Explain the term dusting in drilling. What happens during dusting?

• A. Dusting: Drilling without sufficient fluid, resulting in excessive dust and potential bit overheating.
• B. Dusting: Cleaning dust with water.
• C. Dusting: Reducing air flow.
• D. Dusting: Using dust suppression chemical.

Answer: (A)

Dusting in drilling happens when there isn’t enough drilling fluid circulating. Without enough fluid, cuttings aren’t carried to the surface or cooled, so the bit and surrounding rock heat up from friction. The absence of proper lubrication and flushing causes the cuttings to break down into fine, dusty material that becomes airborne, hence excessive dust and the risk of overheating the bit. The other options describe actions unrelated to the actual process of dusting, such as cleaning with water, changing air flow, or adding chemicals, which are not what dusting refers to.