Xiaochen Guo
School of Geoscience and Technology, Southwest Petroleum University, Chengdu 610500, P. R. China;
China

Rui Liu
School of Geoscience and Technology, Southwest Petroleum University, Chengdu 610500, P. R. China;
China

Shang Xu
School of Geosciences, China University of Petroleum (East China), Qingdao 266580, P. R. China;
China

Bing Feng
Guizhou Shale Gas Exploration and Development Co. LTD, Guiyang 550001, P. R. China;
China

Tao Wen
Department of Earth and Environmental Sciences, Syracuse University, Syracuse, NY 13244, USA;
China

Tingshan Zhang
School of Geoscience and Technology, Southwest Petroleum University, Chengdu 610500, P. R. China;
China