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| | Abstract | | Although the measurements of seismic attenuation have great potential to enhance our knowledge of physical conditions and rock properties, its application is limited because the robust methods for obtaining reliable attenuation estimates have not necessarily been established. We propose an attenuation estimation method by the application of seismic interferometry to Vertical seismic profile (VSP) data to convert from VSP configuration to sonic logging measurement configuration and then apply the robust attenuation estimation method developed for sonic waveform data to the converted VSP data. By applying the proposed methods based on cross-correlation interferometry and deconvolution interferometry to synthetic and field VSP data and comparing the stability of the proposed method with that of the conventional spectral ratio method, we clarify the advantages and disadvantages of the proposed methods. |
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