HYDRAULIC PACKER Russian patent published in 2023 - IPC E21B33/127 

FIELD: construction; oil and gas industries.

SUBSTANCE: invention relates in particular to a hydraulic packer. The hydraulic packer consists of jointed sealing and injection modules for slurry outlet. The sealing module consists of two end sections and one working section placed inside an elastic membrane, which is fixed by fixating and clamping fittings to the working section, on the surface of which there are conical runs directed towards the transverse filling holes. The injection module is made in the form of a hollow cylinder with an internal thread at the ends and a transverse hole for the slurry to exit. The working sections of the sealing modules have different inner diameters and are located in such a way that the inner diameter of the working section of each sealing module located below is larger than that of the working section of the sealing module located above. The transverse filling holes in the working sections of the hydraulic packer are made along a cylindrical helix with the same angle of rotation relative to the central axis and the same spacing. Hemispherical holders are made at the ends of the working sections of the sealing modules in the place where the elastic membranes are fixed with fixation fittings.

EFFECT: increasing the airtightness of the overlapped intra-pipe space of the injector pipe or casing string during operation of the hydraulic packer.

1 cl, 9 dwg