1. Director, Tarim Oilfield Company, China National Petroleum Corporation, Xiangli Ave., Korla, Xinjiang 841000, China.
2. Tarim Oilfield Company, China National Petroleum Corporation, Xiangli Ave., Korla, Xinjiang 841000, China.
3. College of Mechanical and Transportation Engineering, China Univ. of Petroleum (Beijing), Beijing 102200, China.
4. Professor, College of Mechanical and Transportation Engineering, Beijing Univ. of Chemical Technology, Beijing 100029, China (corresponding author).