# Defining the data in multiple tables¶

There are six basic types of data that can be input in a CHARACTERISTIC_CURVES block, and each has a keyword which is followed by the name of the table block from which the data is to be taken.

The following example shows the use of keywords like KRW_TABLE to identify which TABLE block is to be used.

CHARACTERISTIC_CURVES ch1

KRW_TABLE swfn_table
KRG_TABLE sgfn_table
KRO ECLIPSE
KRO_TABLE sof3_table
END

TABLE swfn_table
PRESSURE_UNITS Bar
EXTERNAL_FILE swfn_file.dat
END

TABLE sgfn_table
PRESSURE_UNITS Pa
EXTERNAL_FILE sgfn_file.dat
END

TABLE sof3_table
EXTERNAL_FILE sof3_file.dat
END

/


The following keywords can be used within the CHARACTERISTIC_CURVES block to specify which table a saturation curve must be taken from:

## PC_OW_TABLE¶

Selects the table block to be used for the capillary pressure curve between oil and water, $$P_{cow} =P_o -P_w$$.

PC_OW_TABLE <water_sat_property_table_name>


## PC_OG_TABLE¶

Selects the table block to be used for the capillary pressure curve between oil and gas, $$P_{cog} =P_g -P_o$$.

PC_OG_TABLE <gas_sat_property_table_name>


## KRW_TABLE¶

Selects the table block to be used for the water relative permeability curve, $$K_{rw}(S_w)$$.

KRW_TABLE <water_sat_property_table_name>


## KRG_TABLE¶

Selects the table block to be used for the gas relative permeability curve, $$K_{rg}(S_g)$$.:

KRG_TABLE <gas_sat_property_table_name>


## KROW_TABLE¶

Selects the table block to be used for the oil in water relative permeability curve at zero gas saturation, $$K_{row}(S_w,S_o=1-S_w,S_g=0)$$.

KROW_TABLE <oil_in_wat_rel_perm_table_name>


## KROG_TABLE¶

Selects the table to be used for the oil in gas relative permeability curve at connate water saturation, $$K_{row}(S_g,S_o=1-S_g-S_{wco},S_w=S_{wco})$$.

KROG_TABLE <oil_in_gas_rel_perm_table_name>


For Todd-Longstaff mode runs, KRH_TABLE should be used rather than KROW_TABLE, as it applies to the hydrocarbon saturation $$(S_h =S_o +S_s )$$ rather than just the oil saturation.