Proceedings of the 69th Conference and Exhibition
Mesoscale heterogeneities occur on a spatial scale, which is greater than pore-scale but less than wavelength scale. The presence of mesoscale heterogeneities in saturating fluids within porous rock causes significant attenuation and phase velocity dispersion. In particular, both contrast in fluid p...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Conference Paper |
| Published: |
Co-productions
2007
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| Online Access: | http://hdl.handle.net/20.500.11937/26048 |
| _version_ | 1848751875013214208 |
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| author | Toms, Julianna Gurevich, Boris Muller, Tobias Johnson, D. |
| author2 | EAGE |
| author_facet | EAGE Toms, Julianna Gurevich, Boris Muller, Tobias Johnson, D. |
| author_sort | Toms, Julianna |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Mesoscale heterogeneities occur on a spatial scale, which is greater than pore-scale but less than wavelength scale. The presence of mesoscale heterogeneities in saturating fluids within porous rock causes significant attenuation and phase velocity dispersion. In particular, both contrast in fluid properties and spatial distribution of fluids significantly affects attenuation and dispersion. Thus patchy saturation models need to be flexible in order to account for both contrast and distribution effects. In particular, models which allow arbitrary fluid distributions assume low contrast (or small concentrations) in fluid properties; whilst models which account for fluid contrast assume a fixed periodic distribution of heterogeneities. Here we construct a general model which takes into account both fluid contrast and distribution. We utilize the existing Acoustics of Patchy Saturation (APS) framework of Johnson, which was originally designed for periodically distributed fluid heterogeneities of any contrast. Our approach is to suitably modify specific parameters known as shape and frequency scaling parameters. We do this by analysing and comparing the asymptotic behaviour between different theories to understand how these parameterschange with distribution and contrast. Our new parameters allow modelling of attenuation and dispersion due to arbitrary fluid distributions in 1D and 3D random structures. |
| first_indexed | 2025-11-14T07:59:40Z |
| format | Conference Paper |
| id | curtin-20.500.11937-26048 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:59:40Z |
| publishDate | 2007 |
| publisher | Co-productions |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-260482017-01-30T12:51:31Z Proceedings of the 69th Conference and Exhibition Toms, Julianna Gurevich, Boris Muller, Tobias Johnson, D. EAGE Mesoscale heterogeneities occur on a spatial scale, which is greater than pore-scale but less than wavelength scale. The presence of mesoscale heterogeneities in saturating fluids within porous rock causes significant attenuation and phase velocity dispersion. In particular, both contrast in fluid properties and spatial distribution of fluids significantly affects attenuation and dispersion. Thus patchy saturation models need to be flexible in order to account for both contrast and distribution effects. In particular, models which allow arbitrary fluid distributions assume low contrast (or small concentrations) in fluid properties; whilst models which account for fluid contrast assume a fixed periodic distribution of heterogeneities. Here we construct a general model which takes into account both fluid contrast and distribution. We utilize the existing Acoustics of Patchy Saturation (APS) framework of Johnson, which was originally designed for periodically distributed fluid heterogeneities of any contrast. Our approach is to suitably modify specific parameters known as shape and frequency scaling parameters. We do this by analysing and comparing the asymptotic behaviour between different theories to understand how these parameterschange with distribution and contrast. Our new parameters allow modelling of attenuation and dispersion due to arbitrary fluid distributions in 1D and 3D random structures. 2007 Conference Paper http://hdl.handle.net/20.500.11937/26048 Co-productions restricted |
| spellingShingle | Toms, Julianna Gurevich, Boris Muller, Tobias Johnson, D. Proceedings of the 69th Conference and Exhibition |
| title | Proceedings of the 69th Conference and Exhibition |
| title_full | Proceedings of the 69th Conference and Exhibition |
| title_fullStr | Proceedings of the 69th Conference and Exhibition |
| title_full_unstemmed | Proceedings of the 69th Conference and Exhibition |
| title_short | Proceedings of the 69th Conference and Exhibition |
| title_sort | proceedings of the 69th conference and exhibition |
| url | http://hdl.handle.net/20.500.11937/26048 |