Distributed temperature sensing
OverviewMeasuring principle—Raman effectMeasuring principle—OTDR and OFDR technologyConstruction of sensing cable and system integrationLaser safety and operation of systemFor temperature estimationApplications
Distributed temperature sensing systems (DTS) are optoelectronic devices which measure temperatures by means of optical fibres functioning as linear sensors. Temperatures are recorded along the optical sensor cable, thus not at points, but as a continuous profile. A high accuracy of temperature determination is achieved over great distances. Typically the DTS systems can locate the temperature to a spatial resolution of 1 m with accuracy to within ±1 °C at a resolution of 0.01 °C. Measurement distan
Distributed fiber-optic temperature monitoring in boreholes of a
In the presented project, three boreholes of a seasonal geothermal energy storage with a vertical depth of down to 500 meters were instrumented with distributed fiber-optic sensors.
New methods in geophysical exploration and monitoring with DTS and
Apart from boreholes, fiber-optic sensing also opens up new possibilities for geophysical measurements at surface, especially since extensive networks of fiber-optic cables for telecommunication and data
Fiber Optic Distributed Temperature Sensing | US EPA
Abstract: Distributed Temperature Sensing (DTS) technology enables downhole temperature monitoring to study hydrogeological processes at unprecedentedly high frequency and
Real-Time Fiber Optic Monitoring Applications in
An operator in Mexico used the distributed temperature sensing (DTS) run with coil tubing to record temperature profiles along the carbonate
Fiber Optics | GEO PSI
Distributed Temperature Sensing (DTS) utilizes multi-mode Fiber Optic cables to measure distributed temperature data. This generates a continuous temperature profile along the
Downhole Cables
TEF cable is the sensor element for modern distributed fiber optic sensing technologies of DTS and DAS, which have become essential well management tools for monitoring important technologies
Applications of Distributed Fiber Optic Strain Sensing for Real-Time
To analyse the downhole performance of mud displacement and cement slurry during the cementing processes, this work focuses on real-time well monitoring technologies using fiber optic cables which
Fiber-optic technologies and methods for downhole monitoring
Optical time-domain reflectometry (OTDR): measurement of backscattered light for many sampling points along fiber. Phase-OTDR: phase of backscattered light changes as the fiber is stretched, e.g.
Research on calibration method of downhole optical fiber temperature
Hydrologic research is a very demanding application of fiber-optic distributed temperature sensing (DTS) in terms of precision, accuracy and calibration.
An Industry Overview of Downhole Monitoring Using Distributed
Abstract. Distributed Temperature Sensing (DTS) system using optical fiber has been deployed for downhole monitoring over two-decades. Several technological advancements led to a
Fiber Optic Sensing for Downhole Monitoring in Oil & Gas
Explore how fiber optic sensing is transforming downhole monitoring for safer, more efficient oil and gas operations.
An Improved Capillary Tube Downhole Temperature and Pressure
In view of the characteristics of traditional capillary pressure detection technology, such as flexible measurement and intuitive reading, this paper introduces the distributed optical fiber
Applications of Distributed Fiber Optic Strain Sensing for Real-Time
This contribution focuses on the potential of real-time downhole monitoring techniques along fiber optic cables which are permanently installed behind casing. Distributed fiber optic temperature and strain
Fiber-Optic Sensing in Geophysics, Temperature Measurements
For measurements in boreholes, mainly electronic sensors have previously been used, either incorporated in downhole tools for wireline logging, or deployed as thermistor chains. There
Application of fiber optics in oil and gas field development
The application of optical fiber aids data quantification, which facilitates the real-time monitoring of oil reserves, asset location, and temperature. Although conventional methods have
Research on calibration method of downhole optical fiber temperature
Based on the study of the principle of optical fiber temperature measurement, the factors that cause the deviation of optical fiber temperature sensing are analyzed, and the method of fiber temperature
Fiber optic pressure and temperature sensors for oil
One cable with two DAS fibers, two DTS fibers, and one fiber for a downhole fiber optic pressure/temperature gauge were clamped to ¾-in. sucker rods and installed to 3.7 km measured
This reference is intended for preliminary fiber and communications infrastructure research. Optical interface, fiber type, port or core capacity, electrical input and output, enclosure protection, cooling, installation limits and applicable standards must be verified for the specific project.