الفهرس 
INTRODUCTIONOnly 14 pages are availabe for public view
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Abstract
It has been inferred through the studying of the previous works that the Jurassic ”Khatatba” Formation sands serve as one of the main pay zones in North Western Desert. Furthermore, Khatatba was interpreted to be one of the main source intervals for hydrocarbons. The study area, North East Abu Gharadig (NEAG), is one of the potential oil/gas fields in the Western Desert operated by Shell N.V. Hence, the objective of this study is to simulate a 1D model of the petroleum system in the area of interest through a petrophysical interpretation and geochemical evaluation tied to the tectonics and the structure regime of the area to provide a proper understanding of basin-fill history and hydrocarbon prospecting. Accordingly, a fully integrated dynamic geologic 1D model on two well locations (JD-4 and JG-2) of the North East Abu Gharadig field was performed to reveal the fact that Khatatba Organofacies buried to optimum depths for thermogenic liquid hydrocarbon generation (%Ro values range of 0.53-0.55%) of 2208m-2329m at JD-4 well. Moreover, gas thermogenic (%Ro values range of 0.78-0.79%) of 4233m-4361m and oil expulsion (%Ro values range of 0.59-0.66) of 2487-2849m. The only gas expulsion occurred at depth 4449m with much higher vetrinite reflectance value of %Ro (0.81%). In contrast, the Khatatba organofacies at JG-2 well buried to depths of 2273m-2901m for thermodynamic liquid hydrocarbon generation (%Ro values range of 0.61-0.62%) with thermodynamic gas generation and first oil expulsion starts since Miocene. An analysis of the spatial distribution of significant discoveries (oil and/or gas) from Khatatba Formation in NEAG concession indicated the alignment of the discoveries along northwestward direction. In addition, the spatial distribution of the Khatatba organofacies (II , II-S, II-III and III) are aligned NW-SE (southeastward JD-4 well) perpendicular to the NE-SW Jurassic Fault System, where geological conditions are more favorable (thick sediment basin-fill and deeper burial at JD-4 well) than northwestward JG-2 well for thermogenic hydrocarbon generation. Thus, the expelled thermogenic hydrocarbon (oiland/or gas“wetand/ordry”), possibly migrated laterally and near vertical from the southeastern part to the updip north-western part through the NE-SW fault plane into shallower reservoirs to depths up to 2908m since Late Cretaceous.