The Libyan authorities are doing their best to lift blockades of export terminals and to restart production and exports, but, despite a breakthrough in the west, the main politically motivated stoppages in the Sirte Basin are proving intractable. If eastern production remains blocked, National Oil Corporation (NOC) will struggle to lift production above 700,000-800,000 b/d, approximately half of the post-revolution peak. On 23 September, output had risen to 620,000 b/d from 240,000 b/d on 17 September. Fields supplying the Marsa Al-Brega terminal were contributing 160,000 b/d, and the western offshore fields exporting from the Bouri and Al-Jurf floating terminals were producing approximately 80,000 b/d.