Gum Deniz is an offshore oil and gas field in the Caspian Sea, located 21 km (13 mi) southeast of Baku, Azerbaijan. The field has been in operation since 1955. Gum Deniz has produced approximately 28.9 million tonnes of oil and 27 billion cubic meters of gas to date. In March 2009, Azerbaijan drilled its last well No. 478 in Gum Deniz field before new production sharing agreement for development of the field was signed with a foreign company in December 2009. The well produces 50 tonnes of oil on daily basis.