OSLO, May 8 (Reuters) - Wage talks between Norwegian oil firms and three labour unions ended in a deal on Wednesday, industry and union officials said, averting the risk of strike action later this year that could have hit supply.

Unions Lederne, Safe and IE&FLT came to an agreement with companies, industry group Offshore Norway said. (Reporting by Nerijus Adomaitis, editing by Terje Solsvik)