StatoilHydro to refurbish NCS installations

StatoilHydro will shut down 21 production installations on the Norwegian Continental Shelf (NCS) this year to expand capacity, technical improvements, and extend their economic life.

Uchenna Izundu
OGJ International Editor

LONDON, Apr. 23 -- StatoilHydro will shut down 21 production installations on the Norwegian Continental Shelf (NCS) this year to expand capacity, technical improvements, and extend their economic life.

The installations and plants to be revamped are include Oseberg, Statfjord, Gullfaks, Snorre, Troll, Kvitebjorn, Visund, Sleipner, Grane, Huldra, Veslefrikk, Brage, Heimdal, Volve, Glitne, Snohvit, Norne, Asgard, Kristin, Njord, Sture, and Karsto.

StatoillHydro will finish the turnarounds by Oct. 1 to meet gas delivery commitments and avoid poor weather.

The company has shut down LNG production from Snohvit following problems with its seawater heat exchangers. Two of the seven were replaced last autumn, and four more are due to go during a lengthy turnaround after the summer.

Many installations on the NCS will be upgraded, the company said. "Compared with 2008, when 26 shutdowns involved 270,000 work-hr in all, this year's program involves fewer but larger operations. Some 313,000 hr are due to be worked."

The first shutdown began Apr. 2 on Statfjord B and is a major program that will be the last on the platform to extend the field's production life.

Oseberg also will be refurbished in June, which includes repairing the flare system at the field center and implementing part of the low-pressure project.

Capacity upgrades are planned for Snorre A, while work on Troll A includes preparations for a new gas pipeline to Kollsnes and expansion of the living quarters.

Statfjord field's life has been extended beyond 2020. This project is estimated at 23 billion kroner, including the Tampen Link pipeline, which delivers Statfjord gas to the UK, and the submersible pumps for Statfjord B and C. But this is higher than the original estimate of 15 billion kroner.

StatoilHydro and its partners are to invest in eight new electrical submersible pumps on the Statfjord C platform, and they are considering adding four pumps on the Statfjord B platform.

Total investment for the submersible pumps on Statfjord B and C is in the range of 3.5 billion kroner, and is subject to approval by the partners.

Contact Uchenna Izundu at uchennai@pennwell.com.

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