Abstract
Oil-Prone organic facies II of the marine Upper Cretaceous (mainly Campanian) Sirte Shale is characterized by its micritic facies. Located in the eastern Sirte Basin, it is significant in oil generation due to sufficient depth of burial for thermal maturation. This information is based on geochemical data collected over many years by the Petroleum Research Centre.
The combination of favorable organic facies and maturation level of the Sirte Shale defines areas of major oil generation in the Zella, Marada (Hafga Trough), and Ageadabia Trough. Giant oil fields tend to occur within short distance migration range from these oil-generative depressions.
The evolution of the various segments of the Sirte Basin, in terms of their remaining potential hydrocarbon prospects, can be made by employing conventional methods of petroleum geology in conjunction with precise knowledge of where and when oil was generated in the various segments of the basin.