Compressor boost for Troll


Statoil has installed two new gas compressors on the Troll A platform that are set to significantly boost recovery from the stalwart North Sea gas field off Norway.

The state-owned operator is looking to extract an additional 83 billion cubic metres – or 522 million barrels of oil equivalent – from the field by doubling the platform’s existing two compressors to compensate for declining reservoir pressure.

The 6000-tonne module with the two new compressors - built by local contractor Aibel’s yard in Thailand and due to be up and running next year - was lifted into place on the facility by heavy-lift vessel Saipem 7000 this week.

The compression project is aimed at achieving daily export capacity of 120 million cubic metres and annual output of 30 billion cubic metres, with Troll A expected to deliver gas for the next 50 years, according to project manager Knut Solemslie.

Statoil is focusing heavily on compression to raise recovery rates at existing fields, with new compressors installed on Troll, Aasgard, Kristin and Heidrun set to generate additional volumes of more than 1.2 billion barrels of oil equivalent.


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