Rotary drill bit

Details Rotary drill bit Rotary drill bit

1981-10-19

1984-06-05

Novosad, Stephen J.

Boring or penetrating the earth

Bit or bit element

With fluid conduit lining or element

299 81, E21B 1066

Patent

active

044523246

ABSTRACT:
A rotary drill bit, particularly for deep-well drilling, comprising a body (1) having a gauge region, a cutting surface which is defined by projecting cutting members (4) supported at the outer periphery of the body on supporting members and nozzle passages (6 ) through which flushing liquid can flow, and in which at least some of the nozzle passages (6) comprise an outlet region which is directed towards the cutting members and which gives the jets of flushing liquid (10') emerging therefrom an alignment with at least one component facing in the direction of the drillings flowing off along the outer face of the body.

REFERENCES:
patent: 1388490 (1921-08-01), Suman
patent: 3753597 (1973-08-01), French
patent: 4222447 (1980-09-01), Cholet
patent: 4296824 (1981-10-01), Kennington
patent: 4303136 (1981-12-01), Ball

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