 Besides Zelten, SOC is in charge of two other gas fields (Attahadi and Assumud) plus the Brega liquefied natural gas (LNG) plant.There is one dominant petroleum system in the Sirte Basin sourced by the Cretaceous Sirte Shale.In the Central Sirte Basin, carbonates of Upper Cretaceous, Paleocene and Eocene age produce in 150 fields on significant horst blocks or platforms (e.g., the Beda and Zelten platforms).