Which of the following is NOT a field maintenance task for drill bits?

• A. Cleaning
• B. Inspecting for wear
• C. Sharpening teeth
• D. Recalibrating bit torque

Answer: (D)

The main idea is to distinguish what maintenance tasks are done directly on the drill bit versus what belongs to equipment settings. In the field, keeping a drill bit in good condition focuses on the bit itself: cleaning it to remove debris and buildup, inspecting for wear or damage, and sharpening the teeth to maintain cutting efficiency. Recalibrating bit torque, however, is about adjusting the torque settings of the drilling rig or motor—not the bit’s physical condition. That makes it an equipment setting task rather than a bit maintenance task. So recalibrating bit torque is not something you do to the drill bit in the field.