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Emeraude v2.60 – Doc v2.60.01 - © KAPPA 1988-2010
Guided Interpretation #3
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B03 - 2/11
An interpretation was initialized and carried out, up to the creation of rate calculation zones.
The interpretation reference channels are defined for Temperature, Pressure, Water and Gas
holdups. You can click on the ‘PVT’ option to check the selected PVT model. This model is 3-
phase and has been matched on lab data.
B03.2 • Interpretation with the ‘Zoned’ method
In PL Interpretation tab, go to Information.
Keep the defaults: ‘Zoned’ method and Init based on ‘Zone local values’.
Close the window with OK.
Click on ‘Zones rates’.
The ‘Init’ tab of the ‘Zone Rates’ dialog is displayed and shows the default selection made by
the software. We saw that the PVT has the potential for 3 phases. Since there are enough
measurements (density and water and gas holdups here) Emeraude suggests the ‘3-Phase L-G’
model. This model combines a Liquid-Gas and Liquid-Liquid slippage correlations.
Fig. B03.2 • ‘Zone Rates’ Init
With the selection above, the Dukler correlation is used to calculate the slippage between the
gas and mixed liquid phases. Within the liquid phase the ABB–Deviated correlation is used to
compute the slippage velocity between the oil and the water phases.
Accept the current selection. Go to the ‘Rate Calculation’ tab, Fig. B03.3.
All 3 rates have been calculated from the current input by running a regression on each
calculation zone. Each regression is run independent of the others, to find the local value of
Qw,Qo,Qg by matching the measured and simulated values on the calculation zone.
In the ‘Zoned’ approach, Emeraude treats only the rates as variables, and the holdups are
inferred from the selected slip model(s). In this case there are two slippage velocities. Note
that the water-oil slippage is given relative to the liquid phase; hence the reported value is
equal to: