Oil prices end higher, but post weekly loss

NEW YORK, Sept. 16 (Xinhua) -- Oil prices eked out modest gains on Friday, but demand worries kept prices lower for the week.

The West Texas Intermediate (WTI) for October delivery increased 1 cent, or 0.01 percent, to settle at 85.11 U.S. dollars a barrel on the New York Mercantile Exchange. Brent crude for November delivery added 51 cents, or 0.6 percent, to settle at 91.35 dollars a barrel on the London ICE F