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Volume 26 Issue 4
Aug 2015
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Xiaohui Yang, Siyuan Cao, Dian Yuan. True amplitude extraction technology and its application in pre-stack seismic data. Journal of Earth Science, 2015, 26(4): 522-529. doi: 10.1007/s12583-015-0567-2
Citation: Xiaohui Yang, Siyuan Cao, Dian Yuan. True amplitude extraction technology and its application in pre-stack seismic data. Journal of Earth Science, 2015, 26(4): 522-529. doi: 10.1007/s12583-015-0567-2

True amplitude extraction technology and its application in pre-stack seismic data

doi: 10.1007/s12583-015-0567-2
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  • Corresponding author: Siyuan Cao,
  • Received Date: 02 Sep 2014
  • Accepted Date: 30 Dec 2014
  • Publish Date: 12 Aug 2015
  • Common-reflection-point (CRP) gather is a bridge that connects seismic data and petrophysical parameters. Pre-stack attributes extraction and pre-stack inversion, both of them are important means of reservoir prediction. Quality of CRP gather usually has great impact on the accuracy of seismic exploration. Therefore, pre-stack CRP gathers noise suppression technology becomes a major research direction. Based on the vector decomposition principle, here we propose a method to suppress noise. This method estimates optimal unit vectors by searching in various directions and then suppresses noise through vector angle smoothing and restriction. Model tests indicate that the proposed method can separate effective signal from noise very well and suppress random noise effectively in single wavenumber case. Application of our method to real data shows that the method can recover effective signal with good amplitude preserved from pre-stack noisy seismic data even in the case of low signal to noise ratio (SNR).


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