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True-amplitude angle migration in complex media

: Ettrich, N.; Merten, D.; Foss, S.K.

European Association of Geoscientists and Engineers -EAGE-; Society of Petroleum Engineers -SPE-, Richardson/Tex.:
Society of Petroleum Engineers - 70th European Association of Geoscientists and Engineers Conference and Exhibition - Incorporating SPE EUROPEC 2008. Vol.3 : June 9 - 12, 2008, Rome
Red Hook, NY: Curran, 2008
ISBN: 978-1-605-60474-9
European Association of Geoscientists and Engineers (EAGE Conference and Exhibition) <70, 2008, Rome>
Conference Paper
Fraunhofer ITWM ()

We are presenting results from a true-amplitude prestack depth migration in the angle/azimuth domain. The implementation is based on the generalized Radon transform. Working directly in the angle/azimuth domain means that we do not need to calculate any Beylkin-determinant, and multi-valued traveltimes, in the presence of caustics, are naturally unfolded allowing for true-amplitude results even beneath a complex overburden. Such an implementation has until recently been considered unfeasible due to the computational complexity for large 3D volume migration. Our implementation is made possible through a massively parallel implementation with fast access to large dataset.