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Mathematical models of relative permeability are called RPM.
The usual practice is to build build 2-phase RPM based on SCAL data and then use 3-phase correlations (see table below).
In case the 2-phase SCAL data is insufficient or highly scattered one can use 2-phase ROM correlations (see table below), calibrated to whatever SCAL and production data available.
| 2-phase RPM correlations | 3-phase RPM correlations |
|---|---|
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