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dc.contributor.author
Barbosa, Nicolás D.
dc.contributor.author
Rubino, Jorge German
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dc.contributor.author
Caspari, Eva
dc.contributor.author
Milani, Marco
dc.contributor.author
Holliger, Klaus
dc.date.available
2018-06-28T13:39:40Z
dc.date.issued
2016-10-13
dc.identifier.citation
Barbosa, Nicolás D.; Rubino, Jorge German; Caspari, Eva; Milani, Marco; Holliger, Klaus; Fluid pressure diffusion effects on the seismic reflectivity of a single fracture; Acoustical Society of America Institute of Physics; Journal of the Acoustical Society of America; 140; 4; 13-10-2016; 2554-2570
dc.identifier.issn
0001-4966
dc.identifier.uri
http://hdl.handle.net/11336/50311
dc.description.abstract
When seismic waves travel through a fluid-saturated porous medium containing a fracture, fluid pressure gradients are induced between the compliant fracture and the stiffer embedding background. The resulting equilibration through fluid pressure diffusion (FPD) produces a frequency dependence of the stiffening effect of the fluid saturating the fracture. As the reflectivity of a fracture is mainly controlled by the stiffness contrast with respect to the background, these frequency-dependent effects are expected to affect the fracture reflectivity. The present work explores the P- and S-wave reflectivity of a fracture modeled as a thin porous layer separating two half-spaces. Assuming planar wave propagation and P-wave incidence, this article analyzes the FPD effects on the reflection coefficients through comparisons with a low-frequency approximation of the underlying poroelastic model and an elastic model based on Gassmann's equations. The results indicate that, while the impact of global flow on fracture reflectivity is rather small, FPD effects can be significant, especially for P-waves and low incidence angles. These effects get particularly strong for very thin and compliant, liquid-saturated fractures and embedded in a high-permeability background. In particular, this study suggests that in common environments and typical seismic experiments FPD effects can significantly increase the seismic visibility of fractures.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Acoustical Society of America Institute of Physics
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Fractures
dc.subject
Reflectivity
dc.subject
Fluid Pressure Diffusion
dc.subject.classification
Meteorología y Ciencias Atmosféricas
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Fluid pressure diffusion effects on the seismic reflectivity of a single fracture
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-06-06T21:04:34Z
dc.journal.volume
140
dc.journal.number
4
dc.journal.pagination
2554-2570
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
Nueva York
dc.description.fil
Fil: Barbosa, Nicolás D.. Universite de Lausanne; Suiza
dc.description.fil
Fil: Rubino, Jorge German. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Norte; Argentina. University of Western Ontario; Canadá
dc.description.fil
Fil: Caspari, Eva. Universite de Lausanne; Suiza
dc.description.fil
Fil: Milani, Marco. Universite de Lausanne; Suiza
dc.description.fil
Fil: Holliger, Klaus. Universite de Lausanne; Suiza
dc.journal.title
Journal of the Acoustical Society of America
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1121/1.4964339
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://asa.scitation.org/doi/10.1121/1.4964339
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