Production EngineeringWell Performance
Progressive Cavity Pump Head Rating Formula
Progressive Cavity Pump Head Rating calculates pump head rating for well performance workflows in production engineering.
How engineers use this formula
Use this formula when the listed inputs (n_p, delta_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 equals 750 psi.
n_pdimensionless
8
delta_ppsi
50
Inputs
n_p
dimensionlessNumber of Stator Pitches
delta_p
psiHead Rating Developed in an Elementary Cavity
Outputs
DeltaP
psi
Pump Head Rating
delta_p
psi
Head Rating Developed in an Elementary Cavity
n_p
dimensionless
Number of Stator Pitches
Source and review
reviewedGuo, B., Lyons, W.C. and Ghalambor, A. 2007. Petroleum Production Engineering: A Computer-Assisted Approach, Page 14.
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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