دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a measure of the ability of a single fluid (such as water, gas, or oil) to flow through a rock formation when the formation is totally filled (saturated) with that fluid. The permeability measure of a rock filled with a single fluid is different from the permeability measure of the same rock filled with two or more fluids. Compare effective permeability, relative permeability.

permeability to a single phase fluid in a cleaned core.

a relative permeability effect where condensate, usually hydrocarbon, drops out of the vapor phase around the wellbore when the pressure drops below the dew point in response to drawdown or depletion. Gas rates can be severely reduced by the permeability

n: displacement of hydrocarbons or fluids in a reservoir by increasing the non wetting phase saturation. See nonwetting phase.

n: a measure of the ability of a single fluid to flow through a rock when another fluid is also present in the pore spaces. Compare absolute permeability. relative permeability.

the permeability of the formation matrix to a particular fluid when two or more phases are present.

n: displacement of hydrocarbons or fluids in a reservoir by increasing the wetting phase saturation. See wetting phase.

relative permeability to gas.

relative permeability to oil.

relative permeability to water.

n: 1. a measure of the ease with which a fluid flows through the connecting pore spaces of rock or cement. The unit of measurement is the rnilIidarcy. 2. fluid conductivity of a porous medium. 3. ability of a fluid to flow within the interconnected pore network of a porous medium. See absolute permeability, effective permeability, relative permeability.

n: the units of permeability are darcies or millidarcies.

n: the ratio of effective permeability to absolute permeability. The relative permeability of rock to a single fluid is 1.0 when only that fluid is present. and 0.0 when the presence of another fluid prevents all flow of the given fluid. Compare absolute penneability. effective permeability.

the permeability to a specific fluid based on permeability at 100% saturation of that fluid, when two or more fluids occupy the pore space. The relative permeability may change with changing fluid saturation.