Pump Output Calculation for Duplex Pump and Triplex Pump

Rig pump output, normally in bbl per stroke, of mud pumps on the rig is important figures that we really need to know because we will use pump out put figures to calculates many things such as bottom up strokes,  wash out depth, tracking drilling fluid, etc. In this post, you will learn how to calculate pump out put for triplex pump and duplex pump.

Triplex Mud Pump

Triplex Pump Output Formula

Triplex Pump Output in bbl/stk = 0.000243 x (liner diameter in inch) 2 X (stroke length in inch)

Example: Determine the pump output in bbl/stk at 100% and 97% efficiency
Linner size = 6 inch
Stroke length = 12 inch
Triplex pump output:
PO @ 100% = 0.000243 x 62 x 12
PO @ 100% = 0.104976 bbl/stk

Adjust the triplex pump output for 97% efficiency:
Decimal equivalent = 97 ÷ 100 = 0.97
PO @ 97% = 0.104976 bbl/stk x 0.97
PO @ 97% = 0.101827 bbl/stk

Duplex Mud Pump (Ref: http://www.sunmachinery.com/8214R_01.jpg)

Duplex Pump Output Formula

Duplex Pump Output in bbl/stk = 0.000162 x S x [2(D)2 – d2]

Where:
D = liner diameter in inch
S = stroke length in inch
d = rod diameter in inch

Example: Determine the duplex pump output in bbl/stk at 100% and 85% efficiency

Liner diameter = 6 inch
Stroke length = 12 inch
Rod diameter = 2.0 in.

Duplex pump efficiency = 100 %.
PO @ 100% = 0.000162 x 12 x [2 (6) 2 -22 ]
PO @ 100% = 0.13219 bbl/stk

Adjust pump output for 85% efficiency:
PO @ 85% = 0.132192 bbl/stk x 0.85
PO @ 85% = 0.11236 bbl/stk

Please find the Excel sheet to calculate triplex pump output and duplex pump output

Ref books: Lapeyrouse, N.J., 2002. Formulas and calculations for drilling, production and workover, Boston: Gulf Professional publishing.

Bourgoyne, A.J.T., Chenevert , M.E. & Millheim, K.K., 1986. SPE Textbook Series, Volume 2: Applied Drilling Engineering, Society of Petroleum Engineers.

Mitchell, R.F., Miska, S. & Aadny, B.S., 2011. Fundamentals of drilling engineering, Richardson, TX: Society of Petroleum Engineers.

Related Post

Pump Pressure and Pump Stroke Relationship There is relationship between pump pressure and pump stroke that you really need to understand and be able to determine pump pressure after adjusting ...
Increase oil/water ratio The concept of increase oil water ratio is to increase oil volume in the system without any changes in water to meet new oil water ratio. How can ...
Drilling Formula Calculation Sheet V1.1 I update some useful drilling formulas into the drilling formulas spread sheet called version 1.1. Please feel free to download. Click Here >&g...
Volume of Mud Increases due to Adding Calcium Carb... The concept of mud volume increase due to adding calcium carbonate is as same as the mud volume increase by adding barite. The formula for calculating...
Share the joy
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  
  •  

About DrillingFormulas.Com

Working in the oil field and loving to share knowledge.
Tagged . Bookmark the permalink.

15 Responses to Pump Output Calculation for Duplex Pump and Triplex Pump

  1. Pingback: annular velocity calculation | Drilling Formulas and Drilling Calculations

  2. Pingback: Lag Time for Drilling Business and How to Calculate Theoretical Lag Time‎

  3. Pingback: Well Control Formulas Part 4‎

  4. ranjit dantani says:

    Where u given example for duplex there little fault for small (d) u given12″ insted for 2″

  5. Omar says:

    How I can calculate the pump effeciency prior to cement job

  6. Pingback: Triplex Pump out

  7. Jason Lueck says:

    My question is where is the constant .000243 for a tri-plex and .000162 for a duplex derived from? Just more out of curiosity than anything else.

  8. :-) Placid Akanazu says:

    Please,how can I calculate the maximum pressure for each pump liner sizes .
    Thanks

  9. Soma sekhar says:

    Without changing liners of a triplex mud pump can I get raise in discharge pressure by reducing SPM below it’s maximum rating?

Leave a Reply

Your email address will not be published. Required fields are marked *