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All Oil & Gas Companies
Oil & Gas Companies in Montana
Roosevelt County, MT Oil & Gas Companies
Oil & Gas Companies in Roosevelt County, MT
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Company Name
Company Location
Company Type
Most Recent Production
1
Vanguard Operating, LLC
Houston, TX 77057
Oil & Gas Operator
Jan 2021
2
Vecta Oil & Gas LTD
Dallas, TX 75235
Oil & Gas Operator
Jun 2026
Production numbers shown above are only for Roosevelt County, MT and for the production period listed.
Top Producing Companies in Roosevelt County, MT
Continental Resources, Inc.
Darrah Oil Company, LLC
Devon Energy Williston, L.L.C.
Digital Operating Company LLC
Foundation Energy Management, LLC
Granite Creek Energy LLC
Green Valley Operating, LLC
HK Eagle LLC
Kraken Operating, LLC
Missouri River Royalty Corporation
Oasis Petroleum North America LLC
Phoenix Operating LLC
Prima Exploration, Inc.
R3 Operating Corporation
Samson Oil & Gas USA Inc
Sinclair Oil & Gas Company
Slawson Exploration Company Inc
White Rock Oil & Gas, LLC
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Oil & Gas Companies in Williams County, ND