DEVICE FOR DUAL COMPLETION Russian patent published in 2023 - IPC E21B43/14 F04B47/06 

FIELD: oilfield equipment.

SUBSTANCE: used as part of an assembly with an electric centrifugal pump for dual completion in low-pressure wells. A device for dual completion is claimed, characterized in that it consists of a shaft connected to an electric submersible pump (ESP) with a power cable with a cup packing, above which a double-circuit turbopump is located, connected to a tubing. At the same time, the double-circuit pump contains a perforated outer pipe of the outer contour and an impeller or an assembly of impellers mounted on bearings with the possibility of free rotation, located inside the perforated outer pipe, forming an inner contour and equipped with internal and external impellers. In the upper part of the turbopump there is a mixing chamber for connecting the fluid flows passing through the inner and outer circuits.

EFFECT: simplification of the device for dual completion due to the exclusion from the layout of the additional pump and associated surface equipment, including power consumption.

3 cl, 6 dwg