Method for Resolving the Ifluence of Near Surface Heterogeneities During Velocity Depth Model Building

True depth imaging is one of the main problems of seismic processing and, first of all, depends on the high-quality depth velocity model. There are many different methods of depth velocity model building. The model itself, and, therefore, the result of migration highly depends on the methods of resolving the influence of complex near surface overburden. The underestimation of the subsurface influence leads to a distortion of seismic data over the whole section. However, the application of large statics shifts to the data, which solve the static problems in time, leads to distortion of seismic velocities and, consequently, to difficulties in the depth velocity model building. In this paper, we suggest a method for resolving the complex near surface overburden at the stage of building the depth velocity model using seismic refraction waves.