Pipeline Pig Speed Calculator
Calculates pig velocity in pipelines based on differential pressure and bypass flow. Ensures safe pigging speeds to prevent damage and optimize cleaning or inspection operations.
Calculation Mode:
Calculate Speed from Flow
MMSCFD
Calculate Flow for Speed
mph
MMSCFD
Track Pig Location
MMSCFD
hours
miles
Valve Stations
Name
Milepost
Pipeline Specifications
miles
in
Operating Conditions
psig
°F
%
Pig Speed Results
Pig Speed
- mph
Pig Speed (ft/s)-
Est. Travel Time-
Gas Velocity- ft/sec
Required Flow Results
Required Flow
- MMSCFD
Required Gas Velocity- ft/sec
Pig Location Results
Current Location
- miles
Progress- %
Next Valve-
Distance to Next- miles
Est. Time Remaining-
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Formula (Pig Speed)
Vpig = (Q × 1440) / (A × 24 × 60 × 60)
Vpig = Pig Speed (mph)
Q = Flow Rate (MMSCFD)
A = Pipe Cross-sectional Area (ft²)
Standards & References
API RP 1160 Managing System Integrity for Hazardous Liquid Pipelines
ASME B31.8S Managing System Integrity of Gas Pipelines
NACE SP0102 In-Line Inspection of Pipelines
Important Notes
Pig speed is crucial for effective cleaning and inspection.
Optimal pig speed varies by pig type, pipeline conditions, and objectives.
Excessive speed can damage pigs or pipeline; too slow can be ineffective.
Pig tracking relies on accurate speed calculations and milepost data.