Distributed fiber optic sensing presents unique features that have no match in conventional sensing techniques. The ability to measure temperatures and strain at thousands of points along a single fiber is particularly interesting for the monitoring of elongated structures such as pipelines, flow lines, oil wells, and coiled tubing. Sensing systems based on Brillouin and Raman scattering are used, for example, to detect pipeline leakages, to verify pipeline operational parameters and to prevent failure of pipelines installed in landslide areas, to optimize oil production from wells, and to detect hot spots in high-power cables. Recent developments in distributed fiber sensing technology allow the monitoring of 60 km of pipeline from a single instrument and of up to 300 km with the use of optical amplifiers. New application opportunities have demonstrated that the design and production of sensing cables are a critical element for the success of any distributed sensing instrumentation project. Although some telecommunication cables can be effectively used for sensing ordinary temperatures, monitoring high and low temperatures or distributed strain presents unique challenges that require specific cable designs. This contribution presents advances in long-range distributed sensing and in novel sensing cable designs for distributed temperature and strain sensing. This paper also reports a number of significant field application examples of this technology, including leakage detection on brine and gas pipelines, strain monitoring on gas pipelines and combined strain and temperature monitoring on composite flow lines, and composite coiled tubing pipes.
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February 2010
Research Papers
Long-Range Pipeline Monitoring by Distributed Fiber Optic Sensing
Branko Glisic
Branko Glisic
SMARTEC SA
, Via Pobiette 11, Manno, Ticino 6900, Switzerland
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Daniele Inaudi
Branko Glisic
SMARTEC SA
, Via Pobiette 11, Manno, Ticino 6900, SwitzerlandJ. Pressure Vessel Technol. Feb 2010, 132(1): 011701 (9 pages)
Published Online: December 9, 2009
Article history
Received:
January 31, 2007
Revised:
September 26, 2008
Online:
December 9, 2009
Published:
December 9, 2009
Citation
Inaudi, D., and Glisic, B. (December 9, 2009). "Long-Range Pipeline Monitoring by Distributed Fiber Optic Sensing." ASME. J. Pressure Vessel Technol. February 2010; 132(1): 011701. https://doi.org/10.1115/1.3062942
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