| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Hanna Oil And Gas Company | Fort Smith, AR 72901 | Oil & Gas Operator | Jul 2025 |
| 2 | Heath Jack A | Tulsa, OK 74132-2403 | Oil & Gas Operator | Jan 2013 |
| 3 | HHH & G Oil Co | Owasso, OK 74055 | Oil Operator | Jun 2020 |
| 4 | Highfill Bob W | Claremore, OK 74018-2595 | Oil Operator | Jun 2005 |
| 5 | Holloway David A | Okmulgee, OK 74447-9191 | Oil & Gas Operator | Jul 2025 |
| 6 | Holt Jean | Claremore, OK 74017-9439 | Oil Operator | Mar 2015 |
| 7 | Hurst Oil Investments Inc | Oklahoma City, OK 73172 | Oil & Gas Operator | Feb 2015 |
| 8 | Hydrocarbon Technology Services | Oil & Gas Operator | Dec 2000 |