CNOOC (China National Offshore Company) has been the standout in output growth, expanding production from 690,000 b/d in 2020 to about 900,000 b/d in 2025, supported by 650,000 km 2 of offshore acreage across the Bohai Gulf and South China Sea. Although historically an offshore-focused producer, CNOOC has moved to broaden its onshore presence as new plays emerge and the company positions itself against resource concentration risk. Meanwhile, another Chinese oil and gas state-owned major Sinopec (with 600,00 ...