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Rio Pipeline 2019
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Ventro de Convenções Sul América, Cidade Nova, Rio de Janeiro - RJ
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Idiomas:Português e Inglês

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  Produção - Novidades Tecnológicas
  Autor/Fonte: Statoil/PennEnergy Petro
  Data: 20/04/2012

    Asgard subsea gas compression approved by Norwegian parliam

The development of the Åsgard subsea gas compression was approved in the Storting (Norwegian parliament) on 27 March 2012. This signals the start for implementation of one of Statoil’s most demanding technology projects aimed at improving recovery.

Åsgard subsea gas compression will increase recovery from Mikkel and Midgard by around 280 million barrels of oil equivalents. The technology represents a quantum leap that can contribute to significant improvements in both recovery rate and lifetime for a number of gas fields.

“Åsgard subsea gas compression is a profitable and robust project. Development of the world’s first compression facility for gas under water is a challenging task,” says Astrid Jørgenvåg, production director for the Åsgard area.

As time passes, the pressure from Midgard and Mikkel will be too low to maintain stable flow and high production to the Åsgard B platform. To compensate for this, we will install compressors on the seabed near the wellhead to increase pressure in the production flowlines, she said.  

Demanding project

Prior to the approval of the Plan for Development and Operation (PDO), Statoil notified the authorities of a cost increase in the project. Preliminary assessments show that the growth lies within the range of uncertainty of about 20 per cent of the total investment amount set last summer.

There are two main issues that have impacted the cost scenario. One is a tighter supplier market within marine operations. Rates have gone up, particularly within the installation segment in the period after the company submitted the PDO last year.

The other factor is changes made during the design work to ensure high regularity, maximum recovery and even more robust production. These changes have lead to certain design modifications and weight increases on modules.

“The higher costs we are now seeing are unfortunate. They show the complexity of such a pioneering project as Åsgard subsea gas compression. We are working hard to reduce costs while safeguarding quality,” says Anders Opedal, who leads the project in Technology, projects and drilling (TPD).

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