In the Gulf of Hammamet, the Serravallian Birsa Formation is considered a major target for hydrocarbon accumulations associated with folded and faulted structures. The study herein deals with a petrophysical assessment using the IP software and electrical logs analysis of drilled boreholes spanning the Serravallian reservoirs. The Birsa Formation comprises stacked sand reservoirs divided into three sub-units: the lower sub-unit is referred to as the Lower Birsa, the middle sub-unit is attributed to the Intra-Birsa Carbonate, also called IBC, and the upper sub-unit is particularized as the Upper Birsa. The layering of each sub-unit was achieved based on distinctive trends in the GR, sonic, resistivity, density, and neutron curves. These layers are identified between wells with eight sand bodies laterally correlated following a southwest (SW) to northeast (NE) trend. Proven hydrocarbons are encountered, especially in the IBC and lower sub-units of 0.5 to 11 m in pay thickness within a gross reservoir package of 100 m. The present petrophysical assessment shows that the Birsa sandstones are mineralized oil and gas and exhibit excellent reservoir quality, reaching 35% porosity and 1500 mD of permeability. Faulting and fracturing notably enhanced the reservoir potential of these series. MDT and LFA data, combined with core data are projected to be used to determine the fluid types and apply petrophysical parameters adjustment.