| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | K. G. H. Enterprises | Oil Operator | Dec 2003 | |
| 2 | K.B. Oil & Gas | Oil & Gas Operator | Sep 2025 | |
| 3 | Kaiser Energy Inc | Denver, CO 80202 | Oil & Gas Operator | Dec 1990 |
| 4 | Kalco Development Corporation | Gas Operator | Dec 1989 | |
| 5 | Kelpetro Operating Inc. | Oil & Gas Operator | Dec 2021 | |
| 6 | Kem Enterprise Inc. | Oil & Gas Operator | Sep 2025 | |
| 7 | Kenneth H. Hunter Jr. | Oil & Gas Operator | Dec 1991 | |
| 8 | Kenneth H. Hunter Jr. Trustee Of The Hunter Living Trust | Oil & Gas Operator | Dec 2001 | |
| 9 | Kenneth Lopez And Conway Lopez | Oil & Gas Operator | Sep 2025 | |
| 10 | Kern Front-Section 35-Partners | Oil & Gas Operator | Sep 2025 | |
| 11 | Kern River Holdings II LLC | Oil & Gas Operator | Oct 2025 | |
| 12 | Kernview Oil Co. | Oil & Gas Operator | Dec 2003 | |
| 13 | Key Production Company, Inc. | Longview, TX 75606 | Oil & Gas Operator | Aug 2025 |
| 14 | KMP Operating Inc. | Oil Operator | Sep 2025 | |
| 15 | Koch Exploration Company | Houston, TX 77046 | Oil & Gas Operator | Apr 2003 |