1. China United Coalbed Methane Natl Engn Res Ctr Co, National Engineering Research Center of Coalbed Methane Development & Utilization, Beijing, China
2. PetroChina Coalbed Methane Company Limited, Beijing, China
3. State Key Laboratory of High Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, Beijing, China
4. School of Engineering Sciences, University of Chinese Academy of Sciences, Beijing, China