FLUSHING TOOL Russian patent published in 2020 - IPC E21B37/00 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil and gas industry, in particular, to flushing of wells from slime and deposits. Tool comprises a housing in which there is a central cavity, channels with nozzles installed in them, communicating with the longitudinal central cavity and including at least one group of radial flushing channels extending radially in the housing perpendicular to its longitudinal axis and located at the same level relative to the longitudinal axis of the housing, at least two groups of inclined flushing channels including first flushing channels and second flushing channels extending at an angle relative to longitudinal axis of housing and located below groups of radial flushing channels, wherein group of first inclined flushing channels is located at an angle β=60–90° relative to group of second inclined flushing channels.

EFFECT: higher efficiency of washing, faster process of washing, simplified design.

3 cl, 4 dwg