METHOD FOR CREATION AND DEVICE OF WELL SAND-RESISTANT FILTER FROM WIRE-PERMEABLE MATERIAL Russian patent published in 2020 - IPC E21B43/08 E21B43/04 

FIELD: oil and gas industry.

SUBSTANCE: group of inventions relates to the oil and gas industry and can be used in the field of sand ingress control in productive oil and water wells. Proposed method comprises opening productive stratum with perforated casing string, hydraulic sealing at necessity of loose rocks of bottomhole zone with scum of artificial gravel cavern and packing of filtration material in well. Perforated casing string is additionally equipped with a seat stop, the saddle support is attached to the perforated pipe below the zone of perforation holes and is connected to the pipe-dirty accumulator which is placed in the sump of the well. In addition to the perforated column, additionally made filtering shell expands FSE with filtering elements from wire-permeable material, base of filtering cartridge is fixed in seat stop, disengaging mechanism is disconnected from gripping device of movable bulkhead. Under action of gravitational force, movable unloading is moved along axis of central branch pipe of filtering shell, load is created on elastic-porous modules of filter elements, deformed them, compacting under action of Poisson force, pressing side surfaces to inner wall of perforated column.

EFFECT: increasing the maintenance-free period of the submersible pumping equipment, reducing the number of operations for cleaning the filter, prolonging the period of initial productivity of fluid supply through the filter elements to the pumping equipment.

3 cl, 3 dwg