Effect of borehole casing on tem response


статья в журнале
Авторы: Kozhevnikov N.O.   (ИНГГ СО РАН)   Antonov E.Y.   (ИНГГ СО РАН)   Kamnev Y.K.   (ИНГГ СО РАН)   Olenchenko V.V.   (ИНГГ СО РАН)   Plotnikov A.E.   (ИНГГ СО РАН)   Stefanenko S.M.   (ИНГГ СО РАН)   Shein A.N.   (ИНГГ СО РАН)  
дата публикации: 2014
реферат:
The effect the metal casing of a vertical borehole may exert on transient electromagnetic (TEM) responses has been studied in a field experiment. Eddy currents in the casing affect transients only slightly at early times, but the casing effect predominates at late times. Therefore, early-time TEM response measured near a borehole can provide information on shallow subsurface. The late-time TEM signals induced by the eddy currents in the casing show exponential behavior b ъexp(- t /t). The time constant t refers to the rate of eddy current decay in the casing; the amplitude b
первоисточник: Russian Geology and Geophysics
том: 11
страницы: 1333-1339
ISBN:
ISSN:
внешние ссылки:
WoS   WoS (цитирование)
DOI  
РИНЦ SPIN  
Scopus  

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полный текст статьи

rgg-2014-11-1333