| 761559 | Apr 30, 2013 | Apr 30, 2013 | Anadarko E&P Onshore LLC | Maund Ranch 23 Unit #9HH | 7,600 | 12735495 |
| 761557 | Apr 30, 2013 | Apr 30, 2013 | Anadarko E&P Onshore LLC | Maund Ranch 23 Unit #8HH | 7,600 | 12735493 |
| 761546 | Apr 30, 2013 | Apr 30, 2013 | Anadarko E&P Onshore LLC | Maund Ranch 23 Unit #7HH | 7,600 | 12735494 |
| 748623 | Apr 29, 2013 | Apr 29, 2013 | Chesapeake Operating, Inc. | Faith San Pedro V Unit #M 1HH | 9,000 | 12735104 |
| 748623Amendment | Apr 29, 2013 | Apr 29, 2013 | Chesapeake Operating, Inc. | Faith San Pedro V Unit #M 1HH | 9,000 | 12735104 |
| 748623Amendment | Apr 29, 2013 | Apr 29, 2013 | Chesapeake Operating, L.L.C. | Faith San Pedro V Unit #M 1HH | 9,000 | 12735104 |
| 748857 | Apr 26, 2013 | Apr 26, 2013 | Chesapeake Operating, Inc. | Faith San Pedro W Unit #M 1HH | 9,000 | 12735110 |
| 748857Amendment | Apr 26, 2013 | Apr 26, 2013 | Chesapeake Operating, Inc. | Faith San Pedro W Unit #M 1HH | 9,000 | 12735110 |
| 748857Amendment | Apr 26, 2013 | Apr 26, 2013 | Chesapeake Operating, L.L.C. | Faith San Pedro W Unit #M 1HH | 9,000 | 12735110 |
| 748824 | Apr 26, 2013 | Apr 26, 2013 | Chesapeake Operating, Inc. | Faith San Pedro Z Unit #M 1HH | 9,000 | 12735107 |
| 748824Amendment | Apr 26, 2013 | Apr 26, 2013 | Chesapeake Operating, Inc. | Faith San Pedro Z Unit #M 1HH | 9,000 | 12735107 |
| 748824Amendment | Apr 26, 2013 | Apr 26, 2013 | Chesapeake Operating, Inc. | Faith San Pedro Z Unit #M 1HH | 9,000 | 12735107 |
| 748824Amendment | Apr 26, 2013 | Apr 26, 2013 | Chesapeake Operating, L.L.C. | Faith San Pedro Z Unit #M 1HH | 9,000 | 12735107 |
| 748822 | Apr 26, 2013 | Apr 26, 2013 | Chesapeake Operating, Inc. | Faith San Pedro U Unit #M 1HH | 9,000 | 12735115 |
| 748822Amendment | Apr 26, 2013 | Apr 26, 2013 | Chesapeake Operating, Inc. | Faith San Pedro U Unit #M 1HH | 9,000 | 12735115 |
| 748822Amendment | Apr 26, 2013 | Apr 26, 2013 | Chesapeake Operating, L.L.C. | Faith San Pedro U Unit #M 1HH | 9,000 | 12735115 |
| 748820 | Apr 26, 2013 | Apr 26, 2013 | Chesapeake Operating, Inc. | Faith San Pedro S Unit #M 1HH | 9,000 | 12735106 |
| 748820Amendment | Apr 26, 2013 | Apr 26, 2013 | Chesapeake Operating, Inc. | Faith San Pedro S Unit #M 1HH | 9,000 | 12735106 |
| 748820Amendment | Apr 26, 2013 | Apr 26, 2013 | Chesapeake Operating, L.L.C. | Faith San Pedro S Unit #M 1HH | 9,000 | 12735106 |
| 761262 | Apr 25, 2013 | Apr 25, 2013 | Chesapeake Operating, Inc. | Sugarland Dim #G 1HH | 9,000 | 12735487 |
| 761165 | Apr 25, 2013 | Apr 25, 2013 | Rosetta Resources Operating LP | Briscoe Ranch EF #31H | 8,000 | 12735491 |
| 761164 | Apr 25, 2013 | Apr 25, 2013 | Rosetta Resources Operating LP | Briscoe Ranch EF #30H | 8,000 | 12735490 |
| 761163 | Apr 25, 2013 | Apr 25, 2013 | Rosetta Resources Operating LP | Briscoe Ranch EF #29H | 8,000 | 12735489 |
| 761161 | Apr 25, 2013 | Apr 25, 2013 | Rosetta Resources Operating LP | Briscoe Ranch EF #28H | 8,000 | 12735488 |
