CEEMD高分辨率时频分析方法研究与应用  

Study and application of CEEMD high resolution time-frequency analysis method

作　　者：鄢高韩[1] 杨午阳[1] 杨庆[1] 魏新建[1] 王恩利[1] 王洪求[1] 王万里[1] 

机构地区：[1]中国石油勘探开发研究院西北分院,兰州730020

出　　处：《地球物理学进展》2016年第4期1709-1715,共7页Progress in Geophysics

摘　　要：希尔伯特黄变换(HHT)利用经验模态分解将地震信号分解为一系列平稳信号,并通过地震复数道构建瞬时振幅、瞬时相位、瞬时频率,从而更具有物理意义.CEEMD方法是一种新的EMD分解方法,解决了常规EMD方法中的"模态混叠"现象,基于CEEMD的时频分析方法能够为储层提供更加精细的刻画能力.模型数据和实际数据的处理结果表明,基于CEEMD的HHT方法,在时频谱方面比常规时频分析方法具有更高的分辨率,对储层的描述能力更为精确.Hilbert-Huang transform（ HHT） decomposes the seismic signal into a series of stationary signal using empirical mode decomposition（ EMD）, and constructs the instantaneous amplitude,instantaneous phase,instantaneous frequency through seismic complex trace,as a result that the time-frequency attributes becomes more physical meaning. The CEEMD method is a new EMD decomposition method, which solves the ＂ mode mixing ＂ phenomenon in the conventional EMD method, and the time frequency analysis method based on CEEMD can provide a more precise characterization of the reservoir. The processing results of model data and real data show that the HHT based on CEEMD method has higher resolution than the conventional time frequency analysis method in the time frequency spectrum, and is more accurate for the description of the reservoir.

关 键 词：时频分析 高分辨率 完备集合经验模态分解 希尔伯特黄变换 油气检测 

分 类 号：P631[天文地球—地质矿产勘探]