1. School of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, Anhui, China
2. State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines, Anhui University of Science & Technology, Huainan 232001, Anhui, China
3. School of Energy Resource, China University of Geosciences, Beijing 100083, China
4. Key Laboratory of Marine Reservoir Evolution and Hydrocarbon Enrichment Mechanism, Ministry of Education, Beijing 100083, China
5. Key Laboratory of Strategy Evaluation for Shale Gas, Ministry of Land and Resources, Beijing 100083, China