Major Operators BP Chevron ConocoPhillips ExxonMobil Shell Total
Independent Operators Anadarko Apache Corporation BG Chesapeake Devon El Paso Hilcorp Maersk Oil Nexen Perenco Repsol Statoil Tullow Oil
EPC Companies Bechtel KBR MODEC WorleyParsons | Oil & Gas Service Companies 2H Offshore BW Offshore Cameron CETCO Oilfield Services Clough DOF Subsea Exterran Granite Halliburton Heerema Marine Contractors Helix Energy Solutions Hoerbiger Hydrasun Invista Key Energy Kongsberg Noble Drilling Services Odebrecht Pacific Drilling Petrofac San Antonio International SapuraAcergy Seadrill Subsea 7 TD Williamson Tenaris Van Oord Weatherford Wood Group PSN |