Oil prices rose on Friday, helped by rising Chinese crude demand and threats of a strike in Africa's largest oil exporter, but U.S. crude still posted its biggest weekly loss in two months.
But prices were still on track for their second straight weekly loss amid concerns that rising U.S. production would undermine OPEC-led supply cuts aimed at curbing a glut.
U.S. West Texas Intermediate (WTI) crude futures ended Friday's session 67 cents, or 1.2 percent, higher at $57.36 a barrel. The contract fell 1.7 percent on the week.
Brent crude, the international benchmark for oil prices, was up $1.25, or 2 percent, at $63.45 a barrel by 2:26 p.m. ET (1926 GMT), but still heading for a weekly slide.