1. College of Chemistry and Chemical Engineering; Southwest Petroleum University, Sichuan; Chengdu 610500 PR China
2. Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province; Southwest Petroleum University, Sichuan; Chengdu 610500 PR China
3. State Key Laboratory of Oil & Gas Reservoir Geology and Exploitation; Southwest Petroleum University, Sichuan; Chengdu 610500 PR China