ExclusiveNorway could boost annual gas exports to Europe by 20 Bcm - sourcesOil and gas companies confident they can boost annual gas exports by 20 Bcm in short term and see Barents Sea pipeline as more likely nowOn the radar: Equnor’s Oseberg field could be one of the facilities to increase its gas output.Photo: MARIT HOMMEDAL/NTB/SCANPIXOle Ketil HelgesenStavanger