| 737517 | Apr 19, 2012 | Apr 19, 2012 | Chesapeake Operating, Inc. | Haning Unit A #1HH | 9,000 | 12734699 |
| 737488 | Apr 19, 2012 | Apr 19, 2012 | Chesapeake Operating, Inc. | Hermann Hatch Unit Dim #A 1HH | 9,000 | 12734691 |
| 737478 | Apr 18, 2012 | Apr 18, 2012 | Chesapeake Operating, Inc. | Helmcamp State Unit D Dim #2HH | 9,000 | 12734688 |
| 737477 | Apr 18, 2012 | Apr 18, 2012 | Chesapeake Operating, Inc. | Helmcamp State Unit B Dim #2HH | 9,000 | 12734698 |
| 737475 | Apr 18, 2012 | Apr 18, 2012 | Chesapeake Operating, Inc. | Helmcamp State Unit a Dim #2HH | 9,000 | 12734692 |
| 737458 | Apr 18, 2012 | Apr 18, 2012 | Chesapeake Operating, Inc. | Flat Creek Unit E Dim #2HH | 9,000 | 12734683 |
| 737458Amendment | Apr 18, 2012 | Apr 18, 2012 | Chesapeake Operating, Inc. | Flat Creek Unit E Dim #2HH | 9,000 | 12734683 |
| 737417 | Apr 18, 2012 | Apr 18, 2012 | Shell Western E&P | Piloncillo #A 10HDH | 18,000 | 12734681 |
| 737416 | Apr 18, 2012 | Apr 18, 2012 | Shell Western E&P | Piloncillo #A 10HCH | 18,000 | 12734679 |
| 737415 | Apr 18, 2012 | Apr 18, 2012 | Shell Western E&P | Piloncillo #A 10HBH | 18,000 | 12734678 |
| 737414 | Apr 18, 2012 | Apr 18, 2012 | Shell Western E&P | Piloncillo #A 10HAH | 18,000 | 12734680 |
| 737371 | Apr 17, 2012 | Apr 17, 2012 | Anadarko E&P Company LP | South Spur Unit A #6HH | 7,950 | 12734676 |
| 737353 | Apr 17, 2012 | Apr 17, 2012 | Anadarko E&P Company LP | South Spur Unit A #5HH | 7,950 | 12734677 |
| 737346 | Apr 17, 2012 | Apr 17, 2012 | Anadarko E&P Company LP | South Spur Unit A #4HH | 7,950 | 12734675 |
| 737018 | Apr 12, 2012 | Apr 12, 2012 | El Paso E & P Company, L. P. | Ritchie Farms #23HH | 9,600 | 12734674 |
| 737011 | Apr 12, 2012 | Apr 12, 2012 | El Paso E & P Company, L. P. | Ritchie Farms #22HH | 9,600 | 12734673 |
| 736762 | Apr 12, 2012 | Apr 12, 2012 | Lewis Petro Properties, Inc. | Gates 11-Dr #28HH | 17,000 | 12734664 |
| 736836 | Apr 10, 2012 | Apr 10, 2012 | Chesapeake Operating, Inc. | Poco Mas Ranch Unit D Dim #3HH | 9,000 | 12734663 |
| 736836Amendment | Apr 10, 2012 | Apr 10, 2012 | Chesapeake Operating, Inc. | Poco Mas Ranch Unit D Dim #3HH | 9,000 | 12734663 |
| 736836Amendment | Apr 10, 2012 | Apr 10, 2012 | Chesapeake Operating, Inc. | Poco Mas Ranch Unit D Dim #3HH | 9,000 | 12734663 |
| 736904 | Apr 9, 2012 | Apr 9, 2012 | Anadarko E&P Company LP | Stumberg Ranch #35HH | 9,000 | 12734669 |
| 736899 | Apr 9, 2012 | Apr 9, 2012 | Anadarko E&P Company LP | Stumberg Ranch #34HH | 9,000 | 12734670 |
| 736890 | Apr 9, 2012 | Apr 9, 2012 | Anadarko E&P Company LP | Stumberg Ranch #33HH | 9,000 | 12734667 |
| 736879 | Apr 9, 2012 | Apr 9, 2012 | Anadarko E&P Company LP | Stumberg Ranch #32HH | 9,000 | 12734666 |
| 736874 | Apr 9, 2012 | Apr 9, 2012 | Anadarko E&P Company LP | Stumberg Ranch #31HH | 9,000 | 12734668 |
| 736869 | Apr 9, 2012 | Apr 9, 2012 | Anadarko E&P Company LP | Stumberg Ranch #30HH | 9,000 | 12734665 |
