| 742180Amendment | Jun 14, 2012 | Jun 14, 2012 | Enervest Operating, L.L.C. | Andrews | Mabee M #2 | 15,000 | 00344482 |
| 742136 | Jun 14, 2012 | Jun 14, 2012 | Enervest Operating, L.L.C. | Parker | Brown #C 9H | 9,000 | 36735295 |
| 742120 | Jun 13, 2012 | Jun 13, 2012 | Enervest Operating, L.L.C. | Parker | Brown #C 44H | 9,000 | 36735296 |
| 742109 | Jun 13, 2012 | Jun 13, 2012 | Enervest Operating, L.L.C. | Parker | Brown #C 20H | 9,000 | 36735297 |
| 741724Amendment | Jun 6, 2012 | Jun 6, 2012 | Enervest Operating, L.L.C. | Martin | Mabee K #6 | 15,000 | 31737899 |
| 741579 | Jun 4, 2012 | Jun 4, 2012 | Enervest Operating, L.L.C. | Washington | Lovings-Kruse Unit #2H | 11,500 | 47730990 |
| 741579Amendment | Jun 4, 2012 | Jun 4, 2012 | Enervest Operating, L.L.C. | Washington | Lovings-Kruse Unit #2H | 11,500 | 47730990 |
| 741256 | Jun 1, 2012 | Jun 1, 2012 | Enervest Operating, L.L.C. | Parker | Winston #D 22H | 9,000 | 36735293 |
| 741256Amendment | Jun 1, 2012 | Jun 1, 2012 | Enervest Operating, L.L.C. | Parker | Winston #D 22H | 9,000 | 36735293 |
| 740672 | May 24, 2012 | May 24, 2012 | Enervest Operating, L.L.C. | Parker | Edwards-Beggs (SA) #6HH | 9,000 | 36735289 |
| 740751 | May 23, 2012 | May 23, 2012 | Enervest Operating, L.L.C. | Wise | Cheek Unit #1HH | 9,000 | 49737486 |
| 740053 | May 21, 2012 | May 21, 2012 | Enervest Operating, L.L.C. | Parker | Edwards-Beggs (SA) #5HH | 9,000 | 36735283 |
| 739146 | May 14, 2012 | May 14, 2012 | Enervest Operating, L.L.C. | Montague | Tucknies Unit #1HH | 9,000 | 33734849 |
| 739146Amendment | May 14, 2012 | May 14, 2012 | Enervest Operating, L.L.C. | Montague | Tucknies Unit #1HH | 9,000 | 33734849 |
| 739069 | May 9, 2012 | May 9, 2012 | Enervest Operating, L.L.C. | Parker | Winston #E 11H | 9,000 | 36735282 |
| 739069Amendment | May 9, 2012 | May 9, 2012 | Enervest Operating, L.L.C. | Parker | Winston #E 8H | 9,000 | 36735282 |
| 739066 | May 9, 2012 | May 9, 2012 | Enervest Operating, L.L.C. | Parker | Winston #E 8H | 9,000 | 36735281 |
| 739066Amendment | May 9, 2012 | May 9, 2012 | Enervest Operating, L.L.C. | Parker | Winston #D 9H | 9,000 | 36735281 |
| 738533 | May 1, 2012 | May 1, 2012 | Enervest Operating, L.L.C. | Parker | Efire #4HH | 9,000 | 36735278 |
| 738474 | May 1, 2012 | May 1, 2012 | Enervest Operating, L.L.C. | Wise | Hirsh Gas Unit #1HH | 9,000 | 49737464 |
| 738265Amendment | May 1, 2012 | May 1, 2012 | Enervest Operating, L.L.C. | Wheeler | Hunter-Hefley 34 #8HH | 12,479 | 48333471 |
| 738262Amendment | May 1, 2012 | May 1, 2012 | Enervest Operating, L.L.C. | Wheeler | Hunter-Hefley 34 #7HH | 12,430 | 48333469 |
| 738011 | Apr 30, 2012 | Apr 30, 2012 | Enervest Operating, L.L.C. | Crockett | Smith Bros #3HH | 7,900 | 10541457 |
| 738105 | Apr 26, 2012 | Apr 26, 2012 | Enervest Operating, L.L.C. | Lee | Randolph #1REH | 10,800 | 28732412 |
| 737783 | Apr 25, 2012 | Apr 25, 2012 | Enervest Operating, L.L.C. | Denton | M.T. Cole S.A. #401HH | 9,000 | 12134271 |
