一种新的地层弹性参数直接反演方法
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摘要
地震资料反演的目的是估计地层的物理参数 (密度、弹性和粘弹性参数 )的实际值 .本文中将最佳估计值定义为一种参数集 ,由该参数集可以算出与地震实际资料最佳拟合的合成地震记录 .本文提出一种新的地层弹性参数反演方法 ,主要适用于各向异性介质 (横向各向同性介质 )中地层弹性参数的反演 .本方法不同于过去传统的反演方法 ,它是一种完全意义上的全波波动方程反演 ,利用地震勘探中的多波多分量记录 (PP反射波记录和 PSV转换波记录 )联合进行地层弹性参数 C11和 C33反演 ,用以判断地层的属性
WT5BZ]The aim of seismic data inversion is to assess the physical parameters (including density, elastic parameters and viscous elastic parameters). Defining the best assessing value to be a kind of parameters set, it is simulated that the synthesized seismic records are the most fit to those which were recorded in fields. A new way of directly elastic parameters inversion has be brought forward in the context. It is suitable to the inversion of elastic parameters in anisotropic media (HTI). It is totally different from those depicted in above content. In order to classify the strata properties, it utilizes both PP wave and PSV wave to inverse the strata elastic parameters ( C 11 and C 33 ). It could be called as the inversion of elastic wave equation.
WT5BZ]The aim of seismic data inversion is to assess the physical parameters (including density, elastic parameters and viscous elastic parameters). Defining the best assessing value to be a kind of parameters set, it is simulated that the synthesized seismic records are the most fit to those which were recorded in fields. A new way of directly elastic parameters inversion has be brought forward in the context. It is suitable to the inversion of elastic parameters in anisotropic media (HTI). It is totally different from those depicted in above content. In order to classify the strata properties, it utilizes both PP wave and PSV wave to inverse the strata elastic parameters ( C 11 and C 33 ). It could be called as the inversion of elastic wave equation.
引文
张秉铭 .1 999.各向异性介质中多波多分量地震资料的正演模拟以及介质弹性参数直接反演方法的研究 [D].[学位论文 ]:中国石油大学 (北京 ) ,73～ 1 1 0
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Pan G S.1 988.Full waveform inversion of plane-wave seismograms in stratified acoustic media:Theory and feasibility[J].Geophysics,53:2 1～ 31
Gauthier O.1 986.Two-dimensional nonlinear inversion of seismic waveforms:numericalresults[J].Geophysics,51 :1 387～ 1 4 0 3
Ikelle L T.1 986.Linearized inversion of multioffsetseismic reflection in theω-k domain[J].Geophysics,51 :1 2 66～ 1 2 76
Kolb F,Canadas T.1 986.Linearized simultaneous inversion for source wavelet equalization and mis-tied adjustment[A].SEG58Aunnal Mecting.Dauas.1 2 3～ 1 2 4
Mc Aulay A D.1 986.Plane-layer prestack inversion in the presence of surface reverberation[J].Geophysics,51 :1 789～1 80 3
Mora P.1 987.Nonlinear two-dimensional elastic inversion of multioffset seismic data[J].Geophysics,52 ,1 2 1 1～ 1 2 2 8
Pan G S.1 988.Full waveform inversion of plane-wave seismograms in stratified acoustic media:Theory and feasibility[J].Geophysics,53:2 1～ 31
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