Brent crude futures gained 1% to 114.31 USD a barrel, having earlier reached 114.72 USD - the highest level since May 4.
Saudi state-owned oil company Aramco on Thursday ordered the evacuation of its headquarters in Dhahran on the Gulf near Bahrain, as fighting intensified between the world's largest crude exporter and Yemen-based Houthis.
Clashes between the Houthis and a Saudi-led coalition have raged since the Houthis pushed towards Bab el-Mandeb, a shipping chokepoint near the Red Sea.
Russia had agreed to lift a self-imposed ban on diesel exports and supply the fuel to global markets, in an effort to lower fuel prices after an agreement between US President Donald Trump and Russian President Vladimir Putin.
