5 ranked institutions
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1 (24)China National Petroleum Corp *CHNCompany
2 (31)PetroChina Co LtdCHNCompany
3 (34)China Petroleum and Chemical Corporation *CHNCompany
4 (115)China National Offshore Oil Corp *CHNCompany
5 (358)Petrobras BrasilBRACompany
Scimago Institutions Rankings© has been developed by

Scimago Lab

Data source:

Scopus

“Only Ranks, far more than raw data”