Oil prices extended their fall on Thursday, ahead of key U.S. data expected to show a further increase in oil supplies. U.S. crude stockpiles are already near levels unseen in decades and their growth adds to the persisting glut of crude around the world, which has battered the market for nearly two years. Worries about China’s economy , world’s second biggest crude consumer, have aggravated the oversupply fears, driving oil prices down by more than a quarter since the beginning of the year. On Thursday, March-dated Brent crude, the global oil benchmark, fell 0.9% to $27.63 a barrel on London’s ICE Futures exchange. On the New York Mercantile Exchange, West Texas Intermediate futures for March were trading down 1% at $28.08 a barrel. Both benchmarks fell to their lowest levels since 2003 on Wednesday. The American Petroleum Institute, an industry group, reported late on Wednesday that U.S. crude stockpiles […]