(EnergyAsia, January 16, Friday) —Singapore oil rig builders Keppel Corp and Sembcorp Marine have been forced to accept delayed payments for projects worth a total of US$850 million ordered by Norwegian contractor Seadrill. SembMarine’s PPL Shipyard is to supply two jack-ups worth US$430 million while Keppel Fels has been contracted to build two jack-ups worth…