電磁隨鉆測量的電激勵模式的分析
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量的電激勵模式的分析方法。這一方法可計算電磁隨鉆測量研究中的重要參數(shù),如地面信號場強分布規(guī)律及其與工作頻率的依賴關(guān)系,發(fā)射機構(gòu)的輸入阻抗等,從而為隨鉆測量系統(tǒng)的總體設(shè)計提供基本的依據(jù)。用這一方法對試驗?zāi)Ｐ秃同F(xiàn)場試驗進行的計算與試驗結(jié)果很好符合。
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關(guān)鍵詞:
- 電磁隨鉆測量; 電磁散射; 電激勵模式
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,電磁隨鉆測量,中國科學(xué)院電子學(xué)研究所內(nèi)部試驗報告,1988年.[4]中國科學(xué)院電子學(xué)研究所隨鉆測量電磁波論證組,電磁隨鉆測量現(xiàn)場試驗報告,1998年. -
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