干旱区生态环境知识资源中心(Arid): Influence of depositional and diagenetic processes on the petrophysical and mechanical properties of Lower Miocene sandstones, Qattara Depression, Northwestern Egypt

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DOI	10.1016/j.petrol.2019.02.058
	Influence of depositional and diagenetic processes on the petrophysical and mechanical properties of Lower Miocene sandstones, Qattara Depression, Northwestern Egypt
	Salah, Mohamed K.1; Abd El-Aal, Ahmed K.2,3; Abdel-Hameed, A. T.4
通讯作者	Abd El-Aal, Ahmed K.
来源期刊	JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
ISSN	0920-4105
EISSN	1873-4715
出版年	2019
卷号	177 页码:1114-1133
英文摘要	The main objective of this study is to investigate the impact of the depositional and diagenetic processes on the petrophysical and mechanical properties of the Lower Miocene Moghra Formation sandstones exposed at the Qattara Depression, Northwestern Desert, Egypt. We conducted several petrophysical and mechanical investigations on a large number of core samples collected from the study area to determine their petrophysical and mechanical characteristics. Results of petrographical, scanning electron microscope (SEM), and the X-ray diffraction (XRD) analyses revealed that the studied sandstones are composed essentially of quartzarenites with minor limestone and shale intercalations and can be grouped into three sedimentary lithofacies: fossiliferous dolomitic quartzarenites, ferruginous quartzarenites and calcareous quartz arenite. The main diagenetic processes encountered in the Moghra sandstones are compaction, cementation, and dissolution. These processes significantly affected the porosity and influenced the petrophysical and mechanical parameters of the studied sandstones. The Moghra sandstones have average values of 14.51%, 2.24 g/cm(3), 22.38 mD, 45.77%, and 3377 m/s, for porosity (phi), bulk density (rho(b)), permeability (K), irreducible water saturation (S-wirr), and the P- wave velocity (Vp), respectively. In addition, these rocks have average values of 83.98 MPa, 5.97 MPa, and 34.42, for the unconfined compressive strength (UCSdry), the point load strength index (IS50), and the Schmidt hammer number (SHN), respectively. Significant relationships, with moderate/high correlation coefficients, have been obtained between the investigated parameters of the studied sandstones. The studied sandstones, however, showed no clustering of their petrophysical and mechanical properties based on their facies type. The present results indicate that both porosity and bulk density, which are in turn the products of the depositional and diagenetic history of the investigated rocks, are major parameters controlling the other petrophysical and mechanical properties of the studied rocks.
英文关键词	Moghra formation Petrophysics Mechanical properties Diagenetic impacts Sedimentary environment Qattara depression
类型	Article
语种	英语
国家	Lebanon ; Saudi Arabia ; Egypt
收录类别	SCI-E
WOS记录号	WOS:000462768100089
WOS关键词	UNIAXIAL COMPRESSIVE STRENGTH ; SLAKE DURABILITY INDEX ; POINT LOAD INDEX ; P-WAVE VELOCITY ; ENGINEERING PROPERTIES ; GEOTECHNICAL PROPERTIES ; PHYSICAL-PROPERTIES ; IMPACT STRENGTH ; WESTERN DESERT ; ROCK
WOS类目	Energy & Fuels ; Engineering, Petroleum
WOS研究方向	Energy & Fuels ; Engineering
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217264
作者单位	1.Amer Univ Beirut, Dept Geol, Beirut 11072020, Lebanon; 2.Najran Univ, Fac Engn, Civil Engn Dept, POB 1988, Najran, Saudi Arabia; 3.Al Azhar Univ, Geol Dept, Assiut Branch, Fac Sci, Assiut, Egypt; 4.Tanta Univ, Geol Dept, Fac Sci, Tanta 31527, Egypt
推荐引用方式 GB/T 7714	Salah, Mohamed K.,Abd El-Aal, Ahmed K.,Abdel-Hameed, A. T.. Influence of depositional and diagenetic processes on the petrophysical and mechanical properties of Lower Miocene sandstones, Qattara Depression, Northwestern Egypt[J],2019,177:1114-1133.
APA	Salah, Mohamed K.,Abd El-Aal, Ahmed K.,&Abdel-Hameed, A. T..(2019).Influence of depositional and diagenetic processes on the petrophysical and mechanical properties of Lower Miocene sandstones, Qattara Depression, Northwestern Egypt.JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING,177,1114-1133.
MLA	Salah, Mohamed K.,et al."Influence of depositional and diagenetic processes on the petrophysical and mechanical properties of Lower Miocene sandstones, Qattara Depression, Northwestern Egypt".JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING 177(2019):1114-1133.