Teheran: Iran's daily oil output rose by around 100,000 barrels with the opening on Tuesday of the second phase of Darkhovin field in the southeast of the country, the oil ministry's news agency reported.
Shana agency said Oil Minister Masoud Mirkazemi attended the opening, which raises the field's total output to around 160,000 barrels per day (bpd), from first phase production of around 50,000 bpd.
Iran's total output is running at around 3.7 million bpd, according to latest data from Organisation of Petroleum Exporting Countries (Opec).
The second phase of Darkhovin was developed by a consortium comprised of Italy's ENI, which signed a $1.3-billion contract, making it the largest Western firm operating in Iran, and local companies.
Most Western firms have exited Iran following sanctions imposed on Teheran over its controversial nuclear programme.
Iran is the second largest crude exporter in the Opec after Saudi Arabia, and it holds the world's second largest gas reserves after Russia.