FILTERING UNIT FOR DELIVERY HOLE Russian patent published in 1996 - IPC

FIELD: gas and petroleum industry. SUBSTANCE: device us used in surface equipment and has filter with inlet and outlet part and pump-compressor tubes which are inserted in hole and hydraulically linked with filter. Also provided is delivery pipeline with inlet, distribution and mouth gate valves which are connected with filter inlet part through inlet gate valve, and with outlet part of filter they are connected through distribution gate valve. They are coupled with pump-compressor tubes through distribution and mouth gate valves. Delivery pipeline between inlet gate valve and inlet part of filter is provided with drain pipeline and gate valve. Filter has solid housing and screens installed at filter ends. Inner space between them is filled with filtering material. EFFECT: simplified design and servicing. 1 dwg