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dc.contributor.authorMuller, Tobias
dc.contributor.authorLambert, Gracjan
dc.contributor.authorGurevich, Boris
dc.date.accessioned2017-01-30T13:56:12Z
dc.date.available2017-01-30T13:56:12Z
dc.date.created2009-03-05T00:57:31Z
dc.date.issued2007
dc.identifier.citationMuller, Tobias and Lambert, Gracjan and Gurevich, Boris. 2007. Dynamic permeability of porous rocks and its seismic signatures. Geophysics. 72 (5): pp. E149-E158.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/36532
dc.identifier.doi10.1190/1.2749571
dc.description.abstract

In inhomogeneous porous media, the mechanism of wave-induced fluid flow causes significant attenuation and dispersion of seismic waves. In connection with this phenomenon, we study the impact of spatial permeability fluctuations on the dynamic behavior of porous materials. This heterogeneous permeability distribution further complicates the ongoing efforts to extract flow permeability from seismic data. Based on the method of statistical smoothing applied to Biot's equations of poroelasticity, we derive models for the dynamic-equivalent permeability in 1D and 3D randomly inhomogeneous media. The low-frequency limit of this permeability corresponds to the flow permeability governing fluid flow in porous media. We incorporate the dynamic-equivalent permeability model into the expressions for attenuation and dispersion of P-waves, also obtained by the method of smoothing. The resulting attenuation and dispersion model is confirmed by numerical computations in randomly layered poroelastic structures. The results suggest that the effect of wave-induced fluid flow can be observed in a broader frequency range than previously thought. The peak attenuation shifts along the frequency axis depending on the strength of the permeability fluctuations. We conclude that estimation of flow permeability from seismic attenuation is only possible if permeability fluctuations are properly accounted for.

dc.publisherSociety of Exploration Geophysics
dc.titleDynamic permeability of porous rocks and its seismic signatures
dc.typeJournal Article
dcterms.source.volume72
dcterms.source.number5
dcterms.source.startPageE149
dcterms.source.endPageE158
dcterms.source.issn00168033
dcterms.source.titleGeophysics
curtin.note

Published by the Society of Exploration Geophysicists.

curtin.note

Copyright © 2007 Society of Exploration Geophysicists.

curtin.note

The link to the journal’s home page is: http://segdl.aip.org/geophysics

curtin.departmentDepartment of Exploration Geophysics
curtin.accessStatusOpen access


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