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Development and Analysis of a True Amplitude Imaging Condition for Reverse-time Migration in Anisotropic Media
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 78th EAGE Conference and Exhibition 2016, May 2016, Volume 2016, p.1 - 5
Abstract
Summary
Depth migration is used for seismic imaging but is known to produce images who suffer from some numerical artefacts. Duprat and Baina developed a reverse-time migration (RTM) algorithm for seismic imaging in the frame of stochastic inverse problem theory and high-frequency approximations for isotropic media in order to deal with these issues. The following work extends the algorithm to take care of the case of anisotropic media at each step of the process. 2D synthetic test-cases show that the use of the new true amplitude imaging condition give improvements for tranversely isotropic media in terms of amplitude variations on the reflectors, avoidance of low-frequency artefacts and localization accuracy.
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