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Method for fusing seismic attributes on basis of fast independent component analysis

A technique for independent component analysis, seismic attributes, applied in seismic signal processing, etc.

Inactive Publication Date: 2013-01-16
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

Although the application of some of the above fusion methods is relatively mature, there are still some defects in the application of some methods, such as the mentioned weighted fusion

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  • Method for fusing seismic attributes on basis of fast independent component analysis
  • Method for fusing seismic attributes on basis of fast independent component analysis
  • Method for fusing seismic attributes on basis of fast independent component analysis

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Embodiment Construction

[0027]The basic principle used in the present invention is fast independent component analysis, which is a fast algorithm of independent component analysis (ICA). The independent component analysis technique originates from the blind signal separation problem, and it belongs to the linear transformation technique together with principal component analysis (PCA) and singular value decomposition. Since the latter two decompose the data according to the size of energy, they can only eliminate the second-order correlation between the data. In the principle and application of seismic attribute fusion, it is usually necessary to extract multiple sets of features, and the correlation between features is hidden in high-order statistical properties. The method using independent component analysis can effectively reduce the feature dimension and maintain the high-order mutual independence of features, which is more effective than the principal component analysis and singular value decom...

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Abstract

The invention relates to the technical field of independent component analysis (ICA) and the field of fusion of multiple seismic attributes, and provides a method for fusing multiple seismic attributes on the basis of fast independent component analysis (FICA). The scheme includes that each attribute participating in fusion is divided into attribute blocks with identical sizes, the quantities of the attribute blocks of the attributes are identical, a certain quantity of blocks are selected from the attribute blocks and are processed according to an FICA principle to obtain a separation matrix and a reciprocal hybrid matrix of the separation matrix, and all the blocks are mapped to an ICA domain by the separation matrix; the corresponding blocks of the attributes are fused in the ICA domain according to fusion rules, and finally a fusion result of the ICA domain is mapped to a spatial domain to obtain a fusion result; and the fusion result is beneficial to analyzing complicated stratum information and improving reservoir prediction precision. The method can be widely applied to seismic attribute analysis, comprehensive interpretation, seismic reservoir prediction and lithological character and fluid identification.

Description

technical field [0001] The invention relates to the field of independent component analysis technology and the field of seismic multi-attribute fusion, and is a method for seismic attribute fusion using fast independent component analysis (FICA) technology. The method can be widely used in seismic attribute analysis, comprehensive interpretation, and seismic reservoirs. Prediction, lithology and fluid identification. Background technique [0002] In recent years, seismic attribute technology has developed rapidly and has been widely used in various fields such as stratigraphic analysis, reservoir characterization and reservoir dynamic detection, and has become the core part of reservoir geophysics. Seismic attributes have also developed from early amplitude attributes to hundreds of commonly used ones. However, a single seismic attribute is often affected by observation conditions, measurement accuracy, geological complexity, subjective factors, and multi-solutions caused by...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/30
Inventor 彭真明普艳香赵敏谢成芳黄振星李全忠张萍
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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