Height Gain from Stripping Into Influx Formula
Height Gain from Stripping Into Influx calculates height gain from stripping into influx for well control workflows in drilling engineering.
How engineers use this formula
Use this formula when the listed inputs (L_stripped, C_dp, D_dp, C_a) 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, H equals 62.493827 ft.
300
0.01776
0.00755
0.1215
Inputs
L_stripped
ftLength of Pipe Stripped
C_dp
bbl/ftDrill Pipe or Tubing Capacity
D_dp
bbl/ftDrill Pipe, Drill Collar, or Tubing Displacement
C_a
bbl/ftAnnular Capacity
Outputs
H
Height Gain from Stripping Into Influx
L_stripped
Length of Pipe Stripped
C_dp
Drill Pipe or Tubing Capacity
D_dp
Drill Pipe, Drill Collar, or Tubing Displacement
C_a
Annular Capacity
Source and review
reviewedLapeyrouse, N.J. Formulas and Calculations for Drilling, Production and Workover, 2nd Edition, Page 140.
Source