Lex The ESP with a jet pump to improve production in gassy wells

ESP with Jet Pump (Jet ESP)

To improve production in gassy wells, we designed the ESP with a jet pump (Jet ESP). The Jet ESP stabilizes the pump operation and increases the drawdown by reducing the bottom hole pressure. A jet pump and UHS ESP™ are being installed in a single completion string and are very effective in wells with high GOR, installed packer or in case of surface check valve failure.

ESP with Jet Pump Advantages


In gassy wells, gas often accumulates behind the annulus and increases the uplift pressure at the bottom. This can be caused by a faulty wellhead check valve, use of a packer or high line pressures at remote fields. As a result, the drawdown and well productivity reduces significantly.

Jet ESP artificial lift system combines Ultra-High-Speed ESP (UHS ESPTM) and Jet Pump in a single completion string. 

The jet pump is in the well tubing above fluid level. Jet pump nozzle is hydraulically connected to ESP discharge through the well tubing, while jet pump intake is open to the well annulus.

UHS ESPTM provides power fluid to the jet pump, causing a drop in pressure. Gas from the annulus then enters the mixing chamber, forming a mixture with the produced fluid, forcing the mixture straight up to the wellhead. The reduced annulus pressure provides the reduction of bottom-hole pressure and increases drawdown resulting in a production gain.


  • Failure to achieve the potential of well productivity;
  • Remote locations;
  • Offshore fields;
  • ESP configurations under packer.

Application limits

  • Min casing size 5.5″ (139.7 mm);
  • Max sand 2,000 ppm (2,000 mg/l);
  • Max free gas 75%;
  • Max BHST 302 °F (150 °C).
ESP with Jet Pump


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    Artificial lift methods are used to operate most of the wells around the world. We design, improve, manufacture, supply, and service advanced artificial lift equipment for any downhole environment. The high quality and reliability of Lex technologies and equipment are assured by our compliance with the requirements of API and NACE / ISO industry standards.