Brent crude oil prices climbed 3.23 percent to around $112.27 a barrel on Thursday, at around 1:30 p.m., while US West Texas Intermediate (WTI) crude rose towards $99, following deadly attacks in Saudi Arabia.
The US also ordered some personnel and their family members to leave American embassies in Saudi Arabia.
The rise in crude prices following the attacks heightened concerns that escalating hostilities in West Asia could disrupt oil supplies, even as exports through the Strait of Hormuz have accelerated.
Brent crude, the global benchmark, has risen more than 80 percent this year after the US-Iran war disrupted oil flows from the Persian Gulf. The conflict is approaching its ninth month.
Crude exports have risen in recent weeks and are nearing pre-conflict levels as tankers switch off their transponders to avoid detection. However, shipments of oil products remain constrained.