| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Z/F Little Buddy, L.P. | Tyler, TX 75710 | Oil & Gas Operator | Sep 2000 |
| 2 | Zapata-Fender, L. L. C. | Tyler, TX 75710 | Oil & Gas Operator | Apr 2001 |
| 3 | Zarvona Energy LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 4 | Zenith Oil & Gas, LLC | Kilgore, TX 75663 | Oil & Gas Operator | May 2025 |