FILTERING MODULE (VERSIONS) Russian patent published in 2019 - IPC E21B43/08 

FIELD: mining.

SUBSTANCE: group of inventions relates to extraction of liquid and gaseous media from boreholes, in particular, to designs of borehole filters. Filtering module comprises a perforated housing with threaded ends, outside of which there is coaxially installed and fixed at least one filter element consisting of bearing frame, filtering screen, which comprises at least two layers, a protective frame and drain layers made outside and inside the filter screen and between its layers. Filtering screen is in a resilient-stretched state.

EFFECT: improving efficiency and reliability of filtering module operation due to possibility of self-cleaning during operation.

33 cl, 10 dwg