Stress dependency of elastic properties of shales: the effect of uniaxial stress
Understanding seismic anisotropy in shales is important for quantitative interpretation of seismic data, 4D monitoring and pore pressure prediction. Along with intrinsic anisotropy caused by preferred mineral orientation that is common in shales, anisotropic stress is an important factor that affect...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Conference Paper |
| Published: |
SEG
2011
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| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/13805 |
| _version_ | 1848748444577955840 |
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| author | Pervukhina, M. Gurevich, Boris Golodoniuc, Pavel Dewhurst, D. |
| author2 | Society of Exploration Geophysics |
| author_facet | Society of Exploration Geophysics Pervukhina, M. Gurevich, Boris Golodoniuc, Pavel Dewhurst, D. |
| author_sort | Pervukhina, M. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Understanding seismic anisotropy in shales is important for quantitative interpretation of seismic data, 4D monitoring and pore pressure prediction. Along with intrinsic anisotropy caused by preferred mineral orientation that is common in shales, anisotropic stress is an important factor that affects shale elastic response. While variations of elastic coefficients with anisotropic stress have been the subject of experimental studies, theoretical insight is still largely lacking. Here we suggest a new model that allows parameterization of the stress dependency of elastic coefficients of shales under anisotropic stress conditions. We show that the parameterization requires four parameters, namely, specific tangential compliance of a single crack, the ratio of normal to tangential compliances, characteristic pressure and a crack orientation anisotropy parameter. These parameters can be estimated from experimentally measured stress sensitivity of elastic coefficients in shales to isotropic stress. |
| first_indexed | 2025-11-14T07:05:09Z |
| format | Conference Paper |
| id | curtin-20.500.11937-13805 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:05:09Z |
| publishDate | 2011 |
| publisher | SEG |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-138052018-12-14T00:48:39Z Stress dependency of elastic properties of shales: the effect of uniaxial stress Pervukhina, M. Gurevich, Boris Golodoniuc, Pavel Dewhurst, D. Society of Exploration Geophysics 4D modeling rock physics elastic anisotropy Understanding seismic anisotropy in shales is important for quantitative interpretation of seismic data, 4D monitoring and pore pressure prediction. Along with intrinsic anisotropy caused by preferred mineral orientation that is common in shales, anisotropic stress is an important factor that affects shale elastic response. While variations of elastic coefficients with anisotropic stress have been the subject of experimental studies, theoretical insight is still largely lacking. Here we suggest a new model that allows parameterization of the stress dependency of elastic coefficients of shales under anisotropic stress conditions. We show that the parameterization requires four parameters, namely, specific tangential compliance of a single crack, the ratio of normal to tangential compliances, characteristic pressure and a crack orientation anisotropy parameter. These parameters can be estimated from experimentally measured stress sensitivity of elastic coefficients in shales to isotropic stress. 2011 Conference Paper http://hdl.handle.net/20.500.11937/13805 10.1190/1.3627669 SEG fulltext |
| spellingShingle | 4D modeling rock physics elastic anisotropy Pervukhina, M. Gurevich, Boris Golodoniuc, Pavel Dewhurst, D. Stress dependency of elastic properties of shales: the effect of uniaxial stress |
| title | Stress dependency of elastic properties of shales: the effect of uniaxial stress |
| title_full | Stress dependency of elastic properties of shales: the effect of uniaxial stress |
| title_fullStr | Stress dependency of elastic properties of shales: the effect of uniaxial stress |
| title_full_unstemmed | Stress dependency of elastic properties of shales: the effect of uniaxial stress |
| title_short | Stress dependency of elastic properties of shales: the effect of uniaxial stress |
| title_sort | stress dependency of elastic properties of shales: the effect of uniaxial stress |
| topic | 4D modeling rock physics elastic anisotropy |
| url | http://hdl.handle.net/20.500.11937/13805 |