FIELD: methods or apparatus for obtaining oil, gas or other materials from wells, particularly devices for submersed pump installation in water injection bore, which supplies water to well in reservoir pressure maintenance system.
SUBSTANCE: device comprises intermediate column installed in bore and provided with electric-centrifugal pump to supply water in one or several wells. Intermediate column is air-tight and may provide bore casing pipe filling with oil. Intermediate column additionally has inner sectional pipe, which is adapted to suspend electric-centrifugal pump below ground freezing and demounting level. Sectional pipe end is provided with teeth and spider-like partition having inclined blades.
EFFECT: extended capabilities of standard pump usage, improved bore casing pipe protection against corrosion, provision of additional electric drive cooling, simplified pump removal from bore for pump repair.
1 dwg
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