Fig. 1

(a) Location of the October Field (yellow) within the structural framework of the Gulf of Suez Rift Basin (GSRB), showing major hydrocarbon fields (green) and regional faults. (b) Data distribution map illustrating the 2D seismic lines (black) and well locations (red) used in this integrated study. (c) Generalized tectono-stratigraphic column for the October Field, highlighting the pre-rift reservoir intervals (Nubia, Matulla) and key elements of the petroleum system.