FIELD: oil producing industry; submersible multistage centrifugal pumps.
SUBSTANCE: according to invention, magnetic systems are placed in one or several guide-vane assemblies of multistage pump. Said system consists of two ring magnets axially magnetized and placed into non-magnetic shells. Clearance between shells form passage for pumped liquid. Oil pumped by pump is magnetized which considerably decreases rate of deposition of salts and asphalt-resin paraffins on inner surfaces of pump and tubing strings.
EFFECT: enlarged operating capabilities of pumps, increased efficiency of oil producing well.
3 cl, 3 dwg
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