1. College of Petroleum Engineering, Xi’an Shiyou University, Xi’an 710065, China
2. Engineering Research Center of Development and Management for Low to Ultra-Low Permeability Oil & Gas Reservoirs in West China of Ministry of Education, Xi’an Shiyou University, Xi’an 710065, China
3. Xi’an Key Laboratory of Tight Oil (Shale Oil) Development, Xi’an 710065, China
4. College of Earth Science and Engineering, Xi’an Shiyou University, Xi’an 710065, China