As U.S. oil fell to a six-year low below $41 a barrel on Wednesday, an increasing number of analysts and traders are saying crude could drop into the $30s—and soon. The move to a price last seen at the height of the financial crisis, in February 2009, could come amid a seasonal falloff in demand, coupled with concerns about the Chinese economy and the continuing global glut of crude . Cheaper oil would bring further joy to consumers and businesses around the globe, but more pain for everyone from Russian budget officials to U.S. shale-oil drillers. It would also test the limits of oil storage facilities around the globe, which are already filling up to the brim. A 40% price rally in the spring took oil to above $60 a barrel, offering hope that the worst of oil’s yearlong slump was over as investors bet that low prices would […]