FIELD: mining industry, in particular, operation of oil and water-intake wells, possible use for cleaning filters from mudding precipitations, preventing influx of useful product into well.
SUBSTANCE: device includes casing column with filter, operation column and immersed pump. In accordance to invention, operation column is composed of water-lifting pipe, branch pipe and body rigidly connected to it. Water-lifting pipe is engaged with branch pipe by means of a barrel. Positioned in the barrel is rotation unit with thrust bearing to provide for possible rotation of branch pipe with the body relatively to water-lifting pipe. Mounted on the body at various levels are cavitation devices, positioned at angles of 18-22° relatively to generatrix of body and at angles of 45-50° relatively to horizontal plane. Immersed pump is located on the tail of operation column.
EFFECT: increased productiveness of device, expanded functional capabilities, increased degree of cavitation and hydrodynamic effect on mudded surface of filter.
2 cl, 1 dwg
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