| 759173 | Mar 21, 2013 | Mar 21, 2013 | Anadarko E&P Onshore LLC | Maund Ranch 23 Unit #4HH | 7,700 | 12735437 |
| 759151 | Mar 21, 2013 | Mar 21, 2013 | Anadarko E&P Onshore LLC | Maund Ranch 23 Unit #3HH | 7,700 | 12735435 |
| 759132 | Mar 21, 2013 | Mar 21, 2013 | Anadarko E&P Onshore LLC | Maund Ranch 23 Unit #2HH | 7,700 | 12735433 |
| 759128 | Mar 21, 2013 | Mar 21, 2013 | Anadarko E&P Onshore LLC | Maund Ranch 23 Unit #1HH | 7,700 | 12735432 |
| 758953 | Mar 20, 2013 | Mar 20, 2013 | Chesapeake Operating, Inc. | Ivey Ranch #B 5HH | 9,000 | 12735424 |
| 758953Amendment | Mar 20, 2013 | Mar 20, 2013 | Chesapeake Operating, L.L.C. | Ivey Ranch #B 5HH | 9,000 | 12735424 |
| 758946 | Mar 20, 2013 | Mar 20, 2013 | Chesapeake Operating, Inc. | Ivey Ranch #B 1HH | 9,000 | 12735423 |
| 758946Amendment | Mar 20, 2013 | Mar 20, 2013 | Chesapeake Operating, L.L.C. | Ivey Ranch #B 1HH | 9,000 | 12735423 |
| 758831 | Mar 19, 2013 | Mar 19, 2013 | Murphy Expl. & Prod. Co. - USA | Kone #21HH | 7,600 | 12735422 |
| 758223 | Mar 19, 2013 | Mar 19, 2013 | Anadarko E&P Onshore LLC | Diamond H State #14HH | 8,700 | 12735399 |
| 758791 | Mar 18, 2013 | Mar 18, 2013 | Texas American Resources Company | Alvin Blalack 77 #9HH | 7,000 | 12735421 |
| 758365 | Mar 18, 2013 | Mar 18, 2013 | Anadarko E&P Onshore LLC | Briscoe Thon Unit #5HH | 9,000 | 12735409 |
| 758602 | Mar 15, 2013 | Mar 15, 2013 | Murphy Expl. & Prod. Co. - USA | Kone #22HH | 7,600 | 12735418 |
| 758561 | Mar 15, 2013 | Mar 15, 2013 | Anadarko E&P Onshore LLC | Rogers Dentonio 16 Unit #4HH | 7,500 | 12735412 |
| 758537 | Mar 15, 2013 | Mar 15, 2013 | Murphy Expl. & Prod. Co. - USA | Kone #24HH | 7,600 | 12735411 |
| 758525 | Mar 15, 2013 | Mar 15, 2013 | Murphy Expl. & Prod. Co. - USA | Kone #23HH | 7,600 | 12735410 |
| 758425 | Mar 15, 2013 | Mar 15, 2013 | Anadarko E&P Onshore LLC | Fogmt #17SPH | 7,000 | 12735420 |
| 758424 | Mar 15, 2013 | Mar 15, 2013 | Anadarko E&P Onshore LLC | Fogmt #16SPH | 7,000 | 12735419 |
| 758355 | Mar 14, 2013 | Mar 14, 2013 | Anadarko E&P Onshore LLC | Briscoe Thon Unit #4HH | 9,000 | 12735406 |
| 758343 | Mar 13, 2013 | Mar 13, 2013 | Anadarko E&P Onshore LLC | Briscoe Thon Unit #3HH | 9,000 | 12735408 |
| 758340 | Mar 13, 2013 | Mar 13, 2013 | Anadarko E&P Onshore LLC | Briscoe Thon Unit #2HH | 9,000 | 12735407 |
| 758336 | Mar 13, 2013 | Mar 13, 2013 | Anadarko E&P Onshore LLC | Briscoe Thon Unit #1HH | 9,000 | 12735405 |
| 758308 | Mar 13, 2013 | Mar 13, 2013 | EP Energy E&P Company, L.P. | Ritchie Farms #44HH | 9,600 | 12735404 |
| 758308Amendment | Mar 13, 2013 | Mar 13, 2013 | EP Energy E&P Company, L.P. | Ritchie Farms #44HH | 9,600 | 12735404 |
| 758307 | Mar 13, 2013 | Mar 13, 2013 | EP Energy E&P Company, L.P. | Ritchie Farms #43HH | 9,600 | 12735402 |
| 758307Amendment | Mar 13, 2013 | Mar 13, 2013 | EP Energy E&P Company, L.P. | Ritchie Farms #43HH | 9,600 | 12735402 |
