Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006geoji.166.1440b&link_type=abstract
Geophysical Journal International, Volume 166, Issue 11, pp. 1440-1453.
Astronomy and Astrophysics
Astronomy
Fracture Geometry, Fractured Sandstone, Gas Permeability, Hydraulic Conductivity, Liquid Permeability
Scientific paper
Hydraulic conductivities of fractured sandstone bore cores of 0.1 m in diameter are calculated using detailed characterization of the fracture geometry parameters determined using a resin casting technique. The accuracy of the measurements was about 0.25-1.25 μm with the image size used. The values of the effective fracture apertures vary between 10 μm and 50 μm. For modelling purposes the samples are sectioned serially, perpendicular to the flow direction along the cylinder axis. The hydraulic conductivity of individual slices is estimated by summing the contribution of the matrix (assumed uniform) and each fracture (depending on its length and aperture). Finally, the hydraulic conductivity of the bulk sample is estimated by a harmonic average in series along the flow path. Results of this geometrical upscaling compare favourably with actual conductivity measured in hydraulic and pneumatic experiments carried out prior to sectioning. This study shows that the determination of larger-scale conductivity can be achieved, based on the evaluation of fracture geometry parameters (e.g. fracture aperture, fracture width and fracture length), measured using an optical method, at least at the laboratory scale.
Baraka-Lokmane Salima
Liedl Rudolf
No associations
LandOfFree
From Micro to Meso: an exercise in determining hydraulic conductivity of fractured sandstone cores from detailed characterization of the fractures does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with From Micro to Meso: an exercise in determining hydraulic conductivity of fractured sandstone cores from detailed characterization of the fractures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and From Micro to Meso: an exercise in determining hydraulic conductivity of fractured sandstone cores from detailed characterization of the fractures will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1078731