U.S. crude rose to $59.86 by 0921 GMT, up 62 cents from the settlement on Wednesday, the last day of trade in New York before the two-day Thanksgiving holiday.
London Brent crude gained seven cents to $60.10, adding to 68-cent gains on Friday.
Saudi Oil Minister Ali al-Naimi, OPEC's most influential voice, held out the prospect of a further output cut when the group meets next month in Abuja.
At an emergency meeting in Doha in October, OPEC agreed to remove 1.2 million barrels per day from oversupplied markets -- the first cut in two years. Since then, OPEC ministers have lined up in favour of a further reduction to underpin prices.
Production cuts during peak winter demand would achieve OPEC's aim of drawing down high oil stocks.




