| 718119Amendment | Jun 14, 2011 | Jun 14, 2011 | Enervest Operating, L.L.C. | Parker | Winston #A 11H | 9,000 | 36735170 |
| 717766 | Jun 8, 2011 | Jun 8, 2011 | Enervest Operating, L.L.C. | Fayette | Schley #1H | 14,000 | 14933227 |
| 717766Amendment | Jun 8, 2011 | Jun 8, 2011 | Enervest Operating, L.L.C. | Fayette | Schley #1H | 14,000 | 14933227 |
| 717648 | Jun 3, 2011 | Jun 3, 2011 | Enervest Operating, L.L.C. | Parker | Dean #B 13H | 9,000 | 36735163 |
| 717641 | Jun 3, 2011 | Jun 3, 2011 | Enervest Operating, L.L.C. | Parker | Dean #B 12H | 9,000 | 36735162 |
| 717639 | Jun 3, 2011 | Jun 3, 2011 | Enervest Operating, L.L.C. | Parker | Dean #B 9H | 9,000 | 36735161 |
| 717187Amendment | May 26, 2011 | May 26, 2011 | Enervest Operating, L.L.C. | Montague | Hofert Unit #1HH | 9,000 | 33734638 |
| 717187Amendment | May 26, 2011 | May 26, 2011 | Enervest Operating, L.L.C. | Montague | Hofert Unit #1HH | 9,000 | 33734638 |
| 716835 | May 24, 2011 | May 24, 2011 | Enervest Operating, L.L.C. | Fayette | T-Rex #1H | 13,000 | 14933226 |
| 716782Amendment | May 20, 2011 | May 20, 2011 | Enervest Operating, L.L.C. | Parker | Madelon #13HH | 9,000 | 36735157 |
| 716779Amendment | May 20, 2011 | May 20, 2011 | Enervest Operating, L.L.C. | Parker | Madelon #12HH | 9,000 | 36735156 |
| 716777Amendment | May 20, 2011 | May 20, 2011 | Enervest Operating, L.L.C. | Parker | Madelon #11HH | 9,000 | 36735155 |
| 716775Amendment | May 20, 2011 | May 20, 2011 | Enervest Operating, L.L.C. | Parker | Madelon #10HH | 9,000 | 36735154 |
| 716221 | May 19, 2011 | May 19, 2011 | Enervest Operating, L.L.C. | Freestone | Watson, M.L. GU #1 #5 | 11,225 | 16131437 |
| 715846 | May 18, 2011 | May 18, 2011 | Enervest Operating, L.L.C. | Parker | Winston #E 10H | 9,000 | 36735146 |
| 715944 | May 17, 2011 | May 17, 2011 | Enervest Operating, L.L.C. | Freestone | Hill-Sneed Gas Unit #1 | 11,500 | 16131400 |
| 715844 | May 10, 2011 | May 10, 2011 | Enervest Operating, L.L.C. | Parker | Winston #E 15H | 9,000 | 36735147 |
| 715840 | May 10, 2011 | May 10, 2011 | Enervest Operating, L.L.C. | Parker | Winston #E 14H | 9,000 | 36735145 |
| 714849 | May 6, 2011 | May 6, 2011 | Enervest Operating, L.L.C. | Parker | Winston #E 13H | 9,000 | 36735142 |
| 715244Amendment | May 3, 2011 | May 3, 2011 | Enervest Operating, L.L.C. | Wise | West Unit #1HH | 9,000 | 49737281 |
| 715070 | Apr 29, 2011 | Apr 29, 2011 | Enervest Operating, L.L.C. | Washington | Jilana JO Unit #2H | 12,000 | 47730984 |
| 715011Amendment | Apr 29, 2011 | Apr 29, 2011 | Enervest Operating, L.L.C. | Wise | Gallagher Unit #1HH | 9,000 | 49737272 |
| 713858 | Apr 20, 2011 | Apr 20, 2011 | Enervest Operating, L.L.C. | Parker | Reed #22H | 9,000 | 36735140 |
| 713858Amendment | Apr 20, 2011 | Apr 20, 2011 | Enervest Operating, L.L.C. | Parker | Reed #22H | 9,000 | 36735140 |
| 714299 | Apr 19, 2011 | Apr 19, 2011 | Enervest Operating, L.L.C. | Fayette | Van Rider #1H | 12,500 | 14933225 |
| 713795 | Apr 12, 2011 | Apr 12, 2011 | Enervest Operating, L.L.C. | Parker | Reed #20H | 9,000 | 36735139 |
