Analysis on Sedimentary Facies of the Lower Member of Xingouzhui Formation in Chentuokou Depression of Jianghan Basin

From seismic facies and provenance,sedimentary facies distribution characteristics of the lower member of Xingouzhui Formation in Chentuokou Depression were deeply studied,the provenances of Huarong Uplift and Laoxin-Xingou Area in Chentuokou Depression were clarified.Through studying the characteristics of seismic wave amplitude,frequency,continuity,internal structure and external morphology,target zones in Chentuokou Depression were divided into three seismic facies types,and combined with the result of provenance analysis and well-shock conversion,seismic facies was converted into sedimentary facies.Research shows that the lower member of Xingouzhui Formation in Chentuokou Depression mainly develop fan-delta facies and lacustrine depositional systems.