| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | H & B Well Service, Inc. | Oil & Gas Operator | Aug 1993 | |
| 2 | H & S Operating Co., Inc. | Winesburg, OH 44690 | Oil & Gas Operator | Dec 2023 |
| 3 | Headington Oil Company | Dallas, TX 75231 | Oil & Gas Operator | Dec 2016 |
| 4 | Hogan Exploration, Inc. | Oil & Gas Operator | Mar 2000 |