Detailed petrophysical analysis and insights into the Alam El Bueib 3E reservoir from the berenice field, Western desert, Egypt.

This study presents a comprehensive petrophysical assessment of the Alam El Bueib 3E (AEB-3E) sandstone reservoir in the Berenice Oil Field, located within the Faghur Basin, Western Desert, Egypt. The main objective is to evaluate reservoir quality, hydrocarbon potential, and lateral continuity to support effective field development strategies. The analysis is based on wireline log data from four wells: Berenice-TD-1X, Berenice-03, Berenice-08, and Berenice-09. Lithological analysis using M-N and RHOB-NPHI crossplots confirms that the reservoir is predominantly composed of clean sandstone, with limited shale and siltstone interbeds. Hydrocarbon-bearing intervals were identified between 11,150 and 11,190 feet based on neutron-density separation, resistivity log responses, and indicators of movable hydrocarbons. Formation water resistivity (Rw = 0.0378 Ω·m) and Archie parameters (a = 1, m = 1.9, n = 2) were derived from Pickett plot analysis in the Berenice-08 well, providing a basis for water saturation estimation in the absence of core data. The reservoir exhibits low shale content (3-8%), with effective porosity reaching up to 18%, particularly in the southeastern part of the field. Water saturation ranges between 28% and 54%, and the net pay intervals align well with hydrocarbon-bearing zones. Structural mapping and well correlation indicate consistent reservoir thickness, with central thickening influenced by ENE-WSW trending normal faults. Seismic interpretation reveals horst and graben structures that contribute to reservoir compartmentalization. The petroleum system is supported by mature source rocks of the Safa Formation, in addition to effective intraformational and regional seals, which enhance hydrocarbon entrapment. The results of this study contribute to a clearer understanding of the petrophysical and structural characteristics of the AEB-3E reservoir, offering valuable insights for future development and exploration efforts in the region.