Cheng Lu
Oil and Gas Resources Survey, China Geological Survey, Ministry of Natural Resources, Beijing 100083, P. R. China; National Engineering Research Center of Gas Hydrate Exploration and Development, Guangdong 510075, P. R. China;
China

Xuwen Qin
National Engineering Research Center of Gas Hydrate Exploration and Development, Guangdong 510075, P. R. China; China Aero Geophysical Survey and Remote Sensing Center for Natural Resources, China Geological Survey, Beijing 100083, P. R. China;
China

Jinsheng Sun
School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, P. R. China; CNPC Engineering Technology R&D Company Limited, Beijing 102206, P. R. China;
China

Ren Wang
CNPC Engineering Technology R&D Company Limited, Beijing 102206, P. R. China;
China

Jianchao Cai
National Key Laboratory of Petroleum Resources and Engineering, China University of Petroleum, Beijing 102249, P. R. China;
China