This paper presents the results of the detailed petrographical analysis of sandstone samples from three wells from the offshore Ivorian Basin. The study reveals the presence of three types of sandstones in the Albian – Cenomanian succession, namely subarkoses, arkoses and lithic arenites, with dominant detrital minerals comprising quartz, feldspar and lithic fragments. The main authigenic minerals comprise calcite, siderite, silica, kaolinite and pyrite, while the key diagenetic events include compaction, dissolution and recrystallization of feldspar, neoformation and replacement of feldspar, and finally cementation. Primary pore spaces are reduced or occluded by calcite, silica, siderite and pyrite. Secondary porosity was created locally from the dissolution of feldspars but has been partly reduced by authigenic kaolinite. The presence of illitized kaolinite overgrowths and dissolved feldspars, together with significant quartz and the mainly concavo-convex and stylolithic contacts between quartz grains, suggest that the Albian-Cenomanian sandstones of the Ivorian Basin have reached an advanced stage of diagenesis. These diagenetic processes affect petrophysical values which varied as a function of depth.