1. School of Energy Resources, China University of Geosciences, Beijing 100083, China
2. National Key Laboratory of Coal and CBM Development, Jincheng 048000, China
3. Beijing Key Laboratory of Unconventional Natural Gas Geological Evaluation and Development Engineering, Beijing 100083, China
4. Changqing Oilfield
Company, PetroChina, Xi’an 710018, China
5. PetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, China
6. Liaohe Oilfield Company
PetroChina, Panjin, 124010, China