Abstract
Interferometric transformations are widely applied to transform seismic data from one acquisition geometry to another. We used a correlation-type interferometric transformation to redatum verticalseismic-profiling multiples into surface-seismic virtual primaries. Conventional redatuming, based on the cross-correlation of seismic traces, yields virtual surface-seismic records that suffer from correlation artefacts, wavelet distortion, and low-temporal resolution. These effects are mainly caused by the limited recording aperture, the band-limited nature of the source wavelet, and the coarse source-receiver sampling. Least-squares migration of the virtual surface-seismic gathers can partially enhance the seismic resolution and improve the quality of the final migrated sections. However, our results demonstrate that the leastsquares datuming step remarkably helps suppress the cross-correlation artefacts, enhance the seismic resolution of the seismic events, and correctly deconvolve the source wavelet. Therefore, the obtained migrated sections suggest that least-squares datuming can be an essential processing step to apply to VSP surface-related multiples prior to imaging subsurface structures.
Original language | English (US) |
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Title of host publication | 77th EAGE Conference and Exhibition 2015 |
Subtitle of host publication | Earth Science for Energy and Environment |
Publisher | European Association of Geoscientists and Engineers, EAGE |
Pages | 4497-4501 |
Number of pages | 5 |
ISBN (Electronic) | 9781510806627 |
DOIs | |
State | Published - Jan 1 2015 |
Event | 77th EAGE Conference and Exhibition 2015: Earth Science for Energy and Environment - Madrid, Spain Duration: Jun 1 2015 → Jun 4 2015 |
Conference
Conference | 77th EAGE Conference and Exhibition 2015: Earth Science for Energy and Environment |
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Country/Territory | Spain |
City | Madrid |
Period | 06/1/15 → 06/4/15 |
ASJC Scopus subject areas
- Geochemistry and Petrology
- Geophysics