| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Zafar Oil & Gas, Inc. | Oklahoma City, OK 73132 | Oil Operator | Aug 2013 |
| 2 | Zenergy Inc | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2024 |
| 3 | Zilkha Energy Company | Houston, TX 77046 | Oil & Gas Operator | Oct 2002 |
| 4 | Zimet Brothers Inc | Oil Operator | Mar 2008 |