Shear Wave Splitting Analysis to Estimate Fracture Orientation and Frequency Dependent Anisotropy
Shear wave splitting is a well-known method for indication of orientation, radius, and length of fractures in subsurface layers. In this paper, a three component near offset VSP data acquired from a fractured sandstone reservoir in southern part of Iran was used to analyse shear wave splitting and f...
| Main Authors: | , , , |
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| Format: | Journal Article |
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Polska Akademia Nauk * Instytut Geofizyki
2016
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| Online Access: | http://hdl.handle.net/20.500.11937/41503 |
| _version_ | 1848756164215439360 |
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| author | Gholami, Raoof Moradzadeh, A. Rasouli, V. Hanachi, J. |
| author_facet | Gholami, Raoof Moradzadeh, A. Rasouli, V. Hanachi, J. |
| author_sort | Gholami, Raoof |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Shear wave splitting is a well-known method for indication of orientation, radius, and length of fractures in subsurface layers. In this paper, a three component near offset VSP data acquired from a fractured sandstone reservoir in southern part of Iran was used to analyse shear wave splitting and frequency-dependent anisotropy assessment. Polarization angle obtained by performing rotation on radial and transverse components of VSP data was used to determine the direction of polarization of fast shear wave which corresponds to direction of fractures. It was shown that correct implementation of shear wave splitting analysis can be used for determination of fracture direction. During frequency- dependent anisotropy analysis, it was found that the time delays in shear- waves decrease as the frequency increases. It was clearly demonstrated throughout this study that anisotropy may have an inverse relationship with frequency. The analysis presented in this paper complements the studied conducted by other researchers in this field of research. |
| first_indexed | 2025-11-14T09:07:51Z |
| format | Journal Article |
| id | curtin-20.500.11937-41503 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:07:51Z |
| publishDate | 2016 |
| publisher | Polska Akademia Nauk * Instytut Geofizyki |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-415032017-09-13T14:13:04Z Shear Wave Splitting Analysis to Estimate Fracture Orientation and Frequency Dependent Anisotropy Gholami, Raoof Moradzadeh, A. Rasouli, V. Hanachi, J. Shear wave splitting is a well-known method for indication of orientation, radius, and length of fractures in subsurface layers. In this paper, a three component near offset VSP data acquired from a fractured sandstone reservoir in southern part of Iran was used to analyse shear wave splitting and frequency-dependent anisotropy assessment. Polarization angle obtained by performing rotation on radial and transverse components of VSP data was used to determine the direction of polarization of fast shear wave which corresponds to direction of fractures. It was shown that correct implementation of shear wave splitting analysis can be used for determination of fracture direction. During frequency- dependent anisotropy analysis, it was found that the time delays in shear- waves decrease as the frequency increases. It was clearly demonstrated throughout this study that anisotropy may have an inverse relationship with frequency. The analysis presented in this paper complements the studied conducted by other researchers in this field of research. 2016 Journal Article http://hdl.handle.net/20.500.11937/41503 10.1515/acgeo-2015-0060 http://creativecommons.org/licenses/by-nc-nd/3.0/ Polska Akademia Nauk * Instytut Geofizyki fulltext |
| spellingShingle | Gholami, Raoof Moradzadeh, A. Rasouli, V. Hanachi, J. Shear Wave Splitting Analysis to Estimate Fracture Orientation and Frequency Dependent Anisotropy |
| title | Shear Wave Splitting Analysis to Estimate Fracture Orientation and Frequency Dependent Anisotropy |
| title_full | Shear Wave Splitting Analysis to Estimate Fracture Orientation and Frequency Dependent Anisotropy |
| title_fullStr | Shear Wave Splitting Analysis to Estimate Fracture Orientation and Frequency Dependent Anisotropy |
| title_full_unstemmed | Shear Wave Splitting Analysis to Estimate Fracture Orientation and Frequency Dependent Anisotropy |
| title_short | Shear Wave Splitting Analysis to Estimate Fracture Orientation and Frequency Dependent Anisotropy |
| title_sort | shear wave splitting analysis to estimate fracture orientation and frequency dependent anisotropy |
| url | http://hdl.handle.net/20.500.11937/41503 |