Self sharpening drag bit for sub-surface formation drilling

Details Self sharpening drag bit for sub-surface formation drilling Self sharpening drag bit for sub-surface formation drilling

1984-01-16

1985-08-06

Novosad, Stephen J.

Boring or penetrating the earth

Bit or bit element

Magnetized or with magnet

175379, E21B 1046

Patent

active

045330042

ABSTRACT:
A self-sharpening rotary drag bit assembly comprises:

REFERENCES:
patent: 2234273 (1941-03-01), Pennington
patent: 2888247 (1959-05-01), Haglund
patent: 2889138 (1959-06-01), Haglund
patent: 4225322 (1980-09-01), Knemeyer
patent: 4359335 (1982-11-01), Garner
patent: 4460053 (1984-07-01), Jurgens et al.
patent: 4465148 (1984-08-01), Morris et al.

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