Oil & Gas Companies in Montana

Company NameCompany LocationCompany TypeMost Recent Production
1R & A Oil, Inc.Billings, MT 59105Oil & Gas OperatorJul 2025
2R & B Energy, LLCShelby, MT 59474Oil OperatorJul 2025
3R & J Production, Inc.Laurel, MT 59044Oil OperatorMar 2006
4R & N Associates,Etal Glen Neubert, AgentDallas, TX 75244-5100Oil OperatorSep 2005
5R.C.S. Oil, Inc.Valier, MT 59486Oil OperatorJul 2025
6R3 Operating CorporationDenver, CO 80222Oil & Gas OperatorNov 2025
7Ramhorn Energy, LLCGreen River, WY 82935Oil & Gas OperatorSep 2025
8Ranch Oil CompanyWest Linn, OR 97068Oil & Gas OperatorOct 2025
9Ranck Oil CompanyCut Bank, MT 59427Oil & Gas OperatorSep 2025
10Rankin, PaulBridgeville, PA 15017Oil & Gas OperatorJun 2016
11Redstone Gas Partners LLCDenver, CO 80202Gas OperatorMar 2001
12Remuda Energy Development LLCBillings, MT 59104Oil & Gas OperatorSep 2025
13Reserve Operating Corp.Houston, TX 77040Oil & Gas OperatorNov 2025
14Retamco Operating IncRed Lodge, MT 59068Oil & Gas OperatorSep 2025
15Richardson Operating CompanyDenver, CO 80237Oil & Gas OperatorSep 2025
16Ridge Oil & Gas, LLCPlano, TX 75024Oil & Gas OperatorSep 2025
17Rim Operating, Inc.Englewood, CO 80112Oil & Gas OperatorNov 2025
18Rimrock ColonySunburst, MT 59482Gas OperatorAug 2025
19Rimrock Oil CompanyKalispell, MT 59901Oil & Gas OperatorDec 2023
20Rincon Oil & Gas LLCArvada, CO 80005Gas OperatorJun 2022
21Ritchie Exploration, Inc.Wichita, KS 67278Oil & Gas OperatorJun 2025
22Ritter, Laber & Associates, Inc.Williston, ND 58802Oil & Gas OperatorAug 2025
23Rme Petroleum CompanyHouston, TX 77251Oil & Gas OperatorNov 2016
24Robert Hawkins IncKevin, MT 59454Oil & Gas OperatorSep 2025
25Robinson Oil Company, LLCBillings, MT 59103Gas OperatorDec 2015
26Rock Creek Oil, Inc.Dallas, TX 75225Oil & Gas OperatorNov 2019
27Rocky Mountain Operating Co IncLittleton, CO 80121Oil & Gas OperatorDec 2011
28Roland Oil And GasCut Bank, MT 59427Oil OperatorFeb 2023
29Rosetta Resources Operating LPSan Antonio, TX 78216Oil & Gas OperatorNov 2025