The nuclear accord reached in Vienna on Tuesday could eventually reshape global oil markets. After almost two years of talks, the holder of the world’s fourth-biggest crude reserves will benefit from an easing of international sanctions on exports in return for curbs on its nuclear program, according to an official involved in the talks in Vienna. How Much More Oil Can Iran Produce? Iranian Oil Minister Bijan Namdar Zanganeh says the country can increase exports by 500,000 barrels a day as soon as sanctions are lifted, and then an additional 500,000 a day in the following six months. Iran produced an average of 2.8 million barrels a day this year. Goldman Sachs Group Inc. says adding 500,000 barrels a day will take about a year because Iran must first demonstrate its compliance with the terms of the nuclear accord and revive aging wells. Further expansion will need foreign investment, […]