Surface consistence amplitude compensation method and device in common attitude gather

Abstract

The invention provides a surface consistence amplitude compensation method and a device in common attitude gather. The method comprises the following steps: acquiring seismic data and corresponding construction class report in the prospect; calculating the average total energy of all components of each channel of the seismic data to serve as seismic channel energy of the channel; performing surface consistence preliminary test on the acquired energy of each seismic channel, and determining the seismic channel energy according with the first preset condition as a representative data body; calculating each compensating factor which corresponds to the seismic channel energy in the representative data body, and calculating the compensating factor of the detector in the common attitude gather; performing surface consistence amplitude compensation on the seismic data in the whole prospect according to the total compensating factor consisting of the previous two factors; and calculating the three-component seismic data together, wherein the energy distribution trigonometric function relationship among the three-component data is guaranteed, the set attitude of the detector is considered, and the compensating factor of the detector is calculated in the common attitude gather. Therefore, the calculation result is accurate.

Description

technical field [0001] The invention relates to the field of seismic exploration, in particular to a method and device for compensating the surface consistent amplitude of a CCP attitude gather in seismic exploration. Background technique [0002] Seismic exploration technology is one of the important exploration methods and technologies in the fields of energy exploration engineering, geological engineering, and engineering geophysical prospecting. In the processing and interpretation results of seismic exploration, various seismic attributes can be used to detect geological anomalies, among which the amplitude attribute and its subsidiary products play an extremely important role. In the field data acquisition process of seismic exploration, due to the application of multiple coverage technology, the seismic data on the same bin will come from different excitation sources and different geophones. Therefore, due to the difference in the characteristics of the excitation so...

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Problems solved by technology

[0005] The inventor found in the research that the above two factors have a serious impact on the fidelity of the seismic data processing results, and there is currently a lack of a method that can better compensate the surface consistent amplitude

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