Patent Document ID: 20050013195
Application ID: 10495241
Patent Flag: 0

Claim One:
1 / A method of seismic processing for obtaining information on the geophysics of the subsoil, the method comprising the following steps: a) acquiring seismic traces at at least one point on the surface of the subsoil or in the subsoil, the seismic traces corresponding on each occasion to two perpendicular components of a shear wave emitted into the subsoil and reflected by different interfaces therein; b) applying a succession of transformations (⊥) at least to a temporal portion of the traces, which transformations are the inverses of the transformations that it is assumed that the wave has encountered on passing through a succession of layers in the subsoil, this operation being repeated for different assumptions concerning birefringence in the various layers; c) for each of these assumptions, determining the value of a parameter representative of the coherence/similarity between the result traces obtained in this way; and d) selecting as a function of the values obtained in this way that one of the hypotheses which is considered as being most representative of the subsoil, the two result traces obtained for said hypothesis being compensated traces of the subsoil birefringency.