Offshore well in the Republic of Trinidad and Tobago, the Caribbean
A successful conversion from the Gas Lift to Ultra-High-Speed ESP (UHS ESP™) has been conducted at the offshore well, located in Trinidad and Tobago in the Caribbean region. The project was designed to improve well profitability by eliminating costs associated with compressor shutdowns, oil losses, and gas prices.
The client’s field is in Trinidad and Tobago. The offshore reservoir is at 3,910 ft TVD (1,192 m TVD), the operated well is completed with a 7 5/8” API Casing, the oil API is 27.3, and the water cut within 80%. The gas content at pump intake was evaluated at the level above 30%.
Lex was challenged to conduct the artificial lift method conversion from a Gas Lift to an Electric Submersible Pump in the well with undefined inflow.
The reasons behind this request were:
Following research and detailed analysis of the well conditions, we recommended installing the UHS ESP™ system, with a nameplate speed of 10,000 rpm. We proposed installing the wide-range UHS-1000 system designed for NP flow range from 505 to 1385 bblpd, with BEP at 1000 bblpd (80-220 m3/d with 159 m3/d at BEP), with integrated advanced gas handling device and downhole gauge Hunter-X.
Conversion from Gas Lift to UHS ESP™ is considered successful
600 days of stable operation
The dependence from gas prices and compressor is eliminated
Compressor-based shutdowns are eliminated
Free gas content at the pump intake over 30%
Total cost of ownership has been reduced by 26%
In April 2020, the Lex field service crew travelled to Trinidad and Tobago to complete pre-installation checks, start-up, commissioning, on-site daily monitoring, and equipment performance reviews.
Based on the Total Cost of Ownership savings valuation of 26%, the conversion has been considered successful. UHS ESP™ stabilized the production and eliminated unexpected shutdowns associated with the gas compressor.
This project has confirmed the feasibility of UHS ESP™ for the conversion from Gas Lift.
We design, manufacture, market, and operate equipment in compliance with recognized industry API, ISO and CE standards. Lex is an active member of API ESP Recommended Practice review committee
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Our engineers have carried out over 500 ESP systems installations at our clients’ oil fields in Europe, Siberia, Middle Africa, Southeast Asia, and North America.