| 737769 | Apr 23, 2012 | Apr 23, 2012 | Enervest Operating, L.L.C. | Denton | M.T. Cole S.A. #402HH | 9,000 | 12134273 |
| 737904 | Apr 21, 2012 | Apr 21, 2012 | Enervest Operating, L.L.C. | Parker | McFarland #F 7H | 9,000 | 36735275 |
| 737753 | Apr 21, 2012 | Apr 21, 2012 | Enervest Operating, L.L.C. | Denton | M.T. Cole S.A. #403HH | 9,000 | 12134274 |
| 737833 | Apr 20, 2012 | Apr 20, 2012 | Enervest Operating, L.L.C. | Parker | McFarland #F 6H | 9,000 | 36735273 |
| 736511 | Apr 3, 2012 | Apr 3, 2012 | Enervest Operating, L.L.C. | Wise | Gibbon Gas Unit #1HH | 9,000 | 49737432 |
| 734759 | Mar 8, 2012 | Mar 8, 2012 | Enervest Operating, L.L.C. | Parker | Brown #C 28H | 9,000 | 36735265 |
| 734588 | Mar 8, 2012 | Mar 8, 2012 | Enervest Operating, L.L.C. | Montague | Montague Cattle Unit #1HH | 9,000 | 33734795 |
| 734588Amendment | Mar 8, 2012 | Mar 8, 2012 | Enervest Operating, L.L.C. | Montague | Montague Cattle Unit #1HH | 9,000 | 33734795 |
| 734751 | Mar 2, 2012 | Mar 2, 2012 | Enervest Operating, L.L.C. | Parker | Brown #C 17H | 9,000 | 36735263 |
| 734275 | Mar 2, 2012 | Mar 2, 2012 | Enervest Operating, L.L.C. | Brazos | Lyne, T.B. #1HH | 9,000 | 04132079 |
| 734275Amendment | Mar 2, 2012 | Mar 2, 2012 | Enervest Operating, L.L.C. | Brazos | Lyne, T.B. #1HH | 9,000 | 04132079 |
| 734175 | Mar 1, 2012 | Mar 1, 2012 | Enervest Operating, L.L.C. | Parker | Winston #H 7H | 9,000 | 36735261 |
| 734171 | Mar 1, 2012 | Mar 1, 2012 | Enervest Operating, L.L.C. | Parker | Winston #H 6H | 9,000 | 36735262 |
| 734164 | Mar 1, 2012 | Mar 1, 2012 | Enervest Operating, L.L.C. | Parker | Winston #H 5H | 9,000 | 36735260 |
| 733866 | Feb 27, 2012 | Feb 27, 2012 | Enervest Operating, L.L.C. | Parker | Browder-Dearing #A 21H | 9,000 | 36735257 |
| 733848 | Feb 23, 2012 | Feb 23, 2012 | Enervest Operating, L.L.C. | Parker | Browder-Dearing #A 20H | 9,000 | 36735256 |
| 732661 | Feb 8, 2012 | Feb 8, 2012 | Enervest Operating, L.L.C. | Wise | Enis #2HH | 9,000 | 49737406 |
| 732661Amendment | Feb 8, 2012 | Feb 8, 2012 | Enervest Operating, L.L.C. | Wise | Enis #2HH | 9,000 | 49737406 |
| 732378 | Feb 2, 2012 | Feb 2, 2012 | Enervest Operating, L.L.C. | Brazos | Ann Adams Melvin Unit #2HH | 9,000 | 04132077 |
| 730549Amendment | Jan 23, 2012 | Jan 23, 2012 | Enervest Operating, L.L.C. | Andrews | University 5-35 #2 | 14,000 | 00343823 |
| 730400 | Jan 6, 2012 | Jan 6, 2012 | Enervest Operating, L.L.C. | Wise | T.R.W.D. #B 12H | 9,000 | 49737395 |
| 730643 | Jan 3, 2012 | Jan 3, 2012 | Enervest Operating, L.L.C. | Wise | T.R.W.D. #B 11H | 9,000 | 49737397 |
| 730640 | Jan 3, 2012 | Jan 3, 2012 | Enervest Operating, L.L.C. | Wise | T.R.W.D. #A 7H | 9,000 | 49737396 |
| 729498 | Dec 13, 2011 | Dec 13, 2011 | Enervest Operating, L.L.C. | Parker | Dean #E 15H | 9,000 | 36735239 |
| 729498Amendment | Dec 13, 2011 | Dec 13, 2011 | Enervest Operating, L.L.C. | Parker | Dean #E 15H | 9,000 | 36735239 |
