Hong Kong-listed CNOOC Limited and its subsidiaries has made an oil discovery with the exploration well JZ 21-1S-1 in Bohai Bay. Located on JZ21-1 south structure in Liaozhong Sag in Bohai Bay, Well JZ21-1S-1 was drilled to a total depth around 2400 meters in 20 meters of water. On 7.94mm and 7.14mm chokes, the well…