Distributed fiber optic temperature sensing: A new tool for long-term and short-term temperature monitoring in boreholes
- GESO GmbH, Jena (Germany)
The distributed fiber optic temperature sensing technique represents a new physical approach for temperature measurements in geosciences. This method was applied for long-term surveying of temperature variations with time caused by injecting and extracting hot water in a 600-m-deep well. The measuring system was installed as a permanent sensor in the annulus between casing and tubings. The injection/extraction regime was monitored by repeating the measurements every few weeks. Short-term variations of the temperature during injection and extraction were studied by recording the temperature profile every 1 min over a time period of several hours. Testing shows that the fiber optic temperature sensing technique opens new possibilities for measuring the actual temperature along the entire length of a borehole as well as for monitoring short-term and long-term temperature variations.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 458477
- Report Number(s):
- CONF-950514-; ISSN 0090-8312; TRN: IM9717%%263
- Journal Information:
- Energy Sources, Vol. 19, Issue 1; Conference: World geothermal congress: worldwide utilization of geothermal energy, Florence (Italy), 18-31 May 1995; Other Information: PBD: Jan 1997
- Country of Publication:
- United States
- Language:
- English
Similar Records
Distributed Fiber Optic Arrays: Integrated Temperature and Seismic Sensing for Detection of CO2 Flow, Leakage and Subsurface Distribution (Final Report)
A Fiber-Optic Borehole Seismic Vector Sensor System for Geothermal Site Characterization and Monitoring