Algérie- partenariat dans le secteur des hydrocarbures

A general view of the headquarters building of Algerian state energy company Sonatrach in Algiers, Algeria, February 8, 2015. After a deep slide in oil prices, Algeria's state energy company Sonatrach is shifting strategy to offer foreign companies direct negotiations over 20 oil and gas fields in a bid to draw in wary investors and increase output. Picture taken February 8, 2015. REUTERS/Ramzi Boudina EDITORIAL USE ONLY. NO RESALES. NO ARCHIVE