Continuous injection of an inert gas through a drill rig for dri

Details Continuous injection of an inert gas through a drill rig for dri Continuous injection of an inert gas through a drill rig for dri

1996-01-31

1997-12-30

Tsay, Frank

Boring or penetrating the earth

With above-ground means for handling drilling fluid or cutting

With tool shaft having plural passages for drilling fluid

175394, E21B 2100, E21B 1044

Patent

active

057019630

ABSTRACT:
A drill rig for drilling in potentially hazardous areas includes a drill having conventional features such as a frame, a gear motor, gear box, and a drive. A hollow rotating shaft projects through the drive and frame. An auger, connected to the shaft is provided with a multiplicity of holes. An inert gas is supplied to the hollow shaft and directed from the rotating shaft to the holes in the auger. The inert gas flows down the hollow shaft, and then down the hollow auger and out through the holes in the bottom of the auger into the potentially hazardous area.

REFERENCES:
patent: 3596720 (1971-08-01), Elenburg
patent: 3774701 (1973-11-01), Weaver
patent: 3870237 (1975-03-01), Aldrich
patent: 3885629 (1975-05-01), Erb
patent: 4351400 (1982-09-01), Faulkner
patent: 5337838 (1994-08-01), Sorensen
patent: 5388650 (1995-02-01), Michael

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