Geological and Petrophysical Modeling of the Reservoir in the Ben Kahla Region South Algeria.

Abstract

The Ben Kahla reservoir, located in Algeria’s Ouargla province within the Ouad Mya basin of the Triassic Houad Berkaoui formation, stands out as one of the region’s most productive oil fields and has been under active exploitation for many years. Its geological structure is highly integrated, consisting of Silurian shale as the source rock, Triassic sandstone with varying clay content as the reservoir rock, and a Liassic evaporitic salt layer serving as a cap rock—all sealed by effective structural traps. Recent geological studies pointing to additional untapped potential in the southern area have spurred several companies to undertake exploration efforts and develop a comprehensive 3D geological model using Petrel software. This model integrates crucial data such as porosity (Φ), fluid saturation (Sw), and reservoir thickness, derived from well logs and petrophysical evaluations. These results enable us to conduct dynamic simulations that enhance understanding of fluid behavior within the reservoir, and support more informed and efficient extraction strategies.