Drilling cost per foot
Input(s)
B: Bit Cost \((\$)\)
\(\mathrm{C}_{\mathrm{R}}\): Rig Cost ($)
\(\mathrm{T}\): Rotating Time (spm)
\(\mathrm{t}\): Round Trip Time (spm)
\(\mathrm{F}: \mathrm{F} \quad\) ootage per \(\mathrm{Bit}(\mathrm{ft})\)
Output(s)
\(\mathrm{C}_{\mathrm{T}}\) :Drilling Cost ($)
Formula(s)
\[
\mathrm{C}_{\mathrm{T}}=\frac{\mathrm{B}+\mathrm{C}_{\mathrm{R}} *(\mathrm{t}+\mathrm{T})}{\mathrm{F}}
\]
Reference(s)
Lapeyrouse, N. J., 2002, Formulas and Calculations for Drilling, Production and Workover, Second Edition, Gulf Professional Publishing, Page: 28.