Applications of optical fiber sensors in subsea and downhole oil well environments

1999 ◽  
Author(s):  
Alexis Mendez ◽  
Rob Dalziel ◽  
Neil Douglas
Keyword(s):  
Optical Fiber ◽  
Optical Fiber Sensors ◽  
Oil Well ◽  
Fiber Sensors

Casing pipe damage detection with optical fiber sensors: a case study in oil well constructions

2010 ◽  
Author(s):  
Zhi Zhou ◽  
Jianping He ◽  
Minghua Huang ◽  
Jun He ◽  
Jinping Ou ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Damage Detection ◽  
Optical Fiber Sensors ◽  
Oil Well ◽  
Fiber Sensors ◽  
Casing Pipe

scholarly journals Casing Pipe Damage Detection with Optical Fiber Sensors: A Case Study in Oil Well Constructions

2010 ◽  
Vol 2010 ◽  
pp. 1-9 ◽  
Author(s):  
Zhi Zhou ◽  
Jianping He ◽  
Minghua Huang ◽  
Jun He ◽  
Genda Chen
Keyword(s):  
Optical Fiber ◽  
Relative Error ◽  
Warning System ◽  
Optical Fiber Sensors ◽  
Time Domain Reflectometry ◽  
Oil Well ◽  
In Situ Tests ◽  
Fiber Sensors ◽  
Casing Pipe ◽  
Fbg Sensors

Casing pipes in oil well constructions may suddenly buckle inward as their inside and outside hydrostatic pressure difference increases. For the safety of construction workers and the steady development of oil industries, it is critically important to measure the stress state of a casing pipe. This study develops a rugged, real-time monitoring, and warning system that combines the distributed Brillouin Scattering Time Domain Reflectometry (BOTDR) and the discrete fiber Bragg grating (FBG) measurement. The BOTDR optical fiber sensors were embedded with no optical fiber splice joints in a fiber-reinforced polymer (FRP) rebar and the FBG sensors were wrapped in epoxy resins and glass clothes, both installed during the segmental construction of casing pipes. In situ tests indicate that the proposed sensing system and installation technique can survive the downhole driving process of casing pipes, withstand a harsh service environment, and remain intact with the casing pipes for compatible strain measurements. The relative error of the measured strains between the distributed and discrete sensors is less than 12%. The FBG sensors successfully measured the maximum horizontal principal stress with a relative error of 6.7% in comparison with a cross multipole array acoustic instrument.

scholarly journals A Review of Recent Distributed Optical Fiber Sensors Applications for Civil Engineering Structural Health Monitoring

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1818
Author(s):  
Mattia Francesco Bado ◽  
Joan R. Casas
Keyword(s):  
Structural Health Monitoring ◽  
Optical Fiber ◽  
Health Monitoring ◽  
Optical Fiber Sensors ◽  
Vibration Monitoring ◽  
Fiber Sensors ◽  
Structural Health ◽  
Comprehensive Collection ◽  
Monitoring Tools ◽  
Distributed Optical Fiber

The present work is a comprehensive collection of recently published research articles on Structural Health Monitoring (SHM) campaigns performed by means of Distributed Optical Fiber Sensors (DOFS). The latter are cutting-edge strain, temperature and vibration monitoring tools with a large potential pool, namely their minimal intrusiveness, accuracy, ease of deployment and more. Its most state-of-the-art feature, though, is the ability to perform measurements with very small spatial resolutions (as small as 0.63 mm). This review article intends to introduce, inform and advise the readers on various DOFS deployment methodologies for the assessment of the residual ability of a structure to continue serving its intended purpose. By collecting in a single place these recent efforts, advancements and findings, the authors intend to contribute to the goal of collective growth towards an efficient SHM. The current work is structured in a manner that allows for the single consultation of any specific DOFS application field, i.e., laboratory experimentation, the built environment (bridges, buildings, roads, etc.), geotechnical constructions, tunnels, pipelines and wind turbines. Beforehand, a brief section was constructed around the recent progress on the study of the strain transfer mechanisms occurring in the multi-layered sensing system inherent to any DOFS deployment (different kinds of fiber claddings, coatings and bonding adhesives). Finally, a section is also dedicated to ideas and concepts for those novel DOFS applications which may very well represent the future of SHM.

Chemical and Biological Applications Based on Plasmonic Optical Fiber Sensors

2021 ◽  
Vol 24 (5) ◽  
pp. 50-55
Author(s):  
Chiara Perri ◽  
Francesco Arcadio ◽  
Girolamo D'Agostino ◽  
Nunzio Cennamo ◽  
Giovanni Porto ◽  
...  
Keyword(s):  
Optical Fiber ◽  
Optical Fiber Sensors ◽  
Biological Applications ◽  
Fiber Sensors

scholarly journals Frequency Resolution Quantification of Brillouin-Distributed Optical Fiber Sensors

2016 ◽  
Vol 28 (21) ◽  
pp. 2367-2370 ◽  
Author(s):  
Yifei Yu ◽  
Linqing Luo ◽  
Bo Li ◽  
Kenichi Soga ◽  
Jize Yan
Keyword(s):  
Optical Fiber ◽  
Optical Fiber Sensors ◽  
Frequency Resolution ◽  
Fiber Sensors ◽  
Distributed Optical Fiber
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