FIELD: production of hydrocarbon liquid media from underground formations; oil-well bearings.
SUBSTANCE: proposed pumping system contains submersible pump with shaft and great number of stages, each including impeller installed on shaft and diffuser and ceramic bearings placed between shaft and diffusers. Said bearings are self-lubricating ones resistive to abrasive wear. To protect bearings in multiphase ambient media ceramic bearings, made self-lubricating and resistive to abrasive wear, contain silicon carbide impregnated with graphite for use in submersible pump. Said bearings are installed between shaft and great number of diffusers of submersible pump.
EFFECT: provision of oil-well bearings which can be operated in media under poor or insufficient lubrication.
5 cl, 3 dwg
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