| 726047Amendment | Oct 13, 2011 | Oct 13, 2011 | Anadarko E&P Onshore LLC | Briscoe Catarina West #27HH | 7,896 | 12734338 |
| 726039 | Oct 13, 2011 | Oct 13, 2011 | Anadarko E&P Company LP | Briscoe Catarina West #26HH | 8,800 | 12734337 |
| 726039Amendment | Oct 13, 2011 | Oct 13, 2011 | Anadarko E&P Onshore LLC | Briscoe Catarina West #26HH | 8,800 | 12734337 |
| 726038 | Oct 13, 2011 | Oct 13, 2011 | Anadarko E&P Company LP | Briscoe Catarina West #25HH | 8,800 | 12734336 |
| 726038Amendment | Oct 13, 2011 | Oct 13, 2011 | Anadarko E&P Onshore LLC | Briscoe Catarina West #25HH | 8,800 | 12734336 |
| 726024 | Oct 13, 2011 | Oct 13, 2011 | Anadarko E&P Company LP | Briscoe Catarina West #24HH | 8,800 | 12734335 |
| 726024Amendment | Oct 13, 2011 | Oct 13, 2011 | Anadarko E&P Onshore LLC | Briscoe Catarina West #24HH | 8,800 | 12734335 |
| 725874 | Oct 10, 2011 | Oct 10, 2011 | Chesapeake Operating, Inc. | Martinez #E 1HH | 9,000 | 12734334 |
| 725567 | Oct 5, 2011 | Oct 5, 2011 | Chesapeake Operating, Inc. | Arz Unit G Dim #3HH | 9,000 | 12734332 |
| 725510 | Oct 5, 2011 | Oct 5, 2011 | Chesapeake Operating, Inc. | Faith-Bonita I Unit #K 1HH | 9,000 | 12734333 |
| 725510Amendment | Oct 5, 2011 | Oct 5, 2011 | Chesapeake Operating, Inc. | Faith-Bonita I Unit #K 1HH | 9,000 | 12734333 |
| 725510Amendment | Oct 5, 2011 | Oct 5, 2011 | Chesapeake Operating, Inc. | Faith-Bonita I Unit #K 1HH | 9,000 | 12734333 |
| 725510Amendment | Oct 5, 2011 | Oct 5, 2011 | Chesapeake Operating, Inc. | Faith-Bonita I Unit #K 1HH | 9,000 | 12734333 |
| 723691 | Oct 5, 2011 | Oct 5, 2011 | CML Exploration, LLC | Caza #1H | 7,000 | 12734287 |
| 723691Amendment | Oct 5, 2011 | Oct 5, 2011 | CML Exploration, LLC | Caza #1H | 7,000 | 12734287 |
| 723691Amendment | Oct 5, 2011 | Oct 5, 2011 | CML Exploration, LLC | Caza #1H | 7,000 | 12734287 |
| 725469 | Oct 4, 2011 | Oct 4, 2011 | Anadarko E&P Company LP | Rancho Encantado #28HH | 9,200 | 12734331 |
| 725410 | Oct 4, 2011 | Oct 4, 2011 | Anadarko E&P Company LP | Beinhorn Ranch #22HH | 8,950 | 12734329 |
| 725410Amendment | Oct 4, 2011 | Oct 4, 2011 | Anadarko E&P Onshore LLC | Beinhorn Ranch #22HH | 8,950 | 12734329 |
| 725408 | Oct 4, 2011 | Oct 4, 2011 | Anadarko E&P Company LP | Beinhorn Ranch #20HH | 8,950 | 12734328 |
| 725408Amendment | Oct 4, 2011 | Oct 4, 2011 | Anadarko E&P Onshore LLC | Beinhorn Ranch #20HH | 8,950 | 12734328 |
| 725404 | Oct 4, 2011 | Oct 4, 2011 | Anadarko E&P Company LP | Beinhorn Ranch #19HH | 8,950 | 12734330 |
| 725404Amendment | Oct 4, 2011 | Oct 4, 2011 | Anadarko E&P Onshore LLC | Beinhorn Ranch #19HH | 8,950 | 12734330 |
| 725359 | Oct 3, 2011 | Oct 3, 2011 | Chesapeake Operating, Inc. | Faith Bonita L Unit #I 1HH | 9,000 | 12734327 |
| 725303 | Oct 3, 2011 | Oct 3, 2011 | Chesapeake Operating, Inc. | Faith-Bonita F Unit #I 1HH | 9,000 | 12734326 |
| 725154 | Sep 29, 2011 | Sep 29, 2011 | Chesapeake Operating, Inc. | Lazy a Cotulla #L 3HH | 9,000 | 12734325 |
