DEVICE FOR PROPORTIONED SUPPLY OF REAGENT INTO WELL Russian patent published in 2024 - IPC E21B37/06 E21B27/00 

FIELD: oil production industry.

SUBSTANCE: used for proportioning chemical reagents into wells during oil production. A device for proportioned supply of a reagent into a well contains a body divided into two cavities by an elastic reservoir installed inside the device body between at least two fasteners. A displacing fluid is located outside the elastic reservoir, and the internal cavity of the elastic reservoir is filled with a liquid chemical reagent and is hydraulically connected to a piston metering pump that supplies the liquid chemical reagent into the well. The piston of the metering pump is mechanically connected to a support in contact with the walls of the well casing. The device body has the ability to move relative to the piston of the metering pump due to deformation of the tubing pipes on which the device is installed in the well. The support is made in the form of an elastic cuff with holes and is fixed relative to the walls of the well casing due to friction forces.

EFFECT: design of the device and its installation in the well are simplified, the reliability of the device and its operation are increased.

1 cl, 1 dwg