Rank;Global Rank;Institution;Country;Sector
1;298;Petrobras Brasil;BRA;Companies
2;300;China Petroleum and Chemical Corporation *;CHN;Companies
3;327;China National Petroleum Corp *;CHN;Companies
4;338;China National Offshore Oil Corp *;CHN;Companies
5;426;PetroChina Co Ltd;CHN;Companies
6;437;Marine Design and Research Institute of China;CHN;Companies