Oil & Gas Companies in Weston County, WY
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | Gallagher T P | Boulder, CO 80303 | Oil Operator | Apr 2019 |
| 2 | Gasamat Oil Corp Of Colorado | Boulder, CO 80303 | Oil Operator | Aug 2025 |
| 3 | Getty Oil Company | Hays, KS 67601 | Oil & Gas Operator | Mar 2015 |
| 4 | GLG Energy LP | Austin, TX 78701 | Oil & Gas Operator | Jun 1994 |
| 5 | Goldmark Engineering Inc | Casper, WY 82602 | Oil & Gas Operator | Oct 2004 |
| 6 | Gould Joseph B | Las Vegas, NV 89101 | Oil & Gas Operator | Apr 2001 |
| 7 | Grace Petroleum Corp. | Tulsa, OK 74103 | Oil & Gas Operator | Oct 1997 |
| 8 | Graham Royalty LTD | Covington, LA 70434 | Oil & Gas Operator | Jul 2007 |
| 9 | Grynberg, Jack J. | Denver, CO 80237 | Oil & Gas Operator | Jun 2021 |
| 10 | Guenthart William & Lavonne | Newcastle, WY 82701 | Oil Operator | Apr 2025 |
| 11 | Gulf Oil Corp. | Denver, CO 80201-0599 | Oil & Gas Operator | Dec 2014 |
Production numbers shown above are only for Weston County, WY and for the production period listed.