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:
Jul. 29, 2014
Filed:
Mar. 09, 2011
Michel Leger, Rueil-Malmaison, FR;
Vincent Clochard, Sartrouville, FR;
Michel Leger, Rueil-Malmaison, FR;
Vincent Clochard, Sartrouville, FR;
IFP Energies Nouvelles, Rueil-Malmaison Cedex, FR;
Abstract
The invention is a method of monitoring an underground formation into which a gas is injected or from which a gas is produced, by a stratigraphic inversion of seismic data with anamorphosis of impedances. Pre-injection and post-injection seismic data are acquired. A pre-injection seismic impedance cube IPis determined by a stratigraphic inversion of the pre-injection seismic data. An anamorphosis function α is defined by a function comprising a positive lower limit B, an upper limit B, an identity interval defined between limits Band B, with B<B<B<B. A value for each limit B, B, Band Bis associated with each cell of the cube. Post-injection seismic impedances IPare determined by a stratigraphic inversion of the post-injection seismic data wherein the anamorphosis function α is applied to seismic impedances IP. The gas is located within the zone by identifying the cells where IP<IP