Saudi Aramco has revealed it has 260 billion barrels of oil reserves and plans to increase natural gas output to 15.5 billion cubic feet a day by 2014, Bloomberg has reported. "To ensure availability and reliability, we have invested heavily in new developments to increase oil production capacity," Mohammed Al-Qahtani, the executive director of Aramco's Petroleum Engineering and Development unit said. "A lack of resources isn't a constraining factor."