| 758307Amendment | Mar 13, 2013 | Mar 13, 2013 | EP Energy E&P Company, L.P. | Ritchie Farms C Unit #43HH | 9,600 | 12735402 |
| 758305 | Mar 13, 2013 | Mar 13, 2013 | EP Energy E&P Company, L.P. | Ritchie Farms #42HH | 9,600 | 12735401 |
| 758305Amendment | Mar 13, 2013 | Mar 13, 2013 | EP Energy E&P Company, L.P. | Ritchie Farms #42HH | 9,600 | 12735401 |
| 758282 | Mar 12, 2013 | Mar 12, 2013 | Chesapeake Operating, Inc. | Henrichson Unit C Dim #1HH | 9,000 | 12735400 |
| 758225 | Mar 12, 2013 | Mar 12, 2013 | Anadarko E&P Onshore LLC | Diamond H Ranch #13HH | 8,660 | 12735403 |
| 758225Amendment | Mar 12, 2013 | Mar 12, 2013 | Anadarko E&P Onshore LLC | Diamond H Ranch #13HH | 8,660 | 12735403 |
| 757824 | Mar 6, 2013 | Mar 6, 2013 | Anadarko E&P Onshore LLC | Diamond H State Unit A #2HH | 8,770 | 12735398 |
| 757733 | Mar 5, 2013 | Mar 5, 2013 | Buffco Production Inc. | Escondido #3 | 12,000 | 12735397 |
| 757733Amendment | Mar 5, 2013 | Mar 5, 2013 | Buffco Production Inc. | Escondido #3 | 12,000 | 12735397 |
| 757703 | Mar 4, 2013 | Mar 4, 2013 | Anadarko E&P Onshore LLC | Diamond H State Unit A #1HH | 8,770 | 12735396 |
| 757661 | Mar 4, 2013 | Mar 4, 2013 | Newfield Exploration Company | Moro Creek #2302HH | 7,500 | 12735395 |
| 757637 | Mar 4, 2013 | Mar 4, 2013 | Anadarko E&P Onshore LLC | Briscoe Friday Ranch #38HH | 9,000 | 12735391 |
| 757643 | Mar 1, 2013 | Mar 1, 2013 | Anadarko E&P Onshore LLC | Briscoe Friday Ranch #40HH | 9,000 | 12735394 |
| 757640 | Mar 1, 2013 | Mar 1, 2013 | Anadarko E&P Onshore LLC | Briscoe Friday Ranch #39HH | 9,000 | 12735393 |
| 757634 | Mar 1, 2013 | Mar 1, 2013 | Anadarko E&P Onshore LLC | Briscoe Friday Ranch #37HH | 9,000 | 12735392 |
| 757593 | Mar 1, 2013 | Mar 1, 2013 | Anadarko E&P Onshore LLC | Briscoe Friday Ranch #36HH | 9,000 | 12735388 |
| 757592 | Mar 1, 2013 | Mar 1, 2013 | Anadarko E&P Onshore LLC | Briscoe Friday Ranch #35HH | 9,000 | 12735387 |
| 757591 | Mar 1, 2013 | Mar 1, 2013 | Anadarko E&P Onshore LLC | Briscoe Friday Ranch #24HH | 9,000 | 12735389 |
| 757587 | Mar 1, 2013 | Mar 1, 2013 | Anadarko E&P Onshore LLC | Briscoe Friday Ranch #23HH | 9,000 | 12735385 |
| 757583 | Mar 1, 2013 | Mar 1, 2013 | Rosetta Resources Operating LP | Briscoe Ranch EF #16H | 8,500 | 12735386 |
| 757582 | Mar 1, 2013 | Mar 1, 2013 | Rosetta Resources Operating LP | Briscoe Ranch EF #15H | 8,500 | 12735384 |
| 757581 | Mar 1, 2013 | Mar 1, 2013 | Rosetta Resources Operating LP | Briscoe Ranch EF #14H | 8,500 | 12735390 |
| 754394 | Mar 1, 2013 | Mar 1, 2013 | Anadarko E&P Onshore LLC | Briscoe Springman Unit B #3HH | 9,000 | 12735287 |
| 754407 | Feb 27, 2013 | Feb 27, 2013 | Anadarko E&P Onshore LLC | Briscoe Springman Unit B #6HH | 9,000 | 12735290 |
