Groupement Berkine is a petroleum joint venture between the Algerian Sonatrach (Soci�t� Nationale pour la Recherche, la Production, le Transport, la Transformation, et la Commercialisation des Hydrocarbures SPA) and the American Anadarko Petroleum Corporation through its subsidiary Anadarko Algeria Company LLC. The groupement is headquartered in Hassi Messaoud, Algeria.