Drilling EngineeringDrilling Hydraulics
Cuttings Slip Velocity Formula
Cuttings Slip Velocity calculates cuttings slip velocity for drilling hydraulics workflows in drilling engineering.
How engineers use this formula
Use this formula when the listed inputs (PV, MW, D_cut, DenP) are known and the assumptions behind the cited drilling hydraulics 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, V_s equals 41.087601 ft/min.
PVcP
13
MWppg
11
D_cutin
0.25
DenPppg
22
Inputs
PV
cPPlastic Viscosity
MW
ppgMud Weight
D_cut
inCuttings Diameter
DenP
ppgCuttings Density
Outputs
V_s
ft/min
Cuttings Slip Velocity
Source and review
reviewedLapeyrouse, N.J. Formulas and Calculations for Drilling, Production and Workover, 2nd Edition, Page 176.
Source