1. School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, United States
2. Shell International Exploration and Production Inc., Shell Technology Center Houston, Houston, Texas 77082, United States
3. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China
4. School of Petroleum Engineering, State Key Laboratory of Heavy Oil Processing, China University of Petroleum (East China), Qingdao 266580, China
5. Department of Physics, Harvard University, Cambridge, Massachusetts 02138, United States