| 713795Amendment | Apr 12, 2011 | Apr 12, 2011 | Enervest Operating, L.L.C. | Parker | Reed #20H | 9,000 | 36735139 |
| 713794 | Apr 12, 2011 | Apr 12, 2011 | Enervest Operating, L.L.C. | Parker | Reed #21H | 9,000 | 36735138 |
| 713794Amendment | Apr 12, 2011 | Apr 12, 2011 | Enervest Operating, L.L.C. | Parker | Reed #21H | 9,000 | 36735138 |
| 712860Amendment | Apr 1, 2011 | Apr 1, 2011 | Enervest Operating, L.L.C. | Wheeler | Jolly 21 #3HH | 18,000 | 48333204 |
| 713026 | Mar 31, 2011 | Mar 31, 2011 | Enervest Operating, L.L.C. | Wise | Trwd #F 6H | 9,000 | 49737247 |
| 713025 | Mar 31, 2011 | Mar 31, 2011 | Enervest Operating, L.L.C. | Wise | Trwd #F 5H | 9,000 | 49737246 |
| 712981 | Mar 30, 2011 | Mar 30, 2011 | Enervest Operating, L.L.C. | Wise | Trwd #F 4H | 9,000 | 49737245 |
| 712280Amendment | Mar 22, 2011 | Mar 22, 2011 | Enervest Operating, L.L.C. | Montague | Blain #1HH | 9,000 | 33734581 |
| 711734 | Mar 11, 2011 | Mar 11, 2011 | Enervest Operating, L.L.C. | Fayette | Tree House #1H | 13,000 | 14933223 |
| 711649 | Mar 10, 2011 | Mar 10, 2011 | Enervest Operating, L.L.C. | Washington | Hodges-Druckhammer Unit #1H | 13,500 | 47730983 |
| 711649Amendment | Mar 10, 2011 | Mar 10, 2011 | Enervest Operating, L.L.C. | Washington | Hodges-Druckhammer Unit #1H | 13,500 | 47730983 |
| 711534 | Mar 9, 2011 | Mar 9, 2011 | Enervest Operating, L.L.C. | Parker | Browder-Dearing #A 22H | 9,000 | 36735136 |
| 711499 | Mar 8, 2011 | Mar 8, 2011 | Enervest Operating, L.L.C. | Parker | Browder-Dearing #A 13H | 9,000 | 36735135 |
| 711274 | Mar 4, 2011 | Mar 4, 2011 | Enervest Operating, L.L.C. | Parker | Browder-Dearing #A 23H | 9,000 | 36735134 |
| 710634 | Feb 21, 2011 | Feb 21, 2011 | Enervest Operating, L.L.C. | Parker | Dean #E 8H | 9,000 | 36735132 |
| 710629 | Feb 21, 2011 | Feb 21, 2011 | Enervest Operating, L.L.C. | Parker | Dean #E 19H | 9,000 | 36735131 |
| 710402 | Feb 18, 2011 | Feb 18, 2011 | Enervest Operating, L.L.C. | Parker | Dean #F 5H | 7,000 | 36735130 |
| 710202 | Feb 17, 2011 | Feb 17, 2011 | Enervest Operating, L.L.C. | Parker | Brown #C 21H | 7,000 | 36735129 |
| 710216 | Feb 16, 2011 | Feb 16, 2011 | Enervest Operating, L.L.C. | Parker | Brown #C 46H | 7,000 | 36735128 |
| 710128 | Feb 14, 2011 | Feb 14, 2011 | Enervest Operating, L.L.C. | Parker | Brown #C 45H | 7,000 | 36735127 |
| 709325 | Feb 7, 2011 | Feb 7, 2011 | Enervest Operating, L.L.C. | Harrison | Rosborough, J. F. #1 | 6,800 | 20301989 |
| 709040 | Feb 3, 2011 | Feb 3, 2011 | Enervest Operating, L.L.C. | Brazos | Jones, A.A. #1 | 10,573 | 04130657 |
| 709154Amendment | Jan 28, 2011 | Jan 28, 2011 | Enervest Operating, L.L.C. | Wheeler | Jolly 21 #2HH | 18,000 | 48333164 |
| 707861Amendment | Jan 5, 2011 | Jan 5, 2011 | Enervest Operating, L.L.C. | Andrews | University 5-34 #2 | 14,000 | 00342461 |
| 707363Amendment | Dec 22, 2010 | Dec 22, 2010 | Enervest Operating, L.L.C. | Wise | Gladys Smith a Unit #1HH | 8,900 | 49737193 |
| 707192Amendment | Dec 20, 2010 | Dec 20, 2010 | Enervest Operating, L.L.C. | Sutton | Mayfield 41 #15 | 3,500 | 43537219 |
