| 739752 | May 15, 2012 | May 15, 2012 | Chesapeake Operating, Inc. | Wilson Unit I Dim #1HH | 9,000 | 12734783 |
| 739627 | May 14, 2012 | May 14, 2012 | Anadarko E&P Company LP | Briscoe Catarina Ranch #54HH | 8,800 | 12734777 |
| 739625 | May 14, 2012 | May 14, 2012 | Anadarko E&P Company LP | Briscoe Catarina Ranch #53HH | 8,800 | 12734778 |
| 739624 | May 14, 2012 | May 14, 2012 | Anadarko E&P Company LP | Briscoe Catarina Ranch #52HH | 8,800 | 12734775 |
| 739623 | May 14, 2012 | May 14, 2012 | Anadarko E&P Company LP | Briscoe Catarina Ranch #51HH | 8,800 | 12734774 |
| 739628 | May 11, 2012 | May 11, 2012 | Anadarko E&P Company LP | Briscoe Catarina Ranch #55HH | 8,800 | 12734776 |
| 739489 | May 11, 2012 | May 11, 2012 | Chesapeake Operating, Inc. | Votaw Unit a Dim #1HH | 9,000 | 12734772 |
| 739484 | May 11, 2012 | May 11, 2012 | Lewis Petro Properties, Inc. | Gates 11-Dr #36HH | 17,000 | 12734771 |
| 739473 | May 11, 2012 | May 11, 2012 | Lewis Petro Properties, Inc. | Gates 11-Dr #35HH | 17,000 | 12734773 |
| 739426 | May 10, 2012 | May 10, 2012 | Shell Western E&P | Piloncillo #A 15HZH | 18,000 | 12734770 |
| 739424 | May 10, 2012 | May 10, 2012 | Shell Western E&P | Piloncillo #A 15HYH | 18,000 | 12734769 |
| 739423 | May 10, 2012 | May 10, 2012 | Shell Western E&P | Piloncillo #A 15HXH | 18,000 | 12734768 |
| 739421 | May 10, 2012 | May 10, 2012 | Shell Western E&P | Piloncillo #A 15HWH | 18,000 | 12734767 |
| 739420 | May 10, 2012 | May 10, 2012 | Shell Western E&P | Piloncillo #A 15HMH | 18,000 | 12734766 |
| 739418 | May 10, 2012 | May 10, 2012 | Shell Western E&P | Piloncillo #A 15HLH | 18,000 | 12734765 |
| 739388 | May 10, 2012 | May 10, 2012 | Chesapeake Operating, Inc. | Lazy a Cotulla #I 4HH | 9,000 | 12734763 |
| 739387 | May 10, 2012 | May 10, 2012 | Chesapeake Operating, Inc. | Lazy a Cotulla #I 1HH | 9,000 | 12734764 |
| 739385 | May 10, 2012 | May 10, 2012 | Chesapeake Operating, Inc. | Lazy a Cotulla #J 1HH | 9,000 | 12734762 |
| 739337 | May 10, 2012 | May 10, 2012 | Chesapeake Operating, Inc. | Butterfly Dim #J 4HH | 9,000 | 12734760 |
| 739333 | May 10, 2012 | May 10, 2012 | Chesapeake Operating, Inc. | Harper Unit C Dim #1HH | 9,000 | 12734759 |
| 739333Amendment | May 10, 2012 | May 10, 2012 | Chesapeake Operating, Inc. | Harper Unit C Dim #1HH | 9,000 | 12734759 |
| 739136 | May 9, 2012 | May 9, 2012 | Anadarko E&P Company LP | Briscoe Catarina Ranch #50HH | 8,800 | 12734758 |
| 739129 | May 9, 2012 | May 9, 2012 | Anadarko E&P Company LP | Briscoe Catarina Ranch #47HH | 8,800 | 12734755 |
| 739072 | May 9, 2012 | May 9, 2012 | Chesapeake Operating, Inc. | Valley Wells Unit 2 Dim #K 3HH | 9,000 | 12734752 |
| 739040 | May 9, 2012 | May 9, 2012 | Chesapeake Operating, Inc. | Valley Wells Unit 4 Dim #K 1HH | 9,000 | 12734750 |
