Seismic data edge preserving smoothing method based on structural features

A technology of seismic data and structural characteristics, applied in seismology, seismic signal processing, geophysical measurement, etc., can solve the problems of unfavorable seismic data fidelity, ambiguity, and damage to the authenticity of seismic data.

Inactive Publication Date: 2017-11-21
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

However, the inventors found that traditional denoising methods (such as mean filtering, multi-channel coherent filtering, etc.) will blur discontinuous structural features such as faults, fracture zones, and...

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  • Seismic data edge preserving smoothing method based on structural features
  • Seismic data edge preserving smoothing method based on structural features
  • Seismic data edge preserving smoothing method based on structural features

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Embodiment Construction

[0023] The present invention provides an edge-preserving and de-noising method for seismic data based on structural features. The edge-preserving and de-noising method performs targeted sub-area de-noising processing according to the structural information of the seismic data and the similarity information of the pre-filtering process. While removing random noise, it effectively protects the boundary information of seismic data.

[0024] Embodiments of the present invention will be described in detail below in conjunction with the following drawings.

[0025] The present invention provides a method for edge preservation and denoising of seismic data based on structural features, such as figure 1 As shown, the edge-preserving and denoising method includes the following steps:

[0026] Step 1: Perform smoothing and filtering processing on the seismic data, and perform matrix decomposition on the results obtained from the smoothing and filtering processing to obtain the seismic ...

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Abstract

The present invention relates to the technical field of seismic data processing, and in particular to a seismic data edge preserving smoothing method based on structural features, which performs targeted sub-region de-noising treatment based on the structural information of seismic data and the similarity information of the pre-filtering process. In addition to the random noise removal, the method effectively protects the boundary information of seismic data. The edge preserving smoothing method includes steps of smoothing the seismic data, decomposing the matrix to obtain the structure tensor of the seismic data, and completing the structural feature analysis of the seismic data; using the conventional de-noising method to filter the seismic data and obtaining the local similarity coefficient; building a guide filtering equation; and performing multiple de-noising iterations and other steps.

Description

technical field [0001] The invention relates to the technical field of seismic data processing, in particular to a method for edge-preserving and noise-removing seismic data based on structural features. Background technique [0002] During the acquisition of seismic data, various random disturbances from the outside world will reduce the signal-to-noise ratio of seismic records. Random noise is a kind of interference wave with no apparent velocity and frequency, which will reduce the signal-to-noise ratio of seismic data and directly affect the quality of seismic data processing. In order to improve the signal-to-noise ratio of seismic data, random noise in seismic records needs to be removed. However, the inventors found that traditional denoising methods (such as mean filtering, multi-channel coherent filtering, etc.) will blur discontinuous structural features such as faults, fracture zones, and geological body boundaries, that is, while de-interference eliminates some ...

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Application Information

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IPC IPC(8): G01V1/36
CPCG01V1/364G01V2210/324
Inventor 王延光刘立彬汪浩唐杰慎国强王玉梅张达揭景荣李美梅王荣伟王振涛王希萍钮学民李海涛王桂斋邓金华龚剑高侠
Owner CHINA PETROLEUM & CHEM CORP
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