| 2008-10-17 | 672436 | 42-435-39130 | CANYON RANCH 114 #20S | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 7,475 | |
| 2008-10-16 | 672909 | 42-435-39123 | LANCASTER 185 #5 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 8,475 | |
| 2008-10-14 | 672628 | 42-435-39119 | EPPS, H.C. #39 #14 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 7,500 | |
| 2008-10-14 | 672439 | 42-435-39122 | CANYON RANCH 114 #21S | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 7,400 | |
| 2008-10-14 | 672378 | 42-435-39111 | EPPS, H. C. #49 #4 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 7,150 | |
| 2008-10-13 | 672681 | 42-435-39121 | SIMMONS 72.5 #5 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 8,375 | |
| 2008-10-13 | 672559 | 42-435-39118 | SAWYER JONES #1711 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 9,250 | |
| 2008-10-13 | 672541 | 42-435-39115 | CANYON RANCH 114 #19S | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 7,500 | |
| 2008-10-11 | 672557 | 42-435-39117 | CANYON RANCH #8317S | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 5,950 | |
| 2008-10-11 | 672556 | 42-435-39116 | CANYON RANCH #8318S | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 5,950 | |
| 2008-10-11 | 672410 | 42-435-39114 | HOLMAN #268 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 7,250 | |
| 2008-10-11 | 672408 | 42-435-39112 | EPPS, HC # 39 #9 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 7,050 | |
| 2008-10-11 | 672408 | 42-435-39112 | EPPS, HC # 39 #9 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 7,050 | |
| 2008-10-11 | 672407 | 42-435-39113 | CAUTHORN 16 #6 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 7,200 | |
| 2008-10-11 | 672379 | 42-435-39110 | EPPS, H.C. #49 #5 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 7,050 | |
| 2008-10-11 | 672324 | 42-435-39108 | EPPS, H.C. #38 #10 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 7,350 | |
| 2008-10-11 | 672307 | 42-435-39107 | CAUTHORN 16 #7 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 7,150 | |
| 2008-10-10 | 672654 | 42-435-39120 | SIMMONS 72.5 #4 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 8,375 | |
| 2008-10-10 | 669878 | 42-435-39083 | CANYON RANCH #1277S | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 7,000 | |
| 2008-10-10 | 669876 | 42-435-39082 | CANYON RANCH #1276S | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 7,000 | |
| 2008-10-09 | 672063 | 42-435-39106 | STEWART #3014 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 5,750 | |
| 2008-10-08 | 672059 | 42-435-39105 | HOLMAN #266 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 7,800 | |
| 2008-10-08 | 672059 | 42-435-39105 | HOLMAN #266 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 7,800 | |
| 2008-10-03 | 671387 | 42-435-39103 | MAYFIELD 40 #24 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 8,750 | |
| 2008-10-03 | 671386 | 42-435-39104 | MAYFIELD 40 #23 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 8,710 | |
| 2008-10-03 | 671368 | 42-435-39102 | MORRISS 82 #8 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 6,400 | |
| 2008-10-03 | 671326 | 42-435-39101 | MAYFIELD 40 #22 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 8,700 | |
| 2008-10-03 | 671295 | 42-435-39100 | MAYFIELD 46 #30 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 8,625 | |
| 2008-10-03 | 671294 | 42-435-39099 | MAYFIELD 46 #29 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 8,650 | |
| 2008-10-03 | 671291 | 42-435-39097 | MAYFIELD 46 #28 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 8,700 | |
| 2008-10-03 | 671290 | 42-435-39096 | MAYFIELD 46 #27 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 8,650 | |
| 2008-10-03 | 671289 | 42-435-39098 | MAYFIELD 46 #26 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 8,700 | |
| 2008-10-02 | 671067 | 42-435-39093 | PFLUGER 85 #21 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 7,950 | |
| 2008-10-01 | 671217 | 42-435-39095 | JONES RANCH 157 #1 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 7,550 | |
| 2008-10-01 | 671217 | 42-435-39095 | JONES RANCH 157 #1 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 7,550 | |
| 2008-09-30 | 671157 | 42-435-39094 | SIMMONS 3 #11 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 8,500 | |
| 2008-09-26 | 671009 | 42-435-39092 | LANCASTER 185 #4 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 8,450 | |
| 2008-09-26 | 671009 | 42-435-39092 | LANCASTER 185 #4 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 8,450 | |
| 2008-09-26 | 670956 | 42-435-39091 | NICKS,GERALD 8 #4 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 8,850 | |
| 2008-09-26 | 670892 | 42-435-39090 | CANYON RANCH #2164S | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 7,250 | |
| 2008-09-25 | 670708 | 42-435-39089 | CANYON RANCH #2073S | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 7,250 | |
| 2008-09-17 | 670135 | 42-435-39087 | STEWART #3015 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 5,750 | |
| 2008-09-17 | 670100 | 42-435-39086 | STEWART #3016 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 5,750 | |
| 2008-09-16 | 670078 | 42-435-39088 | STEWART #3012 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 5,750 | |
| 2008-09-16 | 670074 | 42-435-39085 | STEWART #3013 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 5,750 | |
| 2008-09-16 | 669960 | 42-435-39084 | CUSENBARY 58 #10 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 6,250 | |
| 2008-09-15 | 669681 | 42-435-39081 | CANYON RANCH SWD #115 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 8,450 | |
| 2008-09-12 | 669162 | 42-435-39075 | SIMMONS 72 #18 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 8,550 | |
| 2008-09-12 | 669162 | 42-435-39075 | SIMMONS 72 #18 | HIGHMOUNT EXPL & PROD TEXAS LLC | DRILL | 8,550 | |
| 2008-09-11 | 666251 | 42-435-39054 | MAYER #17A | MARINER ENERGY, INC. | DRILL | 10,000 | |