Wells – Packers or plugs – With expanding anchor
Patent
1989-06-14
1991-02-12
Kisliuk, Bruce M.
Wells
Packers or plugs
With expanding anchor
138 89, 138 97, F16L 55132
Patent
active
049916513
ABSTRACT:
The pipeline packer described herein typically includes a main body adapted for propulsion through the pipeline is an axial direction. A brake shoe support assembly is located on the main body and a plurality of circumferentially spaced brake shoes capable of gripping the interior wall of the pipeline are mounted to the support assembly. Fluid pressure activated devices are associated with the brake shoe support assembly for urging the brake shoes radially outwardly into gripping engagement with the pipeline to secure the main body in a desired location in the pipeline against the pipeline pressure forces acting thereon. A pair of annular wedges are also mounted to the main body for axial movement toward each other as the fluid pressure activated device acts on the brake shoe support assembly to urge the brake shoes into gripping engagement. An annular sealing member of elastomeric material is located between the annular wedges and is adapted to co-operate with same so as to expand radially outwardly as the annular wedges move toward each other. The packer also includes fluid pressure supply and control systems connected to the fluid pressure activated devices so that on demand the brake shoes are urged into gripping relationship with the pipeline while at the same time the annular sealing member is expanded into sealing engagement with the pipeline wall.
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Dowasue Industries Ltd.
Kisliuk Bruce M.
LandOfFree
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