Skip to main content

Det norske: two small discoveries to be tied back to Alvheim FPSO

Oilfield Technology,

Det norske has decided to develop Viper-Kobra. The project comprises two small discoveries in the Alvheim area. According to plan, approximately 7500 bbls will be flowing into the Alvheim FPSO every day around December 2016.


Viper-Kobra is located in the Alvheim area and consists of two separate discoveries with a potentially connected reservoir. Kobra was discovered in 1997 (production licence 203) and Viper (production licence 203) in 2009. Viper-Kobra is not a separate field, but constitutes part of the Alvheim field. Thus, the development is included in the PDO for Alvheim, as are the other structures in the area.

The two reservoirs contain approximately 4 million bbls of recoverable oil each. Including some gas, total recoverable reserves are estimated at 9 million boe.

Maximising production

“The existing infrastructure in the area renders this project profitable. The key is to develop both discoveries with the same infrastructure, thus ensuring maximum utilisation of the resources”, says the SVP Technology and Field Development of Det norske, Øyvind Bratsberg.

The estimated output of the wells is an average daily rate of 7500 boe.

The development costs for Viper-Kobra are estimated at approximately NOK1.8 billion. This includes the drilling of two wells, subsea installations, pipelines and hook-up.

Subsea installation and pipeline

The development comprises a new subsea installation with a pipeline tied into the Volund manifold. The four well slots are designated for one well from Viper and one from Kobra, in addition to two well slots intended for potential future wells in the area.

According to plan, the first contracts will be awarded in January 2015. The drilling of wells will likely commence during the spring of 2016. Installation of templates and hook-up is scheduled for September the same year, whereas start-up of production is planned for year-end 2016 or early 2017.

The distribution of ownership interests corresponds to that of the Alvheim licence; Det norske (operator) 65%, ConocoPhillips 20% and Lundin holding a 15% interest.

Adapted from press release by Cecilia Rehn

Read the article online at:


Embed article link: (copy the HTML code below):