`EQUALS`

Recognised by the OPM Flow parserGRIDEDITPROPSREGIONSSOLUTION

Variant 1 — GRID section

The EQUALS keyword sets a specified array or part of an array to a constant. The constant can be an integer or real value depending on the array type; however, the arrays that can be operated on are dependent on which section the EQUALS keyword is being applied in.

Notes:

Where NX, NY and NZ are the dimensions of the model as defined on the DIMENS keyword in the RUNSPEC section.

Each record must be terminated by a “/” and the keyword is terminated by a “/”.

Examples of the arrays most commonly operated on in each section are given in Table 6.36. Cells colored red indicate arrays that are not supported by OPM Flow operations.

EQUALS Keyword and Variable Options by Section

DEPTH

SWL

ENDNUM

PRESSURE

PORV

SWCR

EQLNUM

SWAT

TRANX

SWU

FIPNUM

SGAS

PERMX

TRANY

SGL

IMBNUM

PERMY

TRANZ

SGCR

MISCNUM

PERMZ

DIFFX

SGU

PVTNUM

TBLK

MULTX

DIFFY

KRW

ROCKNUM

MULTY

DIFFZ

KRO

SATNUM

OILAPI

MULTZ

TRANR

KRG

WH2NUM

SALT

TRANTHT

PCG

GASCONC

DTHETA

DIFFR

PCW

SOLVCONC

PERMR

DIFFTHT

SOLVFRAC

PERMTHT

SFOAM

DZNET

SPOLY

PORO

NTG

FLUXNUM

MULTNUM

MPFANUM

DIFFX

DIFFY

DIFFZ

DIFFR

DIFFTHT

Table 6.36: EQUALS Keyword Applicable Arrays by Section

Note

Unlike the commercial simulator, using the EQUALS keyword to setup the structure of the grid using the DX, DY, DZ and TOPS keywords should be avoided as it may cause OPM Flow to prematurely fail during the initialization.

See the second example on the correct way to setup this type of grid.

Records: One or more records, each terminated by /
Items per record: 8

Parameters

No.	Name	Description	Type	Default
1	`field` manual: `ARRAY`	A character string of up to eight characters in length that defines the keyword identifying the property to be modified.	STRING	None
2	`value` manual: `CONSTANT`	An integer or real value that the ARRAY will be set to in the same units as the ARRAY property.	DOUBLE	None
3	`I1`	A positive integer that defines the lower bound of the array in the I-direction to be modified must be greater than or equal to one and less than or equal to I2 and NX.	INT	1
4	`I2`	A positive integer that defines the upper bound of the array in the I-direction to be modified must be greater than or equal to II and less than or equal to NX	INT	NX
5	`J1`	A positive integer that defines the lower bound of the array in the J-direction to be modified must be greater than or equal to one and less than or equal to J2 and NY.	INT	1
6	`J2`	A positive integer that defines the upper bound of the array in the J-direction to be modified must be greater than or equal to JI and less than or equal to NY.	INT	NY
7	`K1`	A positive integer that defines the lower bound of the array in the K-direction to be modified must be greater than or equal to one and less than or equal to K2 and NZ.	INT	1
8	`K2`	A positive integer that defines the upper bound of the array in the K-direction to be modified must be greater than or equal to KI and less than or equal to NZ.	INT	NZ

