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.