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High Quality Content by WIKIPEDIA articles! Permeability in fluid mechanics and the earth sciences (commonly symbolized as ?, or k) is a measure of the ability of a porous material (often, a rock or unconsolidated material) to transmit fluids.The SI unit for permeability is m2. A traditional unit for permeability is the darcy (D), or more commonly the millidarcy (mD) (1 darcy approx10?12m2). The unit of cm2 is also sometimes used.The concept of permeability is of importance in determining the flow characteristics of hydrocarbons in oil and gas reservoirs, and of groundwater in aquifers.

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High Quality Content by WIKIPEDIA articles! Permeability in fluid mechanics and the earth sciences (commonly symbolized as ?, or k) is a measure of the ability of a porous material (often, a rock or unconsolidated material) to transmit fluids.The SI unit for permeability is m2. A traditional unit for permeability is the darcy (D), or more commonly the millidarcy (mD) (1 darcy approx10?12m2). The unit of cm2 is also sometimes used.The concept of permeability is of importance in determining the flow characteristics of hydrocarbons in oil and gas reservoirs, and of groundwater in aquifers.