Device for producing boreholes in coal or the like

Details Device for producing boreholes in coal or the like Device for producing boreholes in coal or the like

1984-03-28

1985-07-16

Novosad, Stephen J.

Boring or penetrating the earth

With below-ground tool drive prime mover

Fluid rotary type

175 67, E21B 718

Patent

active

045290466

ABSTRACT:
Apparatus for drilling geological formations includes a hydraulic motor through which a high pressure fluid is delivered to plural nozzles which define material cutting jets. A portion of the fluid supplied to the motor is diverted and employed to generate a torque which causes the rotation of the rotor of the motor, which is mechanically connected to the drill head which includes the cutting jet defining nozzles, about the motor stator. The apparatus is connected to a source of pressurized fluid and thrust nozzles may be employed to position of the motor and associated drill during the boring operation.

REFERENCES:
patent: 1860214 (1932-05-01), Yeaman
patent: 2967577 (1961-01-01), Tiraspolsky
patent: 3576222 (1971-04-01), Acheson
patent: 3640352 (1972-02-01), Stuart
patent: 4333539 (1982-06-01), Lyons et al.

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