Finite–difference Migration in High Definition Seismic Technology

Migration of seismic data may be presented as two different steps – continuation of wavefield inside the medium and imaging in each point of medium. Wavefield continuation by finite-difference scheme is applicable for any complexity velocity models and is used in HDS (High Definition Seismic) technology. The paper presents the results of a simple approach to migration of 1C data. In this case continuation of a wavefield of the reflected waves is made in reverse-time with correlation, for example, with the Ricker impulse on the DP-wave arrival time, calculated by the ray method, in all finite-difference knots. The results of such migration for 2D and 3D velocity models show the possibility of constructing realistic images for variable dip boundaries