Drilling EngineeringDrilling Hydraulics
New Pump Circulating Pressure with Friction Exponent Formula
New Pump Circulating Pressure with Friction Exponent calculates new circulating pressure for drilling hydraulics workflows in drilling engineering.
How engineers use this formula
Use this formula when the listed inputs (P_current, Q_new, Q_old, n) 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, P_new equals 1,037.047686 psi.
P_currentpsi
2500
Q_newgpm
25
Q_oldgpm
40
ndimensionless
1.8721404780053525
Inputs
P_current
psiCurrent Circulating Pressure
Q_new
gpmNew Pump Rate
Q_old
gpmOld Pump Rate
n
dimensionlessPump Pressure Exponent
Outputs
P_new
psi
New Circulating Pressure
P_current
psi
Current Circulating Pressure
Q_new
gpm
New Pump Rate
Q_old
gpm
Old Pump Rate
n
dimensionless
Pump Pressure Exponent
Source and review
reviewedDrillingFormulas. Calculate Pump Pressure and Select Most Suitable Pump Exponent.
Source