MINPV

Recognised by the OPM Flow parserGRID

MINPV defines a minimum threshold pore volume that makes all grid blocks whose pore volume is below this value inactive in the model (inactive cells are not used in OPM Flow calculations). Note this keyword is different to the MINPVV keyword in the GRID section, that sets a minimum threshold pore volume for individual cells in the model.

Note that the MINPORV keyword is an alias for the MINPV keyword in the GRID section, and thus provides the same functionality.

Notes:

The keyword is terminated by a “/”.

The MINPV, MINPORV, and MINPVV keywords only apply their minimum threshold pore volume values to active cells. Thus, cells that have been made inactive via setting their ACTNUM values to zero, remain inactive, even if their pore volume exceeds the values set by the MINPV, MINPORV, and MINPVV keywords.

Secondly, although the MINPV keyword allows one to set a minimum threshold pore volume below the default value, this is not recommended, as cells with small pore volumes can cause significant numerical convergence errors. Thus, in practice, values greater than the default values are normally applied to eliminate cells that have relatively small pore volumes. In addition, the simulator reports the total pore volume and the number of cells made inactive, as well as the pore volume reduction, when the keyword is invoked; allowing one to run some sensitivities to the minimum pore volume value.

See also the PINCH keyword for the treatment of inactive grid cells and pinch-outs.

Records

Fixed number of records

Record count

1

Items per record

1

Parameters

Example

--
-- MINIMUM PORE VOLUME FOR ACTIVE CELLS
--
MINPV
500.0 /
The above example defines 500 rb (or m3) as the minimum pore volume for a cell to be active in the model.

Related keywords

Cannot be combined with

MINPORV

Manual source: parts/chapters/subsections/6.3/MINPV.fodt