SELF-CLEANING WELL FILTER Russian patent published in 2016 - IPC E21B43/08 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil and gas industry, particularly to well filters. Device includes two nipples and at least one filter element arranged between limiting rings, made of wire, wound on longitudinal elements along a spiral. Both nipples are welded to transition rings. All filter elements are configured for rotation due to installation inside each filter element at least one turbine.

EFFECT: higher filter capacity, reduced weight, higher efficiency of cleaning filter.

6 cl, 10 dwg