| Nicks Gerald 5 #1142-435-38921 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,820 | Mar 21, 2008 | — | — |
| Espy H. T. #1042-435-38922 | Robert C. Brower LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 5,705 | Mar 21, 2008 | — | — |
| Genini 31 #2142-435-38878 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,300 | Mar 20, 2008 | — | — |
| Genini 31 #2542-435-38879 | Highmount Expl & Prod Texas LLCpermitted by · no operator of record | Sutton, TX | Not on schedule | 8,550 | Mar 20, 2008 | — | — |
| Genini 31 #2242-435-38880 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,343 | Mar 20, 2008 | — | — |
| Genini 31 #2442-435-38881 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,400 | Mar 20, 2008 | — | — |
| Shurley RR 4B #542-435-38882 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 7,551 | Mar 20, 2008 | — | — |
| Shurley RR 4B #442-435-38883 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,370 | Mar 20, 2008 | — | — |
| Espy H. T. #942-435-38920 | Robert C. Brower LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 5,650 | Mar 20, 2008 | — | — |
| Davis D #1842-435-38869 | Upp Operating LLC only | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,068 | Mar 19, 2008 | — | — |
| Shurley RR 1F #942-435-38870 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,675 | Mar 17, 2008 | — | — |
| Genini 39 #1642-435-38871 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,659 | Mar 17, 2008 | — | — |
| Shurley RR IF #742-435-38872 | Highmount Expl & Prod Texas LLCpermitted by · no operator of record | Sutton, TX | Not on schedule | 8,300 | Mar 17, 2008 | — | — |
| Genini 39 #2142-435-38873 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,725 | Mar 17, 2008 | — | — |
| Genini 39 #2242-435-38874 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,800 | Mar 17, 2008 | — | — |
| Genini 39 #2542-435-38875 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,750 | Mar 17, 2008 | — | — |
| Hudspeth 2 #242-435-38919 | Highmount Expl & Prod Texas LLCpermitted by · no operator of record | Sutton, TX | Not on schedule | 8,950 | Mar 17, 2008 | — | — |
| Meckel #9542-435-38912 | Upp Operating LLC only | Sutton, TXSonora (Canyon Upper) | ActiveGas | 5,949 | Mar 14, 2008 | — | — |
| Meckel #9642-435-38913 | Upp Operating LLC only | Sutton, TXSonora (Canyon Upper) | ActiveGas | 5,973 | Mar 14, 2008 | — | — |
| Mayer Edwin S. Jr. B 38 #542-435-38916 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,470 | Mar 14, 2008 | — | — |
| Mayer Edwin S. Jr. B 38 #442-435-38917 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,530 | Mar 14, 2008 | — | — |
| Meckel #9442-435-38911 | Upp Operating LLC only | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,073 | Mar 13, 2008 | — | — |
| Steen #10042-435-38915 | Upp Operating LLC only | Sutton, TXSonora (Canyon Upper) | ActiveGas | 5,846 | Mar 13, 2008 | — | — |
| Mayer Edwin S. Jr. C #30642-435-38906 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 7,967 | Mar 11, 2008 | — | — |
| Hill-Mayer Edwin S. Jr. F #642-435-38907 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,100 | Mar 11, 2008 | — | — |
| Hill-Mayer Edwin S. Jr. Z #8__42-435-38908 | Highmount Expl & Prod Texas LLCpermitted by · no operator of record | Sutton, TX | Plugged | 8,250 | Mar 11, 2008 | — | — |
| Deberry-Berger Unit #2142-435-38909 | Upp Operating LLC only | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,652 | Mar 11, 2008 | — | — |
| Espy H. T. -a- #442-435-38918 | Robert C. Brower LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 5,776 | Mar 11, 2008 | — | — |
| Mayer Ranch 41 #242-435-38910 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,800 | Mar 10, 2008 | — | — |
| Hill-Mayer Edwin S. Jr. Z #742-435-38903 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 7,925 | Mar 7, 2008 | — | — |
| Barton #1942-435-38904 | Upp Operating LLC only | Sutton, TXSonora (Canyon Upper) | ActiveGas | 6,759 | Mar 7, 2008 | — | — |
| Mayfield 33 #25HHZ42-435-38901 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | Temporarily abandonedGas | 7,115 | Mar 5, 2008 | — | — |
| Jones 118 #3042-435-38891 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 6,488 | Mar 4, 2008 | — | — |
| Jones 118 #3142-435-38892 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 6,401 | Mar 4, 2008 | — | — |
| Canyon Ranch 114 #18S42-435-38804 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 6,804 | Feb 28, 2008 | — | — |
| Shurley RR 1D #342-435-38858 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 8,372 | Feb 28, 2008 | — | — |
| Johnson Jerry #3091_42-435-38890 | Highmount Expl & Prod Texas LLCpermitted by · no operator of record | Sutton, TX | Plugged | 9,875 | Feb 28, 2008 | — | — |
| Mayer Ranch DD #280442-435-38899 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,000 | Feb 28, 2008 | — | — |
| Hill-Mayer Edwin S. Jr. B #642-435-38902 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 8,150 | Feb 28, 2008 | — | — |
| Hill-Mayer Edwin S. Jr. K #742-435-38898 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 7,894 | Feb 27, 2008 | — | — |
| Hill-Mayer Edwin S. Jr. K #642-435-38897 | Upp Operating LLC only | Sutton, TXSawyer (Strawn North) | ActiveGas | 7,969 | Feb 26, 2008 | — | — |
| Jones 118 #3242-435-38887 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 6,392 | Feb 25, 2008 | — | — |
| Jones 118 #3442-435-38888 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 6,454 | Feb 25, 2008 | — | — |
| Jones 118 #3342-435-38889 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 6,366 | Feb 25, 2008 | — | — |
| Espy 57 #1542-435-38862 | Highmount Expl & Prod Texas LLCpermitted by · no operator of record | Sutton, TX | Not on schedule | 6,325 | Feb 22, 2008 | — | — |
| Espy 56 #1542-435-38884 | Highmount Expl & Prod Texas LLCpermitted by · no operator of record | Sutton, TX | Not on schedule | 6,215 | Feb 22, 2008 | — | — |
| Espy 57 #1342-435-38885 | Highmount Expl & Prod Texas LLCpermitted by · no operator of record | Sutton, TX | Not on schedule | 6,250 | Feb 20, 2008 | — | — |
| Espy 56 #1442-435-38886 | Highmount Expl & Prod Texas LLCpermitted by · no operator of record | Sutton, TX | Not on schedule | 6,250 | Feb 20, 2008 | — | — |
| Jones 118 #2842-435-38876 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 6,554 | Feb 15, 2008 | — | — |
| Jones 118 #2942-435-38877 | Upp Operating LLC only | Sutton, TXSawyer (Canyon) | ActiveGas | 6,452 | Feb 15, 2008 | — | — |