1. College of Petroleum Engineering, Southwest Petroleum University, Chengdu 610500, Sichuan, China;
2. CNPC Key Laboratory of Oil & Gas Storage and Transportation, Southwest Petroleum University, Chengdu 610500, Sichuan, China
3. CNPC Key Laboratory of Oil & Gas Storage and Transportation, Southwest Petroleum University, Chengdu 610500, Sichuan, China e-mail:
4. South Branch, PetroChina Natural Gas Marketing Company, Guangzhou 510000, Guangdong, China
5. Faculty of Engineering and Applied Science, University of Regina, Regina, SK S4S 0A2, Canada
6. Faculty of Engineering and Applied Science, University of Regina, Regina, SK S4S 0A2, Canada e-mail: