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The Sidi Salem block is located in central onshore Tunisia.


3072 km².


The SIDI SALEM block located within the Sahel platform and includes part of the north–south axis.

The block is characterized by a variety of structural features including N-S (Jebel Baten), NE-SW (Jebel Goubrar), NNW-SSE (Jebel Cherahil) and E-W (Jebel Cherichira) trending folds and wrench faults. During most of the Jurassic and Cretaceous, the area was a part of the transitional zone between the central Tunisia platform to the south and the northern Tunisia basins to the north.


Reservoirs and Seals

  • The Senonian Abiod chalky limestone is considered as a primary target in Sidi Salem open block. The reservoir quality is largely controlled by fracturation and locally Dolomitization. This reservoir is oil bearing in Sidi El Kilani Oil field located immediately to the east. The Paleocene El Haria shale provides the main seal.
  • The Jurassic Nara carbonates are considered as a secondary target. The Tithonian-Berrasian Sidi Khalif shale provides the main seal.
  • The Turonian-Coniacian Bireno/Douleb limestones, the Aptian Serj dolomitic limestones and the Barremian Sidi Aich marine sandstone are additional targets within the block.

Source Rocks

  • The Upper Cenomanian-Lower Turonian Bahloul laminated limestones constitute the main and mature source rock, at least towards the east.
  • The middle Jurassic Toarcian Chaabet Elataris shale can be an additional source rock.


  • A variety of different structural trap types occur, but most of the discovered hydrocarbons occur within faulted anticlines and salt dome-related traps.