INSTALLATION DEVICE OF CASING STRING LINER IN WELL Russian patent published in 2014 - IPC E21B33/14 E21B17/06 

FIELD: oil and gas industry.

SUBSTANCE: device includes a housing with a funnel in its upper part, and annular pocket under the funnel on its inner surface and a connection in the lower part for a casing string liner. A connection pipe placed with its lower part inside the housing and forming an annular cavity together with the latter and made in the upper part so that it can be connected to a transportation string. A sleeve with conical surface in its lower part, which is placed in the annular cavity and fixed with shear elements on the connection pipe. A thrust coupling placed in the annular cavity under the sleeve and having the possibility of transferring pressure to the sleeve. Load-carrying stops, at least three, each of which has an inner side surface mating to the conical surface of the sleeve. Each load-carrying stop is placed in the annular pocket and interacts with the lower end surface with the upper end face of the thrust coupling, and with its conical surface to the conical surface of the sleeve. The interacting conical surfaces of the load-carrying stops and the sleeve form a spline connection providing possible withdrawal of the load-carrying stops out of the annular pocket.

EFFECT: simpler device and improvement of its operating reliability.

4 cl, 2 dwg