Rotary drill bits and method of use

Details Rotary drill bits and method of use Rotary drill bits and method of use

1981-01-02

1983-08-09

Novosad, Stephen J.

Boring or penetrating the earth

Bit or bit element

Plural separable cutter elements

175394, E21B 1018

Patent

active

043973639

ABSTRACT:
A rotary drill bit for use in subsurface formations includes fluid channels for the passage of drilling mud to remove cuttings. According to the invention to clear blockages there are only one or two unbranched channels for the passage of mud past the cutting elements and these are arranged in a spiral.

REFERENCES:
patent: 2264617 (1941-12-01), Carpenter et al.
patent: 2365941 (1944-12-01), Crake
patent: 2371489 (1945-03-01), Williams, Jr.
patent: 2809808 (1957-10-01), Catallo
patent: 2838284 (1958-06-01), Austin
patent: 3158216 (1964-11-01), Baron et al.
patent: 3709308 (1973-01-01), Rowley et al.
patent: 3727704 (1973-04-01), Abplanalp
patent: 3915246 (1975-10-01), Sheshtawy

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