This article follows after the previous two articles on the RUNSPEC and the GRID & EDIT sections of the Volve simulation model.
PROPS
This section contains the pressure and saturation dependent properties of the simulation dataset. This would generally include fluid PVT properties, rock compressibility and saturation values for the grid.
-- Input of TRACER data
TRACER
IW1 WAT /
IW2 WAT /
/
This keyword sets up passive tracers with names IW1 and IW2 that have water as the fluid associated with them.
-- Salinity (mg/l)
-- 151200.0
Defines the salinity used in the modified Peng-Robinson equation of state in Gas – Water cases. This has been commented here.
DENSITY
-- OilDens WaterDens GasDens
-- kg/m3 kg/m3 kg/m3
882.0 1101.3 1.09956 / -- #1 SR19,F-12,F-14
882.0 1101.3 1.09956 / -- #2 SR19,F-12,F-14
885.2 1101.3 1.06048 / -- #3 -19A
885.2 1101.3 1.06048 / -- #4 -19A
885.2 1101.3 1.06048 / -- #5 -19A
...
This keyword defines the oil, water and gas surface densities for the fluids for various regions in the model. The 12 densities represent the 12 regions as specified in the TABDIMS keyword in the RUNSPEC section.
PVTW
-- RefPres Bw Cw Vw dVw
-- bara rm3/m3 1/bara cP 1/bara
268.5 1.03382 0.31289E-04 0.38509 0.97801E-04 / -- #1 SR19,F-12,F-14
268.5 1.03382 0.31289E-04 0.38509 0.97801E-04 / -- #2 SR19,F-12,F-14
245.3 1.03741 0.32019E-04 0.37089 0.10165E-03 / -- #3 -19A
245.3 1.03741 0.32019E-04 0.37089 0.10165E-03 / -- #4 -19A
245.3 1.03741 0.32019E-04 0.37089 0.10165E-03 / -- #5 -19A
...
This keyword defines the water PVT function with the properties reference pressure, water formation volume factor, water compressibility, water viscosity and water viscosibility. The PVT properties at 12 reference points represents the 12 regions.
-- PVT region 1 (SR19,F-12,F-14)
--
PVTO
27.4 50.0 1.17014 1.224
100.0 1.16296 1.310
150.0 1.15664 1.393
200.0 1.15103 1.472
250.0 1.14598 1.548
268.5 1.14425 1.576
...
This keyword defines the oil PVT function for each region with the properties dissolved GOR, Bubble Point Pressure, Oil formation volume factor and oil viscosity. Tis properties are obtained from a Constant Mass expansion experiment.
-- PVT region 1 (SR19,F-12,F-14)
--
PVDG
50.0 0.024734 0.014335
100.0 0.011846 0.015991
150.0 0.007763 0.018581
200.0 0.005876 0.022320
250.0 0.004870 0.027202
...
This keyword defines the dry gas PVT properties for each region with properties gas phase pressure, gas formation volume factor, gas viscosity.
ROCK
329 2.0E-5 /
329 2.0E-5 /
329 2.0E-5 /
329 2.0E-5 /
...
This keyword defines the rock compressibility for each of the 13 regions at their respective reference pressures.
SOF3
0. 0. 0.
0.100000 0.00000000 0.00000000
0.15000000 0.00000000 0.00000000
0.16732500 0.00000000 0.00000001
...
The SOF3 keyword defines the oil-water relative permeability and oil-water-gas relative permeability versus oil saturation tables for when oil, gas and water are present in the input deck.
SGFN
-- Corey = 2
--Sg* Krg PCG
0.00000 0.00000 0.0
0.02000 0.00040 0.0
0.04000 0.00160 0.0
0.06000 0.00360 0.0
...
The keyword defines the gas relative permeability and oil-gas capillary pressure data versus gas saturation tables for when gas is present in the input deck.
The permeability of a reservoir rock to any one fluid in the presence of others is its effective permeability to that fluid. Relative permeability is the ratio of the effective permeability of that phase to the absolute permeability.
