| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | H & S Drilling Co Inc | Frazeysburg, OH 43822 | Oil & Gas Operator | Dec 2016 |
| 2 | Harbor Petroleum, LLC | Granbury, TX 76049 | Oil & Gas Operator | Jul 2025 |
| 3 | Hawthorn Energy Partners, LLC | Nichols Hill, OK 73116 | Oil & Gas Operator | Jul 2025 |
| 4 | Hinton Production Company | MT Pleasant, TX 75455 | Oil & Gas Operator | Aug 1995 |
| 5 | Horizon Prod. And Operating, LLC | Houston, TX 77019 | Oil & Gas Operator | Jul 2025 |
| 6 | Hunt Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Jul 2025 |