| 710991 | Feb 28, 2011 | Feb 28, 2011 | Anadarko E&P Company LP | Briscoe Cochina West Ranch #6HH | 9,000 | 12733904 |
| 710991Amendment | Feb 28, 2011 | Feb 28, 2011 | Anadarko E&P Company LP | Briscoe Cochina West Ranch #6HH | 9,000 | 12733904 |
| 710972 | Feb 28, 2011 | Feb 28, 2011 | Murphy Expl. & Prod. Co. - USA | Kone #1HH | 7,440 | 12733906 |
| 710873 | Feb 25, 2011 | Feb 25, 2011 | Anadarko E&P Company LP | Briscoe Cochina West Ranch #5HH | 9,000 | 12733903 |
| 710774 | Feb 25, 2011 | Feb 25, 2011 | Newfield Exploration Company | Cmww A #4402HH | 7,800 | 12733902 |
| 710292 | Feb 23, 2011 | Feb 23, 2011 | Anadarko E&P Company LP | Briscoe Carla Ranch #25HH | 8,200 | 12733895 |
| 710289 | Feb 23, 2011 | Feb 23, 2011 | Anadarko E&P Company LP | Briscoe Carla Ranch #24HH | 8,200 | 12733894 |
| 710153 | Feb 22, 2011 | Feb 22, 2011 | Anadarko E&P Company LP | Diamond H Ranch #4HH | 8,700 | 12733892 |
| 710082 | Feb 22, 2011 | Feb 22, 2011 | Sage Energy Company | Kothmann #1H | 5,120 | 12733344 |
| 710082Amendment | Feb 22, 2011 | Feb 22, 2011 | Sage Energy Company | Kothmann #1H | 5,120 | 12733344 |
| 710505 | Feb 21, 2011 | Feb 21, 2011 | Chesapeake Operating, Inc. | Naegelia #A 4HH | 9,000 | 12733900 |
| 710500 | Feb 21, 2011 | Feb 21, 2011 | Chesapeake Operating, Inc. | Naegeli #C 1HH | 9,000 | 12733899 |
| 710499 | Feb 21, 2011 | Feb 21, 2011 | Chesapeake Operating, Inc. | Naegeli #B 3HH | 9,000 | 12733898 |
| 710497 | Feb 21, 2011 | Feb 21, 2011 | Chesapeake Operating, Inc. | Naegeli #B 1HH | 9,000 | 12733897 |
| 710287 | Feb 17, 2011 | Feb 17, 2011 | Anadarko E&P Company LP | Briscoe Carla Ranch #23HH | 8,200 | 12733893 |
| 710348 | Feb 16, 2011 | Feb 16, 2011 | Select Energy Services, LLC | Pecan Tree SWD #1 | 9,000 | 12733896 |
| 710348Amendment | Feb 16, 2011 | Feb 16, 2011 | Select Energy Services, LLC | Pecan Tree SWD #1 | 9,500 | 12733896 |
| 710095 | Feb 14, 2011 | Feb 14, 2011 | Anadarko E&P Company LP | Briscoe Carla Ranch #21HH | 8,200 | 12733891 |
| 710076 | Feb 14, 2011 | Feb 14, 2011 | Anadarko E&P Company LP | Briscoe Carla Ranch #20HH | 8,200 | 12733890 |
| 710075 | Feb 14, 2011 | Feb 14, 2011 | Anadarko E&P Company LP | Briscoe Carla Ranch #19HH | 8,200 | 12733889 |
| 709936 | Feb 11, 2011 | Feb 11, 2011 | South Oil, Inc. | El Cid 'A' #6H | 7,200 | 12732919 |
| 709842 | Feb 9, 2011 | Feb 9, 2011 | Chesapeake Operating, Inc. | Faith-San Pedro #C 2HH | 9,000 | 12733888 |
| 708402 | Feb 8, 2011 | Feb 8, 2011 | Chesapeake Operating, Inc. | Lazy a Cotulla #M 3HH | 9,000 | 12733868 |
| 709670 | Feb 7, 2011 | Feb 7, 2011 | Chesapeake Operating, Inc. | Allee Unit B #1HH | 9,000 | 12733887 |
| 709517 | Feb 3, 2011 | Feb 3, 2011 | Chesapeake Operating, Inc. | Naegelia #A 2HH | 9,000 | 12733886 |
| 709466 | Feb 3, 2011 | Feb 3, 2011 | Anadarko E&P Company LP | Briscoe Carla Ranch #22HH | 8,200 | 12733885 |
