- 20% increase in oil production;
- 40% reduction in power consumption (equivalent to nearly 50 million kWh) since 2014;
- 23% increase in equipment runlife;
- The runlife of UHS ESP has reached 15,000 successfully operated cycles in the well with over 2,000 ppm (2,000 mg/l) of sand content;
- 25% reduction in Total Cost of Ownership (TCO) in comparison with competitors.
Fields’ reservoirs are found at 6,900–8,200 ft TVD (2,100–2,500 m TVD). Oil wells are drilled from well pads, ESP friendly deviated along 8,860–11,500 ft MD (2,700-3,500 m MD) and completed with 7″ (177,8 mm) and 6.61″ (168 mm) API Casing. Downhole temperatures are ranging between 176 and 212 °F (80–100 °C).
The following complicating factors stalled to reach the production measures:
- Narrow operating range of existing ESPs;
- Gas content at pump intake is above 60%;
- Sand content is above 1,500 ppm (1,500 mg/l);
- High DLS;
- High power consumption.
After doing research and detailed analysis, we proposed installing several models of Ultra-High-Speed ESPs with a nameplate operating speed of 10,000 rpm:
- Low-flow-rate UHS-200 system designed for NP flow range from 50 to 280 bblpd with 190 bblpd at BEP (from 8 to 45 m3/d with 30 m3/d at BEP);
- Wide-range UHS-500 system designed for NP flow range from 125 to 560 bblpd with 500 bblpd at BEP (from 20 to 90 m3/d with 80 m3/d at BEP);
- Power efficient UHS-600 system designed for NP flow range from 280 to 720 bblpd with 500 bblpd at BEP (from 45 to 115 m3/d with 80 m3/d at BEP).
Upon every phase of technology deployment the client evaluated obtained results. They were found stable and consistent with prior results, allowing to development of a solid economic model.
Since 2016 UHS ESPTM systems are approved for use in group of fields under Lex engineering support and supervision.
We offer a centralized approach to the monthly delivery of equipment for installation and maintenance, due to the compact design of our UHS ESPTM units and minimum on-site preparation requirements. This allows us to avoid additional field workshops as the preparation of equipment can be conducted at a main repair facility and delivered directly to the field being ready for the installation (plug-and-play design).
Our results consistently demonstrate the high potential of Lex UHS ESPTM to optimize production and provide operational advantages in harsh well conditions.
UHS ESPTM advantages vs. standard equipment
- Wide operating range allows you to adapt to changes in inflow whilst maintaining higher efficiency.;
- Reduction in the total length of UHS ESPTMs (by up three times) allowing passage through high DLS wells;
- Improved gas separator efficiency leads operating with 75% gas at the pump intake;
- Reliable operation with sand content up to 2,000 ppm (2,000 mg/l) is possible due to wear-resistant stage materials.
Implementation of Lex Ultra-High-Speed (UHS ESPTM) technology is increasing despite oil prices drop and OPEC+ 2020-2021 restrictions. For today, we installed more than 500 units at offshore and onshore projects worldwide.