Method and apparatus for formation evaluation and borehole size determination

The quality factor of a NMR-antenna depends upon mud conductivity, formation resistivity and the borehole size. The Q of the antenna is measured. From measurement of one of formation conductivity or borehole size, the other can be determined.

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Bibliographic Details
Main Authors Chen, Songhua, Edwards, Carl M, Kruspe, Thomas, Blanz, Martin, Thern, Holger F, Beard, David R
Format Patent
LanguageEnglish
Published 16.09.2008
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Summary:The quality factor of a NMR-antenna depends upon mud conductivity, formation resistivity and the borehole size. The Q of the antenna is measured. From measurement of one of formation conductivity or borehole size, the other can be determined.