Royal Dutch Shell plc
Chevron Brasil Petroleo Ltda
Petroleo Brasileiro SA
Equinor ASA.
PetroChina Company Limited
CNOOC Limited
China National Petroleum Corporation
Reliance Industries Limited
Indian Oil Corporation Limited
Bharat Petroleum Corporation Limited
Hindustan Petroleum Corporation Limited
OAO Gazprom
OJSC Rosneft Oil Company
Lukoil Oil Co.
Bashneft
Exillon Energy Plc