University of Khartoum

Facies Depositional Environment and Reservoir Quality of Ghazal Formation, Muglad Basin , Sudan

Facies Depositional Environment and Reservoir Quality of Ghazal Formation, Muglad Basin , Sudan

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Title: Facies Depositional Environment and Reservoir Quality of Ghazal Formation, Muglad Basin , Sudan
Author: Mohamed Abaker, Abdalla
Abstract: This study investigates the facies depositional environment, subsurface facies analysis, source area, petrographical characteristics of reservoir, of Upper Cretaceous (Campanian-Maastrichtrian) Ghazal Formation in the Muglad rift basin of interior Sudan. Method of this study included subsurface lithofacies analysis, heavy and clay minerals analysis, petrographical analysis and reservoir evaluation from five wells in Heglig and Unity Field. The lithofacies analysis revealed that Ghazal formation could be divided into three major units, namely fluvial dominated unit, fluvial-lacustrine dominated unit and lacustrine dominated unit. These units are divided into several single-story and multi-story sandstone bodies. The single-story sandstone bodies in the studied wells have average W:T ratios of (57:1), (64:1), (67:1), (85:1) and (59:1) respectively. The average sandstone bodies' widths are 108.3m (range 23-6036m), 272.5m (range 18.771370m), 1303.3m (range 705-4533m), 566.7m (range 45-1166m) and 340m (range 28.3-603.3m) respectively.
URI: http://khartoumspace.uofk.edu/handle/123456789/14156
Date: 2015-06-22


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