Benchmark oil contract Brent North Sea crude reached USD 52.34 a barrel -- the highest level since October.
Traders are expecting the US Department of Energy's weekly update to show another drop in crude stockpiles, which should firm oil prices further after having already rocketed by more than 90 per cent in value since February.
Oil has surged in recent months, in part owing to a drop in the US currency that has made dollar-denominated crude cheaper for holders of the rival units.
Prior to the strong rebound, oil futures had struck near 13-year low points in February. This was after a sustained months-long drop in prices from around USD 100 a barrel because of a global supply glut.
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The impact of the sharp falls has been felt by energy majors across the world, with Russian oil giant Rosneft today reporting an 80-per cent drop in net profits for the first quarter.
US contract West Texas Intermediate (WTI) struck USD 51.15 a barrel, a high since July.
WTI for July delivery won 65 cents to USD 51.01 a barrel. Yesterday it had finished above USD 50 a barrel for the first time since July.
"A day after both crude benchmarks registered their first simultaneous close above the USD 50 a barrel level, Brent and WTI are making further headway after the Nigerian militant group responsible for a series of oil attacks snubbed the government's offer to start talks," oil brokers PVM said in a note to clients.