Drill bit for jet assisted rotary drilling

Details Drill bit for jet assisted rotary drilling Drill bit for jet assisted rotary drilling

1983-12-23

1985-08-20

Novosad, Stephen J.

Boring or penetrating the earth

Bit or bit element

Core forming type

175393, 175418, 175410, E21B 1002

Patent

active

045358532

ABSTRACT:
The invention relates to the geometry of drill bits for jet assisted rotary drilling. According to the invention there is used a drill bit comprising platelets of small radial dimension disposed about a central burster in a discontinuous peripheral crown axially extending said drill bit, channels for supplying pressurized fluid opening from the crown close to the platelets. Said platelets are preferably separated from one another by rectilinear discharge ramps. A drill bit in accordance with this invention can be manufactured e.g. by turning or milling. It can be applied for drilling rock formations in mines, and other hard materials.

REFERENCES:
patent: 2024730 (1935-12-01), Hammer
patent: 2494188 (1950-01-01), Meaney
patent: 2740612 (1956-04-01), Phipps
patent: 2854219 (1958-09-01), MacNeil
patent: 2857140 (1958-10-01), Johnson
patent: 2905443 (1959-09-01), Goett
patent: 3077936 (1963-02-01), Arvtonoff
patent: 3301339 (1967-01-01), Pennebaker, Jr.
patent: 3672455 (1972-06-01), Foster
patent: 4207954 (1980-06-01), Jerome

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