Troll A
Troll A substructure is 379m high and is the world's tallest and heaviest offshore platform, the fourth highest manmade structure and the largest structure ever moved by man. The platform is built to last up to 70 years and the Troll gas field will supply 25% of Europe's gas needs in 2010.
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Description
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Gravity based structure for drilling and gas processing platform with 40 well slots
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Construction site
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Hinna, and Vats near Stavanger, Norway
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Installation site
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The Troll field, the North Sea
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Topside, operating weight
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34 000 tonnes
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Topside production capacity
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95 mill Sm3/ day
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Topside, weight during tow
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22 500 tonnes
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Total height of concrete structure
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369m
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Total height of platform with deck
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472m
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Concrete
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225 000m³
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Reinforcement
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98 000 tonnes
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Prestressing cables
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10 000 tonnes
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Mechanical outfitting
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85 00 tonnes
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Contract award
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March 1991
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Topside installation on substructure
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January 1995
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Tow to field / installation on field
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July 1995
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