Subsurface conduit setting and pulling tool

Details Subsurface conduit setting and pulling tool Subsurface conduit setting and pulling tool

1980-09-02

1983-01-18

Cherry, Johnny D.

Handling: hand and hoist-line implements

Grapple

Well type

166 98, 294 8625, E21B 2300

Patent

active

043689116

ABSTRACT:
A tool for setting or pulling a subsurface tool from a conduit having a pressure charge gas piston and cylinder which are releasably locked together. The piston and cylinder is actuated by setting slips on the tool and unlocking the piston and cylinder. First and second shoulders are actuated by the piston and cylinder to set or pull the well tool. The piston and cylinder includes a movable member initially limiting the communication of the gas with the piston. Drag blocks are connected to the slips for preventing expansion of the slips on downward movement of the tool, and a connection between the tool body and one of the piston and cylinder will set the slips on upward movement of the body and release the piston and cylinder. The tool is particularly useful in setting and pulling a safety valve from a flowline.

REFERENCES:
patent: 2734581 (1956-02-01), Bonner
patent: 2965175 (1960-12-01), Ransom
patent: 2984302 (1961-05-01), Church
patent: 3147809 (1964-09-01), Thomas

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