China University of Petroleum (Beijing) - State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing) - State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing) - State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing) - State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing) - State Key Laboratory of Petroleum Resources and Prospecting, China National Petroleum Corporation (CNPC) - Sichuan Changning Natural Gas Development Company, China National Petroleum Corporation (CNPC) - Shale Gas Research Institute, University of Alberta - Earth and Atmospheric Sciences, China University of Petroleum (Beijing) - State Key Laboratory of Petroleum Resources and Prospecting, University of Liverpool - Department of Earth, Ocean and Ecological Sciences, China University of Petroleum (Beijing) - State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing) - State Key Laboratory of Petroleum Resources and Prospecting and China University of Petroleum (Beijing) - State Key Laboratory of Petroleum Resources and Prospecting

affiliation not provided to SSRN, China University of Petroleum (Beijing) - State Key Laboratory of Petroleum Resources and Prospecting, affiliation not provided to SSRN, affiliation not provided to SSRN, Chongqing University, affiliation not provided to SSRN and affiliation not provided to SSRN