Oil & Gas Companies

Company NameCompany LocationCompany TypeMost Recent Production
1U R C COil & Gas OperatorJul 1991
2U S Drilling Company IncHoldenville, OK 74848-0913Oil OperatorAug 2016
3U S Energy Corp. Of Amer. Inc.Roanoke, TX 76262Oil & Gas OperatorMay 2019
4U S Exploraton Liq TrustOil & Gas OperatorSep 1994
5U S Steel Mining Company LLCPineville, WV 24874-0338Gas OperatorOct 2002
6U-N-I ExploratioOil & Gas OperatorDec 1990
7U-N-I Exploration & Development, Inc.Yates Center, KS 66783Oil & Gas OperatorJan 2003
8U. D. Man, Inc.San Antonio, TX 78212Oil OperatorMay 2019
9U. O. C., Inc.Oil OperatorSep 2018
10U. S. Oil & GasBakersfield, CA 93309Oil & Gas OperatorFeb 2018
11U. S. Operating, Inc.Dallas, TX 75252Oil & Gas OperatorMay 2019
12U.S. Capital Corp Of Am, Inc.Oil & Gas OperatorAug 1998
13U.S. Enercorp, LLCSan Antonio, TX 782091880Oil & Gas OperatorJul 2004
14U.S. Enercorp, LTD.San Antonio, TX 78209Oil & Gas OperatorMay 2019
15U.S. Energy Development CorpArlington, TX 76011Oil & Gas OperatorMay 2019
16U.S. Exploration CompanyOil & Gas OperatorAug 2003
17U.S. Sovereign Oil And Gas, Inc.Oil & Gas OperatorMay 2019
18U.S. Steel Mining Co., Inc.Gas OperatorJan 2000
19U.S.A. Plugging CompanyPearsall, TX 78061Oil & Gas OperatorMay 2019
20U1 Ranch OilWeesatche, TX 77993Oil & Gas OperatorMay 2019
21Uae Investco 1 (Estill), LLCRavenna, KY 40472Oil OperatorDec 2015
22Uae Investco 2 (Lee), LLCRavenna, KY 40472Oil OperatorDec 2015
23Ubetco, Inc.Rockdale, TX 76567Oil & Gas OperatorMay 2019
24Uhc New Mexico CorporationMidland, TX 79702Oil & Gas OperatorFeb 2007
25Uhc Petroleum CorporationRocksprings, TX 78880-3057Oil & Gas OperatorMay 2019
26Uhl, RobertBradford, PA 16701Oil & Gas OperatorDec 2017
27Uhl, Stephen L.Bradford, PA 16701Oil & Gas OperatorDec 2017
28Uhls, Jimmie J.Sedan, KS 67361Oil OperatorAug 2018
29Uinta Oil & GasRoosevelt, UT 84066Oil & Gas OperatorNov 1997
30Uinta-Taylor Fund, LTDRoosevelt, UT 84066Oil & Gas OperatorNov 2018
31Uintah Investors LLCOrem, UT 84097Oil & Gas OperatorApr 2019
32Ulatex Oil & Gas Inc.Oil & Gas OperatorDec 1998
33Ultra Oil & Gas, Inc.Austin, TX 78738Oil & Gas OperatorMay 2019
34Ultra Petroleum (U.S.A.), Inc.Oil & Gas OperatorSep 2003
35Ultra Resources IncHouston, TX 77060Oil & Gas OperatorDec 2019
36Ultramar Oil & Gas LTDHouston, TX 77060Oil & Gas OperatorJan 1993
37Ultramar Production CompanyOil & Gas OperatorDec 1991
38Ulysses, City OfUlysses, KS 67880Gas OperatorFeb 2019
39Umberham Oil Company IncDrumright, OK 74030-0363Oil OperatorJul 2017
40Umc Petroleum CorporationHouston, TX 77002Oil & Gas OperatorFeb 2015
41Umma Resources, LLCPortland, TX 78374Gas OperatorMay 2019
42Ummel'S Tank SerOil OperatorSep 1994
43Unc Texas IncorpGas OperatorMay 1987
44Underbrink OilPleasanton, TX 78064Oil OperatorMay 2019
45Underground Energy, Inc.Pismo Beach, CA 93448-0761Oil & Gas OperatorFeb 2018
46Underwood Oil & GasOil & Gas OperatorDec 2019
47Underwood, Donald D. Dba Mustang Oil CoSalem, WV 26426Oil & Gas OperatorDec 2017
48Underwood, JimOil & Gas OperatorMar 2018
49Underwood, Rip CAmarillo, TX 79101Gas OperatorSep 1963
