FIELD: oil and gas industry.
SUBSTANCE: group of inventions is referred to oil and gas producing industry, in particular, to formation of gravel filters in branch hole. The method includes completion of interface node and connection of interface node with completion, deployment of downhole equipment in completion, completion of interface node by means of downhole equipment for performance of gravel packing operation through engagement of the equipment with polished receiving connector, ball movement to the downhole equipment and usage of ball in order to direct flow of gravel slurry through a frame of transit port to a guide unit and through bypass channel until its drainage. Hydrostatic pressure is maintained in uncased branch hole by means of downhole equipment near the wall of branch hole during operation of gravel packing in order to preserve integrity of the branch hole; pressure is released upon completion of gravel packing operation.
EFFECT: simplified operation of the hole treatment before ending the required gravel packing.
18 cl, 8 dwg
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