| 761161Amendment | Apr 25, 2013 | Apr 25, 2013 | Rosetta Resources Operating LP | Briscoe Ranch EF #28H | 8,010 | 12735488 |
| 761159 | Apr 25, 2013 | Apr 25, 2013 | Rosetta Resources Operating LP | Briscoe Ranch EF #27H | 8,000 | 12735486 |
| 761156 | Apr 25, 2013 | Apr 25, 2013 | Rosetta Resources Operating LP | Briscoe Ranch EF #26H | 8,000 | 12735485 |
| 761127 | Apr 25, 2013 | Apr 25, 2013 | Rosetta Resources Operating LP | Briscoe Ranch EF #25H | 8,000 | 12735483 |
| 761123 | Apr 25, 2013 | Apr 25, 2013 | Rosetta Resources Operating LP | Briscoe Ranch EF #24H | 8,000 | 12735482 |
| 761054 | Apr 23, 2013 | Apr 23, 2013 | Anadarko E&P Onshore LLC | Briscoe Catarina South #35HH | 8,550 | 12735484 |
| 761054Amendment | Apr 23, 2013 | Apr 23, 2013 | Anadarko E&P Onshore LLC | Briscoe Catarina South #35HH | 8,550 | 12735484 |
| 761027 | Apr 23, 2013 | Apr 23, 2013 | Anadarko E&P Onshore LLC | Briscoe Catarina South #34HH | 8,550 | 12735481 |
| 761027Amendment | Apr 23, 2013 | Apr 23, 2013 | Anadarko E&P Onshore LLC | Briscoe Catarina South #34HH | 8,550 | 12735481 |
| 760686 | Apr 22, 2013 | Apr 22, 2013 | Stonegate Production Company,llc | Hatch Unit A #2HH | 8,500 | 12735477 |
| 760613 | Apr 19, 2013 | Apr 19, 2013 | Blackbrush O & G, LLC | San Pedro Ranch #404HH | 4,100 | 12735470 |
| 760782 | Apr 18, 2013 | Apr 18, 2013 | Anadarko E&P Onshore LLC | South Spur Unit A #9HH | 7,300 | 12735480 |
| 760780 | Apr 18, 2013 | Apr 18, 2013 | Anadarko E&P Onshore LLC | South Spur Unit A #8HH | 7,300 | 12735479 |
| 760779 | Apr 18, 2013 | Apr 18, 2013 | Anadarko E&P Onshore LLC | South Spur Unit A #7HH | 7,300 | 12735478 |
| 760656 | Apr 17, 2013 | Apr 17, 2013 | Anadarko E&P Onshore LLC | Briscoe Catarina Ranch #107HH | 9,000 | 12735476 |
| 760652 | Apr 17, 2013 | Apr 17, 2013 | Anadarko E&P Onshore LLC | Briscoe Catarina Ranch #106HH | 9,000 | 12735475 |
| 760649 | Apr 17, 2013 | Apr 17, 2013 | Anadarko E&P Onshore LLC | Briscoe Catarina Ranch #105HH | 9,000 | 12735474 |
| 760645 | Apr 17, 2013 | Apr 17, 2013 | Anadarko E&P Onshore LLC | Briscoe Catarina Ranch #104HH | 9,000 | 12735473 |
| 760643 | Apr 17, 2013 | Apr 17, 2013 | Anadarko E&P Onshore LLC | Briscoe Catarina Ranch #103HH | 9,000 | 12735472 |
| 760639 | Apr 17, 2013 | Apr 17, 2013 | Anadarko E&P Onshore LLC | Briscoe Catarina Ranch #102HH | 9,000 | 12735471 |
| 760494 | Apr 17, 2013 | Apr 17, 2013 | Anadarko E&P Onshore LLC | Briscoe Catarina South #30HH | 8,550 | 12735460 |
| 760571 | Apr 16, 2013 | Apr 16, 2013 | SM Energy Company | Briscoe Catarina East #25HH | 10,000 | 12735468 |
| 760526 | Apr 15, 2013 | Apr 15, 2013 | EP Energy E&P Company, L.P. | Ritchie Farms #46HH | 9,600 | 12735464 |
| 760524 | Apr 15, 2013 | Apr 15, 2013 | EP Energy E&P Company, L.P. | Ritchie Farms #45HH | 9,600 | 12735466 |
| 760406 | Apr 15, 2013 | Apr 15, 2013 | Shell Western E&P | Piloncillo #A 24HZH | 20,000 | 12735469 |
