U.S. West Texas Intermediate (WTI) crude futures ended Monday's session up 63 cents, or nearly 1.1 percent, to $57.99 a barrel.
Brent crude futures, the international benchmark for oil prices, touched a 2½-year high of $64.93, before easing to trade up $1.22, or 1.9 percent, at $64.61 a barrel at 2:26 p.m. ET (1926 GMT) .
The difference between the two grades was the largest since late October, as Brent rallied after the shutdown of the pipeline that carries the largest grade of North Sea crude oil.
The pipeline, which can carry 450,000 barrels per day of Forties crude from the North Sea to the Kinneil processing terminal in Scotland, has been operating at reduced capacity for about four days before the shutdown.