Subsea 7’s Seven Arctic vessel sailed the two 300-metric ton templates 45 km (28 mi) from the base in Florø to the Nova field, before craning the structures 370 m (1,214 ft) below the ocean surface. The templates were constructed by Aker Solutions in Egersund, western Norway.
André Hesse, Wintershall Dea Nova Project Director, said: “With the installation of these two templates we have successfully begun the subsea campaign for 2019. In close co-operation with our key suppliers, we have employed a ‘One-Team’ approach to building Nova, focusing on the shared goal of delivering the field efficiently and safely…”
The Nova oil field is being developed with two subsea templates tied back to the Neptune-operated Gjøa platform. Gjøa will receive the well stream and provide water injection and gas lift to the Nova field. A new module will be lifted onto Gjøa in 2020.
The installation unlocks the next phase of the field development, the company said, with 65 km (40 mi) of pipelines now ready to be laid in preparation for tieback to the Gjøa platform.
Discovered in 2012, Nova is 20 km (12 mi) southwest of the Gjøa platform and 120 km (75 mi) northwest of Bergen. It aims to recover around 80 MMboe, mostly oil, with start-up expected in 2021. Estimated capex is NOK9.9 billion ($1.1 billion).
Wintershall Dea holds a 45% share, along with partners Capricorn Norge AS (fully owned subsidiary of Cairn Energy PLC) (20%), Spirit Energy Norge AS (20%), and Edison Norge AS (15%).