Estudio de la interferometría sísmica en modelos sintéticos complejos.

Abstract

The seismic interferometry method uses acoustic waves that propagate through the subsoil to provide information about its morphology and properties. This is achieved by the interference patterns generated through the cross-correlation of the seismic traces which produces an image with morphological information of the subsoil layers. In seismic prospecting of oil deposits, it is of great interest to obtain images of the subsoil with high precision and resolution for its interpretation and subsequent exploitation. Seismic interferometry can produce a result similar to traditional methods, without the drawbacks of the diffusivity of the wave field or environmental sources. Next, a numerical modeling of seismic interferometry is presented for some complex synthetic models. It starts with a simple model, such as the flat layers model, progressively increasing its morphological complexity including dips, slopes and syncline layers in mixed configurations. Generating the synthetic traces of each model, the cross-correlation of the seismic data is performed and the images of the reflecting subsoil layers reconstructed with interferometric migration are obtained.