Method and improvement to drilling tools allowing great efficien

Details Method and improvement to drilling tools allowing great efficien Method and improvement to drilling tools allowing great efficien

1985-06-27

1988-04-19

Novosad, Stephen J.

Boring or penetrating the earth

Processes

Boring with specific fluid

175393, E21B 1018

Patent

active

047383208

ABSTRACT:
A method and improvement to drilling tools efficient cleaning of the cutting face. The method improves the removal of cuttings from a drilling tool rotating, more especially on itself in operation, about the axis of the tool, said tool comprising a body having a first end adapted for connection to rotary drive means and the second end defining a cutting face. The zone of said second end adajcent said axis is designated as the central part of the tool and said tool comprises at least one nozzle. The method consists in positioning said nozzles so as to produce a flow orientated towards the central part of the tool, the vector obtained by the orthogonal projection on a plane perpendicular to the axis of the tool of the speed of said flow in the central part of the tool being zero at any point of said central part, said vector forming the effective speed vector.

REFERENCES:
patent: 2776115 (1957-01-01), Williams, Jr.
patent: 2807444 (1957-09-01), Reitschneider
patent: 3144087 (1964-08-01), Williams, Jr.
patent: 3220754 (1965-11-01), Mori
patent: 3746108 (1973-07-01), Hall
patent: 4296824 (1981-10-01), Kennington
patent: 4540056 (1985-09-01), O'Hanlon
patent: 4546837 (1985-10-01), Childers et al.

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