(Corrects headline and first paragraph to show tendering willstart immediately, not in April)
OSLO, Dec 10 (Reuters) - The tendering process for a seismicsurvey in a once-disputed offshore zone between Norway andRussia will begin immediately, with surveying starting in Aprilnext year and concluding in the autumn, oil firm Statoil said on Tuesday.
Some 17 oil firms are cooperating in commissioning thesurveys of the seabed in the area. They include BP,Chevron, ConocoPhillips, Eni, Lukoil and Royal Dutch Shell. (Reporting by Gwladys Fouche, editing by Nerijus Adomaitis)