| 736719 | Apr 9, 2012 | Apr 9, 2012 | Rosetta Resources Operating LP | Light Ranch #4H | 8,200 | 12734671 |
| 736696 | Apr 9, 2012 | Apr 9, 2012 | Newfield Exploration Company | Moro Creek #3304HH | 7,700 | 12734662 |
| 736585 | Apr 9, 2012 | Apr 9, 2012 | Chesapeake Operating, Inc. | Arthur Unit Dim #A 1HH | 9,000 | 12734660 |
| 736721 | Apr 6, 2012 | Apr 6, 2012 | Rosetta Resources Operating LP | Light Ranch #5H | 7,800 | 12734661 |
| 736473 | Apr 5, 2012 | Apr 5, 2012 | Chesapeake Operating, Inc. | Faith Bonita N Unit #K 1HH | 9,000 | 12734658 |
| 736473Amendment | Apr 5, 2012 | Apr 5, 2012 | Chesapeake Operating, Inc. | Faith Bonita N Unit #K 1HH | 9,000 | 12734658 |
| 736473Amendment | Apr 5, 2012 | Apr 5, 2012 | Chesapeake Operating, Inc. | Faith Bonita N Unit #K 1HH | 9,000 | 12734658 |
| 736456 | Apr 4, 2012 | Apr 4, 2012 | Chesapeake Operating, Inc. | Faith Bonita P Unit #K 1HH | 9,000 | 12734654 |
| 736456Amendment | Apr 4, 2012 | Apr 4, 2012 | Chesapeake Operating, Inc. | Faith Bonita P Unit #K 1HH | 9,000 | 12734654 |
| 736200 | Apr 4, 2012 | Apr 4, 2012 | Chesapeake Operating, Inc. | Sako-Watson Unit I Dim #B 1HH | 9,000 | 12734672 |
| 736200Amendment | Apr 4, 2012 | Apr 4, 2012 | Chesapeake Operating, Inc. | Sako-Watson Unit I Dim #B 1HH | 9,000 | 12734672 |
| 736200Amendment | Apr 4, 2012 | Apr 4, 2012 | Chesapeake Operating, Inc. | Sako-Watson Unit I Dim #B 1HH | 9,000 | 12734672 |
| 736200Amendment | Apr 4, 2012 | Apr 4, 2012 | Chesapeake Operating, Inc. | Sako-Watson Unit I Dim #B 1HH | 9,000 | 12734672 |
| 736476 | Apr 3, 2012 | Apr 3, 2012 | Chesapeake Operating, Inc. | Faith Bonita O Unit #K 1HH | 9,000 | 12734655 |
| 736476Amendment | Apr 3, 2012 | Apr 3, 2012 | Chesapeake Operating, Inc. | Faith Bonita O Unit #K 1HH | 9,000 | 12734655 |
| 736476Amendment | Apr 3, 2012 | Apr 3, 2012 | Chesapeake Operating, Inc. | Faith Bonita O Unit #K 1HH | 9,000 | 12734655 |
| 736441 | Apr 3, 2012 | Apr 3, 2012 | Chesapeake Operating, Inc. | Flat Creek Unit C Dim #2HH | 9,000 | 12734653 |
| 736416 | Apr 2, 2012 | Apr 2, 2012 | Chesapeake Operating, Inc. | Flat Creek Unit D Dim #2HH | 9,000 | 12734652 |
| 736416Amendment | Apr 2, 2012 | Apr 2, 2012 | Chesapeake Operating, Inc. | Flat Creek Unit D Dim #4HH | 9,000 | 12734652 |
| 736214 | Apr 2, 2012 | Apr 2, 2012 | Chesapeake Operating, Inc. | Faith Bonita Q Unit #K 1HH | 9,000 | 12734644 |
| 736214Amendment | Apr 2, 2012 | Apr 2, 2012 | Chesapeake Operating, Inc. | Faith Bonita Q Unit #K 1HH | 9,000 | 12734644 |
| 736214Amendment | Apr 2, 2012 | Apr 2, 2012 | Chesapeake Operating, Inc. | Faith Bonita Q Unit #K 1HH | 9,000 | 12734644 |
| 736539 | Mar 30, 2012 | Mar 30, 2012 | SM Energy Company | Briscoe Catarina East #3HH | 12,000 | 12734650 |
| 736539Amendment | Mar 30, 2012 | Mar 30, 2012 | SM Energy Company | Briscoe Catarina East GU1 #3HH | 12,000 | 12734650 |
