PLANT FOR FORCING LIQUID FROM WATER BED OF WELL INTO OIL BED Russian patent published in 2006 - IPC E21B43/14 

FIELD: equipment for cyclic feeding of liquid into oil bed during water saturation or when forcing various reagents into it.

SUBSTANCE: device contains packer, string of pipes with forcing and sucking valves, positioned below and above the packer, pump. In accordance to invention, device may be pressurized on the mouth of well of behind-column space of well. Pump is made submersible in form of cylinder with piston, which is mounted as part of composition of string of pipes above sucking and forcing valves. Sucking valve is positioned in water bed zone, and forcing valve - in zone of oil bed with possible sucking of liquid from water bed through behind-column space until piston reaches extreme top position while its reciprocal movements are limited relatively to cylinder, also possible is forcing of liquid from cylinder into behind-column space below the packer into oil bed, until piston reaches extreme bottom position. Column of pumping bars on the mouth of well is equipped with sensor of its load with possible disabling and enabling of pump drive depending of how full behind-column space is with liquid from water bed.

EFFECT: simplified construction, increased efficiency of operation, decreased losses of consumed energy.

2 dwg