Method, device and system for suppressing multiple waves

Abstract

Embodiments of the specification disclose a method, device and system for suppressing multiple waves. The method comprises the following steps: acquiring time horizons of a mark layer in a target processing layer segment; superimposing the time horizons on a superposition velocity spectrum, and picking a velocity corresponding to the marker layer on the superposition velocity spectrum; picking a superposition velocity on the superposition velocity spectrum based on the velocity corresponding to the marker layer to obtain a first optimized superposition velocity; and performing multi-wave suppression on the pre-superposition seismic trace set of the target processing layer segment based on the radon transform according to the first optimized superposition velocity to obtain seismic data after the multi-wave suppression. With the embodiments of the specification, the effect of multi-wave suppression can be improved.

Description

technical field [0001] The present invention relates to the technical field of seismic data processing, in particular to a method, device and system for suppressing multiple waves. Background technique [0002] Multiple waves can affect seismic data in many ways. For example, multiple waves will interfere with the effective wave reflection signal and reduce the signal-to-noise ratio of the data; when the multiple wave interference overlaps with the primary wave, the amplitude, frequency and phase of the effective reflection wave will be distorted, and the resolution will decrease, affecting the extraction of seismic attributes, Reliability of seismic interpretation studies such as inversion. [0003] Multiple wave suppression has always been a research difficulty in the field of seismic exploration, and a variety of methods for attenuating multiple waves have been proposed and formed. However, under normal circumstances, the difference between the interlayer multiple wave ...

AI Technical Summary

Problems solved by technology

However, under normal circumstances, the difference between the interlayer multiple wave velocity and the primary wave velocity is small, and they are mixed together. It is difficult to find a clear boundary in the velocity spectrum, and it is difficult to ensure the application effect of suppressing multiple waves.

If the selected speed is too small and the time difference is large, the ability to suppress multiple waves is weak, and there are many residual multiple waves, which cannot achieve a good multiple wave suppression effect.

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