RWGSALT
Recognised by the OPM Flow parserPROPS
RWGSALT defines the relationship of water vaporization versus pressure and salt concentration. This keyword should be used when the VAPWAT keyword has been declared in the RUNSPEC section indicating that vaporized water is present in the gas phase. In addition, if the Salt Precipitation model has been activated via the BRINE and PRECSALT keywords, also in the RUNSPEC section, then this keyword must be present. The keyword may be used for gas-water and oil-water-gas input decks that contain the either dry or wet gas and vaporized water phases.
Note
This is an OPM Flow specific keyword for the simulator’s Water Vaporization and Salt Precipitation Models, note that these are extensions to the simulator’s standard Brine model.
Notes:
Each table is terminated by a “/” including the last table; however, there is no “/” terminator for the keyword.
Since the water component is in both the water and the gas phases, RWGSALT controls the amount of water component evaporated from the water phase into the gas phase, which is a function of both the water phase salinity and a grid cells pressure. The keyword should be used in conjunction with the dry gas PVTGW keyword or the wet gas PVTGWO keyword, both of which are in the PROPS section.
- Records
- One or more records, each terminated by
/ - Variadic
- The record accepts a variable number of items
Parameters
| No. | Name | Description | Type | Dimension | Field | Metric | Lab | Default |
|---|---|---|---|---|---|---|---|---|
| 1 | GAS_manual: PRESS | A real monotonically increasing down the column values that define the gas phase pressure, that together with salt concentration, defines the vaporized water in gas ratio (“VWGR”) or Rw | DOUBLE | Pressure | psia | barsa | atma | None |
| 2 | DATAmanual: SALTCON | A real monotonically increasing positive columnar vector defining the salt concentration in water. | DOUBLE | Concentration, OilDissolutionFactor | lb/ | kg/ | gm/ | None |
| 3 | RW | A columnar vector of real positive number values defining the vaporized water in gas ratio (Rw) that for a given PRESS and SALTCON. | stb/ | sm3/ | scc/ | None |
Example
The example defines two RWGSALT tables assuming NTPVT equals two and NPPVT is greater than or equal to eight on the TABDIMS keyword in the RUNSPEC section.
--
-- WATER VAPORIZATION TABLE FOR BRINE (OPM FLOW KEYWORD)
--
RWGSALT
-- PRES SALTCONC RVW
-- PSIA LB/STB STB/MSCF
-- ------ ---------- ---------
300 0 0.000132
0.5 0.000132
1 0.000132 /
600 0 0.000132
0.5 0.000132
1 0.000132 /
900 0 0.000132
0.5 0.000132
1 0.000132 /
1200 0 0.000132
0.5 0.000132
1 0.000132 /
1500 0 0.000132
0.5 0.000132
1 0.000132 /
1800 0 0.000132
0.5 0.000132
1 0.000132 /
2100 0 0.000132
0.5 0.000132
1 0.000132 /
2400 0 0.000132
0.5 0.000132
1 0.000132 /
/ Table NO. 1
-- PRES SALTCONC RW
-- PSIA LB/STB STB/MSCF
-- ------ ---------- ---------
300 0 0.000132
0.5 0.000132
1 0.000132 /
600 0 0.000132
0.5 0.000132
1 0.000132 /
900 0 0.000132
0.5 0.000132
1 0.000132 /
1200 0 0.000132
0.5 0.000132
1 0.000132 /
1500 0 0.000132
0.5 0.000132
1 0.000132 /
1800 0 0.000132
0.5 0.000132
1 0.000132 /
2100 0 0.000132
0.5 0.000132
1 0.000132 /
2400 0 0.000132
0.5 0.000132
1 0.000132 /
/ Table NO. 2
| Note This is an OPM Flow specific keyword for the simulator’s Water Vaporization and Salt Precipitation Models, note that these are extensions to the simulator’s standard Brine model. |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|Manual source: parts/chapters/subsections/8.3/RWGSALT.fodt