Subsea control systems incorporating high-bandwidth communications and electrical power supply for offshore Oil and Gas production facilities. The solution called DC/FO, co-developed with Equinor, is based on DC power transport and Fiber Optic communication and addresses cost-efficiently tieback field architectures. It targets near-unlimited distances and deep-water operations, with superior reliability and resiliency and is considered as the base for “All electric” subsea control solutions allowing significant cost-savings. The solution is based on standard product whatever the project configuration, avoiding cost and delay required for new qualification of equipment.

DC/FO Subsea Control which allows :

- Long distance reach of subsea wells (long tie back) with high power supply,
- Use of standard, low costs, field proven products from telecom industry to lower capex requirement,
- Expendability of the field. Possibility to phase the development,
- Repair of failing umbilicals (Electrical insulation fault).

Recently, ASN has been awarded by Equinor a fiber optic cable subsea deployment project in the Barent Sea, one with the newly qualified DC/FO technology for the subsea control of the Johan Castberg development.