| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | H & B Petroleum Corp. | Hutchinson, KS 67504 | Oil & Gas Operator | Jun 2025 |
| 2 | H & C Oil Operating Inc. | Plainville, KS 67663 | Oil & Gas Operator | Jun 2025 |
| 3 | H & M Petroleum Corporation | Lincoln, NE 68516 | Oil & Gas Operator | Jun 2025 |
| 4 | H-30 Incorporate | Oil & Gas Operator | Nov 1990 | |
| 5 | Hansen Dane G TR | Oil Operator | Feb 1995 | |
| 6 | Hansen, Dane G. - Trust | Logan, KS 67646 | Oil Operator | Oct 2013 |
| 7 | Helmerich & Payn | Oil & Gas Operator | Aug 1995 | |
| 8 | Hembree Robert F | Oil Operator | Dec 2009 | |
| 9 | Herman L. Loeb, LLC | Lawrenceville, IL 62439 | Oil & Gas Operator | Jun 2025 |
| 10 | HG Oil Holdings, LLC | Hoisington, KS 67544 | Oil & Gas Operator | Jun 2025 |
| 11 | Hoover Noble C | Oil Operator | Nov 1992 |