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MEZZOUNA


GEOGRAPHICAL SETTING

The Mezzouna block is located in Central onshore Tunisia.

ACREAGE

4052km².

GEOLOGICAL SETTING

MEZZOUNA block is crossed by the southern part of the North-South Axis that separates the central Tunisian Atlas to the west and the Sahel plains to the east. The area is characterized by a variety of structural features including N-S (J. Zebeus, J. Gouleb, J. Sif, and J. El Akrouta.), NE-SW (J. Goubrar, J. Kchem Artsouma.) and E-W (Jebel Meloussi, Jebel Bouhedma) trending folds and wrench faults. In addition to Triassic diapirs which are being active since the Late Cretaceous-Eocene time.

PETROLEUM SYSTEM

Reservoirs and Seals

  • The Jurassic Lower and Upper Nara dolomites are the primary and well-sealed reservoirs. They tested oil and minor condensate in ABK-1well.
  • Clays and marls of the Sidi Khalif Formation provide an excellent seal for NARA reservoir.
  • Tha Aptian Orbata carbonates and Lower Cretaceous sandstones may be considered as additional reservoirs for the block.
 

Source Rocks

  • The Toarcian Middle Nara black shales are considered as primary, good and mature source rock within the block.
  • The Triassic Carnian shales can be considered as a potential source rock in the area.
 

Traps

The main traps types are faulted anticlines, faulted block and pinchout, salt related traps.



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