Article (Scientific journals)
4D electrical resistivity tomography (ERT) for aquifer thermal energy storage monitoring
Lesparre, Nolwenn; Robert, Tanguy; Nguyen, Frédéric et al.
2019In Geothermics, 77, p. 368-382
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Keywords :
Aquifer thermal energy storage; ATES; Thermal affected zone; TAZ; Monitoring; Time-lapse; Electrical resistivity tomography; ERT; Inversion; 3D; 4D
Abstract :
[en] In the context of aquifer thermal energy storage, we conducted a hydrogeophysical experiment emulating the functioning of a groundwater heat pump for heat storage into an aquifer. This experiment allowed the assessment of surface electrical resistivity tomography (ERT) ability to monitor the 3D development over time of the aquifer thermally affected zone. The resistivity images were converted into temperature. The images reliability was evaluated using synthetic tests and the temperature estimates were compared to direct temperature measurements. Results showed the capacity of surface ERT to characterize the thermal plume and to reveal the spatial variability of the aquifer hydraulic properties, not captured from borehole measurements. A simulation of the experiment was also performed using a groundwater flow and heat transport model calibrated with a larger set-up. Comparisons of the simulation with measurements highlighted the presence of smaller heterogeneities that strongly influenced the groundwater flow and heat transport.
Disciplines :
Geological, petroleum & mining engineering
Author, co-author :
Lesparre, Nolwenn;  Université de Strasbourg > École et observatoire des sciences de la Terre
Robert, Tanguy ;  Université de Liège - ULiège > Département ArGEnCo > Hydrogéologie & Géologie de l'environnement
Nguyen, Frédéric ;  Université de Liège - ULiège > Département ArGEnCo > Géophysique appliquée
Boyle, Alistair;  University of Ottawa > School of Electrical Engineering and Computer Science
Hermans, Thomas ;  Universiteit Gent - UGent > Department of Geology
Language :
English
Title :
4D electrical resistivity tomography (ERT) for aquifer thermal energy storage monitoring
Publication date :
January 2019
Journal title :
Geothermics
ISSN :
0375-6505
Publisher :
Elsevier, United Kingdom
Volume :
77
Pages :
368-382
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
SUITE4D & ATHENA
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
BEWARE Academia 1510466
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since 25 January 2019

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