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Pump Slippage Calculator
The Pump Slippage calculator evaluates fluid losses past the pump plunger, helping assess pump condition and efficiency.

Inputs

General

FieldDescription
Plunger Diameter (in)Pump plunger size
Plunger Length (ft)Length of plunger
Plunger-Barrel Clearance (in)Gap between plunger and barrel
Pump Fill (%)Percentage of pump filled
SPMStrokes per minute
Run Time (hours)Daily operating hours
Liquid Dynamic Viscosity (cp)Fluid viscosity
Fluid Load (lbs)Load on pump (manual or calculated)

Fluid Load

FieldDescription
Calculate Fluid LoadToggle to auto-calculate from well data

Pumping Unit Type

FieldDescription
Pumping Unit TypeBrand or Custom
Manufacturer LineUnit manufacturer
ModelSpecific unit model

Outputs

Slippage Table

Shows slippage (bbl/day) at each SPM from 1 to maximum, allowing you to see how slippage increases with pump speed.

Efficiency Chart

Visual graph showing:
  • Pump Efficiency (%) vs. SPM
  • Slippage (bbl/day) vs. SPM
The chart helps identify the optimal operating range where efficiency is acceptable.

Use Cases

  • Diagnose worn pump conditions
  • Evaluate clearance impact on efficiency
  • Optimize SPM for minimum slippage
  • Compare pump designs