In seismic exploration, subsurface salt dome, as a high-velocity geologic body, brought about a series of problems to ordinary processing in time domain and interpretation, for example, false image of subsalt structure and abnormal stack velocity field.

The Lower Permian of uplifts in east merging of littoral Caspian Sea basin is a set of giant thickness of salt beds and multiple salt domes with significant thickness developed locally, in which the thickness is from 200m to 3500m.

There are massive salt domes of great thickness,which ranges from several dozen meters to 3,700 meters,in pre-salt Carboniferous carbonate reservoirs of the Pre-Caspian Basin.

The topics included point-source/point-receiver, multiples, directional illumination, salt imaging, time-lapse seismic, rock physics, and non-seismic technologies.