Ghana has 5 billion barrels (790×10^6 m3) to 7 billion barrels (1.1×10^9 m3) of petroleum in reserves. A large oilfield which contains up to 3 billion barrels (480×10^6 m3) of sweet crude oil was discovered in 2007.[45] Oil exploration is ongoing and the amount of oil continues to increase.[46] Ghana produces crude oil, as of 15 December 2010, and until June 2011, Ghana exploited around 120,000 barrels per day and is expected to increase production up to 2.5 million barrels per day in 2014.[47][48]