Numerical simulation of ultrasonic waves in reservoir rocks with patchy saturation and fractal petrophysical properties

We simulate the propagation of ultrasonic waves in heterogeneous poroviscoelastic media saturated by immiscible fluids. Our model takes into account capillary forces and viscous and mass coupling effects between the fluid phases under variable saturation and pore fluid pressure. The numerical proble...

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Autores principales: Santos, Juan Enrique, Ravazzoli, Claudia Leonor, Gauzellino, Patricia Mercedes, Carcione, J. M.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2005
Materias:
Astronomía
finite elements
porous media
fractals
reservoir geophysics
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/135255
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-135255
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Astronomía
finite elements
porous media
fractals
reservoir geophysics
spellingShingle Astronomía
finite elements
porous media
fractals
reservoir geophysics
Santos, Juan Enrique
Ravazzoli, Claudia Leonor
Gauzellino, Patricia Mercedes
Carcione, J. M.
Numerical simulation of ultrasonic waves in reservoir rocks with patchy saturation and fractal petrophysical properties
topic_facet Astronomía
finite elements
porous media
fractals
reservoir geophysics
description We simulate the propagation of ultrasonic waves in heterogeneous poroviscoelastic media saturated by immiscible fluids. Our model takes into account capillary forces and viscous and mass coupling effects between the fluid phases under variable saturation and pore fluid pressure. The numerical problem is solved in the space–frequency domain using a finite element procedure and the time–domain solution is obtained by a numerical Fourier transform. Heterogeneities due to fluid distribution and rock porosity–permeability are modeled as stochastic fractals, whose spectral densities reproduce saturation an petrophysical variations similar to those observed in reservoir rocks. The numerical experiments are performed at a central frequency of 500 kHz, and show clearly the effects of the different heterogeneities on the amplitudes of shear and compressional waves and the importance of wave mode conversions at the different interfaces.
format Articulo
Articulo
author Santos, Juan Enrique
Ravazzoli, Claudia Leonor
Gauzellino, Patricia Mercedes
Carcione, J. M.
author_facet Santos, Juan Enrique
Ravazzoli, Claudia Leonor
Gauzellino, Patricia Mercedes
Carcione, J. M.
author_sort Santos, Juan Enrique
title Numerical simulation of ultrasonic waves in reservoir rocks with patchy saturation and fractal petrophysical properties
title_short Numerical simulation of ultrasonic waves in reservoir rocks with patchy saturation and fractal petrophysical properties
title_full Numerical simulation of ultrasonic waves in reservoir rocks with patchy saturation and fractal petrophysical properties
title_fullStr Numerical simulation of ultrasonic waves in reservoir rocks with patchy saturation and fractal petrophysical properties
title_full_unstemmed Numerical simulation of ultrasonic waves in reservoir rocks with patchy saturation and fractal petrophysical properties
title_sort numerical simulation of ultrasonic waves in reservoir rocks with patchy saturation and fractal petrophysical properties
publishDate 2005
url http://sedici.unlp.edu.ar/handle/10915/135255
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