| 706247 | Dec 6, 2010 | Dec 6, 2010 | Enervest Operating, L.L.C. | Fayette | Walking Taller #1H | 13,100 | 14933220 |
| 705591Amendment | Nov 19, 2010 | Nov 19, 2010 | Enervest Operating, L.L.C. | Andrews | University 8-16 #1 | 12,000 | 00342263 |
| 704984Amendment | Nov 10, 2010 | Nov 10, 2010 | Enervest Operating, L.L.C. | Parker | Winston #D 16H | 7,000 | 36735114 |
| 704978Amendment | Nov 10, 2010 | Nov 10, 2010 | Enervest Operating, L.L.C. | Parker | Winston #D 13H | 7,000 | 36735113 |
| 704833 | Nov 9, 2010 | Nov 9, 2010 | Enervest Operating, L.L.C. | Crockett | Harris, C.T. "12" #1 | 9,300 | 10534507 |
| 704240Amendment | Oct 27, 2010 | Oct 27, 2010 | Enervest Operating, L.L.C. | Parker | Browder #A 9H | 7,000 | 36735107 |
| 704209 | Oct 26, 2010 | Oct 26, 2010 | Enervest Operating, L.L.C. | Brazos | McCullough, A.W #1REH | 12,500 | 04131757 |
| 703012 | Oct 4, 2010 | Oct 4, 2010 | Enervest Operating, L.L.C. | Washington | Kankel OL #1REH | 13,500 | 47730772 |
| 703012Amendment | Oct 4, 2010 | Oct 4, 2010 | Enervest Operating, L.L.C. | Washington | Kankel OL #1REH | 13,500 | 47730772 |
| 702832Amendment | Sep 29, 2010 | Sep 29, 2010 | Enervest Operating, L.L.C. | Wheeler | McMahan W 22 SL #4HH | 12,722 | 48333084 |
| 702119Amendment | Sep 16, 2010 | Sep 16, 2010 | Enervest Operating, L.L.C. | Parker | Browder #A 8H | 7,000 | 36735092 |
| 701988 | Sep 15, 2010 | Sep 15, 2010 | Enervest Operating, L.L.C. | Rusk | Arndt #1 | 13,000 | 40135140 |
| 701559 | Sep 8, 2010 | Sep 8, 2010 | Enervest Operating, L.L.C. | Harrison | Jennifer Stewart Gas Unit #18 | 11,720 | 20335011 |
| 700831 | Aug 26, 2010 | Aug 26, 2010 | Enervest Operating, L.L.C. | Harrison | Hunt Gas Unit #20 | 11,650 | 20335005 |
| 700899 | Aug 25, 2010 | Aug 25, 2010 | Enervest Operating, L.L.C. | Harrison | James A. Ruppe, et Al #3 | 9,750 | 20335007 |
| 700654 | Aug 16, 2010 | Aug 16, 2010 | Enervest Operating, L.L.C. | Fayette | Flying Kyte #1H | 12,000 | 14933218 |
| 700654Amendment | Aug 16, 2010 | Aug 16, 2010 | Enervest Operating, L.L.C. | Fayette | Flying Kyte #1H | 12,000 | 14933218 |
| 699819 | Aug 4, 2010 | Aug 4, 2010 | Enervest Operating, L.L.C. | Runnels | FT Chadbourne Odom Lime Unit #1901R | 6,278 | 39933857 |
| 699114 | Jul 22, 2010 | Jul 22, 2010 | Enervest Operating, L.L.C. | Runnels | Ft. Chadbourne Odom Lime Unit #2718 | 6,330 | 39932449 |
| 699062 | Jul 19, 2010 | Jul 19, 2010 | Enervest Operating, L.L.C. | Grimes | Tmpa Unit #2H | 12,000 | 18530752 |
| 698868 | Jul 15, 2010 | Jul 15, 2010 | Enervest Operating, L.L.C. | Runnels | Fort Chadbourne Odom Lime Unit #A123 | 6,650 | 39935229 |
| 698274 | Jun 30, 2010 | Jun 30, 2010 | Enervest Operating, L.L.C. | Jasper | Arco Fee Unit A-241 #1REH | 11,000 | 24130571 |
| 698274Amendment | Jun 30, 2010 | Jun 30, 2010 | Enervest Operating, L.L.C. | Jasper | Arco Fee Unit A-241 #1REH | 11,000 | 24130571 |
| 698274Amendment | Jun 30, 2010 | Jun 30, 2010 | Enervest Operating, L.L.C. | Jasper | Arco Fee Unit A-241 #1REH | 11,000 | 24130571 |
