Oil and Gas Survey China Geological Survey Ministry of Natural Resources Beijing 100083 China;
Unconventional Oil and Gas Geology Laboratory China Geological Survey Ministry of Natural Resources Beijing 100083 China;
China University of Geosciences Wuhan 430074 China;
Shale gas; Sequence correlation; Sweet-spot interval; Doushantuo Formation (Late Proterozoic); Upper Yangtze Platform; Oil and gas exploration engineering; Hubei Province; China;