US West Texas Intermediate (WTI) crude went up $1.60, or 1.72 percent, to $94.63 a barrel, Al Jazeera reported.
The gains came after Iran launched new attacks on US military assets in the Persian Gulf.
Brent crude prices have jumped by a quarter since early August as hopes for a permanent resolution to the six-month-old war faded and as fighting flared again.
MNA