| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 6601 | Zollinger Veldon Inc | Crescent, OK 73028-9280 | Oil & Gas Operator | Nov 2018 |
| 6602 | ZP Disposal Systems LLC | Kingfisher, OK 73750 | Oil Operator | Jun 2026 |
| 6603 | Zuhone William H | Mattoon, IL 61938-4019 | Oil & Gas Operator | Jan 2015 |
| 6604 | Zumyers Inc | Newalla, OK 74857-0259 | Oil Operator | Apr 2003 |
| 6605 | ZZ Energy LLC | Norman, OK 73070 | Gas Operator | May 2026 |
| 6606 | Zzron Inc. | Midland, TX 79704 | Oil & Gas Operator | Aug 2003 |