Oil & Gas Companies in Montana

Company NameCompany LocationCompany TypeMost Recent Production
1H & R Well Services, Inc.FT Morgan, CO 80701Oil & Gas OperatorApr 2015
2Hallwood Petroleum, Inc.Midland, TX 79701Oil & Gas OperatorJan 2025
3Hammond Valley Colony, Inc.Harlowton, MT 59036Gas OperatorApr 2025
4Hardrock Oil CompanyGreat Falls, MT 59403Gas OperatorApr 2025
5Hawkins, Robert S.Kevin, MT 59454Oil OperatorJun 2018
6Hawley & DesimonConrad, MT 59425Oil OperatorMar 2025
7Hawley Hydrocarbons, Merrill&Carol Hawley DbaGreat Falls, MT 59405Oil OperatorApr 2025
8Hawley Oil CompanyConrad, MT 59425-9802Oil OperatorDec 2024
9Headington Oil Company LLCDallas, TX 75204Oil & Gas OperatorApr 2016
10Helis Oil & Gas Company, L.L.C.New Orleans, LA 70130Oil & Gas OperatorOct 2023
11Hell Creek Crude LLCWinnett, MT 59087Oil OperatorMay 2025
12Highline Exploration, Inc.Tuscaloosa, AL 35402Gas OperatorNov 2020
13Hinto Energy, LLCEdwards, CO 81632Oil OperatorMar 2017
14Hofland, James D.Kevin, MT 59454Oil & Gas OperatorMay 2025
15Home-Stake Oil & Gas CompanyPlano, TX 75093Oil & Gas OperatorFeb 2025
16Howell Petroleum CorporationHouston, TX 77251Oil & Gas OperatorOct 2015
17HR Energy LLCShelby, MT 59474Oil & Gas OperatorApr 2025
18HRC Operating, LLCDenver, CO 80202Oil & Gas OperatorNov 2017
19HS Resources, Inc.Denver, CO 80202Oil & Gas OperatorDec 2005
20Huber J M CorpEdison, NJ 08837Oil & Gas OperatorJul 2025
21Hugoton Energy CorporationOklahoma City, OK 73113Oil & Gas OperatorDec 2019
22Humble Oil & Refining Co.Houston, TX 77252Oil & Gas OperatorJan 2000
23Huntington Energy LLCNichols Hill, OK 73116Oil & Gas OperatorJul 2025
24Huntington Resources IncTulsa, OK 74103Oil & Gas OperatorOct 2006