Seismic velocity and Q anisotropy in fractured poroelastic media
- Autores
- Santos, Juan Enrique; Martinez Corredor, Robiel; Carcione, Jose M.
- Año de publicación
- 2014
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- A fluid-saturated poroelastic isotropic medium with aligned fractures behaves as a transversely isotropic and viscoelastic (TIV) medium when the predominant wavelength is much larger than the average distance between fractures. A planar fracture embedded in a fluid saturated poroelastic background medium can be modeled as a extremely thin and compliant porous layer. P-waves traveling in this type of medium induce fluid-pressure gradients at fractures and mesoscopic-scale heterogeneities, generating fluid flow and slow (diffusion) Biot waves, causing attenuation and dispersion of the fast modes (mesoscopic loss). A poroelastic medium with embedded aligned fractures exhibits significant attenuation and dispersion effects due to this mechanism, which can properly be represented at the macroscale with an equivalent TIV medium. In this work, we apply a set of compressibility and shear harmonic finite-element (FE) experiments on fractured highly heterogeneous poroelastic samples to determine the five complex and frequency dependent stiffnesses characterizing the equivalent medium. The experiments consider brine or patchy brine-CO2 saturated samples and a brine saturated sample with a heterogeneous (fractal) skeleton with fractures. We show that fractures induce strong seismic velocity and Q anisotropy, both for qP and qSV waves, enhanced either by patchy saturation or frame heterogeneity.
Fil: Santos, Juan Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ingeniería. Instituto del Gas y del Petróleo; Argentina. Purdue University; Estados Unidos. Universidad Nacional de La Plata; Argentina
Fil: Martinez Corredor, Robiel. Universidad Nacional de La Plata. Facultad de Ingeniería; Argentina
Fil: Carcione, Jose M.. Istituto Nazionale di Oceanografia e di Geofisica Sperimentale; Italia - Materia
-
ANISOTROPY
ATTENUATION
FINITE ELEMENTS
FRACTURES
POROELASTICITY
VELOCITY DISPERSION - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/89347
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Seismic velocity and Q anisotropy in fractured poroelastic mediaSantos, Juan EnriqueMartinez Corredor, RobielCarcione, Jose M.ANISOTROPYATTENUATIONFINITE ELEMENTSFRACTURESPOROELASTICITYVELOCITY DISPERSIONhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1A fluid-saturated poroelastic isotropic medium with aligned fractures behaves as a transversely isotropic and viscoelastic (TIV) medium when the predominant wavelength is much larger than the average distance between fractures. A planar fracture embedded in a fluid saturated poroelastic background medium can be modeled as a extremely thin and compliant porous layer. P-waves traveling in this type of medium induce fluid-pressure gradients at fractures and mesoscopic-scale heterogeneities, generating fluid flow and slow (diffusion) Biot waves, causing attenuation and dispersion of the fast modes (mesoscopic loss). A poroelastic medium with embedded aligned fractures exhibits significant attenuation and dispersion effects due to this mechanism, which can properly be represented at the macroscale with an equivalent TIV medium. In this work, we apply a set of compressibility and shear harmonic finite-element (FE) experiments on fractured highly heterogeneous poroelastic samples to determine the five complex and frequency dependent stiffnesses characterizing the equivalent medium. The experiments consider brine or patchy brine-CO2 saturated samples and a brine saturated sample with a heterogeneous (fractal) skeleton with fractures. We show that fractures induce strong seismic velocity and Q anisotropy, both for qP and qSV waves, enhanced either by patchy saturation or frame heterogeneity.Fil: Santos, Juan Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ingeniería. Instituto del Gas y del Petróleo; Argentina. Purdue University; Estados Unidos. Universidad Nacional de La Plata; ArgentinaFil: Martinez Corredor, Robiel. Universidad Nacional de La Plata. Facultad de Ingeniería; ArgentinaFil: Carcione, Jose M.. Istituto Nazionale di Oceanografia e di Geofisica Sperimentale; ItaliaPergamon-Elsevier Science Ltd2014-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/89347Santos, Juan Enrique; Martinez Corredor, Robiel; Carcione, Jose M.; Seismic velocity and Q anisotropy in fractured poroelastic media; Pergamon-Elsevier Science Ltd; International Journal Of Rock Mechanics And Mining Sciences; 70; 4-2014; 212-2181365-1609CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.ijrmms.2014.05.004info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1365160914001269info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:33:38Zoai:ri.conicet.gov.ar:11336/89347instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:33:38.84CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Seismic velocity and Q anisotropy in fractured poroelastic media |
title |
Seismic velocity and Q anisotropy in fractured poroelastic media |
spellingShingle |
Seismic velocity and Q anisotropy in fractured poroelastic media Santos, Juan Enrique ANISOTROPY ATTENUATION FINITE ELEMENTS FRACTURES POROELASTICITY VELOCITY DISPERSION |
