GUIDE SHOE FOR INSTALLATION OF SHAPED SHUTTER IN WELL Russian patent published in 2019 - IPC E21B29/10 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil and gas industry, in particular to devices for installation of shaped shutters in isolation of complication zones. Device includes cylindrical part and guide part with oblique cut, side hole with nozzle for passage of liquid from cut side. Cylindrical and guide parts are interconnected by hinged joint allowing limited deflection of guide part relative to device axis, wherein valve seat is installed in its cylindrical part. Guide part is equipped with longitudinal hole extending to oblique cut of smaller diameter than diameter of side hole, bushing valve for free passage of liquid in transport position is fixed inside profile pipe above guide shoe on pins, fixed inside cavities, is equipped with upper and lower rods, rubber cuff in upper part, grooves with sealing rings and spring retainer located on bush case below cuff for interaction with sealing surfaces and annular recess made in valve seat body after valve sleeve release when straightening profile shutter. Cylindrical and guide parts are connected by semi-axles, and inner cavity is sealed by elastic sleeve fixed tightly in cylindrical and guide parts with cone bushes. Guide shoe from above is equipped with end projections for interaction with protrusions of catcher for turn-up, below which spring retainer is installed, connecting and retaining shoe on fishing tool when it is removed from well.

EFFECT: simplified method of delivery and installation of profiled shutter and extraction of shoe after its installation in well, improved quality and reliability of isolation of zones of complications, especially in horizontal and ST multi-lateral wells.

1 cl, 6 dwg