On the basis of comprehensive research of log data,core samples and high resolution seismic data,three T R(Transgression Regression) sedimentary cycles are recognized in the Sub member of Es 3 3 in Qianliyuan area,Dongpu depression.Braided delta and deep lake depositional systems are developed in cycle Ⅰ,while the cycle Ⅱ and Ⅲ are mainly composed of fan delta,deep lake and lacustrine fan systems.A high resolution,equal time stratigraphic framework is established by regional correlation of sedimenta...