Dynamic correction value recursion correction non-stretching distortion dynamic correction method and device
A correction method and dynamic correction technology, applied in the field of exploration geophysics, can solve the problems of large amount of calculation, large amount of correction, cross-layer, etc., and achieve the effect of small correction range, avoid cross-layer, and accurate dynamic correction amount
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[0055] Step 101: Acquire pre-stack seismic data, wherein the pre-stack seismic data is figure 2 The CMP (Common Midpoint) gather form of the modeling data is displayed.
[0056] Step 102: Perform conventional motion correction on the pre-stack seismic data to obtain conventional motion correction results (that is, the first pre-stack seismic correction data, such as image 3 shown), from the first pre-stack seismic correction data, the near-offset traces whose stretching distortion is less than the preset ratio are selected for stacking to obtain the model trace data (such as Figure 4 shown);
[0057] Step 103: Calculate the basic dynamic correction value and the correction range of the current seismic trace according to the dynamic correction value of the previous offset;
[0058] Step 104: Using the method of cross-correlation, according to the correlation between the model trace and the data to be corrected, select the appropriate correction value of the correction valu...
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