Optimism about trade talks and news about the potential for more oil supply from Venezuela moderated oil prices and prevented them from rising.
Brent crude futures were down 1.07%, at $68.44 a barrel while West Texas Intermediate(WTI) crude futures were down 1.32%, at $65.16 on Friday. Brent was heading for a 1.4% weekly loss at that level, while WTI was down around 1.7% from where it closed last week.