Bin Gong
College of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266590, P. R. China
China

Gang Lei
Faculty of Engineering, China University of Geosciences, Wuhan 430074, P. R. China
China

Litao Chen
College of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, P. R. China
China

Yapeng Zhao
School of Science, Qingdao University of Technology, Qingdao 266520, P. R. China
China