FIELD: machine building.
SUBSTANCE: invention relates to machine building and can be used in the manufacture of downhole electric centrifugal pumps for oil production. Impeller and/or directing device of the submerged centrifugal pump stage is made of a flexible material, and channels filled with liquid or gas under pressure are made inside.
EFFECT: invention is aimed at providing a downhole centrifugal pump with working wheels and guide devices with a larger diameter than the borehole diameter to expand the working range, as well as simplifying the design and reducing cost.
1 cl, 2 dwg
| Title | Year | Author | Number |
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RU2628470C1 |
