Algeria’s key foreign oil producer added 50,000 b/d in Q3, boosting the country’s total output to the highest level this year. Gas output may also rise later this year. But the long-term trend remains resolutely down.

Algeria’s oil production has received a boost with output at the El Merk field in the Berkine Basin – the country’s only sizable oil start-up of recent years – rising to a record 165,000 b/d in Q3. The nearby Ourhoud field, long in decline,...