An analytical study of seismoelectric signals produced by 1-D mesoscopic heterogeneities

Autores
Monachesi, Leonardo Bruno; Rubino, Jorge Germán; Rosas Carbajal, Marina; Jougnot, Damien; Linde, Niklas; Quintal, Beatriz; Holliger, Klaus
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The presence of mesoscopic heterogeneities in fluid-saturated porous rocks can produce measurable seismoelectric signals due to wave-induced fluid flow between regions of differing compressibility. The dependence of these signals on the petrophysical and structural characteristics of the probed rock mass remains largely unexplored. In this work, we derive an analytical solution to describe the seismoelectric response of a rock sample, containing a horizontal layer at its centre, that is subjected to an oscillatory compressibility test. We then adapt this general solution to compute the seismoelectric signature of a particular case related to a sample that is permeated by a horizontal fracture located at its centre. Analyses of the general and particular solutions are performed to study the impact of different petrophysical and structural parameters on the seismoelectric response. We find that the amplitude of the seismoelectric signal is directly proportional to the applied stress, to the Skempton coefficient contrast between the host rock and the layer, and to a weighted average of the effective excess charge of the two materials. Our results also demonstrate that the frequency at which the maximum electrical potential amplitude prevails does not depend on the applied stress or the Skempton coefficient contrast. In presence of strong permeability variations, this frequency is rather controlled by the permeability and thickness of the less permeable material. The results of this study thus indicate that seismoelectric measurements can potentially be used to estimate key mechanical and hydraulic rock properties of mesoscopic heterogeneities, such as compressibility, permeability and fracture compliance.
Facultad de Ciencias Astronómicas y Geofísicas
Materia
Ciencias Astronómicas
Electrical properties
Fracture and flow
Hydrogeophysics
Permeability and porosity
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/86064

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oai_identifier_str oai:sedici.unlp.edu.ar:10915/86064
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network_name_str SEDICI (UNLP)
spelling An analytical study of seismoelectric signals produced by 1-D mesoscopic heterogeneitiesMonachesi, Leonardo BrunoRubino, Jorge GermánRosas Carbajal, MarinaJougnot, DamienLinde, NiklasQuintal, BeatrizHolliger, KlausCiencias AstronómicasElectrical propertiesFracture and flowHydrogeophysicsPermeability and porosityThe presence of mesoscopic heterogeneities in fluid-saturated porous rocks can produce measurable seismoelectric signals due to wave-induced fluid flow between regions of differing compressibility. The dependence of these signals on the petrophysical and structural characteristics of the probed rock mass remains largely unexplored. In this work, we derive an analytical solution to describe the seismoelectric response of a rock sample, containing a horizontal layer at its centre, that is subjected to an oscillatory compressibility test. We then adapt this general solution to compute the seismoelectric signature of a particular case related to a sample that is permeated by a horizontal fracture located at its centre. Analyses of the general and particular solutions are performed to study the impact of different petrophysical and structural parameters on the seismoelectric response. We find that the amplitude of the seismoelectric signal is directly proportional to the applied stress, to the Skempton coefficient contrast between the host rock and the layer, and to a weighted average of the effective excess charge of the two materials. Our results also demonstrate that the frequency at which the maximum electrical potential amplitude prevails does not depend on the applied stress or the Skempton coefficient contrast. In presence of strong permeability variations, this frequency is rather controlled by the permeability and thickness of the less permeable material. The results of this study thus indicate that seismoelectric measurements can potentially be used to estimate key mechanical and hydraulic rock properties of mesoscopic heterogeneities, such as compressibility, permeability and fracture compliance.Facultad de Ciencias Astronómicas y Geofísicas2015info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf329-342http://sedici.unlp.edu.ar/handle/10915/86064enginfo:eu-repo/semantics/altIdentifier/issn/0956-540Xinfo:eu-repo/semantics/altIdentifier/doi/10.1093/gji/ggu482info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:17:00Zoai:sedici.unlp.edu.ar:10915/86064Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:17:00.352SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv An analytical study of seismoelectric signals produced by 1-D mesoscopic heterogeneities
title An analytical study of seismoelectric signals produced by 1-D mesoscopic heterogeneities
spellingShingle An analytical study of seismoelectric signals produced by 1-D mesoscopic heterogeneities
Monachesi, Leonardo Bruno
Ciencias Astronómicas
