1. School of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, PR China
2. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, PR China
3. CCDC Drilling Fluid Technology Service CO., LTD, Chengdu, Sichuan 610051, PR China
4. School of Petroleum Engineering, Yangtze University, Wuhan, Hubei 430100, PR China