1. School of Petroleum Engineering, Xi’an Shiyou University, Xi’an, Shaanxi 710065, China
2. Engineering Research Center of Development and Management for Low to Extra-Low Permeability Oil & Gas Reservoirs in West China, Ministry of Education, Xi’an, Shaanxi 710065, China
3. Yanchang Oilfield Co., Ltd., Yan’an, Shaanxi 716000, China
4. School of Petroleum Engineering and Environmental Engineering, Yan’an University, Yan’an, Shaanxi 716000, China
5. No. 2 Production of XinJiang OilField Company, Xinjiang 834000, China