HONG KONG, Aug. 26, 2021 /PRNewswire/ -- CNOOC Limited (the "Company", SEHK: 00883, NYSE: CEO, TSX: CNU) today announced that Bozhong 26-3 oilfield expansion project has commenced production. Bozhong 26-3 oilfield expansion project is located in the south of Bohai Sea, with average water...