Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes

Introduced: January 2000

Last revised: January 2006

Full Title

Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor > Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes

Classification Context

Section:: FIXED CONSTRUCTIONS
Class:: EARTH OR ROCK DRILLING; MINING
Subclass:: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS

1 direct subcode

Child Classifications

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E21B 21/015 Means engaging the bore entrance, e.g. hoods for collecting dust