Oil & Gas Companies in Crook County, WY
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | M & K Oil Company LLC | Gillette, WY 82716 | Oil & Gas Operator | Aug 2025 |
| 2 | Marlin Oil Company LLC | Gillette, WY 82718 | Oil & Gas Operator | Mar 2023 |
| 3 | Marshall & Winston, Inc. | Midland, TX 79710 | Oil & Gas Operator | Aug 2025 |
| 4 | Materi Exploration Inc | Upton, WY 82730 | Oil Operator | Nov 2021 |
| 5 | Maxim Drilling & Expl Inc | Gillette, WY 82717 | Oil & Gas Operator | Aug 2025 |
| 6 | Maximus Operating, LTD. | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2025 |
| 7 | McAdams Roux & Associates | Denver, CO 80202 | Oil & Gas Operator | Dec 1999 |
| 8 | McEna Inc | Tulsa, OK 74135 | Oil & Gas Operator | Jul 2005 |
| 9 | McGuire John C | Gillette, WY 82717 | Oil & Gas Operator | Oct 2005 |
| 10 | McO Resources Corporation | | Oil & Gas Operator | Feb 1986 |
| 11 | Merit Energy Company | Dallas, TX 75240 | Oil & Gas Operator | Oct 2025 |
| 12 | Meritage Energy Partners LLC | Denver, CO 80202 | Oil & Gas Operator | Dec 2005 |
| 13 | Mid-Con Energy Operating, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Aug 2025 |
| 14 | Midgard Energy Company | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2014 |
| 15 | Mineral Resources & Engineering | Aladdin, WY 82710 | Oil Operator | Jul 1991 |
| 16 | Misahar Investments | Evergreen, CO 80439 | Oil Operator | Dec 1992 |
| 17 | Montex Exploration | Sugarland, TX 77478 | Oil Operator | Apr 2003 |
Production numbers shown above are only for Crook County, WY and for the production period listed.