1. College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, P. R. China
2. Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province, Southwest Petroleum University, Chengdu, Sichuan 610500, P. R. China
3. China Petroleum Engineering & Construction Corporation Southwest Company, Chengdu, Sichuan 610095, P. R. China