The 3,024-sq km (1,167-sq mi) concession contains the El Mediouni discovery drilled by the EMD-1 well in August 2014. This encountered oil shows in the Ketatna (Oligo-Miocene) carbonates.
Although mud losses prevented acquisition of log data, the shows appear to indicate a significant hydrocarbon resource.
Circle adds that the permit holds numerous other similar prospects which it is keen to explore in greater detail.
The license extension carries a commitment for one exploration well and one appraisal well, and acquisition of 300 sq km (116 sq mi) of 3D seismic.
Circle, which has a 100% interest, will look to bring in partners to help evaluate and develop El Mediouni and other prospects.
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