1. Research Institute of Unconvention Petroleum and Renewable Energy (RIUP&RE), China University of Petroleum (East China), Qingdao, Shandong, 266580, China; School of Geosciences, China University of Petroleum (East China), Qingdao, Shandong,
266580, China; Shaanxi Province Key Laboratory of Lacustrine Shale Gas Accumulation and Development, Yanan 716000, Shaanxi, P. R. China
2. Research Institute of Unconvention Petroleum and Renewable Energy (RIUP&RE), China University of Petroleum (East China), Qingdao, Shandong, 266580, China; School of Geosciences, China University of Petroleum (East China), Qingdao, Shandong, 266580,
China; Shaanxi Province Key Laboratory of Lacustrine Shale Gas Accumulation and Development, Yanan 716000, Shaanxi, P. R. China