Seismic wave absorption and attenuation compensation method
An absorption attenuation and compensation method technology, which is applied in the field of seismic exploration data processing, can solve the problems of inverse Q filtering being difficult to provide spatially variable parameters, spectral whitening being difficult to maintain relative amplitude, deconvolution being unable to perform point-by-point compensation, etc., and achieving record resolution. rate control, improving signal-to-noise ratio and resolution, and the effect of simple algorithm
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[0043] The present invention uses the generalized S transform in the seismic exploration data to transform the seismic data into the time-frequency domain to obtain the instantaneous frequency attribute; combined with the difference in the instantaneous frequency change caused by the absorption and attenuation of the seismic wave, the compensation is performed in the time-frequency domain, and The absorption attenuation compensation can be completed by performing the generalized S inverse transformation to the time domain.
[0044] Concrete implementation steps of the present invention are:
[0045] 1) Use manual excitation and record seismic waves by geophones to obtain original seismic data, input VSP original data, input sum and first arrival and level them according to first arrival;
[0046] 2) Select a data with larger amplitude, higher signal-to-noise ratio, and higher dominant frequency as a reference track, and perform generalized S-transform on it. On the time spect...
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