06727828 is referenced by 13 patents.

A system for protecting the transmission of signals from and/or to a tool in a high pressure environment. The system includes a tool connected to a signal transmission line, such as an electrical cable or optical fiber. The signal transmission line is surrounded by a protective tube that is connected to the tool by a connector having a hollow chamber in communication with the interior of the tube. A fluid, such as a dielectric liquid, is disposed within the connector and the tubing at a pressure higher than the environmental pressure. In the event of a leak at, for instance, the connector, the high pressure fluid flows outwardly rather than allowing the inflow of deleterious fluid from the environment.

Title
Pressurized system for protecting signal transfer capability at a subsurface location
Application Number
9/660693
Publication Number
6727828 (B1)
Application Date
September 13, 2000
Publication Date
April 27, 2004
Inventor
Joseph P Varkey
Missouri City
TX, US
Michael R Johnson
Sugar Land
TX, US
Alexandre G E Kosmala
Houston
TX, US
Christophe M Rayssiguier
Houston
TX, US
David L Malone
Sugar Land
TX, US
Agent
Van Someren P C
US
Agent
Brigitte Jeffery Echols
US
Jeffery E Griffin
US
Assignee
Schlumberger Technology Corporation
TX, US
IPC
G01V 1/22
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