This work is an attempt to convey the significant role of integrated geological interpretation techniques
for constructing robust geological model in one of the most complicated and poorly seismically imaged
reservoirs in the Southern Gulf of Suez rift basin. An Example has been taken from syn-rift Langhian and
Early Serravallian reservoirs that are represented by Upper Rudeis and Kareem stratigraphic sequences.
The bad seismic quality is the result of big thickness of Late Miocene evaporites. This hinders the
construction of a reliable subsurface geological model of sub-salt reservoirs. As well, many geological and
engineering challenges have been recognized particularly in these reservoirs. The 3D geological modeling
techniques have been applied after the conventional geological interpretation to acquire more geological
reasonability and geometric validity of the study reservoirs. The concerned section of Amal field has been
subdivided into four different reservoirs; two of Upper Rudeis Member (UR2 & UR1) and two of Kareem
Formation (Markha & Shagar). Only, the Upper Rudeis unit-one (UR1) records noticeable influence of
syn-depositional fault movements on the thickness and facies pattern distribution. All these reservoirs
exhibit different reservoirs connectivity that in turn affects the production performance behavior through
the life of the field. This study could hold the key for the future field development plan and further
exploration in and around of the main producing zones.