| Emma Tartt #23HHZ42-013-34537 | XTO Energy Inc. only | Atascosa, TXEagleville (Eagle Ford-1) | ActiveOil | 10,552 | Jun 8, 2012 | — | — |
| Schroeder-Chapman Unit #3HHZ42-013-34532 | Marathon Oil EF LLC only | Atascosa, TXEagleville (Eagle Ford-1) | ActiveOil | 11,369 | Jun 6, 2012 | — | — |
| Wright-Keathley Unit #2HHZ42-013-34531 | Marathon Oil EF LLC only | Atascosa, TXEagleville (Eagle Ford-1) | PluggedOil | 15,000 | May 29, 2012 | — | — |
| Wright-Keathley Unit #1HHZ42-013-34534 | Marathon Oil EF LLC only | Atascosa, TXEagleville (Eagle Ford-1) | PluggedOil | 15,000 | May 29, 2012 | — | — |
| Schroeder-Chapman Unit #2HHZ42-013-34530 | Marathon Oil EF LLC only | Atascosa, TXEagleville (Eagle Ford-1) | Shut inOil | 11,340 | May 25, 2012 | — | — |
| R. May a #5HHZ42-013-34529 | Marathon Oil EF LLC only | Atascosa, TXEagleville (Eagle Ford-1) | Shut inOil | 10,966 | May 22, 2012 | — | — |
| Foushee-Henke Unit #1HHZ42-013-34528 | Marathon Oil EF LLC only | Atascosa, TXEagleville (Eagle Ford-1) | ActiveOil | 10,541 | May 19, 2012 | — | — |
| R. May a #4HHZ42-013-34525 | Marathon Oil EF LLC only | Atascosa, TXEagleville (Eagle Ford-1) | Shut inOil | 10,919 | May 18, 2012 | — | — |
| May-Chapman #2HHZ42-013-34526 | Marathon Oil EF LLC only | Atascosa, TXEagleville (Eagle Ford-1) | ActiveGas | 11,225 | May 18, 2012 | — | — |
| H.E. Unit #1HHZ42-013-34527 | EOG Resources Inc. only | Atascosa, TXEagleville (Eagle Ford-1) | ActiveOil | 9,499 | May 18, 2012 | — | — |
| Hierholzer Unit #1HHZ42-013-34306 | Marathon Oil EF LLC only | Atascosa, TXEagleville (Eagle Ford-1) | ActiveOil | 10,495 | May 17, 2012 | — | — |
| Anthony West Unit #1HHZ42-013-34522 | Murphy Expl. & Prod. Co. - USA only | Atascosa, TXEagleville (Eagle Ford-1) | ActiveOil | 10,896 | May 17, 2012 | — | — |
| Anthony East Unit 1 #1HHZ42-013-34524 | Murphy Expl. & Prod. Co. - USA only | Atascosa, TXEagleville (Eagle Ford-1) | ActiveOil | 10,880 | May 17, 2012 | — | — |
| Foushee Unit #1HHZ42-013-34523 | Marathon Oil EF LLC only | Atascosa, TXEagleville (Eagle Ford-1) | ActiveOil | 10,947 | May 11, 2012 | — | — |
| Middle McCowen #29HHZ42-013-34518 | Marathon Oil EF LLC only | Atascosa, TXEagleville (Eagle Ford-1) | ActiveOil | 10,359 | May 4, 2012 | — | — |
| D.D. Heinen #14HHZ42-013-34519 | Matador Production Companypermitted by · no operator of record | Atascosa, TXCoughran (Austin Chalk) | Not on schedule | 10,000 | May 4, 2012 | — | — |
| Middle McCowen #30HHZ42-013-34520 | Marathon Oil EF LLC only | Atascosa, TXEagleville (Eagle Ford-1) | Shut inOil | 9,973 | May 4, 2012 | — | — |
| R. May a #3HHZ42-013-34521 | Marathon Oil EF LLC only | Atascosa, TXEagleville (Eagle Ford-1) | Shut inOil | 10,918 | May 4, 2012 | — | — |
| Skeeter Unit #1HHZ42-013-34516 | Texas American Resources Company only | Atascosa, TXEagleville (Eagle Ford-1) | ActiveOil | 8,313 | May 3, 2012 | — | — |
| Alltex Disposal Solutions SWD #142-013-34517 | Alltex Disposal Solutions LLCpermitted by · no operator of record | Atascosa, TXPleasanton, S. (Carrizo Sand) | Not on schedule | 11,000 | May 3, 2012 | — | — |
| Skeeter Unit #2HHZ42-013-34513 | Texas American Resources Company only | Atascosa, TXEagleville (Eagle Ford-1) | ActiveOil | 8,330 | May 2, 2012 | — | — |
| Brymer #1HHZ42-013-34512 | Murphy Expl. & Prod. Co. - USA only | Atascosa, TXEagleville (Eagle Ford-1) | ActiveOil | 9,672 | Apr 24, 2012 | — | — |
| Skeeter Unit #3HHZ42-013-34511 | Texas American Resources Company only | Atascosa, TXEagleville (Eagle Ford-1) | ActiveOil | 8,372 | Apr 21, 2012 | — | — |
| Herbst Unit a #1HHZ42-013-34509 | Murphy Expl. & Prod. Co. - USA only | Atascosa, TXEagleville (Eagle Ford-1) | ActiveOil | 9,293 | Apr 20, 2012 | — | — |
| Herbst Unit B #1HHZ42-013-34510 | Murphy Expl. & Prod. Co. - USA only | Atascosa, TXEagleville (Eagle Ford-1) | ActiveOil | 9,909 | Apr 20, 2012 | — | — |
| Seewald #1HHZ42-013-34508 | Murphy Expl. & Prod. Co. - USA only | Atascosa, TXEagleville (Eagle Ford-1) | ActiveOil | 9,343 | Apr 19, 2012 | — | — |
| Emma Tartt #19HHZ42-013-34505 | XTO Energy Inc. only | Atascosa, TXEagleville (Eagle Ford-1) | Shut inOil | 10,589 | Apr 17, 2012 | — | — |
| May-Chapman #1HHZ42-013-34506 | Marathon Oil EF LLC only | Atascosa, TXEagleville (Eagle Ford-1) | ActiveOil | 11,254 | Apr 17, 2012 | — | — |
| Lonestar Unit #442-013-00906 | Excalibur E & P LLC only | Atascosa, TXPleasanton (Edwards Lime) | PluggedOil | 8,235 | Apr 13, 2012 | — | — |
| Emma Tartt #18HHZ42-013-34504 | XTO Energy Inc. only | Atascosa, TXEagleville (Eagle Ford-1) | Shut inOil | 10,214 | Apr 13, 2012 | — | — |
| Lone Star Unit #1HHZ42-013-34497 | Murphy Expl. & Prod. Co. - USApermitted by · no operator of record | Atascosa, TXEagleville (Eagle Ford-1) | Not on schedule | 7,700 | Apr 12, 2012 | — | — |
| Heinen D. D. #1042-013-30364 | LPG Energy Company only | Atascosa, TXCoughran (Austin Chalk) | PluggedOil | 5,870 | Apr 10, 2012 | — | — |
| Rsi Atascosa SWD #142-013-34501 | South Texas Oilfield Sol LLC only | Atascosa, TXEagleville (Eagle Ford-1) | ActiveInjection | 6,240 | Apr 10, 2012 | — | — |
| Gann Festervan #1HHZ42-013-34502 | Valence Operating Company only | Atascosa, TXEagleville (Eagle Ford-1) | ActiveOil | 9,323 | Apr 6, 2012 | — | — |
| Atascosa SWD #142-013-34499 | Water Energy Services LLC only | Atascosa, TXJourdanton | PluggedOil | 9,500 | Apr 5, 2012 | — | — |
| Mutz #1HHZ42-013-34500 | Marathon Oil EF LLCpermitted by · no operator of record | Atascosa, TXEagleville (Eagle Ford-1) | Not on schedule | 14,100 | Apr 5, 2012 | — | — |
| White Tail Unit #1HHZ42-013-34498 | Trailblazer Energy Resources LLC only | Atascosa, TXEagleville (Eagle Ford-1) | ActiveOil | 7,931 | Apr 4, 2012 | — | — |
| Herbst-May Unit #1HHZ42-013-34494 | Murphy Expl. & Prod. Co. - USA only | Atascosa, TXEagleville (Eagle Ford-1) | ActiveOil | 9,649 | Mar 30, 2012 | — | — |
| Middle McCowen #17HHZ42-013-34495 | Marathon Oil EF LLC only | Atascosa, TXEagleville (Eagle Ford-1) | ActiveOil | 10,398 | Mar 30, 2012 | — | — |
| Middle McCowen #18HHZ42-013-34496 | Marathon Oil EF LLC only | Atascosa, TXEagleville (Eagle Ford-1) | ActiveOil | 9,916 | Mar 30, 2012 | — | — |
| R.H. Pickens et al B #8HHZ42-013-34493 | Javelin Energy Partners Mgmt LLC only | Atascosa, TXBriscoe Ranch (Eagleford) | ActiveOil | 7,490 | Mar 27, 2012 | — | — |
| J Rayes #21HHZ42-013-34492 | Javelin Energy Partners Mgmt LLC only | Atascosa, TXEagleville (Eagle Ford-1) | ActiveOil | 10,203 | Mar 24, 2012 | — | — |
| Red Stag Unit #1HHZ42-013-34490 | EOG Resources Inc. only | Atascosa, TXEagleville (Eagle Ford-1) | ActiveOil | 10,567 | Mar 22, 2012 | — | — |
| R. May a #2HHZ42-013-34491 | Marathon Oil EF LLC only | Atascosa, TXEagleville (Eagle Ford-1) | ActiveOil | 10,901 | Mar 22, 2012 | — | — |
| Middle McCowen #12HHZ42-013-34484 | Marathon Oil EF LLC only | Atascosa, TXEagleville (Eagle Ford-1) | ActiveOil | 11,082 | Mar 21, 2012 | — | — |
| Nancy Edmund Unit #1HHZ42-013-34487 | Murphy Expl. & Prod. Co. - USA only | Atascosa, TXEagleville (Eagle Ford-1) | ActiveOil | 10,836 | Mar 16, 2012 | — | — |
| Et #1HHZ42-013-34488 | Murphy Expl. & Prod. Co. - USA only | Atascosa, TXEagleville (Eagle Ford-1) | ActiveOil | 10,917 | Mar 16, 2012 | — | — |
| Honey Badger Unit #1HHZ42-013-34489 | Trailblazer Energy Resources LLC only | Atascosa, TXEagleville (Eagle Ford-1) | ActiveOil | 8,503 | Mar 16, 2012 | — | — |
| Pintail Unit #4HHZ42-013-34486 | EOG Resources Inc. only | Atascosa, TXEagleville (Eagle Ford-1) | ActiveOil | 9,445 | Mar 14, 2012 | — | — |
| R. May a #1HHZ42-013-34485 | Marathon Oil EF LLC only | Atascosa, TXEagleville (Eagle Ford-1) | Shut inOil | 10,970 | Mar 9, 2012 | — | — |