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Entity Subsidiaries

: CNOOC Limited

Subsidiary	Percentage	From	To
CNOOC (Taizhou) Petrochemical Co. Ltd.	49.00%	01/2010	12/2050
CNOOC and Shell Petrochemicals Company Limited	50.00%	03/2016	12/2050
CNOOC Ningbo Daxie Petrochemical Co. Ltd.	100.00%	01/2000	12/2050
CNOOC Petrochemical Investment Co., Ltd.	100.00%	12/2000	12/2050
CNOOC Refining & Chemicals Co., Ltd.	100.00%	11/2005	12/2050