Patent ID: 9476272
Filing Date: 2016-10-25
CPC Classification: E21B

Claim Text:
1. A non-explosive, down hole, setting tool, comprising: an elongated tool body with a longitudinal bore and having proximal and distal ends; a source of hydraulic fluid in the tool body; a first source of compressible fluid in the tool body configured to apply a first force against the hydraulic fluid; a setting piston movable in the longitudinal bore including proximal and distal sides facing the proximal and distal ends of the tool body, respectively; a second source of compressible fluid in the tool body configured to apply a second force greater than the first force against the distal side of the setting piston; a pump in the tool body configured to pump the hydraulic fluid against the proximal side of the setting piston at a third force great enough to overcome the second force and move the setting piston toward the distal end of the setting tool; a hydraulic fluid return passageway between the proximal side of the setting piston and the source of hydraulic fluid; and a reset valve configured to move between a closed position blocking hydraulic fluid from flowing through the hydraulic fluid return passageway and an open position allowing hydraulic fluid to flow through the fluid return passageway; wherein the reset valve comprises a valve stem that extends to the outer surface of the tool and is manually operable between closed and open positions for closing and opening the fluid return passageway, respectively; whereby when the reset valve is in the open position, the second force against the distal side of the setting piston can move the setting piston toward the proximal end of the tool.