Statoil to invest $7 billion to develop UK North Sea Mariner field

12/23/2012

Statoil to invest $7 billion to develop UK North Sea Mariner field

STAVANGER -- Statoil has made an investment decision to develop the Mariner oil field development in the UK North Sea. The project entails investments of more than $7 billion and is the largest new offshore development in the UK in more than a decade. The Mariner field is located on the East Shetland platform of the UK North Sea approximately 150 km east of the Shetland Isles.

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Pending final approval of the field development plan by the UK authorities, Statoil expects to start production from Mariner in 2017. The field is estimated to produce for 30 years, with average production of around 55,000 bopd over the plateau period from 2017 to 2020.
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The Mariner Field consists of two shallow reservoirs, the Maureen Formation and the Heimdal Sandstones of the Lista formation, with nearly 2 Bbbl of oil  in place and expected reserves of more than 250 MMbbl. Both formations yield heavy oil of around 12 to 14 API.

The field will be developed with a production, drilling and quarters (PDQ) platform, based on a steel jacket, with 50 active well slots, and a floating storage unit (FSU) of 850,000 bbl capacity. In addition, a jack-up rig will be used for the first 4-5 years.

Because of the low well flow rates and early water break-through, there is a need for many wells and a process designed to handle large liquid rates and oil-water emulsions. All production wells will have stand-alone sand screens and ESPs for lifting.

Statoil has earlier awarded contract for heavy lift operations to Saipem in the UK. The contract for a floating storage unit (FSU) and a drilling rig (cat J) will be awarded in Q2 2013. Invitation to tender for contracts on risers, pipelines, umbilicals, flowlines, power cables and marine operations will be issued in December with planned contract awards in Q2 2013.

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