1. School of Earth Sciences and Resources, China University of Geosciences, Beijing100083, China
2. School of Energy Resources, China University of Geosciences, Beijing100083, China
3. Key Laboratory of Strategy Evaluation for Shale Gas, Ministry of Natural Resources, China University of Geosciences, Beijing100083, China
4. Carl Zeiss (Shanghai) Company Limited, Beijing100191, China
5. The Key Laboratory of Unconventional Oil & Gas Geology, China Geological Survey, Beijing100083, China
6. China Energy Reserve Corporation, Beijing100107, China
7. Tongren Sino-Energy Natural Gas Corporation, Tongren554300, China