
US West Texas Intermediate (WTI) crude goes up 26 cents, or 0.3 percent, to trade at $91.56.
The gains come as rising tensions and renewed US-Iran hostilities heighten concerns over Middle East supply risks, according to the Reuters news agency.
On a weekly basis, Brent rises 7.1 percent while WTI is 9.8 percent higher, set for the highest gains since the week ended July 20, reports AL Jazeera.