Abstract:The paper presented a simple and practical method aimed at making inclined well synthetic seismogram:①calculating intervals,ay deviating measurement station from wellhead and true vertical depth (TVD) according to angle of well deviation,azimuth and measurement depth (MD);②making a synthetic seismogram using conventional technique in TVD domain;③displaying the synthetic seismo- gram and logging traces along the well and considering the relation between the borehole azimuth and the seismic line at same time;④finely adjusting the synthetic seismogram so that the synthetic seismogram matching seismic profile better. Synthetic seismograms of inclined well and horizonal well made of above-mentioned method have good correlation with seismic profiles and achieve the aim of bed marking for inclined well.