Shell has announced a deep water gas discoveryoffshore Malaysia.The successful Rosmari-1 well is located 135 kms offshore in Block SK318, and wasdrilled to a total depth of 2,123 metres. The well encountered more than 450 metresof gas column .With further exploration planned, the finding is a positive indicator of the gaspotential in an area of strategic interest for Shell, the company said in a statement.