利用相关系数法优选激发因素
|
摘要
在野外地震数据采集参数试验中,激发因素的选择主要通过分频扫描、能量、信噪比或频谱等单一因素的定性或定量分析来实现,但这种分析的结论往往因人而异。本文基于同一震点激发、同排列接收、不同炮激发子波相位相同的假设,利用相关原理,对试验点不同激发因素获得的地震数据进行相关分析,再依据相关系数和叠加相关系数的大小,判别、确定最佳激发因素。文章最后给出的应用实例验证了该方法的应用效果。
During parameter tests for seismic data acquisition in the field,source parameters determination are made mainly through qualitative & quantitative analyses to frequency scan,energy,signal to noise ratio or frequency spectrum.Analysis results are often different because of different analyzers.The paper discusses parameter optimizing on the following assumptions: with repeated shootings at the same position,receiving with the same spread and same wavelet phase of different shots,and adopting correlation theory,correlations of seismic data with different source parameters are analyzed.Then the optimum source parameters are determined by comparing the correlation coefficients and stack correlation coefficients.Finally application examples are given.
During parameter tests for seismic data acquisition in the field,source parameters determination are made mainly through qualitative & quantitative analyses to frequency scan,energy,signal to noise ratio or frequency spectrum.Analysis results are often different because of different analyzers.The paper discusses parameter optimizing on the following assumptions: with repeated shootings at the same position,receiving with the same spread and same wavelet phase of different shots,and adopting correlation theory,correlations of seismic data with different source parameters are analyzed.Then the optimum source parameters are determined by comparing the correlation coefficients and stack correlation coefficients.Finally application examples are given.
引文
[1]李庆忠.走向精确勘探的道路.北京:石油工业出版社,1993
[2]李庆忠.关于低信噪比地震资料的基本概念和质量改进方向.石油地球物理勘探,1986,21(4):343~364Li Qing-zhong.The concept of low S/N seismic dataand the measures for i mproving the data quality.OGP,1986,21(4):343~364
[3]段玉箫,夏雅琴等.地电异常矩形脉冲信号与火山喷发间的相关性分析.石油地球物理勘探,2004,39(增刊):57~61
[4]Oppenhei m A V,Schafer R Wand Buck J R.Discrete-ti me Signal Processing.Upper Saddle River,N JPrentice Hall,ISBN0137549202,1999
[5]Mallat S.A Wavelet Tour of Signal Processing.Second Edition,Academic Press,ISBN0-12-466606-X,1999
[6]Bracewell R N.The Fourier Transform and Its Ap-plications.2nd ed,McGraw-Hill,New York,1986
[7]吴喜之编著.统计学:从概念到数据分析.北京:高等教育出版社,2008
[8]陆基孟主编.地震勘探原理.山东东营:石油大学出版社,1993
[2]李庆忠.关于低信噪比地震资料的基本概念和质量改进方向.石油地球物理勘探,1986,21(4):343~364Li Qing-zhong.The concept of low S/N seismic dataand the measures for i mproving the data quality.OGP,1986,21(4):343~364
[3]段玉箫,夏雅琴等.地电异常矩形脉冲信号与火山喷发间的相关性分析.石油地球物理勘探,2004,39(增刊):57~61
[4]Oppenhei m A V,Schafer R Wand Buck J R.Discrete-ti me Signal Processing.Upper Saddle River,N JPrentice Hall,ISBN0137549202,1999
[5]Mallat S.A Wavelet Tour of Signal Processing.Second Edition,Academic Press,ISBN0-12-466606-X,1999
[6]Bracewell R N.The Fourier Transform and Its Ap-plications.2nd ed,McGraw-Hill,New York,1986
[7]吴喜之编著.统计学:从概念到数据分析.北京:高等教育出版社,2008
[8]陆基孟主编.地震勘探原理.山东东营:石油大学出版社,1993
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心