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Feasibility study on repurpose of oil and gas infrastructure for offshore hydrogen generation

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Charley Rattan's picture
World Hydrogen Leader Charley Rattan Associates

UK based offshore wind & hydrogen business advisor and trainer; Faculty member World Hydrogen Leaders. Delivering global offshore wind business advice, problem solving and training: ...

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  • Sep 16, 2021 2:48 pm GMT
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Existing offshore infrastructure identified as having the potential to be re-purposed for the production of offshore hydrogen may be categorised, as: • In service and end of life floating and fixed production installations, with larger fixed installations located in the Northern North Sea (NNS) and Central North Sea (CNS);

• End of life pipelines, with candidates for export or storage of hydrogen product, disposal of CO2 and the import of natural gas feedstock for Steam Methane Reforming (SMR) operations located in the NNS and CNS;

• Subsurface storage facilities already identified for Carbon Capture, Utilisation and Storage (CCUS) service which will be required to capture the Carbon Dioxide (CO2) byproduct of SMR hydrogen production; and

• Subsea infrastructure such as well heads, manifolds, mattresses and other subsea equipment. It is noted, however, that these are unlikely to have a major impact on the overall cost of a hydrogen generation project. Brent infrastructure located in the NNS and Markham field in the CNS provides ideal donor sites for consideration, as these sites are located in close proximity to connecting pipelines and Offshore Wind Farm (OWF) developments. A converted bulk carrier is ideally suited to provide a platform to host hydrogen production equipment from constrained offshore renewable resources found to the north of the Scottish mainland. Supply chain infrastructure necessary for the repurposing of candidate oil and gas installations has been an established part of the Scottish oil and gas economy for many years. This infrastructure is well placed to support repurposing towards a hydrogen economy.

• Many ports routinely supply the offshore oil and gas industry and have already received decommissioned infrastructure removed from offshore fields with local supply chains processing the material.

• Scottish ports are located in relative proximity to North Sea oil and gas infrastructure; they demonstrate the physical means, organisational capabilities, and experience to support a repurposing effort which will require a multidisciplinary approach to repurposing.

• A multidisciplinary approach is expected to transcend engineering services, project management, marine operations, supply base logistics decommissioning and waste management.

 

 

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