| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Zachry Exploration, LLC | San Antonio, TX 78224 | Oil & Gas Operator | Mar 2025 |
| 2 | Zadeck Energy Group Inc | Oil & Gas Operator | Dec 2011 | |
| 3 | Zenergy Inc | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2024 |
| 4 | Zero Mass Mining, LLC | Oil Operator | Jan 2025 | |
| 5 | Zinke & Trumbo, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2007 |