1. Institute for Ocean Engineering, Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen518055, China
2. State Key Laboratory of Natural Gas Hydrates, Technology Research Department, CNOOC Research, Beijing100102, China
3. Suzhou Niumag Analytical Instruments Co., Ltd., Suzhou215151, China
4. School of Petroleum Engineering, China University of Petroleum (East China), Qingdao266580, China