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Research and Application of the Nonlinear Seismic Attribute Correlation Dimension

Author: ZhaoDeQing
Tutor: WangXuBen；HuPing
School: Chengdu University of Technology
Course: Earth Exploration and Information Technology
Keywords: Nonlinear Seismic attributes Correlation dimension Chaos Fractal
CLC: P631.44
Type: Master's thesis
Year: 2010
Downloads: 92
Quote: 0
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Abstract


At present, the attribute parameter extraction from seismic seismic data processing is a major technical methods. Seismic trace is essentially a typical nonlinear time series, the technical methods for nonlinear seismic attribute parameter extraction will be on the rational use of seismic information more favorable. This article is based on the theory of nonlinear nonlinear correlation dimension seismic attributes studies. First, chaotic dynamics of nonlinear systems, fractal characteristics and nonlinear characteristics of the theory of seismic signals were analyzed. Indicates that the seismic signal is chaotic time series, with chaos and fractal characteristics. Second, the analysis of the seismic attributes, including the classification of property, attribute extraction, the use of non-linear theory of nonlinear seismic data Seismic attribute extraction. In fractal technology, article mainly studies the fractal dimension seismic correlation dimension of the strike principles and processes. Because seismic trace is a time series, the general time series mainly in the time domain or transform domain research, and in the chaotic time series processing, various invariants in phase space calculations are carried out, so the phase space reconstruction processing chaotic time series is a very important first step. So the article on the phase space reconstruction theory and on the phase space reconstruction method of calculating the parameters analyzed. Is the fractal dimension of solving the correlation dimension to provide a theoretical basis. In the actual seismic data processing to strike the correlation dimension on the one hand the characteristics of seismic data itself, this paper analyzes the calculation to determine the value of each parameter situation. Other hand, because a very large amount of seismic data, the use of traditional methods of calculation time for too long. Based on this issue, analyzed in the range of allowable error, using a combination of human as well as to improve the calculation of correlation integral in order to obtain seismic correlation dimension. We took in the algorithm windowed and non-windowed two calculations. The paper first using the method of theoretical models for different numerical experiments. Purpose is to analyze the non-linear correlation dimension seismic attributes in the response of different geological conditions. The results show that the correlation dimension parameters can clearly reflect the geological conditions. Secondly article analyzes the use of this improved algorithm for solving the actual seismic data correlation dimension of this seismic attributes. Strike the correlation dimension and the results can be well logging, geological data consistent. So that in seismic exploration, research on the correlation dimension seismic data processing and interpretation provides a better basis to judge.

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CLC: > Astronomy,Earth Sciences > Geology > Geology, mineral prospecting and exploration > Geophysical exploration > Seismic exploration >
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