GEOLOGY

Detailed explanation-1: -Permeability is the capacity of a rock layer to transmit water or other fluids, such as oil. The standard unit for permeability is the Darcy (d) or, more commonly, the millidarcy (md).

Detailed explanation-2: -Permeability is a measure of the ease of flow of a fluid through a porous solid.

Detailed explanation-3: -There are 3 types of permeability: effective, absolute, and relative permeabilities. Effective permeability is the ability of fluids to pass through pores of rocks or membranes in the presence of other fluids in the medium.

Detailed explanation-4: -Darcy’s law governs flow of oil, water, and gas in porous media. Darcy’s law says that the flow rate at any point in the reservoir is given by the fluid pressure gradient, the viscosity of the fluid, and its effective fluid permeability.