MECHANICAL PACKER OF DOUBLE ACTION Russian patent published in 2014 - IPC E21B33/12 

FIELD: construction.

SUBSTANCE: invention relates to construction industry and operation of oil, gas and other wells, and namely to mechanical packers of an axial type of double action. Essence of the invention: a packer includes a shaft, on which there put is a movable lower mechanical anchor and a central part moving in axial direction and made in the form of a sleeve, on the upper part of which there screwed along the thread is either an upper cone, or a hydraulic anchor, and on the lower part of the sleeve there movably installed are seals and a lower cone rigidly connected to another sleeve performing a movable mechanical connection between central part and lower anchor, the movement trajectory of which is restricted by a slot made on the packer shaft. Mechanical connection of the central part and the lower anchor is performed by means of two control shaped slots, one of which, which is fixed, is located on the shaft, and the second one, which is movable, is made on a slot sleeve.

EFFECT: providing an axial method of packer setting with double reception of external loads without consumption of weight of the column on opening of locking devices and at minimum axial size.

5 dwg