FIELD: pumps.
SUBSTANCE: invention relates to the installation of an electric submersible gear pump. Gear pump 4 is assembled from one or more pumping pair couples with chevron, spur, two helical gears with opposite inclination, involute engagement or Novikov teeth engagement, resting on a thrust washer and enclosed in one or more housing-sections 8, having a profiled suction channel to each pumping pair couples connecting the annulus with the formation fluid through a filter. The discharge channels are connected to the collector of body-section 8 and the collector of pump 4, which communicates with the pump and compressor pipes of the suspension. Between electric motor 2 and pump 4 there is chamber of seals 3 with intermediate shaft 11 on sliding supports with thrust bearing 12, at the ends of which there are two seals 13 of the contact, contact-slot or slot type with fixed or floating rings, to which copper tube 14 is connected that makes it possible to maintain the pressure inside higher than behind the housing and above the pump suction pressure by 0.03-0.05 MPa.
EFFECT: invention is aimed at improving the reliable and long-term operation of the installation.
3 cl, 4 dwg
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