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Article Type

Research Paper

Abstract

The present study represents an integrated geophysical and petrophysical investigation in view of Miocene Kareem Formation reservoirs in the Southern Gulf of Suez Basin (GOSB), with particular interest in the offshore Tawila West Oil Field (TWOF). In this context, seismic interpretation in the present study is integrated with wireline log data from four important wells: TW-1, TW-2, TW-5 ST3-A, and TW-6, in delineating the characteristics of the studied reservoirs and fault systems associated with an estimate of hydrocarbon prospectivity. Seismic-stratigraphic analysis revealed two major reflectors that represent the top and base of the Kareem Formation, which were mapped on depth-structure grids and seismic sections. Contouring yielded obvious NNW-SSE and NE-SW fault trends forming graben systems with considerable vertical displacements. An isopach map also shows the variation in thickness of the Kareem Formation significantly across the study area in a fault-controlled manner. Petrophysical analysis further supports the hydrocarbon potential of the reservoir, which shows an intermediate total porosity of 16-17%, effective porosity of ~12%, high hydrocarbon saturation of 70-75%, and substantial pay zone thicknesses of 60 to 75 feet. These findings enhance the understanding of Kareem Formation reservoirs and offer valuable guidance for future hydrocarbon exploration and development in the GOSB.

Keywords

Miocene reservoir; Kareem Formation; Gulf of Suez Basin; Tawila West Oil Field; Geophysical Appraisal

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