| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Karbuhn Oil Company | Tomball, TX 77375 | Oil & Gas Operator | May 2024 |
| 2 | Kedco Management Corp | Oil & Gas Operator | Jul 1985 | |
| 3 | Kele Exploration, Inc. | Oil & Gas Operator | Apr 1990 | |
| 4 | Kelly H. Baxter | Austin, TX 78767 | Oil & Gas Operator | Nov 2006 |
| 5 | Kelly Oil Company | Oil & Gas Operator | Sep 2013 | |
| 6 | Kerr-McGee Corporation | Dallas, TX 75380 | Oil & Gas Operator | Sep 2023 |
| 7 | Kerr-McGee Oil & Gas Corp. | Houston, TX 77251 | Oil & Gas Operator | Sep 2006 |
| 8 | Kewanee Oil Company | Houston, TX 77001 | Oil & Gas Operator | Aug 1978 |
| 9 | Key Operating Co., Inc. | Duncan, OK 73534-1284 | Oil & Gas Operator | Jan 2024 |
| 10 | Koch Gateway Pipeline Company | Oil & Gas Operator | Feb 2001 | |
| 11 | Konantz, Inc. | Oil & Gas Operator | Jan 1995 |