| 1 | K & R Oil & Gas | Roswell, NM 88201 | Oil Operator | Jul 1995 |
| 2 | K P Kauffman Company Inc | Denver, CO 80203 | Oil & Gas Operator | Oct 2024 |
| 3 | K&M Resources LLC | Artesia, NM 88211 | Oil & Gas Operator | Sep 2024 |
| 4 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Dec 2024 |
| 5 | Kash Operating LLC | Maljamar, NM 88264 | Oil Operator | Oct 2024 |
| 6 | Kay Jay Oil Co | Artesia, NM 88210 | Oil & Gas Operator | May 2001 |
| 7 | KC Resources Inc | Snowmass VLG., CO 81615 | Oil & Gas Operator | Sep 2024 |
| 8 | KCS Resources, LLC | Houston, TX 77027 | Oil & Gas Operator | Feb 2017 |
| 9 | Kelly H. Baxter | Austin, TX 78767 | Oil & Gas Operator | Nov 2006 |
| 10 | Kelt Oil & Gas, Inc. | Torrance, CA 90503 | Oil & Gas Operator | Dec 2003 |
| 11 | Kem Ventures, LP | Katy, TX 77450 | Oil & Gas Operator | Oct 2024 |
| 12 | Kenson Operating Company Inc | Houston, TX 77002 | Oil & Gas Operator | Sep 2002 |
| 13 | Kent Walker | Midland, TX 79708 | Oil & Gas Operator | Sep 1999 |
| 14 | Kern Co. | Houston, TX 77095 | Oil & Gas Operator | Jan 2021 |
| 15 | Kerns Petroleum, Inc. | San Antonio, TX 78257 | Oil & Gas Operator | Sep 2013 |
| 16 | Kerr-McGee Oil & Gas Onshore LP | Houston, TX 77046 | Oil & Gas Operator | Dec 2024 |
| 17 | Kersey & Company | Ellijay, GA 30540 | Oil & Gas Operator | Jan 2023 |
| 18 | Kevin O Butler & Assoc Inc | Midland, TX 79702 | Oil & Gas Operator | Mar 2024 |
| 19 | Keystone Energy LLC | Farmington, NM 87499 | Oil & Gas Operator | Oct 2024 |
| 20 | Kimbell Oil Company Of Texas | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2024 |
| 21 | Kimlar Oil Company | Kermit, TX 79745 | Oil & Gas Operator | Dec 2024 |
| 22 | Kinder Morgan Production Co LP | Midland, TX 79701 | Oil & Gas Operator | Jul 2007 |
| 23 | Kindred Petroleum Company | Midland, TX 79702 | Oil & Gas Operator | Dec 2024 |
| 24 | Kinlaw Oil Corporation | Dallas, TX 75380 | Oil & Gas Operator | Dec 2024 |
| 25 | Kinney Incorporated | Andrews, TX 79714 | Oil & Gas Operator | Dec 2024 |
| 26 | Klabzuba Oil & Gas Inc | Denver, CO 80202 | Oil & Gas Operator | Aug 2012 |
| 27 | Knox Industries, Inc. | Arlington, TX 76012 | Oil & Gas Operator | Dec 2024 |
| 28 | Koch Exploration Company, LLC | Denver, CO 80202 | Oil & Gas Operator | Jun 2019 |
| 29 | Kratos Operating, LLC | Hobbs, NM 88241 | Oil & Gas Operator | Sep 2024 |
| 30 | Kukui Inc | Houston, TX 77002 | Oil & Gas Operator | Dec 2002 |
| 31 | Kukui Operating Company | Ignacio, CO 81137 | Oil & Gas Operator | May 2013 |