DOWNHOLE RIG FOR SIMULTANEOUS SEPARATE OPERATION OF TWO FORMATIONS Russian patent published in 2021 - IPC E21B43/14 

FIELD: oil industry.

SUBSTANCE: invention relates to the oil industry, namely to pumping units for oil production, and can be used with simultaneous separate exploitation of reservoirs. The downhole installation for the simultaneous separate operation of two layers includes a packer installed between the layers, an electric centrifugal pump with a control cable, pumping the products of the lower layer through the jet device located above the packer and consisting of a central nozzle body, inlets with check valves in the form of check valves. The electric centrifugal pump is located below the packer. Outside the body of the jet apparatus, along the perimeter, opposite the nozzle, an electromagnet is installed, connected to one of the cores of the control cable. The nozzle is equipped with radial holes, closed from the outside by a spring-loaded valve made of a soft magnetic material or a core wound from a soft magnetic material and made with the possibility of longitudinal movement and compression of the spring with the opening of the radial holes under the action of a magnetic field generated by an electromagnet.

EFFECT: proposed downhole installation for the simultaneous separate operation of two formations allows separate exploration and treatment of formations with reagents due to a controlled valve on the nozzle, simplify installation in the well and expand functionality by using only one packer and operating formations with any formation pressure and distance between them.

1 cl, 2 dwg