| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 401 | William K. Barker & Associates | Oil & Gas Operator | Dec 1986 | |
| 402 | Woodward Petroleum | Oil & Gas Operator | Dec 2003 | |
| 403 | Worldwide Energy Corporation | Freer, TX 78357 | Oil & Gas Operator | Jan 1997 |
| 404 | Zonal Holding Corp. | Oil Operator | Dec 1998 | |
| 405 | Zynergy LLC | Oil Operator | Nov 2025 |