Production EngineeringWell Performance
Perforation Friction Pressure Formula
Perforation Friction Pressure calculates perforation friction pressure for well performance workflows in production engineering.
How engineers use this formula
Use this formula when the listed inputs (Q, rho, n, C, D_p) are known and the assumptions behind the cited well performance 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, DeltaP_pf equals 0.039134 MPa.
Qm^3/min
2
rhokg/L
1.05
ncount
40
Cdimensionless
0.85
D_pcm
1.2
Inputs
Q
m^3/minFlow Rate
rho
kg/LFluid Density
n
countNumber of Perforations
C
dimensionlessPerforation Coefficient
D_p
cmDiameter of Perforation
Outputs
DeltaP_pf
MPa
Perforation Friction Pressure
Q
m^3/min
Flow Rate
D_p
cm
Diameter of Perforation
n
count
Number of Perforations
Source and review
reviewedDaneshy, A. 2013. Fundamentals of Hydraulic Fracturing, Daneshy Consultants International, Page 93.
SourceRelated formulas and calculators
Effective Wellbore Radius of a Well in Presence of Uniform Flux Fractures
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Effective Wellbore Radius of a Horizontal Well – Method 1 (Anisotropic Reservoirs)
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Effective Wellbore Radius of a Horizontal Well – van der Vlis et al. Method
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