Oil crude futures rose 18 cents or 0.4%
Oil extended gains on Thursday as a drawdown in U.S. stockpiles of crude and gasoline lifted demand hopes, while investors also cheered a potential Brexit trade deal.
U.S. West Texas Intermediate (WTI) crude futures rose 18 cents, or 0.4%, to $48.30 a barrel by 0124 GMT, while Brent crude futures climbed 20 cents, or 0.4%, to $51.40.
Both contracts gained more than 2% on Wednesday.
"Oil markets are quiet as all investors are in a holiday mode," said Hiroyuki Kikukawa, general manager of research at Nissan Securities.
"Lower U.S. inventories of crude and fuels, as well as signs of a potential Brexit deal which led to weaker U.S. dollar, were good news, but lingering worries over a new variant of the novel coronavirus capped gains," he said.