Early Cretaceous clastic and carbonate reservoirs in Central Tunisia: Characteristics and prospectivity.
Leaders : H. Troudi, A. Ouahchi, M. Saidi, M. Soussi.
The outcrops of Central Tunisia offer an excellent opportunity to study the subsurface reservoirs analogs. During this field trip we attempted to investigate the characteristic of the Early Cretaceous reservoirs which constitute an emerging play in both central onshore and offshore Tunisia.
Sedimentary characteristics, depositional environments and the geometry of Early Cretaceous siliciclastics reservoirs including deltaïc, estuarian and coastal marine siliciclastic reservoirs of Sidi Khalif deep marine sandstones, Melloussi dolomites and sandstones and Beddoulian-Barremian sandstones well known as Bedbars will be discussed.
For the Aptian carbonate Serj reservoir a special attention will be reserved to the diagenetic modification related to the sea level fall and the impact of unconformities on reservoir behaviour (Dolomitisation and Karstification,..). Aptian Serj play fairway will be discussed and compared with subsurface examples.
Field Trip F2
The Jurassic-Early Cretaceous in South-Eastern Tunisia: Tectono-stratigraphic events, geodynamic evolution and petroleum systems.
Leaders : Hela Fakhfakh Ben Jemia, Sami Khomsi, Sofiane Haddad and Oussama Echihi.
The two-days field trip deals with the Jurassic and Early Cretaceous series well outcropping along the Dahar. The sedimentary infill of this time span, recording the Tethyan opening events, allows to constraint accurately the structural and sequence stratigraphy framework and to decipher its geodynamic evolution. Many issues regarding the petroleum systems and exploration play concepts in the Southern Gulf of Gabes (Ezzaouia, Robbana, El Bibane discoveries…) will be discussed on the basis of subsurface data in the Jeffara area.