Early in New York, benchmark crude was up $1.56 at $91.43 a barrel. The price has risen about $14 per barrel since oil hit its low for the year three weeks ago.
U.S. drivers are seeing a corresponding increase at the pump. A gallon of regular gas now costs an average of $3.44, up 11 cents from July 1.
The Energy Information Administration reported Wednesday that average oil demand increased last week in the U.S. for the third week in a row. The escalating conflict in Syria and renewed tensions between Iran and Israel are also contributing to oil's rise.