Abu Dhabi National Oil Company
BP plc
Chevron Corporation
China National Petroleum Corporation (CNPC)
Eni SpA
Exxon Mobil Corporation
Gazprom Neft PJSC
Kuwait Petroleum Corporation
NK Lukoil PAO
Petroliam Nasional Berhad (Petronas)
Phillips 66
Royal Dutch Shell plc
Saudi Aramco
Sinopec
Total SA