Brent crude futures LCOc1 were up 13 cents at $56.47 a barrel by 07:31 GMT, after gaining 1% the previous session. Brent is 3.7% higher for the week, the first increase since the week of January 3.
U.S. West Texas Intermediate (WTI) futures CLc1 were 14 cents higher at $51.56 a barrel. The contract rose 0.5% on Thursday and is now 2.4% higher for the week.