| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | H & H Compressors, Inc. | Oil & Gas Operator | Oct 1997 | |
| 2 | H. K. Beebe | Oil Operator | Jan 1990 | |
| 3 | H.L.Hawkins &H.L.Hawkins, Jr. | Oil & Gas Operator | Feb 1989 | |
| 4 | Hanson Natural Resources Co. | Oil & Gas Operator | Nov 1991 | |
| 5 | Harter Oil Company | Oil & Gas Operator | Apr 2011 | |
| 6 | Hassie Hunt Expl. Company | Dallas, TX 75201 | Oil & Gas Operator | Aug 2008 |
| 7 | Hawkeye Drilling Co. | Waskom, TX 75692 | Oil & Gas Operator | Feb 2023 |
| 8 | Hibbard-Frost-Smith | Oil & Gas Operator | Apr 1990 | |
| 9 | Hogan Drilling Company, Inc. | Oil & Gas Operator | Mar 1981 | |
| 10 | Hogan Exploration, Inc. | Oil & Gas Operator | Mar 2000 | |
| 11 | Holland Production Co | Oil Operator | Aug 1982 | |
| 12 | Hunt Investment Corporation | Oil & Gas Operator | Jun 1989 | |
| 13 | Hunt Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Nov 2024 |
| 14 | Hunt Petroleum Corporation | Dallas, TX 75201 | Oil & Gas Operator | Nov 2008 |
| 15 | Hurley Oil And Gas Company | Oil & Gas Operator | Jan 1997 | |
| 16 | Hurley Petroleum Corporation | Baton Rouge, LA 70821 | Oil & Gas Operator | Feb 2000 |