Pump Output - Duplex

The Duplex Pump Output per Stroke calculator computes the number of barrels (bbl) per stroke produced by a duplex pump.

INSTRUCTIONS: Choose units and enter the following:

• (D) Diameter of Liner
• (d) Diameter of Rod
• (S) Stroke Length
• (PE) Percent Efficiency

Pump Output per Stroke (PO): The calculator returns the pump output per stroke in barrels (bbl).  However this can be automatically converted to other volume units (e.g. gallons or liters) via the pull-down menu.

The Math / Science

A triplex mud (or slush) pump has three horizontal plungers (cylinders) driven off of one crankshaft. Triplex mud pumps are often used for oil drilling.   

The formula for duplex pump output per stroke is:

PO = 0.000162 * S * (2*D² - d²) * PE

where:

• PO = Duplex pump output per Stroke
• D = Diameter of Liner
• d = Diameter of Rod
• S = Stroke Length
• PE = Pump Efficiency

A duplex pump is a type of positive displacement pump that consists of two separate pumping units within a single pump housing. These pumps are designed to deliver a more consistent and continuous flow of fluid compared to single-piston pumps or other simpler designs. The two pumping units typically operate in tandem, with one unit active while the other is on standby. This design helps to maintain a steady flow rate and can also provide a backup in case one unit fails or requires maintenance. Duplex pumps are commonly used in various industrial applications, such as oil and gas, chemical processing, and water treatment, where reliable and efficient pumping is essential.

Pumping Calculators

• Volume Pumped over time by Pump Flow-rate
• Time to Pump Deadweight Tonnage: Computes time to pump an amount of oil measured by DWT at a pumping rate.   It also returns the volume pumped in barrels.
• Time to Pump Volume by Flow-rate: Computes the time to pump an amount of fluid (e.g., oil) based on a volume and pump rate.
• Duplex Pump Output: Barrels per stroke from a duplex pump.
• Triplex Pump Output: Barrels per stroke from a triplex pump.
• Quintuplex Pump Output: Barrels per stroke from a quintuplex pump.
• Barrel Production: Computes the total volume (barrels) produced over a period of time based on the production rate and duration.
• Annular Velocity: Compute the fluid flow velocity, based on the flow rate and pipe dimensions.
• Mud Buoyancy: Computes the buoyancy in mud
• Volume of a Pipe: Computes the volume of a pipe.
• Weight of Pipe Contents: Computes the weight (mass) based on density and pipe dimensions.
• Density of Oil:
  • Crude at (48° API): 790.0 kg/m³
  • Crude at (40° API): 825.0 kg/m³
  • Crude at (35.6° API): 847.0 kg/m³
  • Crude at (32.6° API): 862.0 kg/m³
• Energy in Crude Oil: 5800000.0 BTU/bbl
• Pump Efficiency

Oil Value in Dollars, Gold and Bitcoin:

• West Texas Intermediate Dollars per Barrel: $71.21/bbl
• West Texas Intermediate Price per Barrel in Gold: 0.023 OZT
• West Texas Intermediate Price per Barrel in Bitcoin: ₿ 0.00083816
• Brent Crude Oil Dollars per Barrel: $74.47/bbl
• Brent Crude Oil per Barrel in Gold: 0.024 OZT
• Brent Crude Oil per Barrel in Bitcoin: ₿ 0.00087653