Total Sa

Centre National De La Recherche Scientifique

Universitë De Bordeaux

Institut Polytechnique De Bordeaux

Elf Exploration Production

Ecole Nationale Supérieure Des Sciences Agronomique De Bordeaux-aquitaine

Total Se

Ecole Nationale Superieure Des Sciences Agronomiques De Bordeaux Aquitaine

Marc Donias

Naamen Keskes

Sébastien Guillon

Olivier Lavialle

Guillaume Zinck

Fabien Pauget

Sebastien Guillon

Pierre Baylou

Yannick Berthoumieu

S&eacute;bastien Guillon

Jacques Daniel

Yannick Barthoumieu

The invention pertains to a method for enhancing the determination, from a seismic image of at least a portion of a seismic horizon in a three-dimensional domain. The method comprises: receiving the seismic image; receiving a plurality of related control points; defining pseudo-rectangles; for each pseudo-rectangle applying a diffeomorphic transformation F: defining a new domain; transforming points of the seismic image; transforming said pseudo-rectangle into a corresponding rectangle; applying a horizon reconstruction algorithm to the transformed points, to determine a part of a transformed horizon, the reconstruction comprising solving a Poisson equation; and computing a part of the horizon, said computing comprising applying an inverse diffeomorphic transformation Fto the determined part of a transformed horizon.

Method for enhancing the determination of a seismic horizon

The invention targets in particular a method for searching for a seismic horizon in a seismic image of the subsoil. The method notably comprises the designation of two points belonging to the horizon sought, the iterative search for the best solution for the equation of the seismic horizon notably by virtue of a breakdown of this solution into two components, a pseudo-continuous component and a jump component.

Method of tracking discontinuous seismic horizons in seismic images

The invention relates to a method for fracture plane reconstruction in a three-dimensional set () of values, comprising the steps of providing a computer with the three-dimensional set, display by the computer of a succession of plane sections () of the three-dimensional set, selection by the user of points of the fracture plane over some of these sections during their display; and reconstruction by the computer of the fracture plane from the selected points.

Method and program for fracture plane reconstruction

The method uses the image obtained by accumulating continuity curves representative of seismic horizons so as to determine the geological strata constituting the seismic section, such as they were deposited and not such as they are observed today. To do this, the method defines a transformation of the vertical scale of the seismic section, scale measured in seismic times, into a geological vertical scale measured in geological times. This transformation is based on an equalization of histograms. Starting from equalized histograms, the method makes it possible to determine equalized seismic sections which are used to determine the rates of sedimentation which governed the depositions of geological strata. In particular, it highlights geological hiatuses, that is to say erosions and gaps.

Method of chrono-stratigraphic interpretation of a seismic cross section or block

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Talence, France

Marc Donias