Production EngineeringWell Performance
Progressive Cavity Pump Mechanical Resistant Torque Formula
Progressive Cavity Pump Mechanical Resistant Torque calculates mechanical resistant torque for well performance workflows in production engineering.
How engineers use this formula
Use this formula when the listed inputs (V_o, DeltaP, e_p) 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, T_m equals 3,840 ft lbf.
V_oft3
0.02
DeltaPpsi
1000
e_pfraction
0.75
Inputs
V_o
ft3Pump Displacement
DeltaP
psiPump Head Rating
e_p
fractionPump Efficiency
Outputs
T_m
ft lbf
Mechanical Resistant Torque
V_o
ft3
Pump Displacement
DeltaP
psi
Pump Head Rating
e_p
fraction
Pump Efficiency
Source and review
reviewedPetroleum Production Engineering: A Computer-Assisted Approach, Guo, B., Lyons, W.C., Ghalambor, A. (2007)
Guo, B., Lyons, W.C. and Ghalambor, A. 2007. Petroleum Production Engineering: A Computer-Assisted Approach, Page 14/214.
source conflict
SourceRelated formulas and calculators
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Effective Wellbore Radius of a Horizontal Well – Method 1 (Anisotropic Reservoirs)
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Effective Wellbore Radius of a Horizontal Well – van der Vlis et al. Method
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