Modeling attenuation and dispersion of acoustic waves in porous media containing immiscible non viscous fluids

This paper reports the results of the propagation of P-waves in porous media, simulated by solving the generalized Biot´s equations in finite differences. In saturated models, it was observed that when a wave advances, the maximum amplitude of the spectrum is shifted to lower frequencies, and that t...

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Autores:
Duitama Leal, Alejandro
Almanza, Ovidio
Montes Vides, Luis Alfredo
Tipo de recurso:
Article of journal
Fecha de publicación:
2016
Institución:
Universidad Nacional de Colombia
Repositorio:
Universidad Nacional de Colombia
Idioma:
spa
OAI Identifier:
oai:repositorio.unal.edu.co:unal/60483
Acceso en línea:
https://repositorio.unal.edu.co/handle/unal/60483
http://bdigital.unal.edu.co/58815/
Palabra clave:
62 Ingeniería y operaciones afines / Engineering
Biot theory
attenuation
viscosity
saturation
porosity
Teoría de Biot
atenuación
viscosidad
saturación
porosidad
Rights
openAccess
License
Atribución-NoComercial 4.0 Internacional
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spelling Atribución-NoComercial 4.0 InternacionalDerechos reservados - Universidad Nacional de Colombiahttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Duitama Leal, Alejandro50c76b3f-de94-4551-9273-ef5746691eea300Almanza, Ovidio5274dd28-d6e5-4157-a458-87e35d64c650300Montes Vides, Luis Alfredoeae789a9-2910-4a2d-b6b2-c2853daa2d103002019-07-02T18:25:25Z2019-07-02T18:25:25Z2016-10-01ISSN: 2346-2183https://repositorio.unal.edu.co/handle/unal/60483http://bdigital.unal.edu.co/58815/This paper reports the results of the propagation of P-waves in porous media, simulated by solving the generalized Biot´s equations in finite differences. In saturated models, it was observed that when a wave advances, the maximum amplitude of the spectrum is shifted to lower frequencies, and that this maximum amplitude and its frequency are directly related. Besides this, the quality factor decreases with porosity and saturation. Hence, attenuation becomes higher when porosity, saturation, and frequency increase but tends asymptotically towards a constant value. Although phase analysis is generally discarded, it does provide interesting results. It was noted that the wave phase changes linearly with frequency at a rate of change that increases linearly with travel time. This rate increases with saturation but decreases slightly with porosity. This work ignores spherical divergence or scattering and concentrates on intrinsic attenuation caused by friction, particularly between fluids and solid particles.Este artículo reporta resultados de la propagación de ondas P en medios porosos, simulada solucionando en diferencias finitas las ecuaciones generalizadas de Biot. En modelos saturados se observó que cuando avanza la onda, la amplitud máxima del espectro se desplaza hacia frecuencias menores, y que esta amplitud máxima y su frecuencia están directamente relacionadas. Además, que el factor de calidad disminuye con la porosidad y la saturación. Por ende, la atenuación aumenta con la porosidad, la saturación y la frecuencia pero tiende asintóticamente a un valor constante. Se observó que la fase de la onda cambia linealmente con la frecuencia a una rata de cambio que aumenta linealmente con el tiempo de viaje. Esta rata aumenta con la saturación pero disminuye ligeramente con la porosidad. Este trabajo ignora la divergencia esférica y la retro dispersión, concentrándose en la atenuación intrínseca causada por la fricción, en particular entre líquido y partículas sólidas.application/pdfspaUniversidad Nacional de Colombia (Sede Medellín). Facultad de Minas.https://revistas.unal.edu.co/index.php/dyna/article/view/56238Universidad Nacional de Colombia Revistas electrónicas UN DynaDynaDuitama Leal, Alejandro and Almanza, Ovidio and Montes Vides, Luis Alfredo (2016) Modeling attenuation and dispersion of acoustic waves in porous media containing immiscible non viscous fluids. DYNA, 83 (199). pp. 78-85. ISSN 2346-218362 Ingeniería y operaciones afines / EngineeringBiot theoryattenuationviscositysaturationporosityTeoría de BiotatenuaciónviscosidadsaturaciónporosidadModeling attenuation and dispersion of acoustic waves in porous media containing immiscible non viscous fluidsArtículo de revistainfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501http://purl.org/coar/resource_type/c_2df8fbb1http://purl.org/coar/version/c_970fb48d4fbd8a85Texthttp://purl.org/redcol/resource_type/ARTORIGINAL56238-309942-1-PB.pdfapplication/pdf1233989https://repositorio.unal.edu.co/bitstream/unal/60483/1/56238-309942-1-PB.pdf48adc1d7834e5cfb4c73fa11f7a586c7MD51THUMBNAIL56238-309942-1-PB.pdf.jpg56238-309942-1-PB.pdf.jpgGenerated Thumbnailimage/jpeg9078https://repositorio.unal.edu.co/bitstream/unal/60483/2/56238-309942-1-PB.pdf.jpg0b90536089de664c2a3b6ba9a4a795cdMD52unal/60483oai:repositorio.unal.edu.co:unal/604832023-04-07 23:04:31.103Repositorio Institucional Universidad Nacional de Colombiarepositorio_nal@unal.edu.co
