Show simple item record

dc.contributor.authorGlubokovskikh, Stanislav
dc.contributor.authorGurevich, Boris
dc.contributor.authorSaxena, N.
dc.identifier.citationGlubokovskikh, S. and Gurevich, B. and Saxena, N. 2016. A dual-porosity scheme for fluid/solid substitution. Geophysical Prospecting. 64 (4): pp.1112-1121.

© 2016. Estimating the impact of solid pore fill on effective elastic properties of rocks is important for a number of applications such as seismic monitoring of production of heavy oil or gas hydrates. We develop a simple model relating effective seismic properties of a rock saturated with a liquid, solid, or viscoelastic pore fill, which is assumed to be much softer than the constituent minerals. A key feature of the model is division of porosity into stiff matrix pores and compliant crack-like pores because the presence of a solid material in thin voids stiffens the rock to a much greater extent than its presence in stiff pores. We approximate a typical compliant pore as a plane circular interlayer surrounded by empty pores. The effect of saturation of the stiff pores is then taken into account using generalized Gassmann's equations. The proposed model provides a good fit to measurements of the shear stiffness and loss factor of the Uvalde heavy-oil rock at different temperatures and frequencies. When the pore fill is solid, the predictions of the scheme are close to the predictions of the solid squirt model recently proposed by Saxena and Mavko. At the same time, the present scheme also gives a continuous transition to the classic Gassmann's equations for a liquid pore fill at low frequencies and the squirt theory at high frequencies.

dc.titleA dual-porosity scheme for fluid/solid substitution
dc.typeJournal Article
dcterms.source.titleGeophysical Prospecting
curtin.departmentDepartment of Exploration Geophysics
curtin.accessStatusFulltext not available

Files in this item


There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record