| 729497 | Dec 13, 2011 | Dec 13, 2011 | Enervest Operating, L.L.C. | Parker | Dean #E 14H | 9,000 | 36735238 |
| 729497Amendment | Dec 13, 2011 | Dec 13, 2011 | Enervest Operating, L.L.C. | Parker | Dean #E 14H | 9,000 | 36735238 |
| 729481 | Dec 13, 2011 | Dec 13, 2011 | Enervest Operating, L.L.C. | Parker | Dean #E 9H | 9,000 | 36735237 |
| 729481Amendment | Dec 13, 2011 | Dec 13, 2011 | Enervest Operating, L.L.C. | Parker | Dean #E 9H | 9,000 | 36735237 |
| 728631 | Nov 23, 2011 | Nov 23, 2011 | Enervest Operating, L.L.C. | Washington | Liger Unit #1H | 13,000 | 47730986 |
| 727763 | Nov 9, 2011 | Nov 9, 2011 | Enervest Operating, L.L.C. | Parker | Browder #A 12H | 9,000 | 36735225 |
| 727760 | Nov 9, 2011 | Nov 9, 2011 | Enervest Operating, L.L.C. | Parker | Browder #A 13H | 9,000 | 36735224 |
| 727757 | Nov 9, 2011 | Nov 9, 2011 | Enervest Operating, L.L.C. | Parker | Browder #A 7H | 9,000 | 36735223 |
| 727752 | Nov 9, 2011 | Nov 9, 2011 | Enervest Operating, L.L.C. | Parker | Browder #A 10H | 9,000 | 36735222 |
| 727035 | Oct 31, 2011 | Oct 31, 2011 | Enervest Operating, L.L.C. | Crockett | C. T. Harris #1H | 7,900 | 10541348 |
| 726997 | Oct 31, 2011 | Oct 31, 2011 | Enervest Operating, L.L.C. | Washington | Schawe-Wolff #1HH | 13,500 | 47730985 |
| 726997Amendment | Oct 31, 2011 | Oct 31, 2011 | Enervest Operating, L.L.C. | Washington | Schawe-Wolff #1HH | 13,500 | 47730985 |
| 725490Amendment | Oct 4, 2011 | Oct 4, 2011 | Enervest Operating, L.L.C. | Wise | B. Frye Unit #1HH | 9,000 | 49737375 |
| 725490Amendment | Oct 4, 2011 | Oct 4, 2011 | Enervest Operating, L.L.C. | Wise | B. Frye Unit #1HH | 9,000 | 49737375 |
| 725263Amendment | Sep 30, 2011 | Sep 30, 2011 | Enervest Operating, L.L.C. | Wise | Hammond Unit #1HH | 9,000 | 49737372 |
| 725263Amendment | Sep 30, 2011 | Sep 30, 2011 | Enervest Operating, L.L.C. | Wise | Hammond Unit #1HH | 9,000 | 49737372 |
| 724973Amendment | Sep 27, 2011 | Sep 27, 2011 | Enervest Operating, L.L.C. | Wise | Czewski a Unit #1HH | 9,000 | 49737370 |
| 724970Amendment | Sep 27, 2011 | Sep 27, 2011 | Enervest Operating, L.L.C. | Wise | Czewski B Unit #1HH | 9,000 | 49737369 |
| 724685 | Sep 23, 2011 | Sep 23, 2011 | Enervest Operating, L.L.C. | Lee | Burttschell 'A' #1 | 8,500 | 28731578 |
| 724393 | Sep 23, 2011 | Sep 23, 2011 | Enervest Operating, L.L.C. | Lee | Lou-Ann #1REH | 10,000 | 28731313 |
| 724480 | Sep 21, 2011 | Sep 21, 2011 | Enervest Operating, L.L.C. | Grimes | Abshire Unit #2H | 13,500 | 18530766 |
| 724480Amendment | Sep 21, 2011 | Sep 21, 2011 | Enervest Operating, L.L.C. | Grimes | Abshire Unit #2H | 13,500 | 18530766 |
| 724386Amendment | Sep 20, 2011 | Sep 20, 2011 | Enervest Operating, L.L.C. | Wise | Hodges a Unit #1HH | 9,000 | 49737367 |
| 722926Amendment | Sep 1, 2011 | Sep 1, 2011 | Enervest Operating, L.L.C. | Andrews | University 5-26 #3 | 14,000 | 00343342 |
| 723219 | Aug 31, 2011 | Aug 31, 2011 | Enervest Operating, L.L.C. | Lee | Turner, Ruby #1REH | 10,500 | 28731359 |
