| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Ody Oil Corp. | Oil & Gas Operator | Oct 1994 | |
| 2 | Oil Patch Operators, LLC | Oil & Gas Operator | Jul 2005 | |
| 3 | Oldfield Operating Corporation | Oil Operator | Dec 2013 | |
| 4 | Opmi Operating Company | Houston, TX 77057 | Oil & Gas Operator | Jun 2008 |
| 5 | Optimistic Oil Co. | Oil & Gas Operator | Dec 1991 |