METHOD FOR PACKING AND FILTERING GEOPHYSICAL EVENTS TO RETRIEVE THEREFROM DATA ON THE TYPE OF SUBSOIL

摘要

The invention concerns a method for packing and filtering geophysical events read on multi-domain recordings, with distribution of said events into families each having a particular geophysical significance: equal offset or equal-angle incidence data cubes, elastic parameter cubes derived from a joint stratigraphic inversion and the like, in order to extract therefrom data on the type of subsoil, using a multivariate statistical technique. The method essentially comprises forming by combination of geophysical variables, synthetic variables much fewer in number, which are obtained by constructing an orthogonal vector base in each of the sets of analysis constituted by the data of each of the families, wherefrom is derived the formation of an orthonomal vector base (new attributes) for filtering and describing said geophysical events. The invention is applicable to geological interpretation or to interpretation of an underground reservoir, from seismic measurements or diagraphic measurements, for example.