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https://hdl.handle.net/2440/64005
Type: | Conference paper |
Title: | Velocity and attenuation dispersion relations for the effective biot double porosity model: total field formulation |
Author: | Greenhalgh, S. Liu, X. Zhou, B. |
Citation: | Proceedings of 16th European Meeting of Environmental and Engineering Geophysics, 2010;. pp.1-4 |
Publisher: | EAGE |
Publisher Place: | CD |
Issue Date: | 2010 |
Conference Name: | European Meeting of Environmental and Engineering Geophysics (16th : 2010 : Zurich, Switzerland) |
Statement of Responsibility: | S.A. Greenhalgh, X. Liu and B. Zhou |
Abstract: | Two approaches - the host phase fields and the total fields - have been applied to formulate the effective Biot governing equations from the double-porosity, dual permeability model. The host phase formulation, given previously by Pride and Berryman (2003) is made under the assumption that the volume fraction of phase 2 (the inclusions) is very small. The total-field formulation is new and has no such limitation and gives rise to more general equations which cover the host phase field approach as a special case. We have computed the phase velocity and attenuation dispersion curves for the fast and slow Biot compressional waves using both approaches for a sample rock of water-saturated sandstone having sand as the inclusions. The curves are consistent across a wide frequency range for the fast P wave but deviate at higher frequencies and for large volume fractions of the inclusions .For the slow P wave there is a significantly increasing discrepancy in wavespeed as frequency increases, even for low inclusion concentrations. |
Rights: | Copyright status unknown |
Description (link): | http://www.earthdoc.org/detail.php?pubid=41038 |
Appears in Collections: | Aurora harvest 5 Physics publications |
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