Journal
MARINE GEOLOGY
Volume 413, Issue -, Pages 48-70Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.margeo.2019.04.004
Keywords
Diagenesis; Facies; Reservoir quality; Rudeis Formation; Gulf of Suez; Early Miocene
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Studying sedimentary facies and diagenetic peculiarities are highly important for the understanding of carbonate -reservoir quality, including those of relatively poorly-known areas of great economic importance. The Early Miocene Rudeis Formation (similar to 60-191 m thick) is composed mainly of fractured/stylolitic, vuggy/moldic, bio-clastic coralline/algal dolostone and biogenic limestone, with common occurrences of pore-filling anhydrite and pebble-sized anhydrite nodules. The diagenetic characteristics of the formation in the Zeit Bay Field (Gulf of Suez, Egypt) affect its reservoir quality, as can be deduced from the analysis of cores from six boreholes. Compaction, anhydritization, cementation and micritization decreased the reservoir quality, whereas dissolution, stylolitization and microfracturing enhanced the production potential.
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