The oil production industry faces monumental challenges when it comes to monitoring pressure and temperature in wells. Extreme conditions, such as hydrostatic pressures exceeding 1,000 bar and temperatures exceeding 200°C, demand innovative solutions. Traditional electrical sensors prove to be limited, demanding devices that offer precision, resistance to corrosion and immunity to electromagnetic interference.
This device is designed to overcome the challenges associated with monitoring oil wells, engineering and everyday applications. Its distributed measurement capability and the use of advanced optic fiber technologies guarantee accurate results, even in adverse conditions.
The Optical Temperature and Pressure Sensor uses Bragg Gratings (FBG) in an optical fiber to measure variations in the amplitude, phase, frequency and polarization of light. The concept is based on the construction of a network located in the fiber, whose wavelength is affected by disturbances in the environment. The device is totally passive, eliminating the need for on-board electronics for transduction, and its unique fixation guarantees stability and avoids “creep” phenomena, which affect conventional sensors
Patent title:
Offset-free pressure and temperature optical sensor
Deposit Number:
PI 0606051 0
Pontifical Catholic University of Rio de Janeiro – PUC-Rio
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