منابع مشابه
Compaction Localization in Porous Sandstone: Implications for Reservoir Mechanics
Compaction of porous rocks can occur in two modes: uniform and localized. Recent experimental work has demonstrated that compaction can occur in tabular zones that expand with increasing applied deformation. The appearance of compaction bands and their growth has a strong influence on the measured permeability of the host rock. The rock behind the moving compaction front can be either uniformly...
متن کاملCompaction Bands in Porous Rock
Compaction bands are localized, planar zones of compressed material that form perpendicular to the maximum compressive stress. Compaction bands have been observed in porous sandstone formations in the field and in laboratory compression tests on porous sandstone, plaster, glass beads, polycarbonate honeycombs and metal foams. Because the permeability of the compacted material is much reduced, c...
متن کاملTheory of Compaction Bands in Porous Rock
Compaction bands are narrow planar zones of localized purely compressive (without shear) deformation that form perpendicular to the most compressive principal stress. Such bands have been observed in high porosity rocks in the laboratory and in the field. Because compaction presumably decreases permeability, these bands can act as barriers to flow within reservoirs. Reexamination of the results...
متن کاملAsymptotic solutions of compaction in porous media
Compaction in reactive porous media is modelled as a reaction-diffusion process with a moving boundary. Asymptotic analysis is used to find solutions for the coupled nonlinear compaction equations, and a traveling wave solution is obtained above the reaction zone.
متن کاملCosmic Ray Compaction of Porous Interstellar Ices
We studied the compaction of microporous vapor-deposited ice films under irradiation with different ions in the 80Y400 keVenergy range.We found that porosity decreases exponentially with irradiation fluence, with amean compaction area per ion that scales linearlywith the stopping power of the projectile S above a threshold St 1⁄4 4 eV8 . The experiments roughly follow a universal dependence of ...
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ژورنال
عنوان ژورنال: Oil & Gas Science and Technology
سال: 1999
ISSN: 1294-4475
DOI: 10.2516/ogst:1999061