Cost of Drilling Per Foot

on 19 June 2024. Posted in Drilling Engineering

Cost of Drilling Per Foot formula
$ C_d \;=\; ( C_b + C_{to} + C_m ) + ( T_d + T_t + T_c ) \; ( C_r + C_s + C_t ) \;/\; F \; 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
\( C_d \;=\; ( C_b + C_{to} + C_m ) + ( T_d + T_t + T_c ) \; ( C_r + C_s + C_t ) \;/\; F \; T_d \)
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	\( ft\;/\;hr \)	-