Processing method and device for trace gather record and storage medium

Abstract

The embodiment of the invention provides a processing method and device for a trace gather record and a storage medium. The method includes the steps of according to a seismic wave velocity value, conducting dynamic correction on the trace gather record; calculating average amplitude, a similarity coefficient and an amplitude variance of a seismic trace record in the trace gather record after dynamic correction; according to the average amplitude, the similarity coefficient and the amplitude variance, working out a speed evaluation value, wherein the speed evaluation value is used for evaluating whether or not the seismic wave velocity value is a target dynamic correction speed of the trace gather record; changing the seismic wave velocity value to obtain the maximum speed evaluation value, wherein the seismic wave velocity value corresponding to the maximum speed evaluation value is the target dynamic correction speed of the trace gather record; according to the target dynamic correction speed, processing the trace gather record. By working out the dynamic correction speed, the imaging quality of a high-speed sensitive stratum is improved, and meanwhile the calculation efficiencyis also improved.

Description

technical field [0001] This specification relates to the field of geophysical exploration, in particular to a method, device and storage medium for processing gather records. Background technique [0002] Seismic velocity wave is a very important parameter in conventional seismic data processing. At present, velocity analysis is usually used to obtain formation velocity. [0003] In the conventional velocity analysis method, a series of velocity at the same interval is given to scan, and the superimposed energy or similarity coefficient is used as the criterion of velocity analysis to make the velocity spectrum, and the amplitude energy or similarity coefficient of the data in the time window is calculated, considering the time The overall characteristics of the data in the window ignore the individual differences of each seismic trace record, resulting in the energy cluster of the velocity spectrum usually diverging to a certain extent near the correct dynamic correction ve...

AI Technical Summary

Problems solved by technology

However, for some formations sensitive to seismic wave velocity, the deviation of velocity will lead to poor imaging effect

You can repeatedly use the speed analysis method to adjust the speed, which can make the speed closer to the dynamic correction speed to a certain extent, but it is time-consuming and labor-intensive, and the effect may deteriorate, which will affect the processing results of the gather records

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