1. School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan, China
2. Chemistry and Process Research Department, State Key Laboratory of Offshore Oil Exploitation, Beijing, China
3. Research Institute of Enhanced Oil Recovery, CNOOC Research Institute Ltd., Beijing, China
4. Oilfield Chemicals R&D Center, CNOOC (Tianjin) Oilfield Chemical Co. Ltd, Tianjin, China