HYDRAULIC ANCHOR Russian patent published in 2009 - IPC E21B23/04 E21B29/00 

FIELD: oil and gas industry.

SUBSTANCE: invention refers to oil and gas producing industry, namely to down-hole equipment fixing devices mainly at profile shutters installation. The anchor consists of a body with central channel and pipe branches mounted on the channel. The pipe branches are covered by rubberised fabric hoses with lateral corrugations. One end of the pipe branch and hose is fixed on the body, the other - on the mandrel substitutes that serve for connection with installation equipment. Pipe branches with hoses form hydraulic chambers that are connected with body central channel through the holes in pipe branches walls.

EFFECT: increase of anchor safety and operation capability owing to anchor elements in a form of corrugation hoses made of high-strength rubberised fabric increases their extension rate in cross section, increases the contact surface of anchor elements in working position without shaped tubes damaging and provides their guaranteed return to transit condition.

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