Serica Energy has announced further maintenance on its Triton FPSO, resulting in a temporary reduction in production levels.
The news, coupled with scheduled intervention works on the Bittern field in November means Serica has revised its production guidance for 2025 to between 29,000 and 32,000 boepd.
It had previously been 33,000 to 35,000 boepd.
In an announcement to shareholders this morning, Serica said: "Due to a vibration issue within the compression trains on the Triton FPSO, production is currently running at a significantly reduced rate.
"Following the required repairs, normal production operations are expected to resume around the end of September.
"Work is currently continuing to deliver two compressor operations, which will facilitate the full ramp up of production at the FPSO.
"Production net to Serica from the Triton FPSO reached over 25,000 boepd in August, and running with two compressors can deliver an increase from this figure through the addition of production from the EV-02 well on the Evelyn field.
"Work on the Bittern field subsea infrastructure, which is scheduled to take three weeks to complete, is to address an emerging vulnerability.
"The work scope had previously been removed from the outage in summer 2025 and was expected by Serica to be completed in 2026, but the operator has now confirmed that it will take place in November this year.
"Given the location of the pipework, in addition to the Bittern field this will also halt production from the Evelyn and Gannet fields, resulting in a temporary reduction of over 20,000 boepd net to Serica."