Giant Offshore Troll A Increases Gas Production

Published at 07:52PM - 22/10/15

Giant offshore gas platform, the Troll A, has started up two new compresses, hugely increasing both the natural gas it can supply and the platforms operating life.

Operators Statoil, have stated that the new compression module will increase the platform’s gas recovery by as much as 83 billion cubic meters, accounting for around 30% of Norway’s total gas exports to Europe.

The new compressors add to two existing compressors on the Troll A.  The combined compression will ensure the Troll field increases its daily production to 120 million cubic meters of gas, totalling 30 billion cubic meters of natural gas over the course of a year.

Statoil have said that the increased gas production, will be enough to power power as many as 10 million European households.

On top of the increased production, the new compression module will see the life of the Troll A offshore platform greatly increased by 18 years, taking its current end of field life from 2045 to 2063.

Ministerial Visit

To mark the launch of the new compressors, Norway’s minister for EU affairs, Vidar Helgesen, made a visit to the Troll A platform.

Helgesen  said: “Europe is in a transition phase with regard to both competitiveness and climate. Stable and competitive gas deliveries from the Norwegian continental shelf (NCS) play a key role along these two axes.

Higher production and flexibility from the Troll field is therefore good news to both Norway and Europe,”

Earlier this month, Statoil completed a double of world firsts, after successfully commissioning the world’s first subsea wet gas compressor on its Gullfaks field, whilst back in September it also commissioned the world’s first subsea compressor in its Åsgard field.

Well Below Budget

The initial estimate and budget for the project, from engineering through construction to installation,  was around NOK 10 billion (US$1.2 bn), whilst the final bill on completion came to NOK1 billion (US$121 bn) under budget.

The project’s main contractor, Aibel, carried out much of the fabrication work at its Thailand yard, whilst the integrated utility (IU) module was prefabricated in Poland and assembled in the firm’s Haugesund yard in Norway.

Statoil’s senior vice president operations west, Gunnar Nakken, said: “This is a new strategic milestone for the Troll field. The compressors are an important investment to ensure sustainable, long-term production and activity on the Norwegian continental shelf (NCS),”

Troll Field

The Troll gas field is located around 65 kilometres (40 mi) west of Bergen, Norway. 

The Troll A gas platform, standing 472 metres (1,549 ft) high, and weighing 683,600 tonnes, is recognised as the largest manmade structure to have ever been moved by mankind.

Statoil celebrated 20 years of the Troll field’s operational life in September 2015, having reported that Troll had produced over 1.56 billion bbl over the field’s first two decades and made around NOK 460 billion (US$53.76 bn) in income.

Back in 2006, to mark the giant Troll A platform’s 10 birthday, Statoil organised a concert for workers and dignitaries at the bottom of one of the Troll’s legs. Singer songwriter Katie Melua performed the concert, 303 metres (944ft) below sea level, breaking a world record for the deepest underwater concert.

Last updated on 11:37AM - 23/11/15