| 736536 | Mar 30, 2012 | Mar 30, 2012 | SM Energy Company | Briscoe Catarina East #2HH | 12,000 | 12734651 |
| 736536Amendment | Mar 30, 2012 | Mar 30, 2012 | SM Energy Company | Briscoe Catarina East GU1 #2HH | 12,000 | 12734651 |
| 736494 | Mar 30, 2012 | Mar 30, 2012 | SM Energy Company | Briscoe Catarina East #1HH | 10,000 | 12734649 |
| 736494Amendment | Mar 30, 2012 | Mar 30, 2012 | SM Energy Company | Briscoe Catarina East GU1 #1HH | 10,000 | 12734649 |
| 736341 | Mar 30, 2012 | Mar 30, 2012 | Newfield Exploration Company | Cmww A #101HH | 7,800 | 12734648 |
| 736320 | Mar 30, 2012 | Mar 30, 2012 | Chesapeake Operating, Inc. | Flat Creek Unit I Dim #1HH | 9,000 | 12734647 |
| 736451 | Mar 29, 2012 | Mar 29, 2012 | Chesapeake Operating, Inc. | Flat Creek Unit B Dim #1HH | 9,000 | 12734656 |
| 736254 | Mar 29, 2012 | Mar 29, 2012 | Chesapeake Operating, Inc. | Tauber Unit a Dim #5HH | 9,000 | 12734645 |
| 736254Amendment | Mar 29, 2012 | Mar 29, 2012 | Chesapeake Operating, Inc. | Tauber Unit a Dim #5HH | 9,000 | 12734645 |
| 736240 | Mar 29, 2012 | Mar 29, 2012 | Chesapeake Operating, Inc. | Haning Dim #C 2HH | 9,000 | 12734657 |
| 734269 | Mar 29, 2012 | Mar 29, 2012 | Lightning Oil Company | Cutlass West A #1H | 9,200 | 12734592 |
| 736203 | Mar 28, 2012 | Mar 28, 2012 | Chesapeake Operating, Inc. | Poco Mas Ranch Unit F Dim #2HH | 9,000 | 12734642 |
| 736202 | Mar 28, 2012 | Mar 28, 2012 | Chesapeake Operating, Inc. | Poco Mas Ranch Unit E Dim #3HH | 9,000 | 12734643 |
| 736199 | Mar 28, 2012 | Mar 28, 2012 | Chesapeake Operating, Inc. | Poco Mas Ranch Unit C Dim #3HH | 9,000 | 12734640 |
| 736199Amendment | Mar 28, 2012 | Mar 28, 2012 | Chesapeake Operating, Inc. | Poco Mas Ranch Unit C Dim #3HH | 9,000 | 12734640 |
| 736199Amendment | Mar 28, 2012 | Mar 28, 2012 | Chesapeake Operating, Inc. | Poco Mas Ranch Unit C Dim #3HH | 9,000 | 12734640 |
| 736198 | Mar 28, 2012 | Mar 28, 2012 | Chesapeake Operating, Inc. | Poco Mas Ranch Unit B Dim #1HH | 9,000 | 12734641 |
| 736020 | Mar 28, 2012 | Mar 28, 2012 | Chesapeake Operating, Inc. | Ramirez Dim #B 1HH | 9,000 | 12734635 |
| 736116 | Mar 27, 2012 | Mar 27, 2012 | Chesapeake Operating, Inc. | Flat Creek Unit a Dim #2HH | 9,000 | 12734639 |
| 736022 | Mar 27, 2012 | Mar 27, 2012 | Chesapeake Operating, Inc. | Ramirez Dim #B 4HH | 9,000 | 12734636 |
| 734117 | Mar 27, 2012 | Mar 27, 2012 | El Paso E & P Company, L. P. | Ritchie Farms #21HH | 9,600 | 12734593 |
| 734117Amendment | Mar 27, 2012 | Mar 27, 2012 | El Paso E & P Company, L. P. | Ritchie Farms #21HH | 9,600 | 12734593 |
| 734097 | Mar 27, 2012 | Mar 27, 2012 | El Paso E & P Company, L. P. | Ritchie Farms #20HH | 9,600 | 12734591 |
| 734097Amendment | Mar 27, 2012 | Mar 27, 2012 | El Paso E & P Company, L. P. | Ritchie Farms #20HH | 9,600 | 12734591 |
| 736059 | Mar 26, 2012 | Mar 26, 2012 | Chesapeake Operating, Inc. | Dullnig Unit D Dim #1HH | 9,000 | 12734638 |
