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Purpose of the REGIONS Section

The REGIONS section divides the reservoir according to

– Variations in reservoir characteristics

– For reporting purposes

Examples:

– Different PVT properties and equilibration characteristics couldbe assigned to areas of the grid separated by a sealing fault

– Fluid in place could be reported by fault block or leasehold position

The REGIONS section is optional

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Use: Variations of Reservoir Properties

3D view of EQLNUM property

EQUIL keyword tables now

associated with EQLNUM

regions

Resulting initial oil saturation

EQLNum

SOLUTION

EQUIL 2 TABLES

7100 3814.70 7500 0 7100 0 1 0 5 /

8000 4145.39 7550 0 7000 0 1 0 5 /

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Use: Reporting Purposes

1. FIPNUM (fluid in place regions)

are defined in the REGIONS

section

2. In the Solution section:

RPTSOL

FIP=2 /

3. The PRT file now shows the

fluids in place both originally &

at each report step

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REGIONS Section Keywords

Commonly Used

Special Use

Operators

Exceptions

– (these are in GRID Section)

FIPNUM

SATNUM

PVTNUM

EQLNUM

FIPXXXXX (ex: FIPLAYER, FIPEXPL)

EQUALS, ADD, COPY, etc

FLUXNUM, RESVNUM, NINENUM,

PINCHNUM

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Output Controls

For a report in the PRT file:

– RPTREGS in REGIONS Section

• BOUNDARY can be used to limit this output

– RTPSOL (FIP=1,2 or 3) in SOLUTION Section

– RPTSCHED (FIP=1,2 or 3) in SCHEDULE Section

For 3D viewable output:

– INIT in GRID Section = regions keywords

– RPTRST (FIP) = fluids in place

}same result

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How to specify Regions keyword arrays

REGIONS

EQUALS

'FIPNUM' 1 /

'FIPNUM' 2 11 20 /

/

FIPLAYER

100*1

100*2

100*3

100*4

100*5

100*6

100*7

100*8

100*9

100*10 /

Use the Operator

keywords (EQUALS,

COPY, ADD, etc)

Specify the number for

each cell

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How to specify Regions keyword arrays

Interactively

FloViz

Office

Petrel

FloGrid

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EX 4: Sector Model PROPS &

REGIONS