Republic of the Congo, Central Africa
The project in the Republic of the Congo, Central Africa is the place, where we have conducted one of our most successful optimizations projects. The field has high sand and gas content, unstable inflow and high DLS which all contribute to particularly complex conditions. The target was to increase the run-life of submersible equipment and energy-saving while holding the optimum production level.
70% reduction in power consumption
50% reduction in total cost of ownership
175% increase in equipment runlife (MTBF) (from 246 days to 676 days)
75% shorter equipment length
67% reduction in ESP units required (one UHS ESP replacing three conventional ESPs)
1-hour installation with Plug-and-Play design
Client has been developing the onshore oilfield in the Republic of Congo (Central Africa) since 2007. The reservoir is located at 6,880 ft TVD (2,097 m TVD). Downhole temperature is 216 °F (100 °C). The operated well is completed with 7″ (177,8 mm) API Casing.
The complicating factors:
The previous standard ESP’s MTBF was 246 days and did not provide the required fluid production. For this reason, Client reached out to us to optimize their well operation by:
1) reducing power consumption from huge 39.1 kW*h/m3/day;
2) steadying production rate;
3) increasing the run-life of equipment.
Following a detailed analysis, we proposed installing UHS-600 system designed for an NP flow range of from 280 to 720 bblpd with 500 bblpd at BEP (from 45 to 115 m3/d with 80 m3/d at BEP).
In February 2019 Lex team arrived Congo to perform a pre-installation check, train the local engineering team and conduct an installation of the UHS ESP™.
To mitigate the extreme weather conditions experienced in the Congo, we developed special design of the surface equipment to maintain the temperature of the VSD internal electronics This solved the issue of failure due to overheating.
Installation of the UHS ESP™ took an hour, which is around eight times faster than previous installations at this well. This is possible because the UHS ESP™ system is fully assembled and tested at the manufacturing facility, before being delivered direct to the field. At this point only MLE connection and protectolizers positioning are required.
The results obtained so far have already proven the high potential of Lex UHS ESP™ to optimize production and provide operational benefits in even the most challenging environments.
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
Trusted by world-class brands
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.
