| 摘要 |
FIELD: oil producing industry, particularly, wells drilling-in several producing formations. SUBSTANCE: device includes casing string with mounting sleeve located above producing formation. Run into casing string is tubing string with plunger having seal and engageable with mounting sleeve. Additional mounting sleeves are located in casing string, in intervals between producing formations and below. Tubing string is provided with additional plungers. They are spaced from one another at a distance equaling that of mounting sleeves in casing string and are engageable with respective mounting sleeves. Part of interval of tubing string between plungers is perforated. EFFECT: extended functional potentialities of well due to perfection of its design and reduced material expenditures due to simplification of repair and isolation jobs. 1 dwg
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