Microstructural effects on mechanical properties of shaly sandstone
Understanding the mechanical properties of shaly sandstone is of great importance in reservoir geomechanics. Because of the lack of core data, measurements based on acoustic wave velocities are often conducted. In such measurements, the mechanical properties such as uniaxial compressive strength (UC...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Journal Article |
| Published: |
American Society of Civil Engineers
2018
|
| Online Access: | http://hdl.handle.net/20.500.11937/60898 |
| _version_ | 1848760644019421184 |
|---|---|
| author | Roshan, H. Masoumi, H. Zhang, Y. Al-Yaseri, A. Iglauer, Stefan Lebedev, Maxim Sarmadivaleh, Mohammad |
| author_facet | Roshan, H. Masoumi, H. Zhang, Y. Al-Yaseri, A. Iglauer, Stefan Lebedev, Maxim Sarmadivaleh, Mohammad |
| author_sort | Roshan, H. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Understanding the mechanical properties of shaly sandstone is of great importance in reservoir geomechanics. Because of the lack of core data, measurements based on acoustic wave velocities are often conducted. In such measurements, the mechanical properties such as uniaxial compressive strength (UCS) and Young's modulus (E) are related to the porosity of sandstone and shaly sandstone. However, in many instances, the porosity fails to directly correlate to mechanical properties especially when dispersed clays are present. Therefore, in this study, a set of uniaxial compressive tests on a number of different shaly sandstones was performed. The X-ray computed tomography was conducted on the representative samples from each type of sandstone to assess the porosity, rock composition, and texture. Independent compositional analysis was also carried out on all representative samples to link the samples' composition to their microstructure. Interestingly, it was found that the mechanical properties of these shaly sandstones are well-correlated to the combined clay volume and effective porosity in a multivariate analysis. It was concluded that the univariate analysis solely performed on porosity cannot always correlate well to the mechanical properties of sandstone containing clays. Therefore, a combination of clay volume and effective porosity is more accurately correlated to mechanical properties. |
| first_indexed | 2025-11-14T10:19:03Z |
| format | Journal Article |
| id | curtin-20.500.11937-60898 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:19:03Z |
| publishDate | 2018 |
| publisher | American Society of Civil Engineers |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-608982018-07-04T01:41:43Z Microstructural effects on mechanical properties of shaly sandstone Roshan, H. Masoumi, H. Zhang, Y. Al-Yaseri, A. Iglauer, Stefan Lebedev, Maxim Sarmadivaleh, Mohammad Understanding the mechanical properties of shaly sandstone is of great importance in reservoir geomechanics. Because of the lack of core data, measurements based on acoustic wave velocities are often conducted. In such measurements, the mechanical properties such as uniaxial compressive strength (UCS) and Young's modulus (E) are related to the porosity of sandstone and shaly sandstone. However, in many instances, the porosity fails to directly correlate to mechanical properties especially when dispersed clays are present. Therefore, in this study, a set of uniaxial compressive tests on a number of different shaly sandstones was performed. The X-ray computed tomography was conducted on the representative samples from each type of sandstone to assess the porosity, rock composition, and texture. Independent compositional analysis was also carried out on all representative samples to link the samples' composition to their microstructure. Interestingly, it was found that the mechanical properties of these shaly sandstones are well-correlated to the combined clay volume and effective porosity in a multivariate analysis. It was concluded that the univariate analysis solely performed on porosity cannot always correlate well to the mechanical properties of sandstone containing clays. Therefore, a combination of clay volume and effective porosity is more accurately correlated to mechanical properties. 2018 Journal Article http://hdl.handle.net/20.500.11937/60898 10.1061/(ASCE)GT.1943-5606.0001831 American Society of Civil Engineers restricted |
| spellingShingle | Roshan, H. Masoumi, H. Zhang, Y. Al-Yaseri, A. Iglauer, Stefan Lebedev, Maxim Sarmadivaleh, Mohammad Microstructural effects on mechanical properties of shaly sandstone |
| title | Microstructural effects on mechanical properties of shaly sandstone |
| title_full | Microstructural effects on mechanical properties of shaly sandstone |
| title_fullStr | Microstructural effects on mechanical properties of shaly sandstone |
| title_full_unstemmed | Microstructural effects on mechanical properties of shaly sandstone |
| title_short | Microstructural effects on mechanical properties of shaly sandstone |
| title_sort | microstructural effects on mechanical properties of shaly sandstone |
| url | http://hdl.handle.net/20.500.11937/60898 |