Residual amplitude compensating method based on AVO
An amplitude compensation and amplitude technology, applied in the field of seismic signal processing, can solve problems such as inaccuracy, and achieve the effect of high fidelity and good data base
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[0057] Such as Figure 1 to Figure 4 Shown, the present invention is based on the residual amplitude compensation method of AVO feature, comprises the following steps:
[0058] (a) Pre-stack CRP gathers, calculation parameters;
[0059] (b1) The total number of peaks and troughs and the corresponding amplitude extremum of the (2j+1) channel signal in the statistical time window, that is, the absolute value of the trough area;
[0060] (b2) Sort the amplitude extrema;
[0061] (b3) Calculate the amplitude value representing the time window by using the linear fitting method or the median calculation method.
[0062] In the step of the present invention, the amplitude extremum sorting, such as figure 2 There are a total of n in the shaded part of the time window p extremum amplitude values, these values are sorted from small to large, generally in the form of image 3 The middle curve c distribution; generally smaller extreme values and larger extreme values are more ...
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