Drilling EngineeringDrilling Hydraulics
Open-Ended Displacement Volume of Pipe Formula
Open-Ended Displacement Volume of Pipe calculates open-ended pipe displacement volume for drilling hydraulics workflows in drilling engineering.
How engineers use this formula
Use this formula when the listed inputs (D_o, D_i, L) 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, V_o equals 6.523943 bbl.
D_oin
5
D_iin
4.276
Lft
1000
Inputs
D_o
inPipe Outside Diameter
D_i
inPipe Inside Diameter
L
ftPipe Length
Outputs
V_o
bbl
Open-Ended Pipe Displacement Volume
D_o
in
Pipe Outside Diameter
D_i
in
Pipe Inside Diameter
L
ft
Pipe Length
Source and review
reviewed501 Solved Problems and Calculations for Drilling Operations, Samuel, E. Robello (2015)
Samuel, E. Robello. 501 Solved Problems and Calculations for Drilling Operations. Sigma Quadrant, Houston, Texas, 2015, Page 45.
Source