Patent ID: 6766703
Filing Date: 2004-07-27
Classification: E21B

Abstract:
Apparatus for sensing one or more physical parameters at a remote location, comprising:a first tubing containing a communication cable and a sensor in communication therewith, the sensor being located within the tubing proximate the remote location; a second tubing having a first end in fluid communication with the first tubing proximate the sensor, and a second end; a reservoir containing a barrier fluid, the reservoir having a first opening in fluid communication with the second end of the second tubing, and a second opening in fluid communication with the remote location; and a first flow control element disposed within the second tubing between the first tubing and the reservoir, the first flow control element configured to be actuated between a first state allowing fluid flow in the second tubing in any direction, and a second state restricting fluid flow in the second tubing from the reservoir to the first tubing.