`PERMTHT`

Recognised by the OPM Flow parserGRID

PERMTHT sets the permeability for each cell in the THETA direction in a radial geometry grid. The RADIAL or SPIDER keyword in the RUNSPEC should be activated to indicate that radial or spider geometry is being used.

Notes:

The number of entries should correspond to the NX x NY x NZ parameters on the DIMENS keyword in the RUNSPEC section, unless the BOX keyword defines a sub area of the grid, in which case the total number of entries should correspond to the number of cells defined by the BOX statement.

The keyword is terminated by a “/”.

Note that the SPIDER keyword activates OPM Flow’s radial grid geometry option for the model. This keyword will create a spiderweb-shaped grid based on a corner-point grid using the standard radial grid keywords: INRAD, DRV, DTHETAV, DZ/DZV etc. in the GRID the section. Spider and Radial grids generated by OPM Flow will be displayed the same in OPM ResInsight, as they are both output as Cartesian Irregular Corner-Point Grids. The difference is that the radial model’s pore volumes are adjusted to match the radial geometry pore volumes, whereas the Spider grid volumes are not adjusted.

See also the PERMR and PERMZ keywords to fully define the permeability for a radial or spider grid model.

Records: An array of values covering the grid

Parameters

No.	Name	Description	Field	Metric	Lab	Default
1	`PERMTHT`	PERMTHT is an array of real positive numbers assigning the permeability in the THETA direction to each cell in the model. This equivalent to PERMY in a Cartesian grid. Repeat counts may be used, for example 20*100.0.	mD	mD	mD	None

Example

--
-- DEFINE GRID BLOCK PERMTHT DATA FOR ALL CELLS (NX x NY x NZ = 300)
--
PERMTHT
100*500.0 100*50.0 100*200.0 /
The above example defines the PERMTHT to be 500.0, 50.0, and 200.0 for the first, second and third layers in the model for all 300 cells, as defined by the DIMENS keyword (10, 10, 3) in the RUNSPEC section.

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