1. Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China
2. State Key Laboratory of Enhanced Oil Recovery, Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China
3. Energy Systems Engineering, University of Regina, Regina, Saskatchewan S4S 0A2, Canada
4. Petroleum Engineering School, Southwest Petroleum University, Chengdu, Sichuan 610500, China