Oil & Gas Companies

Company NameCompany LocationCompany TypeMost Recent Production
1401Cinco Oil & Gas, LLCDallas, TX 75204Oil & Gas OperatorOct 2025
1402Cincris Energy COil & Gas OperatorJun 1991
1403Cinder Production CompanyOil & Gas OperatorApr 2014
1404Cinnabar Energy, LTD.Fort Worth, TX 76107Oil & Gas OperatorMay 2018
1405Cinnabar Operating, LLCFort Worth, TX 76121Oil & Gas OperatorOct 2025
1406Cinnamon Creek Oil & Gas IncOil OperatorAug 2025
1407Cinron Energy, LLCArp, TX 75750Oil & Gas OperatorOct 2025
1408Cippele Resources Co.Longview, TX 75608Oil & Gas OperatorMay 1994
1409Circle "M" Energy Inc.Kilgore, TX 75662Oil & Gas OperatorAug 2003
1410Circle 9 Resources LLCOklahoma City, OK 73104Oil & Gas OperatorJun 2025
1411Circle B Oil & GasBowie, TX 76230Oil & Gas OperatorDec 2021
1412Circle C Oilfield Supply IncWetumka, OK 74883-0068Oil & Gas OperatorApr 2017
1413Circle C OperationsWinnsboro, TX 75494Oil OperatorOct 2025
1414Circle D Oil & Gas, Inc.Brownwood, TX 76801Oil & Gas OperatorOct 2025
1415Circle E Oil - EOil OperatorMay 1990
1416Circle H Oil CompanyBig Spring, TX 79721Oil & Gas OperatorApr 2020
1417Circle K EnterprisesOil & Gas OperatorAug 2023
1418Circle K Oil & Gas IncSand Springs, OK 74063Oil & Gas OperatorJun 2025
1419Circle Ridge Production, Inc.Graham, TX 76450Oil & Gas OperatorOct 2025
1420Circle T OilOil OperatorNov 2024
1421Circle W Oil & Gas CompanyPampa, TX 79066Oil & Gas OperatorOct 2025
1422Circle-S Energy, LLCMcKinney, TX 75071Oil & Gas OperatorOct 2025
1423Circleville Gas CoWesterville, OH 43081Oil & Gas OperatorDec 2004
1424Ciri Production CompanyGas OperatorMar 1994
1425Ciris Energy IncCentennial, CO 80112Gas OperatorDec 2016
1426Cirque Resources LPDenver, CO 80202Oil & Gas OperatorAug 2016
1427Cirrus Exploration CompanyProsper, TX 75078Oil & Gas OperatorOct 2025
1428Cirrus Production CompanyEnid, OK 73702Oil & Gas OperatorJun 2025
1429Cisco Operating LLCPlano, TX 75024Oil & Gas OperatorJun 2025
1430Cisco Petroleum, Inc.Oil & Gas OperatorOct 2010
1431Cisco Production Company, LLCVictoria, TX 77902Oil & Gas OperatorMay 2012
1432Citadel Exploration Inc.Oil OperatorJul 2025
1433Citadel Oil LLCEdmond, OK 73083Oil OperatorJun 2025
1434Citadel Production Company, Inc.Denver, CO 80201Oil OperatorSep 1996
1435Citation EnergyOil & Gas OperatorJul 1993
1436Citation Energy CompanyMarietta, OH 45750Oil & Gas OperatorDec 2024
1437Citation Oil & GOil & Gas OperatorDec 1996
1438Citation Oil & Gas Corp.Houston, TX 77269Oil & Gas OperatorOct 2025
1439Cities Serv Oil & Gas CorpOklahoma City, OK 73112Oil & Gas OperatorSep 1964
1440Cities Service CompanyOil & Gas OperatorMar 1983
1441Cities Service Oil & Gas CorpOil & Gas OperatorMar 1988
1442Cities Service Oil Co.Oil & Gas OperatorDec 1986
1443Cities Services CompanyOil & Gas OperatorMar 2008
1444Citizen Energy II LLCTulsa, OK 74103-3729Oil & Gas OperatorApr 2025
1445Citizen Energy III LLCDevner, CO 80202Oil & Gas OperatorJun 2025
1446Citmoco Services, Inc.Oil OperatorJan 1971
1447Citori Oil CompanyWichita Falls, TX 76301Oil & Gas OperatorNov 2004
1448Citori Oil Company, LLCWichita Falls, TX 76308Oil & Gas OperatorMay 2014
