Centrifuge Mud Processing Evaluation Formula
Centrifuge Mud Processing Evaluation calculates underflow mud flow rate for mud and cementing workflows in drilling engineering.
How engineers use this formula
Use this formula when the listed inputs (MW, QM, PW, QW, PU, PO, CC, CD) are known and the assumptions behind the cited mud and cementing 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, QU equals 36.66 gal/min.
12
200
8.33
20
20
10
10
5
Inputs
MW
ppgMud Density into Centrifuge
QM
gal/minMud Flow Rate into Centrifuge
PW
ppgDilution Water Density
QW
gal/minDilution Water Flow Rate
PU
ppgUnderflow Mud Density
PO
ppgOverflow Mud Density
CC
lb/bblClay Content in Mud
CD
lb/bblAdditive Content in Mud
Outputs
QU
Underflow Mud Flow Rate
FU
Fraction of Old Mud in Underflow
QC
Clay Mass Rate
QD
Additive Mass Rate
QP
Water Flow Rate into Mixing Pit
QB
API Barite Mass Rate
Source and review
reviewedFormulas and Calculations for Drilling, Production and Workover, Lapeyrouse, N.J. (2002)
Lapeyrouse, N.J. 2002. Formulas and Calculations for Drilling, Production and Workover, 2nd Edition, Gulf Professional Publishing, Page 99.
Source