| 709369 | Feb 1, 2011 | Feb 1, 2011 | Peregrine Petroleum, LLC | Montemayor #1HH | 6,000 | 12733884 |
| 709216 | Jan 31, 2011 | Jan 31, 2011 | Newfield Exploration Company | Cmww A #4401HH | 8,000 | 12733883 |
| 709216Amendment | Jan 31, 2011 | Jan 31, 2011 | Newfield Exploration Company | Cmww A #4401HH | 7,100 | 12733883 |
| 709023 | Jan 27, 2011 | Jan 27, 2011 | Killam Oil Co., Ltd. | Brymer Unit #3HH | 6,900 | 12733882 |
| 708967 | Jan 27, 2011 | Jan 27, 2011 | Newfield Exploration Company | Moro Creek #2402HH | 8,000 | 12733881 |
| 708316 | Jan 27, 2011 | Jan 27, 2011 | Murphy Expl. & Prod. Co. - USA | Briggs #4HH | 7,616 | 12733862 |
| 708317 | Jan 26, 2011 | Jan 26, 2011 | Murphy Expl. & Prod. Co. - USA | Briggs #5HH | 7,636 | 12733863 |
| 708849 | Jan 24, 2011 | Jan 24, 2011 | Anadarko E&P Company LP | Beinhorn Ranch #10HH | 9,200 | 12733880 |
| 708846 | Jan 24, 2011 | Jan 24, 2011 | Anadarko E&P Company LP | Beinhorn Ranch #9HH | 9,200 | 12733879 |
| 708820 | Jan 24, 2011 | Jan 24, 2011 | Anadarko E&P Company LP | Diamond H State #4HH | 8,700 | 12733878 |
| 708818 | Jan 24, 2011 | Jan 24, 2011 | Newfield Exploration Company | Risinger #3201HH | 5,800 | 12733877 |
| 708736 | Jan 21, 2011 | Jan 21, 2011 | Anadarko E&P Company LP | Briscoe Carla Ranch #15HH | 8,200 | 12733874 |
| 708736Amendment | Jan 21, 2011 | Jan 21, 2011 | Anadarko E&P Company LP | Briscoe Carla Ranch #15HH | 7,254 | 12733874 |
| 708735 | Jan 21, 2011 | Jan 21, 2011 | Anadarko E&P Company LP | Briscoe Carla Ranch #14HH | 8,200 | 12733876 |
| 708735Amendment | Jan 21, 2011 | Jan 21, 2011 | Anadarko E&P Onshore LLC | Briscoe Carla Ranch #14HH | 7,270 | 12733876 |
| 708734 | Jan 21, 2011 | Jan 21, 2011 | Anadarko E&P Company LP | Briscoe Carla Ranch #13HH | 8,200 | 12733875 |
| 708734Amendment | Jan 21, 2011 | Jan 21, 2011 | Anadarko E&P Onshore LLC | Briscoe Carla Ranch #13HH | 7,258 | 12733875 |
| 708595 | Jan 21, 2011 | Jan 21, 2011 | Peregrine Petroleum, LLC | Jred Ranch B #1301HH | 5,800 | 12733873 |
| 708446 | Jan 20, 2011 | Jan 20, 2011 | Chesapeake Operating, Inc. | Faith-San Pedro #C 1HH | 9,000 | 12733869 |
| 708446Amendment | Jan 20, 2011 | Jan 20, 2011 | Chesapeake Operating, Inc. | Faith-San Pedro #C 1HH | 9,000 | 12733869 |
| 708501 | Jan 19, 2011 | Jan 19, 2011 | Anadarko E&P Company LP | Beinhorn Ranch #8HH | 9,200 | 12733872 |
| 708496 | Jan 18, 2011 | Jan 18, 2011 | Anadarko E&P Company LP | Beinhorn Ranch #7HH | 9,200 | 12733871 |
| 708456 | Jan 14, 2011 | Jan 14, 2011 | Chesapeake Operating, Inc. | Circle T Ranch Unit B #1HH | 14,000 | 12733870 |
| 708397 | Jan 14, 2011 | Jan 14, 2011 | Chesapeake Operating, Inc. | Faith-Bonita #A 1HH | 12,000 | 12733867 |
| 708397Amendment | Jan 14, 2011 | Jan 14, 2011 | Chesapeake Operating, Inc. | Faith-Bonita #A 1HH | 12,000 | 12733867 |
