Arid
DOI10.1144/petgeo2016-163
Basement-cover reservoir analogue in rift-margin fault blocks; Gulf of Suez Rift, Sinai, Egypt
Braathen, A.1; Fattah, M. M. Abdel2; Olaussen, S.3; Abdel-Gawad, G.2; Ogata, K.4
通讯作者Braathen, A.
来源期刊PETROLEUM GEOSCIENCE
ISSN1354-0793
出版年2018
卷号24期号:4页码:449-468
英文摘要

Faults, fracture systems, weathering profiles and cover sediments of granitic basement in the rift shoulder of the Gulf of Suez Rift (Sinai, Egypt) are useful conceptual analogues for basement-cover reservoir fields. Outcrops demonstrate that fracture intensity peaks adjacent to major faults, and declines in damage zones that stretch to the background fracturing level over distances of 150 m. In the rift shoulder, smaller faults have damage zones that are 30 - 40 m wide with 1 - 5 m-wide fracture corridors. Faults show chemical alteration extending hundreds of metres into basement, with characteristics similar to saprolite in schists, mafic rocks and granitoids. Cover sandstones fill and drape top-basement relief, as recorded by metre-thick basal fluvial coarse sandstones, hosting kaolinite both as diagenetic pore fill and clastic grains. Overlying floodplain to marginal-marine deposits consist of mature quartz arenites.


Strategies for production of hydrocarbons or groundwater from basement-cover reservoir couplets should consider a layered system with: (i) deep tight basement of minimal porosity (c. 1%) hosting producible fractures and faults in a plumbed system with potential thief zones; (ii) top-basement weathering profiles capping granitoids representing a volumetrically considerable reservoir; and (iii) draping cover sandstones showing good reservoir properties, and representing the most homogenous unit. Diagenetic modifications of saprolite, fault rocks and fractures potentially baffle recharge between layers.


类型Article
语种英语
国家Norway ; Egypt ; Netherlands
收录类别SCI-E
WOS记录号WOS:000449574000009
WOS关键词CAMBRIAN ARABA FORMATION ; FRACTURE CORRIDORS ; TECTONIC EVOLUTION ; EASTERN DESERT ; SOLAF REGION ; SANDSTONES ; SYSTEMS ; ROCKS ; CRYSTALLINE ; PROVENANCE
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/212069
作者单位1.Univ Oslo, Dept Geosci, Box 1047, N-0316 Oslo, Norway;
2.Beni Suef Univ, Salah Salem St, Bani Suwayf 62511, Egypt;
3.Univ Ctr Svalbard UNIS, N-9171 Longyearbyen, Norway;
4.Vrije Univ VU Amsterdam, Dept Earth & Life Sci, Geol & Geochem Cluster, De Boelelaan 1085, NL-1081 HV Amsterdam, Netherlands
推荐引用方式
GB/T 7714
Braathen, A.,Fattah, M. M. Abdel,Olaussen, S.,et al. Basement-cover reservoir analogue in rift-margin fault blocks; Gulf of Suez Rift, Sinai, Egypt[J],2018,24(4):449-468.
APA Braathen, A.,Fattah, M. M. Abdel,Olaussen, S.,Abdel-Gawad, G.,&Ogata, K..(2018).Basement-cover reservoir analogue in rift-margin fault blocks; Gulf of Suez Rift, Sinai, Egypt.PETROLEUM GEOSCIENCE,24(4),449-468.
MLA Braathen, A.,et al."Basement-cover reservoir analogue in rift-margin fault blocks; Gulf of Suez Rift, Sinai, Egypt".PETROLEUM GEOSCIENCE 24.4(2018):449-468.
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