%0 Journal Article
%T AN ANALYSIS OF THE ELECTRICAL EXCITATION MODE OF EM-MWD<br>电磁随钻测量的电激励模式的分析
%A Wang Weiyan
%A Zhang Shourong
%A <br>王卫延
%A 张守融
%J 电子与信息学报
%D 1991
%I 
%X 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 Electromagnetic measurement while drilling
%K Electromagnetic scattering
%K Electrical excitation mode<br>电磁随钻测量
%K 电磁散射
%K 电激励模式
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=1319827C0C74AAE8D654BEA21B7F54D3&jid=EFC0377B03BD8D0EF4BBB548AC5F739A&aid=06682F6E657E1041&yid=116CB34717B0B183&vid=FC0714F8D2EB605D&iid=B31275AF3241DB2D&sid=C7461453A367FC85&eid=6341CCF6B158C5F9&journal_id=1009-5896&journal_name=电子与信息学报&referenced_num=0&reference_num=4