| 739135 | May 8, 2012 | May 8, 2012 | Anadarko E&P Company LP | Briscoe Catarina Ranch #49HH | 8,800 | 12734757 |
| 739134 | May 8, 2012 | May 8, 2012 | Anadarko E&P Company LP | Briscoe Catarina Ranch #48HH | 8,800 | 12734756 |
| 739115 | May 8, 2012 | May 8, 2012 | Anadarko E&P Company LP | Briscoe Catarina Ranch #46HH | 8,800 | 12734754 |
| 739108 | May 8, 2012 | May 8, 2012 | Chesapeake Operating, Inc. | Dullnig Unit C Dim #4HH | 9,000 | 12734753 |
| 739108Amendment | May 8, 2012 | May 8, 2012 | Chesapeake Operating, Inc. | Dullnig Unit C Dim #4HH | 9,000 | 12734753 |
| 739033 | May 8, 2012 | May 8, 2012 | Chesapeake Operating, Inc. | Valley Wells Unit 1 Dim #K 5HH | 9,000 | 12734749 |
| 738957 | May 7, 2012 | May 7, 2012 | Anadarko E&P Company LP | Diamond H Ranch #10HH | 8,650 | 12734751 |
| 738929 | May 7, 2012 | May 7, 2012 | Chesapeake Operating, Inc. | Faith San Pedro #E 4HH | 9,000 | 12734748 |
| 738929Amendment | May 7, 2012 | May 7, 2012 | Chesapeake Operating, Inc. | Faith San Pedro #E 4HH | 9,000 | 12734748 |
| 737726 | May 5, 2012 | May 5, 2012 | Chesapeake Operating, Inc. | Flat Creek Unit G Dim #3HH | 9,000 | 12734702 |
| 738890 | May 4, 2012 | May 4, 2012 | Anadarko E&P Company LP | Diamond H State #10HH | 7,700 | 12736436 |
| 738860 | May 4, 2012 | May 4, 2012 | Chesapeake Operating, Inc. | Towers Dim #A 1HH | 9,000 | 12734746 |
| 738757 | May 4, 2012 | May 4, 2012 | Chesapeake Operating, Inc. | Pitman Dim A #2HH | 9,000 | 12734745 |
| 729283 | May 4, 2012 | May 4, 2012 | Anadarko E&P Company LP | Rogers Dentonio 16 Unit #3HH | 7,700 | 12734431 |
| 729283Amendment | May 4, 2012 | May 4, 2012 | Anadarko E&P Onshore LLC | Rogers Dentonio 16 Unit #3HH | 7,500 | 12734431 |
| 738755 | May 3, 2012 | May 3, 2012 | Chesapeake Operating, Inc. | Pitman Dim A #1HH | 9,000 | 12734744 |
| 738755Amendment | May 3, 2012 | May 3, 2012 | Chesapeake Operating, Inc. | Pitman Dim A #1HH | 9,000 | 12734744 |
| 738712 | May 3, 2012 | May 3, 2012 | Chesapeake Operating, Inc. | Pitman Unit Dim B #1HH | 9,000 | 12734743 |
| 738141 | May 3, 2012 | May 3, 2012 | Chesapeake Operating, Inc. | Kim Dim #B 1HH | 9,000 | 12734734 |
| 738578 | May 1, 2012 | May 1, 2012 | Chesapeake Operating, Inc. | Haning Unit B Dim #1HH | 9,000 | 12734742 |
| 738480 | May 1, 2012 | May 1, 2012 | Chesapeake Operating, Inc. | Faith-San Pedro #E 3HH | 9,000 | 12734741 |
| 738480Amendment | May 1, 2012 | May 1, 2012 | Chesapeake Operating, Inc. | Faith-San Pedro #E 3HH | 9,000 | 12734741 |
| 738367 | Apr 28, 2012 | Apr 28, 2012 | Chesapeake Operating, Inc. | Votaw North Unit C Dim #1HH | 9,000 | 12734735 |
| 738319 | Apr 27, 2012 | Apr 27, 2012 | Shell Western E&P | Piloncillo #A 13HZH | 18,000 | 12734740 |
| 738318 | Apr 27, 2012 | Apr 27, 2012 | Shell Western E&P | Piloncillo #A 13HYH | 18,000 | 12734737 |