| 698241 | Jun 30, 2010 | Jun 30, 2010 | Enervest Operating, L.L.C. | Fayette | Vonrosenberg #1REH | 12,500 | 14932702 |
| 698241Amendment | Jun 30, 2010 | Jun 30, 2010 | Enervest Operating, L.L.C. | Fayette | Vonrosenberg #1REH | 12,500 | 14932702 |
| 698037 | Jun 25, 2010 | Jun 25, 2010 | Enervest Operating, L.L.C. | Brazos | Kathleen OL #1REH | 13,500 | 04131860 |
| 697845 | Jun 25, 2010 | Jun 25, 2010 | Enervest Operating, L.L.C. | Runnels | Ft. Chadbourne Odom Lime Unit #1815 | 6,650 | 39935226 |
| 697616 | Jun 22, 2010 | Jun 22, 2010 | Enervest Operating, L.L.C. | Runnels | Ft. Chadbourne Odom Lime Unit #2717 | 6,650 | 39935224 |
| 697562 | Jun 17, 2010 | Jun 17, 2010 | Enervest Operating, L.L.C. | Runnels | Ft. Chadbourne Odom Lime Unit #1121 | 6,650 | 39935222 |
| 697562Amendment | Jun 17, 2010 | Jun 17, 2010 | Enervest Operating, L.L.C. | Runnels | Ft. Chadbourne Odom Lime Unit #1121 | 6,650 | 39935222 |
| 696953 | Jun 15, 2010 | Jun 15, 2010 | Enervest Operating, L.L.C. | Runnels | Ft. Chadbourne Odom Lime Unit #1119 | 6,500 | 39935214 |
| 696969 | Jun 7, 2010 | Jun 7, 2010 | Enervest Operating, L.L.C. | Runnels | Ft. Chadbourne Odom Lime Unit #1120 | 6,500 | 39935215 |
| 695616 | Jun 4, 2010 | Jun 4, 2010 | Enervest Operating, L.L.C. | Washington | Weiss #1REH | 16,500 | 47730874 |
| 696398 | May 26, 2010 | May 26, 2010 | Enervest Operating, L.L.C. | Washington | Sprankle #2REH | 11,500 | 47730717 |
| 696389 | May 24, 2010 | May 24, 2010 | Enervest Operating, L.L.C. | Jasper | Donner-Brown Unit A-346 #1REH | 12,000 | 24130561 |
| 695853 | May 13, 2010 | May 13, 2010 | Enervest Operating, L.L.C. | Washington | Bredwinner Co-OP Unit #1H | 12,000 | 47730982 |
| 695853Amendment | May 13, 2010 | May 13, 2010 | Enervest Operating, L.L.C. | Washington | Bredwinner Co-OP Unit #1H | 12,000 | 47730982 |
| 695635 | May 12, 2010 | May 12, 2010 | Enervest Operating, L.L.C. | Coke | Fort Chadbourne Odom Lime Unit #8062 | 6,600 | 08131968 |
| 695623 | May 12, 2010 | May 12, 2010 | Enervest Operating, L.L.C. | Runnels | FT Chadbourne Odom Lime Unit #A122 | 6,500 | 39935210 |
| 695075 | Apr 27, 2010 | Apr 27, 2010 | Enervest Operating, L.L.C. | Brazos | Newsom Unit #1REH | 11,500 | 04131738 |
| 694278Amendment | Apr 19, 2010 | Apr 19, 2010 | Enervest Operating, L.L.C. | Wise | Baylis Unit #1HH | 9,000 | 49737039 |
| 694278Amendment | Apr 19, 2010 | Apr 19, 2010 | Enervest Operating, L.L.C. | Wise | Baylis Unit #1HH | 9,000 | 49737039 |
| 691291 | Apr 2, 2010 | Apr 2, 2010 | Enervest Operating, L.L.C. | Rusk | Jarrell #A 1 | 13,000 | 40135109 |
| 691971 | Mar 2, 2010 | Mar 2, 2010 | Enervest Operating, L.L.C. | Washington | Johnston Unit #2H | 13,000 | 47730979 |
| 690739 | Feb 10, 2010 | Feb 10, 2010 | Enervest Operating, L.L.C. | Atascosa | B.K. Nixon B #28 | 6,500 | 01334288 |
| 690398 | Feb 1, 2010 | Feb 1, 2010 | Enervest Operating, L.L.C. | Brazos | TJM OL #1REH | 13,500 | 04131861 |
| 690398Amendment | Feb 1, 2010 | Feb 1, 2010 | Enervest Operating, L.L.C. | Brazos | TJM OL #1REH | 13,500 | 04131861 |