FIELD: electricity.
SUBSTANCE: system contains the centrifugal pump (18) placed in the well, the engine oil vessel (6) placed on surface out of the well and the pipeline (2). The pump (18) contains the engine section (14), the pump section (9) and the protection device section (11). The section (11) is placed between the section (9) and the section (14). The section (11) has the internal volume containing engine oil, and the volume exposed to the fluid medium other than engine oil. The section (14) has the internal volume containing engine oil and is connected to the power supply source on surface. The pipeline (2) hydraulically connects the vessel (6) with the section (11) base for oil supply into it to the location upsteam the engine section (14). Oil is under positive pressure by means of the pressure applied by the pipeline (2).
EFFECT: prevention of harmful effects of engine oil pollution.
19 cl, 1 dwg
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