... Characterization Upstream Oil & Gas tricyclic terpane belhaj mohamed structural geology organic matter shale Tunisia southern tunisia petroleum potential sterane terpane source rock characteristic hopane Thickness Chott basin hot shale high proportion source rock regular sterane TOC...

.... The analysis of different sources rocks from the Central and Meridional Atlas of Tunisia indicates that the Albian Lower Fahdene Fm has a substantial oil-generation potential. The Cenomanian-Turonian Bahloul Fm exhibits fair to high organic matter content and petroleum potential and is immature to mature...

... suggesting that the Fegaguira Formation was originally rich in type II organic matter (oil and gas prone kerogen), maturity ranges from 0.7 to 1.1 % R 0 , transformation ratio is about 0.78% and quartz richness up to 16%. Detailed framework studies in petroleum geochemistry, lithostratigraphy and mineralogy...

... at about 160 Ma. The Hercynian unconformity surface was the main drain of secondary migration in the basin. petroleum potential organic matter maturity upstream oil & gas correlation history structural geology oil sample hot shale tunisia expulsion terpane source rock hydrocarbon...

... that the gases are dominated by methane (97%-100%) and the light carbon isotopic composition (δ 13 C1) values (−57.4‰ to −80‰) suggest that these gases are derived from the decomposition of immature (0.3-0.6 Ro%) sedimentary organic matter by Methanogens activity under relatively low temperatures (<80°C...