| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | H & L Operating Company | Amarillo, TX 79114 | Oil & Gas Operator | Feb 2020 |
| 2 | Hamilton Brother | Gas Operator | May 1993 | |
| 3 | Harris Oil & Gas Company | Denver, CO 80202 | Oil & Gas Operator | Jun 2016 |
| 4 | Hawkins Oil & Ga | Oil & Gas Operator | Jun 1995 | |
| 5 | Hawkins Oil & Gas Inc | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2016 |
| 6 | Herman L. Loeb, LLC | Lawrenceville, IL 62439 | Oil & Gas Operator | Dec 2023 |
| 7 | High Plains Production, LLC | Murray, KY 42071 | Oil & Gas Operator | Dec 2023 |
| 8 | Huber J M Corp | Edison, NJ 08837 | Oil & Gas Operator | Apr 2024 |
| 9 | Huber J M Corpor | Oil & Gas Operator | Dec 1996 | |
| 10 | Hugoton Energy C | Oil & Gas Operator | Feb 2004 | |
| 11 | Hugoton Energy Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | Dec 2019 |