Phase Behavior and ThermodynamicsFluid Properties
Viscosibility Formula
Viscosibility calculates viscosibility for fluid properties workflows in phase behavior and thermodynamics.
How engineers use this formula
Use this formula when the listed inputs (mu, d_mu, dP) 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, cv equals 0.00001 1/psi.
mucP
2
d_mucP
0.02
dPpsi
1000
Inputs
mu
cPFluid Viscosity
d_mu
cPChange in Viscosity
dP
psiChange in Pressure
Outputs
cv
1/psi
Viscosibility
mu
cP
Fluid Viscosity
d_mu
cP
Change in Viscosity
dP
psi
Change in Pressure
Source and review
reviewedPetroWiki. Viscosibility.
Source