[en] Hydraulic tension fractures were produced in porous limestones using a specially designed hydraulic cell. The 3D geometry of the samples was imaged using X-ray computed microtomography before and after fracturation. Using these data, it was possible to estimate the permeability tensor of the core samples, extract the path of the rupture and compare it to the heterogeneities initially present in the rock. [fr] Des échantillons de calcaires poreux ont été fracturés dans une cellule hydraulique
spécialement construite à cet effet. La géométrie 3D des échantillons a été mesurée par
microtomographie synchrotron avant et après fracturation. Les données obtenues ont permis
de 1) calculer le tenseur de perméabilité; 2) caractériser la rugosité des fractures produites
en fonction de la distribution des hétérogénéités initialement présentes dans la roche.
Disciplines :
Physics
Author, co-author :
Renard, François; Université Joseph Fourier - Grenoble 1 - UJF
Bernard, Dominique; Institut de Chimie de la Matière Condensée de Bordeaux
Desrues, Jacques; Institut polytechnique de Grenoble
Plougonven, Erwan ; Université de Liège - ULiège > Department of Chemical Engineering > PEPs (Product, Environment, Processes)
Ougier-Simonin, Audrey; Université Joseph Fourier - Grenoble 1 - UJF
Language :
English
Title :
Characterisation of hydraulic fractures in limestones using X-ray microtomography
Publication date :
October 2006
Event name :
2nd International Workshop on the Application of X-ray CT for Geomaterials
Bernard, D., Nielsen, O., Salvo, L., Cloetens, P., Permeability assessment by 3D interdentritic flow simulations on microtomography mappings of Al-Cu alloys (2005) Materials Science and Engineering A, 192, pp. 112-120
Bunger, A.P., Detournay, E., Asymptotic solution for a penny-shaped near-surface hydraulic fracture (2005) Engineering Fracture Mechanics, 72, pp. 2468-2486
Fredrich, J.T., DiGiovanni, A.A., Noble, D.R., Predicting macroscopic transport properties using microscopic image data (2006) Journal of Geophysical Research, 111, p. 3201. , doi:101029/2005JB003774
Garagash, D.I., Plane-strain propagation in a fluid-driven fracture during injection and shut-in: Asymptotics of large toughness (2006) Engineering Fracture Mechanics, 73, pp. 456-481
Lockner, D., Byerlee, J.D., Hydrofracture in Weber sandstone at high confining pressure and differential stress (1977) Journal of Geophysical Research, 82, pp. 2018-2026
Talebi, S., Cornet, F.H., Analysis of the microseismicity induced by a fluid injection in a granitic rock mass (1987) Geophysical Research Letters, 14, pp. 227-230
Tzschichholz, F., Herrmann, H.J., Simulations of pressure fluctuations and acoustic emission in hydraulic fracturing (1995) Physical Review E, 51, pp. 1961-1970
Whitaker, S., The Forchheimer equation: A theoretical development (1996) Transport in Porous Media, 25, pp. 27-61
Zhang, X., Jeffrey, R.G., Detournay, E., Propagation of a hydraulic fracture parallel to a free surface (2005) International Journal for Numerical and Analytical Methods in Geomechanics, 29, pp. 1317-1340
