Patent · US Active

Method of characterizing a CO2 plume in a geological storage aquifer

US8532954B2 · kind B2 · utility

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25Claims

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Assignee

IFP ENERGIES NOUVELLES · FR

Inventors

Noalwenn SALLEE · Paris, FR
Patrick Rasolofosaon · Les Ulis, FR

Key dates

Filing date	Jan 31, 2011
Grant date	Sep 10, 2013
Priority date	—
Expiry date	Mar 15, 2032

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02C20/40
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method of monitoring a CO2 geological storage site by locating the CO2 plume from 4D seismic data is disclosed. A stratigraphic inversion of the seismic data is performed in order to obtain the P and S impedances, before and after CO2 injection. A density variation cube and an incompressibility modulus variation cube are constructed from the seismic impedances. The free CO2 plume is located within the subsoil by identifying, within the cubes cells where the density variation is negative and where the incompressibility modulus variation is negative, which are of an absolute value greater than a given positive threshold.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.