Estimation of Scattering Attenuation from Zero-offset VSP Data: CO2CRC Otway Project Case Study
Seismic attenuation consists of anelastic absorption and scattering loss. Due to the dominance of stratification, the scattering attenuation in the sedimentary crust is dominated by 1-D scattering. In this study we applied an integrated workflow for estimation of attenuation from ZVSP and log data t...
| Main Authors: | , , , |
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| Format: | Conference Paper |
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EAGE
2013
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| Online Access: | http://hdl.handle.net/20.500.11937/41328 |
| _version_ | 1848756114618843136 |
|---|---|
| author | Galvin, R. Müller, T. Pevzner, Roman Gurevich, Boris |
| author2 | EAGE |
| author_facet | EAGE Galvin, R. Müller, T. Pevzner, Roman Gurevich, Boris |
| author_sort | Galvin, R. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Seismic attenuation consists of anelastic absorption and scattering loss. Due to the dominance of stratification, the scattering attenuation in the sedimentary crust is dominated by 1-D scattering. In this study we applied an integrated workflow for estimation of attenuation from ZVSP and log data to a comprehensive dataset acquired at Otway basin. Both 1D reflectivity modeling and application of generalized O’Doherty-Anstey theory to the Otway log data shows that the 1-D scattering component of attenuation gives Q of over 200. At the same time, average Q estimated from field VSP data value is close to 60. Hence we conclude that scattering plays a relatively minor role in the study area. Further research is required to understand whether this conclusion holds in other areas. In particular, scattering attenuation might be larger in environments with larger variability of elastic properties between layers, such as in areas with laminated coal layers. |
| first_indexed | 2025-11-14T09:07:03Z |
| format | Conference Paper |
| id | curtin-20.500.11937-41328 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:07:03Z |
| publishDate | 2013 |
| publisher | EAGE |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-413282018-08-07T23:58:24Z Estimation of Scattering Attenuation from Zero-offset VSP Data: CO2CRC Otway Project Case Study Galvin, R. Müller, T. Pevzner, Roman Gurevich, Boris EAGE Seismic attenuation consists of anelastic absorption and scattering loss. Due to the dominance of stratification, the scattering attenuation in the sedimentary crust is dominated by 1-D scattering. In this study we applied an integrated workflow for estimation of attenuation from ZVSP and log data to a comprehensive dataset acquired at Otway basin. Both 1D reflectivity modeling and application of generalized O’Doherty-Anstey theory to the Otway log data shows that the 1-D scattering component of attenuation gives Q of over 200. At the same time, average Q estimated from field VSP data value is close to 60. Hence we conclude that scattering plays a relatively minor role in the study area. Further research is required to understand whether this conclusion holds in other areas. In particular, scattering attenuation might be larger in environments with larger variability of elastic properties between layers, such as in areas with laminated coal layers. 2013 Conference Paper http://hdl.handle.net/20.500.11937/41328 10.3997/2214-4609.20131839 EAGE fulltext |
| spellingShingle | Galvin, R. Müller, T. Pevzner, Roman Gurevich, Boris Estimation of Scattering Attenuation from Zero-offset VSP Data: CO2CRC Otway Project Case Study |
| title | Estimation of Scattering Attenuation from Zero-offset VSP Data: CO2CRC Otway Project Case Study |
| title_full | Estimation of Scattering Attenuation from Zero-offset VSP Data: CO2CRC Otway Project Case Study |
| title_fullStr | Estimation of Scattering Attenuation from Zero-offset VSP Data: CO2CRC Otway Project Case Study |
| title_full_unstemmed | Estimation of Scattering Attenuation from Zero-offset VSP Data: CO2CRC Otway Project Case Study |
| title_short | Estimation of Scattering Attenuation from Zero-offset VSP Data: CO2CRC Otway Project Case Study |
| title_sort | estimation of scattering attenuation from zero-offset vsp data: co2crc otway project case study |
| url | http://hdl.handle.net/20.500.11937/41328 |