CNOOC Ltd is an investment holding company principally engaged in exploration, development, production and sale of crude oil and natural gas. The Company operates its businesses through three segments. Exploration and Production (E&P) segment is mainly engaged in the exploration and production of conventional oil and gas, shale oil and gas, oil sands and other unconventional oil and gas. Trading Business segment is mainly involved in import and export and crude and gas. Corporate segment is mainly involved in technology development, asset management, product sales and other businesses. The Company conducts its businesses in the domestic market and overseas markets, including Asia, Africa, North America, South America, Oceania and Europe.