Drilling EngineeringDrilling Hydraulics
Pump Input Power from Fuel Consumption Rate Formula
Pump Input Power from Fuel Consumption Rate calculates input power for drilling hydraulics workflows in drilling engineering.
How engineers use this formula
Use this formula when the listed inputs (Q_f, H) are known and the assumptions behind the cited drilling hydraulics 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, P_i equals 872.298625 hp.
Q_flbm/h
120
HBTU/lb
18500
Inputs
Q_f
lbm/hFuel consumption rate
H
BTU/lbFuel heating value
Outputs
P_i
hp
Input power
Q_f
lbm/h
Fuel consumption rate
H
BTU/lb
Fuel heating value
Source and review
reviewed501 Solved Problems and Calculations for Drilling Operations, Robello, S.E. (2015)
Samuel, E. Robello. 501 Solved Problems and Calculations for Drilling Operations, Sigma Quadrant, Houston, Texas, 2015, Page 6.
Source