A video has been released showing work taking shape on the Tailwind Energy-operated Evelyn development and the Gannet E expansion project in the North Sea.
Footage from TechnipFMC has shown installation work for three subsea manifolds on the pair of developments.
On social media, the firm said the work was carried out by the Deep Discoverer vessel on behalf of operator Tailwind Energy and its partner Dana Petroleum.
Both developments are expected to reach first oil in the fourth quarter of this year.
Gannet E is a two-stage project to expand production from the field, with a new production line and manifold being installed to boost output from the existing three wells.
Evelyn meanwhile could yield 17.4million barrels of oil equivalent (boe), with an additional 4.4million from a second well.
Both are tie-backs to the Dana-operated Triton FPSO, around 120 miles east of Aberdeen.
Tailwind was founded in 2016 and is backed by private commodities and energy group Mercuria.
It acquired its 100% stake in Gannet E in September 2018 through its purchase of Shell and ExxonMobil’s stakes in the Triton cluster.
Shell initially developed Gannet via three wells connected to the Gannet Alpha platform, about 110 miles east of Aberdeen.
First oil was achieved in 1998, some 16 years after the field’s discovery, but production halted in 2011 following a pipeline leak.
Gannet E resumed production in 2018 following installation of a new pipeline to Triton.