基于非常快速模拟退火算法的地震谱反演方法

英文篇名：Spectral Inversion Based on Very Fast Simulated Annealing Algorithm
中文刊名：西北地震学报
英文刊名：Northwestern Seismological Journal
作者：张广智 ; 李宁 ; 李超 ; 陈怀震 ; 陈雷
英文作者：ZHANG Guang-zhi ; LI Ning ; LI Chao ; CHEN Huai-zheng ; CHEN Lei(School of Geosciences ; China University of Petroleum ; Shangdong Qingdao 266555 ; China)
中文关键词：地震分辨率 ; 拓频 ; 快速模拟退火 ; 谱反演 ; 薄层识别
英文关键词：Seismic resolution ; Expand bandwith ; Very Fast Simulated Annealing ; Spectral inversion ; Thin bed identification
出版日期：2012-12-30
机构：中国石油大学地球科学与技术学院;
年：2012
期：04
出版单位：西北地震学报

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.

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