| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Z G Exploration Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | Feb 2005 |
| 2 | Zarvona Energy LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2024 |
| 3 | Zeal Production Company | Oil & Gas Operator | Jan 2024 | |
| 4 | Zenergy Inc | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2024 |
| 5 | Zimet Brothers Inc | Oil Operator | Mar 2008 | |
| 6 | Zimtex Energy LLC | Oil & Gas Operator | Nov 2017 | |
| 7 | Zinke & Trumbo LTD | Tulsa, OK 74105 | Oil & Gas Operator | Sep 2017 |