发明名称 |
Shielding apparatus for selective attenuation of an electromagnetic energy field component |
摘要 |
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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申请公布号 |
US2002008520(A1) |
申请公布日期 |
2002.01.24 |
申请号 |
US20010932249 |
申请日期 |
2001.08.17 |
申请人 |
SCHLUMBERGER TECHNOLOGY CORPORATION |
发明人 |
CLARK BRIAN;ROSTHAL RICHARD A.;HOMAN DEAN M.;OMERAGIC DZEVAT;BONNER STEPHEN D.;CHESSER SCOTT S.;BARBER THOMAS D. |
分类号 |
G01V3/28;(IPC1-7):G01V3/08 |
主分类号 |
G01V3/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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