Oil & Gas Companies in Grand County, UT
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | Mar/Reg Oil Company | Reno, NV 89511 | Oil & Gas Operator | Dec 2025 |
| 2 | Marathon Oil Company | Houston, TX 77252 | Oil & Gas Operator | Dec 2025 |
| 3 | Master Pet & Devel Co Inc | Grand Junction, CO 81503 | Oil & Gas Operator | Jul 1999 |
| 4 | McConnell, B L Operating | Fruita, CO 81521 | Oil & Gas Operator | Aug 1985 |
| 5 | Megadon Enterprises, Inc | Salt Lake City, UT 84121 | Oil Operator | May 2020 |
| 6 | Meridian Oil Inc. | Houston, TX 77210 | Oil & Gas Operator | Aug 1996 |
| 7 | Merrion & Bayless | Farmington, NM 87401 | Oil & Gas Operator | May 1982 |
| 8 | Monahan Rex | Sterling, CO 80751 | Oil & Gas Operator | Jun 2002 |
| 9 | Moose Mountain Divide #1, LLC | Roosevelt, UT 84066-1656 | Oil & Gas Operator | Jan 2026 |
| 10 | Mosbacher Production Co. | Casper, WY 82602 | Oil & Gas Operator | Aug 1984 |
| 11 | Murdoch Oil Co Inc | Bluff, UT 84512 | Oil & Gas Operator | Jun 2010 |
Production numbers shown above are only for Grand County, UT and for the production period listed.