- Maximum drawdown during gas-lift operation;
- No risk of electrical components failure;
- Tolerance to harsh conditions and unstable inflow;
Over time, while intensive field development, the operating conditions become harsh expectedly: wells get water-flooded, reservoir and bottom-hole pressures may decrease if there is no reservoir pressure maintenance system, or it is ineffective. These complications cause the gas-lift wells’ production slowdown.
To address these issues wells, Lex engineers developed the Turbox gaslift pump. The system uses the existing gas-lift infrastructure: a compressor injecting oil or natural hydrocarbon gas.
Turbox Gaslift System is an upgraded gaslift technology, a combination of Ultra-High-Speed ESP and gas turbine instead of a motor. Gas is injected into annulus, entering the gas turbine’s stages, creating torque on its shaft and driving a centrifugal pump. Gaslift valve on top of the completion is optional but required on case-by-case equipment selection. Rigless deployment is available either with slick line or coil tubing.
Turbox avoids electric power in the well and gains production due to 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 gas-lift 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.