NAME

       upscale_relperm - Upscale two-phase relative permeability

SYNOPSIS

       upscale_relperm [option=value] [grid file] [rock file 1] [rock file 2] [rock file 3] ...

DESCRIPTION

       Upscale  two-phase  relative  permeability  in  the  capillary  limit for lithofacies models described by
       Eclipse corner point grids.

       Example usage:

       upscale_relperm -bc p grid.grdecl swof1.inc swof2.inc

       For isotropic input, the rock file has four columns, and looks like this:

       -- Stone 1 -- Sw           Krw             Kro     J-func
         1.42000E-01  0.00000E+00  1.00000E+00  2.25999E+00
         2.79250E-01  1.93652E-03  5.03619E-01  5.76122E-02
         4.14850E-01  1.09648E-02  2.36036E-01  -1.23421E-02
         6.14150E-01  4.10007E-02  3.95006E-02  -8.96693E-02
         7.26100E-01  1.41398E-01  9.30808E-03  -1.19849E-01
         9.48000E-01  8.40000E-01  0.00000E+00  -1.42553E+00

OPTIONS

       -bc Which boundary conditions to use. Possible values are p (periodic), f (fixed) or l (linear). Defaults
       to f.
       -points Number of saturation points to upscale for, uniformly distributed. Defaults to 30.
       -upscaleBothPhases Whether to upscale both phases or not. Defaults to true.
       -relPermCurve If upscaleBothPhases is false and input is isotropic, this specifies the column  number  in
       the rock-files to be upscaled. Defaults to 2.
       -jFunctionCurve If upscaleBothPhases is false and input is isotropic,the column number in the stone-files
       that represent the Leverett J-function. Defaults to 4.
       -gravity Gravitational acceleration, in m/s². Use 9.8 for standard gravity. Defaults to 0.
       -fluids  Which  two-phase  fluid  system  we  are dealing with. Possible values are ow (oil/water) and go
       (gas/oil). Defaults to ow.
       -surfaceTension Surface tension in dynes/cm to use in J-function/Pc  conversion.  Contact  angle  is  not
       supported, and
       -waterDensity  Density  of  water,  in  g/cm³. Only relevant for non-zero gravity. If fluids is set to go
       (gas/oil), this should be set to density of gas. Defaults to 1.0.
       -oilDensity Density of oil, in g/cm³. Only relevant for non-zero gravity. Defaults to 0.6.
       -output Filename for where to write upscaled values.
       -doEclipseCheck Check that input curves includes critical saturation points, i.e. saturation points where
       relperms are 0. See critRelpermThresh. Defaults to true.
       -critRelpermThresh If minimum relperm value is less than this value, it is set to 0. Only  applicable  if
       doEclipseCheck is true. Defaults to 1e-6.
       -interpolate  If this option is used, the outputted values will be interpolated values using the supplied
       number of points (integer larger than 0). Monotone cubic interpolation is used, and will thus  produce  a
       smooth curve for a few number of saturation points.

REPORTING BUGS

       Report on github repository <https://github.com/OPM/opm-upscaling/issues>

SEE ALSO

       upscale_perm

upscale_relperm 2023.10                           October 2023                                UPSCALE_RELPERM(1)