Coil shielding method for selective attenuation of an electromagnetic energy field component
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United States of America Patent
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May 6, 2003
Grant Date -
Jan 24, 2002
app pub date -
Aug 17, 2001
filing date -
Dec 1, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
A shield apparatus for use in conjunction with a well tool to selectively attenuate one or more electromagnetic energy field components as the components interact with the shield. The shield composed of a flexible strip or conductive body and comprising at least one sloped slot or sloped conductive element therein. The shield being adapted to surround an antenna mounted on a well tool. A method for rotating the axis of the magnetic dipole of a transmitter or receiver coil. A method for winding and shielding an electric coil such that the resultant coil emits or receives selected electromagnetic energy field components.
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