PLANT FOR PERIODIC SEPARATE PRODUCTION OF OIL FROM TWO BEDS Russian patent published in 2012 - IPC E21B43/14 E21B34/10 

FIELD: oil and gas industry.

SUBSTANCE: plant includes electric centrifugal pump, packers, connection pipe of stepped shape and intermediate pipe. Packers are intended for installation in the well shaft and separation of upper oil bed from lower one. Connection pipe is installed between packers and equipped with holes for supply to it of oil from upper bed. Lower end of intermediate pipe is equipped with plunger enclosed in cylinder of smaller diameter of stepped connection pipe. Upper end of intermediate pipe is attached to the pump housing and equipped with flow switch. Oil flow switch includes spring-loaded piston with annular groove, two oil outlet channels from upper and lower beds respectively to the well and above-piston cavity. The latter is interconnected with compressed gas supply tube from the well mouth. Additional plunger of stepped shape, which is provided with holes for channels of the flow switch, is included in cylinder of larger diameter. Upper end surface of additional plunger is attached to the pump housing.

EFFECT: providing the required parameters of reliability and efficiency of the plant operation.

2 dwg