Pump Station Piping - Pipe Diameter and Average Flow Velocity

Calculating the average liquid flow using the internal diameter the average liquid velocity ft./sec can be calculated using flowrate and diameter. Significant changes in the liquid flow due to operational changes can be a limiting factor.

Pipe diameter is based on flow rate (barrels/day) and velocity (ft./sec) in accordance with API recommended practices. Change in inlet pressure can cause cavitation of the pump and create occurrences outside the limits this calculation.

𝑉 − Average Liquid Flow Velocity [ft/sec]
𝑄 − Liquid Flow Rate [bbl/day]
𝐷_𝑖 − Internal Pipe Diameter [in]

Input Parameters

1. To create a new case, click the “Add Case” button
2. Select the Pump Specific Speed application from the Pipeline Pumps module.
3. Enter Case Name, Location, Date and any necessary notes.
4. Fill out all required fields.
5. Make sure the values you are inputting are in the correct units.
6. Click the CALCULATE button

• Liquid Flow Rate [bbl/day]
• Average Liquid Flow Velocity

• Pipe Internal Diameter [in]
• Liquid Flow Rate [bbl/day]

Outputs/Reports

1. View the results.
2. If an input parameter needs to be edited be sure to hit the CALCULATE button after the change.
3. To SAVE, fill out all required case details then click the SAVE button.
4. To rename an existing file, click the SAVE As button. Provide all case info then click SAVE.
5. To generate a REPORT, click the REPORT button.
6. The user may export the Case/Report by clicking the Export to Excel/PowerPoint icon.
7. To delete a case, click the DELETE icon near the top of the widget.

• Pipe Internal Diameter

• Average Liquid Flow Velocity

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