Oil & Gas Companies in Crook County, WY
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | Ranch Oil Company | West Linn, OR 97068 | Oil & Gas Operator | Mar 2026 |
| 2 | Red Rock Resources Corporation | Greenwood VIllage, CO 80111 | Oil & Gas Operator | Feb 2026 |
| 3 | Red Tiger Oil & Gas LLC | Gillette, WY 82718 | Oil & Gas Operator | Jan 2026 |
| 4 | Resolute Wyoming Inc | Denver, CO 80203 | Oil & Gas Operator | May 2018 |
| 5 | Richardson Oil Company | San Antonio, TX 78216 | Oil & Gas Operator | Aug 2003 |
| 6 | Richardson Operating Company | Denver, CO 80237 | Oil & Gas Operator | Feb 2026 |
| 7 | Ridgeland Wyoming Inc | | Oil Operator | Dec 2014 |
| 8 | Rim Operating, Inc. | Englewood, CO 80112 | Oil & Gas Operator | Apr 2026 |
| 9 | Rme Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Nov 2016 |
| 10 | Rochelle Oil & Gas | Gillette, WY 82717 | Oil & Gas Operator | Mar 2024 |
| 11 | Rock Creek Resources LLC | Englewood, CO 80112 | Oil & Gas Operator | Dec 2021 |
| 12 | Rock Oil Corporation | Lawrence, KS 66046 | Oil Operator | Oct 2004 |
| 13 | Roemer Oil Company | Denver, CO 80202 | Oil & Gas Operator | Nov 1998 |
| 14 | Ruby Drilling Company Inc | Gillette, WY 82718 | Oil Operator | Oct 2007 |
Production numbers shown above are only for Crook County, WY and for the production period listed.