RT Journal Article
SR Electronic
T1 Fracture analysis in the Amellago outcrop and permeability predictions
JF Petroleum Geoscience
JO Petroleum Geoscience
FD Geological Society of London
SP 93
OP 107
DO 10.1144/petgeo2012-094
VO 20
IS 1
A1 Malinouskaya, Iryna
A1 Thovert, Jean-François
A1 Mourzenko, Valeri V.
A1 Adler, Pierre M.
A1 Shekhar, Ravi
A1 Agar, Susan
A1 Rosero, Enrique
A1 Tsenn, Michael
YR 2014
UL http://pg.lyellcollection.org/content/20/1/93.abstract
AB Field observations from several outcrops in the Eastern High Atlas Mountains, near Amellago (Morocco), are used to determine fracture-network model parameters, such as the aspect ratio of the fractures represented as rectangles whose longer side is horizontal, the volumetric area of fracture surfaces, the fracture mean size and the fracture density. The fracture orientations can be roughly approximated by Fisher distributions, where the parameters are determined by outcrop measurements. The permeability of the fracture networks can be calculated by application of the Snow equation for infinite fractures or by numerical resolution of the flow equation for fracture networks generated with the parameters deduced from the outcrop measurements. These two permeability estimations are shown to be in good agreement, which suggests that theoretical or semi-empirical solutions may provide reasonable approximations of fracture-network permeability in some carbonate reservoirs when conditioned to appropriate outcrop and subsurface data.