问答题 翻译：Viscosity μ is the measure of fluids internal resistance to flow. It has a dimension of force time Ft per unit area L.

问答题 翻译：In the laboratory measurement of porosity, it is necessary to determine only two of the three basic paramenters.

问答题 翻译：The permeability of a porous medium may be determined from samples extracted from the formation or by in-place testing.