FIELD: soil or rock drilling.
SUBSTANCE: group of inventions relates to drill bits. Drill bit includes a bit body having a body surface, a plurality of fixed blades extending from the bit body, each has a leading surface and a back surface, a plurality of nozzles mounted on the surface of the body to remove the drilling fluid from the bit body, and a plurality of flow guides for direction parts of the drilling fluid from the bit body. Each of the plurality of flow guides extends longitudinally from the surface of the housing. Each of the plurality of flow guides extends along the leading surface of one of the plurality of fixed blades.
EFFECT: improving the hydraulic characteristics of the bit.
24 cl, 7 dwg
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|
RU2521132C2 |
