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Relative permeability (view source)
Revision as of 20:22, 4 September 2014
, 20:22, 4 September 2014→Critical water saturation
==Critical water saturation==
==Critical water saturation==
The critical S<sub>w</sub> value is different for each port type. Curve A in Figure 9-28 represents rocks with macroporosity. It has a critical S<sub>w</sub> less than 20%. Curve B represents a rock (continued) with mesoporosity. Mesoporous rocks have a critical S<sub>w</sub> of 20–60%. Curve C represents rocks with microporosity. They have a critical S<sub>w</sub> of 60–80%.
The critical S<sub>w</sub> value is different for each port type. Curve A in Figure 9-28 represents rocks with macroporosity. It has a critical S<sub>w</sub> less than 20%. Curve B represents a rock (continued) with [[Wikipedia:Mesoporous material|mesoporosity]]. Mesoporous rocks have a critical S<sub>w</sub> of 20–60%. Curve C represents rocks with microporosity. They have a critical S<sub>w</sub> of 60–80%.
The table below summarizes representative critical S<sub>w</sub> values for macro-, meso-, and micropore types that correspond to A, B, and C, respectively, in [[:file:predicting-reservoir-system-quality-and-performance_fig9-28.png|Figure 3]].
The table below summarizes representative critical S<sub>w</sub> values for macro-, meso-, and micropore types that correspond to A, B, and C, respectively, in [[:file:predicting-reservoir-system-quality-and-performance_fig9-28.png|Figure 3]].