Abstract：Geological drillers often use deviated-well technology to make an exploratory well penetrate several targets which do not lie in same vertical direction. In order to correlate deviated-well data with seismic section, people should do the following processings of deviated-well data. ?The deviated-well projection positions on adjacent seismic sections are determined by using deviated-well data, formation dip angle and formation dip direction; the position being usually described with "vertical depth'' and "deviation". The record depths of samples of each logging curve must be converted into the vertical depths in a relevant seismic section. ?Synthetic seismogram is made by using depth-converted sonic and density logging data. ?The synthetic seismogram whose amplitudes are multiplied by a proper factor is stacked with the "deviation" of the deviated-well projection on a seismic section. ?The synthetic seismogram is displayed in the same scale the seismic section uses, so that it can be correlated with the seismic section. Other logging data of deviated well, such as apparent resistivity curve, natural potential curve and natural gamma curve, also can be correlated with seismic section by stacking them with the "deviation" of deviated-well projection on seismic section.
