1. College of Petroleum Engineering and Shaanxi Key Laboratory of Advanced Stimulation Technology for Oil & Gas Reservoirs, Xi’an Shiyou University, Xi’an, Shaanxi, China
2. Surface Engineering Department, Research Institute of Shaanxi Yanchang Petroleum (Group) Company Ltd, Xi’an, Shaanxi, China
3. The Second Gas Production Plant, PetroChina Changqing Oilfield Company, Xi’an, Shaanxi, China