| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | National Petrole | Oil & Gas Operator | Dec 1996 | |
| 2 | National Petroleum Reserves, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Apr 2012 |
| 3 | New Age Oil LLC | Hays, KS 67601 | Oil & Gas Operator | Jun 2025 |
| 4 | Norstar Petroleum Inc | Englewood, CO 80112 | Oil & Gas Operator | Jun 2025 |