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Active‐distributed temperature sensing to continuously quantify vertical flow in boreholes


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Created: Mar 31, 2018 at 11:50 p.m.
Last updated: Apr 09, 2018 at 7:14 p.m.
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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.

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How to Cite

Read, T. (2018). Active‐distributed temperature sensing to continuously quantify vertical flow in boreholes, HydroShare, http://www.hydroshare.org/resource/9469092120f34214847ff3313defa16c

This resource is shared under the Creative Commons Attribution CC BY.

http://creativecommons.org/licenses/by/4.0/
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