DEVICE FOR CLEANING WELLS FROM PLUGS Russian patent published in 2025 - IPC E21B37/00 

FIELD: obtaining oil and gas from wells.

SUBSTANCE: invention relates to oil and gas industry, namely to devices for cleaning wells from various plugs from deposits. Device for cleaning wells from plug formation includes a housing unit, a screw with a spring, on which a vortex cutter is installed, which is made with possibility of rotation relative to the screw. One end of the screw is equipped with an internal cutter. Spring is made with possibility to move apart housing unit and vortex cutter. Flow swirler is installed on one side of the housing unit. Screw with spring is installed on the other side of the housing unit. Housing unit, screw and inner mill are made full-bore for fluid flow through them. Screw is installed in the housing unit through the internal bearing and is made with possibility of rotation relative to the housing unit and the vortex cutter. Between the upper end of the spring and the housing unit there is a thrust bearing to reduce friction of the spring. Upper end of the spring, which rests against the thrust bearing, is free and movable.

EFFECT: increased productivity due to the presence of a full-bore channel, increased strength and reliability of the device design.

4 cl, 1 dwg