1. Research Institute of Petroleum Exploration and Development PetroChina Beijing 100083 China
2. Polymer Research Institute, State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610065 China
3. School of Chemical & Environmental Engineering China University of Mining and Technology Beijing 100083 China
4. Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province, School of Chemistry and Chemical Engineering Southwest Petroleum University Xindu 610500 China