Seismic trace analysis method utilizing a statistical calibration technique for deducing geologic properties

摘要

The method applies to an underground formation concerning which one has geologic data obtained by coring or logging in wells (W.sub. 1 -W.sub. k) crossing the formation and seismic data which have been obtained by means of a reflection survey of the 3D type. It is based on a statistical calibration technique with a statistical relationship obtained by bringing together the local geologic data (measured in wells) and seismic attributes read on seismic traces (RW.sub.1 -RW.sub.k) obtained in the immediate neighborhood of each well. This calibration allows an empirical relation to be obtained and applied to all the seismic traces of the field in order to infer the associated geologic characteristics therefrom, by taking advantage of the much denser spatial coverage allowed by seismic prospecting.