Amplitude spectrum compensation and phase spectrum correction of seismic data based on the generalized S transform

We propose a method for the compensation and phase correction of the amplitude spectrum based on the generalized S transform. The compensation of the amplitude spectrum within a reliable frequency range of the seismic record is performed in the S domain to restore the amplitude spectrum of reflectio...

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Bibliographic Details
Published in:Applied geophysics 2014-12, Vol.11 (4), p.468-478
Main Authors: Zhou, Huai-Lai, Wang, Jun, Wang, Ming-Chun, Shen, Ming-Cheng, Zhang, Xin-Kun, Liang, Ping
Format: Article
Language:English
Subjects:
Amplitudes
Compensation
Earth and Environmental Science
Earth Sciences
Frequency ranges
Geophysics
Geophysics/Geodesy
Geotechnical Engineering & Applied Earth Sciences
Mathematical models
Phase transformations
Reflection
Seismology
Spectrum analysis
Transforms
Wavelet
Wavelet transforms
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Summary:We propose a method for the compensation and phase correction of the amplitude spectrum based on the generalized S transform. The compensation of the amplitude spectrum within a reliable frequency range of the seismic record is performed in the S domain to restore the amplitude spectrum of reflection. We use spectral simulation methods to fit the time-dependent amplitude spectrum and compensate for the amplitude attenuation owing to absorption. We use phase scanning to select the time-, space-, and frequencydependent phases correction based on the parsimony criterion and eliminate the residual phase effect of the wavelet in the S domain. The method does not directly calculate the Q value; thus, it can be applied to the case of variable Q . The comparison of the theory model and field data verify that the proposed method can recover the amplitude spectrum of the strata reflectivity, while eliminating the effect of the residual phase of the wavelet. Thus, the wavelet approaches the zero-phase wavelet and, the seismic resolution is improved.
ISSN:1672-7975
1993-0658
DOI:10.1007/s11770-014-0456-y