| Steen #7642-435-36832 | Upp Operating LLC only | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,202 | Apr 23, 2004 | — | — |
| Canyon Ranch 106 #12S42-435-36833 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 5,543 | Apr 23, 2004 | — | — |
| Canyon Ranch #9203S42-435-36834 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 5,431 | Apr 23, 2004 | — | — |
| Canyon Ranch #9312S42-435-36835 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 5,440 | Apr 23, 2004 | — | — |
| Canyon Ranch #8211S42-435-36836 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 5,429 | Apr 23, 2004 | — | — |
| Canyon Ranch #1213S42-435-36837 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 5,382 | Apr 23, 2004 | — | — |
| Brown / Whitehead 2 #1742-435-36823 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 9,250 | Apr 22, 2004 | — | — |
| Brown/Whitehead 2 #3142-435-36824 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 9,275 | Apr 22, 2004 | — | — |
| Brown/Whitehead 2 #142-435-36825 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,850 | Apr 22, 2004 | — | — |
| Brown/Whitehead 2 #3042-435-36826 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,900 | Apr 22, 2004 | — | — |
| Brown/Whitehead 2 #1342-435-36827 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,733 | Apr 22, 2004 | — | — |
| Hull #742-435-36828 | Upp Operating LLC only | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,327 | Apr 22, 2004 | — | — |
| Galbreath 66 #1442-435-36815 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 6,228 | Apr 21, 2004 | — | — |
| Galbreath 66 #1542-435-36816 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 6,200 | Apr 21, 2004 | — | — |
| Brown/Whitehead 2 #3842-435-36817 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 9,034 | Apr 21, 2004 | — | — |
| Brown/Whitehead 2 #3942-435-36818 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,700 | Apr 21, 2004 | — | — |
| Brown/Whitehead 2 #4142-435-36819 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,760 | Apr 21, 2004 | — | — |
| Brown/Whitehead 2 #4342-435-36820 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,800 | Apr 21, 2004 | — | — |
| Vanderstucken J. M. #1142-435-36821 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,700 | Apr 21, 2004 | — | — |
| Hill-Vanderstucken a #442-435-36822 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,700 | Apr 21, 2004 | — | — |
| Brown/Whitehead 2 #3442-435-36814 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 9,200 | Apr 20, 2004 | — | — |
| Valliant #742-435-36805 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,723 | Apr 19, 2004 | — | — |
| Vanderstucken 34 #742-435-36806 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 4,500 | Apr 19, 2004 | — | — |
| Hill-Randee Fawcett Trust K #342-435-36807 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,601 | Apr 19, 2004 | — | — |
| Canyon Ranch #404S42-435-36808 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 4,330 | Apr 19, 2004 | — | — |
| Sawyer 16 #342-435-36809 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,700 | Apr 19, 2004 | — | — |
| Galbreath 66 #1742-435-36810 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 6,100 | Apr 19, 2004 | — | — |
| Simmons Ranch #7642-435-36811 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,194 | Apr 19, 2004 | — | — |
| Simmons Ranch #6842-435-36812 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,300 | Apr 19, 2004 | — | — |
| Simmons Ranch #7242-435-36813 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,250 | Apr 19, 2004 | — | — |
| Hill-Mayer Edwin S. Jr X #242-435-36799 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,075 | Apr 16, 2004 | — | — |
| Hill-Mayer Minnie H. B #442-435-36801 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 7,850 | Apr 16, 2004 | — | — |
| Davis N. B. #1642-435-36802 | Henry Petroleum LLC only | Sutton, TXMiers (Stray) | ActiveGas | 4,500 | Apr 16, 2004 | — | — |
| Simmons Ranch #6342-435-36803 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 8,300 | Apr 16, 2004 | — | — |
| Vanderstucken 34 #842-435-36787 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 4,400 | Apr 14, 2004 | — | — |
| Vanderstucken 35 #642-435-36788 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 4,400 | Apr 14, 2004 | — | — |
| Vanderstucken 65 #642-435-36789 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 4,304 | Apr 14, 2004 | — | — |
| Hill-Mayer Edwin S. Jr. K #442-435-36790 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,100 | Apr 14, 2004 | — | — |
| Shurley 139 #342-435-36791 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 5,800 | Apr 14, 2004 | — | — |
| Meckel a #6942-435-36792 | Upp Operating LLC only | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,521 | Apr 14, 2004 | — | — |
| Galbreath 66 #1642-435-36793 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 6,050 | Apr 14, 2004 | — | — |
| Galbreath 65 #1442-435-36794 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 6,125 | Apr 14, 2004 | — | — |
| Galbreath 80 #342-435-36795 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 6,200 | Apr 14, 2004 | — | — |
| Meckel #7942-435-36796 | Upp Operating LLC only | Sutton, TXSonora (Canyon Upper) | Temporarily abandonedGas | 6,117 | Apr 14, 2004 | — | — |
| Galbreath 79 #1042-435-36797 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 6,111 | Apr 14, 2004 | — | — |
| Galbreath 79 #942-435-36798 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 6,150 | Apr 14, 2004 | — | — |
| Hill-Mayer Minnie H. B #242-435-36800 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 7,700 | Apr 14, 2004 | — | — |
| Shurley 141 #1842-435-36710 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 6,750 | Apr 13, 2004 | — | — |
| Kiser #1142-435-36704 | R2Q Operating LLC only | Sutton, TXDenison (Strawn) | ActiveGas | 9,095 | Apr 9, 2004 | — | — |
| Kiser #1042-435-36705 | R2Q Operating LLC only | Sutton, TXDenison (Strawn) | ActiveGas | 9,170 | Apr 9, 2004 | — | — |