Oil & Gas Companies

Company NameCompany LocationCompany TypeMost Recent Production
1O & G Energy, Inc.Abilene, TX 79608Oil & Gas OperatorOct 1996
2O & O Operators, LLC.Midland, TX 79708Oil & Gas OperatorMar 2024
3O G & EOklahoma City, OK 73124-0300Oil & Gas OperatorFeb 2014
4O H BerryMidland, TX 79702Oil & Gas OperatorFeb 2003
5O Hill Enterprises, Inc.La Grange, TX 78945Oil & Gas OperatorJan 2014
6O I L Energy CorpOil & Gas OperatorOct 2017
7O I L Niagaran LLCOil & Gas OperatorMay 2017
8O K Swabbing IncHennessey, OK 73742-0835Oil & Gas OperatorDec 2023
9O S & J OperatinOil OperatorNov 1984
10O S & S Oil CompanyElectra, TX 76360Oil & Gas OperatorJan 2018
11O&Apos;Brien Energy Resources CorpOil & Gas OperatorDec 2022
12O&G Investments Inc.Runge, TX 78151Oil & Gas OperatorFeb 2003
13O'Bar Operating Co., Inc.Longview, TX 75604Oil & Gas OperatorMar 2024
14O'Benco, Inc.Shreveport, LA 71136Oil & Gas OperatorMar 2024
15O'Blue Corp.Kerrville, TX 78028Oil & Gas OperatorMar 1998
16O'Boyle Energy CorporationOil OperatorFeb 1991
17O'Brien Energy CompanyShreveport, LA 71136Oil & Gas OperatorSep 2019
18O'Brien Energy Resources CorpPortsmouth, NH 03801Oil & Gas OperatorMar 2024
19O'Brien Oil CorporationGuthrie, OK 73044-3154Oil & Gas OperatorDec 2023
20O'Brien Oil LLCGuthrie, OK 73044-3154Oil & Gas OperatorApr 2020
21O'Brien Operating CompanyOil & Gas OperatorDec 2004
22O'Brien Resources LLCShreveport, LA 71136Oil OperatorNov 2017
23O'Brien, George H. Jr.Midland, TX 79701Oil & Gas OperatorJun 1994
24O'Brien, Mae Or Brett StricklandBelington, WV 26250-0076Oil & Gas OperatorDec 2021
25O'Brien-SillOil & Gas OperatorDec 2023
26O'Connell, James P.Vacaville, CA 95687Oil OperatorNov 2009
27O'Connor & Hewitt, LTD.Victoria, TX 77901Oil & Gas OperatorJun 1998
28O'Connor Energy Management, LLCVictoria, TX 77902Oil OperatorMar 2024
29O'Dell, MitchellCross Plains, TX 76443Oil & Gas OperatorMar 2024
30O'Donnell Bill CTulsa, OK 74135-4241Oil & Gas OperatorOct 2014
31O'Donnell Oil LLCOil & Gas OperatorNov 2023
32O'Donohoe, JackWichita Falls, TX 76301Oil & Gas OperatorMay 2002
33O'Gorman, Brendan & Wheeler, AnneNorth Collins, NY 14111Gas OperatorDec 2022
34O'Gorman, KevinEden, NY 14057Gas OperatorDec 2022
35O'Hare Energy CoOil OperatorDec 1983
36O'Hern Morris DMounds, OK 74047-5163Oil & Gas OperatorSep 2016
37O'Leary'S Oil & Gas Inc.Arcadia, FL 34266Oil & Gas OperatorMay 2008
38O'Malley Production Co. Inc.Oil & Gas OperatorApr 1988
39O'Meara LLCOil & Gas OperatorOct 2022
40O'Meara, Inc.Oil & Gas OperatorDec 2006
41O'Neal Cattle Co.Pampa, TX 79066Gas OperatorMar 2024
42O'Neal Oil & Gas CoFort Worth, TX 76107-1479Oil & Gas OperatorJan 2024
43O'Neal Oil CompanyNocona, TX 76255Oil & Gas OperatorMar 2024
44O'Neal Operating CompanyWichita Falls, TX 76307Oil & Gas OperatorDec 1999
45O'Neal, LindellNocona, TX 76255Oil & Gas OperatorDec 2023
46O'Neil Properties LTDMidland, TX 79702Oil & Gas OperatorJun 2015
47O'Neil, PatWichita Falls, TX 76308Oil & Gas OperatorNov 2005
48O'Neil, Pat Estate OfWichita Falls, TX 76308Oil OperatorMar 2024
