多维地震瞬时信息的直接计算方法  

Direct computation of multidimensional seismic instantaneous informations

作　　者：倪逸[1] 王倩[1] 张冲[1] 

机构地区：[1]石油地球物理勘探局研究院地质研究中心

出　　处：《石油地球物理勘探》1999年第4期381-389,共9页Oil Geophysical Prospecting

摘　　要：多维地震瞬时信息的分析是对一维复地震造分析的扩充，考虑了瞬时信息的空间变化，基于二维和三维的复地震道分析的概念，利用空间相邻道的平均直接提取信息，避免了较为复杂的二维和三维的Hilbert变换，所求信息更接近瞬时信息的特性。由于本文采用了差分方程计算瞬时信息的属性，与Hilbert变换方法相比，其计算效率有显著的提高，且计算结果相似，但本方法对数据的采样间隔有一定的要求。文中展示了用本方法提取的一些地震瞬时特征信息的实例。The analysis of multidimensional seismic instantaneous in formations is an extension to analysis of one-dimensional complex seismic trace. It considers the spacial variation of instantaneous in formations and is based on concepts of complex seismic trace analyses in 2-D and 3-D cases. It derives instantaneous informations from average values of spacial neighbouring traces, so that complicated 2-D and 3-D Hilbert transforms are avoided to thus obtain desirable in formations which are more similar to instantaneous ones- Because instantaneous information attributes are estimated by using difference equation, it causes higher computation efficiency than Hilbert transform method does, with similar results. This method has some requirements on data sampling interval. Some examples are given of the seismic instantaneous characteristic informations which are obtained by this method.

关 键 词：地震瞬时信息 地震道 地震特征参数 地震勘探 

分 类 号：P631.443[天文地球—地质矿产勘探]