SelkerJohnBioEcoEngineeringActive-DistributedTemperature_AuxiliaryMaterial.zip

Citeable URL: https://ir.library.oregonstate.edu/concern/articles/1g05fh20h

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Creator	Read, T. Bour, O. Selker, J. S. Bense, V. F. Le Borgne, T. Hochreutener, R. Lavenant, N.
Abstract	We show how a distributed borehole flowmeter can be created from armored Fiber Optic cables with the Active-Distributed Temperature Sensing (A-DTS) method. The principle is that in a flowing fluid, the difference in temperature between a heated and unheated cable is a function of the fluid velocity. We outline the physical basis of the methodology and report on the deployment of a prototype A-DTS flowmeter in a fractured rock aquifer. With this design, an increase in flow velocity from 0.01 to 0.3 m s⁻¹ elicited a 2.5°C cooling effect. It is envisaged that with further development this method will have applications where point measurements of borehole vertical flow do not fully capture combined spatiotemporal dynamics. Keywords: Flowmeter, Fiber optics, Heated, A-DTS, Borehole Keywords: Flowmeter, Fiber optics, Heated, A-DTS, Borehole
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2017-10-27

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