The order of wells has been chosen to minimise the risk of damage to the environment in the unlikely event of a discharge, and reduce the likelihood and consequence of any damage.
In the individual environmental risk analyses carried out for each well, we have seen that seabirds would be most at risk from any blowout. Species such as black-legged kittiwake, puffins and common guillemots would among the species that could be most affected out at sea. The probability of damage to the populations would vary from well to well, but all are within the usual ranges for the Norwegian continental shelf. For other marine mammals, there is either no likelihood, or marginal likelihood of minor damage to populations, and such damage would be recovered naturally within 1-3 years.
Low probability of damage throughout the year at Korpfjell
The environmental risk analysis for Korpfjell shows that even in the event of an accident, the probability of no damage occurring is over 90% during the planned drilling period. The probability of population damage to common guillemots that could be recovered in 1-3 years is 4.9%. At Korpfjell and Gemini Nord the probability of moderate damage is no greater than 15% at any point in the year.
Koigen Sentral and Bjørnøya
Statoil has chosen to avoid drilling Koigen Sentral during the period when the risk to the environment is highest. As a precautionary measure, the date for Koigen Sentral has been moved to the last phase of the drilling campaign to avoid drilling in the period with the greatest risk of damage if any discharge should occur.
In addition, Statoil has scaled up our oil spill preparedness measures to reduce the probability of any oil reaching Bjørnøya. The highest probability of environmental damage would then be 15.5% at Lunde, in September. Even then, the probability of no damage occurring in the unlikely event of a spill would still be over 75%. With robust oil spill preparedness, the risk of environmental damage would still be well within the norm for the Norwegian continental shelf.
The risk of environmental damage in the event of an accident is primarily determined by our efforts to prevent an incident. Secondly, it is important to be aware of the risks and plan accordingly. Furthermore, the level of oil spill preparedness on the Norwegian continental shelf is high, with participating actors being well trained in individual and coordinated responses. We are therefore confident that we will be able to carry out our activity without harm to the environment and with acceptable risk.