| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Hamon Oil Company | Oil & Gas Operator | Aug 1985 | |
| 2 | Hamon Operating Company | Dallas, TX 75201 | Oil & Gas Operator | Dec 2011 |
| 3 | Hexagon Oil And Gas Inc. | Fort Worth, TX 76132 | Oil & Gas Operator | Apr 2024 |
| 4 | Hughes & Hughes | Oil & Gas Operator | May 1984 | |
| 5 | Hughes Eastern Corporation | Ridgeland, MS 39157 | Oil & Gas Operator | Dec 2023 |
| 6 | Hughes Eastern Petroleum, LTD. | Oil & Gas Operator | Jun 1986 | |
| 7 | Hunt Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Apr 2024 |