Sonatrach is facing a “deep audit” by the Algerian state, while the company also attempts to control costs.
Statoil’s boss in Algeria said the recent attempted terrorist attack in the country was a “wake-up call” for the company.
Statoil employees have left Algeria just a couple of weeks after the gas plant where they worked was attacked by terrorists.
Oil major BP and Norwegian operator Statoil said they will pull staff from two gas plants in Algeria following an earlier attack.
Algeria’s army has killed four militants, who authorities believe are responsible for Friday’s gas plant attack.
BP has confirmed start-up at its In Salah Gas project in Algeria.