Fluid actuated energy charged well service line cutter

Details Fluid actuated energy charged well service line cutter Fluid actuated energy charged well service line cutter

1984-04-19

1985-04-23

Novosad, Stephen J.

Wells

Means for cutting cable or rope below ground

166 553, E21B 2904

Patent

active

045124116

ABSTRACT:
A well service line cutter for connection in a well conduit for cutting a line extending therethrough. A housing having a bore through which a service line may extend and the housing is adapted to be connected in a well conduit. An energy chamber for holding pressurized gas is releasably contained by a hydraulic valve mechanism which in turn is held closed by a hydraulic control line extending to the well surface. Release of the hydraulic pressure opens the valve allowing the compressed gas to actuate a piston which moves cutters into the bore for cutting any line in the bore. A biasing mechanism is connected to the piston for returning the piston and cutter to the retracted position and opening the bore after cutting the line. The energy chamber may be charged for a single operation or may be recharged by a line extending to the well surface.

REFERENCES:
patent: 1813368 (1931-07-01), Toles
patent: 3073388 (1963-01-01), Chenault
patent: 3193013 (1965-07-01), Whiteside
patent: 4237972 (1980-12-01), Lanmon

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