Abstract
Recently, a novel method to redatum the wavefield in the sub-surface from a reflection response measured at the surface has gained interest for imaging primaries in the presence of strong internal multiples. A prerequisite for the algorithm is an accurate and correct estimate of the direct-wave Green's function. However, usually we use an estimate for the direct-wave Green's function computed in a background velocity medium. Here, we investigate the effect of amplitude and phase errors in that estimate. We formulate two novel imaging conditions based on double-focusing the measured reflection response inside the subsurface. These yield information on the amplitude error in the estimate for the direct-wave Green's function which we can then correct, but the phase error remains elusive.
Original language | English |
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Title of host publication | SEG Technical Program Expanded Abstracts 2016 |
Editors | Charles Sicking, John Ferguson |
Publisher | SEG |
Pages | 5155-5159 |
DOIs | |
Publication status | Published - 2016 |
Event | SEG International Exposition and 86th Annual Meeting - Dallas & Kay Bailey Hutchison Convention Center, Dallas, United States Duration: 16 Oct 2016 → 21 Oct 2016 Conference number: 86 http://seg.org/Events/Annual-Meeting |
Publication series
Name | SEG Technical Program Expanded Abstracts |
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Publisher | SEG |
Volume | 2016 |
ISSN (Electronic) | 1949-4645 |
Conference
Conference | SEG International Exposition and 86th Annual Meeting |
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Abbreviated title | SEG 2016 |
Country/Territory | United States |
City | Dallas |
Period | 16/10/16 → 21/10/16 |
Internet address |
Keywords
- inversion
- autofocusing
- imaging
- internal multiples
- velocity