Abstract
This study presents a new approach for migration velocity analysis by ray-based reflection tomography, formulated according to more than a single dip direction. It is suggested to generate multiparameter CIGs through depth migration in the local angle domain, and to extract independent moveout information from several dip directions. By obeying the linear tomographic principle, a multidip tomography system is formulated to include migration errors from both specular and non-specular directions. We introduce an analytic mechanism for the traveltime error calculation along non-specular rays. The proposed analysis of migration errors by a multiple dipangle orientation, via the multidip tomography formulation, enables better reconstruction of the updated velocity model, and improves the conditioning of the tomographic inversion.
| Original language | English |
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| Title of host publication | Society of Exploration Geophysicists International Exposition and 84th Annual Meeting (SEG Denver 2014) |
| Subtitle of host publication | Denver, Colorado, USA 26-31 October 2014 |
| Publisher | Society of Exploration Geophysicists |
| Pages | 4783-4787 |
| Number of pages | 5 |
| Volume | 5 |
| ISBN (Print) | 9781634394857 |
| DOIs | |
| State | Published - 2014 |
| Event | SEG 2014 : Society of Exploration Geophysicists International Exposition and Annual Meeting - Denver, CO, United States Duration: 26 Oct 2011 → 31 Oct 2011 Conference number: 84 |
Publication series
| Name | SEG Technical Program Expanded Abstracts |
|---|---|
| Publisher | Society of Exploration Geophysicists |
| ISSN (Print) | 1052-3812 |
| ISSN (Electronic) | 1949-4645 |
Conference
| Conference | SEG 2014 : Society of Exploration Geophysicists International Exposition and Annual Meeting |
|---|---|
| Abbreviated title | SEG 2014 |
| Country/Territory | United States |
| City | Denver, CO |
| Period | 26/10/11 → 31/10/11 |