Brent oil futures open today’s trading session firm over $117 a barrel as traders and investors resume buying into crude, which is driving oil prices higher, but the real concern is oil supply, as Libya oil production goes offline and unrest in the Middle East is set to escalate this week. Latest Brent Oil Price In London, Brent crude oil futures for April 2011 delivery was trading at $117.38 a barrel, 07.40 GMT this morning on the ICE Futures Exchange.