METHOD FOR MANUFACTURE OF FILTER Russian patent published in 2021 - IPC E21B43/08 

FIELD: filters.

SUBSTANCE: invention relates to the area of apparatuses for filtering a borehole fluid during extraction of minerals from a borehole. The typical granulometric composition of solid inclusions in the fluid wherein the filter will be used for filtering said composition is preliminarily determined experimentally. For pressing equipment, as well as for extended preforms made of fluid-resistant materials, the pressing conditions are experimentally determined to produce filtering elements capable of retaining a strictly determined part of solid inclusions present in the filtered fluid. The form configured to form a filtering element capable of being pieced together with other filtering elements is filled with extended preforms. A filter is formed by connecting the premade filter elements. The area of connection of the filtering elements is configured to hold a strictly determined part of solid inclusions of a predetermined size.

EFFECT: controlled filtration fineness is provided.

7 cl