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弹性波阻抗
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  elastic impedance
     Application and analysis of elastic impedance in time-lapse seismolgy
     弹性波阻抗在时移地震中的应用分析
短句来源
     The basic theory of prestack elastic impedance inversion is briefly described in this paper and, using real data of the GD oilfield, the key steps of angle gather wavelet extraction, horizon calibration, S-wave velocity prediction, and elastic parameter extraction were analyzed and studied. The comprehensive interpretation of multiple elastic parameters determined from log analysis is a key to improving the effect of prestack seismic inversion.
     本文论述了叠前弹性波阻抗反演的基本原理,结合GD地区实际资料,对反演过程中涉及的角道集子波提取、层位标定、横波速度预测、弹性参数提取与解释等关键步骤进行了详细研究,指出基于测井资料分析的多种弹性参数综合解释是提高叠前地震反演应用效果的关键。
短句来源
     As a result of considering AVO effect,Elastic Impedance is more capable of detecting of fluid and lithology than acoustic Impedance. Apply the method of elastic impedance inversion to time-lapse seismic,use AVA constrained sparse spike inversion to process elastic impedance inversion,and use cross-plot technique to predict changes in dynamic reservoir properties,such as water saturation. Estimates of saturation allow integration of time-lapse seismic with elastic impedance inversion to improve reservoir fluid-flow prediction and enhance reservoir management decisions.
     本文将弹性波阻抗反演应用于时移地震中,采用AVA(Amplitude Variation with Angle)约束稀疏脉冲反演来进行弹性波阻抗反演,得到纵横波阻抗等弹性参数,通过交会图分析,将弹性参数转换为油藏参数,如预测含水饱和度的变化,通过本方法可增强对储层流体的预测,提高储层管理能力.
短句来源
  elastic wave impedance
     Prestack elastic wave impedance inversion technique and application.
     叠前弹性波阻抗反演技术及应用
短句来源
     Elastic wave impedance technique is a method combining ordinary acoustic wave impedance inversion with AVO inversion,which can use seismic angular stack data in far offset for inversion of wave impedance.
     弹性波阻抗 (EI)技术是一种结合了常规声波阻抗 (AI)反演和 AVO反演技术的方法 ,可以利用远炮检距地震角度叠加数据进行波阻抗的反演工作。
短句来源
     Based on study on azimuth and angular trace assemblage in pre-stack seismic data body, hydrocarbon reservoir anisotropy analysis and elastic wave impedance inversion analysis are carried out from pre-stack, providing a thoroughly new approach to identification of structural-lithologic complex hydrocarbon reservoir, especially to carbonate reservoir.
     基于叠前地震数据体中方位角和角道集的研究,从叠前开展油气储层各向异性分析和弹性波阻抗反演分析,为构造-岩性复合型油气藏储层尤其是碳酸盐岩储层的识别提供了一种全新的手段。
短句来源
     Taking the carbonate hydrocarbon reservoir in Feixianguan Formation in Xuanhan region in northeast Sichuan as an example, anisotropy analysis and elastic wave impedance inversion are carried out. Comprehensive evaluation study is also conducted to the reservoir.
     以川东北宣汉地区飞仙关组碳酸盐岩油气藏储层为实例,开展了各向异性分析和弹性波阻抗反演,并对储层进行了综合评价研究。
短句来源
     Elastic wave impedance inversion is a seismic inversion technique combining ordinary sonic impedance inversion with AVO inversion.
     弹性波阻抗反演是一种结合了常规声阻抗反演和叠前AVO反演的地震反演技术。
短句来源
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  “弹性波阻抗”译为未确定词的双语例句
     Comparison among three elastic wave impedances formulas.
     三种弹性波阻抗公式比较
短句来源
     Application of elastic impendence inversion in seismic monitoring of the heavy-oil thermal recovery
     弹性波阻抗反演在稠油热采地震监测中的应用
短句来源
     In comparison with other two elastic wave impedances,the Verwest EI can better guide lithology and predict fluid as lithologic marker.
     与其他两种弹性波阻抗相比,VerwestEI可以作为更好的岩性指示器指导岩性和流体预测。
短句来源
     In the paper,the method of elastic impendence inversion is introduced in detail and used in the inversion and explanation of seismic monitoring data. Results show it is feasible for elastic impendence inversion to be used in seismic monitoring of the heavy-oil thermal recovery.
     本文详细叙述了弹性波阻抗反演的方法,并将其应用于稠油热采地震资料的反演和解释中,结果表明弹性波阻抗反演用于稠油热采地震监测是切实可行的.
短句来源
     Two elastic parameters (bulk modulus(K) and EI(30)) are more sensitive to sandstone and claystone based on the sensitivity analysis of eight elastic parameters.
     通过研究区地层弹性参数对砂岩的敏感性分析试验,筛选出2个对砂岩反应较敏感的弹性参数(弹性波阻抗和体积模量)。
短句来源
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  elastic impedance
AVO gradient data is used for lithofacies interpretation, P- wave data is used for acoustic impedance inversion, S-wave data is used for elastic impedance, and Poisson's ratio data is used for detecting oil and gas.
      
