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.