Fluid-jet drill

Details Fluid-jet drill Fluid-jet drill

1978-09-15

1979-11-27

Leppink, James A.

Boring or penetrating the earth

Bit or bit element

Specific or diverse material

166223, E21B 718

Patent

active

041756266

ABSTRACT:
A fluid-jet drill with a forward relatively rotatable cylindrical sleeve having a first set of openings through which fluid is directed to impinge upon the substance to be drilled and a second set of openings rearward of the forward end of the sleeve with axes directed at an angle to a tangent to the external surface of the sleeve through which a portion of the fluid is expelled to cause rotation of the cylindrical sleeve.

REFERENCES:
patent: 1695749 (1928-12-01), Watson
patent: 1715767 (1929-06-01), Flore
patent: 2218130 (1940-10-01), Court
patent: 3266577 (1966-08-01), Turner
patent: 4031971 (1977-06-01), Miller

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