Production EngineeringWell Performance
Minimum Polished Rod Load - Sucker Rod Pump Formula
Minimum Polished Rod Load - Sucker Rod Pump calculates minimum polished rod load for well performance workflows in production engineering.
How engineers use this formula
Use this formula when the listed inputs (C, d) are known and the assumptions behind the cited well performance relationship match the engineering case being checked.
Assumptions
- Input values are representative for the well, reservoir, fluid, or equipment case being evaluated.
- The declared units match the field-unit constants used in the formula.
- The cited formula applies to the selected petroleum engineering workflow.
Limitations
- The calculation does not replace a full engineering model or operating procedure.
- Accuracy depends on the source correlation, assumptions, input quality, and unit consistency.
Common mistakes
- Mixing unit systems without converting the inputs.
- Using default example values as field recommendations.
- Applying the formula outside the source assumptions.
Default example
Using the default inputs, MPRL equals 6,000 lb.
Clb/in
200
din
30
Inputs
C
lb/inDynamometer Calibration Constant
d
inMinimum Deflection
Outputs
MPRL
lb
Minimum Polished Rod Load
C
lb/in
Dynamometer Calibration Constant
d
in
Minimum Deflection
Source and review
reviewedGuo, B., Lyons, W.C. and Ghalambor, A. 2007. Petroleum Production Engineering: A Computer-Assisted Approach, Page 18/269.
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