Diamond drill bit with hemispherically shaped diamond inserts

Details Diamond drill bit with hemispherically shaped diamond inserts Diamond drill bit with hemispherically shaped diamond inserts

1988-06-17

1989-08-22

Kisliuk, Bruce M.

Boring or penetrating the earth

Bit or bit element

Magnetized or with magnet

175330, 175383, 175404, 175410, 175413, 76108A, 76DIG12, 125 39, 408145, E21B 1048

Patent

active

048587060

ABSTRACT:
A rotary drill bit is provided which uses a plurality of hemispherically shaped diamond cutting elements, each having a cleaved, planar face. The diamonds are disposed in the bit such that the planar faces provide a plurality of knife-like cutting surfaces which fracture the formation being drilled and groove the fractured material.

REFERENCES:
patent: 2199692 (1940-05-01), Catland
patent: 3027952 (1962-04-01), Brooks
patent: 3311181 (1967-03-01), Fowler
patent: 3318399 (1967-09-01), Garner
patent: 3997011 (1976-12-01), Staroba
patent: 4109737 (1978-08-01), Bovenkerk
patent: 4254840 (1981-03-01), Shay, Jr.
patent: 4373593 (1983-02-01), Phaal et al.
patent: 4471845 (1984-09-01), Jurgens
patent: 4716976 (1988-01-01), Isakov
Catalogue Entitled "Diamond Drilling," of Diamant Boart, May 1985.
Advertisement Entitled "New Hughes Diamond Technology and Old-Fashioned Service Cut Drilling Costs Worldwide", by Hughes Tool Company, 1986.

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