The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 16, 2002
Filed:
Jul. 02, 1998
Laurent Grizon, Carrières sur Seine, FR;
Michel Leger, Rueil-Malmaison, FR;
Vincent Richard, Paris, FR;
Frédéric Dumont, Sartrouville, FR;
Pierre-Yves Dequirez, Voisins le Bretonneux, FR;
Institut Francais du Petrole, Rueil-Malmaison Cedex, FR;
Abstract
A method for 3D modeling of the impedance of a heterogeneous medium from recorded data corresponding to waves coming from the heterogeneous medium (such as a subsoil zone), in response to (for example elastic or electromagnetic) waves transmitted therein, and from an a priori 3D model of this heterogeneous medium, knowing the position of various impedance discontinuities of the medium, and after stratigraphic interpretation is disclose. The method comprises constructing a 3D geometric model comprising several foliated volumes (such as sedimentary units foliated by the deposition isochrones) with definition of the different sheets, constructing an a priori impedance model from this geometric model and from a plurality of impedance measurements taken at various depths of the heterogeneous medium (in a well for example), selecting a covariance model (exponential for example) along the sheets of the foliated volumes, and forming the optimum model by recorded data inversion using the a priori impedance model. The method can be used notably for studying the configuration of hydrocarbon reservoirs for example.