Fiber Optic Distributed Pressure Sensor Based on Brillouin Scattering

Méndez, Alexis; Diatzikis, Evangelos V.

doi:10.1364/ofs.2006.the46

Cited by 17 publications

(4 citation statements)

References 5 publications

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“…The core principle of DPS is the conversion of hydrostatic pressure acting along a coated optical fibre, into a distributed mechanical strain [98]. Measurements of distributed pressure can be thus inferred by converting the applied hydrostatic pressure into distributed mechanical strain acting on the fibre, and measuring the strain changes by the Brillouin scattering frequency shifts they experience [99].…”

Section: Distributed Pressure Sensing (Dps)mentioning

confidence: 99%

Optical Fibre-Based Sensors for Oil and Gas Applications

Johny

Amos

Prabhu

2021

Sensors

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Oil and gas (O&G) explorations moving into deeper zones for enhanced oil and gas recovery are causing serious safety concerns across the world. The sensing of critical multiple parameters like high pressure, high temperature (HPHT), chemicals, etc., are required at longer distances in real-time. Traditional electrical sensors operate less effectively under these extreme environmental conditions and are susceptible to electromagnetic interference (EMI). Hence, there is a growing demand for improved sensors with enhanced measurement capabilities and also sensors that generates reliable data for enhanced oil and gas production. In addition to enhanced oil and gas recovery, the sensing technology should also be capable of monitoring the well bore integrity and safety. The sensing requirements of the O&G industry for improved sensing in deeper zones include increased transmission length, improved spatial coverage and integration of multiple sensors with multimodal sensing capability. This imposes problems like signal attenuation, crosstalks and cross sensitivities. Optical fibre-based sensors are expected to provide superior sensing capabilities compared to electrical sensors. This review paper covers a detailed review of different fibre-optic sensing technologies to identify a feasible sensing solution for the O&G industry.

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Section: Distributed Pressure Sensing (Dps)mentioning

confidence: 99%

Optical Fibre-Based Sensors for Oil and Gas Applications

Johny

Amos

Prabhu

2021

Sensors

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“…In one of the first works using Brillouin, Méndez and Diatzikis [34] investigated a fiber with a special coating combination of Nylon and silicone layers and an outside diameter of 1.2 mm. The fiber was exposed to increasing hydrostatic pressure in a high-pressure stainless steel vessel and interrogated with a commercial Brillouin optical time-domain reflectometer (BOTDR) at 1.55 � m. The reported pressure sensitivity is −3.34 MHz/MPa (expressed in term of Brillouin frequency shift, BFS, per unit pressure), with a ten-and five-fold enhancement with respect to an uncoated fiber (−0.38 MHz/MPa) and a standard SMF-28 fiber (−0.74 MHz/MPa), respectively.…”

Section: Brillouin-based Distributed Sensingmentioning

confidence: 99%

Distributed optical fiber pressure sensors

Schenato

Galtarossa

Pasuto

et al. 2020

Optical Fiber Technology

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The measurement of pressure by using distributed optical fiber sensors has represented a challenge for many years. While single-point optical fiber pressure sensors have reached a solid level of technology maturity, showing to be very good candidates in replacing conventional electrical sensors due to their numerous advantages, distributed sensors are still a matter of an intense research activity aimed at determining the most proper and robust pressure-sensitivity enhancement mechanism. This paper reviews early and recent works on distributed pressure sensors, classifying the sensors according to the sensing mechanism. For each type of mechanism, the issues and potentials are analyzed and discussed.

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“…A different approach for dam and dike safety monitoring consists in detecting the seepage anomalies by measuring the distributed pore pressure inside the structure, as outlined by Fell, et al [4]. There are three main ways to measure pressure with DFO technologies: 1) by measuring the elongation induced by the change in fiber length due to the radial pression on the fiber (Poisson's effect) [16]; 2) by measuring the pressure-induced birefringence using special fiber (e.g., photonic crystal fiber) [17]- [18]; 3) by modifying the geometry of the sensor, the external pressure can be transferred as an elongation onto the fiber [19]. However, with the first two methods, the pressure measurement accuracy is rather low (meters of water pressurehead variations) and not suitable for application in dam and dike monitoring.…”

Section: Introductionmentioning

confidence: 99%

A Novel Distributed Fiber-Optic Hydrostatic Pressure Sensor for Dike Safety Monitoring

Höttges,

Rabaiotti,

Facchini

2023

IEEE Sensors J.

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Pore water pressure is the main driving force for soil collapse in nature. River dikes, earth dams and the foundation of structures built in water are eroded by internal infiltration into the soil (seepage / piping) or flow (scouring / overtopping). Climate change and the spread of urbanization increase the fragility of areas prone to flooding. Current methodologies for early detection of ongoing damage caused by water to these structures are inadequate for preventing structural collapse. Traditional hydrogeological monitoring is based on visual inspection of the infrastructure. In this research, a novel distributed fiber optic pressure sensor (DPS) was developed to measure variations in the pore water pressure with a spatial resolution of decimeters and over lengths in the order of kilometers. Extensive controlled pressure and temperature variation tests were carried out for calibrating water pressure and temperature sensitivity of the DPS. The resulting design of the sensor achieved a high sensitivity of 0.1 kPa (1 cmH2O). Additionally, the DPS functionality was validated in a reduced scale test embankment.

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Fiber Optic Distributed Pressure Sensor Based on Brillouin Scattering

Cited by 17 publications

References 5 publications

Optical Fibre-Based Sensors for Oil and Gas Applications

Optical Fibre-Based Sensors for Oil and Gas Applications

Distributed optical fiber pressure sensors

A Novel Distributed Fiber-Optic Hydrostatic Pressure Sensor for Dike Safety Monitoring

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