Fighters from the Islamic State (IS) carried out a damaging attack on the 170,000 b/d Bai Hasan field in Kirkuk province on 31 July. The field was offline for one day, and while output has since resumed, it appears to be at a much-reduced rate.

Bai Hasan and the Avana Dome of the Kirkuk field were operated by Iraq’s North Oil Company (NOC) until mid-2014, when the Kurdistan Regional Government (KRG) seized the area to prevent it from falling into the hands of IS. They have since been...