New York's main contract, light sweet crude for delivery in March gained 33 cents to $96.77 a barrel in the afternoon and Brent North Sea crude for March rose 12 cents to $113.60.
"Some positive data out of the US and geopolitical turmoil in Egypt and Algeria are providing support to oil," said Victor Shum, managing director of IHS Purvin and Gertz in Singapore.
US orders for durable long-lasting goods such as vehicles, computers and machinery surged 4.6 percent in December from the previous month, led by a jump in commercial aircraft orders, data showed Monday.
It was the seventh increase in the past eight months and well above the 1.6 rise expected by analysts, adding to the slew of improving economic data from the world's largest economy and crude consumer.
Meanwhile, deadly street clashes in Egypt have seen President Mohamed Morsi declare a month-long state of emergency and impose night-time curfews.
The unrest in Egypt, which controls the vital Suez Canal shipping route, has sparked fears of a disruption in supply.
In Algeria, two security guards protecting a gas pipeline were killed and seven others wounded Monday in a fresh attack by Islamists southeast of the capital Algiers.
The attack came nearly a fortnight after an attack on a gas plant in the southern Sahara desert ended with the deaths of almost 40 captives, mostly foreigners.