Q: I know the dead oil viscosity of my crude, but I have a fairly high water cut (and no gas). What should I use for my viscosity in PC-PUMP?

A: The best way to determine this is to have the well fluids tested in a lab in the form in which they come from the well. Even small amounts of dissolved gas can make the actual oil viscosity significantly less than the dead oil viscosity. As for the water, if the fluids are emulsified, water can cause the actual viscosity of the mixture to be significantly higher than for pure oil. The advanced viscosity window in PC-PUMP has, for single phase only, options for varying the viscosity with water. This gives you the choice of either specifying that the fluid is an emulsion or that the viscosity is to be calculated as a weighted average of the water and oil viscosities.

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