Oil & Gas Companies

Company NameCompany LocationCompany TypeMost Recent Production
401Hardey Production CompanyOil OperatorDec 1998
402Hardin Energy Co., Inc.Bigfoot, TX 78005Oil OperatorOct 2025
403Hardin Hanley EZanesville, OH 43701Oil & Gas OperatorDec 1995
404Hardin Oil Co.Oil OperatorDec 2019
405Hardin ProductionsOkemah, OK 74859Oil & Gas OperatorDec 2006
406Hardin, W.V. EstateSan Antonio, TX 78258Oil & Gas OperatorApr 2002
407Harding & Shelton IncOklahoma City, OK 73104-2410Oil & Gas OperatorJun 2025
408Harding And Shelton Exploration LLCOklahoma City, OK 73101-1557Oil & Gas OperatorJun 2025
409Harding CompanyDallas, TX 75244Oil & Gas OperatorJan 2015
410Harding Exploration, Inc.Wichita Falls, TX 76308Oil & Gas OperatorDec 2016
411Harding Well Service Co.Coahoma, TX 79511Oil & Gas OperatorAug 2003
412Hardrock Oil CompanyGreat Falls, MT 59403Gas OperatorJun 2025
413Hardrock Operating Company, Inc.Fort Worth, TX 76161Oil & Gas OperatorOct 2025
414Hardrock Resources Inc.Winters, TX 79567Oil & Gas OperatorOct 2025
415Hardway Prod & Operating, LLCAbilene, TX 79608Oil & Gas OperatorAug 2016
416Hardwick Oil CompanySugar Land, TX 77478Oil & Gas OperatorNov 2014
417Hardwick, Mark P. Inc.Midland, TX 79702Oil & Gas OperatorNov 1994
418Hardwick, Ross H. Oil CompanyDevine, TX 78016Oil & Gas OperatorOct 2025
419Hardy And Hardy Consulting LLCOil & Gas OperatorJul 2025
420Hardy Oil & Gas USA Inc.Houston, TX 77079Oil & Gas OperatorJun 1996
421Hardy Ranch, Inc.Henderson, TX 75654Oil & Gas OperatorOct 2025
422Hardy Salt Co.Oil & Gas OperatorApr 1986
423Hargis Exploration & Prod., Inc.Weatherford, TX 76086Oil & Gas OperatorJul 1996
424Hargraves DaughtersOil OperatorMar 1992
425Hargraves ElstonPonca City, OK 74604Oil & Gas OperatorJul 2003
426Hargraves Production, LLCOil OperatorJan 2025
427Hargus CurtisMacomb, OK 74852-8508Oil OperatorMay 2017
428Hargus Irrevocable TrustTecumseh, OK 74873-0590Oil OperatorApr 2014
429Haring Energy CompanyTuleta, TX 78162Oil & Gas OperatorMar 2003
430Harken Exploration CompanyHouston, TX 77079Oil & Gas OperatorMar 2008
431Harken Southwest CorpDallas, TX 752612007Oil & Gas OperatorFeb 2001
432Harkey Energy Inc.Odessa, TX 79762Oil & Gas OperatorFeb 2020
433Harkins & Co.Oil & Gas OperatorOct 1986
434Harkins And Co., Et AlOil & Gas OperatorDec 1980
435Harleton Oil & Gas Inc.Tyler, TX 75710Oil & Gas OperatorOct 2025
436Harley Drilling & Producing LTDBurbank, OH 44214Oil & Gas OperatorDec 2024
437Harlo Oil CompanOil OperatorDec 1994
438Harlow Corporation, TheAmarillo, TX 79101Oil & Gas OperatorApr 2014
439Harlow Enterprises LLCArtesia, NM 88210Oil & Gas OperatorJul 2025
440Harman Operating Company, Inc.Tyler, TX 75702Oil & Gas OperatorDec 2007
441Harmel And Shawver Oil LLCWichita Falls, TX 76310Oil OperatorOct 2025
442Harmon O G LLCGraysville, OH 45734Oil & Gas OperatorDec 2024
443Harmon, C. E. Oil, Inc.Tulsa, OK 74136Oil & Gas OperatorOct 2019
444Harmonia Petroleum CorporationMissouri City, TX 77459Oil & Gas OperatorMay 2017
445Harmons Well ServiceGraysville, OH 45734Oil & Gas OperatorDec 2019
446Harmony Drilling Company, Inc.Denver, CO 80222Oil & Gas OperatorNov 2016
447Harmony Exploration, Inc.College Sta, TX 77842Oil & Gas OperatorOct 2025
448Harmony Oil & Gas Co IncReno, NV 89509Oil OperatorDec 1994
449Harmony Producing Co IncOil & Gas OperatorDec 1995