| 754407Amendment | Feb 27, 2013 | Feb 27, 2013 | Anadarko E&P Onshore LLC | Briscoe Springman Unit B #6HH | 9,000 | 12735290 |
| 754404 | Feb 27, 2013 | Feb 27, 2013 | Anadarko E&P Onshore LLC | Briscoe Springman Unit B #5HH | 9,000 | 12735289 |
| 754398 | Feb 27, 2013 | Feb 27, 2013 | Anadarko E&P Onshore LLC | Briscoe Springman Unit B #4HH | 9,000 | 12735288 |
| 754388 | Feb 27, 2013 | Feb 27, 2013 | Anadarko E&P Onshore LLC | Briscoe Springman Unit A #6HH | 9,000 | 12735282 |
| 754385 | Feb 27, 2013 | Feb 27, 2013 | Anadarko E&P Onshore LLC | Briscoe Springman Unit A #5HH | 9,000 | 12735283 |
| 754383 | Feb 27, 2013 | Feb 27, 2013 | Anadarko E&P Onshore LLC | Briscoe Springman Unit A #4HH | 9,000 | 12735281 |
| 754376 | Feb 27, 2013 | Feb 27, 2013 | Anadarko E&P Onshore LLC | Briscoe Springman Unit A #3HH | 9,000 | 12735280 |
| 757288 | Feb 25, 2013 | Feb 25, 2013 | Newfield Exploration Company | Cmww A #4314HH | 7,500 | 12735382 |
| 757285 | Feb 25, 2013 | Feb 25, 2013 | Newfield Exploration Company | Cmww A #4313HH | 7,500 | 12735383 |
| 757154 | Feb 25, 2013 | Feb 25, 2013 | Newfield Exploration Company | Asherton Unit A #2804HH | 7,000 | 12735381 |
| 754392 | Feb 25, 2013 | Feb 25, 2013 | Anadarko E&P Onshore LLC | Briscoe Springman Unit B #2HH | 9,000 | 12735286 |
| 754374 | Feb 25, 2013 | Feb 25, 2013 | Anadarko E&P Onshore LLC | Briscoe Springman Unit A #2HH | 9,000 | 12735279 |
| 757152 | Feb 22, 2013 | Feb 22, 2013 | Newfield Exploration Company | Asherton Unit A #2803HH | 7,000 | 12735380 |
| 757070 | Feb 22, 2013 | Feb 22, 2013 | Newfield Exploration Company | Asherton Unit A #2802HH | 7,000 | 12735379 |
| 757067 | Feb 22, 2013 | Feb 22, 2013 | Newfield Exploration Company | Asherton Unit A #2801HH | 7,000 | 12735378 |
| 756945 | Feb 21, 2013 | Feb 21, 2013 | Murphy Expl. & Prod. Co. - USA | King Unit G #2HH | 7,107 | 12735377 |
| 756945Amendment | Feb 21, 2013 | Feb 21, 2013 | Murphy Expl. & Prod. Co. - USA | King Unit G #2HH | 7,107 | 12735377 |
| 756944 | Feb 21, 2013 | Feb 21, 2013 | Murphy Expl. & Prod. Co. - USA | King Unit G #1HH | 7,107 | 12735376 |
| 756925 | Feb 20, 2013 | Feb 20, 2013 | Texas International Oper., LLC | Ranger Beall Ranch #9HH | 8,200 | 12735374 |
| 756925Amendment | Feb 20, 2013 | Feb 20, 2013 | Texas International Oper., LLC | Ranger Beall Ranch #9HH | 8,200 | 12735374 |
| 756924 | Feb 20, 2013 | Feb 20, 2013 | Texas International Oper., LLC | Ranger Beall Ranch #8HH | 8,200 | 12735373 |
| 756924Amendment | Feb 20, 2013 | Feb 20, 2013 | Texas International Oper., LLC | Ranger Beall Ranch #8HH | 8,200 | 12735373 |
| 756369 | Feb 19, 2013 | Feb 19, 2013 | Murphy Expl. & Prod. Co. - USA | King Unit E #2HH | 7,107 | 12735358 |
| 756369Amendment | Feb 19, 2013 | Feb 19, 2013 | Murphy Expl. & Prod. Co. - USA | King Unit E #2HH | 7,107 | 12735358 |
| 756155 | Feb 19, 2013 | Feb 19, 2013 | Chesapeake Operating, Inc. | Ivey Ranch #A 6HH | 9,000 | 12735354 |
