SYSTEM FOR CLEANING WELL AND BOREHOLE SPACE Russian patent published in 2024 - IPC E21B37/00 

FIELD: mining.

SUBSTANCE: invention relates to oil and gas production from wells and can be used for well cleaning during operation and overhaul. System comprises a destructive element connected to the container through a check valve, a shut-off valve installed above the container, a collar packer, above which a beating unit is installed. Breaking element is made in the form of a pipe section with a toothed edge; the cutoff valve contains a hollow housing with a hollow rod with radial holes installed in it. Packer is cup-type and includes a hollow housing, in the upper part of which two elastic cups are installed in different directions; at that, the upper cup is installed with its edge upwards, and the lower one – with its edge downwards. Outside on the housing under the lower cup there is an annular groove in which the filter is installed with a gap relative to the housing wall. In the wall of the packer housing above the annular groove there is at least one longitudinal channel interconnected with a gap and equipped with a check valve. Between the packer and the shut-off valve, a vibroacoustic unit is installed, comprising a hollow housing with flow channels made in its upper and lower parts, fixed blades installed in the housing, a rotor installed in the housing with possibility of rotation, including blades located with an inclination to the axis of rotation, and radial ledges.

EFFECT: efficiency of cleaning the well and the borehole space is increased.

4 cl, 6 dwg