Schlumberger Technology Corporation

Steven J Pringnitz

John R Lovell

Robert J Utter

Christopher C Bogath

Ian Silvester

Kyel Hodenfield

An apparatus for supporting a retrievable downhole component within a drill collar includes a sleeve that is positionable about the downhole component and is mounted within the drill collar. The sleeve is adapted to limit the lateral movement of the downhole component. The sleeve includes a series of fins or is lined with an energy absorbing material which protects the component from shock and vibration while at the same time enables the component to be retrieved should the drill string become stuck in the borehole.

Method and apparatus for supporting a downhole component in a downhole drilling tool

A formation evaluation system for a subterranean formation penetrated by a wellbore. The formation evaluation system is provided with a downhole tool and a sensor. The downhole tool is positionable in the wellbore. The downhole tool has a downhole electromagnetic unit for communication with a surface electromagnetic unit. The sensor determines at least one wellsite parameter from the electromagnetic signal. The downhole tool and the surface electromagnetic unit are adapted to pass electromagnetic signals there between. The electromagnetic signals pass through the subterranean formation whereby the senor determines the at least one wellsite parameter from the electromagnetic signal.

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Katy, TX, United States of America

Steven J Pringnitz