Ain Tsila is a gas condensate field situated in the Illizi Basin, Algeria, located within the Isarene permit in Blocks 228 and 229a. The Ain Tsila field boasts reserves amounting to 2.1 trillion cubic feet of sales gas, alongside 67 million barrels of condensate and 108 million barrels of liquefied petroleum gas (LPG). Discovered in 2009 through the successful drilling of the Ain Tsila-1 well, this gas condensate field garnered significant recognition, ranking as the ninth-largest discovery globally for that year. Spanning an extensive area exceeding 1,000 square kilometers, Ain Tsila represents a substantial addition to the energy landscape.

In production since 2004, In Salah Gas is a joint venture between Sonatrach, BP and Statoil (now Equinor). It is Algeria’s largest dry natural gas joint venture and one of the country’s key gas export projects supplying Southern Europe. The project has a production capacity of approximately 9 billion cubic metres of dry natural gas per year from seven gas fields located in the central Algerian Sahara.