| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | J & K Operating Company Inc. | Oil & Gas Operator | Mar 2026 | |
| 2 | J. E. Baker | Oil Operator | Dec 1998 | |
| 3 | J. M. Van Horn Operator | Oil Operator | Dec 1989 | |
| 4 | J.P. Oil Company LLC | Oil & Gas Operator | Jan 2026 | |
| 5 | Jaco Production Company | Bakersfield, CA 93380 | Oil Operator | Dec 2025 |
| 6 | James Sherman & Dennis Weese | Oil & Gas Operator | Dec 2025 | |
| 7 | John L. Sowers | Oil & Gas Operator | Dec 2009 | |
| 8 | JXR Company | Oil Operator | Dec 1991 |