Oil & Gas Companies in Sweetwater County, WY
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | Dalen Resources Oil & Gas Co. | Dallas, TX 75206 | Oil & Gas Operator | Jun 2010 |
| 2 | Damson Oil Corporation | Houston, TX 77210 | Oil & Gas Operator | Mar 2005 |
| 3 | Davis Oil Company | Denver, CO 80202 | Oil & Gas Operator | Jun 1988 |
| 4 | Davis Petroleum Corp. | Houston, TX 77027 | Oil & Gas Operator | Oct 2025 |
| 5 | Deca Energy Corporation | | Oil & Gas Operator | Aug 1986 |
| 6 | Decalta International Corp | Denver, CO 80202 | Oil & Gas Operator | Mar 2015 |
| 7 | Devon Energy Production Company LP | Oklahoma City, OK 73102 | Oil & Gas Operator | Oct 2025 |
| 8 | Devon SFS Operating Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2008 |
| 9 | Diamond Oil & Gas LLC | Casper, WY 82604 | Oil & Gas Operator | Aug 2025 |
| 10 | Diamondback Oil Partners LLP | Arvada, CO 80004 | Oil & Gas Operator | Dec 2016 |
| 11 | Dietrich Resources Corporation | | Oil & Gas Operator | Jun 2007 |
| 12 | DNR Oil And Gas, Inc. | Englewood, CO 80155 | Oil & Gas Operator | Aug 2025 |
| 13 | Duncan Energy Company | Denver, CO 80202 | Oil & Gas Operator | Mar 2008 |
| 14 | Duncan Oil Inc | Denver, CO 80210 | Oil & Gas Operator | Jun 2016 |
| 15 | Dyco Petroleum Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2015 |
Production numbers shown above are only for Sweetwater County, WY and for the production period listed.