| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | H M Jarred & Walsh-Watts | Oil & Gas Operator | Sep 1992 | |
| 2 | Hardy Oil & Gas USA Inc. | Houston, TX 77079 | Oil & Gas Operator | Jun 1996 |
| 3 | Harvey Broyles | Oil & Gas Operator | May 2012 | |
| 4 | Hawkins Oil & Gas Inc | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2016 |
| 5 | Hilliard Petroleum Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Sep 2009 |
| 6 | Hillside Oil & Gas, LLC | Midland, TX 79708 | Oil & Gas Operator | Apr 2016 |
| 7 | Hunt Brothers Producing Co Inc | Redding, CA 96049-2516 | Oil & Gas Operator | Sep 2012 |
| 8 | Hunt Oil Co., Et Al | Oil & Gas Operator | Nov 1992 | |
| 9 | Hunt Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Nov 2024 |
| 10 | Hurley Petroleum Corporation | Baton Rouge, LA 70821 | Oil & Gas Operator | Feb 2000 |