Well-constrained pre-stack elastic parameter inversing method for modulating supplemented subspace
A technology of elastic parameters and well constraints, which is applied in the fields of seismology and seismic signal processing for well logging records, can solve the problems of not being too small in the frequency band, easy to generate distortion in splicing, strong high-frequency noise, etc., and shorten the calculation time , avoid over-reliance, improve the effect of resolution
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[0032] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.
[0033] Key technology of the present invention is described as follows:
[0034] 1) Automatic gain high-frequency subspace compensation: Spectrum continuation is to fill the unknown spectrum with the known spectrum. This method can restore the high frequency. The frequency shift in the frequency domain is equivalent to the convolution operation in the frequency domain, that is, the space domain the multiplication operation. Modulation can introduce the mechanism of up-frequency, and at the same time, it is found that controlling the phase of the maximum and minimum feature points of the seismic curve can retain the characteristics of the original curve, thus discovering a high-frequency reconstruction method using automatic amplitude gain of seismic dat...
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