| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 801 | Zama Petro Inc | Oil & Gas Operator | Dec 2025 | |
| 802 | Zenith Exploration Co Inc | Washington, PA 15301 | Oil & Gas Operator | Dec 2014 |
| 803 | Zoran Oil & Gas Co | Jefferson, OH 44047 | Oil & Gas Operator | Dec 2025 |