FIELD: oil and gas production.
SUBSTANCE: procedures and device are designed for perforating formation in bore of well without perforating casing of well bore. The procedure and device consist of a perforating device positioned outside of the casing without perforating the casing. An internal part of the perforating device functions as a tract for fluid medium flow between the casing and formation after perforation. A valve in the casing selectively opens and closes the flow tract.
EFFECT: improvement of procedure and devices for selective control of communication with one or several formations.
36 cl, 4 dwg
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