| 735961 | Mar 26, 2012 | Mar 26, 2012 | Chesapeake Operating, Inc. | Dullnig Unit E Dim #2HH | 9,000 | 12734633 |
| 736002 | Mar 24, 2012 | Mar 24, 2012 | Chesapeake Operating, Inc. | Ramirez Dim #A 5HH | 9,000 | 12734634 |
| 735975 | Mar 24, 2012 | Mar 24, 2012 | Chesapeake Operating, Inc. | Gringita Dim #A 3HH | 9,000 | 12734632 |
| 735975Amendment | Mar 24, 2012 | Mar 24, 2012 | Chesapeake Operating, Inc. | Gringita Dim #A 3HH | 9,000 | 12734632 |
| 735930 | Mar 24, 2012 | Mar 24, 2012 | Chesapeake Operating, Inc. | Helmcamp State Dim A #1HH | 9,000 | 12734631 |
| 735909 | Mar 24, 2012 | Mar 24, 2012 | Chesapeake Operating, Inc. | Ramirez Dim #A 2HH | 9,000 | 12734630 |
| 735864 | Mar 24, 2012 | Mar 24, 2012 | Anadarko E&P Company LP | La Bandera Ranch #9HH | 7,500 | 12734629 |
| 735846 | Mar 24, 2012 | Mar 24, 2012 | Chesapeake Operating, Inc. | Harper Unit B Dim #1HH | 9,000 | 12734628 |
| 735846Amendment | Mar 24, 2012 | Mar 24, 2012 | Chesapeake Operating, Inc. | Harper Unit B Dim #1HH | 9,000 | 12734628 |
| 736182 | Mar 23, 2012 | Mar 23, 2012 | Newfield Exploration Company | Ferguson-McKnight #5262HH | 6,000 | 12734637 |
| 735520 | Mar 21, 2012 | Mar 21, 2012 | Chesapeake Operating, Inc. | Henrichson Unit F Dim #1HH | 9,000 | 12734625 |
| 735278 | Mar 20, 2012 | Mar 20, 2012 | Chesapeake Operating, Inc. | Faith Toro Dim #A 8HH | 9,000 | 12734627 |
| 735278Amendment | Mar 20, 2012 | Mar 20, 2012 | Chesapeake Operating, Inc. | Faith Toro Dim #A 8HH | 9,000 | 12734627 |
| 735328 | Mar 19, 2012 | Mar 19, 2012 | Chesapeake Operating, Inc. | Faith-San Pedro #A 1HTH | 9,000 | 12734626 |
| 735328Amendment | Mar 19, 2012 | Mar 19, 2012 | Chesapeake Operating, Inc. | Faith-San Pedro #A 1HTH | 9,000 | 12734626 |
| 735368 | Mar 16, 2012 | Mar 16, 2012 | Chesapeake Operating, Inc. | Gringita Dim #C 3HH | 9,000 | 12734621 |
| 735368Amendment | Mar 16, 2012 | Mar 16, 2012 | Chesapeake Operating, Inc. | Gringita Dim #C 3HH | 9,000 | 12734621 |
| 735348 | Mar 16, 2012 | Mar 16, 2012 | Anadarko E&P Company LP | Stumberg Ranch #29HH | 8,000 | 12734624 |
| 735347 | Mar 16, 2012 | Mar 16, 2012 | Anadarko E&P Company LP | Stumberg Ranch #28HH | 8,000 | 12734623 |
| 735343 | Mar 16, 2012 | Mar 16, 2012 | Anadarko E&P Company LP | Stumberg Ranch #27HH | 8,000 | 12734622 |
| 735338 | Mar 16, 2012 | Mar 16, 2012 | Anadarko E&P Company LP | Stumberg Ranch #26HH | 8,000 | 12734620 |
| 735334 | Mar 16, 2012 | Mar 16, 2012 | Anadarko E&P Company LP | Stumberg Ranch #25HH | 8,000 | 12734619 |
| 735325 | Mar 16, 2012 | Mar 16, 2012 | Chesapeake Operating, Inc. | Faith Toro Dim K Unit #A 1HH | 9,000 | 12734618 |
| 735324 | Mar 15, 2012 | Mar 15, 2012 | Chesapeake Operating, Inc. | Faith Toro Dim J Unit #A 1HH | 9,000 | 12734617 |
| 735324Amendment | Mar 15, 2012 | Mar 15, 2012 | Chesapeake Operating, Inc. | Faith Toro Dim J Unit #A 1HH | 9,000 | 12734617 |