Oil prices slide on China worries, supply glut
Crude oil futures fell on Friday, bringing losses this month to close to 9 percent, as disappointing Chinese data and worries over a supply glut overshadowed geopolitical concerns.
The U.S. dollar, which stood close to nine-month highs versus a basket of other currencies, also weighed on oil. Strength in the greenback makes oil more expensive for holders of other currencies.