CUP PACKER Russian patent published in 2018 - IPC E21B33/12 

FIELD: mining.

SUBSTANCE: invention relates to packers. Cup packer with the central pass-through channel contains the upper adapter, upper and lower mandrels fixed by expanding parts towards each other self-sealing cups, centralizers, lower adapter and valve. Packer is provided with an additional annular passageway. Annular passageway by means of radial openings is connected to the outer space between the cups. Central and annular passageways are formed by two concentrically mounted pipes. Outer tube is mounted on the upper and lower mandrels. Inner tube is installed in the upper and lower adapters. Adapters are provided with transverse channels connecting the central passageway of the inner tube with the space above and below the cups, and vertical grooves connecting the annular passageway with the internal cavity of the equipment installed above the packer and the space beneath the cups below the packer. Central pass-through and the annular passageway are interconnected in space below the cups by means of a valve.

EFFECT: technical result is the provision of free movement of formation fluid inside the packer during tripping operations.

1 cl, 2 dwg