Hydraulic drive apparatus for downhole tools providing rotationa

Details Hydraulic drive apparatus for downhole tools providing rotationa Hydraulic drive apparatus for downhole tools providing rotationa

1981-11-05

1984-02-14

Novosad, Stephen J.

Boring or penetrating the earth

With below-ground tool drive prime mover

Below-ground storage of motivating energy

175 94, 60464, 60484, E21B 402

Patent

active

044310641

ABSTRACT:
An hydraulic drive apparatus for use in downhole tools is described. The apparatus provides rotational and translational movement to a cutting tool element disposed in a downhole tool or sonde automatically adjusting advancing motion of the cutting tool to the rate of rotational movement or cutting. The apparatus is controllable from the surface through a wireline and is capable of operating in various modes to facilitate unjamming.

REFERENCES:
patent: 4149380 (1979-04-01), Nonnenmacher
patent: 4275793 (1981-06-01), Schivley, Jr. et al.
patent: 4356871 (1982-11-01), Fujikawa

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