Abstract：The third member of the Shaheji formation in Fanjia area is the frontal sedirnents of the Gaoqing fan delta. It has many unconnected turbidite sand bodies, which appear as shingled weak short events in a seismic section. Both the isopaeh map and the exact struetuxal map without igneous rock influence have been plotted successfully by correlating and quantitatively interpreting the turbidite sand bodies with the use of synthetic seismograms, VSP and trace integral section. Furthermore, Oil bearing area and geological reserve were predicted by comprehensively interpreting the shape, distribution and oil content of the turbidite sand bodies, and then making reservoir description, with referring to relevant drilling and logging data. Drilling has proved the reservoir description suecessful.
