KEY POINTS
  • Oil prices extended earlier gains as U.S. commercial crude stockpiles unexpectedly fell by 2.6 million barrels.
  • The United States and Saudi Arabia are expected to put pressure on Iran as the Saudi Crown Prince visits Washington
  • Healthy demand has also supported crude prices, but a relentless rise in U.S. crude production is capping gains.
Pump jacks in an oil field over the Monterey Shale formation near Lost Hills, Calif.

Oil prices rose for a second day on Wednesday, trading at six-week highs, on a surprise decline in U.S. crude inventories and as concern persisted over possible disruption to Middle East supply.

U.S. West Texas Intermediate (WTI) crude futures ended Wednesday's session up $1.63, or 2.6 percent, at $65.17 a barrel.