Crude oil price inched up slightly on Tuesday after a power failure in Iraq and traders waited for the weekly report on US energy inventories Wednesday.

Light sweet crude contract for delivery in October climbed six cents to 65.71 dollars per barrel in New York's closing trade. London Brent crude rose 15 cents to 64.65 dollars a barrel.

Loadings and exports from Iraq's southern Basra oil terminal could return later on Tuesday after the power cut, said a shipping source.

"Overall, energy prices remain extremely sensitive to any sort of supply disruption," said a report from Refco, the world's biggest online futures broker. "We expect crude to trade a volatile range in the mid-60 dollars until more demand data become available," the report said.

Traders remained concerned about tight supplies amid strong global demand but the US energy report was expected to show a rise in crude stocks and distillates -- giving investors some relief.

Source: Xinhua