| 708397Amendment | Jan 14, 2011 | Jan 14, 2011 | Chesapeake Operating, Inc. | Faith-Bonita #A 1HH | 12,000 | 12733867 |
| 708396 | Jan 14, 2011 | Jan 14, 2011 | Anadarko E&P Company LP | Maund Ranch #1HH | 7,500 | 12733866 |
| 708389 | Jan 14, 2011 | Jan 14, 2011 | Anadarko E&P Company LP | South Spur Ranch #2HH | 7,800 | 12733865 |
| 708388 | Jan 14, 2011 | Jan 14, 2011 | Anadarko E&P Company LP | Rogers Dentonio Ranch #6HH | 8,000 | 12733864 |
| 708253 | Jan 13, 2011 | Jan 13, 2011 | Chesapeake Operating, Inc. | Faith-San Pedro #A 1HH | 12,000 | 12733861 |
| 708253Amendment | Jan 13, 2011 | Jan 13, 2011 | Chesapeake Operating, Inc. | Faith-San Pedro #A 1HH | 12,000 | 12733861 |
| 708253Amendment | Jan 13, 2011 | Jan 13, 2011 | Chesapeake Operating, Inc. | Faith-San Pedro #A 1HH | 12,000 | 12733861 |
| 708253Amendment | Jan 13, 2011 | Jan 13, 2011 | Chesapeake Operating, Inc. | Faith-San Pedro #A 1HH | 12,000 | 12733861 |
| 708134 | Jan 11, 2011 | Jan 11, 2011 | Chesapeake Operating, Inc. | Whitecotton Unit A #1HH | 9,000 | 12733860 |
| 708134Amendment | Jan 11, 2011 | Jan 11, 2011 | Chesapeake Operating, Inc. | Whitecotton Unit A #1HH | 9,000 | 12733860 |
| 708006 | Jan 10, 2011 | Jan 10, 2011 | Anadarko E&P Company LP | Briscoe Cochina West Ranch #12HH | 8,700 | 12733859 |
| 708006Amendment | Jan 10, 2011 | Jan 10, 2011 | Anadarko E&P Onshore LLC | Briscoe Cochina West Ranch #12HH | 8,700 | 12733859 |
| 707925 | Jan 6, 2011 | Jan 6, 2011 | Catarina Salt Water Disposal,llc | Catarina SWD #2 | 4,600 | 12733858 |
| 707912 | Jan 6, 2011 | Jan 6, 2011 | Anadarko E&P Company LP | Briscoe Carla Ranch #9HH | 8,200 | 12733857 |
| 707910 | Jan 6, 2011 | Jan 6, 2011 | Anadarko E&P Company LP | Briscoe Carla Ranch #8HH | 8,200 | 12733856 |
| 707905 | Jan 6, 2011 | Jan 6, 2011 | Anadarko E&P Company LP | Briscoe Carla Ranch #7HH | 8,200 | 12733855 |
| 707868 | Jan 5, 2011 | Jan 5, 2011 | Anadarko E&P Company LP | Briscoe Chip East Ranch #6HH | 9,000 | 12733854 |
| 707867 | Jan 5, 2011 | Jan 5, 2011 | Anadarko E&P Company LP | Briscoe Chip East Ranch #5HH | 9,000 | 12733853 |
| 707864 | Jan 5, 2011 | Jan 5, 2011 | Anadarko E&P Company LP | Briscoe Chip East Ranch #4HH | 9,000 | 12733852 |
| 707670 | Dec 30, 2010 | Dec 30, 2010 | Chesapeake Operating, Inc. | Pena Creek III Unit C #3HH | 9,000 | 12733851 |
| 707670Amendment | Dec 30, 2010 | Dec 30, 2010 | Chesapeake Operating, Inc. | Pena Creek III Unit C #3HH | 9,000 | 12733851 |
| 707569 | Dec 30, 2010 | Dec 30, 2010 | Murphy Expl. & Prod. Co. - USA | Briggs #6HH | 7,743 | 12733850 |
| 707535 | Dec 29, 2010 | Dec 29, 2010 | Newfield Exploration Company | Moro Creek #2401HH | 8,000 | 12733849 |
| 707465 | Dec 27, 2010 | Dec 27, 2010 | Chesapeake Operating, Inc. | Blakeway Unit A #1HH | 12,000 | 12733848 |
