混合相位子波有色反褶积
网络出版日期: 2013-06-01
基金资助
大型油气田及煤层气开发国家重大科技专项“基于GeoEast 的多波地震、测井和地质信息的裂缝储层综合分析软件集成”子课题(编号:2011ZX05019-008-005)资助。
Colored deconvolution of mixed phase wavelet
Online published: 2013-06-01
李 靖 , 周世新 , 巩书华 , 郑朝阳 , 付德亮 . 混合相位子波有色反褶积[J]. 岩性油气藏, 2013 , 25(3) : 82 -86 . DOI: 10.3969/j.issn.1673-8926.2013.03.014
The conventional seismic data process methods for high resolution assume that reflection coefficient series are accordant with Gaussian Gauss White Noise. Through the statistical analysis of reflection coefficients obtained from the actual logging data, it is concluded that the reflection coefficients are non-Gaussian distribution and their spectrums tend to blue, which can be applied to extract mixed phase wavelet and carry out deconvolution. Based on systematic analysis of the method of high order cumulant mixed phase wavelet extraction, and in order to avoid the influence of phase winding and accumulated error on phase estimation accuracy, the method of multi path average bispectrum was proposed. The actual seismic data processing result shows that this method can improve the resolution of seismic records
effectively and enhance its ability of detecting thin layer.
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