| 725099 | Sep 29, 2011 | Sep 29, 2011 | Chesapeake Operating, Inc. | Lazy a Cotulla #K 3HH | 9,000 | 12734324 |
| 725074 | Sep 29, 2011 | Sep 29, 2011 | Chesapeake Operating, Inc. | Faith Sandy Dim #F 2HH | 9,000 | 12734323 |
| 725015 | Sep 28, 2011 | Sep 28, 2011 | Chesapeake Operating, Inc. | Faith Bonita E Unit #J 1HH | 9,000 | 12734322 |
| 724959 | Sep 27, 2011 | Sep 27, 2011 | Anadarko E&P Company LP | Briscoe Catarina Ranch #27HH | 8,920 | 12734320 |
| 724959Amendment | Sep 27, 2011 | Sep 27, 2011 | Anadarko E&P Onshore LLC | Briscoe Catarina Ranch #27HH | 8,019 | 12734320 |
| 724957 | Sep 27, 2011 | Sep 27, 2011 | Anadarko E&P Company LP | Briscoe Catarina Ranch #26HH | 8,920 | 12734319 |
| 724957Amendment | Sep 27, 2011 | Sep 27, 2011 | Anadarko E&P Onshore LLC | Briscoe Catarina Ranch #26HH | 7,979 | 12734319 |
| 724955 | Sep 27, 2011 | Sep 27, 2011 | Anadarko E&P Company LP | Briscoe Catarina Ranch #25HH | 8,920 | 12734318 |
| 724955Amendment | Sep 27, 2011 | Sep 27, 2011 | Anadarko E&P Company LP | Briscoe Catarina Ranch #25HH | 8,920 | 12734318 |
| 724955Amendment | Sep 27, 2011 | Sep 27, 2011 | Anadarko E&P Onshore LLC | Briscoe Catarina Ranch #25HH | 7,992 | 12734318 |
| 724947 | Sep 27, 2011 | Sep 27, 2011 | Chesapeake Operating, Inc. | Faith Sandy Dim #F 1HH | 9,000 | 12734321 |
| 724947Amendment | Sep 27, 2011 | Sep 27, 2011 | Chesapeake Operating, L.L.C. | Faith Sandy Dim #F 1HH | 9,000 | 12734321 |
| 724946 | Sep 27, 2011 | Sep 27, 2011 | Anadarko E&P Company LP | Briscoe Catarina Ranch #24HH | 8,920 | 12734317 |
| 724946Amendment | Sep 27, 2011 | Sep 27, 2011 | Anadarko E&P Onshore LLC | Briscoe Catarina Ranch #24HH | 8,012 | 12734317 |
| 724945 | Sep 27, 2011 | Sep 27, 2011 | Anadarko E&P Company LP | Briscoe Catarina Ranch #23HH | 8,920 | 12734316 |
| 724945Amendment | Sep 27, 2011 | Sep 27, 2011 | Anadarko E&P Onshore LLC | Briscoe Catarina Ranch #23HH | 8,002 | 12734316 |
| 724943 | Sep 27, 2011 | Sep 27, 2011 | Anadarko E&P Company LP | Briscoe Catarina Ranch #22HH | 8,920 | 12734315 |
| 724943Amendment | Sep 27, 2011 | Sep 27, 2011 | Anadarko E&P Company LP | Briscoe Catarina Ranch #22HH | 8,000 | 12734315 |
| 724858 | Sep 26, 2011 | Sep 26, 2011 | Anadarko E&P Company LP | Diamond H Ranch #5HH | 8,000 | 12734314 |
| 724741 | Sep 26, 2011 | Sep 26, 2011 | Anadarko E&P Company LP | Briscoe Friday Ranch Unit B #17HH | 9,100 | 12734313 |
| 724741Amendment | Sep 26, 2011 | Sep 26, 2011 | Anadarko E&P Company LP | Briscoe Friday Ranch Unit B #17HH | 8,171 | 12734313 |
| 724741Amendment | Sep 26, 2011 | Sep 26, 2011 | Anadarko E&P Onshore LLC | Briscoe Friday Ranch Unit B #17HH | 8,171 | 12734313 |
| 724731 | Sep 26, 2011 | Sep 26, 2011 | Anadarko E&P Company LP | Briscoe Friday Ranch Unit B #15HH | 9,100 | 12734310 |
| 724731Amendment | Sep 26, 2011 | Sep 26, 2011 | Anadarko E&P Company LP | Briscoe Friday Ranch Unit B #15HH | 8,176 | 12734310 |
