Oil & Gas Companies in California

Company NameCompany LocationCompany TypeMost Recent Production
1H & L OperatorsOil & Gas OperatorDec 2002
2H & O Oil Co.Oil & Gas OperatorDec 1989
3H & R Oil CompanyOil & Gas OperatorDec 2000
4H. O. Strickler OperatorOil & Gas OperatorDec 1993
5H. T. Hilliard & Co.Oil & Gas OperatorDec 1999
6H. W. Reynolds Jr.Gas OperatorDec 1984
7H.L. Hall & Sons LLCOil & Gas OperatorDec 2011
8H.T. Olsen Oil & Gas OperationsOil & Gas OperatorSep 2024
9Hamilton Brothers Oil Co.Houston, TX 77057Oil & Gas OperatorMar 2015
10Harcor Energy Inc.Gas OperatorDec 1999
11Harry FederOil & Gas OperatorDec 1999
12Harter Energy Inc.Tulsa, OK 74105Oil & Gas OperatorAug 2024
13Hartley Natural Resource DevelopmentOil & Gas OperatorAug 2024
14Harvest Petroleum Inc.Frisco, TX 75033Oil & Gas OperatorNov 2024
15Hathaway CompanyOil & Gas OperatorAug 2024
16Hathaway LLCOil & Gas OperatorSep 2024
17Haussler Farms Inc.Oil OperatorDec 1992
18Havens Oil CompanyEarly, TX 76803Oil & Gas OperatorAug 2024
19HDT Inc.Oil & Gas OperatorSep 2024
20Headington Oil CompanyDallas, TX 75231Oil & Gas OperatorDec 2016
21Hellman Properties LLCOil & Gas OperatorSep 2024
22Henry And Jane FongOil OperatorDec 1989
23Heritage Oil CompanyNorman, OK 73070Oil & Gas OperatorJul 2008
24Herley Olive Holdings LLCOil & Gas OperatorSep 2024
25Herley PetroleumOil & Gas OperatorDec 1997
26Herley-Kelley LLCOil & Gas OperatorSep 2024
27Herlindah GallegosOil OperatorDec 2007
28Hershey Oil CorporationSeminole, TX 79360Oil & Gas OperatorJul 1992
29Hexadyne Energy Corp.Oil & Gas OperatorDec 2013
30Hickory-National Co.Oil OperatorDec 1986
31Hilliard Oil & Gas IncNew Orleans, LA 70112Oil & Gas OperatorMay 2001
32Hillside Oil PartnersOil & Gas OperatorDec 1999
33Hiwa Petroleum Corp.Oil & Gas OperatorOct 2024
34Hoag Memorial Hospital PresbyterianGas OperatorSep 2024
35Hoc Ca LLCOil & Gas OperatorAug 2024
36Holmes Western Oil CorporationOil & Gas OperatorSep 2024
37Horizon Operating Co.Oil & Gas OperatorDec 1995
38Howard E. Caywood Inc.Oil & Gas OperatorSep 2024
39Hoyt Energy L.L.C.Oil OperatorSep 2024
40Hrubetz Oil Co.Dallas, TX 75225Oil OperatorSep 1986
41Hubl/HarbinOil OperatorDec 1994
42Hunt EnterprisesOil & Gas OperatorAug 2024
43Hunter Edison Oil Development Limited PartnershipOil & Gas OperatorSep 2024
44Huntington Beach CompanyOil & Gas OperatorDec 1998
45Huntington Beach Pacific Coast Enterprises LLCOil & Gas OperatorJan 2018
46Huntington Signal Oil CompanyOil & Gas OperatorDec 1997
47Husky Oil CompanyCody, WY 82414Oil & Gas OperatorDec 1984
48Hvi Cat Canyon Inc.Oil & Gas OperatorAug 2024