Capillary pressure (Pc) is the pressure difference across the interface between two immiscible fluids arising from the capillary forces. These capillary forces are surface tension and interfacial tension.
The shape of the curve depends on pore sizes, size distribution, and fluid properties.
--Sw* krw Pc
SWFN
0 0 0
0.157 0.0000000 0.000
0.173 0.0003560 0.000
0.190 0.0014241 0.000
...
This keyword defines the water relative permeability and water-oil capillary pressure data versus water saturation tables for when water is present in the input deck.
SWL
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0.199338108
0.198000357 0.19699885 0.675999999 0.189585507 0.199218422
0.675999999 0.186272502 0.18026869 0.192379802 0.193830788
This keyword specify the connate water saturation within each grid cell
EQUALS
'KRWR' 0.6 1 108 1 100 1 63 /
'KRGR' 0.7 1 108 1 100 1 63 /
'SWU' 1.00 1 108 1 100 1 63 /
'SGL' 0.00 1 108 1 100 1 63 /
'SGCR' 0.07 1 108 1 100 1 63 /
'SOGCR' 0.10 1 108 1 100 1 63 /
/
This keyword is used to assign a value to a property specific to a box of cells within the grid. Here, the relative permeability of water at maximum water saturation, the relative permeability of gas at residual oil saturation, the maximum water saturation, the connate gas saturation, the critical gas saturation, the miscible critical oil saturation properties have been changed.
The critical gas saturation is that saturation at which gas first becomes mobile in a porous material that is initially saturated with oil and/or water.
SCALECRS
'YES' /
This keyword activates three-point end-point scaling for the relative permeability curves.
REGIONS
The REGIONS section defines how various properties in the PROPS and SOLUTION sections are allocated to individual cells within the model, as well as defining various fluid in-place reporting regions.
--*******************************************************************************
-- Input of PVT areas
-- PVTNUM defined as FIPNUM for convenience
PVTNUM
1 1 1 1 1
1 1 1 1 1
1 1 1 1 1
1 1 1 1 1
1 1 1 1 1
1 1 1 1 1
1 1 1 1 12
12 12 12 12 12
12 12 12 12 12
.....
The PVTNUM keyword defines the PVT region numbers for each grid block, as such there must be one entry for each cell in the model.
-- 2 SATNUM regions, in order to include second rel perm curve in thief zone
--
EQUALS
'SATNUM' 1 1 108 1 100 1 35 /
'SATNUM' 1 1 108 1 100 46 63 /
'SATNUM' 2 1 108 1 100 36 45 /
/
This keyword is used to assign a value to a property specific to a box of cells within the grid. Here, the saturation function regions assigned to grid blocks are defined.
-- Temporary file to remove REGION 13 (scattered cells)
-- Temporary file to remove the scattered cells containing REGION 13
--
EQUALS
--------
EQLNUM 9 35 35 25 25 1 1 /
EQLNUM 6 54 54 53 53 2 2 /
...
--------
FIPNUM 9 35 35 25 25 1 1 /
FIPNUM 6 54 54 53 53 2 2 /
...
--------
PVTNUM 9 35 35 25 25 1 1 /
PVTNUM 6 54 54 53 53 2 2 /
...
/
This keyword is used to assign a value to a property specific to a box of cells within the grid. Here, the saturation function regions assigned to grid blocks are defined.
The EQLNUM keyword defines the equilibration region numbers for each grid block.
The FIPNUM keyword defines the fluid in-place region numbers for each grid block.
The PVTNUM keyword defines the PVT region numbers for each grid block
Which reservoir engineering software would be most suitable as my laptop does not support Schlumberger Petrel (due to low graphics and RAM).
Please let me know of any free softwares.
We use ResInsight for visualization. https://discovervolve.com/2020/08/01/setup-virtualbox-opm-flow-simulator-and-resinsight-to-run-the-volve-oilfield-model/ will help you install it.
Bonjour,
Serait-il possible d’avoir un aperçu sur le ”FIPNUM Property”?
MERCI.
Veuillez expliquer vos doutes sur la propriété FIPNUM.
MERCI.