LINER TOP REPAIR

In rare occasions, due to a variety of reasons, liner hanger packers can fail or leak. Some of the more common reasons for packer damage are:

•                     Excessive annular velocities from running speeds or pump rates

•                 Debris, scale, or solids across packer sealing area causing hanger skidding or ineffective seal

•                 Packer damage when running through BOP

•                 Casing wear at setting depth

•                 Exceeding technical or pressure ratings of selected liner hanger and packer

•                 Casing metallurgy or ID installed differs from specification provided

The liner top repair system utilizes a liner packer primarily run on drill pipe to repair a liner lap leak or in monobore liner top completions. The packer can also be run when tying back a liner to surface or scabbing across damaged casing above the liner.

The Liner Repair Packer operates using a mechanical or hydraulic setting tool and a liner setting sleeve with a polished bore receptacle (PBR) extension. The straight slack off weight setting mechanism eliminates pipe rotation, hydraulic setting ports and plugs or balls to set the packer.