DEVICE FOR DUAL EXPLOITATION OF TWO LAYERS OF WELLS Russian patent published in 2017 - IPC E21B43/14 

FIELD: oil and gas industry.

SUBSTANCE: invention falls into the area of the oil and gas producing industry and may be applied for the dual exploitation of two layers in the oilfield wells. The device for the dual exploitation of two layers of the well includes a control valve with a hydraulic system, which includes the plunger pump that is kinematically associated with the spindle of the electric motor and hydraulically with the cylinder of the valve action. The cylinder includes a chassis with decks and a spring loaded piston, which rod is hingedly linked with a cut-off element body, performed in the form of the valve. The plunger pump is located in the balancing vessel, filled with the operating fluid. The balancing diaphragm vessel is pointed along the chassis axis. At this, its above-diaphragm part is linked by the channel in the chassis wall with the annular space, and the under-diaphragm cavity - with the inlet of the plunger pump. The spring loaded piston of the cylinder and the cut-off element (valve) at the time of closing (opening) of the control valve form the differential piston, which has the spring loaded piston as a larger part, and the cut-off element - as a smaller one.

EFFECT: invention provides the reduction of the central load to the spindle of the electric motor of the device in the conditions of high bottom hole pressures in the well upon controlling the control valve from the surface in a position of "closed (open)".

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