| 724731Amendment | Sep 26, 2011 | Sep 26, 2011 | Anadarko E&P Onshore LLC | Briscoe Friday Ranch Unit B #15HH | 8,176 | 12734310 |
| 722218 | Sep 26, 2011 | Sep 26, 2011 | Chesapeake Operating, Inc. | Holubar Dim #B 1HH | 9,000 | 12734255 |
| 722218Amendment | Sep 26, 2011 | Sep 26, 2011 | Chesapeake Operating, Inc. | Holubar Dim #B 1HH | 9,000 | 12734255 |
| 724757 | Sep 23, 2011 | Sep 23, 2011 | Anadarko E&P Company LP | Diamond H State #5HH | 8,000 | 12734312 |
| 724736 | Sep 23, 2011 | Sep 23, 2011 | Anadarko E&P Company LP | Briscoe Friday Ranch Unit B #16HH | 9,100 | 12734311 |
| 724736Amendment | Sep 23, 2011 | Sep 23, 2011 | Anadarko E&P Company LP | Briscoe Friday Ranch Unit B #16HH | 8,189 | 12734311 |
| 724736Amendment | Sep 23, 2011 | Sep 23, 2011 | Anadarko E&P Onshore LLC | Briscoe Friday Ranch Unit B #16HH | 8,189 | 12734311 |
| 724716 | Sep 23, 2011 | Sep 23, 2011 | Anadarko E&P Company LP | Briscoe Friday Ranch Unit B #14HH | 9,100 | 12734309 |
| 724716Amendment | Sep 23, 2011 | Sep 23, 2011 | Anadarko E&P Company LP | Briscoe Friday Ranch Unit B #14HH | 8,156 | 12734309 |
| 724716Amendment | Sep 23, 2011 | Sep 23, 2011 | Anadarko E&P Onshore LLC | Briscoe Friday Ranch Unit B #14HH | 8,156 | 12734309 |
| 721864 | Sep 22, 2011 | Sep 22, 2011 | Chesapeake Operating, Inc. | Faith-Yana #H 2HH | 9,000 | 12734242 |
| 721864Amendment | Sep 22, 2011 | Sep 22, 2011 | Chesapeake Operating, Inc. | Faith-Yana #H 2HH | 9,000 | 12734242 |
| 724395 | Sep 21, 2011 | Sep 21, 2011 | Chesapeake Operating, Inc. | Zientek North Unit Dim #1HH | 9,000 | 12734308 |
| 724258 | Sep 21, 2011 | Sep 21, 2011 | Shell Western E&P | Piloncillo #A 8HBH | 18,000 | 12734303 |
| 724334 | Sep 20, 2011 | Sep 20, 2011 | Chesapeake Operating, Inc. | NHL #2HH | 12,000 | 12734307 |
| 724260 | Sep 20, 2011 | Sep 20, 2011 | Shell Western E&P | Piloncillo #A 8HDH | 18,000 | 12734305 |
| 724249 | Sep 19, 2011 | Sep 19, 2011 | Chesapeake Operating, Inc. | Faith-San Pedro C Unit #F 1HH | 9,000 | 12734298 |
| 724249Amendment | Sep 19, 2011 | Sep 19, 2011 | Chesapeake Operating, Inc. | Faith-San Pedro C Unit #F 1HH | 9,000 | 12734298 |
| 724261 | Sep 16, 2011 | Sep 16, 2011 | Shell Western E&P | Piloncillo #A 8HLH | 18,000 | 12734306 |
| 724259 | Sep 16, 2011 | Sep 16, 2011 | Shell Western E&P | Piloncillo #A 8HCH | 18,000 | 12734304 |
| 724257 | Sep 16, 2011 | Sep 16, 2011 | Shell Western E&P | Piloncillo #A 8HAH | 18,000 | 12734301 |
| 724256 | Sep 16, 2011 | Sep 16, 2011 | Shell Western E&P | Piloncillo #A 7HDH | 18,000 | 12734302 |
| 724256Amendment | Sep 16, 2011 | Sep 16, 2011 | Shell Western E&P | Piloncillo #A 7HDH | 18,000 | 12734302 |
| 724255 | Sep 16, 2011 | Sep 16, 2011 | Shell Western E&P | Piloncillo #A 7HCH | 18,000 | 12734300 |
| 724254 | Sep 16, 2011 | Sep 16, 2011 | Shell Western E&P | Piloncillo #A 7HBH | 18,000 | 12734299 |
| 724253 | Sep 16, 2011 | Sep 16, 2011 | Shell Western E&P | Piloncillo #A 7HAH | 18,000 | 12734297 |
