Phase Behavior and ThermodynamicsFluid Properties
Egbogah Dead Oil Viscosity Below Bubble Point Formula
Egbogah Dead Oil Viscosity Below Bubble Point calculates dead oil viscosity for fluid properties workflows in phase behavior and thermodynamics.
How engineers use this formula
Use this formula when the listed inputs (API, T) are known and the assumptions behind the cited fluid properties relationship match the engineering case being checked.
Assumptions
- Input values are representative for the well, reservoir, fluid, or equipment case being evaluated.
- The declared units match the field-unit constants used in the formula.
- The cited formula applies to the selected petroleum engineering workflow.
Limitations
- The calculation does not replace a full engineering model or operating procedure.
- Accuracy depends on the source correlation, assumptions, input quality, and unit consistency.
Common mistakes
- Mixing unit systems without converting the inputs.
- Using default example values as field recommendations.
- Applying the formula outside the source assumptions.
Default example
Using the default inputs, mu_od equals 3.296862 cP.
APIdeg API
35
TdegF
180
Inputs
API
deg APIAPI Gravity of Oil
T
degFTemperature
Outputs
mu_od
cP
Dead Oil Viscosity
API
deg API
API Gravity of Oil
T
degF
Temperature
Source and review
reviewedApplied Petroleum Reservoir Engineering, Craft, B.C., Hawkins, M.F.
Craft, B.C. and Hawkins, M.F. Applied Petroleum Reservoir Engineering, 2nd Edition, Page 41.
Source