| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 801 | Zadeck Energy Group | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2011 |
| 802 | Zivney Energy | White Oak, TX 75693 | Oil & Gas Operator | Jul 2026 |
| 803 | Zone Energy, LLC | Houston, TX 77251 | Oil & Gas Operator | Jan 2025 |
| 804 | ZTH Operating, LLC | Troup, TX 75789 | Oil & Gas Operator | Jul 2026 |