| 760405 | Apr 15, 2013 | Apr 15, 2013 | Shell Western E&P | Piloncillo #A 24HYH | 20,000 | 12735467 |
| 760520 | Apr 12, 2013 | Apr 12, 2013 | EP Energy E&P Company, L.P. | Ritchie Farms #24HRH | 9,600 | 12735465 |
| 760500 | Apr 12, 2013 | Apr 12, 2013 | Anadarko E&P Onshore LLC | Briscoe Catarina South #33HH | 8,600 | 12735462 |
| 760499 | Apr 12, 2013 | Apr 12, 2013 | Anadarko E&P Onshore LLC | Briscoe Catarina South #32HH | 8,600 | 12735463 |
| 760497 | Apr 12, 2013 | Apr 12, 2013 | Anadarko E&P Onshore LLC | Briscoe Catarina South #31HH | 8,600 | 12735461 |
| 760481 | Apr 12, 2013 | Apr 12, 2013 | Anadarko E&P Onshore LLC | Briscoe Catarina South #28HH | 8,600 | 12735459 |
| 760481Amendment | Apr 12, 2013 | Apr 12, 2013 | Anadarko E&P Onshore LLC | Briscoe Catarina South #28HH | 8,600 | 12735459 |
| 760399 | Apr 12, 2013 | Apr 12, 2013 | Choya Operating, LLC | H. E. Stumberg, Jr. #1 | 10,500 | 12732672 |
| 760343 | Apr 12, 2013 | Apr 12, 2013 | Blackbrush O & G, LLC | San Pedro Ranch #504HH | 4,200 | 12735458 |
| 760100 | Apr 12, 2013 | Apr 12, 2013 | Chesapeake Operating, Inc. | Smith Family Unit a Dim #2HH | 9,000 | 12735457 |
| 760100Amendment | Apr 12, 2013 | Apr 12, 2013 | Chesapeake Operating, Inc. | Smith Family Unit a Dim #2HH | 9,000 | 12735457 |
| 760100Amendment | Apr 12, 2013 | Apr 12, 2013 | Chesapeake Operating, Inc. | Smith Family Unit a Dim #2HH | 9,000 | 12735457 |
| 759107 | Apr 10, 2013 | Apr 10, 2013 | Anadarko E&P Onshore LLC | Briscoe Catarina Ranch #101HH | 9,000 | 12735431 |
| 759094 | Apr 10, 2013 | Apr 10, 2013 | Anadarko E&P Onshore LLC | Briscoe Catarina Ranch #100HH | 9,000 | 12735430 |
| 759080 | Apr 10, 2013 | Apr 10, 2013 | Anadarko E&P Onshore LLC | Briscoe Catarina Ranch #99HH | 9,000 | 12735429 |
| 759076 | Apr 10, 2013 | Apr 10, 2013 | Anadarko E&P Onshore LLC | Briscoe Catarina Ranch #98HH | 9,000 | 12735428 |
| 759072 | Apr 10, 2013 | Apr 10, 2013 | Anadarko E&P Onshore LLC | Briscoe Catarina Ranch #97HH | 9,000 | 12735426 |
| 759067 | Apr 10, 2013 | Apr 10, 2013 | Anadarko E&P Onshore LLC | Briscoe Catarina Ranch #96HH | 9,000 | 12735427 |
| 759064 | Apr 10, 2013 | Apr 10, 2013 | Anadarko E&P Onshore LLC | Briscoe Catarina Ranch #95HH | 9,000 | 12735425 |
| 758579 | Apr 10, 2013 | Apr 10, 2013 | Anadarko E&P Onshore LLC | Rogers Dentonio 16 Unit #9HH | 7,500 | 12735415 |
| 758577 | Apr 10, 2013 | Apr 10, 2013 | Anadarko E&P Onshore LLC | Rogers Dentonio 16 Unit #8HH | 7,500 | 12735414 |
| 758573 | Apr 9, 2013 | Apr 9, 2013 | Anadarko E&P Onshore LLC | Rogers Dentonio 16 Unit #7HH | 7,500 | 12735413 |
| 758566 | Apr 9, 2013 | Apr 9, 2013 | Anadarko E&P Onshore LLC | Rogers Dentonio 16 Unit #6HH | 7,500 | 12735417 |
| 758562 | Apr 9, 2013 | Apr 9, 2013 | Anadarko E&P Onshore LLC | Rogers Dentonio 16 Unit #5HH | 7,500 | 12735416 |
| 759994 | Apr 5, 2013 | Apr 5, 2013 | Hughes, Dan A. Company, L.P. | Baty-Heitz Unit #1HH | 12,500 | 12735456 |
