1. State Key Laboratory of Heavy Oil Processing, College of Science, China University of Petroleum, Beijing 102249, PR China
2. CNOOC EnerTech-Safety & Environmental Protection Company, Tianjin 300457, PR China
3. Department of Production Optimization, China Oilfield Services Limited, Tianjin 300459, PR China
4. School of International Trade and Economics, University of International Business and Economics, Beijing 100029, PR China