CNOOC to Buy Extra 5% Stake in Petrobras’ (PBR) Buzios Oilfield Posted byZacks Equity Research October 1, 2021 Leave a comment on CNOOC to Buy Extra 5% Stake in Petrobras’ (PBR) Buzios Oilfield Per Petrobras (PBR), CNOOC’s purchase of an additional 5% share in the massive Buzios pre-salt field will not impact its 2021 output goal until the de…