FIELD: oil and gas production industry, particularly methods or apparatus for obtaining oil, gas, water and other materials from multizone wells.
SUBSTANCE: device comprises packer with flow blocking means formed as hollow body with orifices located over and under sealing member of the packer. Pipe is arranged inside the body so that the pipe is concentric to body axis. Lower pipe end is connected to the body, upper part thereof cooperates with annular bush over outer pipe surface. Annular bush may move in axial direction and is provided with annular sealing means and with shear pins, which fixes the bush inside the body. After pin cutting annular bush moves downwards and closes body orifices located over sealing packer member to cut-off flow leaving orifices below sealing packer member.
EFFECT: extended water-free oil well operation period, increased oil recovery and reduced oil production costs due to elimination of water lifting charges and prevention of well bore zone contamination.
4 dwg
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SU1776770A1 |
