METHOD FOR FILTERING UNIT ASSEMBLAGE Russian patent published in 2006 - IPC E21B43/08 B01D25/00 

FIELD: oil and gas industry, particularly to perform gas-dynamic well survey.

SUBSTANCE: method involves attaching filtering cylinders to filtering pack frame between swirler and end thereof by connecting fluoroplastic filtering cylinders one to another, to swirler and to filtering pack end with rings having annular grooves cut around ring perimeters, wherein the grooves have trapezoid cross-sections and adapted to receive filtering cylinder edges, each extreme ring is provided with one groove formed in one ring end and is air-tightly connected to swirler of filtering pack end by opposite ring end, central rings have two grooves located on opposite ends thereof; connecting aerodynamic shroud to filtering unit and compressing the ready filtering unit with fastening bolt to provide firm air-tight connection between rings and filtering cylinders.

EFFECT: increased filtering unit strength and service life due to improved gas filtration and reduced labor inputs for filtering unit assemblage.

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