A dual-porosity scheme for fluid/solid substitution
© 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...
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| Format: | Journal Article |
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Wiley-Blackwell
2016
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| Online Access: | http://hdl.handle.net/20.500.11937/35383 |
| _version_ | 1848754482535464960 |
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| author | Glubokovskikh, Stanislav Gurevich, Boris Saxena, N. |
| author_facet | Glubokovskikh, Stanislav Gurevich, Boris Saxena, N. |
| author_sort | Glubokovskikh, Stanislav |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | © 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. |
| first_indexed | 2025-11-14T08:41:07Z |
| format | Journal Article |
| id | curtin-20.500.11937-35383 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:41:07Z |
| publishDate | 2016 |
| publisher | Wiley-Blackwell |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-353832017-09-13T15:20:29Z A dual-porosity scheme for fluid/solid substitution Glubokovskikh, Stanislav Gurevich, Boris Saxena, N. © 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. 2016 Journal Article http://hdl.handle.net/20.500.11937/35383 10.1111/1365-2478.12389 Wiley-Blackwell restricted |
| spellingShingle | Glubokovskikh, Stanislav Gurevich, Boris Saxena, N. A dual-porosity scheme for fluid/solid substitution |
| title | A dual-porosity scheme for fluid/solid substitution |
| title_full | A dual-porosity scheme for fluid/solid substitution |
| title_fullStr | A dual-porosity scheme for fluid/solid substitution |
| title_full_unstemmed | A dual-porosity scheme for fluid/solid substitution |
| title_short | A dual-porosity scheme for fluid/solid substitution |
| title_sort | dual-porosity scheme for fluid/solid substitution |
| url | http://hdl.handle.net/20.500.11937/35383 |