title_short |
Seismic velocity and Q anisotropy in fractured poroelastic media |
title_full |
Seismic velocity and Q anisotropy in fractured poroelastic media |
title_fullStr |
Seismic velocity and Q anisotropy in fractured poroelastic media |
title_full_unstemmed |
Seismic velocity and Q anisotropy in fractured poroelastic media |
title_sort |
Seismic velocity and Q anisotropy in fractured poroelastic media |
dc.creator.none.fl_str_mv |
Santos, Juan Enrique Martinez Corredor, Robiel Carcione, Jose M. |
author |
Santos, Juan Enrique |
author_facet |
Santos, Juan Enrique Martinez Corredor, Robiel Carcione, Jose M. |
author_role |
author |
author2 |
Martinez Corredor, Robiel Carcione, Jose M. |
author2_role |
author author |
dc.subject.none.fl_str_mv |
ANISOTROPY ATTENUATION FINITE ELEMENTS FRACTURES POROELASTICITY VELOCITY DISPERSION |
topic |
ANISOTROPY ATTENUATION FINITE ELEMENTS FRACTURES POROELASTICITY VELOCITY DISPERSION |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
A fluid-saturated poroelastic isotropic medium with aligned fractures behaves as a transversely isotropic and viscoelastic (TIV) medium when the predominant wavelength is much larger than the average distance between fractures. A planar fracture embedded in a fluid saturated poroelastic background medium can be modeled as a extremely thin and compliant porous layer. P-waves traveling in this type of medium induce fluid-pressure gradients at fractures and mesoscopic-scale heterogeneities, generating fluid flow and slow (diffusion) Biot waves, causing attenuation and dispersion of the fast modes (mesoscopic loss). A poroelastic medium with embedded aligned fractures exhibits significant attenuation and dispersion effects due to this mechanism, which can properly be represented at the macroscale with an equivalent TIV medium. In this work, we apply a set of compressibility and shear harmonic finite-element (FE) experiments on fractured highly heterogeneous poroelastic samples to determine the five complex and frequency dependent stiffnesses characterizing the equivalent medium. The experiments consider brine or patchy brine-CO2 saturated samples and a brine saturated sample with a heterogeneous (fractal) skeleton with fractures. We show that fractures induce strong seismic velocity and Q anisotropy, both for qP and qSV waves, enhanced either by patchy saturation or frame heterogeneity. Fil: Santos, Juan Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad de Buenos Aires. Facultad de Ingeniería. Instituto del Gas y del Petróleo; Argentina. Purdue University; Estados Unidos. Universidad Nacional de La Plata; Argentina Fil: Martinez Corredor, Robiel. Universidad Nacional de La Plata. Facultad de Ingeniería; Argentina Fil: Carcione, Jose M.. Istituto Nazionale di Oceanografia e di Geofisica Sperimentale; Italia |
description |
A fluid-saturated poroelastic isotropic medium with aligned fractures behaves as a transversely isotropic and viscoelastic (TIV) medium when the predominant wavelength is much larger than the average distance between fractures. A planar fracture embedded in a fluid saturated poroelastic background medium can be modeled as a extremely thin and compliant porous layer. P-waves traveling in this type of medium induce fluid-pressure gradients at fractures and mesoscopic-scale heterogeneities, generating fluid flow and slow (diffusion) Biot waves, causing attenuation and dispersion of the fast modes (mesoscopic loss). A poroelastic medium with embedded aligned fractures exhibits significant attenuation and dispersion effects due to this mechanism, which can properly be represented at the macroscale with an equivalent TIV medium. In this work, we apply a set of compressibility and shear harmonic finite-element (FE) experiments on fractured highly heterogeneous poroelastic samples to determine the five complex and frequency dependent stiffnesses characterizing the equivalent medium. The experiments consider brine or patchy brine-CO2 saturated samples and a brine saturated sample with a heterogeneous (fractal) skeleton with fractures. We show that fractures induce strong seismic velocity and Q anisotropy, both for qP and qSV waves, enhanced either by patchy saturation or frame heterogeneity. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-04 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/89347 Santos, Juan Enrique; Martinez Corredor, Robiel; Carcione, Jose M.; Seismic velocity and Q anisotropy in fractured poroelastic media; Pergamon-Elsevier Science Ltd; International Journal Of Rock Mechanics And Mining Sciences; 70; 4-2014; 212-218 1365-1609 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/89347 |
identifier_str_mv |
Santos, Juan Enrique; Martinez Corredor, Robiel; Carcione, Jose M.; Seismic velocity and Q anisotropy in fractured poroelastic media; Pergamon-Elsevier Science Ltd; International Journal Of Rock Mechanics And Mining Sciences; 70; 4-2014; 212-218 1365-1609 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ijrmms.2014.05.004 info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1365160914001269 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Pergamon-Elsevier Science Ltd |
publisher.none.fl_str_mv |
Pergamon-Elsevier Science Ltd |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844613035104141312 |
score |
13.070432 |