| 759978 | Apr 5, 2013 | Apr 5, 2013 | Chesapeake Operating, Inc. | Arz Unit G Dim #4HH | 9,000 | 12735455 |
| 759980 | Apr 4, 2013 | Apr 4, 2013 | Stonegate Production Company,llc | Hatch Unit B #2HH | 8,500 | 12735454 |
| 759980Amendment | Apr 4, 2013 | Apr 4, 2013 | Stonegate Production Company,llc | Hatch Unit B #2HH | 8,500 | 12735454 |
| 759912 | Apr 4, 2013 | Apr 4, 2013 | Gambit Resources, Inc. | Eardley #1HH | 7,000 | 12735453 |
| 759890 | Apr 4, 2013 | Apr 4, 2013 | Chesapeake Operating, Inc. | Smith Family Unit a Dim #1HH | 9,000 | 12735452 |
| 759890Amendment | Apr 4, 2013 | Apr 4, 2013 | Chesapeake Operating, Inc. | Smith Family Unit a Dim #1HH | 9,000 | 12735452 |
| 759890Amendment | Apr 4, 2013 | Apr 4, 2013 | Chesapeake Operating, Inc. | Smith Family Unit a Dim #1HH | 9,000 | 12735452 |
| 759890Amendment | Apr 4, 2013 | Apr 4, 2013 | Chesapeake Operating, Inc. | Smith Family Unit a Dim #1HH | 9,000 | 12735452 |
| 759727 | Apr 2, 2013 | Apr 2, 2013 | Stonegate Production Company,llc | La Corona Ranch #A 1HH | 9,000 | 12735451 |
| 759570 | Apr 1, 2013 | Apr 1, 2013 | Murphy Expl. & Prod. Co. - USA | Briggs Unit C #1HH | 8,570 | 12735449 |
| 759529 | Mar 29, 2013 | Mar 29, 2013 | Shell Western E&P | Piloncillo #A 23HZH | 20,000 | 12735448 |
| 759529Amendment | Mar 29, 2013 | Mar 29, 2013 | Shell Western E&P | Piloncillo #A 23HZH | 20,000 | 12735448 |
| 759528 | Mar 29, 2013 | Mar 29, 2013 | Murphy Expl. & Prod. Co. - USA | Briggs #22HH | 8,745 | 12735446 |
| 759527 | Mar 29, 2013 | Mar 29, 2013 | Shell Western E&P | Piloncillo #A 23HYH | 20,000 | 12735447 |
| 759527Amendment | Mar 29, 2013 | Mar 29, 2013 | Shell Western E&P | Piloncillo #A 23HYH | 20,000 | 12735447 |
| 759522 | Mar 29, 2013 | Mar 29, 2013 | Murphy Expl. & Prod. Co. - USA | Briggs #21HH | 8,555 | 12735445 |
| 759519 | Mar 29, 2013 | Mar 29, 2013 | Murphy Expl. & Prod. Co. - USA | Briggs #20HH | 8,555 | 12735444 |
| 759191 | Mar 26, 2013 | Mar 26, 2013 | Sable Environmental, LLC | Engler SWD #1 | 9,500 | 12735442 |
| 759191Amendment | Mar 26, 2013 | Mar 26, 2013 | Sable Environmental, LLC | Engler SWD #1 | 9,500 | 12735442 |
| 759231 | Mar 25, 2013 | Mar 25, 2013 | Sage Energy Company | Ten F Partners #1 | 3,902 | 12733622 |
| 759213 | Mar 22, 2013 | Mar 22, 2013 | Anadarko E&P Onshore LLC | Fogmt #27SPH | 7,000 | 12735440 |
| 759211 | Mar 22, 2013 | Mar 22, 2013 | Anadarko E&P Onshore LLC | Fogmt #26SPH | 7,000 | 12735439 |
| 759209 | Mar 22, 2013 | Mar 22, 2013 | Anadarko E&P Onshore LLC | Fogmt #25SPH | 7,000 | 12735441 |
| 759203 | Mar 22, 2013 | Mar 22, 2013 | Anadarko E&P Onshore LLC | Fogmt #24SPH | 7,000 | 12735438 |
| 759176 | Mar 21, 2013 | Mar 21, 2013 | Anadarko E&P Onshore LLC | Maund Ranch 23 Unit #6HH | 7,700 | 12735434 |
| 759174 | Mar 21, 2013 | Mar 21, 2013 | Anadarko E&P Onshore LLC | Maund Ranch 23 Unit #5HH | 7,700 | 12735436 |