SUBMERGED PUMPING UNIT Russian patent published in 2008 - IPC F04D13/10 E21B43/38 

FIELD: engines and pumps.

SUBSTANCE: invention relates to petroleum industry and can be used for production of petroleum with petroleum gas. The submerged pumping unit incorporates submerged motor and pump, a hydraulic protection and a gas separator-disperser. The latter comprises a shaft, inlet holes, a line of separated gas discharge into behind-the-pipe space, a line to discharge a mix with residual gas content, a disperser and a line to discharge dispersed mixture into the submerged pump. The housing accommodates a prescrew, a cavity-forming bucket wheel and separation drum with ribs. The cavity-forming bucket wheel outer edge angle varies from 100° to 110°. The disperser incorporates the screw fitted on the shaft and a fixed ring with inner rubs, the said ring enveloping the screw from outside and the ring inner ribs being parallel to the screw axis.

EFFECT: higher efficiency and wider range of application provided by the optimum arrangement of the cavity-forming wheel and disperser flow-through sections.

5 cl, 6 dwg