Drilling EngineeringWell Control
Subsea Choke Line Pressure Loss Formula
Subsea Choke Line Pressure Loss calculates choke line pressure loss for well control workflows in drilling engineering.
How engineers use this formula
Use this formula when the listed inputs (MW, L_choke, Q_circ, ID_choke) are known and the assumptions behind the cited well control 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, CLPL equals 2,582.457085 psi.
MWppg
12
L_chokeft
5000
Q_circgpm
600
ID_chokein
3
Inputs
MW
ppgMud Weight
L_choke
ftChoke Line Length
Q_circ
gpmCirculation Rate
ID_choke
inChoke Line Inside Diameter
Outputs
CLPL
psi
Choke Line Pressure Loss
MW
ppg
Mud Weight
L_choke
ft
Choke Line Length
Q_circ
gpm
Circulation Rate
ID_choke
in
Choke Line Inside Diameter
Source and review
reviewedFormulas and Calculations for Drilling, Production and Workover, Lapeyrouse, N.J. (2002)
Lapeyrouse, N.J. 2002. Formulas and Calculations for Drilling, Production and Workover, 2nd Edition, Page 148.
Source