FIELD: oil and gas industry.
SUBSTANCE: method may be used in oil and gas industry, in particular, to plug cracks in well zone during removal of hydraulic rupture fluid, and also various cracks and branches in casing. Substance of invention: according to the method for formation of insulating plug, a trap is installed upstream the area of plug formation to prevent passage of fibres and to assist in formation of fibre clusters. Liquid with dispersed fibres is injected into well, periodically the trap is opened, releasing fibre clusters and providing for their free flowing towards the area of plug formation.
EFFECT: invention provides for improved efficiency of cracks insulation in well zone with simultaneous reduction of fibres concentration and prevention of pumps and other equipment clogging.
5 cl, 2 dwg
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