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dc.contributor.author
Rubino, Jorge German
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dc.contributor.author
Müller, Tobias M.
dc.contributor.author
Guarracino, Luis
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dc.contributor.author
Milani, Marco
dc.contributor.author
Holliger, Klaus
dc.date.available
2017-12-22T19:04:20Z
dc.date.issued
2014-03
dc.identifier.citation
Holliger, Klaus; Milani, Marco; Guarracino, Luis; Müller, Tobias M.; Rubino, Jorge German; Seismoacoustic signatures of fracture connectivity; American Geophysical Union; Journal of Geophysical Research; 119; 3; 3-2014; 2252-2271
dc.identifier.issn
0148-0227
dc.identifier.uri
http://hdl.handle.net/11336/31406
dc.description.abstract
Wave-induced fluid flow (WIFF) between fractures and the embedding matrix as well as within connected fractures tends to produce significant seismic attenuation and velocity dispersion. While WIFF between fractures and matrix is well understood, the corresponding effects related to fracture connectivity and the characteristics of the energy dissipation due to flow within fractures are largely unexplored. In this work, we use oscillatory relaxation simulations based on the quasi-static poroelastic equations to study these phenomena. We first consider synthetic rock samples containing connected and unconnected fractures and compute the corresponding attenuation and phase velocity. We also determine the relative fluid displacement and pressure fields in order to gain insight into the physical processes involved in the two manifestations of WIFF in fractured media. To quantify the contributions of the two WIFF mechanisms to the total seismic attenuation, we compute the spatial distribution of the local energy dissipation. Finally, we perform an exhaustive sensitivity analysis to study the role played by different characteristics of fracture networks on the seismic signatures. We show that in the presence of connected fractures both P wave attenuation and phase velocity are sensitive to some key characteristics of the probed medium, notably to the lengths, permeabilities, and intersection angles of the fractures as well as to the overall degree of connectivity of the fracture network. This, in turn, indicates that a deeper understanding of these two manifestations of WIFF in fractured media may eventually allow for the extraction of some of these properties from seismic data.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Geophysical Union
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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
Acoustic Properties
dc.subject
Fracture And Flow
dc.subject
Seismic Methods
dc.subject
Wave Attenuation
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
Seismoacoustic signatures of fracture connectivity
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-12-21T19:59:20Z
dc.journal.volume
119
dc.journal.number
3
dc.journal.pagination
2252-2271
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
Hoboken
dc.description.fil
Fil: Rubino, Jorge German. Universite de Lausanne; Suiza. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Müller, Tobias M.. Commonwealth Scientific and Industrial Research Organization; Australia
dc.description.fil
Fil: Guarracino, Luis. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
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 Geophysical Research
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/2013JB010567
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/2013JB010567/abstract
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