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Experimental results on the combined effects of frequency and pressure on the dispersion of elastic waves in porous rocks

Fortin, Jerome; Piementa, L.; Gueguen, Yves; Schubnel, Alexandre; David, Emmanuel; Adelinet, M.

Description

Experimental results are presented on the dispersive nature of elastic waves in porous rocks. These results show the combined effects of frequency, pressure, and fluid viscosity on the bulk modulus in fluid-saturated sandstone and basalt. At low frequency (0.1 Hz), samples behave as though fully drained: The bulk modulus remains unchanged under argon-, glycerin-, and water-saturated conditions. However, the high-frequency (or unrelaxed) bulk modulus, deduced from ultrasonic velocities, is...[Show more]

dc.contributor.authorFortin, Jerome
dc.contributor.authorPiementa, L.
dc.contributor.authorGueguen, Yves
dc.contributor.authorSchubnel, Alexandre
dc.contributor.authorDavid, Emmanuel
dc.contributor.authorAdelinet, M.
dc.date.accessioned2015-12-13T22:16:37Z
dc.identifier.issn1070-485X
dc.identifier.urihttp://hdl.handle.net/1885/70953
dc.description.abstractExperimental results are presented on the dispersive nature of elastic waves in porous rocks. These results show the combined effects of frequency, pressure, and fluid viscosity on the bulk modulus in fluid-saturated sandstone and basalt. At low frequency (0.1 Hz), samples behave as though fully drained: The bulk modulus remains unchanged under argon-, glycerin-, and water-saturated conditions. However, the high-frequency (or unrelaxed) bulk modulus, deduced from ultrasonic velocities, is clearly modified by the nature of the fluid. In addition, the bulk dispersion between low and high frequencies is significant at low confining pressure when cracks are open and decreases as cracks are closed. Although cracks represent a small fraction of total porosity, they produce a dispersion caused by squirt-flow processes. A simple quantitative model can be used to predict the frequency effect and explain the experimental results well.
dc.publisherSociety of Exploration Geophysicists
dc.sourceLeading Edge, The
dc.titleExperimental results on the combined effects of frequency and pressure on the dispersion of elastic waves in porous rocks
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume33
dc.date.issued2014
local.identifier.absfor040407 - Seismology and Seismic Exploration
local.identifier.absfor040499 - Geophysics not elsewhere classified
local.identifier.ariespublicationU3488905xPUB2484
local.type.statusPublished Version
local.contributor.affiliationFortin, Jerome, École Normale Supérieure
local.contributor.affiliationPiementa, L., Ecole Normale Superieure
local.contributor.affiliationGueguen, Yves, Ecole Normale Superieure
local.contributor.affiliationSchubnel, Alexandre, Ecole Normale Supérieure
local.contributor.affiliationDavid, Emmanuel, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationAdelinet, M., IFP Energies nouvelles
local.description.embargo2037-12-31
local.bibliographicCitation.issue6
local.bibliographicCitation.startpage648
local.bibliographicCitation.lastpage654
local.identifier.doi10.1190/tle33060648.1
local.identifier.absseo850103 - Oil and Gas Exploration
local.identifier.absseo970104 - Expanding Knowledge in the Earth Sciences
dc.date.updated2015-12-11T07:27:49Z
local.identifier.scopusID2-s2.0-84901938557
CollectionsANU Research Publications

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