| 723765 | Sep 16, 2011 | Sep 16, 2011 | Chesapeake Operating, Inc. | Faith Bonita D Unit #J 1HH | 9,000 | 12734290 |
| 723765Amendment | Sep 16, 2011 | Sep 16, 2011 | Chesapeake Operating, Inc. | Faith Bonita D Unit #J 1HH | 9,000 | 12734290 |
| 724078 | Sep 15, 2011 | Sep 15, 2011 | Chesapeake Operating, Inc. | Faith-San Pedro #G 1HH | 12,000 | 12734296 |
| 724065 | Sep 14, 2011 | Sep 14, 2011 | Rosetta Resources Operating LP | Lasseter & Eppright #1H | 7,800 | 12734295 |
| 724065Amendment | Sep 14, 2011 | Sep 14, 2011 | Rosetta Resources Operating LP | Lasseter & Eppright #1H | 7,800 | 12734295 |
| 723865 | Sep 13, 2011 | Sep 13, 2011 | Chesapeake Operating, Inc. | Faith-San Pedro F Unit #B 1HH | 9,000 | 12734294 |
| 722598 | Sep 13, 2011 | Sep 13, 2011 | Texas International Oper., LLC | Ranger Beall Ranch #13HH | 8,200 | 12734285 |
| 722598Amendment | Sep 13, 2011 | Sep 13, 2011 | Texas International Oper., LLC | Ranger Beall Ranch #13HH | 8,200 | 12734285 |
| 722598Amendment | Sep 13, 2011 | Sep 13, 2011 | Texas International Oper., LLC | Ranger Beall Ranch #13HH | 8,200 | 12734285 |
| 722595 | Sep 13, 2011 | Sep 13, 2011 | Texas International Oper., LLC | Ranger Beall Ranch #12HH | 8,200 | 12734286 |
| 722595Amendment | Sep 13, 2011 | Sep 13, 2011 | Texas International Oper., LLC | Ranger Beall Ranch #12HH | 8,200 | 12734286 |
| 722595Amendment | Sep 13, 2011 | Sep 13, 2011 | Texas International Oper., LLC | Ranger Beall Ranch #12HH | 8,200 | 12734286 |
| 723910 | Sep 12, 2011 | Sep 12, 2011 | Newfield Exploration Company | Moro Creek #2601HH | 7,800 | 12734293 |
| 723824 | Sep 12, 2011 | Sep 12, 2011 | Chesapeake Operating, Inc. | Anderson-Stone Dim #I 1HH | 9,000 | 12734291 |
| 723866 | Sep 9, 2011 | Sep 9, 2011 | Chesapeake Operating, Inc. | Faith-San Pedro E Unit #B 1HH | 9,000 | 12734292 |
| 723748 | Sep 9, 2011 | Sep 9, 2011 | Chesapeake Operating, Inc. | Faith Bonita J Unit #K 1HH | 9,000 | 12734289 |
| 723748Amendment | Sep 9, 2011 | Sep 9, 2011 | Chesapeake Operating, Inc. | Faith Bonita J Unit #K 1HH | 9,000 | 12734289 |
| 723748Amendment | Sep 9, 2011 | Sep 9, 2011 | Chesapeake Operating, Inc. | Faith Bonita J Unit #K 1HH | 9,000 | 12734289 |
| 723748Amendment | Sep 9, 2011 | Sep 9, 2011 | Chesapeake Operating, Inc. | Faith Bonita J Unit #K 1HH | 9,000 | 12734289 |
| 723746 | Sep 9, 2011 | Sep 9, 2011 | Chesapeake Operating, Inc. | Faith Bonita B Unit #K 1HH | 9,000 | 12734288 |
| 723746Amendment | Sep 9, 2011 | Sep 9, 2011 | Chesapeake Operating, Inc. | Faith Bonita B Unit #K 1HH | 9,000 | 12734288 |
| 723746Amendment | Sep 9, 2011 | Sep 9, 2011 | Chesapeake Operating, Inc. | Faith Bonita B Unit #K 1HH | 9,000 | 12734288 |
| 723596 | Sep 7, 2011 | Sep 7, 2011 | Chesapeake Operating, Inc. | Walk a Jam Unit Dim #A 3HH | 9,000 | 12734283 |
| 722594 | Sep 7, 2011 | Sep 7, 2011 | Texas International Oper., LLC | Ranger Beall Ranch #11HH | 8,200 | 12734284 |