Porosity network and transfer properties of geothermal formation : Importance of damage zones around faults and fractures Géraud Yves, Rosener Michel, Place Joachim Institut de Physique du Globe de Strasbourg Equipe de Physique des matériaux UMR 7516, Université Louis Pasteur-CNRS
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Porosity network and transfer properties of geothermal formation : Importance of damage zones around faults and fractures Géraud Yves, Rosener Michel,
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Porosity network and transfer properties of geothermal formation :Importance of damage zones around faults and fractures
Géraud Yves, Rosener Michel, Place Joachim
Institut de Physique du Globe de Strasbourg Equipe de Physique des matériauxUMR 7516, Université Louis Pasteur-CNRS
Strain and rheology of fracture and fault zones
Petrophysical data
GeologyPetrographyMineralogystructure
PorosityPermeabilityThermal conductivity
Strain StressTemperature time
Intrinsic properties
Rheologic modelTHM Code_bright
PYGARKI Fault
Hanging wall
Gouge or cataclasites
Transport through Soultz/forêts granite
Mass fluxes Fluid fluxes Thermal fluxes
CalciteQuartz
Illite
-40
-30
-20
-10
0
10
20
30
40
50
60
0.25 0.5 0.75 1 1.25 1.5 1.75Facteur de volume
Gains et pertes (en g/ 100 g de biotite)
SiO2 Al2O3 FeO MnO TiO2 MgO K2O Na2O CaO CO2 H2O
isochimique
isovolumique
From mineralogical and geochemical analysis
Physico-chemical model of transport
Rh : 10-12 m
Rh : 10-14 m
K109
2.56 W/mK
1,8
2
2,2
2,4
2,6
2,8
3
From the sample to the mineral scale
Thermalconductivity by optical scanning
X-ray tomodensitometry
Transport through Soultz/forêts granite
Experimental and numerical model of the fluid-rock interaction around a fracture
Fracture
Granit with damage zone
Fluid flow
Mass flux measurementThermal flux measurment
Experimental tests under X-ray tomodensitometryNumerical tests under kindis, Kirmat and Code bright models
L ’ oligo-miocen to actual extension W Europe, France- Spain