School of Geoscience and Technology;
Southwest Petroleum University;
Chengdu 610500;
China;
Chengdu Center;
China Geological Survey;
Chengdu 610081;
China;
Key Laboratory of Sedimentary Basin and Oil and Gas Resources;
Ministry of Natural Resources;
Chengdu 610081;
China;
State Key Laboratory of Petroleum Resource&Prospecting;
China University of Petroleum;
Beijing 102249;
China;
Cooperative Innovation Center of Shale Gas Resources and Environments;
Southwest Petroleum University;
Chengdu 610500;
China;
Research Institute of Petroleum Exploration and Development;
PetroChina;
Beijing 1000S 3;
China;
Beijing Center for Physical and Chemical Analysis;
Beijing 100089;
China;
lacustrine shales; pore characteristics; clay mineral; shale oil; Upper Cretaceous; Songliao Basin;