1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, Sichuan, P. R. China
2. School of New Energy and Materials, Southwest Petroleum University, Chengdu, 610500, Sichuan, P. R. China
3. School of Petroleum Engineering, Yangtze University, Wuhan, 434023, Hubei, China