Patent ID: 9267348
Filing Date: 2016-02-23
CPC Classification: E21B

Claim Text:
1. A packer, comprising: an outer housing; an inner mandrel movable relative to the outer housing; and a packing element actuatable by the relative movement between the outer housing and the inner mandrel, wherein the inner mandrel includes a first piston surface opposed to a second piston surface to prevent relative movement between the outer housing and the inner mandrel in response to fluid pressure, wherein a surface area of the first piston surface is provided to move the inner mandrel relative to the outer housing in a first direction and a surface area of the second piston surface is provided to move the inner mandrel relative to the outer housing in a second direction, and wherein the surface areas of the first and second piston surfaces are effectively equivalent to prevent relative movement between the outer housing and the inner mandrel in response to fluid pressure.