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resistivity inversion
相关语句
  电阻率反演
     3D resistivity inversion of vertical finite line source using conjugate gradients
     基于共轭梯度法的垂直有限线源三维电阻率反演
短句来源
     High density electrical resistivity inversion based on sequential quadratic programming method
     基于序列二次规划方法的高密度电阻率反演
短句来源
     During the controlled-source audiomagnetotellurics operation,dipole equatorial equipment was used,by the use of V6-A electromagnetic sounder of Phoenix Company determined Ex and Hy,then through collected original data value mute,noise elimination,filtering,correcting and inversion imaging,every line's resistivity from inversion and resistivity inversion section determined.
     在可控源音频大地电磁法施工中采用赤道偶极装置,利用PHOENIX公司的V6-A电磁测深仪,测量Ex和Hy,经对采集的原始数据进行剔值、去噪、滤波、校正处理,及反演成像,得到了每条测线反演的电阻率数据,并绘制出各其电阻率反演断面图。
短句来源
     Resistivity inversion is an important environmental correction method for electrical logging curves.
     电阻率反演是电测井曲线校正的重要方法。
短句来源
     Prior resistivity inversion algorithms are based on an over_simple step_invasion model,so they cannot give a realistic invasion image,furthermore,the inversion results must be influenced by the ideal invasion model.
     以往的电阻率反演算法均基于简化的阶跃式侵入模型 ,不能给出真实侵入过程的图象 ,反演结果也受到这一理想侵入模型的限制。
短句来源
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  “resistivity inversion”译为未确定词的双语例句
     Progress of Study on 3D Resistivity Inversion Methods
     电阻率三维反演方法研究进展
短句来源
     STUDY ON SOME PROBLEMS FOR 3D RESISTIVITY INVERSION USING CONJUGATE GRADIENT
     利用共轭梯度方法的电阻率三维反演若干问题研究
短句来源
     Study of Dual Induction Logging Resistivity Inversion and Its Application to Tuha Oil Field.
     双感应电阻率反演研究及在吐哈油田的应用
短句来源
     Study of stability and reliability of 3-D resistivity inversion
     电阻率三维反演稳定性和可靠性研究
短句来源
     While conjugate gradient(CG) relaxation technique is used to solve the inverse equations and Rodi method is introduced to compute the Jacobi matrix G,only one forward calculation is required in each inversion iteration,thus the 3-D resistivity inversion is computed much quickly.
     运用共轭梯度迭代算法解三维反问题中的线性方程组 ,并结合求 Jacobi矩阵 G的 Rodi算法 ,则每次反演迭代仅需一次正演计算 ,大大加快了计算速度 ,实现了直流电阻率三维快速反演。
短句来源
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  相似匹配句对
     Inversion of Departure Resistivity Log.
     横向电阻率测井反演计算
短句来源
     Well-surface 3-D resistivity inversion
     井地三维电阻率反演研究
短句来源
     On Inversion and Emphasis
     谈英语的倒装与强调
短句来源
     Resistivity Tomography
     电阻率层析成像技术
短句来源
     The third is inversion;
     第三是数据的解释以及反演。
短句来源
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  resistivity inversion
The effect of intrinsic model noise upon resistivity inversion
      


Frechet derivative,or differential sensitivitie,which presents the relationship between the perturbation of model and the corresponding change in the datum,is an important factor in geophysical in version,In this paper,a linear self-adjoint differential operator and Green′s function are used to obtain an analytic expression of the Frechet derivatives for elastic and resistivity inversion,It is shown that the expression depends upon the Green′s function G or its gradient G. The finite element method is...

Frechet derivative,or differential sensitivitie,which presents the relationship between the perturbation of model and the corresponding change in the datum,is an important factor in geophysical in version,In this paper,a linear self-adjoint differential operator and Green′s function are used to obtain an analytic expression of the Frechet derivatives for elastic and resistivity inversion,It is shown that the expression depends upon the Green′s function G or its gradient G. The finite element method is suggested to the numerical com putation of the Green′s function of an arbitrary background and the derivative of a local polynomial is used for an approach to the gradient of Green′s function. Finally,as an experiment.the numerical results of Frechet derivatives in resistivity in version are given.

在地球物理参数反演中,观测的物理场量,例如波场中的位移或电流场中的电位,对于介质参数的偏导数的计算是非常重要的。本文采用自伴随算子和格林函数的方法给出了弹性波场和稳恒电流场问题的Frechet导数解析式。该式表明,Frechet导数可由格林函数G及其梯度△G求得。把任意场源正演问题的解和Feechet导数的计算统一起来,并提出用有限元方法计算任意背景场下的格林函数,从而得到Frechet导数的数值解。文中以稳恒电流场问题为例,给出了直流电法视电阻率偏导数的数值结果。

In this paper, three kinds of improvement are made against the disadvantages of Zhody inversion method. The inversion procedure of major digital model could stably converge if the depth transformation factor used to transform the space of electrode to depth is fixed; If a iterative coefficient is added to the formula used to adjust apparent resistivity, the calculated value will rapidly access to observation value, therefore the number of iteration is lowered. The noise will be effectively oppressed if filter...

In this paper, three kinds of improvement are made against the disadvantages of Zhody inversion method. The inversion procedure of major digital model could stably converge if the depth transformation factor used to transform the space of electrode to depth is fixed; If a iterative coefficient is added to the formula used to adjust apparent resistivity, the calculated value will rapidly access to observation value, therefore the number of iteration is lowered. The noise will be effectively oppressed if filter factor is added to the data involved noise. The availability of Zhody inversion method used to two dimensional resistivity inversion is verified through digital simulation and field data. The simulation includes simple model and complex model, and both of them give us quite ideal application results.

针对佐迪反演方法在二维拟断面应用中的缺陷进行了三个方面的改进:固定佐迪反演方法中用于转换电极距和深度关系的深度转换因子,可使绝大多数数字模型的反演过程稳定收敛;在调整视电阻率的公式中加入一个迭代系数,可使计算值快速趋向于观测值,减少了迭代次数;对于含有噪声的数据,加入滤波因子可以在一定程度上抑制噪声。通过数字模拟和野外实测数据对改进后的佐迪反演方法在二维电阻率反演应用中的可行性进行了验证。模拟研究包含了简单模型,也包含一些复合模型,二者均取得较理想的应用效果。

Successful geophysical inversion depends on suitable inversion method, Geophysical inversion is one of the typical multi-parameter and non-linear inversion problem. We discussed fast simulated annealing algothem and its application to resistivity interpretation. After the study of numerucal simulate and field data with the method we stated, it is showed that fast simulated annealing method has been better applied to 2-D resistivity inversion.

电阻率成像反演是一种典型的多参数、非线性反演问题。模拟退火方法将组合优化问题与统计力学中的热平衡问题相类比,开辟了求解组合优化问题的新途径。本文通过数字模拟及对野外资料的处理,证明快速模拟退火方法在二维电阻率成像反演中具有较好的应用前景。

 
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