CNBC | Oil prices hold gains as US rig count falls by 4 rigs to total of 759 CNBC Oil prices rose on Friday as the dollar fell and as U.S. petroleum industry braced for Hurricane Harvey, which could become the biggest storm to hit the U.S. mainland in more than a decade. Harvey became a Category 2 storm as it crossed the Gulf of ... Hurricane Harvey Is Wreaking Havoc On Energy Prices Oil and Gasoline Climb as Hurricane Harvey Heads for Texas Coast Oil prices rise as refineries shut down ahead of Hurricane Harvey |