Reservoir Quality Assessment of the Kafr ElSheikh Formation (Taurus and Libra Fields, Offshore West Nile Delta, Egypt): Integrating Well Logging, Petrophysical, and Petrographic Analyses

Menna H. Ali, Geophysics Department, Faculty of Science, Cairo University. 1 Gamaa Street, 12613, Giza, Egypt.Follow
Mohamed H. Khalil, Geophysics Department, Faculty of Science, Cairo University. 1 Gamaa Street, 12613, Giza, Egypt.
Aia M. Dahroug, Geophysics Department, Faculty of Science, Cairo University. 1 Gamaa Street, 12613, Giza, Egypt.

Article Type

Research Paper

Abstract

The assessment of the Kafr ElSheikh Formation (KEF) as a potential reservoir has been performed involving multiple techniques. Petrophysical, petrographic and welllogging analyses were conducted for the studied wells from the Taurus and Libra fields in the West Nile Delta, Egypt. The Winland pore throat radius (r35) method for rock type determination has been carried out to delineate different pore throat radius types within the KEF for better assessment of the reservoir quality. The petrophysical analysis reveals that KEF has an average porosity of 29% and an average permeability of 819 mD. Reservoir Quality Index (RQI) and Flow Zone Index (FZI) values for the formation reflect good reservoir quality, with a range of FZI reaching up to 20 μm. r35 for the studied wells shows a variety in pore throat radii within the KEF, ranging from nano- to mega-pores, with the dominance of mega-pores. Compaction, dissolution and cementation are the diagenetic features that affected the KEF with the existence of the authigenic clay minerals. However, the impact of these features on the quality of the reservoir was minor as the original network of pores had not significantly changed, in addition to the secondary porosity as a result of dissolution. Furthermore, qualitative and quantitative well-log interpretation was achieved to further assess the reservoir quality. The implemented techniques reflect a good reservoir within KEF.

Keywords

Well Logging; Petrophysics; Petrography; Reservoir Quality; Kafr ElSheikh Formation; Taurus& Libra Fields.

Recommended Citation

Ali, Menna H.; Khalil, Mohamed H.; and Dahroug, Aia M. (2026) "Reservoir Quality Assessment of the Kafr ElSheikh Formation (Taurus and Libra Fields, Offshore West Nile Delta, Egypt): Integrating Well Logging, Petrophysical, and Petrographic Analyses," Egyptian Journal of Petroleum: Vol. 35 : Iss. 3 , Article 5.
Available at: https://doi.org/10.62593/2090-2468.1116