CNBC | US oil posts worst settlement since April 20, closes 3.7 pct lower, at $40.06 CNBC Production in July by the Organization of the Petroleum Exporting Countries likely rose to its highest in recent history, a Reuters survey found on Friday, as Iraq pumped more and Nigeria squeezed out additional crude exports despite militant attacks ... Oil dips below $40 a barrel as bears seize on glut fears Oil plunges below $40 per barrel US crude breaks below $40/bbl as oil dives 4 percent on glut worry |