Example

The first example resets the PERMX, PERMY and PERMZ, arrays to 0.10, 0.10, and 0.01 for all cells in layer five, respectively.
--
-- ARRAY CONSTANT ---------- BOX ---------
- I1 I2 J1 J2 K1 K2
EQUALS
PERMX 0.1000 1* 1* 1* 1* 5 5 / PERMX TO 0.10 IN LAYER 5
PERMY 0.1000 1* 1* 1* 1* 5 5 / PERMY TO 0.10 IN LAYER 5
PERMZ 0.0100 1* 1* 1* 1* 5 5 / PERMZ TO 0.01 IN LAYER 5
/
The second example illustrates how to correctly setup a Cartesian Regular Grid in OPM Flow, given the DIMENS keyword in the RUNSPEC section is set to:
--
-- MAX MAX MAX
-- NDIVIX NDIVIY NDIVIZ
DIMENS
10 10 3 /
and the following keywords in the GRID section:
--
-- ACTIVATE IRREGULAR CORNER-POINT GRID TRANSMISSIBILITIES
--
OLDTRAN
--
-- DEFINE GRID BLOCK X DIRECTION CELL SIZE (BASED ON NX = 5)
--
DX
300*1000 /
--
-- DEFINE GRID BLOCK Y DIRECTION CELL SIZE (BASED ON NY = 5)
--
DY
300*1000 /
--
-- DEFINE GRID BLOCK SIZES IN THE Z DIRECTION
--
DZ
100*20 100*30 100*50 /
--
-- DEFINE GRID BLOCK TOPS FOR THE TOP LAYER
--
TOPS
100*8325 /
--
-- ARRAY CONSTANT ---------- BOX ---------
-- I1 I2 J1 J2 K1 K2
EQUALS
PERMX 500.000 1* 1* 1* 1* 1 1 / Layer #01 Properties
PERMY 500.000 /
PERMZ 20.000 /
PORO 0.300 /
NTG 1.000 /
PERMX 50.000 1* 1* 1* 1* 2 2 / Layer #02 Properties
PERMY 50.000 /
PERMZ 50.000 /
PORO 0.300 /
NTG 1.000 /
PERMX 200.000 1* 1* 1* 1* 3 3 / Layer #03 Properties
PERMY 200.000 /
PERMZ 200.000 /
PORO 0.300 /
NTG 1.000 /
/
Notice that the DX, DY, DZ and TOPS keywords are defined separately, that is they are not included in the EQUALS keyword.
| EQUALS Keyword and Variable Options by Section |         |       |         |          |         |          |
|------------------------------------------------|---------|-------|---------|----------|---------|----------|
| GRID                                           | EDIT    | PROPS | REGIONS | SOLUTION | SUMMARY | SCHEDULE |
| DX                                             | DEPTH   | SWL   | ENDNUM  | PRESSURE |         |          |
| DY                                             | PORV    | SWCR  | EQLNUM  | SWAT     |         |          |
| DZ                                             | TRANX   | SWU   | FIPNUM  | SGAS     |         |          |
| PERMX                                          | TRANY   | SGL   | IMBNUM  | RV       |         |          |
| PERMY                                          | TRANZ   | SGCR  | MISCNUM | RS       |         |          |
| PERMZ                                          | DIFFX   | SGU   | PVTNUM  | TBLK     |         |          |
| MULTX                                          | DIFFY   | KRW   | ROCKNUM | GI       |         |          |
| MULTY                                          | DIFFZ   | KRO   | SATNUM  | OILAPI   |         |          |
| MULTZ                                          | TRANR   | KRG   | WH2NUM  | SALT     |         |          |
| DR                                             | TRANTHT | PCG   |         | GASCONC  |         |          |
| DTHETA                                         | DIFFR   | PCW   |         | SOLVCONC |         |          |
| PERMR                                          | DIFFTHT |       |         | SOLVFRAC |         |          |
| PERMTHT                                        |         |       |         | SFOAM    |         |          |
| DZNET                                          |         |       |         | SPOLY    |         |          |
| PORO                                           |         |       |         |          |         |          |
| NTG                                            |         |       |         |          |         |          |
| FLUXNUM                                        |         |       |         |          |         |          |
| MULTNUM                                        |         |       |         |          |         |          |
| MPFANUM                                        |         |       |         |          |         |          |
| DIFFX                                          |         |       |         |          |         |          |
| DIFFY                                          |         |       |         |          |         |          |
| DIFFZ                                          |         |       |         |          |         |          |
| DIFFR                                          |         |       |         |          |         |          |
| DIFFTHT                                        |         |       |         |          |         |          |
| Note Unlike the commercial simulator, using the EQUALS keyword to setup the structure of the grid using the DX, DY, DZ and TOPS keywords should be avoided as it may cause OPM Flow to prematurely fail during the initialization. See the second example on the correct way to setup this type of grid. |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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

Variant 2 — EDIT section

The EQUALS keyword sets a specified array or part of an array to a constant. The constant can be real or integer depending on the array type; however, the arrays that can be operated on is dependent on which section the EQUALS keyword is being used.

See EQUALS – Sets a Specified Array to a Constantin the GRID section for a full description.

Records: One or more records, each terminated by /
Items per record: 8

Manual source: parts/chapters/subsections/7.3/EQUALS.fodt

Variant 3 — PROPS section

See EQUALS – Sets a Specified Array to a Constantin the GRID section for a full description.

Records: One or more records, each terminated by /
Items per record: 8

Manual source: parts/chapters/subsections/8.3/EQUALS.fodt

Variant 4 — REGIONS section

See EQUALS – Sets a Specified Array to a Constantin the GRID section for a full description.

Records: One or more records, each terminated by /
Items per record: 8

Manual source: parts/chapters/subsections/9.3/EQUALS.fodt

Variant 5 — SOLUTION section

See EQUALS – Sets a Specified Array to a Constantin the GRID section for a full description.

Records: One or more records, each terminated by /
Items per record: 8

Manual source: parts/chapters/subsections/10.3/EQUALS.fodt