Sonatrach (Société Nationale pour la Recherche, la Production, le Transport, la Transformation, et la Commercialisation des Hydrocarbures s.p.a.) is an Algerian government-owned company formed to exploit the hydrocarbon resources of the country. Its diversified activities cover all aspects of Oil & Gas industry chain. Upstream (E&P), Midstream (Transport) and Downstream (Marketing, Refining and Petchems).