Cost of Drilling Per Foot

on 19 June 2024. Posted in Drilling Engineering

Cost of Drilling Per Foot Formula
$ C_d \;=\; \dfrac{ ( C_b + C_{to} + C_m ) + ( T_d + T_t + T_c ) \cdot ( C_r + C_s + C_t ) }{ F \cdot T_d }$
Symbol	English	Metric
$ C_d $ = Cost of Drilling per Foot	$$\;/\;hr $	-
$ C_b $ = Bit Cost	$	-
$ C_{to} $ = Tool Cost	$	-
$ C_m $ = Mud Cost	$	-
$ T_d $ = Drilling Time	$hr$	-
$ T_t $ = Trip Time	$hr$	-
$ T_c $ = Connection Time and Extras	$hr$	-
$ C_r $ = Rig Rate	$$\;/\;hr $	-
$ C_s $ = Support Rate	$$\;/\;hr $	-
$ C_t $ = Tool Rental Rate	$$\;/\;hr $	-
$ F $ = Footage	$ ft\;/\;hr $	-

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Cost of Drilling Per Foot Formula
\( C_d \;=\; \dfrac{ ( C_b + C_{to} + C_m ) + ( T_d + T_t + T_c ) \cdot ( C_r + C_s + C_t ) }{ F \cdot T_d }\)
Symbol	English	Metric
\( C_d \) = Cost of Drilling per Foot	\( \)$\(\;/\;hr \)	-
\( C_b \) = Bit Cost	\( \) $	-
$ C_{to} $ = Tool Cost	\( \) $	-
\( C_m \) = Mud Cost	\( \) $	-
$ T_d $ = Drilling Time	$hr$	-
$ T_t $ = Trip Time	$hr$	-
$ T_c $ = Connection Time and Extras	$hr$	-
$ C_r $ = Rig Rate	\( \)$\(\;/\;hr \)	-
\( C_s \) = Support Rate	\( \)$\(\;/\;hr \)	-
\( C_t \) = Tool Rental Rate	\( \)$\(\;/\;hr \)	-
\( F \) = Footage	\( ft\;/\;hr \)	-