The Lithostratigraphic Analysis and Petrophysical Characterization of the Campanian-Maastrichtian Formation in the Pelagian Basin (Northeast Tunisia)

Autor: Klaus Bauer, Abdelhamid Ben Salem, Fetheddine Melki, Wafa Abdelkhalek, Michael Weber
Rok vydání: 2018
Předmět:
Zdroj: The Structural Geology Contribution to the Africa-Eurasia Geology: Basement and Reservoir Structure, Ore Mineralisation and Tectonic Modelling ISBN: 9783030014544
DOI: 10.1007/978-3-030-01455-1_42
Popis: The Campanian-Maastrichtian formation was studied and defined in a Pelagian basin, mainly, in the Sidi El Kilani oil field. The carbonates of the Abiod formation are considered as a potential reservoir for several years. The present study aims to characterize the lateral variation in thickness and lithology of the Abiod reservoir based on borehole lithology logs and electrical well logging. This chalky carbonate shows a relevant porosity and permeability variance. Furthermore, the subsurface data have allowed recognizing the internal architecture of Pelagian Basin which is a stable domain, but also a rather a complex structural domain. The sedimentary facies of the Abiod formation (Campanian-Maastrichtian) have been guided by the existence of deep faults and older structures which evolved into major E-W and N-S faults and characterize the geodynamic structures and tectonic framework. The structural framework based on the major structures controls the existence of the deep reservoir and its distribution in the basin. Throughout the reservoir of the Abiod formation, areas are widespread where there is relevant thickness and relevant porosity, particularly along the major faults corridors and in the summit parts of the main anticlines.
Databáze: OpenAIRE