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

Read, T., Bour, O., Selker, J. S., Bense, V. F., Le Borgne, T., Hochreutener, R. and Lavenant, N. (2014) Active-distributed temperature sensing to continuously quantify vertical flow in boreholes. Water Resources Research, 50 (5). 3706–3713. ISSN 0043-1397

[thumbnail of Read_2014]
Preview
PDF (Read_2014) - Published Version
Download (596kB) | Preview

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.

Item Type: Article
Uncontrolled Keywords: a-dts,borehole,flowmeter,heated,fiber optics
Faculty \ School: Faculty of Science
Faculty of Science > School of Environmental Sciences
UEA Research Groups: Faculty of Science > Research Groups > Geosciences
Faculty of Social Sciences > Research Centres > Water Security Research Centre
Faculty of Science > Research Groups > Geosciences and Natural Hazards (former - to 2017)
Depositing User: Pure Connector
Date Deposited: 30 May 2014 20:34
Last Modified: 24 Oct 2022 06:17
URI: https://ueaeprints.uea.ac.uk/id/eprint/48457
DOI: 10.1002/2014WR015273

Actions (login required)

View Item View Item