Difference between revisions of "Relative Permeability"
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==Example== | ==Example== | ||
Determine the [[Relative Permeability]] using the following data<ref name=DW/>:<BR> | Determine the [[Relative Permeability]] using the following data<ref name=DW/>:<BR> | ||
− | Core dimensions: A=2 cm2, L=3 cm. PVT: water viscosity = 1 cP, oil viscosity = 3 cP, Bw=1 | + | Core dimensions: A=2 cm2, L=3 cm. PVT: water viscosity = 1 cP, oil viscosity = 3 cP, Bw=1 cm3/cm3, Bo=1.2 cm3/cm3. |
Core is at 100% water and qw=0.553 cc/sec | Core is at 100% water and qw=0.553 cc/sec |
Revision as of 16:39, 30 March 2022
Brief
Relative Permeability is the ratio of the effective permeability to base oil permeability measured at connate water saturation[1].
where
- Oil relative permeability, fraction
- Water relative permeability, fraction
- Effective water permeability, mD
- Effective water permeability, mD
- Effective oil permeability at irreducible oil saturation, mD
- Connate water saturation, fraction
Related definitions
Effective permeability - oil, water, gas phase permeability when more than one phase is present. Depends on fluids saturations.
Absolute permeability - permeability of the core sample when saturated with one liquid. Independent of fluid. Dependent on pore throat sizes.
Example
Determine the Relative Permeability using the following data[1]:
Core dimensions: A=2 cm2, L=3 cm. PVT: water viscosity = 1 cP, oil viscosity = 3 cP, Bw=1 cm3/cm3, Bo=1.2 cm3/cm3.
Core is at 100% water and qw=0.553 cc/sec
Using the Darcy's law:
In this case the mobility of water is 15 times higher than the mobility of water.
See Also
References
- ↑ 1.0 1.1 Wolcott, Don (2009). Applied Waterflood Field Development. Houston: Energy Tribune Publishing Inc.