| 756774 | Feb 16, 2013 | Feb 16, 2013 | Buffco Production Inc. | Escondido #2HH | 12,000 | 12735371 |
| 756722 | Feb 15, 2013 | Feb 15, 2013 | Buffco Production Inc. | Escondido #1HH | 12,000 | 12735370 |
| 756631 | Feb 15, 2013 | Feb 15, 2013 | Chesapeake Operating, Inc. | Valley Wells Unit 20 Dim #R 4HH | 9,000 | 12735368 |
| 756649 | Feb 14, 2013 | Feb 14, 2013 | Newfield Exploration Company | Cmww A #4312HH | 7,500 | 12735367 |
| 756628 | Feb 14, 2013 | Feb 14, 2013 | Chesapeake Operating, Inc. | Valley Wells Unit 22 Dim #R 1HH | 9,000 | 12735366 |
| 756494 | Feb 13, 2013 | Feb 13, 2013 | Anadarko E&P Onshore LLC | Briscoe Catarina South #27HH | 8,500 | 12735365 |
| 756462 | Feb 13, 2013 | Feb 13, 2013 | Anadarko E&P Onshore LLC | Briscoe Catarina South #26HH | 8,500 | 12735364 |
| 756460 | Feb 13, 2013 | Feb 13, 2013 | Anadarko E&P Onshore LLC | Briscoe Catarina South #25HH | 8,500 | 12735363 |
| 756385 | Feb 13, 2013 | Feb 13, 2013 | Rosetta Resources Operating LP | Briscoe Ranch EF #18H | 8,200 | 12735360 |
| 756400 | Feb 12, 2013 | Feb 12, 2013 | Anadarko E&P Onshore LLC | Briscoe Catarina South #24HH | 8,500 | 12735362 |
| 756387 | Feb 12, 2013 | Feb 12, 2013 | Rosetta Resources Operating LP | Briscoe Ranch EF #19H | 8,200 | 12735361 |
| 756384 | Feb 12, 2013 | Feb 12, 2013 | Rosetta Resources Operating LP | Briscoe Ranch EF #17H | 8,200 | 12735359 |
| 756368 | Feb 12, 2013 | Feb 12, 2013 | Murphy Expl. & Prod. Co. - USA | King Unit E #1HH | 7,107 | 12735357 |
| 756368Amendment | Feb 12, 2013 | Feb 12, 2013 | Murphy Expl. & Prod. Co. - USA | King Unit E #1HH | 7,107 | 12735357 |
| 756245 | Feb 12, 2013 | Feb 12, 2013 | EP Energy E&P Company, L.P. | Ritchie Farms #25HH | 9,600 | 12735356 |
| 756243 | Feb 8, 2013 | Feb 8, 2013 | EP Energy E&P Company, L.P. | Ritchie Farms #24HH | 9,600 | 12735355 |
| 756186 | Feb 7, 2013 | Feb 7, 2013 | Newfield Exploration Company | Cmww A #4311HH | 7,500 | 12735352 |
| 756185 | Feb 7, 2013 | Feb 7, 2013 | Newfield Exploration Company | Cmww A #4310HH | 7,500 | 12735351 |
| 756183 | Feb 7, 2013 | Feb 7, 2013 | Newfield Exploration Company | Cmww A #4309HH | 7,500 | 12735350 |
| 756142 | Feb 7, 2013 | Feb 7, 2013 | Redemption Oil & Gas, LLC | Shook #303 | 3,400 | 12735353 |
| 755629 | Feb 7, 2013 | Feb 7, 2013 | Dawsey Operating Company | Miller #1HH | 7,000 | 12735348 |
| 755629Amendment | Feb 7, 2013 | Feb 7, 2013 | Gambit Resources, Inc. | Miller #1HH | 7,000 | 12735348 |
| 756125 | Feb 6, 2013 | Feb 6, 2013 | Texas International Oper., LLC | Ranger Beall Ranch #7HH | 8,200 | 12735349 |
| 756125Amendment | Feb 6, 2013 | Feb 6, 2013 | Texas International Oper., LLC | Ranger Beall Ranch #7HH | 8,200 | 12735349 |
| 755960 | Feb 5, 2013 | Feb 5, 2013 | EP Energy E&P Company, L.P. | Ritchie Farms #29HH | 9,600 | 12735339 |