Application of joint elastic impedance inversion in the GD Oilfield
      
For the complicated reservoir description of the GD oilfield, P-wave and S-wave elastic impedance inversion was carried out using pre-stack seismic data to accurately identify the lithology of the reservoir.
      
Lamé parameters inversion based on elastic impedance and its application
      
The Connolly (1999) elastic impedance (EI) equation is a function of P-wave velocity, S-wave velocity, density, and incidence angle.
      
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  elastic impedance (ei)
The Connolly (1999) elastic impedance (EI) equation is a function of P-wave velocity, S-wave velocity, density, and incidence angle.
      
Previous formulation for P-wave elastic impedance (EI) technology considers only first-order effects in isotropic reflectivity.
      


Based on the theory of wave propagation in porous, fluid-saturated media presented by the writer several years ago, the effects of dissipation and dispersion of seismic waves in water-saturated strata are studied in detail in this article. The results of numerical computations show that three main factors influencing the phenomenon are the permeability of the media, the porosity and the ratio of elastic wave impedance of the solid phase to that of the pore water, and that the frequency as well as the difference...

Based on the theory of wave propagation in porous, fluid-saturated media presented by the writer several years ago, the effects of dissipation and dispersion of seismic waves in water-saturated strata are studied in detail in this article. The results of numerical computations show that three main factors influencing the phenomenon are the permeability of the media, the porosity and the ratio of elastic wave impedance of the solid phase to that of the pore water, and that the frequency as well as the difference of compressibility between the solid grain and the solid skeleton do not have considerable effects. The effect of air or gas content in groundwater on the wave propagation is roughly estimated. Therefrom, it is pointed out that under some crustal and hydrogeological conditions there must be some error in the phase analysis in geophysics, in the explanation of data of seismic measurement in engineering seismology and in the treatment of dynamic problems of earth materials in geo-mechanics, where the water-saturated strata are regarded as composed of single-phased materials. Therefore, it seems necessary to consider the presence of pore fluids (water, air etc.) and make corresponding correction according to concrete situations.

根据笔者的饱和流体孔隙介质中波的传播理论,具体研究了地震波在含水地层中的耗散和弥散效应。数值结果表明,影响地震波在含水地层中传播的重要因素,除频率外,是固相骨架和水的弹性波阻抗的比值和介质的渗透性、孔隙率;而固相颗粒与固相骨架的可压缩性的差别因素则影响较小。估计了含气量对波传播速度的影响。指出了迄今在地球物理学中的震相分析,工程地震学中的测震结果的分析和解释,以及在地力学中处理动力问题时把含水地层按单相材料考虑都可能存在很显著的误差,需要考虑到孔隙流体(水,气)的存在和根据具体情况做些相应的修正。

In this poper, we discuss the iterative method of the acoustic impedance inversion for one-dimensional visco-elastic wave equation. Based on the one-dimensional equation and Kelvin-Vogit visco-elastic model, we have deduced a Vloterra integral equation of the second kind that is found to be suitable for numerical computation, then we apply iterative method to solve it.After we improve the present theory, the numerical computations show that this method has somewhat accuracy, performance in resistance to noise...

In this poper, we discuss the iterative method of the acoustic impedance inversion for one-dimensional visco-elastic wave equation. Based on the one-dimensional equation and Kelvin-Vogit visco-elastic model, we have deduced a Vloterra integral equation of the second kind that is found to be suitable for numerical computation, then we apply iterative method to solve it.After we improve the present theory, the numerical computations show that this method has somewhat accuracy, performance in resistance to noise and resolution and that the possibility to apply it to inverse field reflection data from plane parallel structures.

本文讨论了一维粘弹性波阻抗反演的迭代法。根据一维波动方程和KelvinVoigt粘弹模型导出了一个适于数值计算的第二类Volterra型积分方程,用迭代法求解。通过对已有方法的改进和完善,数值计算表明了该反演方法具有一定的精度、抗干扰能力和分辨率以及应用于实际水平层状地层反射地震记录反演阻抗的可能性.

Geophysical inversion is a computational process to restore subsurface geological structures and petrophysical properties from observed geophysical data.This paper outlined the evolution of seismic inversion technologies, from direct inversion to model based inversion, from linear inversion to nonlinear inversion, and from poststack inversion to prestack inversion. The inversion of elastic impedance will be one of directions of inversion development.Seismic inversion is on the way of integrating acoustic impedance...

Geophysical inversion is a computational process to restore subsurface geological structures and petrophysical properties from observed geophysical data.This paper outlined the evolution of seismic inversion technologies, from direct inversion to model based inversion, from linear inversion to nonlinear inversion, and from poststack inversion to prestack inversion. The inversion of elastic impedance will be one of directions of inversion development.Seismic inversion is on the way of integrating acoustic impedance with elastic impedance.

地球物理反演是利用观测数据恢复地下地质结构和岩石性质的方法。介绍了地震反演技术从直接反演到模型反演 ,从线性反演到非线性反演 ,以及从叠后反演到叠前反演的发展过程。弹性波阻抗反演的出现将成为反演进一步发展的方向之一 ,地震反演正走向声波波阻抗与弹性波阻抗相结合的道路。

 
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