Oil-Water Model Characteristic curves

The oil water flow model (TOIL) requires the capillary pressure between the oil and water, and relative permeability for the water and the oil in water.

Oil-Water saturation properties defined by tables - example

In the example below the tables needed to define \(P_{cow}\), \(K_{rw}\), and \(K_{row}\) have been specified. Each of the saturation property is defined unambiguously, so the keywords PC_OW_TABLE, KRW_TABLE, and KROW_TABLE are not needed.

CHARACTERISTIC_CURVES toil_sat_prop_table_example
  TABLE swfn_table
    PRESSURE_UNITS Pa
    EXTERNAL_FILE swfn_file.dat !contain SWFN
  END
  TABLE sof2_table
    EXTERNAL_FILE sof2_table.dat !contain SOF2
  END
/

Oil-Water saturation properties by analytical functions - example

CHARACTERISTIC_CURVES toil_sat_prop_func_example
  CAP_PRESSURE_FUNCTION_OW BROOKS_COREY
    WATER_CONNATE_SATURATION 0.0
    WATER_RESIDUAL_SATURATION 0.45
    LAMBDA 0.4d0
    ALPHA 0.5e-03
    MAX_CAPILLARY_PRESSURE 5.d5
  /
  PERMEABILITY_FUNCTION_WAT BURDINE_VG
    M 3.0
    WATER_CONNATE_SATURATION 0.0
    WATER_RESIDUAL_SATURATION 0.45
  END
  PERMEABILITY_FUNCTION_OW MOD_BROOKS_COREY
    M 1.0d0
    OIL_RESIDUAL_SATURATION 0.3d0
    MAX_REL_PERM 0.28d0 !if not included defaults to 1
    SMOOTH
  END
/