Maximum Drilling Rate
Maximum Drilling Rate - Large Hole Formula |
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| \( MDR \;=\; \dfrac{ 67 \cdot ( MW_o - MW_i ) \cdot C_r }{ D_h^2 }\) | ||
| 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 | \(in\) | - |
Tags: Drilling