New York’s main contract, light sweet crude for September delivery, was down 17 cents to USD 75.60 a barrel in morning trade.
Brent North Sea crude for delivery in October tumbled 30 cents to USD 76.63.
Prices had rallied on Tuesday to snap five straight days of losses on the back of a weaker dollar and rising equities.
Analysts said investors were taking profits because of concerns over the global economic outlook for the second half of the year, which could impact on energy demand.
While US industrial output recovered in July after dropping for the first time in a year, there were still problems in the housing market in the world’s biggest economy.
Industrial output rose 1.0 per cent in July from a revised contraction of 0.1 per cent a month earlier, the Federal Reserve said, beating market expectations for a 0.6 per cent jump.
But recent data from the housing market showed the sector was still struggling to emerge from a slump.
Construction of new homes in the US edged up in July but permits issued for future housing construction plunged, the government said.
Construction starts on privately owned homes rose by a less-than-expected 1.7 per cent.
DBS Bank said the data confirmed that “housing starts remain just about at rock bottom.”
US economic data are closely watched by the oil market because America is a major energy consuming nation.