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Prestack Seismic Data Reconstruction Method Based Undecimated Discrete Wavelet Transform
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 77th EAGE Conference and Exhibition 2015, Jun 2015, Volume 2015, p.1 - 5
Abstract
Due to the limition of the acquisition conditions, the missing of traces in prestack seismic data is serious. We presented a new interpolation method to recover the missing traces. The undecimated discrete wavelet transform (UDWT) developed in recent years can capture the singularity in seismic data effectively and provide rich information in time domain and precise localized information in frequency domain. It represents the main features of the signal using a few larger coefficients. With such good capability of sparse representation, it can represent seismic data more sparsely than the Fourier transform method.
According to compressed sensing theory, even if the Nyquist sampling theory is not satisfied, the missing seismic data may also be recoveried just using very small amount of observated data. In this paper, a seismic data interpolation method based on undecimated wavelet transform was developed to reconstruct the missing seismic traces, so as to improve the integrity of the pre-stack seismic data. Results of theoretical model and the real data processing verified the validity and reliable of the method.