| Abaco Operating, LLC |
| Black Brush Oil & Gas |
| Columbus Energy, LLC |
| Escondido Resources II, |
| Gulftex Energy, LLC |
| Hurd Enterprises |
| Kaler Energy Corp. |
| Kebo Oil & Gas, Inc. |
| Killam Oil Company |
| Legend Natural Gas III, |
| McCombs Energy |
| Metano Energy LP |
| Miramar Petroleum |
| Pioneer Drilling Co. |
| US Entercorp, LTD |
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