PUMPING UNIT FOR SIMULTANEOUS-SEPARATE OPERATION OF TWO RESERVOIRS IN WELL Russian patent published in 2010 - IPC E21B43/14 

FIELD: oil and gas production.

SUBSTANCE: pumping unit for simultaneous-separate operation of two reservoirs in well comprises flow column, stem or hollow stem, main packer, tail with the main channel, inlet of which is connected to below-packer space, and two pumps, upper of which is arranged as stem, and lower one - as electric submersible one. Inlet of plunger pump is communicated with above-packer space. Electric submersible pump is equipped with electric motor, cable and jacket, covering only electric motor and equipped with unit of cable sealing, which is arranged in inner module of pump. Jacket is connected to tail. For separate lifting of reservoir products, discharge of electric submersible pump is communicated to flow column, and of plunger one - to hollow stem. Additional packet is installed above upper reservoir. Tail is equipped with additional channel, communicating inlet of electric submersible pump with packer side, and outlet of the main channel is communicated to above-packer space.

EFFECT: possibility to operate upper reservoir by electric submersible pump, and lower one - by sucker-rod pump.

1 dwg