Difference between revisions of "Relative Permeability"
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==Example== | ==Example== | ||
− | Determine the [[ | + | Determine the [[Relative Permeability]] using the following data<ref name=DW/>:<BR> |
− | Core | + | Core dimensions: A=2 cm2, L=3 cm. PVT: water viscosity = 1 cP, oil viscosity = 3 cP, Bw=1 m3/m3, Bo=1.2m3/m3. |
+ | |||
+ | Core is at 100% water and qw=0.553 cc/sec | ||
− | :<math> | + | Using the [[Darcy's Law]]: |
+ | |||
+ | :<math> k_{abs} = \frac{0.553*1*1*3}{2*2} = 0.415 D = 415 mD </math> | ||
In this case the mobility of water is 15 times higher than the mobility of water. | In this case the mobility of water is 15 times higher than the mobility of water. |
Revision as of 16:38, 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 m3/m3, Bo=1.2m3/m3.
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.