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OUTCROPS-SUBSURFACE LITHOSTRATIGRAPHIC CORRELATIONS OF THE BIRENO CARBONATIC RESERVOIR IN CENTRAL TUNISIA

LANSARI Fathia, Troudi Habib, NEGRA Mohamed Hédi, 2010

Tunisian Petroleum Exploration and production Conference, 1, 32, 8, Octobre 2010

Résumé

 

The present study targets the Bireno reservoir in central-eastern Tunisia where it produces oil and gas in several fields such as Gremda, Rhemmoura, El Ain, Guebiba, El Hajeb and Mahares. The Bireno reservoir which is Early to Middle Turonian in age, mainly consists of carbonates deposited in a shallow marine environment.

A total amount of 233.25m of core from two producing wells in the Sfax area (well A and well B) was described in detail. On the basis of outcrop observations and log signature of subsurface wells, the present study proposes a new layering of the Bireno reservoir. The four distinguished units are partly correlatable with the three units already identified in the Fej Atroument type section of Jebel Bireno and also perfectly correlatable with the BG Tunisia subdivision (1993).