The global oil glut will persist into 2017, limiting any chance of a price rebound in the short term as the surplus takes even longer to clear than previously estimated, according to the International Energy Agency. While U.S. shale oil production will retreat this year and next as the price slump hits drilling, its subsequent recovery will ensure America remains the biggest source of new supply to 2021. The Organization of Petroleum Exporting Countries will expand its market share slightly this decade, with Iran, newly released from international sanctions, displacing Iraq as the organization’s biggest contributor to supply growth. “Only in 2017 […]