HONG KONG, March 30, 2025 /PRNewswire/ — CNOOC Limited (the “Company”, SEHK: 00883 (HKD Counter) and 80883 (RMB Counter), SSE: 600938) announces today that the Company has made a major oilfield discovery of Huizhou 19-6 in the deep and ultra-deep plays of the South China Sea, which adds…