Petroleo Brasileiro SA
Shell plc.
Chevron Corporation
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
PJSC Rosneft Oil Company
Lukoil Oil Co.
Bashneft