CHEN Dechun1, LI Ang1,2, GAO Li3, ZHU Zejun4, JIANG Dong4
(1.College of Petroleum Engineering, China University of Petroleum, Qingdao, Shandong 266580, China; 2.Oifield Engineering Research Institute, CNOOC, Energy Technology & Services Linited, Tianjin 300452, China; 3.No.3 Oil Production Plant, Northwest Oilfield Company, Sinopec, Korla, Xinjiang 841000, China; 4.Oil Production Institute, Shengli Oilfield Company, Sinopec, Dongying, Shandong 257000, China)