Unveiling Reservoir Dynamics: Influence of Mineralogy and Rock Architecture on Petrophysical Properties in the Bahariya Formation, Gebel El Dist, Western Desert, Egypt

Antoine W. Guirguis, Department of petroleum and Energy Engineering, American University in Cairo, P.O. Box: 11835 Cairo, EgyptFollow
Abdel Moktader A. El Sayed, Department of geophysics, Faculty of science, Ain Shams University, Cairo, Egypt
AbdelAziz Lafi Khlaifat, Department of petroleum and Energy Engineering, American University in Cairo, P.O. Box: 11835 Cairo, Egypt
Ahmed Abd Elmoneim A. Sharaf-Eldin, Department of Geology, Ain Shams University, Cairo, Egypt
Ashraf Rushdi M. Baghdady, Department of Geology, Ain Shams University, Cairo, Egypt

Article Type

Research Paper

Abstract

This study focuses on the surface analogy of the Bahariya reservoir, located in Gebel El Dist. It includes mineralogical, architectural and petrophysical investigations on its rock types. Three sandstone facies are recognized in the Section, these are: quartz arenite (QA), quartz wacke (QW), and mudstone (M). The X-Ray Diffraction Analysis (XRD) revealed that these facies are composed of quartz, feldspars, dolomite, pyrite, siderite goethite, hematite, clay minerals, glauconite, and gypsum. These minerals represent the grain framework and binding materials of depositional and diagenetic origin. The quartz arenite and the quartz wacke facies represent the two main types of reservoir rocks in the studied section. The conducted laboratory measurements addressed both reservoir rock and fluid properties. The measured petrophysical and fluid properties are helium porosity (ϕ), grain density (ρ_g), gas permeability (k), cementation index (m), saturation (n) exponent. The acoustic velocities and all related Elastic moduli were measured as well. All results were statistically analyzed to obtain several meaningful and/or applicable relationships. The raised petrophysical models relate minerals proportion deduced from the XRD to the laboratory measured petrophysical properties. These models were found beneficial in reservoir evaluation and confirming the impact of the mineralogy and the rock architecture on these characteristics.

Keywords

Texture, mineralogical, Reservoir, Petrophysics, Bahariya Formation, Gebel El Dist, Egypt, Acoustic wave velocity

Recommended Citation

Guirguis, Antoine W.; Sayed, Abdel Moktader A. El; Khlaifat, AbdelAziz Lafi; Sharaf-Eldin, Ahmed Abd Elmoneim A.; and Baghdady, Ashraf Rushdi M. (2024) "Unveiling Reservoir Dynamics: Influence of Mineralogy and Rock Architecture on Petrophysical Properties in the Bahariya Formation, Gebel El Dist, Western Desert, Egypt," Egyptian Journal of Petroleum: Vol. 33 : Iss. 4 , Article 1.
Available at: https://doi.org/10.62593/2090-2468.1050