1. Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo 454003, China
2. Unconventional Gas Research Institute, Henan Polytechnic University, Jiaozuo 454003, China
3. School of Energy Resources, China University of Geosciences, Wuhan 430074, China
4. Collaborative Innovation Center of Coalbed Methane and Shale Gas for Central Plains Economic Region, Jiaozuo 454003, China
5. The University of New South Wales, Sydney 2052, Australia
6. Petrochina Coalbed Methane Company Limited Linfen Branch, Linfen 042202, China