UK's Serica Energy has revised its 2025 production guidance following maintenance challenges and scheduled subsea work on fields tied to the Triton FPSO.
The Triton Floating Production Storage and Offloading (FPSO) vessel is operated by South Korea's Dana Petroleum.
Serica Energy said production guidance has been reduced to between 29,000 and 32,000 barrels of oil equivalent per day (boepd), down from a previous range of 33,000–35,000 boepd.
Operator Dana Petroleum notified Serica of a temporary reduction in output from the Triton FPSO due to a vibration issue within the compression trains.
Production is currently running at a significantly reduced rate but is expected to return to normal levels by the end of September once repairs are completed.
Production net to Serica from the Triton FPSO exceeded 25,000 boepd in August. Once both compressors are operational, output will be boosted further, supported by additional production from the EV02 well on the Evelyn field.
Dana has also scheduled subsea intervention work on the Bittern field for November 2025 to address an emerging infrastructure vulnerability.
Originally expected in 2026, the three-week scope will now halt production not only from Bittern but also from the Evelyn and Gannet fields, temporarily reducing Serica’s output by more than 20,000 boepd.
Despite the setbacks, Serica highlighted that production ramp-ups earlier this year had lifted wider portfolio output to more than 55,000 boepd in mid-August, before the maintenance-related constraints began.
