FACILITY FOR SEALING OF CASING LINER IN WELL Russian patent published in 2009 - IPC E21B23/06 E21B33/12 

FIELD: oil and gas production.

SUBSTANCE: invention refers to construction and operation of oil and gas wells, particularly to sealing of annular space of casing liner in well. The facility consists of a transporting column, of a packer unit in form of a mandrel, of a sealing element installed therein, of cone for the sealing element connected to the mandrel and of a puller interacting with the sealing element. The puller is arranged outside the mandrel and connected to it with at least one shear element; also the puller is connected to the transporting column with a detachable unit. Notably, the facility is equipped with an anchor in its lower part; the anchor serves for engagement with internal relief surface of the liner in its upper part.

EFFECT: facilitates simplification of design of facility, increased reliability of its operation and expanded functionality.

5 cl, 2 dwg