Kuwait is still in discussions with Saudi authorities on reviving production from the Khajfi field, which lies in the Divided Zone on their shared border, according to the Kuwaiti oil minister.

"There are simple matters that need to be thrashed out, then production will resume," Essam al-Marzouq told reporters on the sidelines of the Kuwait Oil and Gas Conference.

Kuwait and Saudi Arabia were reportedly considering reviving the shared fields towards the end of 2016, however, there has been no progress since.

The Al-Khafji field, which had been producing almost 300,000 barrels a day (b/d), was shut in October 2014, citing environmental reasons, while Wafra has been closed since May 2015 on operating difficulties.

Al-Khafji is operated by Al-Khafji Joint Operations Company, a joint venture of Kuwait Gulf Oil Company and Saudi Aramco subsidiary Aramco Gulf Operations Company (Agoc).

The Wafra field, which is operated by US-based Chevron on behalf of the Saudi government, has the capacity to produce 220,0000 b/d. Crude production from the two fields is equally divided between Kuwait and Saudi Arabia.