Thesis (Ph.D.) - Cairo University - Faculty of Science - Department of Geology

The komombo basin in upper Egypt is a half-graben system and contains thick non-marine sediments deposited during early cretaceous to barremian foll owed by marine deposition during cenomanian/Albian (shoaly sandstones and shales) and later shales and marine limestones during late cretaceous and early tertiary. Two main reservoirs are producing in Komombo basin, the first one belongs the Neocomian cycle and the second is belonging the cenomaian/Albian cycle. Siliciclastic sandstone reservoir is the dominant reservoirs with sand silt clay intercalation are the main lithology in the reservoir section. The Neocomian shale source rock deposited in komombo basin area is evaluated as adequate potential source rock which can generate hydrocarbons in komombo basin. It is buried in deep depths (>8000ft) in the troughs and had been affected by many tectonic phases. Oil out of the source rock are generated at a high thermal maturity (about 0.95% Ro equivilant) from lacustrine shales

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