Blue Water

Repurposed Data for Celtic Sea Developers

Are you competing for the rights to develop offshore wind sites in the Celtic Sea? There is data available now that can help you gain an advantage. RockWave has already proved this for a ScotWind consortium, and it could work for you too.

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Offshore UK & Ireland, there exists an abundance of seismic data that was originally acquired for the Oil & Gas industry. However, the data have typically been thought to lack sufficient resolution to gain an understanding of the shallow geology and foundation/anchor zone.

Since RockWave brought the concept of ‘Repurposing’ to SSE, Mauribeni and CIP as part of their successful ScotWind application, this is no longer true.


What is Repurposing?

As part of the successful ScotWind application, RockWave obtained the raw field data from the North Sea Transition Authority “MNSH 2D” dataset, a UK government-funded survey acquired in 2015 to generate O&G exploration activity. Where a typical O&G seismic processing workflow would throw away useful samples representing the shallow subsurface in favour of deep exploration targets, RockWave instead designed their Repurposing workflow to maximise this information. At every stage, the data was conditioned to ensure as many details in this crucial zone were retained and optimised.

The consortium then worked with the Atkins Ground Engineering and Tunnelling team, who used the Repurposed data to accurately map Quaternary sediment thickness across the site and identify possible geohazards such as depressions, tunnel valleys, faults and gas pockets that will require further investigation once ultra-high resolution site investigations have been completed.


Offshore Wind in the Celtic Sea

The Celtic Sea is the focus for the next Repurposing adventure where energy producers are looking at floating and fixed solutions for their offshore wind developments.

The Crown Estate have now identified five Areas of Search (AoS) in the Celtic Sea Floating Wind Programme: Draft Site Selection Methodology document, within which smaller Project Development Areas will be located. The document has identified areas of higher risk posed by sediment depth, sediment type and bedrock type, however these are based on BGS survey data, which as demonstrated by the ScotWind E1 project mentioned above, are lacking in the detail that can be obtained through Repurposing.

Furthermore, the Irish government has set ambitious targets for offshore wind power generation by 2030 and the likes of SSE and Energia have already announced their plans in the Celtic Sea, with more interest being shown from others in the region.

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Benefits of Repurposing...

Repurposed O&G seismic data is available in the North Sea and Celtic Sea (see maps below). The new data will prove useful to developers who would like a better understanding of depth to bedrock, presence of geohazards and other financially impacting considerations.

The Repurposed data can be delivered to a destination of your choice for interpretation and mapping out the significant subsurface features within an early-stage ground model. You will either have this capability in house, or we can put you in touch with people that do.

Repurposing will not replace the need to acquire an ultra-high resolution seismic (UHRS) survey later down the road, which are more densely acquired over a smaller area. But armed with a better understanding of the subsurface considerations, it might mean you can reduce spending on these geophysical surveys through less line kms, or allocating the same budget for a smarter acquisition, by focusing on areas that need more detailed investigation.

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Your next step...

RockWave has successfully applied Repurposing to the following three modern O&G seismic datasets:

  • Mid North Sea High (MNSH) 2D

  • Southwest Approaches 2D

  • Geopartners Repurposed NCS 2D

Geopartners Repurposed NCS 2D is a multi-client dataset, is available through RockWave via a Licensing Agreement with GeoPartners.

The North Sea Transition Authority MNSH 2D covers the UK North Sea and was used in ScotWind as described above, while the SW Approaches 2D dataset provides coverage across ORE Catapult Key Development Zones 1,2,3 & 5.

Enter your name and contact details into the form below, with a quick note that references your interest in Repurposing, then we will get back to you.

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UK Celtic Sea: SW Approaches

Coverage across all areas for the upcoming Floating Wind lease process. Optimise your initial site evaluations ahead of application.

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