Setting Casing Ton Miles Formula
Setting Casing Ton Miles calculates setting casing ton miles for drillstring and rig mechanics workflows in drilling engineering.
How engineers use this formula
Use this formula when the listed inputs (W_p, L_cs, D, W_b) are known and the assumptions behind the cited drillstring and rig mechanics 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, T_c equals 228.030303 ton miles.
40
40
10000
80000
Inputs
W_p
lb/ftBuoyed weight of casing
L_cs
ftLength of one joint of casing
D
ftCasing setting depth
W_b
lbWeight of traveling block assembly
Outputs
T_c
Setting casing ton miles
W_p
Buoyed weight of casing
L_cs
Length of one joint of casing
W_b
Weight of traveling block assembly
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 47.
Source