1. School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China
2. Key Laboratory of Unconventional Oil & Gas Development, China University of Petroleum, Qingdao 266580, China
3. Qinghai Oilfield Drilling Technology Research Institute, Gansu Dunhuang 736202, China
4. Zhidan Oil Production Plant, Shaanxi Yanchang Petroleum (Group) Co., LTD, Yan’an 717500, China