DEVICE FOR INSTALLING CASING FILTERS IN DEEP PERFORATION CHANNELS-WAVEGUIDES Russian patent published in 2018 - IPC E21B23/12 E21B43/10 E21B7/08 

FIELD: construction.

SUBSTANCE: invention relates to technical means for construction and repair of oil and gas wells, namely to secondary opening of productive beds. Device for installing casing filters in deep perforation channels-waveguides comprises a hollow body with a guide pipe installed therein, a conveying tube, a wedge-deflector and an associated armature. In addition, it is provided with a rotationally-orientated mechanism located between the armature and the wedge-shaped wedge, rigidly connected to the hollow body, an adapter connected to the guide pipe, in the lower part of which radial holes are made connecting it with an annular space formed between the hollow body and the guide tube. In this case, the adapter is connected to a conveying tube in which a separating insert is provided, provided with conical elastic collars, as well as rigid supports cooperating with the cuffs and forming upper and lower annular chambers, hydraulically connected to each other, in the conveying tube, adapter and guide pipe.

EFFECT: technical result consists in increasing the efficiency, reliability and quality of work when installing casing filters in the perforation channels-waveguides.

1 cl, 5 dwg