FIELD: oil industry.
SUBSTANCE: group of inventions relates to oil production from wells using electric pumps. Each pump section (1) has a central axis and comprises at least two pump stages (7). Pump stage (7) has a central axis and comprises motor (5) and one or more pump links (6). Pump includes outer housing (8), covering one or more inner housings (9). Outer housing (8) forms a cover around pump section (1) and has diameter larger than inner housings (9). Inner housing (9) forms a cover around at least one of at least two pump stages (7). Central axis of pump section (1) is shifted relative to central axis of pump stages (7) to form annular space (2) between outer housing (8) and inner housing (9).
EFFECT: group of inventions is aimed at simplifying maintenance and optimisation of its operation.
15 cl, 12 dwg
