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《Journal of Xi'an Shiyou University(Natural Science Edition)》 2008-01
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Forward response analysis of array lateral logging tool

WU Jie,XIE Wei-wei,XIE Xi-cao,ZHANG Jun,XU Xiao-qian(Key Laboratory of Education Ministry for Photoelectric Logging and Detection,College of Electronic Engineering,Xi'an Shiyou University,Xi'an 710065,Shaanxi,China)  
Being similar to array induction logging,array lateral logging(ALL) can provide the several logging response curves of different detecting depth.The characteristics of the ALL response of ideal logging model indicate that the lateral logging tool has advantages of high vertical resolution and great radical detecting range.In order to find out the response characteristics of the tool in actual logging stratum,the effects of the thickness and the invasion radius of target zone on the logging responses of different 2D stratum models are studied based on the simulation data obtained by finite element method(FEM).It is shown that the responses of ALL will vary with the parameters of the different stratum models,the thickness of the target zone and the resolution matching of the response curves of different detecting depth.The effect of the invasion radius on the responses of ALL is obvious.Except the response curve of shallowest radial depth,the effects of the invasion radius on the response curves of other radial depth are near to the same.When the invasion radius is greater,the response curves of different detecting depth will cross each other.The tool constant(K) will influence the response curves of ALL,which is determined by the parameters(resistivity of invasion zone,resistivity of original formation,resistivity of target zone) of the stratum model.
【CateGory Index】: P631.83
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