1. School of Earth Sciences, Zhejiang University, Number 866, Yuhangtang Road, Xihu District, Hangzhou 310027, Zhejiang Province, China, yangkang.chen@zju.edu.cn
2. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, 18 Fuxue Road, Beijing 102200, China, cupmi@sina.com
3. Key Laboratory of Exploration Technology for Oil, and Gas Resources of Ministry of Education, Yangtze University, Number 111, Daxue Road, Caidian District, Wuhan 430100, China, chenwei2014@yangtzeu.edu.cn
4. Also at Hubei Cooperative Innovation Center of Unconventional Oil and Gas, Number 111, Daxue Road, Caidian District, Wuhan 430100, China.