電磁隨鉆測(cè)量的電激勵(lì)模式的分析
AN ANALYSIS OF THE ELECTRICAL EXCITATION MODE OF EM-MWD
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摘要: 本文提出一種電磁隨鉆測(cè)量的電激勵(lì)模式的分析方法。這一方法可計(jì)算電磁隨鉆測(cè)量研究中的重要參數(shù),如地面信號(hào)場(chǎng)強(qiáng)分布規(guī)律及其與工作頻率的依賴關(guān)系,發(fā)射機(jī)構(gòu)的輸入阻抗等,從而為隨鉆測(cè)量系統(tǒng)的總體設(shè)計(jì)提供基本的依據(jù)。用這一方法對(duì)試驗(yàn)?zāi)P秃同F(xiàn)場(chǎng)試驗(yàn)進(jìn)行的計(jì)算與試驗(yàn)結(jié)果很好符合。
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關(guān)鍵詞:
- 電磁隨鉆測(cè)量; 電磁散射; 電激勵(lì)模式
Abstract: A method for analyzing electrical excitation mode of electromagnetic measurement while drilling (EM-MWD) is proposed. By this method, a lot of calculations for EM-MWD has been done, and some very important data have been obtained, in which the electric field intensity distribution patterns on the earth s surface, the dependent relations of electric field intensity upon the frequency and the input impedance of the transmission equipment are included. All of the calculated results agree well with that of the laboratory test and the shallow well test. -
K.M.Chen, Interaction of Electromagnetic fields with biological bodies in Research Topics in Electromagnetic Wave Theory, Ed. J.A. Kong, John WileySons Inc. (1981).[2]K.M.Chen, Proc. IEEE, 65(1977), 1202.[3]陳志雨,靳小州,電磁隨鉆測(cè)量,中國(guó)科學(xué)院電子學(xué)研究所內(nèi)部試驗(yàn)報(bào)告,1988年.[4]中國(guó)科學(xué)院電子學(xué)研究所隨鉆測(cè)量電磁波論證組,電磁隨鉆測(cè)量現(xiàn)場(chǎng)試驗(yàn)報(bào)告,1998年. -
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