1. Provincial Key Laboratory of Unusual Well Stimulation at College of Petroleum Engineering, Xi’an Shiyou University, Xi’an, China
2. College of Petroleum Engineering, Xi’an Shiyou University, Xi’an, China
3. PetroChina Research Institute of Petroleum E&D, Beijing, China
4. E&D Research Institute of Changqing Oilfield Company, PetroChina, Xi’an, China
5. School of Energy Resource, China University of Geoscience(Beijing), Beijing, China