FIELD: methods for stimulating production, particularly for initiating crack zone sealing during fluid or hydraulic fracture performing.
SUBSTANCE: device comprises body with channel, flexible sealing members installed on the body, piston couple with sealing rings arranged between the flexible sealing members and fixing nut. Working chamber of piston couple communicates with the channel and has cylinder with radial orifice. The radial orifice communicates with working chamber of piston couple during well packing with flexible sealing members and additional compression of above members under hydraulic fracturing pressure to provide self-sealing of isolated well section.
EFFECT: increased efficiency due to simplified structure.
2 dwg
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