Electrical properties
Fracture and flow
Hydrogeophysics
Permeability and porosity
title_short An analytical study of seismoelectric signals produced by 1-D mesoscopic heterogeneities
title_full An analytical study of seismoelectric signals produced by 1-D mesoscopic heterogeneities
title_fullStr An analytical study of seismoelectric signals produced by 1-D mesoscopic heterogeneities
title_full_unstemmed An analytical study of seismoelectric signals produced by 1-D mesoscopic heterogeneities
title_sort An analytical study of seismoelectric signals produced by 1-D mesoscopic heterogeneities
dc.creator.none.fl_str_mv Monachesi, Leonardo Bruno
Rubino, Jorge Germán
Rosas Carbajal, Marina
Jougnot, Damien
Linde, Niklas
Quintal, Beatriz
Holliger, Klaus
author Monachesi, Leonardo Bruno
author_facet Monachesi, Leonardo Bruno
Rubino, Jorge Germán
Rosas Carbajal, Marina
Jougnot, Damien
Linde, Niklas
Quintal, Beatriz
Holliger, Klaus
author_role author
author2 Rubino, Jorge Germán
Rosas Carbajal, Marina
Jougnot, Damien
Linde, Niklas
Quintal, Beatriz
Holliger, Klaus
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
Electrical properties
Fracture and flow
Hydrogeophysics
Permeability and porosity
topic Ciencias Astronómicas
Electrical properties
Fracture and flow
Hydrogeophysics
Permeability and porosity
dc.description.none.fl_txt_mv The presence of mesoscopic heterogeneities in fluid-saturated porous rocks can produce measurable seismoelectric signals due to wave-induced fluid flow between regions of differing compressibility. The dependence of these signals on the petrophysical and structural characteristics of the probed rock mass remains largely unexplored. In this work, we derive an analytical solution to describe the seismoelectric response of a rock sample, containing a horizontal layer at its centre, that is subjected to an oscillatory compressibility test. We then adapt this general solution to compute the seismoelectric signature of a particular case related to a sample that is permeated by a horizontal fracture located at its centre. Analyses of the general and particular solutions are performed to study the impact of different petrophysical and structural parameters on the seismoelectric response. We find that the amplitude of the seismoelectric signal is directly proportional to the applied stress, to the Skempton coefficient contrast between the host rock and the layer, and to a weighted average of the effective excess charge of the two materials. Our results also demonstrate that the frequency at which the maximum electrical potential amplitude prevails does not depend on the applied stress or the Skempton coefficient contrast. In presence of strong permeability variations, this frequency is rather controlled by the permeability and thickness of the less permeable material. The results of this study thus indicate that seismoelectric measurements can potentially be used to estimate key mechanical and hydraulic rock properties of mesoscopic heterogeneities, such as compressibility, permeability and fracture compliance.
Facultad de Ciencias Astronómicas y Geofísicas
description The presence of mesoscopic heterogeneities in fluid-saturated porous rocks can produce measurable seismoelectric signals due to wave-induced fluid flow between regions of differing compressibility. The dependence of these signals on the petrophysical and structural characteristics of the probed rock mass remains largely unexplored. In this work, we derive an analytical solution to describe the seismoelectric response of a rock sample, containing a horizontal layer at its centre, that is subjected to an oscillatory compressibility test. We then adapt this general solution to compute the seismoelectric signature of a particular case related to a sample that is permeated by a horizontal fracture located at its centre. Analyses of the general and particular solutions are performed to study the impact of different petrophysical and structural parameters on the seismoelectric response. We find that the amplitude of the seismoelectric signal is directly proportional to the applied stress, to the Skempton coefficient contrast between the host rock and the layer, and to a weighted average of the effective excess charge of the two materials. Our results also demonstrate that the frequency at which the maximum electrical potential amplitude prevails does not depend on the applied stress or the Skempton coefficient contrast. In presence of strong permeability variations, this frequency is rather controlled by the permeability and thickness of the less permeable material. The results of this study thus indicate that seismoelectric measurements can potentially be used to estimate key mechanical and hydraulic rock properties of mesoscopic heterogeneities, such as compressibility, permeability and fracture compliance.
publishDate 2015
dc.date.none.fl_str_mv 2015
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/86064
url http://sedici.unlp.edu.ar/handle/10915/86064
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0956-540X
info:eu-repo/semantics/altIdentifier/doi/10.1093/gji/ggu482
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
329-342
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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