High Precision Seismic Time-Frequency Spectrum Decomposition Method and Its Application
详细信息
- 责任者：Huang Handong (State Key Lab. of Petroleum Resource and Prospecting ; China University of Petroleum ; Beijing 102249 ; China) ; Guo Fei
- 刊名：Oil Geophysical Prospecting
- 出版年：2012
- 卷期：47(5)
- 关键词：频谱分析 ; spectral analysis ; 地震属性 ; seismic attributes
- 页码：p.773-780
- 图表：3 illus., 1 table, 14 refs.
- 分类号：1600
- issnNo：ISSN1000-7210
- isbnNo：CN13-1095/TE
摘要
This paper firstly discusses the algorithm theory of matching pursuit to seismic signal,and then put forward the reasonable improvement to standard Morlet wavelet,which can perfect the time-frequency atomic database,thus enhancing the precision of seismic signal matching decomposition.Based on the time-bandwidth of Morlet wavelet,the paper finally uses window treatment technology to dynamically scan matching wavelet atoms at the same time in multi-windows,so that calculation efficiency can be appropriately increasing.The model test and actual data analysis show that matching pursuit of seismic signal based on improved Morlet wavelet is more precise and efficient,and has some antinoise ability,suitable for quantitative analysis of the spectrum variation of seismic data,which will be helpful to study oil & gas reservoir distribution.
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