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 OperatorFeb 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 OperatorFeb 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 OperatorFeb 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 OperatorFeb 2019
15U.S. Energy Development CorpArlington, TX 76011Oil & Gas OperatorFeb 2019
16U.S. Exploration CompanyOil & Gas OperatorAug 2003
17U.S. Sovereign Oil And Gas, Inc.Oil & Gas OperatorFeb 2019
18U.S. Steel Mining Co., Inc.Gas OperatorJan 2000
19U.S.A. Plugging CompanyPearsall, TX 78061Oil & Gas OperatorFeb 2019
20U1 Ranch OilWeesatche, TX 77993Oil & Gas OperatorFeb 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 OperatorFeb 2019
24Uhc New Mexico CorporationMidland, TX 79702Oil & Gas OperatorFeb 2007
25Uhc Petroleum CorporationRocksprings, TX 78880-3057Oil & Gas OperatorFeb 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 OperatorJan 2019
32Ulatex Oil & Gas Inc.Oil & Gas OperatorDec 1998
33Ultra Oil & Gas, Inc.Austin, TX 78738Oil & Gas OperatorFeb 2019
34Ultra Petroleum (U.S.A.), Inc.Oil & Gas OperatorSep 2003
35Ultra Resources IncHouston, TX 77060Oil & Gas OperatorSep 2018
36Ultramar Oil & Gas LTDHouston, TX 77060Oil & Gas OperatorJan 1993
37Ultramar Production CompanyOil & Gas OperatorDec 1991
38Ulysses, City OfUlysses, KS 67880Gas OperatorNov 2018
39Umberham Oil Company IncDrumright, OK 74030-0363Oil OperatorJul 2017
40Umc Petroleum CorporationHouston, TX 77002Oil & Gas OperatorFeb 2015
41Umma Resources, LLCPortland, TX 78374Gas OperatorFeb 2019
42Ummel'S Tank SerOil OperatorSep 1994
43Unc Texas IncorpGas OperatorMay 1987
44Underbrink OilPleasanton, TX 78064Oil OperatorFeb 2019
45Underground Energy, Inc.Pismo Beach, CA 93448-0761Oil & Gas OperatorFeb 2018
46Underwood, Donald D. Dba Mustang Oil CoSalem, WV 26426Oil & Gas OperatorDec 2017
47Underwood, JimOil & Gas OperatorMar 2018
48Underwood, Rip CAmarillo, TX 79101Gas OperatorSep 1963
49Unger Well Drilling CorpDennison, OH 44621Oil & Gas OperatorDec 1999
50Uni Production Company, Inc.Oil & Gas OperatorApr 1988
51Unicorn Energy, Inc.Oil & Gas OperatorFeb 2019
52Unicorn Oil & Gas Co IncDorset, OH 44032Oil & Gas OperatorDec 1993
53Unifid Oil & Gas Corp.Oil & Gas OperatorMar 1994
54Unified Oil & Gas Corp.Snyder, TX 79550Oil OperatorFeb 2019
55Union Camp CorpDover, OH 44622Oil & Gas OperatorDec 2002
56Union City Boro Muni Auth Erie CntyUnion City, PA 16438-1326Gas OperatorDec 2018
57Union Crude CompanyGas OperatorApr 2018
58Union Crude Operating Co.Baytown, TX 77521Oil OperatorAug 2003
59Union Development Co. Inc.Oil & Gas OperatorDec 1992
60Union Diversified Investments, Inc.Gas OperatorJul 2018
61Union Diversified, Inc.Gas OperatorDec 2008
62Union Drilling &Management IncGas OperatorFeb 1991
63Union Expl. Partners, LTD.Oil & Gas OperatorOct 2016
64Union Expl. Partners, LTD. -MobileMobile, AL 36616Oil & Gas OperatorJun 1986
65Union Gas Corp. (Union Gas Co.)Charleston, WV 25338-0000Oil & Gas OperatorDec 2017
66Union Gas Operating CompanyHouston, TX 77014Oil & Gas OperatorFeb 2019
67Union Oil CoDanville, OH 43014Oil & Gas OperatorDec 2014
68Union Oil Co Of CaliforniaMidland, TX 79706Oil & Gas OperatorFeb 2019
69Union Operating CorpGolden, CO 80401Oil OperatorDec 2015
70Union Pacific Austin Chalk Co.Oil & Gas OperatorJan 2001
71Union Pacific ReOil & Gas OperatorDec 1996
72Union Pacific ResourOil & Gas OperatorApr 2002
73Union Pacific Resources Co.Houston, TX 77251-1330Oil & Gas OperatorAug 2013
74Union Petro IncUniontown, KY 42461Oil OperatorDec 2014
75Union PetrochemicalOil & Gas OperatorDec 1982
76Union Producing Co.Oil & Gas OperatorDec 1992
77Union Royalty, Inc.Oil & Gas OperatorJul 2014
78Union Seaboard CorporationHouston, TX 77024Oil & Gas OperatorMar 2008
79Union Springs Central School DistrictUnion Springs, NY 13160Gas OperatorDec 2017
80Union Texas PetroleumHouston, TX 77252Oil & Gas OperatorOct 1991
81Union Texas Petroleum Corp.Oil & Gas OperatorOct 2006
82Union Valley Petroleum CorpEnid, OK 73701Oil & Gas OperatorDec 2018
83Unionville ExploOil OperatorJul 1984
84Unit Manager, Citronelle UnitOil & Gas OperatorSep 2001
85Unit Operations IncOklahoma City, OK 73116Gas OperatorDec 2012
86Unit Petroleum CompanyTulsa, OK 74170Oil & Gas OperatorFeb 2019
87United CompanyOil & Gas OperatorJun 1995
88United Energy & Expl IncAda, OK 74821-2449Oil & Gas OperatorJun 2017
89United Energy & Exploration LLCAda, OK 74821Oil & Gas OperatorFeb 2019
90United Energy CorpSan Antonio, TX 78209Oil & Gas OperatorFeb 2019
91United Energy Operating, LLCEdmond, OK 73083Oil & Gas OperatorFeb 2019
92United Energy Partners, Inc.Oil & Gas OperatorMar 2008
93United Energy, Inc.Wichita, KS 67230Oil & Gas OperatorDec 2002
94United Fuel Gas CoOil & Gas OperatorDec 2013
95United Investment GroupOil OperatorNov 2004
96United MeridianOil OperatorDec 1992
97United O&G/Atlee MillerMillersburg, OH 44654Oil & Gas OperatorDec 1985
98United Oil & GasOil OperatorFeb 1988
99United Oil & Minerals L. P.Oil & Gas OperatorJun 2003
100United Oil & Minerals, Inc.West Lake Hills, TX 78746Oil & Gas OperatorJan 2001