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We’re currently developing Mariner, one of the largest industrial projects in the UK in recent years—a gross investment of more than GBP 4.5 billion – Mariner will support over 700 long term jobs and generate significant revenue in the supply chain for decades to come. Contracts worth more than GBP 1 billion have already been awarded to UK suppliers.

The Mariner field will contribute towards reliable energy supplies for the next 30 years and, with more than 2 billion barrels of oil in place, offers significant potential to create even more value to 2050 and beyond. 

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Digital frontrunner in the North Sea applying new technology to deliver safe and efficient solutions

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Contracts worth more than GBP 1 billion awarded 

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Located on the East Shetland Platform of the UK North Sea

A new chapter is underway for the Mariner field.

Mariner is one of our most innovative offshore developments, and Equinor is at the forefront of applying new digital solutions and the latest technologies. We are testing new ground through our offshore digital workers and the use of Echo, a digital copy of the platform, to deliver safe and efficient solutions.

Discovered over 30 years ago, approximately 150 kilometres east of the Shetland Islands, the Mariner field was left untouched due to the complexity of the reservoir. In 2007, we acquired the operatorship, and through new ways of thinking and new technology, we started to find ways to meet the challenges laid down by this demanding field.

Equinor and its partners made the investment decision for the Mariner project, a gross investment of more than GBP 4.5 billion in 2012, one of the largest capital commitments to the UK Continental Shelf (UKCS) in recent years.

The Mariner field will employ over 700 people, offshore and onshore, contractors included. With contracts worth more than GBP 1 billion awarded, it will support a significant level of investment and jobs in the UK supply chain for many years to come.

Below the surface 

The Mariner oil field consists of two shallow reservoir sections: the deeper, Maureen formation and the shallower Heimdal reservoir.

The development of the Mariner field will contribute more than 300 million barrels of oil. The recoverable reserves have been increased by 20% from 250 million to 300 million barrels of oil through better understanding of the reservoirs and new seismic technology.  With more than 2 billion barrels of oil in place, there is great potential to create even more value from the field in the long term.

Mariner field

Maureen formation: 

  • 1492 meters
  • API gravitiy: 14.2 
  • Viscositiy: 67 cP 

Heimdal reservoir :

  • 1227 meters
  • API gravitiy: 12.1 
  • Viscositiy: 508 cP

Mariner project story

Heavy lifting campaign

Sailaway

Mariner facts

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  • Digital frontrunner in the North Sea applying new technology to deliver safe and efficient solutions 
  • Production start planned for 2019
  • Contracts worth more than GBP 1 billion awarded 
  • Recoverable reserves increased from 250 to 300 million barrels of oil 
  • More than 2 billion barrels of oil in place offering significant upside for the development in the future
  • Long-term UK field development to 2050
  • Located on the East Shetland Platform of the UK North Sea, approximately 95 miles or 150 kilometres east of Shetland and 320 kilometres north-east of Aberdeen
  • Equinor is the operator of Mariner with 65.11% equity. Co-venturers are JX Nippon (20%), Siccar Point (8.89%) and ONE-Dyas (6%)