Fluid actuated downhole drilling device

Details Fluid actuated downhole drilling device Fluid actuated downhole drilling device

1974-11-13

1976-06-22

Leppink, James A.

Boring or penetrating the earth

With below-ground tool drive prime mover

Fluid rotary type

415502, E21B 308

Patent

active

039645584

ABSTRACT:
A downhole fluid powered mover for use in earth bore holes having a fluid turbine to produce torque and a positive displacement fluid motor to regulate the speed of an output shaft connected to both turbine and motor. Alternate embodiments include an overrunning clutch to aid in start-up of the turbine and to prevent overspeed of the turbine.

REFERENCES:
patent: 2925252 (1960-02-01), Minor
patent: 3088529 (1963-05-01), Cullen et al.
patent: 3112801 (1963-12-01), Clark et al.
patent: 3249162 (1966-05-01), Brown
patent: 3356338 (1967-12-01), Ioanesyan et al.
patent: 3728040 (1973-04-01), Ioanesian et al.
patent: 3766992 (1973-10-01), Tiraspolsky et al.
patent: 3802515 (1974-04-01), Flamand et al.
patent: 3840080 (1974-10-01), Berryman
patent: 3866678 (1975-02-01), Jeter

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