Reference : Using Electrical Resistivity Tomography and Self-potential Methods for Wells Implementat...
Scientific congresses and symposiums : Paper published in a book
Engineering, computing & technology : Geological, petroleum & mining engineering
http://hdl.handle.net/2268/32827
Using Electrical Resistivity Tomography and Self-potential Methods for Wells Implementations in Fractured Limestones
English
[fr] Utilisation des méthodes de Tomographie de Résistivité Electrique et de Potentiel Spontané pour l'implémentation de piézomètres de contrôle dans des calcaires fracturés
Robert, Tanguy [Université de Liège - ULg > Département Argenco : Secteur GEO3 > Géophysique appliquée >]
Dassargues, Alain mailto [Université de Liège - ULg > Département Argenco : Secteur GEO3 > Hydrogéologie & Géologie de l'environnement >]
Brouyère, Serge mailto [Université de Liège - ULg > Département Argenco : Secteur GEO3 > Hydrogéologie & Géologie de l'environnement >]
Kaufmann, Olivier mailto [Université de Mons-Hainaut - UMH > Géologie Fondamentale et Appliquée > Géophysique Appliquée > >]
Hallet, Vincent mailto [Facultés Universitaires Notre-Dame de la Paix - Namur - FUNDP > Géologie > > >]
Nguyen, Frédéric mailto [Université de Liège - ULg > Département Argenco : Secteur GEO3 > Géophysique appliquée >]
9-Sep-2009
EarthDoc - Near Surface 2009 – 15th European Meeting of Environmental and Engineering Geophysics
Yes
No
International
Near Surface 2009 – 15th European Meeting of Environmental and Engineering Geophysics
du 07 septembre 2009 au 09 septembre 2009
EAGE - European Association of Geoscientists & Engineers
Dublin
Irlande
[en] Geophysics ; Hydrogeology ; Fractures
[en] Electrical resistivity tomography (ERT) and self-potential (SP) investigations were conducted in fractured limestones in Belgium. The aim of this study was to find suitable positions for high yield water wells. Large ERT profiles (640 meters) allowed us to image the resistivity distribution of the first 60 meters of the subsurface and to detect and characterize (in terms of direction, width and depth) fractured zones expected to be less resistive. Data errors, DOI indexes and sensitivity models were analysed in order to calculate the depth of investigation of ERT and to avoid the misinterpretation of the resulting images. Self-potential measurements were performed along electrical profiles to narrow the possible locations given by the electrical images. Some negative anomalies possibly related to preferential flow were detected. ‘Ground truth’ geological data as well as pumping tests information gave us a way to assess the contribution of geophysics to a drilling programme. Wells implemented in low resistivity zones associated with SP anomalies have very high yields. Inversely, wells drilled in resistive zones or outside SP anomalies have poorer capacities. An apparent coupling coefficient between SP signals and differences in hydraulic heads was also estimated in order to image the water table.
Fonds pour la formation à la Recherche dans l'Industrie et dans l'Agriculture (Communauté française de Belgique) - FRIA
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/32827
EarthDoc is an online publication of EAGE

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Restricted access
Robert et al. 2009_Proceedings_Near_Surface_2009_A32.pdfPublisher postprint1.27 MBRequest copy

Additional material(s):

File Commentary Size Access
Restricted access
Dublin2009_Tanguy_Robert.pdf1.62 MBRequest copy

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.