Crude-oil futures slipped in Asian trade Wednesday after an industry report showed a surprise uptick in U.S. oil inventories and as investors were reluctant to boost positions ahead of Friday’s OPEC meeting. On the New York Mercantile Exchange, light, sweet crude futures for delivery in July traded at $60.91 a barrel at 0325 GMT, down $0.35 in the Globex electronic session. July Brent crude on London’s ICE Futures exchange fell $0.28 to $65.21 a barrel. Late Tuesday, the American Petroleum Institute reported an unexpected 1.8-million-barrel increase in U.S. oil stocks for the week ended May 29. The more definitive inventory data from the U.S. Energy Information Administration is due later Wednesday and markets expect a decline. U.S. oil inventory data, along with oil production levels, affect oil prices as traders and investors have been looking for any sign of how the U.S. shale industry will respond […]