| 轴对称二维任意非均匀介质中偏轴点源激励的位场数值解 |
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| 引用本文： | 聂在平,陈晓光.轴对称二维任意非均匀介质中偏轴点源激励的位场数值解[J].地球物理学报,1997,40(1):127-135. |
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| 作者姓名： | 聂在平 陈晓光 |
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| 作者单位： | 电子科技大学微波工程系, 成都 610054 |
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| 摘 要： | 对具有任意多平面分层，且每一平面分层中又具有任意多径向柱面分层的复杂非均匀介质中偏轴点源激励的位场分布进行了高效数值分析．对于这种三维非均匀位场分布，应用数值本征模展开描述其径向的基模和高阶模，用集合反射矩阵和集合透射矩阵匹配各平面界面的边界条件，各平面分层中的位场则用递推算法获得．偏轴点源位场的求解，为电法测井中高分辨薄五层探测提供了理论分析基础．
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| 关 键 词： | 非均匀介质 电法测井 偏轴激励 数值模拟 |
| 收稿时间： | 1995-05-25 |
THE NUMERICAL SOLUTION OF THE POTENTIAL EXCITED BY AN OFFAXIAL POINT SOURCE IN AXISYMMETRIC 2-D INHOMOGENEOUS MEDIA |
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| NIE ZAI-PING , CHEN XIAO-GUANG.THE NUMERICAL SOLUTION OF THE POTENTIAL EXCITED BY AN OFFAXIAL POINT SOURCE IN AXISYMMETRIC 2-D INHOMOGENEOUS MEDIA[J].Chinese Journal of Geophysics,1997,40(1):127-135. |
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| Authors: | NIE ZAI-PING CHEN XIAO-GUANG |
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| Institution: | University of electric Science and Technology of China, Chengdu 610054, China |
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| Abstract: | In this paper an efficient numerical analysis for the potential excited by anoffaxial point source in inhomogeneous media with arbitrary number of planar bedsand cylindrical layers in each bed has been made. The numerical eigenmode expansionmethod was used to describe the radial distribution of various modes of the field resultedfrom the point source, and the general reflection and the general transmission matrix wereintroduced to match the boundary conditions on the planar interfaces. The potential ineach bed can be obtained by a recursive way. The solutions of the potential excitedby offaxial point source provide a theoretical basis for research of the electricallogging method with high resolution. |
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| Keywords: | Inhomogeneous media Electrical logging Offaxial excitation Numerical modeling |
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