Oil prices rose in early trading on Monday following reports of the latest attack on a pipeline in Nigeria, owned by Italian oil firm Eni.
US light crude was up seven cents to $62.84 per barrel in early Far Eastern trading.
"I think prices are reacting again to the situation in Nigeria, with Eni reporting attacks on its pipeline," said Andrew Harrington, resources analyst at ANZ Bank in Sydney.
Nigeria, Africa's biggest producer of crude, has seen a 20% cut in output since militants launched attacks on foreign oil companies at the start of this year.
The other two main factors keeping oil prices high are the ongoing security situation in Iraq and the nuclear stand-off with Iran that could ultimately result in trade sanctions against Tehran.
