Oil prices climbed on Friday, extending sharp gains in the previous session as frigid weather swept across large swathes of the United States, threatening to further disrupt oil supplies.
Brent crude rose 34 cents, or 0.4%, to $91.45 a barrel by 02:06 GMT, after rising $1.16 on Thursday. The price of Brent crude oil was last above $91 per barrel in October 2014.
U.S. West Texas Intermediate crude rose 46 cents, or 0.5%, to $90.73 a barrel, having gained $2.01 cents the previous day to settle above $90 for the first time since Oct. 6, 2014.
Both benchmarks are headed for their seventh straight weekly gain.
