MGWC Practice Questions - NGWA Master Groundwater Contractor Exam

In direct rotary drilling, what is the primary function of the drilling fluid (mud)?

Cool and lubricate the bit, remove cuttings, and stabilize the borehole wall Supply compressed air to power the downhole hammer Chemically dissolve the formation to speed penetration Neutralize groundwater acidity before sampling

Correct Answer:

Cool and lubricate the bit, remove cuttings, and stabilize the borehole wall

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