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Surface wave pressing method and device

A surface wave and detection line technology, which is applied in the field of surface wave suppression methods and devices, can solve the problems of poor accuracy rate and poor surface wave attenuation effect, and achieve the effect of reducing the influence of aliasing and improving the spatial sampling rate

Active Publication Date: 2020-10-13
PETROCHINA CO LTD
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Problems solved by technology

[0005] The purpose of the embodiments of this specification is to provide a surface wave suppression method and device to solve the problems of poor accuracy and poor surface wave attenuation effect in the prior art when suppressing surface waves

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  • Surface wave pressing method and device

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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present specification in combination with the drawings in the embodiments of the present specification. Obviously, the described embodiments are only some of the embodiments of the present specification, not all of them. Based on the embodiments in this specification, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of this specification.

[0031] In order to suppress the surface waves in the seismic data and remove the interference caused by the surface waves to the observed seismic data, the embodiment of this specification proposes a surface wave suppression method and device. The following is attached figure 1 An embodiment of a surface wave suppression method of the present application is described. The execution body of the method is a server. The specific steps of the method are ...

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Abstract

The embodiment of the invention provides a surface wave pressing method and device. The method comprises the following steps: grouping common shot gathers in acquired seismic data to obtain super shotgathers; determining surface wave characteristic information in the super shot set; according to the surface wave characteristic information, determining surface wave frequency domain energy in a super shot set transformed to a frequency domain; converting the surface wave frequency domain energy into surface wave time domain energy; determining a surface wave in the surface wave time domain energy by utilizing the surface wave characteristic information; and removing surface waves from the super shot set. By utilizing the embodiment of the invention, suppression of surface waves in seismic waves can be realized, and the signal-to-noise ratio of seismic data is improved.

Description

technical field [0001] The embodiments of this specification relate to the technical field of geological exploration, and in particular to a surface wave suppression method and device. Background technique [0002] One of the main contents of seismology is the study of information brought by seismic waves. And there are many interference signals overlapping with effective signals in the seismic wave. One type of wave that propagates along a free surface or an interface between rock formations and whose energy is largely confined within a thin surface layer is called a surface wave. Surface wave is a main kind of coherent noise, which has the characteristics of low frequency, strong energy and wide influence range. It is generated near the surface and is composed of the vertical component of Rayleigh waves. Seismic waves propagate underground. Due to the absorption and attenuation of seismic body waves by the formation, the high-frequency components of seismic signals atte...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/36
CPCG01V1/36G01V2210/32
Inventor 胡新海高丽燕魏国齐曾庆才沈伟军
Owner PETROCHINA CO LTD
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