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Can We Image Everything with Primaries?
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 77th EAGE Conference and Exhibition - Workshops, Jun 2015, Volume 2015, p.1 - 5
Abstract
Summary
For true amplitude imaging with reduced artifacts a closed-loop approach for seismic migration needs to be employed (‘least-squares migration’). However, today’s least-squares migration algorithms do not take into account multiple reflections and transmission effects. The use of multiples will enlarge the illumination of the subsurface and can be of crucial importance when primaries are not properly measured due to acquisition constraints and background noise. In this paper it is shown that the full wavefield migration (FWM) process can image subsurface structures via internal multiples. This is successfully demonstrated for imaging near-surface structures for land data when their primaries are not properly measured.
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