| 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 | Oct 2025 |
| 3 | Zeal Production Company | Sperry, OK 74073-4714 | Oil & Gas Operator | Jul 2025 |
| 4 | Zenergy Inc | Tulsa, OK 74136 | Oil & Gas Operator | Jul 2025 |
| 5 | Zimtex Energy LLC | Perryton, TX 79070-5818 | Oil & Gas Operator | Nov 2017 |
| 6 | Zinke & Trumbo LTD | Tulsa, OK 74105 | Oil & Gas Operator | Sep 2017 |