1449Citronelle Operating Co., LLCOil & Gas OperatorSep 1997
1450Citrus Energy CorporationCastle Rock, CO 80104Oil & Gas OperatorMar 2020
1451Cits BK & Trust Of SpringhillOil & Gas OperatorJun 1990
1452City & County Of DenverOil & Gas OperatorSep 2023
1453City Of AkronAkron, OH 44308Oil & Gas OperatorDec 2024
1454City Of BakerBaker, MT 59313Oil & Gas OperatorJun 2025
1455City Of BradyBrady, TX 76825Gas OperatorFeb 1998
1456City Of ChanuteChanute, KS 66720Oil OperatorFeb 1994
1457City Of Cuyahoga FallsCuyahoga Falls, OH 44221Oil & Gas OperatorDec 2024
1458City Of DumasDumas, TX 79029Gas OperatorOct 2025
1459City Of Garden City, KansasGarden City, KS 67846Gas OperatorJun 2025
1460City Of Hermosa BeachOil & Gas OperatorDec 2005
1461City Of Hugoton, KansasHugoton, KS 67951Gas OperatorJun 2025
1462City Of Huntington Beach (Fire Dept.)Oil & Gas OperatorAug 2025
1463City Of McLeanMcLean, TX 79057Gas OperatorOct 2025
1464City Of Newport BeachOil & Gas OperatorAug 2025
1465City Of Santa Fe SpringsOil OperatorDec 2007
1466City Of SatantaSatanta, KS 67870Gas OperatorJun 2025
1467City Of Sunray UtilitiesSunray, TX 79086Oil & Gas OperatorOct 2025
1468City Of White DeerWhite Deer, TX 79097Gas OperatorMay 2017
1469City Oil Corp. Oper. ForOil & Gas OperatorDec 1989
1470Civego, Inc.Oil & Gas OperatorJul 1994
1471Civic Energy CorporationColony, OK 73021Oil & Gas OperatorJun 2025
1472Civiletto, George & WendyFredonia, NY 14063Gas OperatorDec 2024
1473Civitas North LLCOil & Gas OperatorJul 2025
1474Civitas Permian Operating, LLCThe Woodlands, TX 77380Oil & Gas OperatorOct 2025
1475Civron Petroleum Res., LLCSan Antonio, TX 78229Oil & Gas OperatorOct 2025
1476CJ Oil IncMadison, KS 66860Oil OperatorJun 2025
1477CJR Operating LLCWister, OK 74966Gas OperatorJun 2025
1478CJRW Oil & GasMC Camey, TX 79752Oil OperatorOct 2025
1479CK OilOil OperatorMay 2025
1480CK Oil & Gas LLCHerington, KS 67449Oil & Gas OperatorMar 2025
1481CK Operating Company, LLCWichita Falls, TX 76308Oil OperatorOct 2025
1482CK ResourcesCleveland, OK 74020-0772Oil OperatorAug 2013
1483CK5 Services LLCZephyr, TX 76890Oil & Gas OperatorOct 2025
1484CKB CorporationBorger, TX 79008Oil & Gas OperatorAug 1997
1485CKT Energy LLCDallas, TX 75379Oil & Gas OperatorSep 2020
1486CL&F Operating LLCSpring, TX 77389Oil & Gas OperatorDec 2022
1487Cla-Mar Oil Company, LLCHays, KS 67601Oil OperatorDec 2019
1488Claassen Oil And Gas, Inc.Estes Park, CO 80517Oil & Gas OperatorJun 2025
1489Claborn JuliaOkmulgee, OK 74447-9781Oil & Gas OperatorMar 2022
1490Claco Oil CoArtesia, NM 88210Oil & Gas OperatorDec 2014
1491Claiborne-McDonald IncChickasha, OK 73018Oil OperatorJul 2007
1492Claibourn, Darrel R.Neodesha, KS 66757Oil OperatorOct 2011
1493Clair Oil, Inc.Russell, KS 67665Oil OperatorNov 2019
1494Clamp OperatingSan Antonio, TX 78264Oil & Gas OperatorApr 2002
1495Clamp Operating IncorporatedSan Antonio, TX 78264Oil & Gas OperatorMar 2011
1496Clapp Carl OCedar Vale, KS 67024Oil OperatorAug 2013
1497Clapp Oil LLCOil OperatorJun 2025
1498Clarco Gas Co., Inc.Westmont, IL 60559Oil OperatorDec 2011
1499Claremont CorporationTulsa, OK 74114Oil & Gas OperatorFeb 2017
1500Claremont EnergyGas OperatorDec 1993