A generalized effective anisotropic poroelastic model for periodically layered media accounting for both Biot’s global and interlayer flows

We present a generalized effective poroelastic model for periodically layered media in the mesoscopic scale range, which accounts for both Biot’s global and interlayer wave-induced fluid flow, as well as for the anisotropy associated with the layering. Correspondingly, it correctly predicts the exis...

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Detalles Bibliográficos
Autores principales: Milani, Marco, Monachesi, Leonardo Bruno, Sabbione, Juan Ignacio, Rubino, Jorge Germán, Holliger, Klaus
Formato: Articulo
Lenguaje:Inglés
Publicado: 2016
Materias:
Geofísica
Rock physics
Mathematical formulation
Attenuation
Anisotropy
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/107894
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-107894
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Geofísica
Rock physics
Mathematical formulation
Attenuation
Anisotropy
spellingShingle Geofísica
Rock physics
Mathematical formulation
Attenuation
Anisotropy
Milani, Marco
Monachesi, Leonardo Bruno
Sabbione, Juan Ignacio
Rubino, Jorge Germán
Holliger, Klaus
A generalized effective anisotropic poroelastic model for periodically layered media accounting for both Biot’s global and interlayer flows
topic_facet Geofísica
Rock physics
Mathematical formulation
Attenuation
Anisotropy
description We present a generalized effective poroelastic model for periodically layered media in the mesoscopic scale range, which accounts for both Biot’s global and interlayer wave-induced fluid flow, as well as for the anisotropy associated with the layering. Correspondingly, it correctly predicts the existence of the fast and slow P-waves as well as quasi and pure S-waves. The proposed analytical model is validated through comparisons of the P-wave and S-wave phase velocity dispersion and attenuation characteristics with those inferred from a one-dimensional numerical solution of Biot’s poroelastic equations of motion. We also compare our model with the classical mesoscopic model of White for a range of scenarios. The results demonstrate that accounting for both wave-induced fluid flow mechanisms is essential when Biot’s global flow prevails at frequencies that are comparable or smallerwith respect to those governing interlayer flow. This is likely to be the case in media of high permeability, such as, for example, unconsolidated sediments, clean sandstones, karstic carbonates, or fractured rocks. Conversely, when interlayer flow occurs at smaller frequencies with respect to Biot’s global flow, the predictions of this model are in agreement with White’s model, which is based on quasi-static poroelasticity.
format Articulo
Articulo
author Milani, Marco
Monachesi, Leonardo Bruno
Sabbione, Juan Ignacio
Rubino, Jorge Germán
Holliger, Klaus
author_facet Milani, Marco
Monachesi, Leonardo Bruno
Sabbione, Juan Ignacio
Rubino, Jorge Germán
Holliger, Klaus
author_sort Milani, Marco
title A generalized effective anisotropic poroelastic model for periodically layered media accounting for both Biot’s global and interlayer flows
title_short A generalized effective anisotropic poroelastic model for periodically layered media accounting for both Biot’s global and interlayer flows
title_full A generalized effective anisotropic poroelastic model for periodically layered media accounting for both Biot’s global and interlayer flows
title_fullStr A generalized effective anisotropic poroelastic model for periodically layered media accounting for both Biot’s global and interlayer flows
title_full_unstemmed A generalized effective anisotropic poroelastic model for periodically layered media accounting for both Biot’s global and interlayer flows
title_sort generalized effective anisotropic poroelastic model for periodically layered media accounting for both biot’s global and interlayer flows
publishDate 2016
url http://sedici.unlp.edu.ar/handle/10915/107894
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