The chaffar block lies in eastern offshore Tunisia within the Pelagian Basin. The water depth is less than 100 m.
The CHAFFAR block is located in the Pelagian province and crossed by the NE - SW Kerkennah high. This later is developed during late Oligocene time and has remained a structural high to the present day. The block is a part of a Mesozoic-Cenozoic platform characterized by dominant carbonate sedimentation and affected by NW-SE trending faults that controlled facies distribution.
Reservoirs and Seals
- The main targets in Chaffar are: the Turonian Bireno bioclastic limestones and Coniacian oolitic Douleb limestones and the Lutetian Reineche nummulitic limestones.
- The Senonian Abiod fractured chalky limestone and the Aptian Serj reservoirs are considered as a potential reservoirs target.
- The Albian, the Santonian and the Maastrichtian shaly levels provide good seals to Cretaceous reservoirs.
- The Albian Lower Fahdene shales and the Upper Cenomanian-Lower Turonian Bahloul limestones are the main source rocks in the area.
- The Ypresian Bou Dabbous dark limestones are considered as an additional souce rock for the area.
- The seismic interpretation allowed defining several structural traps. These structures are mainly anticlines, faulted anticlines and Tertiary faulted blocks. Reef build-up could be considered as a stratigraphic trap target within the block.