FIELD: oil and gas industry.
SUBSTANCE: invention relates to oil industry and can be used on new horizontal wells and on reconstructed wells by cutting off lateral shaft with horizontal end. Oil and water inflow selector comprises a cylindrical housing with a row of through filtration orifices, a thick-wall bushing with an eccentric through passage channel. Sleeve comprises at least one radial cylindrical chamber with lockable circulation hole for shut-off ball. Ball is made with density lower than density of water, but higher than oil density.
EFFECT: prevention of penetration of underlying formation water into well cavity.
1 cl, 3 dwg
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