Multi-wavelet NMO correction

doi:10.7523/j.issn.2095-6134.2018.05.015

Abstract

Abstract: The conventional normal moveout (NMO) correction that processes the seismic data sample-by-sample results in the well-known decrease in frequency content and amplitude distortion through stretch, which lowers the seismic resolution. This work proposes multi-wavelet NMO correction to reduce NMO-stretch effects. Multi-wavelet NMO corrects the data wavelet-by-wavelet rather than sample-by-sample. With the multi-wavelet decomposition technique, a seismic trace is decomposed into a series or a set of wavelets. Multi-wavelet NMO correction is implemented on a wavelet-by-wavelet basis. The moveout is applied to these wavelets to avoid stretch and maintain the seismic resolution. We test the algorithm on two synthetic models and a 2D real seismic section, and compare our results with those obtained using conventional NMO.

Key words: NMO correction, multi-wavelet decomposition, multi-wavelet NMO correction

CLC Number:

P631.4

LIN Luchun, XIE Mengyu, SHI Baoping, AN Ping. Multi-wavelet NMO correction[J]. , 2018, 35(5): 681-688.

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