Oil & Gas Companies in Williams County, ND
| Company Name | Company Location | Company Type | Most Recent Production |
| 1 | Pan American Petroleum Corp | | Oil & Gas Operator | Jan 2008 |
| 2 | Paul Rankin Inc. | | Oil & Gas Operator | Aug 2025 |
| 3 | PDC Corporation | | Oil & Gas Operator | Jan 2011 |
| 4 | Petro Harvester Operating Company, LLC | | Oil & Gas Operator | Nov 2022 |
| 5 | Petro-Hunt, L.L.C. | Dallas, TX 75201 | Oil & Gas Operator | Oct 2025 |
| 6 | Phoenix Operating LLC | Denver, CO 80237 | Oil & Gas Operator | Aug 2025 |
| 7 | Phoenix Petroleum, LLC | | Oil & Gas Operator | Aug 2025 |
| 8 | Pintail Petroleum Inc. | Wichita, KS 67202 | Oil & Gas Operator | Jun 2010 |
| 9 | Pintail Petroleum, LTD. | Wichita, KS 67202 | Oil & Gas Operator | Apr 2021 |
| 10 | Pogo Producing Company | Houston, TX 77002 | Oil & Gas Operator | Jan 2008 |
| 11 | Pogo Producing Company LLC | Houston, TX 77002 | Oil & Gas Operator | Jul 2025 |
| 12 | Prairie Production, Inc. | | Oil & Gas Operator | Apr 2020 |
| 13 | Prima Exploration, Inc. | Denver, CO 80206 | Oil & Gas Operator | Aug 2025 |
| 14 | Primewest Petroleum Inc. | Centennial, CO 80111 | Oil & Gas Operator | Jan 2009 |
| 15 | Prospective Investment & Trading Co., LTD., The | Tulsa, OK 74170-2320 | Oil & Gas Operator | Apr 2014 |
| 16 | Proven Petroleum, Inc. | Lakewood, CO 80228 | Oil & Gas Operator | Aug 2025 |
Production numbers shown above are only for Williams County, ND and for the production period listed.