Estimation of anisotropy parameters using the P-wave velocities on a cylindrical shale sample
In this paper we present a new approach to the estimation of the Thomsen anisotropy parameters and symmetry axis coordinates from the P-wave traveltime measurements on cylindrical shale samples. Using the tomography-style array of transducers, we measure the ultrasonic P-wave ray velocities to estim...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Conference Paper |
| Published: |
SEG
2011
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| Online Access: | http://hdl.handle.net/20.500.11937/21568 |
| _version_ | 1848750625618132992 |
|---|---|
| author | Nadri, D. Sarout, J. Bona, Andrej Dewhurst, D. |
| author2 | Society of Exploration Geophysics |
| author_facet | Society of Exploration Geophysics Nadri, D. Sarout, J. Bona, Andrej Dewhurst, D. |
| author_sort | Nadri, D. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | In this paper we present a new approach to the estimation of the Thomsen anisotropy parameters and symmetry axis coordinates from the P-wave traveltime measurements on cylindrical shale samples. Using the tomography-style array of transducers, we measure the ultrasonic P-wave ray velocities to estimate the Thomsen anisotropy parameters for a transversely isotropic shale sample. This approach can be used for core samples cut in any direction with regard to the bedding plane, since we make no assumption about the symmetry axis directions and will estimate it simultaneously with the anisotropy parameters. We use the very fast simulated re-annealing to search for the best possible estimate of the model parameters. The methodology was applied to a synthetic model and an anisotropic shale sample. |
| first_indexed | 2025-11-14T07:39:49Z |
| format | Conference Paper |
| id | curtin-20.500.11937-21568 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:39:49Z |
| publishDate | 2011 |
| publisher | SEG |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-215682018-12-14T00:56:38Z Estimation of anisotropy parameters using the P-wave velocities on a cylindrical shale sample Nadri, D. Sarout, J. Bona, Andrej Dewhurst, D. Society of Exploration Geophysics In this paper we present a new approach to the estimation of the Thomsen anisotropy parameters and symmetry axis coordinates from the P-wave traveltime measurements on cylindrical shale samples. Using the tomography-style array of transducers, we measure the ultrasonic P-wave ray velocities to estimate the Thomsen anisotropy parameters for a transversely isotropic shale sample. This approach can be used for core samples cut in any direction with regard to the bedding plane, since we make no assumption about the symmetry axis directions and will estimate it simultaneously with the anisotropy parameters. We use the very fast simulated re-annealing to search for the best possible estimate of the model parameters. The methodology was applied to a synthetic model and an anisotropic shale sample. 2011 Conference Paper http://hdl.handle.net/20.500.11937/21568 10.1190/1.3627809 SEG fulltext |
| spellingShingle | Nadri, D. Sarout, J. Bona, Andrej Dewhurst, D. Estimation of anisotropy parameters using the P-wave velocities on a cylindrical shale sample |
| title | Estimation of anisotropy parameters using the P-wave velocities on a cylindrical shale sample |
| title_full | Estimation of anisotropy parameters using the P-wave velocities on a cylindrical shale sample |
| title_fullStr | Estimation of anisotropy parameters using the P-wave velocities on a cylindrical shale sample |
| title_full_unstemmed | Estimation of anisotropy parameters using the P-wave velocities on a cylindrical shale sample |
| title_short | Estimation of anisotropy parameters using the P-wave velocities on a cylindrical shale sample |
| title_sort | estimation of anisotropy parameters using the p-wave velocities on a cylindrical shale sample |
| url | http://hdl.handle.net/20.500.11937/21568 |