1. School of Petroleum Engineering, Xi’an Shiyou University, Xi’an 710065, China
2. State Key Laboratory of Reservoir Geology and Development, Southwest Petroleum University, Chengdu 610500, China
3. Changqing Oilfield Company, Petro China, Xi’an 710018, China
4. Institute of Unconventional Oil and Gas Science and Technology, China University of Petroleum (Beijing), Beijing 102249, China