1. College of Petroleum Engineering, Xi’an Shiyou University, Xi’an 710065, China
2. Shandong Key Laboratory of Depositional Mineralization & Sedimentary Mineral, Shandong University of Science and Technology, Qingdao 266590, China
3. Institute of Engineering Technology, PetroChina Coalbed Methane Company Limited, Xi’an 710082, China
4. Exploration & Development Research Institute, Tuha Oilfield Company, Hami 839009, China