المجلة الدولية للعلوم والتقنية

The Amal Reservoir of Pre-Upper Cretaceous Sandstone is a significant hydrocarbon reservoir in Concession 12, North-East Sirte Basin. The reservoir is unconformably overlaid by the Maragh Formation and unconformably underlain by a granitic basement. Eight wells have been studied in this project to build 3D structural and petrophysical models (porosity model, water saturation model, volume of shale model) represented by a 3D static geological model. Petrophysical analysis results revealed an average porosity of about 8.1–11.9%, a volume of shale of about 18%, water saturation of about 27.5%, and an average net pay thickness of about 15% of the gross thickness. Based on the log analysis, the analyzed wells' reservoir rock quality is fair to good in the area of the north-west and fair-poor in the south-east. Cross-sections of the porosity model show Water Saturation and Volume of Shale Models were built to illustrate the vertical and horizontal distribution of petrophysical properties in Amal Reservoir in Concession 12 of the Amal oil field. Key words: Amal Reservoir, Static Geological Model, Reservoir Rock Quality.