PUMP DEVICE FOR SIMULTANEOUS SEPARATE OPERATION OF TWO BEDS IN A WELL Russian patent published in 2007 - IPC E21B43/14 F04B47/00 

FIELD: oil extractive industry, in particular, well pump devices.

SUBSTANCE: device contains a column of lifting pipes, cable, packer, tail and two separate pumps for draining product of beds, which are encased in upper and lower casings, while the pump for draining product of lower bed is made electric and submersible. In accordance to invention, lower casing of electric submersible pump is provided with cable pressurization unit and is connected from below to sub-packer space through the tail. Tail above the packer is equipped with overflow device capable of providing hydraulic connection between above-packer space of well and its sub-packer space through the tail when well reaches pressure of activation of overflow device. Outlet of electric submersible pump is connected to upper casing. From above the casing is connected to column of lifting pipes and is provided with side channel. Upper pump is a sucker-rod pump, rod column of which is made hollow and is hermetically connected to plunger of sucker-rod pump. Inlet of this pump via side channel is connected to above-packer space.

EFFECT: possible separate measurement of debit of each bed and separate field collection of product of beds when necessary, possible inspection of each bed during operation without extraction of pump and shutdown of each bed when necessary.

3 cl, 1 dwg