SUBMERSIBLE PUMP UNIT ON LOADING CABLE Russian patent published in 2021 - IPC F04D13/10 F04D31/00 

FIELD: oil industry.

SUBSTANCE: invention relates to oil-field equipment and can be used for oil production, complicated by a high gas ratio. A submersible pumping unit on a load-carrying cable is installed inside the tubing. The installation consists of an extension cable, an upper hydraulic protection, an electric motor, a lower hydraulic protection, a flow-out module, an inverted-type electric centrifugal pump, sealing units and a double gas separator with an inlet grate in the lower part and outlet openings in the upper part. There is a cutter with radial holes above the level of the pumped liquid at the end of the column. The sealing unit is equipped with sealing collars that overlap the string and act as a packer device. The double gas separator includes the upper and lower gas separators and is fixed in the cutter. The inlet grid of the gas separator is located below the cutter, the discharge openings of the upper gas separator are located above the level of the well fluid, opposite the radial openings of the cutter.

EFFECT: invention is aimed at ensuring uninterrupted, reliable operation of the installation due to the removal of the separated gas into the annular space.

1 cl, 2 dwg