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	3-d numerical mode-matching (nmm) method for resistivity logging responses in nonsymmetric conditions
	Tan Mao-Jin; Zhang Geng-Ji; Yun Hua-Yun; Zhao Wen-Jie
刊名	Chinese journal of geophysics-chinese edition
	2007-05-01
卷号	50期号:3页码:939-945
关键词	Nonsymmetric conditions Resistivity logging responses 3-d numerical mode-matching (nmm) method Generalized eigenvalue problem
ISSN号	0001-5733
通讯作者	Tan mao-jin(tanmj211@sohu.com)
英文摘要	Three-dimension (3-d) numerical mode-matching (nmm) is selected to deal with resistivity logging responses in nonsymmetric conditions. first, an appropriate descartes' s reference frame is set up - the plane of deviated borehole and normal of formation is regarded as xoy, and formation strike is regarded as z axis. in the xoy plane, the finite-element method (fem) is used and a series of 2-d generalized eigenvalue problems are solved; whereas vertical analytic is adopted along z axis. in analytical section, the medium is sliced into some layers artificially, and the relationship between adjacent layers is derived according to the electromagnetic field continuity, namely boundary transition matrices rather than reflection and transmission matrixes theory in the 2-d nmm method. finally, a system of linear equations is constructed according to the natural boundary conditions that the top bed has no up-going wave or the bottom bed has no down-going wave, and the potential of every point of formation is solved and the apparent resistivity is computed. in the given formation model, the results of 3-d nmm agree well with previous ones of 2-d nmm and fem in symmetry conditions. furthermore, the algorithm also applies to titled formation and elliptical borehole; and some examples illustrate how all kinds of tilt degrees affect logging response results.
WOS关键词	INDUCTION ; TOOLS
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000246836500037
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2380989
专题	中国科学院大学
通讯作者	Tan Mao-Jin
作者单位	1.Chinese Acad Sci, Grad Univ, Lab Computat Geodynam, Beijing 100049, Peoples R China 2.China Univ Petroleum, Dongying 257061, Peoples R China 3.Shengli Well Logging Co, SINOPEC, Dongying 257096, Peoples R China 4.Shengli Petr Adm Bur, SINOPEC, Dongying 257000, Peoples R China
推荐引用方式 GB/T 7714	Tan Mao-Jin,Zhang Geng-Ji,Yun Hua-Yun,et al. 3-d numerical mode-matching (nmm) method for resistivity logging responses in nonsymmetric conditions[J]. Chinese journal of geophysics-chinese edition,2007,50(3):939-945.
APA	Tan Mao-Jin,Zhang Geng-Ji,Yun Hua-Yun,&Zhao Wen-Jie.(2007).3-d numerical mode-matching (nmm) method for resistivity logging responses in nonsymmetric conditions.Chinese journal of geophysics-chinese edition,50(3),939-945.
MLA	Tan Mao-Jin,et al."3-d numerical mode-matching (nmm) method for resistivity logging responses in nonsymmetric conditions".Chinese journal of geophysics-chinese edition 50.3(2007):939-945.

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