Permeability of oil-gas Reservoir Rock
Permeability of Petroleum Reservoir Rock In addition to being porous, a reservoir rock must be permeable—that is, it must allow fluids to flow through its pore network at practical rates under reasonable pressure differentials. Permeability is defined as: 1. The ability of a formation to transmit fluids 2. The ability of rocks to allow the circulation of fluids contained in their pores. 3. The ability of the rock to allow a fluid with which it is saturated to flow through its pores . Permeability is a measure of the ease with which the fluid flows in the porous medium. Figure 4.1 represents a schematic showing the difference between low and high permeability rocks in a reservoir. The permeability of a rock measured when it is 100% saturated with a singl...