FIELD: oil industry. SUBSTANCE: connected to delivery branch pipe of centrifugal pump is ejector hydraulically coupled with separator hard particles collecting chamber arranged at intake side of pump. Submersible electric motor is installed in delivery branch pipe above pump with guaranteed radial clearance. Delivery branch pipe in its upper portion is connected with casing string and is provided with recess for arrangement of current carrying coupler of electric motor and its sealing unit. Ejector is placed between pump and electric motor. Tangential slots to let well liquid come out are made in delivery branch pipe above ejector. liquid flow turbulizers are installed in clearance between electric motor frame and walls of branch pipe. EFFECT: enlarged operating capabilities. 2 cl, 4 dwg
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