The Nahr Umr field (also known as Bin Umr) was discovered in 1949 in the southern province of Basra, around 20 kilometres north of Basra city. It has estimated reserves of more than 6 billion barrels of oil, and is one of several giant oil fields in southern Iraq that have been appraised but not fully developed. The field currently produces around 30,000 b/d, but has the potential to ramp up to more than 400,000 b/d. Limited production facilities were installed in 1998 by Iraq's South Oil Company, and the field has been producing at low rates throughout the last decade. It has enormous gas potential, with estimated total associated gas reserves of 12 tcf. This is a significantly higher gas-oil-ratio compared to Iraq's other major southern oil fields. At the moment small volumes of associated gas are supplied to the Basrah Refinery.