- Maximum drawdown during gas-lift operation;
- No risk of electrical components failure;
- Tolerance to harsh conditions and unstable inflow;
Over time, with intensive field development, well conditions can deteriorate; there’s a risk of flooding and reservoir and bottom-hole pressures may decrease if there are no or ineffective reservoir pressure maintenance systems in place. These complications can lead to motor operation problems when running under part-load, such as overheating and breakdown.
To address these issues in gas-lift wells, Lex engineers developed the Turbox gaslift system. The system uses the existing gaslift infrastructure – a compressor injecting oil or natural hydrocarbon gas.
The Turbox Gaslift System is an upgraded and modernized gaslift that uses a combination of our UHS ESPTM and turbines instead of a motor. Gas is injected into annulus, entering the gas turbine’s stages, creating torque in its shaft and driving a centrifugal pump. A gas lift valve at the top of the wellhead assembly is optional but may be required when selecting equipment on a case-by-case basis. Rigless deployment is available either with a slick line or coil tubing.
Turbox technology avoids the use of electricity in the well, improves pumping efficiency and gains production with Lex UHS ESPTM with an operating speed up to 15,000 rpm. The technology also holds the required drawdown against the minimum gas injection pressure.
- Failure to achieve the potential of well productivity by gaslift operation;
- Limitation on gaslift injection pressure;
- Limited energy supply;
- Harsh climates, offshore fields;
- Geothermal wells (ambient temperatures up to 550 °F (288 °C));
- High sand content up to 2,000 ppm (2,000 mg/l);
- Corrosive environments (SS class materials);
- Highly deviated wells.