Chinese Academy of Sciences Key Laboratory ofMechanical Behavior and Design of Materials Department of Modern Mechanics University of Science and Technology of China Hefei 230027 China;
Hefei Guoxuan High-Tech Power Energy Company Hefei 230001 China;
Petro China Research Institute of Petroleum Exploration&Development Beijing 100083 China;
shale; gas; production; prediction; numerical; simulation; enhanced; permeability; area; hydraulic; fracturing;