| Mayer Minnie H. D-38 #242-435-34495 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 8,100 | Mar 27, 1995 | — | — |
| Mayer Ranch K #100242-435-34453 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 8,200 | Feb 2, 1995 | — | — |
| Fields 17 #242-435-30949 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 6,202 | Apr 13, 1994 | — | — |
| Steen #3242-435-34151 | Highmount Expl & Prod Texas LLC | Sutton, TXSonora (Canyon Upper) | PluggedGas | 5,700 | Jan 13, 1994 | — | — |
| Fields #242-435-32111 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Wolfcamp) | PluggedGas | 6,000 | Mar 9, 1992 | — | — |
| Canyon Ranch #1123E42-137-31094 | Highmount Expl & Prod Texas LLC | Edwards, TXSawyer (Canyon) | PluggedGas | 6,232 | Jun 17, 1991 | — | — |
| Canyon Ranch #1047S42-435-33803 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 5,400 | May 28, 1991 | — | — |
| Deberry-Boyette Unit #642-435-33742 | Highmount Expl & Prod Texas LLC | Sutton, TXSonora (Canyon Upper) | PluggedGas | 6,700 | Feb 22, 1991 | — | — |
| Vanderstucken 82 #442-435-33566 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 5,900 | Feb 14, 1990 | — | — |
| Fields 15 #642-435-33473 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 6,090 | May 26, 1989 | — | — |
| Shurley #2242-435-33455 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 6,200 | Jan 20, 1989 | — | — |
| Canyon Ranch #1391S42-435-33370 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 6,100 | Aug 21, 1987 | — | — |
| Johansen B #12342-435-33296 | Highmount Expl & Prod Texas LLC | Sutton, TXWhitehead (Strawn) | PluggedGas | 9,200 | Jun 12, 1986 | — | — |
| Mayfield Ranch E #9142-137-30903 | Highmount Expl & Prod Texas LLC | Edwards, TXM. M. W. (Canyon) | PluggedGas | 4,300 | Mar 11, 1985 | — | — |
| Mayfield Ranch C #8842-137-30902 | Highmount Expl & Prod Texas LLC | Edwards, TXM. M. W. (Canyon) | PluggedGas | 5,100 | Mar 4, 1985 | — | — |
| Mayer Ranch ZZ #6542-435-33228 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 7,250 | Jan 23, 1985 | — | — |
| Mayer Ranch CC #2742-435-33193 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 7,800 | Aug 27, 1984 | — | — |
| Mayer Ranch y #2342-435-33111 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 7,800 | Jun 14, 1984 | — | — |
| Mayer Ranch Z #2442-435-33140 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 7,600 | May 25, 1984 | — | — |
| Mayer Ranch VV #6042-435-33133 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 7,600 | May 17, 1984 | — | — |
| Mayer Ranch C #342-435-33102 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 7,500 | May 2, 1984 | — | — |
| Mayer Ranch G #742-435-33099 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 7,500 | Mar 29, 1984 | — | — |
| Pfluger 105 #742-435-33065 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 6,000 | Jan 5, 1984 | — | — |
| Fawcett 130 #642-435-33049 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 7,800 | Nov 22, 1983 | — | — |
| Martin #342-435-33020 | Highmount Expl & Prod Texas LLC | Sutton, TXSonora (Canyon Upper) | PluggedGas | 6,400 | Sep 6, 1983 | — | — |
| Shurley 96 #642-435-32993 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 7,000 | Jul 15, 1983 | — | — |
| Allison-Miers #710342-435-32980 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 6,000 | May 10, 1983 | — | — |
| Sawyer 168 #642-435-32973 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 7,900 | May 5, 1983 | — | — |
| Ward 114 #742-435-32962 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 7,650 | Apr 19, 1983 | — | — |
| Friend Joe Estate #2034A42-105-34407 | Highmount Expl & Prod Texas LLC | Crockett, TXSawyer (Canyon) | PluggedGas | 9,500 | Mar 9, 1983 | — | — |
| Galbreath 66 #642-435-32940 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 6,600 | Feb 25, 1983 | — | — |
| Pfluger 105 #642-435-32883 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 6,000 | Nov 30, 1982 | — | — |
| Hill-Mayer Edwin S. Jr. O #142-435-32868 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 7,500 | Nov 15, 1982 | — | — |
| Shurley 147 #542-435-32843 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 7,500 | Oct 5, 1982 | — | — |
| Hill-Mayer Edwin S. Jr. B #142-435-32748 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 7,500 | Sep 7, 1982 | — | — |
| Galbreath 67 #542-435-32819 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 6,700 | Aug 16, 1982 | — | — |
| McMillan Leo H. 108 #642-435-32797 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 6,500 | Jul 16, 1982 | — | — |
| Hill-Mayer Edwin S. Jr. I #142-435-32784 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 7,500 | Jul 13, 1982 | — | — |
| Hill-Mayer Edwin S. Jr. F #142-435-32749 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 7,500 | May 20, 1982 | — | — |
| Simmons Ranch #842-435-32734 | Highmount Expl & Prod Texas LLC | Sutton, TXSonora (Canyon Upper) | PluggedGas | 7,250 | May 4, 1982 | — | — |
| Shurley 123 #642-435-32707 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 7,200 | Apr 19, 1982 | — | — |
| Shurley 96 #542-435-32679 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 7,000 | Mar 4, 1982 | — | — |
| Friend Joe Estate a #402542-105-33921 | Highmount Expl & Prod Texas LLC | Crockett, TXSawyer (Canyon) | PluggedGas | 10,000 | Feb 23, 1982 | — | — |
| Wilson Duke #176342-435-32657 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 8,500 | Jan 22, 1982 | — | — |
| Reed 100 #542-435-32639 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 6,850 | Dec 28, 1981 | — | — |
| Wilson Duke #136242-435-32617 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 7,500 | Dec 4, 1981 | — | — |
| Davis C #642-435-32589 | Highmount Expl & Prod Texas LLC | Sutton, TXSonora (Canyon Upper) | PluggedGas | 6,300 | Oct 19, 1981 | — | — |
| Espy 56 #542-435-32582 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 7,100 | Oct 8, 1981 | — | — |
| Espy 41 #542-435-32575 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 6,900 | Oct 1, 1981 | — | — |
| Sawyer 128 #542-435-32572 | Highmount Expl & Prod Texas LLC | Sutton, TXSawyer (Canyon) | PluggedGas | 8,000 | Sep 24, 1981 | — | — |