| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | H And H Star Energy Inc Dba Petrostar Energy | Oil & Gas Operator | Feb 2004 | |
| 2 | Halex Inc | Oil & Gas Operator | Nov 1988 | |
| 3 | Hawkins Oil Of Michigan Inc | Oil & Gas Operator | Aug 2003 | |
| 4 | Hound Resources LLC | Oil & Gas Operator | Dec 2024 | |
| 5 | Howard Energy Co Inc | Oil & Gas Operator | Aug 2011 | |
| 6 | Hunt Energy Corporation | Oil & Gas Operator | Feb 2002 |