Grain and pore microtexture in sandstone sill and depositional sandstone reservoirs: preliminary insights
作者： Feng Wu , Andrew Hurst , Antonio Grippa
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摘要: Petrographical microtextural analysis and conventional core-plug of samples from a depositional sandstone sill are used to compare with similar data derived micro-CT (MCT) the same samples. A remarkable richness information MCT identifies isotropic granular pore fabrics at micrometre-scale in that contrast markedly laminated fabric sandstone. In sill, porosity permeability more homogenous than sandstone, which lamination creates approaching two-orders magnitude difference enhances horizontal relative vertical permeability. lower pore- throat-shape factors larger coordinate numbers present Preservation grain structure is indicative significant fluidized flow normal fracture margin during emplacement.
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