Paleozoic Petroleum Systems in Ghadames Basin, Southern Tunisia

S036 PALEOZOIC PETROLEUM SYSTEMS IN GHADAMES BASIN SOUTHERN TUNISIA 1 HABIB TROUDI MOUNIR FERJAOUI DORSAF KEBAIER and MOHAMED HEDI ACHECHEI ETAP 27 bis Avenue Kheireddine Pacha BP 367 1002 Tunis Tunisia INTRODUCTION The Ghadames Basin is an intracratonic depression extending from western Algeria to Eastern Libya and encompassing the southernmost of Tunisia. It is a major hydrocarbon province as evidenced by the numerous producing fields. Until the mid-nineties most of the reserves occurred at the Triassic level. The contribution of Paleozoic horizons was insignificant and it was limited to three small size finds made in the Ordovician and in the