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Seismic data noise-reduction method based on multi-resolution singular value decomposition

A singular value decomposition and seismic data technology, applied in the field of oil and gas geophysical exploration, can solve problems such as unclean noise removal, loss of effective signals, and inability to identify signal noise components, etc., to achieve fast calculation speed and avoid interference

Inactive Publication Date: 2019-04-16
BEIJING UNIV OF CHEM TECH
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Problems solved by technology

[0002] In seismic signal acquisition work, due to human factors and environmental factors, seismic signals often contain a lot of noise. The seismic data denoising methods commonly used in the industry all have problems such as unclean noise removal and effective signal loss to a certain extent. , in the final analysis because these algorithms are not adaptive algorithms, that is, the algorithms themselves cannot identify the noise components in the signal

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  • Seismic data noise-reduction method based on multi-resolution singular value decomposition
  • Seismic data noise-reduction method based on multi-resolution singular value decomposition
  • Seismic data noise-reduction method based on multi-resolution singular value decomposition

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Embodiment Construction

[0020] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the accompanying drawings, which cannot be used to limit the protection scope of the present invention. It should be noted that, in the case of no conflict, the embodiments in the present application and various manners in the embodiments can be combined with each other. The drawings in the following description are only some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to these drawings without creative work.

[0021] A seismic data denoising method based on multi-resolution singular value decomposition, the method comprising,

[0022] S1 upgrades each seismic data into a two-dimensional Hankel matrix, denoted as H j ;

[0023] S2 performs singular value decomposition on the Hankel matrix, uses the first singular value to reconstruct the matrix into one-dimensiona...

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Abstract

The invention discloses a seismic data noise-reduction method based on multi-resolution singular value decomposition, and belongs to the field of the oil gas geophysical exploration. The multi-resolution singular value decomposition processing is performed on a signal by using the different characteristics of a seismic signal and a random signal, thereby reducing the noise in the seismic signal. Through the method provided by the invention, the seismic data is processed through the multi-resolution singular value decomposition, and the seismic data noise suppression is realized. The seismic data is processed through the multi-resolution singular value decomposition, and the seismic data noise suppression effect is realized; the method has self-adaptivity, and can avoid the importing of excessive artificial factors; the operation speed is fast and a requirement on the data processing speed on the industry can be satisfied; and the processed signal can satisfy the processing and explanation work of the deep seismic data.

Description

technical field [0001] The invention belongs to the field of oil and gas geophysical exploration, and in particular relates to a seismic data noise reduction method based on multi-resolution singular value decomposition. Background technique [0002] In seismic signal acquisition work, due to human factors and environmental factors, seismic signals often contain a lot of noise. The seismic data denoising methods commonly used in the industry all have problems such as unclean noise removal and effective signal loss to a certain extent. , in the final analysis because these algorithms are not adaptive algorithms, that is, the algorithm itself cannot identify the noise components in the signal. Therefore, it is necessary to develop an adaptive algorithm to denoise the seismic signal and reduce the impact of noise on subsequent processing and interpretation. Contents of the invention [0003] The purpose of the present invention is to propose a multi-resolution singular value...

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Application Information

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IPC IPC(8): G01V1/36
CPCG01V1/364G01V2210/32
Inventor 唐刚徐智
Owner BEIJING UNIV OF CHEM TECH
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