Subsurface safety valve system with hydraulic packer

摘要

A well production apparatus for fluid production through a pair of downhole safety valves to both well tubing and the tubing annulus includes a packer with a dual bore head connected to the lower end of the tubing. Primary and secondary packer mandrels depending from connections with said head serve as conduits for directing production fluid to the safety valves with the secondary mandrel also serving as a conduit through which a power conductor extends for connecting with a motor beneath the packer. A set of hydraulically movable slips slidable between retracted and deployed positions are carried on the mandrels on opposite sides of a packing element and a setting cylinder secured to one of said packer mandrels defines a pressure chamber containing a setting piston which is movable from a retracted position to an extended position to compress said packing element and deploy said slips for anchoring said packer in the casing. A control pressure passage extension with one end connecting to said pressure chamber exteriorly of said primary packer mandrel and an opposite end connected to a control pressure line leading to the safety valve provides pressure fluid for setting the slips.