Oil falls on weak China demand

US crude hit contract lows, trading about $1 above its bottom for 2015. Brent, the global benchmark, lost most gains from a Monday rally, heading for its largest decline in a week.
Opec projected that oil supplies from countries outside the group will rise by 90,000 barrels per day this year, a sign the crude price collapse was taking longer than thought to hit the North American shale oil industry and other competing sources.