The boom in U.S. oil supplies will end in 2015, the Organization of the Petroleum Exporting Countries said Thursday, joining other major energy forecasters this week in pointing to an imminent fall in American production. In its closely watched monthly market report, OPEC said U.S. oil supplies would grow to about 13.65 million barrels a day in the second quarter of 2015 and then level off, beginning to decline in the second half of the year. The number includes crude oil and other petroleum liquids such as condensates. OPEC’s report comes after the U.S. Energy Information Administration forecast this week that total crude-oil production from seven key U.S. production regions would decline by 57,000 barrels a day in May from April. The International Energy Agency, which tracks oil data for Western countries, said Wednesday that American output […]