granger Bluff #420142-435-35019 | Blackstone Energy Services LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 9,050 | Nov 8, 1999 | — | — |
| Miers a #151542-435-35016 | Robert C. Brower LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 5,700 | Oct 27, 1999 | — | — |
| Genini #330542-435-35017 | Robert C. Brower LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,707 | Oct 27, 1999 | — | — |
| A Miers #842-435-35018 | — | Sutton, TXSonora (Canyon Upper) | Plugged | 5,600 | Oct 27, 1999 | — | — |
| Whitehead 2 #20342-435-35010 | Upp Operating LLC | Sutton, TXWhitehead (Strawn) | ActiveGas | 8,800 | Oct 25, 1999 | — | — |
| Jones Ranch #187342-435-35012 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 8,125 | Oct 19, 1999 | — | — |
| Askew & Glimp 55 #842-435-35014 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 6,100 | Oct 19, 1999 | — | — |
| Mayer Edwin S. Jr. #2242-435-35015 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,100 | Oct 19, 1999 | — | — |
| Whitehead #60242-435-34995 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,900 | Oct 18, 1999 | — | — |
| Galbreath 79 #442-435-35013 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,200 | Oct 18, 1999 | — | — |
| Espy 57 #1142-435-34997 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,050 | Oct 12, 1999 | — | — |
| Espy 56 #1342-435-34998 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,050 | Oct 12, 1999 | — | — |
| Espy 56 #1242-435-34999 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,000 | Oct 12, 1999 | — | — |
| Espy 57 #1042-435-35000 | Dreyfus, Louis Natural Gas Corp | Sutton, TX | Not on schedule | 6,050 | Oct 12, 1999 | — | — |
| Espy 41 #1042-435-35001 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 6,000 | Oct 12, 1999 | — | — |
| Espy 41 #942-435-35002 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,000 | Oct 12, 1999 | — | — |