Seismic exploration multi-frequency data fusion method based on weight deconvolution

A technology for seismic data and seismic exploration, applied in the field of seismic exploration, can solve problems such as untargeted processing, and achieve the effect of avoiding the problem of excessive noise amplification
CN114002736AActive Publication Date: 2022-02-01CHINA UNIV OF MINING & TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA UNIV OF MINING & TECH
Publication Date
2022-02-01

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Abstract

The invention discloses a seismic exploration multi-frequency data fusion method based on weight deconvolution. The method comprises the following steps that: an objective function based on a plurality of single-frequency seismic data is constructed; a weight deconvolution filtering operator corresponding to the single-frequency seismic data is obtained based on the objective function by using the signal-to-noise ratio difference between different data, and the operator is applied to the corresponding single-frequency seismic data; and finally, superposition is performed to obtain a fusion result. According to the method, direct association between the objective function and the single-frequency seismic data is established, and weight filtering processing is performed by using the signal-to-noise ratio differences of the different data, so that the problem of possible excessive noise amplification in a subsequent deconvolution process caused by introduction of low-signal-to-noise-ratio data is avoided.
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Description

technical field

[0001] The invention belongs to the field of seismic exploration, in particular to a weighted deconvolution-based seismic exploration multi-frequency data fusion method. Background technique

[0002] The underground structure detection technology based on waveform reflection imaging is an important technology in the field of exploration. Common methods include reflection seismic (elastic wave) and ground penetrating radar (electromagnetic wave). Two-way travel time to the subsurface reflection interface and back to the geophone. The principle of reflection seismic method is simple. Seismic waves are generated by exciting the source on the ground, sea surface or seabed. During the downward propagation of seismic waves, part of the energy will be reflected back by sedimentary strata or rock mass boundaries, fracture surfaces, etc. The reflected energy can be Received by a geophone, and then through a series of processing methods, high-resolution imaging of the...

Claims

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