1. Key Laboratory of Deep Underground Science and Engineering (Ministry of Education), Institute of New Energy and Low-Carbon Technology, Sichuan University, Chengdu 610065, China
2. Department of Energy and Mineral Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, United States
3. Department of Petroleum Geology & Geology, School of Geosciences, University of Aberdeen, AB24 3UE, Aberdeen, U.K.