1. Mining Engineering, Shanxi Institute of Energy, Taiyuan, PR China
2. National Engineering Laboratory for Pipeline Safety/ MOE Key Laboratory of Petroleum Engineering/ Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, China University of Petroleum-Beijing, Beijing, PR China
3. School of Petrochemical Engineering and Environment, Zhejiang Ocean University, Zhoushan, PR China
4. Shanxi Natural Gas Co.,Ltd, Taiyuan, PR China