| Alvarado 2014 LLC |
23798 |
| Anadarko Minerals Inc |
19904 |
| Apache Corp |
6778 |
| Atchley Resources Inc |
20266 |
| Blue Dolphin Production LLC |
20881 |
| BP America Production Company |
1640 |
| BRG Petroleum LLC |
21665 |
| Brown & Borelli Inc |
2570 |
| Camino Natural Resources LLC |
24097 |
| Casillas Petroleum Corp |
17728 |
| Castelli Exploration |
18891 |
| Chaco Energy Company |
18685 |
| Chaparral Energy LLC |
16896 |
| Charter Oak Production Co LLC |
21672 |
| Chesapeake Operating LLC |
17441 |
| Cimarex Energy Co |
21194 |
| Cimarex Energy Co Of Colorado |
3653 |
| Citizen Energy III, LLC |
24120 |
| Citizen Energy II LLC |
23559 |
| Continental Resources Inc |
3186 |
| Devon Energy Production Co LP |
20751 |
| Eagle Exploration Production LLC |
23413 |
| Enervest Operating LLC |
19848 |
| Gilliland Oil & Gas Inc |
10818 |
| Hamil Oil & Gas |
23264 |
| Hulen Operating Co |
19626 |
| Hux Oil Company LLC |
21988 |
| Jones Energy LLC |
21043 |
| Kaiser-Francis Oil Co |
6390 |
| Kirkpatrick Oil Co Inc |
19792 |
| Marathon Oil Co |
1363 |
| Newfield Exploration Mid-Continent Inc |
20944 |
| Oklahoma Prime Energy LLC |
23208 |
| Paloma Operating Company |
23932 |
| Pride Energy Company |
19430 |
| Qep Energy Company |
4147 |
| Red Bluff Resources LLC |
23828 |
| Rimrock Resource Operating LLC |
23802 |
| RKK Production Co |
17184 |
| Roan Resources LLC |
24127 |
| Rox Exploration Inc |
18783 |
| Sandridge Exploration And Production LLC |
22281 |
| Shoreline Operating LLC |
8503 |
| Singer Oil Co LL C |
19769 |
| Stone Oak Operating LLC |
24011 |
| Teocalli Exploration LLC |
24262 |
| Te-Ray Resources Inc |
20522 |
| The Quintin Little Co Inc |
16083 |
| Travis Peak Resources LLC |
23914 |
| Triumph Energy Partners LLC |
23826 |
| United Production Co LLC |
20068 |
| Unit Petroleum Co |
16711 |
| Veenker Resources Inc |
17357 |
| Vernon E Faulconer Inc |
11441 |
| Western Oil & Gas Dev Corp |
14635 |