FIELD: oil and gas industry.
SUBSTANCE: device includes a housing with an inlet connection pipe and cavitators the nozzles of which are directed to the treated surface of wells, a rotor with an impeller and two screws. The housing is made of upper and lower parts tightly attached to each other so that an inner cavity is formed; the inlet connection pipe is located on the central axis in the upper part of the housing, inside which there fixed is the first screw at the inlet of the inner cavity so that swirling of working liquid is provided. The second screw is installed inside the rotor along the central axis so that rotor rotation is provided. Opposite ends of the screws are cone-shaped. In the rotor there are side channels. Cavitators are installed in the lower part of the housing; their axes are located in one plane with axes of the side rotor channels so that hydrodynamic pulsation of the working liquid is provided. The inlet connection pipe has a possibility of being moved along the central axis so that adjustment of frequency and amplitude of pulsations of the working liquid flows leaving the cavitators is provided.
EFFECT: improving efficiency and productivity at treatment of productive formations and strainers of wells.
2 cl, 4 dwg