| 723219Amendment | Aug 31, 2011 | Aug 31, 2011 | Enervest Operating, L.L.C. | Lee | Turner, Ruby #1REH | 10,500 | 28731359 |
| 723188 | Aug 31, 2011 | Aug 31, 2011 | Enervest Operating, L.L.C. | Washington | Ricks #1REH | 15,000 | 47730759 |
| 722208 | Aug 16, 2011 | Aug 16, 2011 | Enervest Operating, L.L.C. | Parker | Brown #C 34H | 9,000 | 36735197 |
| 722207 | Aug 16, 2011 | Aug 16, 2011 | Enervest Operating, L.L.C. | Parker | Brown #C 35H | 9,000 | 36735194 |
| 722206 | Aug 16, 2011 | Aug 16, 2011 | Enervest Operating, L.L.C. | Parker | Brown #C 33H | 9,000 | 36735193 |
| 722205 | Aug 16, 2011 | Aug 16, 2011 | Enervest Operating, L.L.C. | Parker | Brown #C 27H | 9,000 | 36735195 |
| 721823 | Aug 10, 2011 | Aug 10, 2011 | Enervest Operating, L.L.C. | Washington | Derrick Unit #1REH | 12,000 | 47730729 |
| 721627Amendment | Aug 8, 2011 | Aug 8, 2011 | Enervest Operating, L.L.C. | Andrews | University 8-9 #2 | 18,000 | 00343243 |
| 721481 | Aug 5, 2011 | Aug 5, 2011 | Enervest Operating, L.L.C. | Parker | Dean #J 11H | 9,000 | 36735189 |
| 721474 | Aug 5, 2011 | Aug 5, 2011 | Enervest Operating, L.L.C. | Parker | Dean #J 18H | 9,000 | 36735190 |
| 721471 | Aug 5, 2011 | Aug 5, 2011 | Enervest Operating, L.L.C. | Lee | Ecf Oil Unit 1 #1REH | 10,000 | 28730782 |
| 721251 | Aug 2, 2011 | Aug 2, 2011 | Enervest Operating, L.L.C. | Lee | Ruthven, Shirley #2H | 11,000 | 28732588 |
| 720943 | Jul 27, 2011 | Jul 27, 2011 | Enervest Operating, L.L.C. | Parker | Winston #C 7H | 9,000 | 36735183 |
| 720722 | Jul 25, 2011 | Jul 25, 2011 | Enervest Operating, L.L.C. | Parker | Dean #J 10H | 9,000 | 36735179 |
| 720702 | Jul 25, 2011 | Jul 25, 2011 | Enervest Operating, L.L.C. | Parker | Dean #B 16H | 9,000 | 36735180 |
| 720459 | Jul 25, 2011 | Jul 25, 2011 | Enervest Operating, L.L.C. | Wise | Sr Hill #4H | 9,000 | 49737332 |
| 720420Amendment | Jul 21, 2011 | Jul 21, 2011 | Enervest Operating, L.L.C. | Wise | Sandford Gas Unit #1HH | 9,000 | 49737330 |
| 719480 | Jul 5, 2011 | Jul 5, 2011 | Enervest Operating, L.L.C. | Wise | Sr Hill #3H | 9,000 | 49737324 |
| 719075 | Jun 27, 2011 | Jun 27, 2011 | Enervest Operating, L.L.C. | Harrison | Bartlett-Bailey Gas Unit 1 #7 | 11,800 | 20335069 |
| 718548 | Jun 17, 2011 | Jun 17, 2011 | Enervest Operating, L.L.C. | Parker | Winston #A 10H | 9,000 | 36735172 |
| 718548Amendment | Jun 17, 2011 | Jun 17, 2011 | Enervest Operating, L.L.C. | Parker | Winston #A 10H | 9,000 | 36735172 |
| 718198 | Jun 14, 2011 | Jun 14, 2011 | Enervest Operating, L.L.C. | Parker | Winston #A 9H | 9,000 | 36735171 |
| 718198Amendment | Jun 14, 2011 | Jun 14, 2011 | Enervest Operating, L.L.C. | Parker | Winston #A 9H | 9,000 | 36735171 |
| 718198Amendment | Jun 14, 2011 | Jun 14, 2011 | Enervest Operating, L.L.C. | Parker | Winston #A 9H | 9,000 | 36735171 |
| 718119 | Jun 14, 2011 | Jun 14, 2011 | Enervest Operating, L.L.C. | Parker | Winston #A 11H | 9,000 | 36735170 |