Pre-stack time migration in common source domain without velocity model
Most of the migration techniques require an input velocity model. Velocity analysis is one of the most critical stages in seismic data processing. Standard ways to find the velocity model are constant velocity stack and semblance velocity analysis, which can be time consuming and labour intensive. I...
| Main Authors: | , , |
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| Format: | Conference Paper |
| Published: |
2015
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| Online Access: | http://hdl.handle.net/20.500.11937/60283 |
| _version_ | 1848760594319015936 |
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| author | Khoshnavaz, M. Bona, Andrej Urosevic, Milovan |
| author_facet | Khoshnavaz, M. Bona, Andrej Urosevic, Milovan |
| author_sort | Khoshnavaz, M. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Most of the migration techniques require an input velocity model. Velocity analysis is one of the most critical stages in seismic data processing. Standard ways to find the velocity model are constant velocity stack and semblance velocity analysis, which can be time consuming and labour intensive. In this paper, we introduce another approach to obtain the migration velocity and pre-stack time migration algorithm that is time effective and does not require any input velocity model prior to imaging. The velocity in each point in a common source gather is derived by calculating the radius of the curvature of seismic reflected wave-front. The velocity is independent of of two way travel time and offset. It makes it also suitable for passive seismic imaging and earthquake seismology. The feasibility of the proposed technique is demonstrated on both synthetic and field seismic data examples. |
| first_indexed | 2025-11-14T10:18:15Z |
| format | Conference Paper |
| id | curtin-20.500.11937-60283 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T10:18:15Z |
| publishDate | 2015 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-602832018-08-08T02:44:05Z Pre-stack time migration in common source domain without velocity model Khoshnavaz, M. Bona, Andrej Urosevic, Milovan Most of the migration techniques require an input velocity model. Velocity analysis is one of the most critical stages in seismic data processing. Standard ways to find the velocity model are constant velocity stack and semblance velocity analysis, which can be time consuming and labour intensive. In this paper, we introduce another approach to obtain the migration velocity and pre-stack time migration algorithm that is time effective and does not require any input velocity model prior to imaging. The velocity in each point in a common source gather is derived by calculating the radius of the curvature of seismic reflected wave-front. The velocity is independent of of two way travel time and offset. It makes it also suitable for passive seismic imaging and earthquake seismology. The feasibility of the proposed technique is demonstrated on both synthetic and field seismic data examples. 2015 Conference Paper http://hdl.handle.net/20.500.11937/60283 10.3997/2214-4609.201412779 restricted |
| spellingShingle | Khoshnavaz, M. Bona, Andrej Urosevic, Milovan Pre-stack time migration in common source domain without velocity model |
| title | Pre-stack time migration in common source domain without velocity model |
| title_full | Pre-stack time migration in common source domain without velocity model |
| title_fullStr | Pre-stack time migration in common source domain without velocity model |
| title_full_unstemmed | Pre-stack time migration in common source domain without velocity model |
| title_short | Pre-stack time migration in common source domain without velocity model |
| title_sort | pre-stack time migration in common source domain without velocity model |
| url | http://hdl.handle.net/20.500.11937/60283 |