50Unger Well Drilling CorpDennison, OH 44621Oil & Gas OperatorDec 1999
51Uni Production Company, Inc.Oil & Gas OperatorApr 1988
52Unicorn Drilling IncOil OperatorDec 1998
53Unicorn Energy, Inc.Oil & Gas OperatorMay 2019
54Unicorn Oil & Gas Co IncDorset, OH 44032Oil & Gas OperatorDec 1993
55Unifid Oil & Gas Corp.Oil & Gas OperatorMar 1994
56Unified Oil & Gas Corp.Snyder, TX 79550Oil OperatorMay 2019
57UnioilOil & Gas OperatorDec 2004
58Union Camp CorpDover, OH 44622Oil & Gas OperatorDec 2002
59Union City Boro Muni Auth Erie CntyUnion City, PA 16438-1326Gas OperatorDec 2018
60Union Crude CompanyGas OperatorApr 2018
61Union Crude Operating Co.Baytown, TX 77521Oil OperatorAug 2003
62Union Development Co. Inc.Oil & Gas OperatorDec 1992
63Union Diversified Investments, Inc.Gas OperatorJul 2018
64Union Diversified, Inc.Gas OperatorDec 2008
65Union Drilling &Management IncGas OperatorFeb 1991
66Union Expl. Partners, LTD. -MobileMobile, AL 36616Oil & Gas OperatorJun 1986
67Union Exploration Partners, LTD.Oil & Gas OperatorOct 2016
68Union Gas Corp. (Union Gas Co.)Charleston, WV 25338-0000Oil & Gas OperatorDec 2017
69Union Gas Operating CompanyHouston, TX 77014Oil & Gas OperatorMay 2019
70Union Oil CoDanville, OH 43014Oil & Gas OperatorDec 2014
71Union Oil Co Of CaliforniaMidland, TX 79706Oil & Gas OperatorMay 2019
72Union Operating CorpGolden, CO 80401Oil OperatorDec 2015
73Union Pacific Austin Chalk Co.Oil & Gas OperatorJan 2001
74Union Pacific ReOil & Gas OperatorDec 1996
75Union Pacific ResourOil & Gas OperatorApr 2002
76Union Pacific Resources Co.Houston, TX 77251-1330Oil & Gas OperatorAug 2013
77Union Petro IncUniontown, KY 42461Oil OperatorDec 2014
78Union PetrochemicalOil & Gas OperatorDec 1982
79Union Producing Co.Oil & Gas OperatorDec 1992
80Union Royalty, Inc.Oil & Gas OperatorJul 2014
81Union Seaboard CorporationHouston, TX 77024Oil & Gas OperatorMar 2008
82Union Springs Central School DistrictUnion Springs, NY 13160Gas OperatorDec 2017
83Union Texas PetroleumHouston, TX 77252Oil & Gas OperatorOct 1991
84Union Texas Petroleum Corp.Oil & Gas OperatorOct 2006
85Union Valley Petroleum CorpEnid, OK 73701Oil & Gas OperatorFeb 2019
86Unionville ExploOil OperatorJul 1984
87Unit Manager, Citronelle UnitOil & Gas OperatorSep 2001
88Unit Operations IncOklahoma City, OK 73116Gas OperatorDec 2012
89Unit Petroleum CompanyTulsa, OK 74170Oil & Gas OperatorDec 2019
90United CompanyOil & Gas OperatorJun 1995
91United Energy & Expl IncAda, OK 74821-2449Oil & Gas OperatorJun 2017
92United Energy & Exploration LLCAda, OK 74821Oil & Gas OperatorMay 2019
93United Energy CorporationSan Antonio, TX 78209Oil & Gas OperatorMay 2019
94United Energy IncorporatedWichita, KS 67230Oil & Gas OperatorDec 2002
95United Energy Operating, LLCEdmond, OK 73083Oil & Gas OperatorMay 2019
96United Energy Partners, Inc.Oil & Gas OperatorMar 2008
97United Investment GroupOil OperatorNov 2004
98United MeridianOil OperatorDec 1992
99United Natural Gas LLCOil & Gas OperatorDec 2019
100United O&G/Atlee MillerMillersburg, OH 44654Oil & Gas OperatorDec 1985