| 738316 | Apr 27, 2012 | Apr 27, 2012 | Shell Western E&P | Piloncillo #A 13HXH | 18,000 | 12734732 |
| 738315 | Apr 27, 2012 | Apr 27, 2012 | Shell Western E&P | Piloncillo #A 13HWH | 18,000 | 12734733 |
| 738314 | Apr 27, 2012 | Apr 27, 2012 | Shell Western E&P | Piloncillo #A 13HVH | 18,000 | 12734731 |
| 738184 | Apr 27, 2012 | Apr 27, 2012 | Lewis Petro Properties, Inc. | Cotulla #13HH | 17,000 | 12734738 |
| 738208 | Apr 26, 2012 | Apr 26, 2012 | Chesapeake Operating, Inc. | Blakeway Unit H Dim #2HH | 9,000 | 12734730 |
| 738165 | Apr 25, 2012 | Apr 25, 2012 | Anadarko E&P Company LP | Briscoe Catarina West #50HH | 8,900 | 12734728 |
| 738163 | Apr 25, 2012 | Apr 25, 2012 | Anadarko E&P Company LP | Briscoe Catarina West #49HH | 8,900 | 12734727 |
| 738162 | Apr 25, 2012 | Apr 25, 2012 | Anadarko E&P Company LP | Briscoe Catarina West #48HH | 8,900 | 12734726 |
| 737867 | Apr 25, 2012 | Apr 25, 2012 | Chesapeake Operating, Inc. | Dennis Unit Dim B #1HH | 9,000 | 12734739 |
| 738115 | Apr 24, 2012 | Apr 24, 2012 | Anadarko E&P Company LP | Briscoe Catarina West #47HH | 8,900 | 12734725 |
| 738109 | Apr 24, 2012 | Apr 24, 2012 | Anadarko E&P Company LP | Briscoe Catarina West #46HH | 8,900 | 12734722 |
| 738108 | Apr 24, 2012 | Apr 24, 2012 | Murphy Expl. & Prod. Co. - USA | Stumberg Estate #4HH | 7,155 | 12734721 |
| 738106 | Apr 24, 2012 | Apr 24, 2012 | Anadarko E&P Company LP | Briscoe Catarina West #45HH | 8,900 | 12734719 |
| 738100 | Apr 24, 2012 | Apr 24, 2012 | Anadarko E&P Company LP | Briscoe Catarina West #44HH | 8,900 | 12734718 |
| 738098 | Apr 24, 2012 | Apr 24, 2012 | Anadarko E&P Company LP | Briscoe Catarina West #43HH | 8,900 | 12734720 |
| 738097 | Apr 24, 2012 | Apr 24, 2012 | Anadarko E&P Company LP | Briscoe Catarina West #42HH | 8,900 | 12734717 |
| 738079 | Apr 24, 2012 | Apr 24, 2012 | Rosetta Resources Operating LP | Briscoe Ranch EF #7H | 8,000 | 12734715 |
| 738077 | Apr 24, 2012 | Apr 24, 2012 | Rosetta Resources Operating LP | Briscoe Ranch EF #6H | 8,000 | 12734714 |
| 738070 | Apr 24, 2012 | Apr 24, 2012 | Rosetta Resources Operating LP | Briscoe Ranch EF #5H | 8,000 | 12734716 |
| 738043 | Apr 24, 2012 | Apr 24, 2012 | Murphy Expl. & Prod. Co. - USA | Stumberg Estate #3HH | 7,170 | 12734712 |
| 738041 | Apr 24, 2012 | Apr 24, 2012 | Murphy Expl. & Prod. Co. - USA | Stumberg Estate #2HH | 7,035 | 12734711 |
| 737888 | Apr 24, 2012 | Apr 24, 2012 | Murphy Expl. & Prod. Co. - USA | Briggs Unit A #1HH | 8,028 | 12734736 |
| 738030 | Apr 23, 2012 | Apr 23, 2012 | Chesapeake Operating, Inc. | Kim Dim #A 1HH | 9,000 | 12734713 |
| 738012 | Apr 23, 2012 | Apr 23, 2012 | Murphy Expl. & Prod. Co. - USA | Briggs Unit B #2HH | 8,129 | 12734707 |
| 738006 | Apr 23, 2012 | Apr 23, 2012 | Murphy Expl. & Prod. Co. - USA | Briggs Unit B #1HH | 8,129 | 12734706 |
