Drill Pipe or Drill Collar Displacement and Weight Formula
Drill Pipe or Drill Collar Displacement and Weight calculates pipe or drill collar displacement for drilling hydraulics workflows in drilling engineering.
How engineers use this formula
Use this formula when the listed inputs (OD, ID) 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, Disp equals 0.006524 bbl/ft.
5
4.276
Inputs
OD
inPipe Outside Diameter
ID
inPipe Inside Diameter
Outputs
Disp
Pipe or Drill Collar Displacement
W
Approximate Tubular Weight
OD
Pipe Outside Diameter
ID
Pipe 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, Gulf Professional Publishing, Page 25.
Source