Oil prices slipped for a sixth straight session Thursday, dragged down by market jitters over the looming U.K referendum and mixed U.S. oil data. Crude prices have been on a downward streak for days, first pushed down by the prospect that the decline in U.S. shale production since April last year could be reversing as the number of drilling rigs rises. The U.S. oil benchmark was down 2.2% at $46.97 a barrel on the New York Mercantile Exchange, while the global Brent contract was down 2% at $47.98 a barrel on the ICE Futures Europe exchange. Oil has been moving lower in concert with global stocks, which have sold off in recent days amid fears that a British vote to exit the European Union, or ‘Brexit’, will disrupt financial markets and the economy. Opinion polls ahead of the June 23 referendum have narrowed in recent weeks. On Thursday, U.S. […]