The northern part of the Western Desert seems to have passed through different
phases of deformations in the late Cretaceous, post-middle Eocene and middle Miocene
and the subsurface data indicated an early Mesozoic phase of normal faulting resulting of
the tectonic evolution of the northern Western Desert where several hydrocarbon fields has
been. Geophysical information in the form of seismic and well logging data are used to
understand the structural elements, tectonic setting and stratigraphy of the upper
Cretaceous rock units (Bahariya and Abu Roash Formations) in the Karama SW oil field,
northern part of the Western Desert. The interpretation of the available seismic data led to
the identification of the reflectors under investigation as well as to map and determine the
structural elements on the tops of the evaluated lithostratigraphic units. 3D Seismic lines
were used to construct four depth structure contour maps on the top of Abu Roash "C",
Abu Roash "E", Abu Roash "G" and Upper Bahariya Formations reflecting the occurrence
of major normal faults in various directions (mainly NW-SE) forming four way structural
traps in shallow reservoirs in down thrown side from major fault and also there way dip
closure.