Ashtead supports Northern Lights subsea structure installation

Feb. 13, 2020
Ashtead Technology has completed subsea installation monitoring work to support the Northern Lights carbon capture storage project in the Norwegian North Sea.

Offshore staff

ABERDEEN, UK Ashtead Technology has completed subsea installation monitoring work to support the Northern Lights carbon capture storage project in the Norwegian North Sea.

Developed by Equinor in partnership with Shell and Total, the Northern Lights project aims to securely collect and transmit CO₂ from onshore sources and store this under the seabed.

Ashtead provided a subsea services company with its integrated Deflection Monitoring System (DMS) and associated equipment. The DMS is a suite of structural monitoring systems to assist offshore construction operations, combining software with modular technology.

Using the DMS, company personnel and equipment monitored the installation of an Integrated Satellite Structure (ISS). The systems monitored and analyzed parameters such as structure deflection, heading, pitch, roll and suction can differential pressures in real time.

During the structure placement, the DMS system was configured for autonomous independent operations, communicating data to one of the installation’s ROVs. Advanced positioning tools and measuring sensors enhanced the accuracy of the data collected, the company said.

Northern Lights is part of a Norwegian full-scale project for CO2 capture, transport, and storage. This includes capture of CO2 from two industrial companies in eastern Norway, and transport of liquid CO2 to a terminal in western Norway.

From there, the liquid CO2 will be transported via pipeline and pumped into a reservoir at a depth of nearly 3,000 m (9,842 ft) beneath the North Sea where it will be permanently stored.

02/13/2020