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Fast Butterfly-based Sparse Hyperbolic Radon Transform - Application to Multiple Attenuation and Stacking
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 77th EAGE Conference and Exhibition 2015, Jun 2015, Volume 2015, p.1 - 5
Abstract
Multiple reflections are a main problem in obtaining an accurate image of the subsurface in order to identifying hydrocarbon reservoirs. One of the commonly used methods for suppressing multiples is Radon transform and the hyperbolic Radon transform is a better approximation. However, the time-variant kernel of the hyperbolic Radon transform and the need for a high resolution Radon panel for a better separation of multiples from primaries makes it a difficult task. In this paper, this goal is achieved by performing an iterative shrinkage/thresholding algorithm with the recently introduced fast butterfly-based hyperbolic Radon transform. Also, a new method of NMO correction is introduced based on the proposed algorithm which prevents the distortions caused by NMO stretching. The numerical results show the efficiency of the performance of this fast sparse hyperbolic Radon transform in multiple attenuation and CMP stacking.