Control Drilling Maximum Drilling Rate Formula
Control Drilling Maximum Drilling Rate calculates maximum drilling rate for drilling operations and economics workflows in drilling engineering.
How engineers use this formula
Use this formula when the listed inputs (q, D_h, MW_o, MW_i) are known and the assumptions behind the cited drilling operations and economics 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, MDR equals 26.253061 ft/h.
600
17.5
12.2
12
Inputs
q
gpmCirculation Rate
D_h
inHole Diameter
MW_o
ppgMud Weight Out
MW_i
ppgMud Weight In
Outputs
MDR
Maximum Drilling Rate
q
Circulation Rate
D_h
Hole Diameter
MW_o
Mud Weight Out
MW_i
Mud Weight In
Source and review
reviewedFormulas and Calculations for Drilling, Production and Workover, Lyons, W.C., Carter, T., Lapeyrouse, N.J. (2012)
Lyons, W.C., Carter, T., and Lapeyrouse, N.J. 2012. Formulas and Calculations for Drilling, Production and Workover, 3rd Edition, Gulf Professional Publishing, Page 24.
Source