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:
Dec. 24, 2013
Filed:
Oct. 20, 2010
Patrick Rasolofosaon, Les Ulis, FR;
Bernard Zinszner, Montesson, FR;
Patrick Rasolofosaon, Les Ulis, FR;
Bernard Zinszner, Montesson, FR;
IFP Energies Nouvelles, Rueil-Malmaison Cedex, FR;
Abstract
A method for exploiting underground porous media via injection or production of a fluid is disclosed, wherein repetitive seismic records are interpreted taking into consideration the seismic frequency band in the evaluation of pore pressures. After inversion of 4D seismic data, at least two sets of seismic speeds are available which correspond to different moments in time. A Hertz-type power-law is then used to evaluate pore pressures, wherein the Hertz coefficient is determined using laboratory ultrasound or sonic measures. Then the coefficients are adjusted using a measurement of the attenuation of the ultrasound or sonic waves. Fluid flow is then monitored within the porous media by determining whether variation in seismic speed is due to the variation of pore pressure or to fluid substitution, using the adjusted Hertz equation.