Iran may only be able to deliver about half of the promised surge in crude output after sanctions are lifted as it struggles to revive idled fields, according to banks including UBS Group AG and Saxo Bank A/S. The Persian Gulf nation will increase crude oil production by 100,000 barrels a day, or 3.7 percent, a month after sanctions are lifted and by 400,000 in six months, according to the median estimate of 12 analysts and economists surveyed by Bloomberg. Oil Minister Bijan Namdar Zanganeh has pledged to boost output by half a million barrels a day within weeks of the end of sanctions and by the same amount again in six months. The strictures may be removed as soon as Jan. 18. “After years of sanctions and under-investment, I doubt Iran can just turn up the volume quickly,” Ole Hansen, head of commodity strategy at Saxo Bank in […]