Rio Ventura, Subsidiary of Starboard-Backed 3R Petroleum, Acquires Rio Ventura Cluster from Petrobras for US$94.2m (em português) August 21, 2020 Rio Ventura, Subsidiary of Starboard-Backed 3R Petroleum, acquired Rio Ventura Cluster from Brazil’s state-owned oil company Petrobras for US$94.2m. (Reuters) Brazil’s state-owned oil giant Petrobras said on Friday it has…