Abstract：Statistic and regressive analyses have been carried out for petrophysical character and seismic attributes of known turbidite sand body in Es3 of Niuzhuang sub-sag.The studied results showed:(1) the velocities of different lithology in Es3 of Niuzhuang sub-sag are different, the velocity of carbonic sandstone is the highest,sandstone is second and mudstone is the lowest; (2)the physical property of reservoir is bad for turbidite sand body characterized by very strong and very weak reflection amplitude,so that the physical property of reservoir could be identified qualitatively by reflection amplitude; (3) the corresponding unitary relationship between seismic attributes and reservoir parameters is difficult to be defined in total area,but external factors affected variation of reflection amplitude are basically same for same sand body,so that the regressive experimental formula can be used for quantitative calculation of physical property;(4)it can't unilaterally and blindly seek the general adaptability of predicting methods and calculating models when using seismic attributes to predict the physical property of reservoir.
