Abstract：It is still a troublesome problem so far for us to predict both the inside lithologis variation of land-facies sedimentary sequence and reservoir distribution by adopting sequence stratigraphy theory.The influence factors on land-fades sediment space are more various and complicated than those on sea-fades sediments,which is incarnated mainly as the influence of river balanced section on the datum,and the sediment supplements from climate or tectonic movement.According to the seismic reflection characteristics of sand reservoir in the eastern Zhungeer basin,we take both the pattern corresponding to 3D seismic reservoir correlation and the seismic horizon correlation using pseudo-sequence as a unit to reconstruct nicely the original deposional surfaces of river fades sediments in different periods.As a result,river-facies sand reservoir can be ascertained by analysing the seismic reflection amplitudes along the interested formations.
