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

Zhou Huai-Lai; Wang Jun; Wang Ming-Chun; Shen Ming-Cheng; Zhang Xin-Kun; Liang Ping

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

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摘要

We propose a method for the compensation and phase correction of the ampli-tude 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 do-main 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 frequency-dependent 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.

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《应用地球物理（英文版）》 |2014年第4期|468-478|共11页
作者
Zhou Huai-Lai; Wang Jun; Wang Ming-Chun; Shen Ming-Cheng; Zhang Xin-Kun; Liang Ping;
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作者单位

State Key Laboratory of 0il and Gas Reservoir Geology and Exploitation, CDUT, Chengdu 610059, China.;

Institute of Sedimentary Geology, Chengdu University of Technology, Chengdu 610059, China.;

Exploration and Development Institute of Bohai 0il Field of CN00C Co., Ltd Tianjin Branch, Tianjing 300452, China.;

College of Geophysics, Chengdu University of Technology, Chengdu 610059, China.;

College of Geophysics, Chengdu University of Technology, Chengdu 610059, China.;

College of Energy Resource, Chengdu University of Technology, Chengdu 610059, China;

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正文语种 eng
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Amplitude spectrum compensation and phase spectrum correction of seismic data based on the generalized S transform

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