Oil & Gas Companies in Sweetwater County, WY
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | Rainbow Oil Company | | Oil & Gas Operator | Aug 1999 |
| 2 | Ranch Oil Company | West Linn, OR 97068 | Oil & Gas Operator | Aug 2025 |
| 3 | Ranger Holdings Co | | Oil & Gas Operator | Jul 1993 |
| 4 | Rangeview Resources Operating Co | | Oil & Gas Operator | Jul 2025 |
| 5 | RB Operating Company | Shawnee, OK 74802-1488 | Oil & Gas Operator | Apr 2015 |
| 6 | Reading & Bates Petroleum | | Oil & Gas Operator | Apr 1989 |
| 7 | Reserve Oil & Gas Company | | Oil & Gas Operator | Jul 1981 |
| 8 | Reserve Operating Corp. | Houston, TX 77040 | Oil & Gas Operator | Oct 2025 |
| 9 | Riata Energy Inc | Oklahoma City, OK 73101 | Oil & Gas Operator | Apr 2008 |
| 10 | Richardson Operating Company | Denver, CO 80237 | Oil & Gas Operator | Jul 2025 |
| 11 | Rim Operating, Inc. | Englewood, CO 80112 | Oil & Gas Operator | Oct 2025 |
| 12 | Rio Blanco Energy, Inc. | Littleton, CO 80121 | Oil & Gas Operator | Oct 2002 |
| 13 | River Gas Corporation | Tuscaloosa, AL 35406-2233 | Gas Operator | Dec 2000 |
| 14 | Rme Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Nov 2016 |
| 15 | Robert Hawkins Inc | Kevin, MT 59454 | Oil & Gas Operator | Jul 2025 |
| 16 | Rock Creek Resources LLC | Englewood, CO 80112 | Oil & Gas Operator | Dec 2021 |
| 17 | Rocky Mountain Operating Co Inc | Littleton, CO 80121 | Oil & Gas Operator | Dec 2011 |
| 18 | Roemer Oil Company | Denver, CO 80202 | Oil & Gas Operator | Nov 1998 |
Production numbers shown above are only for Sweetwater County, WY and for the production period listed.