The Scotsman Hydraulic Set Anchor (Scotsman) provides a means of securing liners and bottom hole assemblies in casing or openhole. The Scotsman has a large contact area between the bi-directional slips and the casing or open hole, ensuring a high anchoring force and a minimal contact pressure. Despite this, the Scotsman is short, allowing it to pass through tight dog legs and other restrictions.
An anti-preset mechanism ensures the SHSA will not start to set until a pre-determined differential pressure is achieved. Once at depth, the SHSA is fully set by the application of a minimum differential tubing pressure for 30 minutes.
The SHSA incorporates a pull-to-release feature, the shear value of which can be varied at the surface before running in the hole. This can be replaced with cut to release, shift, and pump to release or punch and pump to release.
