Research on sequence stratigraphy of the Shahejie formation in Maozhou area,Baxian depression

The Paleogene Shahejie formation is one of the major exploration targets in Maozhou area,Huabei oilfield.Stratigraphic division has not been normalized,thereby greatly hindered in-depth exploration in this area.Seismic,logging,drilling and palaeontologic data are fully used in combination with identification of various sequence boundaries to construct a consistent stratigraphic correlation between seismics and geology.This research also preliminarily analyzes formation development,distribution and control factors,offering basis for further in-depth exploration in the Shahejie formation of Maozhou area.