3D Integrated Structural, Facies and Petrophysical Static Modeling Approach for Complex Sandstone Reservoirs: A Case Study from the Coniacian–Santonian Matulla Formation, July Oilfield, Gulf of Suez, Egypt

Abstract The Coniacian–Santonian Matulla Formation is one of the important reservoirs in July oilfield, Gulf Suez Basin. However, this formation characterized by uncertainty due to complexity reservoir architecture, various lithologies, lateral facies variations and heterogeneous quality. These challenges, turn, affect effectiveness further exploitation along In work, we conduct an integrated study using multidisciplinary datasets techniques determine precise structural, petrophysical, characteristics predict their complex geometry 3D space. To complete study, 30 2D seismic sections, five digital well logs, core samples 75 ft (ft = 0.3048 m) length were used build models for reservoir. structural model shows strong variation thickness with NW–SE, NE–SW N–S fault directions. According model, shale beds dominate Formation, followed sandstone, carbonate, siltstone beds. petrophysical demonstrates reservoir's ability store produce oil; its upper lower zones have good quality reservoir, whereas middle zone a poor most promising areas hydrocarbon accumulation production via are located central, southeast, southwest sectors oilfield. approach, combined multiple likely parameters calibrated measurements improve modeling addition, reduced many common uncertainties associated static process, which can be applied elsewhere gain better understanding