Cavitating liquid jet assisted drill bit and method for deep-hol

Details Cavitating liquid jet assisted drill bit and method for deep-hol Cavitating liquid jet assisted drill bit and method for deep-hol

1980-12-01

1983-07-05

Pate, III, William F.

Boring or penetrating the earth

Bit or bit element

With fluid conduit lining or element

175422, 175340, 175 67, 239589, E21B 1060

Patent

active

043913393

ABSTRACT:
A drill bit and a method for deep-hole drilling in which the drill bit has mechanical cutting means located on its lower cutting face for cutting a solid surface upon rotation of the bit and a plurality of cavitating liquid jet nozzles spaced around the face of the bit to assist in the drilling action, the nozzles being located so as to discharge a plurality of downwardly directed and concentric liquid jets that cavitate to fracture the surface to be drilled in a series of non-overlapping slots as the bit is rotated.

REFERENCES:
patent: 2175160 (1939-10-01), Zobel et al.
patent: 2868512 (1959-01-01), Sease
patent: 3129777 (1964-04-01), Haspert
patent: 3207241 (1965-09-01), Neilson
patent: 3528704 (1970-09-01), Johnson, Jr.
patent: 4131236 (1978-12-01), Saunders
patent: 4193463 (1980-03-01), Evans

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