1. Petrochina Research Institute of Petroleum Exploration & Development, Beijing 100083, China
2. School of Energy Resource, China University of Geosciences (Beijing), Beijing 100083, China
3. Beijing Key Laboratory of Unconventional Natural Gas Geological Evaluation and Development Engineering, Beijing 100083, China
4. Department of Geochemistry, China University of Geosciences (Wuhan), Wuhan 430000, Hubei Province China
5. School of Petroleum Engineering, Xi’an Shiyou University, Xi’an 710000, Shanxi Province China