dc.title.spa.fl_str_mv Modeling attenuation and dispersion of acoustic waves in porous media containing immiscible non viscous fluids
title Modeling attenuation and dispersion of acoustic waves in porous media containing immiscible non viscous fluids
spellingShingle Modeling attenuation and dispersion of acoustic waves in porous media containing immiscible non viscous fluids
62 Ingeniería y operaciones afines / Engineering
Biot theory
attenuation
viscosity
saturation
porosity
Teoría de Biot
atenuación
viscosidad
saturación
porosidad
title_short Modeling attenuation and dispersion of acoustic waves in porous media containing immiscible non viscous fluids
title_full Modeling attenuation and dispersion of acoustic waves in porous media containing immiscible non viscous fluids
title_fullStr Modeling attenuation and dispersion of acoustic waves in porous media containing immiscible non viscous fluids
title_full_unstemmed Modeling attenuation and dispersion of acoustic waves in porous media containing immiscible non viscous fluids
title_sort Modeling attenuation and dispersion of acoustic waves in porous media containing immiscible non viscous fluids
dc.creator.fl_str_mv Duitama Leal, Alejandro
Almanza, Ovidio
Montes Vides, Luis Alfredo
dc.contributor.author.spa.fl_str_mv Duitama Leal, Alejandro
Almanza, Ovidio
Montes Vides, Luis Alfredo
dc.subject.ddc.spa.fl_str_mv 62 Ingeniería y operaciones afines / Engineering
topic 62 Ingeniería y operaciones afines / Engineering
Biot theory
attenuation
viscosity
saturation
porosity
Teoría de Biot
atenuación
viscosidad
saturación
porosidad
dc.subject.proposal.spa.fl_str_mv Biot theory
attenuation
viscosity
saturation
porosity
Teoría de Biot
atenuación
viscosidad
saturación
porosidad
description This paper reports the results of the propagation of P-waves in porous media, simulated by solving the generalized Biot´s equations in finite differences. In saturated models, it was observed that when a wave advances, the maximum amplitude of the spectrum is shifted to lower frequencies, and that this maximum amplitude and its frequency are directly related. Besides this, the quality factor decreases with porosity and saturation. Hence, attenuation becomes higher when porosity, saturation, and frequency increase but tends asymptotically towards a constant value. Although phase analysis is generally discarded, it does provide interesting results. It was noted that the wave phase changes linearly with frequency at a rate of change that increases linearly with travel time. This rate increases with saturation but decreases slightly with porosity. This work ignores spherical divergence or scattering and concentrates on intrinsic attenuation caused by friction, particularly between fluids and solid particles.
publishDate 2016
dc.date.issued.spa.fl_str_mv 2016-10-01
dc.date.accessioned.spa.fl_str_mv 2019-07-02T18:25:25Z
dc.date.available.spa.fl_str_mv 2019-07-02T18:25:25Z
dc.type.spa.fl_str_mv Artículo de revista
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dc.identifier.issn.spa.fl_str_mv ISSN: 2346-2183
dc.identifier.uri.none.fl_str_mv https://repositorio.unal.edu.co/handle/unal/60483
dc.identifier.eprints.spa.fl_str_mv http://bdigital.unal.edu.co/58815/
identifier_str_mv ISSN: 2346-2183
url https://repositorio.unal.edu.co/handle/unal/60483
http://bdigital.unal.edu.co/58815/
dc.language.iso.spa.fl_str_mv spa
language spa
dc.relation.spa.fl_str_mv https://revistas.unal.edu.co/index.php/dyna/article/view/56238
dc.relation.ispartof.spa.fl_str_mv Universidad Nacional de Colombia Revistas electrónicas UN Dyna
Dyna
dc.relation.references.spa.fl_str_mv Duitama Leal, Alejandro and Almanza, Ovidio and Montes Vides, Luis Alfredo (2016) Modeling attenuation and dispersion of acoustic waves in porous media containing immiscible non viscous fluids. DYNA, 83 (199). pp. 78-85. ISSN 2346-2183
dc.rights.spa.fl_str_mv Derechos reservados - Universidad Nacional de Colombia
dc.rights.coar.fl_str_mv http://purl.org/coar/access_right/c_abf2
dc.rights.license.spa.fl_str_mv Atribución-NoComercial 4.0 Internacional
dc.rights.uri.spa.fl_str_mv http://creativecommons.org/licenses/by-nc/4.0/
dc.rights.accessrights.spa.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv Atribución-NoComercial 4.0 Internacional
Derechos reservados - Universidad Nacional de Colombia
http://creativecommons.org/licenses/by-nc/4.0/
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.mimetype.spa.fl_str_mv application/pdf
dc.publisher.spa.fl_str_mv Universidad Nacional de Colombia (Sede Medellín). Facultad de Minas.
institution Universidad Nacional de Colombia
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