450Harms PetroleumOil & Gas OperatorMay 1991
451Harms, H. Allan Petroleum Co., Inc.Great Bend, KS 67530Oil OperatorApr 1999
452Harms, Vance N.Talpa, TX 76882Oil & Gas OperatorMar 2016
453Harnetty Francis Dba Harnetty Oil & GasJunction City, OH 43748Oil & Gas OperatorDec 2019
454Harold G Raper Family TrustMansfield, TX 76063-1667Oil OperatorMay 2023
455Harold H. HollensheadOil & Gas OperatorMay 2002
456Harold M Root FoundationOil OperatorJun 2025
457Harold R ElkinPunxsutawney, PA 15767-7922Oil & Gas OperatorDec 2016
458Harp Peggy ASeminole, OK 74868-2284Oil & Gas OperatorMar 2024
459Harp, Stephen J.Fredonia, NY 14063Gas OperatorDec 2024
460Harpel John P JrFT. Collins, CO 80525Oil & Gas OperatorMay 1998
461Harper Crosby Holdings, LLCWeston, WV 26452Oil & Gas OperatorDec 2024
462Harper Hefte, Inc.Corpus Chrsti, TX 78410Oil & Gas OperatorOct 2025
463Harper Joe Howard Dba J H Field ServiceNowata, OK 74048-9704Oil & Gas OperatorJul 2025
464Harper Oil And Gas, LLCPratt, KS 67124Oil & Gas OperatorJun 2025
465Harper Oil Co.Denver, CO 80217Oil & Gas OperatorJun 2025
466Harper Production, LLCSpearman, TX 79081Oil & Gas OperatorOct 2025
467Harper, ClintWoodson, TX 76491Oil & Gas OperatorOct 2025
468Harper, Mr. WilliamClyde, NY 14433Gas OperatorDec 2023
469Harper, WayneDallas, TX 75206Oil & Gas OperatorMar 2008
470Harper, William E.Woodson, TX 76491Oil & Gas OperatorJul 2016
471Harrell Oil Company LLCArdmore, OK 73402Oil OperatorJan 2025
472Harrell Operating IncGraham, TX 76450Oil & Gas OperatorSep 2005
473Harrell Operating, L.L.C.Graham, TX 76450Oil & Gas OperatorJun 2008
474Harrell Petroleum IncOklahoma City, OK 73102-7201Oil & Gas OperatorOct 2017
475Harrell Verlan WOklahoma City, OK 73102-7201Oil & Gas OperatorNov 1999
476Harrell, CharlesGraham, TX 76450Oil & Gas OperatorDec 2000
477Harrier Holdings, LTD.Burnet, TX 78611Oil OperatorOct 2025
478Harrigan Energy Partners, Inc.Houston, TX 77058Oil & Gas OperatorSep 2010
479Harrigan Operating, LLCHouston, TX 77258Oil & Gas OperatorApr 2020
480Harrington Billy BDepew, OK 74028-3495Oil & Gas OperatorMay 2006
481Harrington Oil Inc.Oil & Gas OperatorApr 1978
482Harrington OrvilleDewey, OK 74029Oil OperatorJun 2025
483Harrington SR Tommy WDrumright, OK 74030-5778Oil OperatorMay 2015
484Harris & Payne-Randel DrillingOil & Gas OperatorDec 1989
485Harris & WaltonMidland, TX 79702Oil & Gas OperatorFeb 2004
486Harris B DNorman, OK 73071-4802Oil & Gas OperatorApr 2014
487Harris Energy Partners Op, LLCFort Worth, TX 76116Oil OperatorOct 2025
488Harris Energy Services, LLCDallas, TX 75201Oil & Gas OperatorOct 2025
489Harris Engineering CoDallas, TX 75248Oil & Gas OperatorDec 1996
490Harris Mildred CTulsa, OK 74120Oil & Gas OperatorJun 2025
491Harris Minerals Corp (The)Oklahoma City, OK 73162-1045Oil & Gas OperatorJun 2025
492Harris Oil & GasOil & Gas OperatorJul 1995
493Harris Oil & Gas CompanyDenver, CO 80202Oil & Gas OperatorJun 2016
494Harris OlinOkmulgee, OK 74447-8508Oil OperatorFeb 2012
495Harris, DavidToronto, KS 66777Oil OperatorApr 2025
496Harris, Jake, TrusteeWichita Falls, TX 76301Oil & Gas OperatorJun 2001
497Harris, Sam E.Albany, TX 76430Oil & Gas OperatorAug 2003
498Harris, William H. Jr.Le Roy, NY 14482Gas OperatorDec 2024
499Harrison & LeeOil OperatorSep 1996
500Harrison Drilling CoOil & Gas OperatorMar 1981