Estimation of Seismic Wave Attenuation from 3D Seismic Data: A Case Study of OBC Data Acquired in an Offshore Oilfield
Previous studies performed in Abu Dhabi oilfields, United Arab Emirates, revealed the direct link of seismic wave attenuation to petrophysical properties of rocks. However, all those studies were based on zero offset VSP data, which limits the attenuation estimation at one location only. This is due...
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MDPI AG
2022-01-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/15/2/534 |
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| author | Fateh Bouchaala Mohammed Y. Ali Jun Matsushima Youcef Bouzidi Mohammed S. Jouini Eric M. Takougang Aala A. Mohamed |
| author_facet | Fateh Bouchaala Mohammed Y. Ali Jun Matsushima Youcef Bouzidi Mohammed S. Jouini Eric M. Takougang Aala A. Mohamed |
| author_sort | Fateh Bouchaala |
| collection | DOAJ |
| description | Previous studies performed in Abu Dhabi oilfields, United Arab Emirates, revealed the direct link of seismic wave attenuation to petrophysical properties of rocks. However, all those studies were based on zero offset VSP data, which limits the attenuation estimation at one location only. This is due to the difficulty of estimating attenuation from 3D seismic data, especially in carbonate rocks. To overcome this difficulty, we developed a workflow based on the centroid frequency shift method and Gabor transform which is optimized by using VSP data. The workflow was applied on 3D Ocean Bottom Cable seismic data. Distinct attenuation anomalies were observed in highly heterogeneous and saturated zones, such as the reservoirs and aquifers. Scattering shows significant contribution in attenuation anomalies, which is unusual in sandstones. This is due to the complex texture and heterogeneous nature of carbonate rocks. Furthermore, attenuation mechanisms such as frictional relative movement between fluids and solid grains, are most likely other important causes of attenuation anomalies. The slight lateral variation of attenuation reflects the lateral homogeneous stratigraphy of the oilfield. The results demonstrate the potential of seismic wave attenuation for delineating heterogeneous zones with high fluid content, which can substantially help for enhancing oil recovery. |
| first_indexed | 2024-03-10T01:33:51Z |
| format | Article |
| id | doaj.art-b39d4c58c02d479aa4a6f9dcf1694f5d |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T01:33:51Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-b39d4c58c02d479aa4a6f9dcf1694f5d2023-11-23T13:37:48ZengMDPI AGEnergies1996-10732022-01-0115253410.3390/en15020534Estimation of Seismic Wave Attenuation from 3D Seismic Data: A Case Study of OBC Data Acquired in an Offshore OilfieldFateh Bouchaala0Mohammed Y. Ali1Jun Matsushima2Youcef Bouzidi3Mohammed S. Jouini4Eric M. Takougang5Aala A. Mohamed6Department of Earth Sciences, Khalifa University, Abu Dhabi P.O. Box 127788, United Arab EmiratesDepartment of Earth Sciences, Khalifa University, Abu Dhabi P.O. Box 127788, United Arab EmiratesDepartment of Environment Systems, The University of Tokyo, Tokyo 113-8654, JapanDepartment of Earth Sciences, Khalifa University, Abu Dhabi P.O. Box 127788, United Arab EmiratesDepartment of Mathematics, Khalifa University, Abu Dhabi P.O. Box 127788, United Arab EmiratesDepartment of Physics, University of Buea, Buea 99999, CameroonDepartment of Earth Sciences, Khalifa University, Abu Dhabi P.O. Box 127788, United Arab EmiratesPrevious studies performed in Abu Dhabi oilfields, United Arab Emirates, revealed the direct link of seismic wave attenuation to petrophysical properties of rocks. However, all those studies were based on zero offset VSP data, which limits the attenuation estimation at one location only. This is due to the difficulty of estimating attenuation from 3D seismic data, especially in carbonate rocks. To overcome this difficulty, we developed a workflow based on the centroid frequency shift method and Gabor transform which is optimized by using VSP data. The workflow was applied on 3D Ocean Bottom Cable seismic data. Distinct attenuation anomalies were observed in highly heterogeneous and saturated zones, such as the reservoirs and aquifers. Scattering shows significant contribution in attenuation anomalies, which is unusual in sandstones. This is due to the complex texture and heterogeneous nature of carbonate rocks. Furthermore, attenuation mechanisms such as frictional relative movement between fluids and solid grains, are most likely other important causes of attenuation anomalies. The slight lateral variation of attenuation reflects the lateral homogeneous stratigraphy of the oilfield. The results demonstrate the potential of seismic wave attenuation for delineating heterogeneous zones with high fluid content, which can substantially help for enhancing oil recovery.https://www.mdpi.com/1996-1073/15/2/534attenuationscatteringOBCVSPcarbonates |
| spellingShingle | Fateh Bouchaala Mohammed Y. Ali Jun Matsushima Youcef Bouzidi Mohammed S. Jouini Eric M. Takougang Aala A. Mohamed Estimation of Seismic Wave Attenuation from 3D Seismic Data: A Case Study of OBC Data Acquired in an Offshore Oilfield Energies attenuation scattering OBC VSP carbonates |
| title | Estimation of Seismic Wave Attenuation from 3D Seismic Data: A Case Study of OBC Data Acquired in an Offshore Oilfield |
| title_full | Estimation of Seismic Wave Attenuation from 3D Seismic Data: A Case Study of OBC Data Acquired in an Offshore Oilfield |
| title_fullStr | Estimation of Seismic Wave Attenuation from 3D Seismic Data: A Case Study of OBC Data Acquired in an Offshore Oilfield |
| title_full_unstemmed | Estimation of Seismic Wave Attenuation from 3D Seismic Data: A Case Study of OBC Data Acquired in an Offshore Oilfield |
| title_short | Estimation of Seismic Wave Attenuation from 3D Seismic Data: A Case Study of OBC Data Acquired in an Offshore Oilfield |
| title_sort | estimation of seismic wave attenuation from 3d seismic data a case study of obc data acquired in an offshore oilfield |
| topic | attenuation scattering OBC VSP carbonates |
| url | https://www.mdpi.com/1996-1073/15/2/534 |
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