| 707465Amendment | Dec 27, 2010 | Dec 27, 2010 | Chesapeake Operating, Inc. | Blakeway Unit A #1HH | 12,000 | 12733848 |
| 707465Amendment | Dec 27, 2010 | Dec 27, 2010 | Chesapeake Operating, Inc. | Blakeway Unit A #1HH | 12,000 | 12733848 |
| 707387 | Dec 22, 2010 | Dec 22, 2010 | Anadarko E&P Company LP | Rogers Dentonio Ranch #5HH | 8,000 | 12733847 |
| 707385 | Dec 22, 2010 | Dec 22, 2010 | Anadarko E&P Company LP | Rogers Dentonio Ranch #4HH | 8,000 | 12733846 |
| 707384 | Dec 22, 2010 | Dec 22, 2010 | Anadarko E&P Company LP | Rogers Dentonio Ranch #3HH | 8,000 | 12733845 |
| 706890 | Dec 21, 2010 | Dec 21, 2010 | Shell Western E&P | Piloncillo #A 4HH | 10,000 | 12733844 |
| 706890Amendment | Dec 21, 2010 | Dec 21, 2010 | Shell Western E&P | Piloncillo #A 4HH | 15,000 | 12733844 |
| 706888 | Dec 21, 2010 | Dec 21, 2010 | Shell Western E&P | Piloncillo #A 3HH | 10,500 | 12733843 |
| 706888Amendment | Dec 21, 2010 | Dec 21, 2010 | Shell Western E&P | Piloncillo #A 3HH | 15,000 | 12733843 |
| 706887 | Dec 21, 2010 | Dec 21, 2010 | Shell Western E&P | Piloncillo #B 1HH | 10,900 | 12733842 |
| 706887Amendment | Dec 21, 2010 | Dec 21, 2010 | Shell Western E&P | Piloncillo #B 1HH | 15,335 | 12733842 |
| 706886 | Dec 21, 2010 | Dec 21, 2010 | Shell Western E&P | Piloncillo #C 1HH | 10,900 | 12733841 |
| 706886Amendment | Dec 21, 2010 | Dec 21, 2010 | Shell Western E&P | Piloncillo #C 1HH | 15,000 | 12733841 |
| 706886Amendment | Dec 21, 2010 | Dec 21, 2010 | Shell Western E&P | Piloncillo #C 1HH | 15,000 | 12733841 |
| 706979 | Dec 16, 2010 | Dec 16, 2010 | Catarina Salt Water Disposal,llc | Catarina SWD #1 | 4,600 | 12733840 |
| 706979Amendment | Dec 16, 2010 | Dec 16, 2010 | Catarina Salt Water Disposal,llc | Catarina SWD #1 | 4,600 | 12733840 |
| 706951 | Dec 16, 2010 | Dec 16, 2010 | Anadarko E&P Company LP | Briscoe Cochina East Ranch #13HH | 9,100 | 12733839 |
| 706951Amendment | Dec 16, 2010 | Dec 16, 2010 | Anadarko E&P Company LP | Briscoe Cochina East Ranch #13HH | 9,100 | 12733839 |
| 706945 | Dec 16, 2010 | Dec 16, 2010 | Anadarko E&P Company LP | Briscoe Cochina East Ranch #12HH | 9,100 | 12733838 |
| 706945Amendment | Dec 16, 2010 | Dec 16, 2010 | Anadarko E&P Company LP | Briscoe Cochina East Ranch #12HH | 9,100 | 12733838 |
| 706938 | Dec 16, 2010 | Dec 16, 2010 | Anadarko E&P Company LP | Briscoe Cochina East Ranch #11HH | 9,100 | 12733837 |
| 706938Amendment | Dec 16, 2010 | Dec 16, 2010 | Anadarko E&P Company LP | Briscoe Cochina East Ranch #11HH | 9,100 | 12733837 |
| 706901 | Dec 16, 2010 | Dec 16, 2010 | Chesapeake Operating, Inc. | Galm #1H | 9,000 | 12733836 |
| 706640 | Dec 13, 2010 | Dec 13, 2010 | Anadarko E&P Company LP | Rancho Encantado #5HH | 9,500 | 12733835 |
| 706636 | Dec 13, 2010 | Dec 13, 2010 | Anadarko E&P Company LP | Rancho Encantado #4HH | 9,500 | 12733834 |