| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Hall Exploration, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2026 |
| 2 | Halliburton Oil Producing Co. | Duncan, OK 73534 | Oil & Gas Operator | Apr 2016 |
| 3 | Henderson Fred J | Okmulgee, OK 74447 | Oil & Gas Operator | Apr 2026 |
| 4 | Highmark Energy Operating, LLC | Houston, TX 77253 | Oil & Gas Operator | Jul 2026 |
| 5 | Hooks Dwain | Tatums, OK 73487 | Oil & Gas Operator | Mar 2026 |