| Mayfield 46 #1342-435-35151 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,400 | Jun 9, 2000 | — | — |
| Fields 21 #442-435-33589 | Smith Pipe of Abilene | Sutton, TXSawyer (Canyon) | PluggedGas | 6,500 | Jun 5, 2000 | — | — |
| Fawcett Randee Trust -B- #342-435-30506 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 7,600 | May 26, 2000 | — | — |
| Hill-Mayer Edwin S. Jr. L #342-435-35145 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,050 | May 25, 2000 | — | — |
| David 109 #1642-435-35146 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 5,650 | May 25, 2000 | — | — |
| David 109 #1542-435-35147 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 5,666 | May 25, 2000 | — | — |
| David 109 #1442-435-35148 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 5,650 | May 25, 2000 | — | — |
| David 109 #1342-435-35149 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 5,680 | May 25, 2000 | — | — |
| Hill-Mayer Edwin S. Jr. M #442-435-35150 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,300 | May 25, 2000 | — | — |
| Mayer Ranch GG #310242-435-35139 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,200 | May 24, 2000 | — | — |
| Mayer Ranch JJJ #140342-435-35140 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,250 | May 24, 2000 | — | — |
| Galbreath 78 #842-435-35141 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,200 | May 24, 2000 | — | — |
| Galbreath 79 #542-435-35142 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,200 | May 24, 2000 | — | — |
| Galbreath 79 #742-435-35143 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,185 | May 24, 2000 | — | — |
| Galbreath 91 #742-435-35144 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 6,300 | May 24, 2000 | — | — |
| Hill-Mayer Edwin S. Jr FF #242-435-35138 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,300 | May 23, 2000 | — | — |
| Morriss Bros. Ranch G #990242-435-34091 | Upp Operating LLC | Sutton, TXWhitehead (Strawn) | ActiveGas | 9,400 | May 22, 2000 | — | — |
| Mayer 47 #842-435-35136 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,450 | May 22, 2000 | — | — |
| Hill-Mayer Edwin S Jr CC #242-435-35137 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,247 | May 22, 2000 | — | — |
| Mayer 38 #542-435-35135 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,150 | May 17, 2000 | — | — |
| Mayer 36 #1242-435-35133 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,228 | May 12, 2000 | — | — |
| Deberry a #5542-435-35134 | Upp Operating LLC | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,635 | May 11, 2000 | — | — |
| Mayer 36 #142-435-30503 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 7,800 | May 10, 2000 | — | — |
| Fields 51 #442-435-32042 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 6,000 | May 9, 2000 | — | — |
| Hill-Mayer Edwin S. Jr. Z #342-435-34556 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,059 | May 9, 2000 | — | — |
| Mayer Ranch JJJ #140242-435-34680 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,250 | May 9, 2000 | — | — |
| Mayer 18 #642-435-35131 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,400 | May 2, 2000 | — | — |
| Brown/Whitehead 41 #242-435-35128 | Upp Operating LLC | Sutton, TXWhitehead (Strawn) | ActiveGas | 9,000 | Apr 27, 2000 | — | — |
| Mayer 15 #1142-435-35129 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,200 | Apr 27, 2000 | — | — |
| Mayer 17 #442-435-35130 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,250 | Apr 27, 2000 | — | — |
| Mayer 15 #1642-435-35126 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,250 | Apr 19, 2000 | — | — |
| Mayer 15 #1442-435-35127 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 8,200 | Apr 19, 2000 | — | — |
| Mayer Ranch W 21 #442-435-34586 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,150 | Apr 17, 2000 | — | — |
| McDermott #642-435-35110 | Grace Petroleum Operating LLC | Sutton, TXBranch North (Ellen.) | ActiveGas | 6,250 | Apr 17, 2000 | — | — |
| Pfluger 103 #942-435-35125 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 5,550 | Apr 14, 2000 | — | — |
| Pfluger 104 #1642-435-35117 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 5,600 | Apr 11, 2000 | — | — |
| Fields 50 #442-435-35118 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 5,800 | Apr 11, 2000 | — | — |
| Fields 57 #242-435-35119 | Highmount Expl & Prod Texas LLC | Sutton, TXFawcett (Wolfcamp) | PluggedGas | 5,800 | Apr 11, 2000 | — | — |
| Fields 50 #342-435-35120 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 5,800 | Apr 11, 2000 | — | — |
| Fields 57 #342-435-35121 | Smith Pipe of Abilene | Sutton, TXSawyer (Canyon) | PluggedGas | 5,800 | Apr 11, 2000 | — | — |
| Fields 49 #442-435-35122 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 5,800 | Apr 11, 2000 | — | — |
| Fields 49 #542-435-35123 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 5,769 | Apr 11, 2000 | — | — |
| Fields 58 #742-435-35124 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 5,800 | Apr 11, 2000 | — | — |
| Hill-Mayer Edwin S. Jr. AA #342-435-35115 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,250 | Apr 7, 2000 | — | — |
| Mayer 37 #842-435-35116 | Upp Operating LLC | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,238 | Apr 7, 2000 | — | — |
| Genini #330642-435-35113 | Robert C. Brower LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 5,850 | Mar 29, 2000 | — | — |
| Mayer Minnie H. V V V #165242-435-35112 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 5,800 | Mar 28, 2000 | — | — |
| Pfluger 85 #1342-435-35106 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 5,450 | Mar 24, 2000 | — | — |
| Pfluger 85 #1842-435-35107 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 5,500 | Mar 24, 2000 | — | — |
| Pfluger 85 #1742-435-35108 | Upp Operating LLC | Sutton, TXSawyer (Canyon) | ActiveGas | 5,405 | Mar 24, 2000 | — | — |