| 摘要 |
FIELD: oil-and-gas industry.SUBSTANCE: device comprises downhole electric pump with power cable, pipe string with at least one packer located in well above the pump intake module. Pipe tubing comprises bypass system composed of two opposite-flow couplings arranged upstream and downstream of said packer and pipeline between said couplings. Said couplings have eccentric channels communicating pipe tubing cavities with pump outlet and central and radial channels that make a hydraulic channel with pipeline. Hydraulic channel communicates or cuts out well above and under packer via control valve fitted in locating seat of top coupling central channel. Bypass system is equipped with electric drive of reciprocation of control valve going in the pipe tubing. In compliance with first version, said control valve is equipped with adjusting screw articulated with the nut fitted in top coupling central channel and drive by electric drive via extension coupling at engagement of coupling with drive housing via toothed cam at their end surfaces. In compliance with second version, this control valve has sliding nut with ledges fitted in top coupling central channel slots for reciprocation relative to locating seat to interact with the thread of adjusting screw fitted in thrust bearing on coupling top side.EFFECT: comprehensive control over formation fluid withdrawal rate.8 cl, 4 dwg |
