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Omnidirectional Extension of Full Wavefield Migration
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 76th EAGE Conference and Exhibition 2014, Jun 2014, Volume 2014, p.1 - 5
Abstract
Full wavefield migration (FWM) is an iterative inversion-based imaging technique that aims at explaining the complete measured data by the modeled data. The predicted data is computed using the modeling scheme in which all the scattering, including the transmission effects and all kinds of multiples, is generated due to the estimated reflectivity from the previous iteration. However, since the one-way extrapolation is used, the current method is limited in the angles of propagation. In this paper we extend the FWM by applying the wavefield modeling and imaging in the orthogonal direction as well. We show two examples, where the propagation is improved. Furthermore, diving waves and multiples related to them can now be handled.