Scott C Chesser

US Patent:

6557794, May 6, 2003

Filed:

Aug 17, 2001

Appl. No.:

09/932251

Inventors:

Richard A. Rosthal - Houston TX
Dean M. Homan - Sugar Land TX
Dzevat Omeragic - Sugar Land TX
Stephen D. Bonner - Sugar Land TX
Brian Clark - Sugar Land TX
Scott S. Chesser - Richmond TX
Thomas D. Barber - Houston TX

Assignee:

Schlumberger Technology Corporation - Sugar Land TX

International Classification:

B65H 3916

US Classification:

2424441, 324338

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.