For Air Drilling we have terms and definitions in 2 topics. The topics are Energy and Oil.

A rotary drilling technique in which compressed air is used instead of fluids to circulate, or bring to the surface, bits of rock and other cuttings from the drill bit.
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The use of compressed air instead of mud as a drilling fluid to remove the cuttings; air drilling increases penetration rates but offers no control over downhole gas pressure on water in the subsurface formations or downhole gas pressure.
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