DEVICE USED FOR INSTALLING CASING LINER IN WELL Russian patent published in 2009 - IPC E21B33/14 

FIELD: oil and gas industry.

SUBSTANCE: invention refers to the building industry and operation of oil and gas wells, and namely to devices used for installing the casing liner in the well. Device consists of a liner with a hopper in upper part and conical external surface, a transport casing of the liner with a mounting seat connecting that casing with left-handed thread to the hopper having the only possibility of axial movement, and a ring seat, and upper and lower flexible cups which are installed on the liner external surface and provided with the possibility of being arranged sequentially on the side surface of the ring seat during hopper movement when transport casing is being detached, a hydraulic pusher with dies, which forms together with liner an annular chamber hydraulically connected with liner cavity in its operating position. Dies are made so that they can interact with liner conical surface.

EFFECT: improving sealing reliability of after-casing space of the liner, and simplifying the device design.

7 cl, 1 dwg