| 737898 | Apr 23, 2012 | Apr 23, 2012 | Murphy Expl. & Prod. Co. - USA | Briggs Unit A #2HH | 8,023 | 12734709 |
| 737932 | Apr 21, 2012 | Apr 21, 2012 | Shell Western E&P | Piloncillo #A 11HFH | 18,000 | 12734723 |
| 737931 | Apr 21, 2012 | Apr 21, 2012 | Shell Western E&P | Piloncillo #A 11HEH | 18,000 | 12734724 |
| 737930 | Apr 21, 2012 | Apr 21, 2012 | Shell Western E&P | Piloncillo #A 11HDH | 18,000 | 12734708 |
| 737929 | Apr 21, 2012 | Apr 21, 2012 | Shell Western E&P | Piloncillo #A 11HCH | 18,000 | 12734703 |
| 737928 | Apr 21, 2012 | Apr 21, 2012 | Shell Western E&P | Piloncillo #A 11HBH | 18,000 | 12734704 |
| 737927 | Apr 21, 2012 | Apr 21, 2012 | Shell Western E&P | Piloncillo #A 11HAH | 18,000 | 12734729 |
| 737927Amendment | Apr 21, 2012 | Apr 21, 2012 | Shell Western E&P | Piloncillo #A 11HAH | 18,000 | 12734729 |
| 737853 | Apr 21, 2012 | Apr 21, 2012 | Texas American Resources Company | Bowman-Anderson Unit #1HH | 6,893 | 12734705 |
| 738019 | Apr 20, 2012 | Apr 20, 2012 | Anadarko E&P Company LP | Stumberg Ranch #27HRH | 8,000 | 12734710 |
| 737641 | Apr 20, 2012 | Apr 20, 2012 | Murphy Expl. & Prod. Co. - USA | Stumberg Estate #1HH | 7,035 | 12734701 |
| 737775 | Apr 19, 2012 | Apr 19, 2012 | Anadarko E&P Company LP | Briscoe Catarina West #41HH | 8,800 | 12734697 |
| 737774 | Apr 19, 2012 | Apr 19, 2012 | Anadarko E&P Company LP | Briscoe Catarina West #40HH | 8,800 | 12734696 |
| 737772 | Apr 19, 2012 | Apr 19, 2012 | Anadarko E&P Company LP | Briscoe Catarina West #39HH | 8,800 | 12734695 |
| 737771 | Apr 19, 2012 | Apr 19, 2012 | Anadarko E&P Company LP | Briscoe Catarina West #38HH | 8,800 | 12734694 |
| 737767 | Apr 19, 2012 | Apr 19, 2012 | Anadarko E&P Company LP | Briscoe Catarina West #37HH | 8,800 | 12734693 |
| 737763 | Apr 19, 2012 | Apr 19, 2012 | Anadarko E&P Company LP | Briscoe Catarina West #36HH | 8,800 | 12734690 |
| 737606 | Apr 19, 2012 | Apr 19, 2012 | Anadarko E&P Company LP | Briscoe Catarina West #35HH | 8,800 | 12734689 |
| 737606Amendment | Apr 19, 2012 | Apr 19, 2012 | Anadarko E&P Onshore LLC | Briscoe Catarina West #35HH | 7,806 | 12734689 |
| 737603 | Apr 19, 2012 | Apr 19, 2012 | Anadarko E&P Company LP | Briscoe Catarina West #34HH | 8,800 | 12734687 |
| 737601 | Apr 19, 2012 | Apr 19, 2012 | Anadarko E&P Company LP | Briscoe Catarina West #33HH | 8,800 | 12734686 |
| 737589 | Apr 19, 2012 | Apr 19, 2012 | Anadarko E&P Company LP | Briscoe Catarina West #32HH | 8,800 | 12734685 |
| 737588 | Apr 19, 2012 | Apr 19, 2012 | Anadarko E&P Company LP | Briscoe Catarina West #31HH | 8,800 | 12734684 |
| 737581 | Apr 19, 2012 | Apr 19, 2012 | Anadarko E&P Company LP | Briscoe Catarina West #30HH | 8,800 | 12734682 |
| 737573 | Apr 19, 2012 | Apr 19, 2012 | Newfield Exploration Company | Cmww A #104HH | 8,000 | 12734700 |