49O'Neill Properties, LTD.Midland, TX 79702Oil & Gas OperatorMar 2024
50O'Ryan Oil And GasOdessa, TX 79768Oil & Gas OperatorMar 2024
51O'Sand Production, Inc.Tomball, TX 77377Oil & Gas OperatorAug 2003
52O'Sullivan & Scully, Inc.Oil & Gas OperatorOct 1994
53O'Sullivan Oil & Gas Co., Inc.Houston, TX 77002Oil & Gas OperatorSep 2000
54O'Tool Oil & Gas, LLCDallas, TX 75219Oil & Gas OperatorMar 2024
55O. B. And Keith WhatleyOil OperatorJul 1993
56O. B. BeckOil OperatorFeb 1991
57O. B. MobleyOil & Gas OperatorJul 1989
58O. B. Mobley, Et AlOil OperatorJul 1989
59O. B. WhatleyOil OperatorJul 1993
60O. D. MaybrierOil OperatorDec 2011
61O. F. H., Inc.Oil OperatorMay 1990
62O. G., Inc.Oil & Gas OperatorNov 1992
63O. H. B. Inc.San Angelo, TX 76902Oil & Gas OperatorSep 2019
64O. H. M. OperatingPampa, TX 79065Oil & Gas OperatorMar 2024
65O. O. CummingsGas OperatorJan 1999
66O.B. Whatley Oil Company, Inc.Oil OperatorFeb 2013
67O.B., Keith & Owen B. WhatleyOil OperatorJul 1989
68O.G.O. RefiningLuling, TX 78648Oil & Gas OperatorJun 2013
69O.G.P. Operating, Inc.Dallas, TX 75231Oil & Gas OperatorMar 2024
70O.I.L. Energy, Inc.Oil & Gas OperatorDec 1984
71O.T. OilKilgore, TX 75663Oil OperatorMar 2024
72Oahe Oil CompanyTexline, TX 79087Oil & Gas OperatorMay 2004
73Oak Dale Drilling CoLogan, OH 43138-1851Oil & Gas OperatorDec 2015
74Oak Energy, LLCHouston, TX 77027Oil & Gas OperatorMar 2024
75Oak Grove Resources, LLCGas OperatorSep 2023
76Oak Hill Petroleum CorporationOklahoma City, OK 73116-5627Oil & Gas OperatorDec 2023
77Oak Hills Drilling & Oper., LLCHoldenville, OK 74848Oil & Gas OperatorMay 2013
78Oak Hills Energy IncHoldenville, OK 74848-0470Oil & Gas OperatorSep 2014
79Oak Prairie Operations, LLCThe Woodlands, TX 77381Oil & Gas OperatorMar 2024
80Oak Resources IncTulsa, OK 74153Oil & Gas OperatorAug 2013
81Oak Ridge LLCWellsville, KS 66092Oil OperatorDec 2019
82Oak Tree Natural Res LLCOklahoma City, OK 73120-5065Oil & Gas OperatorMar 2015
83Oak Valley Operating, LLCThe Woodlands, TX 77380Oil & Gas OperatorJun 2015
84Oak Valley SWD LLCOil OperatorAug 2022
85Oakes Gas Co IncKane, PA 16735-3905Gas OperatorDec 2019
86Oakfield Energy LLCOil OperatorJun 2019
87Oakland CorporationShreveport, LA 71135Oil & Gas OperatorDec 1981
88Oakland Petroleum Oper Co., Inc.Kilgore, TX 75663Oil & Gas OperatorMar 2024
89Oakley Oil & Gas, L.L.C.Oil & Gas OperatorMar 2012
90Oakmont CCOakmont, PA 15139-1135Gas OperatorDec 2023
91Oakmont Oil And GasGraham, TX 76450Oil OperatorMar 2024
92Oakridge Energy, Inc.Wichita Falls, TX 76302Oil & Gas OperatorMar 2024
93Oakridge Oil And Gas, LPJacksboro, TX 76458Oil & Gas OperatorMar 2024
94Oaks Petroleum IOil OperatorJul 1987
95Oaktree Oil CompanyAlbany, TX 76430Oil & Gas OperatorMar 2024
96Oakwood Resources, Inc.Dallas, TX 75374Oil & Gas OperatorMay 1998
97Oasis Energy Resources LLCOil & Gas OperatorDec 2023
98Oasis Operating, Inc.Lubbock, TX 79404Oil & Gas OperatorNov 2020
99Oasis Petroleum North America LLCHouston, TX 77002Oil & Gas OperatorJan 2024
100Oasis Petroleum Permian LLCHouston, TX 77002Oil & Gas OperatorMar 2024