The Mrezga block is located in NorthEast offshore Tunisia within the Gulf of Hammamet.
The MREZGA block is located within the western margin of the Pelagian Platform. It corresponds to a part of a Mesozoic – Cenozoic province and corresponds to a faulted platform affected by dominantly east-west trending faults. The area was dominated by deep to shallow marine carbonate shale deposits during the Cretaceous and Paleogene and shallow marine siliciclastic deposits during the Mio-Pliocene. It was also subjected to a variety of transpressional/transtentional stress regimes, with associated structure reactivations and unconformities.
- The Middle Miocene Birsa sandstone layers producing oil in Oudna, Tazerka and Birsa concessions are the main reservoir.
- Intra Birsa Carbonates, Langhian Ain Ghrab bioclastic limestone, Campanian - Maestrichtian Abiod fractured limestone, Aptian Serdj bioclastic limestone are considered as second reservoirs target in the block
- The Albian lower Fahdene black shales and the Lower Eocene (Ypresian) Bou Dabbous limestone constitute the main and mature source rocks in the area.
- The Upper Cenomanian-Lower Turonian Bahloul laminated limestones. can be an additional source rock.
- The mainly trap types in the block are structural, including faulted anticlines, fault related traps and tilted blocks.