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BENI KHEDACHE


GEOGRAPHICAL SETTING

The Beni Khedache block is located in southern onshore Tunisia in the vicinity of Jebel Grouz field and around 50 Km north of El Borma Oil Field and 20 Km north of the Sanrhar Fields

ACREAGE

3972 km².

GEOLOGICAL SETTING

The BENI KHEDACHE block is located in the Saharan platform. It comprises part of the subcropping Telemzane Arch and the northern edge of the Ghadames basin. The subcropping Cambro-Ordovician clastics are unconformably overlain by Middle Triassic fluvial sandstone. This evolution is somewhat similar to that of Hassi Messaoud ridge in Algeria.

PETROLEUM SYSTEM

Reservoirs and Seals

  • The main Triassic TAGI fluvial sandstone is considered as a primary target in the block. This reservoir is an oil and gas proven reservoir in Jebel Grouz, Sanhar, El Borma and Makhouga fields.
  • Shales and anhydrites above the TAGI reservoir provide excellent seal capacity.
  • The Cambro-Ordovician sandstones were regarded as secondary targets.
 

Source Rocks

  • The Lower Silurian Tannezuft “Hot shale” is considered as the main souce rock in the bock.
 

Traps

  • The trapping system in the zone includes tilted fault blocks, low amplitude anticlines and stratigraphic traps (pinch out, channel fill, unconformities). Combination tarps also exist.


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