Brent crude for April delivery was up $1.36 at $34.75 a barrel. It rose as far as $34.80, the highest level since Feb. 5, on top of 11-percent gains over the past two days.
Brent crude fell to a new 12-year low on Thursday as the prospect of more oil supplies from Iran loomed, amid gloom over a world already awash with supply and concerns about global economic growth.
US crude tumbled below $31 a barrel Tuesday, extending a sell-off that has pushed it to more than 12-year lows amid a global supply glut, a strong dollar and tepid demand.
