Maximum Drilling Rate

on . Posted in Drilling Engineering

    

 Maximum Drilling Rate - Large hole formula

\( MDR \;=\;   67 \; ( MW_o - MW_i )  \; C_r  \;/\; D_h^2  \)
Symbol English Metric
\( MDR \) = Maximum Drilling Rate \(ft\;/\;hr \) -
\( MW_o \) = Mud Weight Out (ppg) \(lbm \;/\; gal\) -
\( MW_i \) = Mud Weight In (ppg) \(lbm \;/\; gal\) -
\( C_r \) = Circulation Rate (gpm) \(gal \;/\; min\) -
\( D_h \) = Drill Hole Size \(in\) -

 

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Tags: Drilling