谱模拟方法在高分辨率地震资料处理中的应用  

THE APPLICATION OF SPECTRAL MODELING METHOD TO HIGH RESOLUTION PROCESSING OF SEISMIC DATA

作　　者：尚新民[1] 刁瑞[1] 冯玉苹 赵翠霞[1] 

机构地区：[1]中国石化胜利油田分公司物探研究院,山东东营257000 [2]中石化石油工程地球物理公司胜利分公司,山东东营257086

出　　处：《物探与化探》2014年第1期75-80,共6页Geophysical and Geochemical Exploration

基　　金：国家高技术研究发展计划(863)项目(编号:2011AA060303)

摘　　要：为了克服地震子波的时变影响,避免复杂的时窗大小选取问题,使得谱模拟方法能更好地适应地震信号是平稳信号的假设条件,将改进S变换与谱模拟方法相结合,形成时频域谱模拟方法。在二维时频谱中进行谱模拟处理,该方法能够克服地震子波随地层深度变化的限制。理论模型及实际资料处理效果显示,时频域谱模拟方法能够有效提高地震分辨率,实现地震资料的高分辨处理。Seismic wavelet is changed in the wake of stratigraphic depth access.The improved S transform in combination with spectral modeling method can overcome time-varying seismic wavelet and avoid the complex window dimension problem.Spectral modeling in the time-frequency domain can well adapt itself to the assumption condition in that the seismic data are smooth and serve as steady signals. Spectral modeling is processed in time-frequency domain,which can overcome time-varying wavelet and improve seismic resolution.A comparison of the effects of the seismic data processing shows that the method can effectively broaden the frequency band and improve seismic resolution.

关 键 词：S变换 时频域 谱模拟 地震子波 地震分辨率 

分 类 号：P631.4[天文地球—地质矿产勘探]