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Title: Low temperature monitoring system for subsurface barriers

Patent ·
OSTI ID:1013652

A system for monitoring temperature of a subsurface low temperature zone is described. The system includes a plurality of freeze wells configured to form the low temperature zone, one or more lasers, and a fiber optic cable coupled to at least one laser. A portion of the fiber optic cable is positioned in at least one freeze well. At least one laser is configured to transmit light pulses into a first end of the fiber optic cable. An analyzer is coupled to the fiber optic cable. The analyzer is configured to receive return signals from the light pulses.

Research Organization:
Shell Oil Company (Houston, TX)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-00OR22725
Assignee:
Shell Oil Company (Houston, TX)
Patent Number(s):
7,575,053
Application Number:
11/409,563
OSTI ID:
1013652
Country of Publication:
United States
Language:
English

References (1)

Evaluation of downhole electric impedance heating systems for paraffin control in oil wells journal January 1992