Oil prices fell about 2 percent on Friday amid worries about a global economic slowdown, but futures ended the week higher, keeping some gains from a week-long rally spurred by U.S.-China trade hopes.
Friday's pullback marked the end of a nine-day winning streak for crude futures, the best string of gains since January 2010 for WTI and April 2007 for Brent.
Still, both benchmarks posted their second week of gains, with WTI rising about 7.5 percent and Brent up 6 percent.
Markets were supported earlier this week by hopes that an all-out trade war between Washington and Beijing might be averted. Three days of talks concluded on Wednesday with no concrete announcements, but higher-level discussions may convene later this month.