FIELD: oil industry.
SUBSTANCE: facility of downhole centrifugal pump contains of downhole electric pump aggregate, which combines electric motor with hydroprotection, pump and cable line, lowered into the well on lifting oil-well tubing - LWT, entry facility, controlling station and transformer. At that, electrode is lowered in well at the depth of beginning of asphaltic hydroparaffine deposits, made as column of pump rods, fitted with centring skids with dielectric qualities, providing electric isolation of pump rods column LWT and stuffing box, which provides electrical isolation of rod column from wellhead assembly. In upper - superstructure part pump rod column is hooked up to ground power unit of DC current, which second electrode is hooked up to wellhead.
EFFECT: effectiveness improvement of oil lifting in complex geological-and-technical conditions, deviated wells and while intense hydroparaffine deposits.
1 dwg
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