| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Oaks Petroleum I | Oil Operator | Jul 1987 | |
| 2 | Oil Drillers & D | Oil & Gas Operator | Feb 1992 | |
| 3 | Oil Gas Management, Inc. | Kansas City, MO 64106 | Oil Operator | Apr 2011 |
| 4 | Owi Operating Co. LC | Ottawa, KS 66067 | Oil & Gas Operator | Dec 2009 |