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Statoil: Mariner jacket on its way to the North Sea


Published Aug 12, 2015
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Mariner jacket sailaway

The steel jacket for the Statoil operated Mariner A platform on the UK Continental Shelf (UKCS) left the Spanish Dragados yard on 10 August, and is now on its way to the North Sea.

Construction of the large platform sub-structure started in October 2013 and was completed in May this year, on time and within budget and with a very good HSE performance. 134 metres high and with a footprint of 88 x 62 metres, it is the largest steel jacket ever built for a Statoil project. The weight is 22,400 tonnes including floatation tanks and rigging.

The load-out from the Dragados yard in Cadiz onto the S44 barge took place in late July. Yesterday the main tug “Skandi Iceman” was connected to the barge and in the afternoon the jacket safely entered the channel of Bahia Cadiz. The 1 835-nautical mile journey from the southern part of Spain to the Mariner field in the North Sea is expected to take around two weeks.

After it has arrived at the field, the jacket will be launched by the barge being ballasted to a certain angle, enabling the 22,400-tonne structure to slide horizontally into the sea. Subsequently the structure will be upended and maneuvered into the right position by the heavy-lift vessel Saipem 7000. Finally the jacket will be secured by 24 piles, ensuring that it is safely fixed for many decades to come.

Topsides installation is planned to take place in 2016.

Tags: Statoil




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