干旱区生态环境知识资源中心(Arid): Step-drawdown test as a tool for the assessment of the Nubia sandstone aquifer in East El-Oweinat Area, Egypt

Arid

DOI	10.1007/s12665-019-8375-0
	Step-drawdown test as a tool for the assessment of the Nubia sandstone aquifer in East El-Oweinat Area, Egypt
	Nabawy, Bassem S.1; Abdelhalim, Ahmed 2; El-Meselhy, Ahmed 1
通讯作者	Nabawy, Bassem S.
来源期刊	ENVIRONMENTAL EARTH SCIENCES
ISSN	1866-6280
EISSN	1866-6299
出版年	2019
卷号	78 期号:13
英文摘要	The Cretaceous Nubia sandstone aquifer is the main aquifer in East El-Oweinat area along the Egyptian-Sudanese borders and in NE Africa. East El-Oweinat project has been recently considered one of the main agricultural projects in the southwest of the Egyptian Western Desert. So, the hydrogeological assessment for the Nubia aquifer in East El-Oweinat area has been done through studying and characterising the hydraulic parameters and step-drawdown test. The well and aquifer losses coefficients (C and B, respectively), the specific capacity, and the well efficiency as well as the aquifer and aquitard thickness have been estimated and traced through a total of 46 wells that have been distributed through the study area in two sectors, southern and northern. For the purpose of further exploration, the effective porosity (empty set), hydraulic conductivity (K), and transmissivity (T) have been estimated for the wells in the northern sector. In addition, an aquifer assessment quality index has been introduced to assess and to rank the studied aquifer. Therefore, it is concluded that the hydraulic and the step-draw down parameters as well as the aquifer and aquitard thicknesses are prospective for further exploration to the north and the east of the northern sector in the study area. The well efficiency is mostly affected by the studied parameters, particularly the well loss coefficient, the hydraulic parameters and the well design as well. GIS approach and ArcGIS software have been applied to delineate the spatial distribution of the well performance characteristics, in order to compare between the studied groundwater wells and to integrate the different-acquired data. A set of isocontour maps have been introduced to match the lateral variation of the studied parameters and the aquifer potential to refer to the best direction for further underground water exploration.
英文关键词	East El-Oweinat Transmissivity Hydraulic conductivity Aquifer losses Well efficiency GIS system
类型	Article
语种	英语
国家	Egypt
收录类别	SCI-E
WOS记录号	WOS:000472911700001
WOS关键词	RESERVOIR ZONATION ; POROSITY EXPONENT ; LITHOLOGY FACTOR ; PETRO-FABRICS ; PORE ; CONDUCTIVITY ; MICROFACIES ; IMPACTS ; DESERT ; BASIN
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215421
作者单位	1.Natl Res Ctr, Dept Geophys Sci, Cairo, Egypt; 2.Cairo Univ, Fac Sci, Dept Geol, Giza, Egypt
推荐引用方式 GB/T 7714	Nabawy, Bassem S.,Abdelhalim, Ahmed,El-Meselhy, Ahmed. Step-drawdown test as a tool for the assessment of the Nubia sandstone aquifer in East El-Oweinat Area, Egypt[J],2019,78(13).
APA	Nabawy, Bassem S.,Abdelhalim, Ahmed,&El-Meselhy, Ahmed.(2019).Step-drawdown test as a tool for the assessment of the Nubia sandstone aquifer in East El-Oweinat Area, Egypt.ENVIRONMENTAL EARTH SCIENCES,78(13).
MLA	Nabawy, Bassem S.,et al."Step-drawdown test as a tool for the assessment of the Nubia sandstone aquifer in East El-Oweinat Area, Egypt".ENVIRONMENTAL EARTH SCIENCES 78.13(2019).