Keppel FELS earns bonus from Mercator Offshore for early delivery of Greatdrill Chetna Mar 17, 2009Amidst the global meltdown, Keppel FELS Limited (Keppel FELS) has been awarded a bonus of close to S$1 million (US$625,000) for delivering the jackup rig, Greatdrill Chetna,