Strategy & Engineering Study for Offshore Hydrogen Backbone

Project Name: Strategy & Engineering Study for Offshore Hydrogen Backbone
Clients: NOGAT (Northern Offshore Gas Transport) & NGT (NoordGasTransport)
Location: North Sea, Netherlands

Project overview

NOGAT and NGT contracted Enersea to conduct a strategy study focused on the transformation of their existing offshore natural gas infrastructure into a hydrogen transport backbone. The study explores scenarios that enable a phased approach, allowing for a combination of natural gas and hydrogen transport initially, with the ultimate goal of repurposing all suitable pipelines exclusively for hydrogen. Covering nearly 750 km of offshore pipelines from the UK border to the Dutch coast, this strategy aims to support offshore hydrogen production while minimising environmental impact. Enersea collaborated on this study with Guidehouse, experts in energy transition, and sister company H2sea, a pioneer in green offshore hydrogen development.

Enersea was responsible for

Flow Assurance Analysis

Evaluating the feasibility of hydrogen transport through existing pipelines, ensuring reliable flow under varied conditions.

Fatigue Loading Assessment

Analysing the pipeline’s structural integrity for long-term hydrogen transport, confirming suitability for extended service life.

Strategic Planning

Developing scenarios for the phased transition of pipeline sections from natural gas to hydrogen transport, balancing ongoing gas production with future hydrogen demands.

Project Significance

This innovative project aims to leverage existing infrastructure, positioned strategically near future offshore wind park areas, to facilitate offshore hydrogen production and transport. With the hydrogen backbone connected to onshore facilities in Eemshaven and Den Helder, this initiative could support the Dutch offshore hydrogen demo’s and accommodate up to 14 GW of offshore hydrogen production, accelerating the energy transition and advancing climate goals.

Stage 2+ Project – A15 & B10 Development for Petrogas

Due to its expertise in developing small and economically challenging gas fields, Enersea was awarded the Front-End Engineering Design (FEED) directly by Petrogas and the Detailed Design contract through a close cooperation with HSM.

Riser and Pipeline Design Electrified Gas Production Platform N05-A

The N05-A project will be a groundbreaking offshore gas production platform, to be situated in the Dutch sector of the North Sea and developed by ONE-Dyas.