基于非常快速模拟退火算法的地震谱反演方法  

Spectral Inversion Based on Very Fast Simulated Annealing Algorithm

作　　者：张广智 李宁[1] 李超 陈怀震 陈雷 

机构地区：[1]中国石油大学地球科学与技术学院,山东青岛266555

出　　处：《西北地震学报》2012年第4期313-318,323,共7页Northwestern Seismological Journal

基　　金：国家油气重大专项(2011ZX05014-001-010HZ);中国石油科技创新基金(2011D-5006-0301);中央高校基本科研业务费专项资金(11CX05006A)

摘　　要：地震勘探中地层薄层特征的描述对提高地震分辨率十分重要。谱反演是建立在谱分解、时频分析基础上的一种反演方法。本文在已知子波的情况下,采用全局搜索的非常快速模拟退火算法(VFSA)对高信噪比的叠后地震资料进行谱反演。有效的识别了调谐厚度以下的薄层,得到近似反射系数的剖面,同时拓展了原始资料的频带宽度,提高了资料的分辨率,为解释资料的局部细微特征起到重要作用。The description of thin bed in seismic prospecting is very important for obtaining high frequency.Spectral inversion is a method based on the spectral resolution and time-frequency analysis,which can effectively determine the layer thickness below the seismic tuning thickness.In this paper,a global search method——Very Fast Simulated Annealing（VFSA） is used to spectral inversion in high SNR post-stack seismic data.As the presence of noise,in experiment,band spectrum is used in spectral inversion.The result is Quiasi-reflection coefficient.The method expands the bandwidth of the original data,and enhances the data resolution.It is an important role to explain the subtle characteristics in seismic prospecting.

关 键 词：地震分辨率 拓频 快速模拟退火 谱反演 薄层识别 

分 类 号：P631.4[天文地球—地质矿产勘探]