1. Ministry of Education, Key Laboratory of Unconventional Oil and Gas Development (China University of Petroleum (East China)), Qingdao, Shandong 266580, China
2. College of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, China
3. Oil and Gas Technology Research Institute of Changing Oilfield Company, Xi’an, Shaanxi 710018, China
4. National Engineering Laboratory of Low Permeability Oil and Gas Field, Xi’an, Shaanxi 710018, China
5. School of Earth and Space Sciences, Peking University, Beijing 100091, China