Seismic survey method of the subsoil

Patent metadata

Field	Value
Publication number	US-8949031-B2
Application number	US-201213369626-A
Country	US
Kind code	B2
Filing date	Feb 9, 2012
Priority date	Feb 10, 2011
Publication date	Feb 3, 2015
Grant date	Feb 3, 2015

Abstract

A method for obtaining a volumetric image of a geological structure in the subsoil includes generating a plurality of seismic waves by plural seismic sources, acquiring signals or traces obtained by processing the seismic waves reflected by the geological structure for creating a seismic record or shot gather for the activation position of each seismic source, migrating, through a numerical processing, each shot gather to create a respective partial volumetric image of the geological structure, summing the single partial volumetric images to obtain the overall volumetric image of the geological structure, the summing of the single partial volumetric images being obtained by grouping the seismic sources into groups, grouping the groups of seismic sources into super-groups, and effecting N migrations for each super-group.

First claim

The invention claimed is:

1. A method for obtaining a volumetric image of a geological structure present in subsoil, the method comprising:
activating a plurality of seismic sources to generate a plurality of seismic waves;
acquiring a plurality of traces by registering with a plurality of seismic sensors and processing in one or more computers seismic waves reflected by the geological structure;
creating in the one or more computers a shot gather from the plurality of traces…

Assignees

• Andreoletti Clara
• Bienati Nicola
• Eni Spa

Inventors

• Andreoletti Clara
• Bienati Nicola

Classifications

• G01V1/282 Primary

  Physics · mapped topic