FIELD: process engineering.
SUBSTANCE: invention relates to drilling, particularly, to deflectors of drilling or milling bits. Proposed device is configured for contactless attachment of deflector to milling/drilling bit. Note here that said bit comprises shank and multiple cutting blades. The latter extend below the shank to define the bit outer tooth and cutting surface. Besides it includes at least one hole for mud escape between two blades of set multiple cutting blades. It comprises upper yoke to be arranged around said bit, at least one connector arranged at first end on upper yoke above cutting blades to extend therefrom downward. Note here that said connector can extend through bit mud discharge bore. Note here that said connector features length sufficient for it to extend beyond bi cutting surface. Deflector can be fitted on second end of at least one connector.
EFFECT: safe and efficient trip.
30 cl, 23 dwg
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